git mv Ingress ingress

controllers/nginx-third-party/lua/dynamic-ssl.lua

@@ -0,0 +1,44 @@
+local ssl = require "ngx.ssl"
+local ssl_base_directory = "/etc/nginx/nginx-ssl"
+
+local server_name = ssl.server_name()
+local addr, addrtyp, err = ssl.raw_server_addr()
+local byte = string.byte
+local cert_path = ""
+
+ssl.clear_certs()
+
+-- Check for SNI request.
+if server_name == nil then
+    ngx.log(ngx.INFO, "SNI Not present - performing IP lookup")
+    -- Set server name as IP address.
+    server_name = string.format("%d.%d.%d.%d", byte(addr, 1), byte(addr, 2), byte(addr, 3), byte(addr, 4))
+    ngx.log(ngx.INFO, "IP Address: ", server_name)
+end 
+
+-- Set certifcate paths
+cert_path = ssl_base_directory .. "/" .. server_name .. ".cert"
+key_path = ssl_base_directory .. "/" .. server_name .. ".key"
+
+-- Attempt to retrieve and set certificate for request.
+local f = assert(io.open(cert_path))
+local cert_data = f:read("*a")
+f:close()
+
+local ok, err = ssl.set_der_cert(cert_data)
+if not ok then
+    ngx.log(ngx.ERR, "failed to set DER cert: ", err)
+    return
+end
+
+-- Attempt to retrieve and set key for request.
+local f = assert(io.open(key_path))
+local pkey_data = f:read("*a")
+f:close()
+
+local ok, err = ssl.set_der_priv_key(pkey_data)
+
+if not ok then
+    ngx.log(ngx.ERR, "failed to set DER key: ", err)
+    return
+end

controllers/nginx-third-party/lua/error_page.lua

@@ -0,0 +1,50 @@
+http = require "resty.http"
+
+function openURL(status, page)
+    local httpc = http.new()
+
+    local res, err = httpc:request_uri(page, {
+        path = "/",
+        method = "GET"
+    })
+
+    if not res then
+        ngx.log(ngx.ERR, err)
+        ngx.exit(500)
+    end
+
+    ngx.status = tonumber(status)
+    ngx.header["Content-Type"] = ngx.var.httpReturnType or "text/plain"
+    if ngx.var.http_cookie then
+        ngx.header["Cookie"] = ngx.var.http_cookie
+    end
+    
+    ngx.say(res.body)
+end
+
+
+function openCustomErrorURL(status, page)
+    local httpc = http.new()
+
+    data = {}
+    data["code"] = status
+    data["format"] = ngx.var.httpAccept
+    local params = "/error?"..ngx.encode_args(data)
+    local res, err = httpc:request_uri(page, {
+        path = params,
+        method = "GET"
+    })
+
+    if not res then
+        ngx.log(ngx.ERR, err)
+        ngx.exit(500)
+    end
+
+    ngx.status = tonumber(status)
+    ngx.header["Content-Type"] = ngx.var.httpReturnType or "text/plain"
+    if ngx.var.http_cookie then
+        ngx.header["Cookie"] = ngx.var.http_cookie
+    end
+    
+    ngx.say(res.body)
+end

controllers/nginx-third-party/lua/ingress.lua

@@ -0,0 +1,229 @@
+local _M = {}
+
+local cjson = require "cjson"
+local trie = require "trie"
+local http = require "resty.http"
+local cache = require "resty.dns.cache"
+local os = require "os"
+
+local encode = cjson.encode
+local decode = cjson.decode
+
+local table_concat = table.concat
+
+local trie_get = trie.get
+local match = string.match
+local gsub = string.gsub
+local lower = string.lower
+
+
+-- we "cache" the config local to each worker
+local ingressConfig = nil
+
+local cluster_domain = "cluster.local"
+
+local def_backend = nil
+
+local custom_error = nil
+
+local dns_cache_options = nil
+
+function get_ingressConfig(ngx)
+    local d = ngx.shared["ingress"]
+    local value, flags, stale = d:get_stale("ingressConfig")
+    if not value then
+        -- nothing we can do
+        return nil, "config not set"
+    end
+    ingressConfig = decode(value)
+    return ingressConfig, nil
+end
+
+function worker_cache_config(ngx)
+    local _, err = get_ingressConfig(ngx)
+    if err then
+        ngx.log(ngx.ERR, "unable to get ingressConfig: ", err)
+        return
+    end
+end
+
+function _M.content(ngx)
+    local host = ngx.var.host
+
+    -- strip off any port
+    local h = match(host, "^(.+):?")
+    if h then
+        host = h
+    end
+
+    host = lower(host)
+
+    local config, err = get_ingressConfig(ngx)
+    if err then
+        ngx.log(ngx.ERR, "unable to get config: ", err)
+        return ngx.exit(503)
+    end
+
+    -- this assumes we only allow exact host matches
+    local paths = config[host]
+    if not paths then
+        ngx.log(ngx.ERR, "No server for host "..host.." returning 404")
+        if custom_error then
+            openCustomErrorURL(404, custom_error)
+            return
+        else 
+            openURL(404, def_backend)
+            return
+        end
+    end
+
+    local backend = trie_get(paths, ngx.var.uri)
+
+    if not backend then
+        ngx.log(ngx.ERR, "No server for host "..host.." and path "..ngx.var.uri.." returning 404")
+        if custom_error then
+            openCustomErrorURL(404, custom_error)
+            return
+        else 
+            openURL(404, def_backend)
+            return
+        end
+    end
+
+    local address = backend.host
+    ngx.var.upstream_port = backend.port or 80
+
+    if dns_cache_options then
+        local dns = cache.new(dns_cache_options)
+        local answer, err, stale = dns:query(address, { qtype = 1 })
+        if err or (not answer) then
+            if stale then
+                answer = stale
+            else
+                answer = nil
+            end
+        end
+        if answer and answer[1] then
+            local ans = answer[1]
+            if ans.address then
+                address = ans.address
+            end
+        else
+            ngx.log(ngx.ERR, "dns failed for ", address, " with ", err, " => ", encode(answer or ""))
+        end
+    end
+
+    ngx.var.upstream_host = address
+    return
+end
+
+function _M.init_worker(ngx)
+end
+
+function _M.init(ngx, options)
+    -- ngx.log(ngx.OK, "options: "..encode(options))
+    def_backend = options.def_backend
+    custom_error = options.custom_error
+
+    -- try to create a dns cache
+    local resolvers = options.resolvers
+    if resolvers then
+        cache.init_cache(512)
+        local servers = trie.strsplit(" ", resolvers)
+        dns_cache_options =
+            {
+                dict = "dns_cache",
+                negative_ttl = nil,
+                max_stale = 900,
+                normalise_ttl = false,
+                resolver  = {
+                    nameservers = {servers[1]}
+                }
+            }
+    end
+
+end
+
+-- dump config. This is the raw config (including trie) for now
+function _M.config(ngx)
+    ngx.header.content_type = "application/json"
+    local config = {
+        ingress = ingressConfig
+    }
+    local val = encode(config)
+    ngx.print(val)
+end
+
+function _M.update_ingress(ngx)
+    ngx.header.content_type = "application/json"
+
+    if ngx.req.get_method() ~= "POST" then
+        ngx.print(encode({
+            message = "only POST request"
+        }))
+        ngx.exit(400)
+        return
+    end
+
+    ngx.req.read_body()
+    local data = ngx.req.get_body_data()
+    local val = decode(data)
+
+    if not val then
+        ngx.log(ngx.ERR, "failed to decode body")
+        return
+    end
+
+    config = {}
+
+    for _, ingress in ipairs(val) do
+        local namespace = ingress.metadata.namespace
+
+        local spec = ingress.spec
+        -- we do not allow default ingress backends right now.
+        for _, rule in ipairs(spec.rules) do
+            local host = rule.host
+            local paths = config[host]
+            if not paths then
+                paths = trie.new()
+                config[host] = paths
+            end
+            rule.http = rule.http or { paths = {}}
+            for _, path in ipairs(rule.http.paths) do
+                local hostname = table_concat(
+                    {
+                        path.backend.serviceName,
+                        namespace,
+                        "svc",
+                        cluster_domain
+                    }, ".")
+                local backend = {
+                    host = hostname,
+                    port = path.backend.servicePort
+                }
+
+                paths:add(path.path, backend)
+            end
+        end
+    end
+
+    local d = ngx.shared["ingress"]
+    local ok, err, _ = d:set("ingressConfig", encode(config))
+    if not ok then
+        ngx.log(ngx.ERR, "Error: "..err)
+        local res = encode({
+            message = "Error updating Ingress rules: "..err
+        })
+        ngx.print(res)
+        return ngx.exit(500)
+    end
+
+    ingressConfig = config
+
+    local res = encode({
+        message = "Ingress rules updated"
+    })
+    ngx.print(res)
+end
+
+return _M

controllers/nginx-third-party/lua/trie.lua

@@ -0,0 +1,78 @@
+-- Simple trie for URLs
+
+local _M = {}
+
+local mt = {
+    __index = _M
+}
+
+-- http://lua-users.org/wiki/SplitJoin
+local strfind, tinsert, strsub = string.find, table.insert, string.sub
+function _M.strsplit(delimiter, text)
+    local list = {}
+    local pos = 1
+    while 1 do
+        local first, last = strfind(text, delimiter, pos)
+        if first then -- found?
+            tinsert(list, strsub(text, pos, first-1))
+            pos = last+1
+        else
+            tinsert(list, strsub(text, pos))
+            break
+        end
+    end
+    return list
+end
+
+local strsplit = _M.strsplit
+
+function _M.new()
+    local t = { }
+    return setmetatable(t, mt)
+end
+
+function _M.add(t, key, val)
+    local parts = {}
+    -- hack for just /
+    if key == "/" then
+        parts = { "" }
+    else
+        parts = strsplit("/", key)
+    end
+
+    local l = t
+    for i = 1, #parts do
+        local p = parts[i]
+        if not l[p] then
+            l[p] = {}
+        end
+        l =  l[p]
+    end
+    l.__value = val
+end
+
+function _M.get(t, key)
+    local parts = strsplit("/", key)
+
+    local l = t
+
+    -- this may be nil
+    local val = t.__value
+    for i = 1, #parts do
+        local p = parts[i]
+        if l[p] then
+            l = l[p]
+            local v = l.__value
+            if v then
+                val = v
+            end
+        else
+            break
+        end
+    end
+
+    -- may be nil
+    return val
+end
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/.gitignore

@@ -0,0 +1,2 @@
+t/servroot/
+t/error.log

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/LICENSE.txt

@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Hamish Forbes
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/Makefile

@@ -0,0 +1,23 @@
+OPENRESTY_PREFIX=/usr/local/openresty
+
+PREFIX ?=          /usr/local
+LUA_INCLUDE_DIR ?= $(PREFIX)/include
+LUA_LIB_DIR ?=     $(PREFIX)/lib/lua/$(LUA_VERSION)
+INSTALL ?= install
+TEST_FILE ?= t
+
+.PHONY: all test leak
+
+all: ;
+
+
+install: all
+	$(INSTALL) -d $(DESTDIR)/$(LUA_LIB_DIR)/resty/dns
+
+leak: all
+	TEST_NGINX_CHECK_LEAK=1	TEST_NGINX_NO_SHUFFLE=1 PATH=$(OPENRESTY_PREFIX)/nginx/sbin:$$PATH prove -I../test-nginx/lib -r $(TEST_FILE)
+
+test: all
+	TEST_NGINX_NO_SHUFFLE=1 PATH=$(OPENRESTY_PREFIX)/nginx/sbin:$$PATH prove -I../test-nginx/lib -r $(TEST_FILE)
+	util/lua-releng.pl
+

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/README.md

@@ -0,0 +1,111 @@
+#lua-resty-dns-cache
+
+A wrapper for [lua-resty-dns](https://github.com/openresty/lua-resty-dns) to cache responses based on record TTLs.
+
+Uses [lua-resty-lrucache](https://github.com/openresty/lua-resty-lrucache) and [ngx.shared.DICT](https://github.com/openresty/lua-nginx-module#ngxshareddict) to provide a 2 level cache.
+
+Can repopulate cache in the background while returning stale answers.
+
+#Overview
+
+```lua
+  lua_shared_dict dns_cache 1m;
+
+  init_by_lua '
+      require("resty.dns.cache").init_cache(200)
+  ';
+
+    server {
+
+        listen 80;
+        server_name dns_cache;
+
+        location / {
+            content_by_lua '
+                local DNS_Cache = require("resty.dns.cache")
+                local dns = DNS_Cache.new({
+                        dict = "dns_cache",
+                        negative_ttl = 30,
+                        max_stale = 300,
+                        resolver  = {
+                            nameservers = {"123.123.123.123"}
+                        }
+                    })
+
+                local host = ngx.req.get_uri_args()["host"] or "www.google.com"
+
+                local answer, err, stale = dns:query(host)
+                if err then
+                    if stale then
+                        ngx.header["Warning"] = "110: Response is stale"
+                        answer = stale
+                        ngx.log(ngx.ERR, err)
+                    else
+                        ngx.status = 500
+                        ngx.say(err)
+                        return ngx.exit(ngx.status)
+                    end
+                end
+
+                local cjson = require "cjson"
+                ngx.say(cjson.encode(answer))
+            ';
+        }
+    }
+```
+
+#Methods
+### init_cache
+`syntax: ok, err = dns_cache.init_cache(max_items?)`
+
+Creates a global lrucache object for caching responses.
+
+Accepts an optional `max_items` argument, defaults to 200 entries.
+
+Calling this repeatedly will reset the LRU cache
+
+### initted
+`syntax: ok = dns_cache.initted()`
+
+Returns `true` if LRU Cache has been initialised
+
+### new
+`syntax: ok, err = dns_cache.new(opts)`
+
+Returns a new DNS cache instance. Returns `nil` and a string on error
+
+Accepts a table of options, if no shared dictionary is provided only lrucache is used.
+
+* `dict` - Name of the [ngx.shared.DICT](https://github.com/openresty/lua-nginx-module#ngxshareddict) to use for cache.
+* `resolver` - Table of options passed to [lua-resty-dns](https://github.com/openresty/lua-resty-dns#new). Defaults to using Google DNS.
+* `normalise_ttl` - Boolean. Reduces TTL in cached answers to account for cached time. Defaults to `true`.
+* `negative_ttl` - Time in seconds to cache negative / error responses. `nil` or `false` disables caching negative responses. Defaults to `false`
+* `minimise_ttl` - Boolean. Set cache TTL based on the shortest DNS TTL in all responses rather than the first response. Defaults to `false`
+* `max_stale` - Number of seconds past expiry to return stale content rather than querying. Stale hits will trigger a non-blocking background query to repopulate cache.
+
+
+### query
+`syntax: answers, err, stale = c:query(name, opts?)`
+
+Passes through to lua-resty-dns' [query](https://github.com/openresty/lua-resty-dns#query) method.
+
+Returns an extra `stale` variable containing stale data if a resolver cannot be contacted.
+
+### tcp_query
+`syntax: answers, err, stale = c:tcp_query(name, opts?)`
+
+Passes through to lua-resty-dns' [tcp_query](https://github.com/openresty/lua-resty-dns#tcp_query) method.
+
+Returns an extra `stale` variable containing stale data if a resolver cannot be contacted.
+
+### set_timeout
+`syntax: c:set_timeout(time)`
+
+Passes through to lua-resty-dns' [set_timeout](https://github.com/openresty/lua-resty-dns#set_timeout) method.
+
+## Constants
+lua-resty-dns' [constants](https://github.com/openresty/lua-resty-dns#constants) are accessible on the `resty.dns.cache` object too.
+
+## TODO
+ * Cap'n'proto serialisation
+

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/lib/resty/dns/cache.lua

@@ -0,0 +1,449 @@
+local ngx_log = ngx.log
+local ngx_DEBUG = ngx.DEBUG
+local ngx_ERR = ngx.ERR
+local ngx_shared = ngx.shared
+local ngx_time = ngx.time
+local resty_resolver = require "resty.dns.resolver"
+local resty_lrucache = require "resty.lrucache"
+local cjson = require "cjson"
+local json_encode = cjson.encode
+local json_decode = cjson.decode
+local tbl_concat = table.concat
+local tonumber = tonumber
+local _ngx_timer_at = ngx.timer.at
+local ngx_worker_pid = ngx.worker.pid
+
+local function ngx_timer_at(delay, func, ...)
+    local ok, err = _ngx_timer_at(delay, func, ...)
+    if not ok then
+        ngx_log(ngx_ERR, "Timer Error: ", err)
+    end
+    return ok, err
+end
+
+
+local debug_log = function(msg, ...)
+    if type(msg) == 'table' then
+        local ok, json = pcall(json_encode, msg)
+        if ok then
+            msg = json
+        else
+            ngx_log(ngx_ERR, json)
+        end
+    end
+    ngx_log(ngx_DEBUG, msg, ...)
+end
+
+local _M = {
+    _VERSION = '0.01',
+    TYPE_A      = resty_resolver.TYPE_A,
+    TYPE_NS     = resty_resolver.TYPE_NS,
+    TYPE_CNAME  = resty_resolver.TYPE_CNAME,
+    TYPE_PTR    = resty_resolver.TYPE_PTR,
+    TYPE_MX     = resty_resolver.TYPE_MX,
+    TYPE_TXT    = resty_resolver.TYPE_TXT,
+    TYPE_AAAA   = resty_resolver.TYPE_AAAA,
+    TYPE_SRV    = resty_resolver.TYPE_SRV,
+    TYPE_SPF    = resty_resolver.TYPE_SPF,
+    CLASS_IN    = resty_resolver.CLASS_IN
+}
+
+local DEBUG = false
+
+local mt = { __index = _M }
+
+local lru_cache_defaults = {200}
+local resolver_defaults = {
+    nameservers = {"8.8.8.8", "8.8.4.4"}
+}
+
+-- Global lrucache instance
+local lru_cache
+local max_items = 200
+
+function _M.init_cache(size)
+    if size then max_items = size end
+    local err
+    if DEBUG then debug_log("Initialising lru cache with ", max_items, " max items") end
+    lru_cache, err = resty_lrucache.new(max_items)
+    if not lru_cache then
+        return nil, err
+    end
+    return true
+end
+
+
+function _M.initted()
+    if lru_cache then return true end
+    return false
+end
+
+
+function _M.new(opts)
+    local self, err = { opts = opts}, nil
+    opts = opts or {}
+
+    -- Set defaults
+    if opts.normalise_ttl ~= nil then self.normalise_ttl = opts.normalise_ttl else self.normalise_ttl = true  end
+    if opts.minimise_ttl  ~= nil then self.minimise_ttl  = opts.minimise_ttl  else self.minimise_ttl  = false end
+    if opts.negative_ttl  ~= nil then
+        self.negative_ttl = tonumber(opts.negative_ttl)
+    else
+        self.negative_ttl = false
+    end
+    if opts.max_stale ~= nil then
+        self.max_stale = tonumber(opts.max_stale)
+    else
+        self.max_stale = 0
+    end
+
+    opts.resolver = opts.resolver or resolver_defaults
+    self.resolver, err = resty_resolver:new(opts.resolver)
+    if not self.resolver then
+        return nil, err
+    end
+
+    if opts.dict then
+        self.dict = ngx_shared[opts.dict]
+    end
+    return setmetatable(self, mt)
+end
+
+
+function _M.flush(self, hard)
+    local ok, err = self.init_cache()
+    if not ok then
+        ngx_log(ngx_ERR, err)
+    end
+    if self.dict then
+        if DEBUG then debug_log("Flushing dictionary") end
+        self.dict:flush_all()
+        if hard then
+            local flushed = self.dict:flush_expired()
+            if DEBUG then debug_log("Flushed ", flushed, " keys from memory") end
+        end
+    end
+end
+
+
+function _M._debug(flag)
+    DEBUG = flag
+end
+
+
+function _M.set_timeout(self, ...)
+    return self.resolver:set_timeout(...)
+end
+
+
+local function minimise_ttl(answer)
+    if DEBUG then debug_log('Minimising TTL') end
+    local ttl
+    for _, ans in ipairs(answer) do
+        if DEBUG then debug_log('TTL ', ans.name, ': ', ans.ttl) end
+        if ttl == nil or ans.ttl < ttl then
+            ttl = ans.ttl
+        end
+    end
+    return ttl
+end
+
+
+local function normalise_ttl(self, data)
+    -- Calculate time since query and subtract from answer's TTL
+    if self.normalise_ttl then
+        local now = ngx_time()
+        local diff = now - data.now
+        if DEBUG then debug_log("Normalising TTL, diff: ", diff) end
+        for _, answer in ipairs(data.answer) do
+            if DEBUG then debug_log("Old: ", answer.ttl, ", new: ", answer.ttl - diff) end
+            answer.ttl = answer.ttl - diff
+        end
+        data.now = now
+    end
+    return data
+end
+
+
+local function cache_get(self, key)
+    -- Try local LRU cache first
+    local data, lru_stale
+    if lru_cache then
+        data, lru_stale = lru_cache:get(key)
+        -- Set stale if should have expired
+        if data and data.expires <= ngx_time() then
+            lru_stale = data
+            data = nil
+        end
+        if data then
+            if DEBUG then
+                debug_log('lru_cache HIT: ', key)
+                debug_log(data)
+            end
+            return normalise_ttl(self, data)
+        elseif DEBUG then
+            debug_log('lru_cache MISS: ', key)
+        end
+    end
+
+    -- lru_cache miss, try shared dict
+    local dict = self.dict
+    if dict then
+        local data, flags, stale = dict:get_stale(key)
+        -- Set stale if should have expired
+        if data then
+            data = json_decode(data)
+            if data.expires <= ngx_time() then
+                stale = true
+            end
+        end
+
+        -- Dict data is stale, prefer stale LRU data
+        if stale and lru_stale then
+            if DEBUG then
+                debug_log('lru_cache STALE: ', key)
+                debug_log(lru_stale)
+            end
+            return nil, normalise_ttl(self, lru_stale)
+        end
+
+        -- Definitely no lru data, going to have to try shared dict
+        if not data then
+            -- Full MISS on dict, return nil
+            if DEBUG then debug_log('shared_dict MISS: ', key) end
+            return nil
+        end
+
+        -- Return nil and dict cache if its stale
+        if stale then
+            if DEBUG then debug_log('shared_dict STALE: ', key) end
+            return nil, normalise_ttl(self, data)
+        end
+
+        -- Fresh HIT from dict, repopulate the lru_cache
+        if DEBUG then debug_log('shared_dict HIT: ', key) end
+        if lru_cache then
+            local ttl = data.expires - ngx_time()
+            if DEBUG then debug_log('lru_cache SET: ', key, ' ', ttl) end
+            lru_cache:set(key, data, ttl)
+        end
+        return normalise_ttl(self, data)
+    elseif lru_stale then
+        -- Return lru stale if no dict configured
+        if DEBUG then
+            debug_log('lru_cache STALE: ', key)
+            debug_log(lru_stale)
+        end
+        return nil, normalise_ttl(self, lru_stale)
+    end
+
+    if not lru_cache or dict then
+        ngx_log(ngx_ERR, "No cache defined")
+    end
+end
+
+
+local function cache_set(self, key, answer, ttl)
+    -- Don't cache records with 0 TTL
+    if ttl == 0 or ttl == nil then
+        return
+    end
+
+    -- Calculate absolute expiry - used to populate lru_cache from shared_dict
+    local now = ngx_time()
+    local data = {
+        answer = answer,
+        now = now,
+        queried = now,
+        expires = now + ttl
+    }
+
+    -- Extend cache expiry if using stale
+    local real_ttl = ttl
+    if self.max_stale then
+        real_ttl = real_ttl + self.max_stale
+    end
+
+    -- Set lru cache
+    if lru_cache then
+        if DEBUG then debug_log('lru_cache SET: ', key, ' ', real_ttl) end
+        lru_cache:set(key, data, real_ttl)
+    end
+
+    -- Set dict cache
+    local dict = self.dict
+    if dict then
+        if DEBUG then debug_log('shared_dict SET: ', key, ' ', real_ttl) end
+        local ok, err, forcible = dict:set(key, json_encode(data), real_ttl)
+        if not ok then
+            ngx_log(ngx_ERR, 'shared_dict ERR: ', err)
+        end
+        if forcible then
+            ngx_log(ngx_DEBUG, 'shared_dict full')
+        end
+    end
+end
+
+
+local function _resolve(resolver, query_func, host, opts)
+    if DEBUG then debug_log('Querying: ', host) end
+    local answers, err = query_func(resolver, host, opts)
+    if not answers then
+        return answers, err
+    end
+    if DEBUG then debug_log(answers) end
+
+    return answers
+end
+
+
+local function cache_key(host, qtype)
+    return tbl_concat({host,'|',qtype})
+end
+
+
+local function get_repopulate_lock(dict, host, qtype)
+    local key = cache_key(host, qtype or 1) .. '|lock'
+    if DEBUG then debug_log("Locking '", key, "' for ", 30, "s: ", ngx_worker_pid()) end
+    return dict:add(key, ngx_worker_pid(), 30)
+end
+
+
+local function release_repopulate_lock(dict, host, qtype)
+    local key = cache_key(host, qtype or 1) .. '|lock'
+    local pid, err = dict:get(key)
+    if DEBUG then debug_log("Releasing '", key, "' for ", ngx_worker_pid(), " from ", pid) end
+    if pid == ngx_worker_pid() then
+        dict:delete(key)
+    else
+        ngx_log(ngx_DEBUG, "couldnt release lock")
+    end
+end
+
+
+local _query
+
+local function _repopulate(premature, self, host, opts, tcp)
+    if premature then return end
+
+    if DEBUG then debug_log("Repopulating '", host, "'") end
+    -- Create a new resolver instance, cannot share sockets
+    local err
+    self.resolver, err = resty_resolver:new(self.opts.resolver)
+    if err then
+        ngx_log(ngx_ERR, err)
+        return nil
+    end
+    -- Do not use stale when repopulating
+    _query(self, host, opts, tcp, true)
+end
+
+
+local function repopulate(self, host, opts, tcp)
+    -- Lock, there's a window between the key expiring and the background query completing
+    -- during which another query could trigger duplicate repopulate jobs
+    local ok, err = get_repopulate_lock(self.dict, host, opts.qtype)
+    if ok then
+        if DEBUG then debug_log("Attempting to repopulate '", host, "'") end
+        local ok, err = ngx_timer_at(0, _repopulate, self, host, opts, tcp)
+        if not ok then
+            -- Release lock if we couldn't start the timer
+            release_repopulate_lock(self.dict, host, opts.qtype)
+        end
+    else
+        if err == "exists" then
+            if DEBUG then debug_log("Lock not acquired") end
+            return
+        else
+            ngx.log(ngx.ERR, err)
+        end
+    end
+end
+
+
+_query = function(self, host, opts, tcp, repopulating)
+    -- Build cache key
+    opts = opts or {}
+    local key = cache_key(host, opts.qtype or 1)
+
+    -- Check caches
+    local answer
+    local data, stale = cache_get(self, key)
+    if data then
+        -- Shouldn't get a cache hit when repopulating but better safe than sorry
+        if repopulating then release_repopulate_lock(self.dict, host, opts.qtype) end
+        answer = data.answer
+        -- Don't return negative cache hits if negative_ttl is off in this instance
+        if not answer.errcode or self.negative_ttl then
+            return answer
+        end
+    end
+
+    -- No fresh cache entry, return stale if within max_stale and trigger background repopulate
+    if stale and not repopulating and self.max_stale > 0
+        and (ngx_time() - stale.expires) < self.max_stale then
+            if DEBUG then debug_log('max_stale ', self.max_stale) end
+            repopulate(self, host, opts, tcp)
+            if DEBUG then debug_log('Returning STALE: ', key) end
+            return nil, nil, stale.answer
+    end
+
+    -- Try to resolve
+    local resolver = self.resolver
+    local query_func = resolver.query
+    if tcp then
+        query_func = resolver.tcp_query
+    end
+
+    local answer, err = _resolve(resolver, query_func, host, opts)
+    if not answer then
+        -- Couldn't resolve, return potential stale response with error msg
+        if DEBUG then
+            debug_log('Resolver error ', key, ': ', err)
+            if stale then debug_log('Returning STALE: ', key) end
+        end
+        if repopulating then release_repopulate_lock(self.dict, host, opts.qtype) end
+        if stale then stale = stale.answer end
+        return nil, err, stale
+    end
+
+    local ttl
+
+    -- Cache server errors for negative_cache seconds
+    if answer.errcode then
+        if self.negative_ttl then
+            ttl = self.negative_ttl
+        else
+            if repopulating then release_repopulate_lock(self.dict, host, opts.qtype) end
+            return answer
+        end
+    else
+        -- Cache for the lowest TTL in the chain of responses...
+        if self.minimise_ttl then
+            ttl = minimise_ttl(answer)
+        elseif answer[1] then
+            -- ... or just the first one
+            ttl = answer[1].ttl or nil
+        end
+    end
+
+    -- Set cache
+    cache_set(self, key, answer, ttl)
+
+    if repopulating then release_repopulate_lock(self.dict, host, opts.qtype) end
+
+    return answer
+end
+
+
+function _M.query(self, host, opts)
+    return _query(self, host, opts, false)
+end
+
+
+function _M.tcp_query(self, host, opts)
+    return _query(self, host, opts, true)
+end
+
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/t/01-sanity.t

@@ -0,0 +1,233 @@
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * 24;
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+};
+
+no_long_string();
+run_tests();
+
+__DATA__
+=== TEST 1: Load module without errors.
+--- http_config eval
+"$::HttpConfig"
+. q{
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+    ';
+}
+--- config
+    location /sanity {
+        echo "OK";
+    }
+--- request
+GET /sanity
+--- no_error_log
+[error]
+--- response_body
+OK
+
+
+=== TEST 2: Can init cache - defaults
+--- http_config eval
+"$::HttpConfig"
+. q{
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /sanity {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            ngx.say(DNS_Cache.initted())
+        ';
+    }
+--- request
+GET /sanity
+--- no_error_log
+[error]
+--- response_body
+true
+
+=== TEST 3: Can init cache - user config
+--- http_config eval
+"$::HttpConfig"
+. q{
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache(300)
+    ';
+}
+--- config
+    location /sanity {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            ngx.say(DNS_Cache.initted())
+        ';
+    }
+--- request
+GET /sanity
+--- no_error_log
+[error]
+--- response_body
+true
+
+=== TEST 4: Can init new instance - defaults
+--- http_config eval
+"$::HttpConfig"
+. q{
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache(300)
+    ';
+}
+--- config
+    location /sanity {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new()
+            if dns then
+                ngx.say("OK")
+            else
+                ngx.say(err)
+            end
+        ';
+    }
+--- request
+GET /sanity
+--- no_error_log
+[error]
+--- response_body
+OK
+
+=== TEST 5: Can init new instance - user config
+--- http_config eval
+"$::HttpConfig"
+. q{
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache(300)
+    ';
+}
+--- config
+    location /sanity {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                negative_ttl = 10,
+                resolver = { nameservers = {"10.10.10.10"} }
+            })
+            if dns then
+                ngx.say("OK")
+            else
+                ngx.say(err)
+            end
+        ';
+    }
+--- request
+GET /sanity
+--- no_error_log
+[error]
+--- response_body
+OK
+
+=== TEST 6: Resty DNS errors are passed through
+--- http_config eval
+"$::HttpConfig"
+. q{
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache(300)
+    ';
+}
+--- config
+    location /sanity {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                resolver = {  }
+            })
+            if dns then
+                ngx.say("OK")
+            else
+                ngx.say(err)
+            end
+        ';
+    }
+--- request
+GET /sanity
+--- no_error_log
+[error]
+--- response_body
+no nameservers specified
+
+=== TEST 7: Can create instance with shared dict
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /sanity {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            ngx.say(DNS_Cache.initted())
+
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache"
+            })
+            if dns then
+                ngx.say("OK")
+            else
+                ngx.say(err)
+            end
+        ';
+    }
+--- request
+GET /sanity
+--- no_error_log
+[error]
+--- response_body
+true
+OK
+
+=== TEST 8: Can create instance with shared dict and no lru_cache
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+}
+--- config
+    location /sanity {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            ngx.say(DNS_Cache.initted())
+
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache"
+            })
+            if dns then
+                ngx.say("OK")
+            else
+                ngx.say(err)
+            end
+        ';
+    }
+--- request
+GET /sanity
+--- no_error_log
+[error]
+--- response_body
+false
+OK

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/t/02-resolve.t

@@ -0,0 +1,195 @@
+
+use lib 't';
+use TestDNS;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * 12;
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+};
+
+no_long_string();
+run_tests();
+
+__DATA__
+=== TEST 1: Can resolve with lru + dict
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {
+                    nameservers = { {"127.0.0.1", "1953"} }
+                }
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 123456 }],
+}
+--- request
+GET /t
+--- no_error_log
+[error]
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":123456}]
+
+=== TEST 2: Can resolve with lru only
+--- http_config eval
+"$::HttpConfig"
+. q{
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                resolver = {
+                    nameservers = { {"127.0.0.1", "1953"} }
+                }
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 123456 }],
+}
+--- request
+GET /t
+--- no_error_log
+[error]
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":123456}]
+
+=== TEST 3: Can resolve with dict only
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {
+                    nameservers = { {"127.0.0.1", "1953"} }
+                }
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 123456 }],
+}
+--- request
+GET /t
+--- no_error_log
+[error]
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":123456}]
+
+=== TEST 4: Can resolve with no cache, error thrown
+--- http_config eval
+"$::HttpConfig"
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                resolver = {
+                    nameservers = { {"127.0.0.1", "1953"} }
+                }
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 123456 }],
+}
+--- request
+GET /t
+--- error_log
+No cache defined
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":123456}]
+

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/t/03-cache.t

@@ -0,0 +1,873 @@
+use lib 't';
+use TestDNS;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * 47;
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    lua_socket_log_errors off;
+};
+
+no_long_string();
+run_tests();
+
+__DATA__
+=== TEST 1: Response comes from cache on second hit
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 123456 }],
+}
+--- request
+GET /t
+--- error_log
+lru_cache HIT
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":123456}]
+
+=== TEST 2: Response comes from dict on miss
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            DNS_Cache.init_cache() -- reset cache
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 123456 }],
+}
+--- request
+GET /t
+--- error_log
+lru_cache MISS
+shared_dict HIT
+lru_cache SET
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":123456}]
+
+
+=== TEST 3: Stale response from lru served if resolver down
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_sleep 2;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1954"}}, retrans = 1, timeout = 100}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if stale then
+                answer = stale
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 1 }],
+}
+--- request
+GET /t
+--- error_log
+lru_cache MISS
+lru_cache STALE
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":-1}]
+
+
+=== TEST 4: Stale response from dict served if resolver down
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_sleep 2;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1954"}}, retrans = 1, timeout = 100}
+            })
+            DNS_Cache.init_cache() -- reset cache
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if stale then
+                answer = stale
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 1 }],
+}
+--- request
+GET /t
+--- error_log
+lru_cache MISS
+shared_dict STALE
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":-1}]
+
+=== TEST 5: Stale response from lru served if resolver down, no dict
+--- http_config eval
+"$::HttpConfig"
+. q{
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_sleep 2;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1954"}}, retrans = 1, timeout = 100}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if stale then
+                answer = stale
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 1 }],
+}
+--- request
+GET /t
+--- error_log
+lru_cache MISS
+lru_cache STALE
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":-1}]
+
+=== TEST 6: Stale response from dict served if resolver down, no lru
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_sleep 2;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1954"}}, retrans = 1, timeout = 100}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if stale then
+                answer = stale
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 1 }],
+}
+--- request
+GET /t
+--- error_log
+shared_dict STALE
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":-1}]
+
+=== TEST 7: TTLs are reduced
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_sleep 2;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}, retrans = 1, timeout = 100}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(answer)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 10 }],
+}
+--- request
+GET /t
+--- no_error_log
+[error]
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":8}]
+
+=== TEST 8: TTL reduction can be disabled
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_sleep 2;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                normalise_ttl = false,
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}, retrans = 1, timeout = 100}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(answer)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 10 }],
+}
+--- request
+GET /t
+--- no_error_log
+[error]
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":10}]
+
+=== TEST 9: Negative responses are not cached by default
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns._debug(true)
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    rcode => 3,
+    opcode => 0,
+    qname => 'www.google.com',
+}
+--- request
+GET /t
+--- no_error_log
+SET
+--- response_body
+{"errcode":3,"errstr":"name error"}
+
+
+=== TEST 10: Negative responses can be cached
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                negative_ttl = 10,
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                negative_ttl = 10,
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    rcode => 3,
+    opcode => 0,
+    qname => 'www.google.com',
+}
+--- request
+GET /t
+--- error_log
+lru_cache HIT
+--- response_body
+{"errcode":3,"errstr":"name error"}
+
+=== TEST 11: Cached negative responses are not returned by default
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        echo_location /_t;
+        echo_location /_t2;
+    }
+    location /_t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                negative_ttl = 10,
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns._debug(true)
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+        ';
+    }
+    location /_t2 {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1954"}, retrans = 1, timeout = 100}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    rcode => 3,
+    opcode => 0,
+    qname => 'www.google.com',
+}
+--- request
+GET /t
+--- error_log
+lru_cache SET
+lru_cache HIT
+--- response_body
+null
+
+=== TEST 12: Cache TTL can be minimised
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                minimise_ttl = true,
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [
+        { name => "www.google.com", ipv4 => "127.0.0.1", ttl => 123456 },
+        { name => "l.www.google.com", ipv6 => "::1", ttl => 10 },
+    ],
+}
+--- request
+GET /t
+--- error_log
+lru_cache SET: www.google.com|1 10
+shared_dict SET: www.google.com|1 10
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":123456},{"address":"0:0:0:0:0:0:0:1","type":28,"class":1,"name":"l.www.google.com","ttl":10}]
+
+=== TEST 13: Cache TTLs not minimised by default
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}}
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [
+        { name => "www.google.com", ipv4 => "127.0.0.1", ttl => 123456 },
+        { name => "l.www.google.com", ipv6 => "::1", ttl => 10 },
+    ],
+}
+--- request
+GET /t
+--- error_log
+lru_cache SET: www.google.com|1 123456
+shared_dict SET: www.google.com|1 123456
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":123456},{"address":"0:0:0:0:0:0:0:1","type":28,"class":1,"name":"l.www.google.com","ttl":10}]

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/t/04-repopulate.t

@@ -0,0 +1,275 @@
+use lib 't';
+use TestDNS;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * 17;
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    lua_socket_log_errors off;
+};
+
+no_long_string();
+run_tests();
+
+__DATA__
+=== TEST 1: Query is triggered when cache is expired
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}},
+                max_stale = 10
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+            dns._debug(true)
+
+            -- Sleep beyond response TTL
+            ngx.sleep(1.1)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                if stale then
+                    answer = stale
+                else
+                    ngx.say(err)
+                end
+            end
+
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+            ngx.sleep(0.1)
+
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 1 }],
+}
+--- request
+GET /t
+--- error_log
+Returning STALE
+Attempting to repopulate 'www.google.com'
+Repopulating 'www.google.com'
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":1}]
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":0}]
+
+=== TEST 2: Query is not triggered when cache expires and max_stale is disabled
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}, retrans = 1, timeout = 50 },
+                max_stale = 0
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+
+            dns._debug(true)
+
+            -- Sleep beyond response TTL
+            ngx.sleep(1.1)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                if stale then
+                    answer = stale
+                else
+                    ngx.say(err)
+                end
+            end
+
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+            ngx.sleep(0.1)
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 1 }],
+}
+--- request
+GET /t
+--- no_error_log
+Attempting to repopulate 'www.google.com'
+Repopulating 'www.google.com'
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":0}]
+
+
+=== TEST 3: Repopulate ignores max_stale
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}, retrans = 1, timeout = 50 },
+                max_stale = 10,
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+            dns._debug(true)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+
+            -- Sleep beyond response TTL
+            ngx.sleep(1.1)
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                if stale then
+                    answer = stale
+                else
+                    ngx.say(err)
+                end
+            end
+
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+
+            ngx.sleep(0.1)
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 1 }],
+}
+--- request
+GET /t
+--- error_log
+Repopulating 'www.google.com'
+Querying: www.google.com
+Resolver error
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":0}]
+
+=== TEST 4: Multiple queries only trigger 1 repopulate timer
+--- http_config eval
+"$::HttpConfig"
+. q{
+    lua_shared_dict dns_cache 1m;
+    init_by_lua '
+        local DNS_Cache = require("resty.dns.cache")
+        DNS_Cache.init_cache()
+    ';
+}
+--- config
+    location /t {
+        content_by_lua '
+            local DNS_Cache = require("resty.dns.cache")
+            local dns, err = DNS_Cache.new({
+                dict = "dns_cache",
+                resolver = {nameservers = {{"127.0.0.1", "1953"}}, retrans = 1, timeout = 50 },
+                repopulate = true,
+            })
+            if not dns then
+                ngx.say(err)
+            end
+            dns.resolver._id = 125
+
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            dns._debug(true)
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+            local answer, err, stale = dns:query("www.google.com", { qtype = dns.TYPE_A })
+            if not answer then
+                ngx.say(err)
+            end
+
+            local cjson = require"cjson"
+            ngx.say(cjson.encode(answer))
+        ';
+    }
+--- udp_listen: 1953
+--- udp_reply dns
+{
+    id => 125,
+    opcode => 0,
+    qname => 'www.google.com',
+    answer => [{ name => "www.google.com", ipv4 => "127.0.0.1", ttl => 1 }],
+}
+--- request
+GET /t
+--- no_error_log
+Attempting to repopulate www.google.com
+--- response_body
+[{"address":"127.0.0.1","type":1,"class":1,"name":"www.google.com","ttl":1}]

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/t/TestDNS.pm

@@ -0,0 +1,271 @@
+package TestDNS;
+
+use strict;
+use warnings;
+
+use 5.010001;
+use Test::Nginx::Socket::Lua -Base;
+#use JSON::XS;
+
+use constant {
+    TYPE_A => 1,
+    TYPE_TXT => 16,
+    TYPE_CNAME => 5,
+    TYPE_AAAA => 28,
+    CLASS_INTERNET => 1,
+};
+
+sub encode_name ($);
+sub encode_ipv4 ($);
+sub encode_ipv6 ($);
+sub gen_dns_reply ($$);
+
+sub Test::Base::Filter::dns {
+    my ($self, $code) = @_;
+
+    my $args = $self->current_arguments;
+    #warn "args: $args";
+    if (defined $args && $args ne 'tcp' && $args ne 'udp') {
+        die "Invalid argument to the \"dns\" filter: $args\n";
+    }
+
+    my $mode = $args // 'udp';
+
+    my $block = $self->current_block;
+
+    my $pointer_spec = $block->dns_pointers;
+    my @pointers;
+    if (defined $pointer_spec) {
+        my @loops = split /\s*,\s*/, $pointer_spec;
+        for my $loop (@loops) {
+            my @nodes = split /\s*=>\s*/, $loop;
+            my $prev;
+            for my $n (@nodes) {
+                if ($n !~ /^\d+$/ || $n == 0) {
+                    die "bad name ID in the --- dns_pointers: $n\n";
+                }
+
+                if (!defined $prev) {
+                    $prev = $n;
+                    next;
+                }
+
+                $pointers[$prev] = $n;
+            }
+        }
+    }
+
+    my $input = eval $code;
+    if ($@) {
+        die "failed to evaluate code $code: $@\n";
+    }
+
+    if (!ref $input) {
+        return $input;
+    }
+
+    if (ref $input eq 'ARRAY') {
+        my @replies;
+        for my $t (@$input) {
+            push @replies, gen_dns_reply($t, $mode);
+        }
+
+        return \@replies;
+    }
+
+    if (ref $input eq 'HASH') {
+        return gen_dns_reply($input, $mode);
+    }
+
+    return $input;
+}
+
+sub gen_dns_reply ($$) {
+    my ($t, $mode) = @_;
+
+    my @raw_names;
+    push @raw_names, \($t->{qname});
+
+    my $answers = $t->{answer} // [];
+    if (!ref $answers) {
+        $answers = [$answers];
+    }
+
+    for my $ans (@$answers) {
+        push @raw_names, \($ans->{name});
+        if (defined $ans->{cname}) {
+            push @raw_names, \($ans->{cname});
+        }
+    }
+
+    for my $rname (@raw_names) {
+        $$rname = encode_name($$rname // "");
+    }
+
+    my $qname = $t->{qname};
+
+    my $s = '';
+
+    my $id = $t->{id} // 0;
+
+    $s .= pack("n", $id);
+    #warn "id: ", length($s), " ", encode_json([$s]);
+
+    my $qr = $t->{qr} // 1;
+
+    my $opcode = $t->{opcode} // 0;
+
+    my $aa = $t->{aa} // 0;
+
+    my $tc = $t->{tc} // 0;
+    my $rd = $t->{rd} // 1;
+    my $ra = $t->{ra} // 1;
+    my $rcode = $t->{rcode} // 0;
+
+    my $flags = ($qr << 15) + ($opcode << 11) + ($aa << 10) + ($tc << 9) + ($rd << 8) + ($ra << 7) + $rcode;
+    #warn sprintf("flags: %b", $flags);
+
+    $flags = pack("n", $flags);
+    $s .= $flags;
+
+    #warn "flags: ", length($flags), " ", encode_json([$flags]);
+
+    my $qdcount = $t->{qdcount} // 1;
+    my $ancount = $t->{ancount} // scalar @$answers;
+    my $nscount = 0;
+    my $arcount = 0;
+
+    $s .= pack("nnnn", $qdcount, $ancount, $nscount, $arcount);
+
+    #warn "qname: ", length($qname), " ", encode_json([$qname]);
+
+    $s .= $qname;
+
+    my $qs_type = $t->{qtype} // TYPE_A;
+    my $qs_class = $t->{qclass} // CLASS_INTERNET;
+
+    $s .= pack("nn", $qs_type, $qs_class);
+
+    for my $ans (@$answers) {
+        my $name = $ans->{name};
+        my $type = $ans->{type};
+        my $class = $ans->{class};
+        my $ttl = $ans->{ttl};
+        my $rdlength = $ans->{rdlength};
+        my $rddata = $ans->{rddata};
+
+        my $ipv4 = $ans->{ipv4};
+        if (defined $ipv4) {
+            my ($data, $len) = encode_ipv4($ipv4);
+            $rddata //= $data;
+            $rdlength //= $len;
+            $type //= TYPE_A;
+            $class //= CLASS_INTERNET;
+        }
+
+        my $ipv6 = $ans->{ipv6};
+        if (defined $ipv6) {
+            my ($data, $len) = encode_ipv6($ipv6);
+            $rddata //= $data;
+            $rdlength //= $len;
+            $type //= TYPE_AAAA;
+            $class //= CLASS_INTERNET;
+        }
+
+        my $cname = $ans->{cname};
+        if (defined $cname) {
+            $rddata //= $cname;
+            $rdlength //= length $rddata;
+            $type //= TYPE_CNAME;
+            $class //= CLASS_INTERNET;
+        }
+
+        my $txt = $ans->{txt};
+        if (defined $txt) {
+            $rddata //= $txt;
+            $rdlength //= length $rddata;
+            $type //= TYPE_TXT;
+            $class //= CLASS_INTERNET;
+        }
+
+        $type //= 0;
+        $class //= 0;
+        $ttl //= 0;
+
+        #warn "rdlength: $rdlength, rddata: ", encode_json([$rddata]), "\n";
+
+        $s .= $name . pack("nnNn", $type, $class, $ttl, $rdlength) . $rddata;
+    }
+
+    if ($mode eq 'tcp') {
+        return pack("n", length($s)) . $s;
+    }
+
+    return $s;
+}
+
+sub encode_ipv4 ($) {
+    my $txt = shift;
+    my @bytes = split /\./, $txt;
+    return pack("CCCC", @bytes), 4;
+}
+
+sub encode_ipv6 ($) {
+    my $txt = shift;
+    my @groups = split /:/, $txt;
+    my $nils = 0;
+    my $nonnils = 0;
+    for my $g (@groups) {
+        if ($g eq '') {
+            $nils++;
+        } else {
+            $nonnils++;
+            $g = hex($g);
+        }
+    }
+
+    my $total = $nils + $nonnils;
+    if ($total > 8 ) {
+        die "Invalid IPv6 address: too many groups: $total: $txt";
+    }
+
+    if ($nils) {
+        my $found = 0;
+        my @new_groups;
+        for my $g (@groups) {
+            if ($g eq '') {
+                if ($found) {
+                    next;
+                }
+
+                for (1 .. 8 - $nonnils) {
+                    push @new_groups, 0;
+                }
+
+                $found = 1;
+
+            } else {
+                push @new_groups, $g;
+            }
+        }
+
+        @groups = @new_groups;
+    }
+
+    if (@groups != 8) {
+        die "Invalid IPv6 address: $txt: @groups\n";
+    }
+
+    #warn "IPv6 groups: @groups";
+
+    return pack("nnnnnnnn", @groups), 16;
+}
+
+sub encode_name ($) {
+    my $name = shift;
+    $name =~ s/([^.]+)\.?/chr(length($1)) . $1/ge;
+    $name .= "\0";
+    return $name;
+}
+
+1

controllers/nginx-third-party/lua/vendor/lua-resty-dns-cache/util/lua-releng.pl

@@ -0,0 +1,32 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+
+sub file_contains ($$);
+
+my $version;
+for my $file (map glob, qw{ *.lua lib/*.lua lib/*/*.lua lib/*/*/*.lua lib/*/*/*/*.lua lib/*/*/*/*/*.lua }) {
+
+
+    print "Checking use of Lua global variables in file $file ...\n";
+    system("luac -p -l $file | grep ETGLOBAL | grep -vE 'require|type|tostring|error|ngx|ndk|jit|setmetatable|getmetatable|string|table|io|os|print|tonumber|math|pcall|xpcall|unpack|pairs|ipairs|assert|module|package|coroutine|[gs]etfenv|next|rawget|rawset|rawlen'");
+    file_contains($file, "attempt to write to undeclared variable");
+    #system("grep -H -n -E --color '.{81}' $file");
+}
+
+sub file_contains ($$) {
+    my ($file, $regex) = @_;
+    open my $in, $file
+        or die "Cannot open $file fo reading: $!\n";
+    my $content = do { local $/; <$in> };
+    close $in;
+    #print "$content";
+    return scalar ($content =~ /$regex/);
+}
+
+if (-d 't') {
+    for my $file (map glob, qw{ t/*.t t/*/*.t t/*/*/*.t }) {
+        system(qq{grep -H -n --color -E '\\--- ?(ONLY|LAST)' $file});
+    }
+}

controllers/nginx-third-party/lua/vendor/lua-resty-dns/.gitattributes

@@ -0,0 +1 @@
+*.t linguist-language=Text

controllers/nginx-third-party/lua/vendor/lua-resty-dns/.gitignore

@@ -0,0 +1,10 @@
+*.swp
+*.swo
+*~
+go
+t/servroot/
+reindex
+nginx
+ctags
+tags
+a.lua

controllers/nginx-third-party/lua/vendor/lua-resty-dns/Makefile

@@ -0,0 +1,18 @@
+OPENRESTY_PREFIX=/usr/local/openresty
+
+PREFIX ?=          /usr/local
+LUA_INCLUDE_DIR ?= $(PREFIX)/include
+LUA_LIB_DIR ?=     $(PREFIX)/lib/lua/$(LUA_VERSION)
+INSTALL ?= install
+
+.PHONY: all test install
+
+all: ;
+
+install: all
+	$(INSTALL) -d $(DESTDIR)/$(LUA_LIB_DIR)/resty/dns
+	$(INSTALL) lib/resty/dns/*.lua $(DESTDIR)/$(LUA_LIB_DIR)/resty/dns/
+
+test: all
+	PATH=$(OPENRESTY_PREFIX)/nginx/sbin:$$PATH prove -I../test-nginx/lib -r t
+

controllers/nginx-third-party/lua/vendor/lua-resty-dns/README.markdown

@@ -0,0 +1,404 @@
+Name
+====
+
+lua-resty-dns - Lua DNS resolver for the ngx_lua based on the cosocket API
+
+Table of Contents
+=================
+
+* [Name](#name)
+* [Status](#status)
+* [Description](#description)
+* [Synopsis](#synopsis)
+* [Methods](#methods)
+    * [new](#new)
+    * [query](#query)
+    * [tcp_query](#tcp_query)
+    * [set_timeout](#set_timeout)
+    * [compress_ipv6_addr](#compress_ipv6_addr)
+* [Constants](#constants)
+    * [TYPE_A](#type_a)
+    * [TYPE_NS](#type_ns)
+    * [TYPE_CNAME](#type_cname)
+    * [TYPE_PTR](#type_ptr)
+    * [TYPE_MX](#type_mx)
+    * [TYPE_TXT](#type_txt)
+    * [TYPE_AAAA](#type_aaaa)
+    * [TYPE_SRV](#type_srv)
+    * [TYPE_SPF](#type_spf)
+    * [CLASS_IN](#class_in)
+* [Automatic Error Logging](#automatic-error-logging)
+* [Limitations](#limitations)
+* [TODO](#todo)
+* [Author](#author)
+* [Copyright and License](#copyright-and-license)
+* [See Also](#see-also)
+
+Status
+======
+
+This library is considered production ready.
+
+Description
+===========
+
+This Lua library provies a DNS resolver for the ngx_lua nginx module:
+
+http://wiki.nginx.org/HttpLuaModule
+
+This Lua library takes advantage of ngx_lua's cosocket API, which ensures
+100% nonblocking behavior.
+
+Note that at least [ngx_lua 0.5.12](https://github.com/chaoslawful/lua-nginx-module/tags) or [ngx_openresty 1.2.1.11](http://openresty.org/#Download) is required.
+
+Also, the [bit library](http://bitop.luajit.org/) is also required. If you're using LuaJIT 2.0 with ngx_lua, then the `bit` library is already available by default.
+
+Note that, this library is bundled and enabled by default in the [ngx_openresty bundle](http://openresty.org/).
+
+Synopsis
+========
+
+```lua
+    lua_package_path "/path/to/lua-resty-dns/lib/?.lua;;";
+
+    server {
+        location = /dns {
+            content_by_lua '
+                local resolver = require "resty.dns.resolver"
+                local r, err = resolver:new{
+                    nameservers = {"8.8.8.8", {"8.8.4.4", 53} },
+                    retrans = 5,  -- 5 retransmissions on receive timeout
+                    timeout = 2000,  -- 2 sec
+                }
+
+                if not r then
+                    ngx.say("failed to instantiate the resolver: ", err)
+                    return
+                end
+
+                local answers, err = r:query("www.google.com")
+                if not answers then
+                    ngx.say("failed to query the DNS server: ", err)
+                    return
+                end
+
+                if answers.errcode then
+                    ngx.say("server returned error code: ", answers.errcode,
+                            ": ", answers.errstr)
+                end
+
+                for i, ans in ipairs(answers) do
+                    ngx.say(ans.name, " ", ans.address or ans.cname,
+                            " type:", ans.type, " class:", ans.class,
+                            " ttl:", ans.ttl)
+                end
+            ';
+        }
+    }
+```
+
+[Back to TOC](#table-of-contents)
+
+Methods
+=======
+
+[Back to TOC](#table-of-contents)
+
+new
+---
+`syntax: r, err = class:new(opts)`
+
+Creates a dns.resolver object. Returns `nil` and an message string on error.
+
+It accepts a `opts` table argument. The following options are supported:
+
+* `nameservers`
+
+	a list of nameservers to be used. Each nameserver entry can be either a single hostname string or a table holding both the hostname string and the port number. The nameserver is picked up by a simple round-robin algorithm for each `query` method call. This option is required.
+* `retrans`
+
+	the total number of times of retransmitting the DNS request when receiving a DNS response times out according to the `timeout` setting. Default to `5` times. When trying to retransmit the query, the next nameserver according to the round-robin algorithm will be picked up.
+* `timeout`
+
+	the time in milliseconds for waiting for the respond for a single attempt of request transmition. note that this is ''not'' the maximal total waiting time before giving up, the maximal total waiting time can be calculated by the expression `timeout x retrans`. The `timeout` setting can also be changed by calling the `set_timeout` method. The default `timeout` setting is 2000 milliseconds, or 2 seconds.
+* `no_recurse`
+
+	a boolean flag controls whether to disable the "recursion desired" (RD) flag in the UDP request. Default to `false`.
+
+[Back to TOC](#table-of-contents)
+
+query
+-----
+`syntax: answers, err = r:query(name, options?)`
+
+Performs a DNS standard query to the nameservers specified by the `new` method,
+and returns all the answer records in an array-like Lua table. In case of errors, it will
+return `nil` and a string describing the error instead.
+
+If the server returns a non-zero error code, the fields `errcode` and `errstr` will be set accordingly in the Lua table returned.
+
+Each entry in the `answers` returned table value is also a hash-like Lua table
+which usually takes some of the following fields:
+
+* `name`
+
+	The resource record name.
+* `type`
+
+	The current resource record type, possible values are `1` (`TYPE_A`), `5` (`TYPE_CNAME`), `28` (`TYPE_AAAA`), and any other values allowed by RFC 1035.
+* `address`
+
+	The IPv4 or IPv6 address in their textual representations when the resource record type is either `1` (`TYPE_A`) or `28` (`TYPE_AAAA`), respectively. Secussesive 16-bit zero groups in IPv6 addresses will not be compressed by default, if you want that, you need to call the `compress_ipv6_addr` static method instead.
+* `cname`
+
+	The (decoded) record data value for `CNAME` resource records. Only present for `CNAME` records.
+* `ttl`
+
+	The time-to-live (TTL) value in seconds for the current resource record.
+* `class`
+
+	The current resource record class, possible values are `1` (`CLASS_IN`) or any other values allowed by RFC 1035.
+* `preference`
+
+	The preference integer number for `MX` resource records. Only present for `MX` type records.
+* `exchange`
+
+	The exchange domain name for `MX` resource records. Only present for `MX` type records.
+* `nsdname`
+
+	A domain-name which specifies a host which should be authoritative for the specified class and domain. Usually present for `NS` type records.
+* `rdata`
+
+	The raw resource data (RDATA) for resource records that are not recognized.
+* `txt`
+
+	The record value for `TXT` records. When there is only one character string in this record, then this field takes a single Lua string. Otherwise this field takes a Lua table holding all the strings.
+* `ptrdname`
+
+	The record value for `PTR` records.
+
+This method also takes an optional `options` argument table, which takes the following fields:
+
+* `qtype`
+
+	The type of the question. Possible values are `1` (`TYPE_A`), `5` (`TYPE_CNAME`), `28` (`TYPE_AAAA`), or any other QTYPE value specified by RFC 1035 and RFC 3596. Default to `1` (`TYPE_A`).
+
+When data truncation happens, the resolver will automatically retry using the TCP transport mode
+to query the current nameserver. All TCP connections are short lived.
+
+[Back to TOC](#table-of-contents)
+
+tcp_query
+---------
+`syntax: answers, err = r:tcp_query(name, options?)`
+
+Just like the `query` method, but enforce the TCP transport mode instead of UDP.
+
+All TCP connections are short lived.
+
+Here is an example:
+
+```lua
+    local resolver = require "resty.dns.resolver"
+
+    local r, err = resolver:new{
+        nameservers = { "8.8.8.8" }
+    }
+    if not r then
+        ngx.say("failed to instantiate resolver: ", err)
+        return
+    end
+
+    local ans, err = r:tcp_query("www.google.com", { qtype = r.TYPE_A })
+    if not ans then
+        ngx.say("failed to query: ", err)
+        return
+    end
+
+    local cjson = require "cjson"
+    ngx.say("records: ", cjson.encode(ans))
+```
+
+[Back to TOC](#table-of-contents)
+
+set_timeout
+-----------
+`syntax: r:set_timeout(time)`
+
+Overrides the current `timeout` setting by the `time` argument in milliseconds for all the nameserver peers.
+
+[Back to TOC](#table-of-contents)
+
+compress_ipv6_addr
+------------------
+`syntax: compressed = resty.dns.resolver.compress_ipv6_addr(address)`
+
+Compresses the successive 16-bit zero groups in the textual format of the IPv6 address.
+
+For example,
+
+```lua
+    local resolver = require "resty.dns.resolver"
+    local compress = resolver.compress_ipv6_addr
+    local new_addr = compress("FF01:0:0:0:0:0:0:101")
+```
+
+will yield `FF01::101` in the `new_addr` return value.
+
+[Back to TOC](#table-of-contents)
+
+Constants
+=========
+
+[Back to TOC](#table-of-contents)
+
+TYPE_A
+------
+
+The `A` resource record type, equal to the decimal number `1`.
+
+[Back to TOC](#table-of-contents)
+
+TYPE_NS
+-------
+
+The `NS` resource record type, equal to the decimal number `2`.
+
+[Back to TOC](#table-of-contents)
+
+TYPE_CNAME
+----------
+
+The `CNAME` resource record type, equal to the decimal number `5`.
+
+[Back to TOC](#table-of-contents)
+
+TYPE_PTR
+--------
+
+The `PTR` resource record type, equal to the decimal number `12`.
+
+[Back to TOC](#table-of-contents)
+
+TYPE_MX
+-------
+
+The `MX` resource record type, equal to the decimal number `15`.
+
+[Back to TOC](#table-of-contents)
+
+TYPE_TXT
+--------
+
+The `TXT` resource record type, equal to the decimal number `16`.
+
+[Back to TOC](#table-of-contents)
+
+TYPE_AAAA
+---------
+`syntax: typ = r.TYPE_AAAA`
+
+The `AAAA` resource record type, equal to the decimal number `28`.
+
+[Back to TOC](#table-of-contents)
+
+TYPE_SRV
+---------
+`syntax: typ = r.TYPE_SRV`
+
+The `SRV` resource record type, equal to the decimal number `33`.
+
+See RFC 2782 for details.
+
+[Back to TOC](#table-of-contents)
+
+TYPE_SPF
+---------
+`syntax: typ = r.TYPE_SPF`
+
+The `SPF` resource record type, equal to the decimal number `99`.
+
+See RFC 4408 for details.
+
+[Back to TOC](#table-of-contents)
+
+CLASS_IN
+--------
+`syntax: class = r.CLASS_IN`
+
+The `Internet` resource record type, equal to the decimal number `1`.
+
+[Back to TOC](#table-of-contents)
+
+Automatic Error Logging
+=======================
+
+By default the underlying [ngx_lua](http://wiki.nginx.org/HttpLuaModule) module
+does error logging when socket errors happen. If you are already doing proper error
+handling in your own Lua code, then you are recommended to disable this automatic error logging by turning off [ngx_lua](http://wiki.nginx.org/HttpLuaModule)'s [lua_socket_log_errors](http://wiki.nginx.org/HttpLuaModule#lua_socket_log_errors) directive, that is,
+
+```nginx
+    lua_socket_log_errors off;
+```
+
+[Back to TOC](#table-of-contents)
+
+Limitations
+===========
+
+* This library cannot be used in code contexts like set_by_lua*, log_by_lua*, and
+header_filter_by_lua* where the ngx_lua cosocket API is not available.
+* The `resty.dns.resolver` object instance cannot be stored in a Lua variable at the Lua module level,
+because it will then be shared by all the concurrent requests handled by the same nginx
+ worker process (see
+http://wiki.nginx.org/HttpLuaModule#Data_Sharing_within_an_Nginx_Worker ) and
+result in bad race conditions when concurrent requests are trying to use the same `resty.dns.resolver` instance.
+You should always initiate `resty.dns.resolver` objects in function local
+variables or in the `ngx.ctx` table. These places all have their own data copies for
+each request.
+
+[Back to TOC](#table-of-contents)
+
+TODO
+====
+
+* Concurrent (or parallel) query mode
+* Better support for other resource record types like `TLSA`.
+
+[Back to TOC](#table-of-contents)
+
+Author
+======
+
+Yichun "agentzh" Zhang (章亦春) <agentzh@gmail.com>, CloudFlare Inc.
+
+[Back to TOC](#table-of-contents)
+
+Copyright and License
+=====================
+
+This module is licensed under the BSD license.
+
+Copyright (C) 2012-2014, by Yichun "agentzh" Zhang (章亦春) <agentzh@gmail.com>, CloudFlare Inc.
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+[Back to TOC](#table-of-contents)
+
+See Also
+========
+* the ngx_lua module: http://wiki.nginx.org/HttpLuaModule
+* the [lua-resty-memcached](https://github.com/agentzh/lua-resty-memcached) library.
+* the [lua-resty-redis](https://github.com/agentzh/lua-resty-redis) library.
+* the [lua-resty-mysql](https://github.com/agentzh/lua-resty-mysql) library.
+
+[Back to TOC](#table-of-contents)
+

controllers/nginx-third-party/lua/vendor/lua-resty-dns/lib/resty/dns/resolver.lua

@@ -0,0 +1,803 @@
+-- Copyright (C) Yichun Zhang (agentzh)
+
+
+-- local socket = require "socket"
+local bit = require "bit"
+local udp = ngx.socket.udp
+local rand = math.random
+local char = string.char
+local byte = string.byte
+local find = string.find
+local gsub = string.gsub
+local sub = string.sub
+local format = string.format
+local band = bit.band
+local rshift = bit.rshift
+local lshift = bit.lshift
+local insert = table.insert
+local concat = table.concat
+local re_sub = ngx.re.sub
+local tcp = ngx.socket.tcp
+local log = ngx.log
+local DEBUG = ngx.DEBUG
+local randomseed = math.randomseed
+local ngx_time = ngx.time
+local setmetatable = setmetatable
+local type = type
+
+
+local DOT_CHAR = byte(".")
+
+
+local TYPE_A      = 1
+local TYPE_NS     = 2
+local TYPE_CNAME  = 5
+local TYPE_PTR    = 12
+local TYPE_MX     = 15
+local TYPE_TXT    = 16
+local TYPE_AAAA   = 28
+local TYPE_SRV    = 33
+local TYPE_SPF    = 99
+
+local CLASS_IN    = 1
+
+
+local _M = {
+    _VERSION    = '0.14',
+    TYPE_A      = TYPE_A,
+    TYPE_NS     = TYPE_NS,
+    TYPE_CNAME  = TYPE_CNAME,
+    TYPE_PTR    = TYPE_PTR,
+    TYPE_MX     = TYPE_MX,
+    TYPE_TXT    = TYPE_TXT,
+    TYPE_AAAA   = TYPE_AAAA,
+    TYPE_SRV    = TYPE_SRV,
+    TYPE_SPF    = TYPE_SPF,
+    CLASS_IN    = CLASS_IN,
+}
+
+
+local resolver_errstrs = {
+    "format error",     -- 1
+    "server failure",   -- 2
+    "name error",       -- 3
+    "not implemented",  -- 4
+    "refused",          -- 5
+}
+
+
+local mt = { __index = _M }
+
+
+function _M.new(class, opts)
+    if not opts then
+        return nil, "no options table specified"
+    end
+
+    local servers = opts.nameservers
+    if not servers or #servers == 0 then
+        return nil, "no nameservers specified"
+    end
+
+    local timeout = opts.timeout or 2000  -- default 2 sec
+
+    local n = #servers
+
+    local socks = {}
+
+    for i = 1, n do
+        local server = servers[i]
+        local sock, err = udp()
+        if not sock then
+            return nil, "failed to create udp socket: " .. err
+        end
+
+        local host, port
+        if type(server) == 'table' then
+            host = server[1]
+            port = server[2] or 53
+
+        else
+            host = server
+            port = 53
+            servers[i] = {host, port}
+        end
+
+        local ok, err = sock:setpeername(host, port)
+        if not ok then
+            return nil, "failed to set peer name: " .. err
+        end
+
+        sock:settimeout(timeout)
+
+        insert(socks, sock)
+    end
+
+    local tcp_sock, err = tcp()
+    if not tcp_sock then
+        return nil, "failed to create tcp socket: " .. err
+    end
+
+    tcp_sock:settimeout(timeout)
+
+    return setmetatable(
+                { cur = rand(1, n), socks = socks,
+                  tcp_sock = tcp_sock,
+                  servers = servers,
+                  retrans = opts.retrans or 5,
+                  no_recurse = opts.no_recurse,
+                }, mt)
+end
+
+
+local function pick_sock(self, socks)
+    local cur = self.cur
+
+    if cur == #socks then
+        self.cur = 1
+    else
+        self.cur = cur + 1
+    end
+
+    return socks[cur]
+end
+
+
+local function _get_cur_server(self)
+    local cur = self.cur
+
+    local servers = self.servers
+
+    if cur == 1 then
+        return servers[#servers]
+    end
+
+    return servers[cur - 1]
+end
+
+
+function _M.set_timeout(self, timeout)
+    local socks = self.socks
+    if not socks then
+        return nil, "not initialized"
+    end
+
+    for i = 1, #socks do
+        local sock = socks[i]
+        sock:settimeout(timeout)
+    end
+
+    local tcp_sock = self.tcp_sock
+    if not tcp_sock then
+        return nil, "not initialized"
+    end
+
+    tcp_sock:settimeout(timeout)
+end
+
+
+local function _encode_name(s)
+    return char(#s) .. s
+end
+
+
+local function _decode_name(buf, pos)
+    local labels = {}
+    local nptrs = 0
+    local p = pos
+    while nptrs < 128 do
+        local fst = byte(buf, p)
+
+        if not fst then
+            return nil, 'truncated';
+        end
+
+        -- print("fst at ", p, ": ", fst)
+
+        if fst == 0 then
+            if nptrs == 0 then
+                pos = pos + 1
+            end
+            break
+        end
+
+        if band(fst, 0xc0) ~= 0 then
+            -- being a pointer
+            if nptrs == 0 then
+                pos = pos + 2
+            end
+
+            nptrs = nptrs + 1
+
+            local snd = byte(buf, p + 1)
+            if not snd then
+                return nil, 'truncated'
+            end
+
+            p = lshift(band(fst, 0x3f), 8) + snd + 1
+
+            -- print("resolving ptr ", p, ": ", byte(buf, p))
+
+        else
+            -- being a label
+            local label = sub(buf, p + 1, p + fst)
+            insert(labels, label)
+
+            -- print("resolved label ", label)
+
+            p = p + fst + 1
+
+            if nptrs == 0 then
+                pos = p
+            end
+        end
+    end
+
+    return concat(labels, "."), pos
+end
+
+
+local function _build_request(qname, id, no_recurse, opts)
+    local qtype
+
+    if opts then
+        qtype = opts.qtype
+    end
+
+    if not qtype then
+        qtype = 1  -- A record
+    end
+
+    local ident_hi = char(rshift(id, 8))
+    local ident_lo = char(band(id, 0xff))
+
+    local flags
+    if no_recurse then
+        -- print("found no recurse")
+        flags = "\0\0"
+    else
+        flags = "\1\0"
+    end
+
+    local nqs = "\0\1"
+    local nan = "\0\0"
+    local nns = "\0\0"
+    local nar = "\0\0"
+    local typ = "\0" .. char(qtype)
+    local class = "\0\1"    -- the Internet class
+
+    if byte(qname, 1) == DOT_CHAR then
+        return nil, "bad name"
+    end
+
+    local name = gsub(qname, "([^.]+)%.?", _encode_name) .. '\0'
+
+    return {
+        ident_hi, ident_lo, flags, nqs, nan, nns, nar,
+        name, typ, class
+    }
+end
+
+
+local function parse_response(buf, id)
+    local n = #buf
+    if n < 12 then
+        return nil, 'truncated';
+    end
+
+    -- header layout: ident flags nqs nan nns nar
+
+    local ident_hi = byte(buf, 1)
+    local ident_lo = byte(buf, 2)
+    local ans_id = lshift(ident_hi, 8) + ident_lo
+
+    -- print("id: ", id, ", ans id: ", ans_id)
+
+    if ans_id ~= id then
+        -- identifier mismatch and throw it away
+        log(DEBUG, "id mismatch in the DNS reply: ", ans_id, " ~= ", id)
+        return nil, "id mismatch"
+    end
+
+    local flags_hi = byte(buf, 3)
+    local flags_lo = byte(buf, 4)
+    local flags = lshift(flags_hi, 8) + flags_lo
+
+    -- print(format("flags: 0x%x", flags))
+
+    if band(flags, 0x8000) == 0 then
+        return nil, format("bad QR flag in the DNS response")
+    end
+
+    if band(flags, 0x200) ~= 0 then
+        return nil, "truncated"
+    end
+
+    local code = band(flags, 0x7f)
+
+    -- print(format("code: %d", code))
+
+    local nqs_hi = byte(buf, 5)
+    local nqs_lo = byte(buf, 6)
+    local nqs = lshift(nqs_hi, 8) + nqs_lo
+
+    -- print("nqs: ", nqs)
+
+    if nqs ~= 1 then
+        return nil, format("bad number of questions in DNS response: %d", nqs)
+    end
+
+    local nan_hi = byte(buf, 7)
+    local nan_lo = byte(buf, 8)
+    local nan = lshift(nan_hi, 8) + nan_lo
+
+    -- print("nan: ", nan)
+
+    -- skip the question part
+
+    local ans_qname, pos = _decode_name(buf, 13)
+    if not ans_qname then
+        return nil, pos
+    end
+
+    -- print("qname in reply: ", ans_qname)
+
+    -- print("question: ", sub(buf, 13, pos))
+
+    if pos + 3 + nan * 12 > n then
+        -- print(format("%d > %d", pos + 3 + nan * 12, n))
+        return nil, 'truncated';
+    end
+
+    -- question section layout: qname qtype(2) qclass(2)
+
+    local type_hi = byte(buf, pos)
+    local type_lo = byte(buf, pos + 1)
+    local ans_type = lshift(type_hi, 8) + type_lo
+
+    -- print("ans qtype: ", ans_type)
+
+    local class_hi = byte(buf, pos + 2)
+    local class_lo = byte(buf, pos + 3)
+    local qclass = lshift(class_hi, 8) + class_lo
+
+    -- print("ans qclass: ", qclass)
+
+    if qclass ~= 1 then
+        return nil, format("unknown query class %d in DNS response", qclass)
+    end
+
+    pos = pos + 4
+
+    local answers = {}
+
+    if code ~= 0 then
+        answers.errcode = code
+        answers.errstr = resolver_errstrs[code] or "unknown"
+    end
+
+    for i = 1, nan do
+        -- print(format("ans %d: qtype:%d qclass:%d", i, qtype, qclass))
+
+        local ans = {}
+        insert(answers, ans)
+
+        local name
+        name, pos = _decode_name(buf, pos)
+        if not name then
+            return nil, pos
+        end
+
+        ans.name = name
+
+        -- print("name: ", name)
+
+        type_hi = byte(buf, pos)
+        type_lo = byte(buf, pos + 1)
+        local typ = lshift(type_hi, 8) + type_lo
+
+        ans.type = typ
+
+        -- print("type: ", typ)
+
+        class_hi = byte(buf, pos + 2)
+        class_lo = byte(buf, pos + 3)
+        local class = lshift(class_hi, 8) + class_lo
+
+        ans.class = class
+
+        -- print("class: ", class)
+
+        local ttl_bytes = { byte(buf, pos + 4, pos + 7) }
+
+        -- print("ttl bytes: ", concat(ttl_bytes, " "))
+
+        local ttl = lshift(ttl_bytes[1], 24) + lshift(ttl_bytes[2], 16)
+                    + lshift(ttl_bytes[3], 8) + ttl_bytes[4]
+
+        -- print("ttl: ", ttl)
+
+        ans.ttl = ttl
+
+        local len_hi = byte(buf, pos + 8)
+        local len_lo = byte(buf, pos + 9)
+        local len = lshift(len_hi, 8) + len_lo
+
+        -- print("record len: ", len)
+
+        pos = pos + 10
+
+        if typ == TYPE_A then
+
+            if len ~= 4 then
+                return nil, "bad A record value length: " .. len
+            end
+
+            local addr_bytes = { byte(buf, pos, pos + 3) }
+            local addr = concat(addr_bytes, ".")
+            -- print("ipv4 address: ", addr)
+
+            ans.address = addr
+
+            pos = pos + 4
+
+        elseif typ == TYPE_CNAME then
+
+            local cname, p = _decode_name(buf, pos)
+            if not cname then
+                return nil, pos
+            end
+
+            if p - pos ~= len then
+                return nil, format("bad cname record length: %d ~= %d",
+                                   p - pos, len)
+            end
+
+            pos = p
+
+            -- print("cname: ", cname)
+
+            ans.cname = cname
+
+        elseif typ == TYPE_AAAA then
+
+            if len ~= 16 then
+                return nil, "bad AAAA record value length: " .. len
+            end
+
+            local addr_bytes = { byte(buf, pos, pos + 15) }
+            local flds = {}
+            local comp_begin, comp_end
+            for i = 1, 16, 2 do
+                local a = addr_bytes[i]
+                local b = addr_bytes[i + 1]
+                if a == 0 then
+                    insert(flds, format("%x", b))
+
+                else
+                    insert(flds, format("%x%02x", a, b))
+                end
+            end
+
+            -- we do not compress the IPv6 addresses by default
+            --  due to performance considerations
+
+            ans.address = concat(flds, ":")
+
+            pos = pos + 16
+
+        elseif typ == TYPE_MX then
+
+            -- print("len = ", len)
+
+            if len < 3 then
+                return nil, "bad MX record value length: " .. len
+            end
+
+            local pref_hi = byte(buf, pos)
+            local pref_lo = byte(buf, pos + 1)
+
+            ans.preference = lshift(pref_hi, 8) + pref_lo
+
+            local host, p = _decode_name(buf, pos + 2)
+            if not host then
+                return nil, pos
+            end
+
+            if p - pos ~= len then
+                return nil, format("bad cname record length: %d ~= %d",
+                                   p - pos, len)
+            end
+
+            ans.exchange = host
+
+            pos = p
+
+        elseif typ == TYPE_SRV then
+            if len < 7 then
+                return nil, "bad SRV record value length: " .. len
+            end
+
+            local prio_hi = byte(buf, pos)
+            local prio_lo = byte(buf, pos + 1)
+            ans.priority = lshift(prio_hi, 8) + prio_lo
+
+            local weight_hi = byte(buf, pos + 2)
+            local weight_lo = byte(buf, pos + 3)
+            ans.weight = lshift(weight_hi, 8) + weight_lo
+
+            local port_hi = byte(buf, pos + 4)
+            local port_lo = byte(buf, pos + 5)
+            ans.port = lshift(port_hi, 8) + port_lo
+
+            local name, p = _decode_name(buf, pos + 6)
+            if not name then
+                return nil, pos
+            end
+
+            if p - pos ~= len then
+                return nil, format("bad srv record length: %d ~= %d",
+                                   p - pos, len)
+            end
+
+            ans.target = name
+
+            pos = p
+
+        elseif typ == TYPE_NS then
+
+            local name, p = _decode_name(buf, pos)
+            if not name then
+                return nil, pos
+            end
+
+            if p - pos ~= len then
+                return nil, format("bad cname record length: %d ~= %d",
+                                   p - pos, len)
+            end
+
+            pos = p
+
+            -- print("name: ", name)
+
+            ans.nsdname = name
+
+        elseif typ == TYPE_TXT or typ == TYPE_SPF then
+
+            local key = (typ == TYPE_TXT) and "txt" or "spf"
+
+            local slen = byte(buf, pos)
+            if slen + 1 > len then
+                -- truncate the over-run TXT record data
+                slen = len
+            end
+
+            -- print("slen: ", len)
+
+            local val = sub(buf, pos + 1, pos + slen)
+            local last = pos + len
+            pos = pos + slen + 1
+
+            if pos < last then
+                -- more strings to be processed
+                -- this code path is usually cold, so we do not
+                -- merge the following loop on this code path
+                -- with the processing logic above.
+
+                val = {val}
+                local idx = 2
+                repeat
+                    local slen = byte(buf, pos)
+                    if pos + slen + 1 > last then
+                        -- truncate the over-run TXT record data
+                        slen = last - pos - 1
+                    end
+
+                    val[idx] = sub(buf, pos + 1, pos + slen)
+                    idx = idx + 1
+                    pos = pos + slen + 1
+
+                until pos >= last
+            end
+
+            ans[key] = val
+
+        elseif typ == TYPE_PTR then
+
+            local name, p = _decode_name(buf, pos)
+            if not name then
+                return nil, pos
+            end
+
+            if p - pos ~= len then
+                return nil, format("bad cname record length: %d ~= %d",
+                                   p - pos, len)
+            end
+
+            pos = p
+
+            -- print("name: ", name)
+
+            ans.ptrdname = name
+
+        else
+            -- for unknown types, just forward the raw value
+
+            ans.rdata = sub(buf, pos, pos + len - 1)
+            pos = pos + len
+        end
+    end
+
+    return answers
+end
+
+
+local function _gen_id(self)
+    local id = self._id   -- for regression testing
+    if id then
+        return id
+    end
+    return rand(0, 65535)   -- two bytes
+end
+
+
+local function _tcp_query(self, query, id)
+    local sock = self.tcp_sock
+    if not sock then
+        return nil, "not initialized"
+    end
+
+    log(DEBUG, "query the TCP server due to reply truncation")
+
+    local server = _get_cur_server(self)
+
+    local ok, err = sock:connect(server[1], server[2])
+    if not ok then
+        return nil, "failed to connect to TCP server "
+            .. concat(server, ":") .. ": " .. err
+    end
+
+    query = concat(query, "")
+    local len = #query
+
+    local len_hi = char(rshift(len, 8))
+    local len_lo = char(band(len, 0xff))
+
+    local bytes, err = sock:send({len_hi, len_lo, query})
+    if not bytes then
+        return nil, "failed to send query to TCP server "
+            .. concat(server, ":") .. ": " .. err
+    end
+
+    local buf, err = sock:receive(2)
+    if not buf then
+        return nil, "failed to receive the reply length field from TCP server "
+            .. concat(server, ":") .. ": " .. err
+    end
+
+    local len_hi = byte(buf, 1)
+    local len_lo = byte(buf, 2)
+    local len = lshift(len_hi, 8) + len_lo
+
+    -- print("tcp message len: ", len)
+
+    buf, err = sock:receive(len)
+    if not buf then
+        return nil, "failed to receive the reply message body from TCP server "
+            .. concat(server, ":") .. ": " .. err
+    end
+
+    local answers, err = parse_response(buf, id)
+    if not answers then
+        return nil, "failed to parse the reply from the TCP server "
+            .. concat(server, ":") .. ": " .. err
+    end
+
+    sock:close()
+
+    return answers
+end
+
+
+function _M.tcp_query(self, qname, opts)
+    local socks = self.socks
+    if not socks then
+        return nil, "not initialized"
+    end
+
+    pick_sock(self, socks)
+
+    local id = _gen_id(self)
+
+    local query, err = _build_request(qname, id, self.no_recurse, opts)
+    if not query then
+        return nil, err
+    end
+
+    return _tcp_query(self, query, id)
+end
+
+
+function _M.query(self, qname, opts)
+    local socks = self.socks
+    if not socks then
+        return nil, "not initialized"
+    end
+
+    local id = _gen_id(self)
+
+    local query, err = _build_request(qname, id, self.no_recurse, opts)
+    if not query then
+        return nil, err
+    end
+
+    -- local cjson = require "cjson"
+    -- print("query: ", cjson.encode(concat(query, "")))
+
+    local retrans = self.retrans
+
+    -- print("retrans: ", retrans)
+
+    for i = 1, retrans do
+        local sock = pick_sock(self, socks)
+
+        local ok, err = sock:send(query)
+        if not ok then
+            local server = _get_cur_server(self)
+            return nil, "failed to send request to UDP server "
+                .. concat(server, ":") .. ": " .. err
+        end
+
+        local buf, err
+
+        for j = 1, 128 do
+            buf, err = sock:receive(4096)
+
+            if err then
+                break
+            end
+
+            if buf then
+                local answers
+                answers, err = parse_response(buf, id)
+                if not answers then
+                    if err == "truncated" then
+                        return _tcp_query(self, query, id)
+                    end
+
+                    if err ~= "id mismatch" then
+                        return nil, err
+                    end
+
+                    -- retry receiving when err == "id mismatch"
+                else
+                    return answers
+                end
+            end
+        end
+
+        if err ~= "timeout" or i == retrans then
+            local server = _get_cur_server(self)
+            return nil, "failed to receive reply from UDP server "
+                .. concat(server, ":") .. ": " .. err
+        end
+    end
+
+    -- impossible to reach here
+end
+
+
+function _M.compress_ipv6_addr(addr)
+    local addr = re_sub(addr, "^(0:)+|(:0)+$|:(0:)+", "::", "jo")
+    if addr == "::0" then
+        addr = "::"
+    end
+
+    return addr
+end
+
+
+randomseed(ngx_time())
+
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-dns/t/TestDNS.pm

@@ -0,0 +1,271 @@
+package TestDNS;
+
+use strict;
+use warnings;
+
+use 5.010001;
+use Test::Nginx::Socket::Lua -Base;
+#use JSON::XS;
+
+use constant {
+    TYPE_A => 1,
+    TYPE_TXT => 16,
+    TYPE_CNAME => 5,
+    TYPE_AAAA => 28,
+    CLASS_INTERNET => 1,
+};
+
+sub encode_name ($);
+sub encode_ipv4 ($);
+sub encode_ipv6 ($);
+sub gen_dns_reply ($$);
+
+sub Test::Base::Filter::dns {
+    my ($self, $code) = @_;
+
+    my $args = $self->current_arguments;
+    #warn "args: $args";
+    if (defined $args && $args ne 'tcp' && $args ne 'udp') {
+        die "Invalid argument to the \"dns\" filter: $args\n";
+    }
+
+    my $mode = $args // 'udp';
+
+    my $block = $self->current_block;
+
+    my $pointer_spec = $block->dns_pointers;
+    my @pointers;
+    if (defined $pointer_spec) {
+        my @loops = split /\s*,\s*/, $pointer_spec;
+        for my $loop (@loops) {
+            my @nodes = split /\s*=>\s*/, $loop;
+            my $prev;
+            for my $n (@nodes) {
+                if ($n !~ /^\d+$/ || $n == 0) {
+                    die "bad name ID in the --- dns_pointers: $n\n";
+                }
+
+                if (!defined $prev) {
+                    $prev = $n;
+                    next;
+                }
+
+                $pointers[$prev] = $n;
+            }
+        }
+    }
+
+    my $input = eval $code;
+    if ($@) {
+        die "failed to evaluate code $code: $@\n";
+    }
+
+    if (!ref $input) {
+        return $input;
+    }
+
+    if (ref $input eq 'ARRAY') {
+        my @replies;
+        for my $t (@$input) {
+            push @replies, gen_dns_reply($t, $mode);
+        }
+
+        return \@replies;
+    }
+
+    if (ref $input eq 'HASH') {
+        return gen_dns_reply($input, $mode);
+    }
+
+    return $input;
+}
+
+sub gen_dns_reply ($$) {
+    my ($t, $mode) = @_;
+
+    my @raw_names;
+    push @raw_names, \($t->{qname});
+
+    my $answers = $t->{answer} // [];
+    if (!ref $answers) {
+        $answers = [$answers];
+    }
+
+    for my $ans (@$answers) {
+        push @raw_names, \($ans->{name});
+        if (defined $ans->{cname}) {
+            push @raw_names, \($ans->{cname});
+        }
+    }
+
+    for my $rname (@raw_names) {
+        $$rname = encode_name($$rname // "");
+    }
+
+    my $qname = $t->{qname};
+
+    my $s = '';
+
+    my $id = $t->{id} // 0;
+
+    $s .= pack("n", $id);
+    #warn "id: ", length($s), " ", encode_json([$s]);
+
+    my $qr = $t->{qr} // 1;
+
+    my $opcode = $t->{opcode} // 0;
+
+    my $aa = $t->{aa} // 0;
+
+    my $tc = $t->{tc} // 0;
+    my $rd = $t->{rd} // 1;
+    my $ra = $t->{ra} // 1;
+    my $rcode = $t->{rcode} // 0;
+
+    my $flags = ($qr << 15) + ($opcode << 11) + ($aa << 10) + ($tc << 9) + ($rd << 8) + ($ra << 7) + $rcode;
+    #warn sprintf("flags: %b", $flags);
+
+    $flags = pack("n", $flags);
+    $s .= $flags;
+
+    #warn "flags: ", length($flags), " ", encode_json([$flags]);
+
+    my $qdcount = $t->{qdcount} // 1;
+    my $ancount = $t->{ancount} // scalar @$answers;
+    my $nscount = 0;
+    my $arcount = 0;
+
+    $s .= pack("nnnn", $qdcount, $ancount, $nscount, $arcount);
+
+    #warn "qname: ", length($qname), " ", encode_json([$qname]);
+
+    $s .= $qname;
+
+    my $qs_type = $t->{qtype} // TYPE_A;
+    my $qs_class = $t->{qclass} // CLASS_INTERNET;
+
+    $s .= pack("nn", $qs_type, $qs_class);
+
+    for my $ans (@$answers) {
+        my $name = $ans->{name};
+        my $type = $ans->{type};
+        my $class = $ans->{class};
+        my $ttl = $ans->{ttl};
+        my $rdlength = $ans->{rdlength};
+        my $rddata = $ans->{rddata};
+
+        my $ipv4 = $ans->{ipv4};
+        if (defined $ipv4) {
+            my ($data, $len) = encode_ipv4($ipv4);
+            $rddata //= $data;
+            $rdlength //= $len;
+            $type //= TYPE_A;
+            $class //= CLASS_INTERNET;
+        }
+
+        my $ipv6 = $ans->{ipv6};
+        if (defined $ipv6) {
+            my ($data, $len) = encode_ipv6($ipv6);
+            $rddata //= $data;
+            $rdlength //= $len;
+            $type //= TYPE_AAAA;
+            $class //= CLASS_INTERNET;
+        }
+
+        my $cname = $ans->{cname};
+        if (defined $cname) {
+            $rddata //= $cname;
+            $rdlength //= length $rddata;
+            $type //= TYPE_CNAME;
+            $class //= CLASS_INTERNET;
+        }
+
+        my $txt = $ans->{txt};
+        if (defined $txt) {
+            $rddata //= $txt;
+            $rdlength //= length $rddata;
+            $type //= TYPE_TXT;
+            $class //= CLASS_INTERNET;
+        }
+
+        $type //= 0;
+        $class //= 0;
+        $ttl //= 0;
+
+        #warn "rdlength: $rdlength, rddata: ", encode_json([$rddata]), "\n";
+
+        $s .= $name . pack("nnNn", $type, $class, $ttl, $rdlength) . $rddata;
+    }
+
+    if ($mode eq 'tcp') {
+        return pack("n", length($s)) . $s;
+    }
+
+    return $s;
+}
+
+sub encode_ipv4 ($) {
+    my $txt = shift;
+    my @bytes = split /\./, $txt;
+    return pack("CCCC", @bytes), 4;
+}
+
+sub encode_ipv6 ($) {
+    my $txt = shift;
+    my @groups = split /:/, $txt;
+    my $nils = 0;
+    my $nonnils = 0;
+    for my $g (@groups) {
+        if ($g eq '') {
+            $nils++;
+        } else {
+            $nonnils++;
+            $g = hex($g);
+        }
+    }
+
+    my $total = $nils + $nonnils;
+    if ($total > 8 ) {
+        die "Invalid IPv6 address: too many groups: $total: $txt";
+    }
+
+    if ($nils) {
+        my $found = 0;
+        my @new_groups;
+        for my $g (@groups) {
+            if ($g eq '') {
+                if ($found) {
+                    next;
+                }
+
+                for (1 .. 8 - $nonnils) {
+                    push @new_groups, 0;
+                }
+
+                $found = 1;
+
+            } else {
+                push @new_groups, $g;
+            }
+        }
+
+        @groups = @new_groups;
+    }
+
+    if (@groups != 8) {
+        die "Invalid IPv6 address: $txt: @groups\n";
+    }
+
+    #warn "IPv6 groups: @groups";
+
+    return pack("nnnnnnnn", @groups), 16;
+}
+
+sub encode_name ($) {
+    my $name = shift;
+    $name =~ s/([^.]+)\.?/chr(length($1)) . $1/ge;
+    $name .= "\0";
+    return $name;
+}
+
+1

controllers/nginx-third-party/lua/vendor/lua-resty-dns/t/lib/ljson.lua

@@ -0,0 +1,89 @@
+local ngx_null = ngx.null
+local tostring = tostring
+local byte = string.byte
+local gsub = string.gsub
+local sort = table.sort
+local pairs = pairs
+local ipairs = ipairs
+local concat = table.concat
+
+local ok, new_tab = pcall(require, "table.new")
+if not ok then
+    new_tab = function (narr, nrec) return {} end
+end
+
+local _M = {}
+
+local metachars = {
+    ['\t'] = '\\t',
+    ["\\"] = "\\\\",
+    ['"'] = '\\"',
+    ['\r'] = '\\r',
+    ['\n'] = '\\n',
+}
+
+local function encode_str(s)
+    -- XXX we will rewrite this when string.buffer is implemented
+    -- in LuaJIT 2.1 because string.gsub cannot be JIT compiled.
+    return gsub(s, '["\\\r\n\t]', metachars)
+end
+
+local function is_arr(t)
+    local exp = 1
+    for k, _ in pairs(t) do
+        if k ~= exp then
+            return nil
+        end
+        exp = exp + 1
+    end
+    return exp - 1
+end
+
+local encode
+
+encode = function (v)
+    if v == nil or v == ngx_null then
+        return "null"
+    end
+
+    local typ = type(v)
+    if typ == 'string' then
+        return '"' .. encode_str(v) .. '"'
+    end
+
+    if typ == 'number' or typ == 'boolean' then
+        return tostring(v)
+    end
+
+    if typ == 'table' then
+        local n = is_arr(v)
+        if n then
+            local bits = new_tab(n, 0)
+            for i, elem in ipairs(v) do
+                bits[i] = encode(elem)
+            end
+            return "[" .. concat(bits, ",") .. "]"
+        end
+
+        local keys = {}
+        local i = 0
+        for key, _ in pairs(v) do
+            i = i + 1
+            keys[i] = key
+        end
+        sort(keys)
+
+        local bits = new_tab(0, i)
+        i = 0
+        for _, key in ipairs(keys) do
+            i = i + 1
+            bits[i] = encode(key) .. ":" .. encode(v[key])
+        end
+        return "{" .. concat(bits, ",") .. "}"
+    end
+
+    return '"<' .. typ .. '>"'
+end
+_M.encode = encode
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-dns/t/sanity.t

@@ -0,0 +1,502 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket::Lua;
+use Cwd qw(cwd);
+
+repeat_each(2);
+
+plan tests => repeat_each() * (3 * blocks());
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/t/lib/?.lua;$pwd/lib/?.lua;;";
+    lua_package_cpath "/usr/local/openresty-debug/lualib/?.so;/usr/local/openresty/lualib/?.so;;";
+};
+
+$ENV{TEST_NGINX_RESOLVER} ||= '8.8.8.8';
+
+no_long_string();
+
+run_tests();
+
+__DATA__
+
+=== TEST 1: A records
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("www.google.com", { qtype = r.TYPE_A })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[.*?"address":"(?:\d{1,3}\.){3}\d+".*?\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 2: CNAME records
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("www.yahoo.com", { qtype = r.TYPE_CNAME })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[.*?"cname":"[-_a-z0-9.]+".*?\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 3: AAAA records
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("www.google.com", { qtype = r.TYPE_AAAA })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[.*?"address":"[a-fA-F0-9]*(?::[a-fA-F0-9]*)+".*?\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 4: compress ipv6 addr
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local c = resolver.compress_ipv6_addr
+
+            ngx.say(c("1080:0:0:0:8:800:200C:417A"))
+            ngx.say(c("FF01:0:0:0:0:0:0:101"))
+            ngx.say(c("0:0:0:0:0:0:0:1"))
+            ngx.say(c("1:5:0:0:0:0:0:0"))
+            ngx.say(c("7:25:0:0:0:3:0:0"))
+            ngx.say(c("0:0:0:0:0:0:0:0"))
+        ';
+    }
+--- request
+GET /t
+--- response_body
+1080::8:800:200C:417A
+FF01::101
+::1
+1:5::
+7:25::3:0:0
+::
+--- no_error_log
+[error]
+
+
+
+=== TEST 5: A records (TCP)
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:tcp_query("www.google.com", { qtype = r.TYPE_A })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[.*?"address":"(?:\d{1,3}\.){3}\d+".*?\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 6: MX records
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("gmail.com", { qtype = r.TYPE_MX })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[\{.*?"preference":\d+,.*?"exchange":"[^"]+".*?\}\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 7: NS records
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("agentzh.org", { qtype = r.TYPE_NS })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[\{.*?"nsdname":"[^"]+".*?\}\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 8: TXT query (no ans)
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("agentzh.org", { qtype = r.TYPE_TXT })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body
+records: {}
+--- no_error_log
+[error]
+--- timeout: 10
+
+
+
+=== TEST 9: TXT query (with ans)
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("gmail.com", { qtype = r.TYPE_TXT })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[\{.*?"txt":"v=spf\d+\s[^"]+".*?\}\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 10: PTR query
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("4.4.8.8.in-addr.arpa", { qtype = r.TYPE_PTR })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[\{.*?"ptrdname":"google-public-dns-b\.google\.com".*?\}\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 11: domains with a trailing dot
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("www.google.com.", { qtype = r.TYPE_A })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[.*?"address":"(?:\d{1,3}\.){3}\d+".*?\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 12: domains with a leading dot
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query(".www.google.com", { qtype = r.TYPE_A })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body
+failed to query: bad name
+--- no_error_log
+[error]
+
+
+
+=== TEST 13: SRV records or XMPP
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("_xmpp-client._tcp.jabber.org", { qtype = r.TYPE_SRV })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local ljson = require "ljson"
+            ngx.say("records: ", ljson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[(?:{"class":1,"name":"_xmpp-client._tcp.jabber.org","port":\d+,"priority":\d+,"target":"[\w.]+\.jabber.org","ttl":\d+,"type":33,"weight":\d+},?)+\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 14: SPF query (with ans)
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("linkedin.com", { qtype = r.TYPE_SPF })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^records: \[\{.*?"spf":"v=spf\d+\s[^"]+".*?\}\]$
+--- no_error_log
+[error]
+
+
+
+=== TEST 15: SPF query (no ans)
+--- http_config eval: $::HttpConfig
+--- config
+    location /t {
+        content_by_lua '
+            local resolver = require "resty.dns.resolver"
+
+            local r, err = resolver:new{ nameservers = { "$TEST_NGINX_RESOLVER" } }
+            if not r then
+                ngx.say("failed to instantiate resolver: ", err)
+                return
+            end
+
+            local ans, err = r:query("agentzh.org", { qtype = r.TYPE_SPF })
+            if not ans then
+                ngx.say("failed to query: ", err)
+                return
+            end
+
+            local cjson = require "cjson"
+            ngx.say("records: ", cjson.encode(ans))
+        ';
+    }
+--- request
+GET /t
+--- response_body
+records: {}
+--- no_error_log
+[error]
+--- timeout: 10
+

controllers/nginx-third-party/lua/vendor/lua-resty-dns/valgrind.suppress

@@ -0,0 +1,549 @@
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:lj_str_new
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Param
+   write(buf)
+   fun:__write_nocancel
+   fun:ngx_log_error_core
+   fun:ngx_resolver_read_response
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:ngx_sprintf_num
+   fun:ngx_vslprintf
+   fun:ngx_log_error_core
+   fun:ngx_resolver_read_response
+   fun:ngx_epoll_process_events
+   fun:ngx_process_events_and_timers
+   fun:ngx_single_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Addr1
+   fun:ngx_vslprintf
+   fun:ngx_snprintf
+   fun:ngx_sock_ntop
+   fun:ngx_event_accept
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Param
+   write(buf)
+   fun:__write_nocancel
+   fun:ngx_log_error_core
+   fun:ngx_resolver_read_response
+   fun:ngx_event_process_posted
+   fun:ngx_process_events_and_timers
+   fun:ngx_single_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:ngx_sprintf_num
+   fun:ngx_vslprintf
+   fun:ngx_log_error_core
+   fun:ngx_resolver_read_response
+   fun:ngx_event_process_posted
+   fun:ngx_process_events_and_timers
+   fun:ngx_single_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   exp-sgcheck:SorG
+   fun:lj_str_new
+   fun:lua_pushlstring
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   obj:*
+}
+{
+   <insert_a_suppression_name_here>
+   exp-sgcheck:SorG
+   fun:lj_str_new
+   fun:lua_pushlstring
+}
+{
+   <insert_a_suppression_name_here>
+   exp-sgcheck:SorG
+   fun:ngx_http_lua_ndk_set_var_get
+}
+{
+   <insert_a_suppression_name_here>
+   exp-sgcheck:SorG
+   fun:lj_str_new
+   fun:lua_getfield
+}
+{
+   <insert_a_suppression_name_here>
+   exp-sgcheck:SorG
+   fun:lj_str_new
+   fun:lua_setfield
+}
+{
+   <insert_a_suppression_name_here>
+   exp-sgcheck:SorG
+   fun:ngx_http_variables_init_vars
+   fun:ngx_http_block
+}
+{
+   <insert_a_suppression_name_here>
+   exp-sgcheck:SorG
+   fun:ngx_conf_parse
+}
+{
+   <insert_a_suppression_name_here>
+   exp-sgcheck:SorG
+   fun:ngx_vslprintf
+   fun:ngx_log_error_core
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_calloc
+   fun:ngx_event_process_init
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_malloc
+   fun:ngx_pcalloc
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Addr4
+   fun:lj_str_new
+   fun:lua_setfield
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Addr4
+   fun:lj_str_new
+   fun:lua_getfield
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:(below main)
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Param
+   epoll_ctl(event)
+   fun:epoll_ctl
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_event_process_init
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:ngx_conf_flush_files
+   fun:ngx_single_process_cycle
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:memcpy
+   fun:ngx_vslprintf
+   fun:ngx_log_error_core
+   fun:ngx_http_charset_header_filter
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:memalign
+   fun:posix_memalign
+   fun:ngx_memalign
+   fun:ngx_pcalloc
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Addr4
+   fun:lj_str_new
+   fun:lua_pushlstring
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:lj_str_new
+   fun:lj_str_fromnum
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:lj_str_new
+   fun:lua_pushlstring
+}
+{
+   <false_alarm_due_to_u32_alignment_in_luajit2>
+   Memcheck:Addr4
+   fun:lj_str_new
+   fun:lua_setfield
+   fun:ngx_http_lua_cache_store_code
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:lj_str_new
+   fun:lua_getfield
+   fun:ngx_http_lua_cache_load_code
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:lj_str_new
+   fun:lua_setfield
+   fun:ngx_http_lua_cache_store_code
+}
+{
+   <false_alarm_due_to_u32_alignment_in_luajit2>
+   Memcheck:Addr4
+   fun:lj_str_new
+   fun:lua_getfield
+   fun:ngx_http_lua_cache_load_code
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Param
+   socketcall.setsockopt(optval)
+   fun:setsockopt
+   fun:drizzle_state_connect
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_pool_cleanup_add
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_pnalloc
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:ngx_conf_flush_files
+   fun:ngx_single_process_cycle
+   fun:main
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_pcalloc
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_malloc
+   fun:ngx_palloc_large
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_create_pool
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_malloc
+   fun:ngx_palloc
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_malloc
+   fun:ngx_pnalloc
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_array_push
+   fun:ngx_http_get_variable_index
+   fun:ngx_http_memc_add_variable
+   fun:ngx_http_memc_init
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_event_process_init
+   fun:ngx_single_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_crc32_table_init
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_event_process_init
+   fun:ngx_worker_process_init
+   fun:ngx_worker_process_cycle
+   fun:ngx_spawn_process
+   fun:ngx_start_worker_processes
+   fun:ngx_master_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_pcalloc
+   fun:ngx_hash_init
+   fun:ngx_http_variables_init_vars
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_pcalloc
+   fun:ngx_http_upstream_drizzle_create_srv_conf
+   fun:ngx_http_upstream
+   fun:ngx_conf_parse
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_pcalloc
+   fun:ngx_hash_keys_array_init
+   fun:ngx_http_variables_add_core_vars
+   fun:ngx_http_core_preconfiguration
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_array_push
+   fun:ngx_hash_add_key
+   fun:ngx_http_add_variable
+   fun:ngx_http_echo_add_variables
+   fun:ngx_http_echo_handler_init
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_pcalloc
+   fun:ngx_http_upstream_drizzle_create_srv_conf
+   fun:ngx_http_core_server
+   fun:ngx_conf_parse
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_pcalloc
+   fun:ngx_http_upstream_drizzle_create_srv_conf
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_array_push
+   fun:ngx_hash_add_key
+   fun:ngx_http_variables_add_core_vars
+   fun:ngx_http_core_preconfiguration
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_pcalloc
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_hash_init
+   fun:ngx_http_upstream_init_main_conf
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_pcalloc
+   fun:ngx_http_drizzle_keepalive_init
+   fun:ngx_http_upstream_drizzle_init
+   fun:ngx_http_upstream_init_main_conf
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_palloc_large
+   fun:ngx_palloc
+   fun:ngx_hash_init
+   fun:ngx_http_variables_init_vars
+   fun:ngx_http_block
+   fun:ngx_conf_parse
+   fun:ngx_init_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:memalign
+   fun:posix_memalign
+   fun:ngx_memalign
+   fun:ngx_create_pool
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:memalign
+   fun:posix_memalign
+   fun:ngx_memalign
+   fun:ngx_palloc_block
+   fun:ngx_palloc
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:index
+   fun:expand_dynamic_string_token
+   fun:_dl_map_object
+   fun:map_doit
+   fun:_dl_catch_error
+   fun:do_preload
+   fun:dl_main
+   fun:_dl_sysdep_start
+   fun:_dl_start
+}

controllers/nginx-third-party/lua/vendor/lua-resty-http/.gitignore

@@ -0,0 +1,2 @@
+t/servroot/
+t/error.log

controllers/nginx-third-party/lua/vendor/lua-resty-http/LICENSE

@@ -0,0 +1,23 @@
+Copyright (c) 2013, James Hurst
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+  Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+  Redistributions in binary form must reproduce the above copyright notice, this
+  list of conditions and the following disclaimer in the documentation and/or
+  other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

controllers/nginx-third-party/lua/vendor/lua-resty-http/Makefile

@@ -0,0 +1,20 @@
+OPENRESTY_PREFIX=/usr/local/openresty
+
+PREFIX ?=          /usr/local
+LUA_INCLUDE_DIR ?= $(PREFIX)/include
+LUA_LIB_DIR ?=     $(PREFIX)/lib/lua/$(LUA_VERSION)
+INSTALL ?= install
+TEST_FILE ?= t
+
+.PHONY: all test install
+
+all: ;
+
+install: all
+	$(INSTALL) -d $(DESTDIR)/$(LUA_LIB_DIR)/resty
+	$(INSTALL) lib/resty/*.lua $(DESTDIR)/$(LUA_LIB_DIR)/resty/
+
+test: all
+	PATH=$(OPENRESTY_PREFIX)/nginx/sbin:$$PATH TEST_NGINX_NO_SHUFFLE=1 prove -I../test-nginx/lib -r $(TEST_FILE)
+	util/lua-releng
+

controllers/nginx-third-party/lua/vendor/lua-resty-http/README.md

@@ -0,0 +1,422 @@
+# lua-resty-http
+
+Lua HTTP client cosocket driver for [OpenResty](http://openresty.org/) / [ngx_lua](https://github.com/chaoslawful/lua-nginx-module).
+
+# Status
+
+Ready for testing. Probably production ready in most cases, though not yet proven in the wild. Please check the issues list and let me know if you have any problems / questions.
+
+# Features
+
+* HTTP 1.0 and 1.1
+* Streaming interface to reading bodies using coroutines, for predictable memory usage in Lua land.
+* Alternative simple interface for singleshot requests without manual connection step.
+* Headers treated case insensitively.
+* Chunked transfer encoding.
+* Keepalive.
+* Pipelining.
+* Trailers.
+
+
+# API
+
+* [new](#name)
+* [connect](#connect)
+* [set_timeout](#set_timeout)
+* [ssl_handshake](#ssl_handshake)
+* [set_keepalive](#set_keepalive)
+* [get_reused_times](#get_reused_times)
+* [close](#close)
+* [request](#request)
+* [request_uri](#request_uri)
+* [request_pipeline](#request_pipeline)
+* [Response](#response)
+    * [body_reader](#resbody_reader)
+    * [read_body](#resread_body)
+    * [read_trailes](#resread_trailers)
+* [Proxy](#proxy)
+    * [proxy_request](#proxy_request)
+    * [proxy_response](#proxy_response)
+* [Utility](#utility)
+    * [parse_uri](#parse_uri)
+    * [get_client_body_reader](#get_client_body_reader)
+
+
+## Synopsis
+
+```` lua
+lua_package_path "/path/to/lua-resty-http/lib/?.lua;;";
+
+server {
+
+
+  location /simpleinterface {
+    resolver 8.8.8.8;  # use Google's open DNS server for an example
+
+    content_by_lua '
+
+      -- For simple singleshot requests, use the URI interface.
+      local httpc = http.new()
+      local res, err = httpc:request_uri("http://example.com/helloworld", {
+        method = "POST",
+        body = "a=1&b=2",
+        headers = {
+          ["Content-Type"] = "application/x-www-form-urlencoded",
+        }
+      })
+
+      if not res then
+        ngx.say("failed to request: ", err)
+        return
+      end
+
+      -- In this simple form, there is no manual connection step, so the body is read
+      -- all in one go, including any trailers, and the connection closed or keptalive
+      -- for you.
+
+      ngx.status = res.status
+
+      for k,v in pairs(res.headers) do
+          --
+      end
+
+      ngx.say(res.body)
+    ';
+  }
+
+
+  location /genericinterface {
+    content_by_lua '
+
+      local http = require "resty.http"
+      local httpc = http.new()
+
+      -- The generic form gives us more control. We must connect manually.
+      httpc:set_timeout(500)
+      httpc:connect("127.0.0.1", 80)
+
+      -- And request using a path, rather than a full URI.
+      local res, err = httpc:request{
+          path = "/helloworld",
+          headers = {
+              ["Host"] = "example.com",
+          },
+      }
+
+      if not res then
+        ngx.say("failed to request: ", err)
+        return
+      end
+
+      -- Now we can use the body_reader iterator, to stream the body according to our desired chunk size.
+      local reader = res.body_reader
+
+      repeat
+        local chunk, err = reader(8192)
+        if err then
+          ngx.log(ngx.ERR, err)
+          break
+        end
+
+        if chunk then
+          -- process
+        end
+      until not chunk
+
+      local ok, err = httpc:set_keepalive()
+      if not ok then
+        ngx.say("failed to set keepalive: ", err)
+        return
+      end
+    ';
+  }
+}
+````
+
+# Connection
+
+## new
+
+`syntax: httpc = http.new()`
+
+Creates the http object. In case of failures, returns `nil` and a string describing the error.
+
+## connect
+
+`syntax: ok, err = httpc:connect(host, port, options_table?)`
+
+`syntax: ok, err = httpc:connect("unix:/path/to/unix.sock", options_table?)`
+
+Attempts to connect to the web server.
+
+Before actually resolving the host name and connecting to the remote backend, this method will always look up the connection pool for matched idle connections created by previous calls of this method.
+
+An optional Lua table can be specified as the last argument to this method to specify various connect options:
+
+* `pool`
+: Specifies a custom name for the connection pool being used. If omitted, then the connection pool name will be generated from the string template `<host>:<port>` or `<unix-socket-path>`.
+
+## set_timeout
+
+`syntax: httpc:set_timeout(time)`
+
+Sets the timeout (in ms) protection for subsequent operations, including the `connect` method.
+
+## ssl_handshake
+
+`syntax: session, err = httpc:ssl_handshake(session, host, verify)`
+
+Performs an SSL handshake on the TCP connection, only availble in ngx_lua > v0.9.11
+
+See docs for [ngx.socket.tcp](https://github.com/openresty/lua-nginx-module#ngxsockettcp) for details.
+
+## set_keepalive
+
+`syntax: ok, err = httpc:set_keepalive(max_idle_timeout, pool_size)`
+
+Attempts to puts the current connection into the ngx_lua cosocket connection pool.
+
+You can specify the max idle timeout (in ms) when the connection is in the pool and the maximal size of the pool every nginx worker process.
+
+Only call this method in the place you would have called the `close` method instead. Calling this method will immediately turn the current http object into the `closed` state. Any subsequent operations other than `connect()` on the current objet will return the `closed` error.
+
+Note that calling this instead of `close` is "safe" in that it will conditionally close depending on the type of request. Specifically, a `1.0` request without `Connection: Keep-Alive` will be closed, as will a `1.1` request with `Connection: Close`.
+
+In case of success, returns `1`. In case of errors, returns `nil, err`. In the case where the conneciton is conditionally closed as described above, returns `2` and the error string `connection must be closed`.
+
+## get_reused_times
+
+`syntax: times, err = httpc:get_reused_times()`
+
+This method returns the (successfully) reused times for the current connection. In case of error, it returns `nil` and a string describing the error.
+
+If the current connection does not come from the built-in connection pool, then this method always returns `0`, that is, the connection has never been reused (yet). If the connection comes from the connection pool, then the return value is always non-zero. So this method can also be used to determine if the current connection comes from the pool.
+
+## close
+
+`syntax: ok, err = http:close()`
+
+Closes the current connection and returns the status.
+
+In case of success, returns `1`. In case of errors, returns `nil` with a string describing the error.
+
+
+# Requesting
+
+## request
+
+`syntax: res, err = httpc:request(params)`
+
+Returns a `res` table or `nil` and an error message.
+
+The `params` table accepts the following fields:
+
+* `version` The HTTP version number, currently supporting 1.0 or 1.1.
+* `method` The HTTP method string.
+* `path` The path string.
+* `headers` A table of request headers.
+* `body` The request body as a string, or an iterator function (see [get_client_body_reader](#get_client_body_reader)).
+* `ssl_verify` Verify SSL cert matches hostname
+
+When the request is successful, `res` will contain the following fields:
+
+* `status` The status code.
+* `headers` A table of headers. Multiple headers with the same field name will be presented as a table of values.
+* `has_body` A boolean flag indicating if there is a body to be read. 
+* `body_reader` An iterator function for reading the body in a streaming fashion.
+* `read_body` A method to read the entire body into a string.
+* `read_trailers` A method to merge any trailers underneath the headers, after reading the body.
+
+## request_uri
+
+`syntax: res, err = httpc:request_uri(uri, params)`
+
+The simple interface. Options supplied in the `params` table are the same as in the generic interface, and will override components found in the uri itself.
+
+In this mode, there is no need to connect manually first. The connection is made on your behalf, suiting cases where you simply need to grab a URI without too much hassle.
+
+Additionally there is no ability to stream the response body in this mode. If the request is successful, `res` will contain the following fields:
+
+* `status` The status code.
+* `headers` A table of headers.
+* `body` The response body as a string.
+
+
+## request_pipeline
+
+`syntax: responses, err = httpc:request_pipeline(params)`
+
+This method works as per the [request](#request) method above, but `params` is instead a table of param tables. Each request is sent in order, and `responses` is returned as a table of response handles. For example:
+
+```lua
+local responses = httpc:request_pipeline{
+  {
+    path = "/b",
+  },
+  {
+    path = "/c",
+  },
+  {
+    path = "/d",
+  }
+}
+
+for i,r in ipairs(responses) do
+  if r.status then
+    ngx.say(r.status)
+    ngx.say(r:read_body())
+  end
+end
+```
+
+Due to the nature of pipelining, no responses are actually read until you attempt to use the response fields (status / headers etc). And since the responses are read off in order, you must read the entire body (and any trailers if you have them), before attempting to read the next response.
+
+Note this doesn't preclude the use of the streaming response body reader. Responses can still be streamed, so long as the entire body is streamed before attempting to access the next response.
+
+Be sure to test at least one field (such as status) before trying to use the others, in case a socket read error has occurred.
+
+# Response
+
+## res.body_reader
+
+The `body_reader` iterator can be used to stream the response body in chunk sizes of your choosing, as follows:
+
+````lua
+local reader = res.body_reader
+
+repeat
+  local chunk, err = reader(8192)
+  if err then
+    ngx.log(ngx.ERR, err)
+    break
+  end
+  
+  if chunk then
+    -- process
+  end
+until not chunk
+````
+
+If the reader is called with no arguments, the behaviour depends on the type of connection. If the response is encoded as chunked, then the iterator will return the chunks as they arrive. If not, it will simply return the entire body.
+
+Note that the size provided is actually a **maximum** size. So in the chunked transfer case, you may get chunks smaller than the size you ask, as a remainder of the actual HTTP chunks.
+
+## res:read_body
+
+`syntax: body, err = res:read_body()`
+
+Reads the entire body into a local string.
+
+
+## res:read_trailers
+
+`syntax: res:read_trailers()`
+
+This merges any trailers underneath the `res.headers` table itself. Must be called after reading the body.
+
+
+# Proxy
+
+There are two convenience methods for when one simply wishes to proxy the current request to the connected upstream, and safely send it downstream to the client, as a reverse proxy. A complete example:
+
+```lua
+local http = require "resty.http"
+local httpc = http.new()
+
+httpc:set_timeout(500)
+local ok, err = httpc:connect(HOST, PORT)
+
+if not ok then
+  ngx.log(ngx.ERR, err)
+  return
+end
+
+httpc:set_timeout(2000)
+httpc:proxy_response(httpc:proxy_request())
+httpc:set_keepalive()
+```
+
+
+## proxy_request
+
+`syntax: local res, err = httpc:proxy_request(request_body_chunk_size?)`
+
+Performs a request using the current client request arguments, effectively proxying to the connected upstream. The request body will be read in a streaming fashion, according to `request_body_chunk_size` (see [documentation on the client body reader](#get_client_body_reader) below).
+
+
+## proxy_response
+
+`syntax: httpc:proxy_response(res, chunksize?)`
+
+Sets the current response based on the given `res`. Ensures that hop-by-hop headers are not sent downstream, and will read the response according to `chunksize` (see [documentation on the body reader](#resbody_reader) above).
+
+
+# Utility
+
+## parse_uri
+
+`syntax: local scheme, host, port, path = unpack(httpc:parse_uri(uri))`
+
+This is a convenience function allowing one to more easily use the generic interface, when the input data is a URI. 
+
+
+## get_client_body_reader
+
+`syntax: reader, err = httpc:get_client_body_reader(chunksize?, sock?)`
+
+Returns an iterator function which can be used to read the downstream client request body in a streaming fashion. You may also specify an optional default chunksize (default is `65536`), or an already established socket in
+place of the client request.
+
+Example:
+
+```lua
+local req_reader = httpc:get_client_body_reader()
+
+repeat
+  local chunk, err = req_reader(8192)
+  if err then
+    ngx.log(ngx.ERR, err)
+    break
+  end
+
+  if chunk then
+    -- process
+  end
+until not chunk
+```
+
+This iterator can also be used as the value for the body field in request params, allowing one to stream the request body into a proxied upstream request.
+
+```lua
+local client_body_reader, err = httpc:get_client_body_reader()
+
+local res, err = httpc:request{
+   path = "/helloworld",
+   body = client_body_reader,
+}
+```
+
+If `sock` is specified, 
+
+# Author
+
+James Hurst <james@pintsized.co.uk>
+
+Originally started life based on https://github.com/bakins/lua-resty-http-simple. Cosocket docs and implementation borrowed from the other lua-resty-* cosocket modules.
+
+
+# Licence
+
+This module is licensed under the 2-clause BSD license.
+
+Copyright (c) 2013, James Hurst <james@pintsized.co.uk>
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

controllers/nginx-third-party/lua/vendor/lua-resty-http/lib/resty/http.lua

@@ -0,0 +1,814 @@
+local http_headers = require "resty.http_headers"
+
+local ngx_socket_tcp = ngx.socket.tcp
+local ngx_req = ngx.req
+local ngx_req_socket = ngx_req.socket
+local ngx_req_get_headers = ngx_req.get_headers
+local ngx_req_get_method = ngx_req.get_method
+local str_gmatch = string.gmatch
+local str_lower = string.lower
+local str_upper = string.upper
+local str_find = string.find
+local str_sub = string.sub
+local str_gsub = string.gsub
+local tbl_concat = table.concat
+local tbl_insert = table.insert
+local ngx_encode_args = ngx.encode_args
+local ngx_re_match = ngx.re.match
+local ngx_re_gsub = ngx.re.gsub
+local ngx_log = ngx.log
+local ngx_DEBUG = ngx.DEBUG
+local ngx_ERR = ngx.ERR
+local ngx_NOTICE = ngx.NOTICE
+local ngx_var = ngx.var
+local co_yield = coroutine.yield
+local co_create = coroutine.create
+local co_status = coroutine.status
+local co_resume = coroutine.resume
+
+
+-- http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5.1
+local HOP_BY_HOP_HEADERS = {
+    ["connection"]          = true,
+    ["keep-alive"]          = true,
+    ["proxy-authenticate"]  = true,
+    ["proxy-authorization"] = true,
+    ["te"]                  = true,
+    ["trailers"]            = true,
+    ["transfer-encoding"]   = true,
+    ["upgrade"]             = true,
+    ["content-length"]      = true, -- Not strictly hop-by-hop, but Nginx will deal
+                                    -- with this (may send chunked for example).
+}
+
+
+-- Reimplemented coroutine.wrap, returning "nil, err" if the coroutine cannot
+-- be resumed. This protects user code from inifite loops when doing things like
+-- repeat
+--   local chunk, err = res.body_reader()
+--   if chunk then -- <-- This could be a string msg in the core wrap function.
+--     ...
+--   end
+-- until not chunk
+local co_wrap = function(func)
+    local co = co_create(func)
+    if not co then
+        return nil, "could not create coroutine"
+    else
+        return function(...)
+            if co_status(co) == "suspended" then
+                return select(2, co_resume(co, ...))
+            else
+                return nil, "can't resume a " .. co_status(co) .. " coroutine"
+            end
+        end
+    end
+end
+
+
+local _M = {
+    _VERSION = '0.06',
+}
+_M._USER_AGENT = "lua-resty-http/" .. _M._VERSION .. " (Lua) ngx_lua/" .. ngx.config.ngx_lua_version
+
+local mt = { __index = _M }
+
+
+local HTTP = {
+    [1.0] = " HTTP/1.0\r\n",
+    [1.1] = " HTTP/1.1\r\n",
+}
+
+local DEFAULT_PARAMS = {
+    method = "GET",
+    path = "/",
+    version = 1.1,
+}
+
+
+function _M.new(self)
+    local sock, err = ngx_socket_tcp()
+    if not sock then
+        return nil, err
+    end
+    return setmetatable({ sock = sock, keepalive = true }, mt)
+end
+
+
+function _M.set_timeout(self, timeout)
+    local sock = self.sock
+    if not sock then
+        return nil, "not initialized"
+    end
+
+    return sock:settimeout(timeout)
+end
+
+
+function _M.ssl_handshake(self, ...)
+    local sock = self.sock
+    if not sock then
+        return nil, "not initialized"
+    end
+
+    return sock:sslhandshake(...)
+end
+
+
+function _M.connect(self, ...)
+    local sock = self.sock
+    if not sock then
+        return nil, "not initialized"
+    end
+
+    self.host = select(1, ...)
+    self.keepalive = true
+
+    return sock:connect(...)
+end
+
+
+function _M.set_keepalive(self, ...)
+    local sock = self.sock
+    if not sock then
+        return nil, "not initialized"
+    end
+
+    if self.keepalive == true then
+        return sock:setkeepalive(...)
+    else
+        -- The server said we must close the connection, so we cannot setkeepalive.
+        -- If close() succeeds we return 2 instead of 1, to differentiate between
+        -- a normal setkeepalive() failure and an intentional close().
+        local res, err = sock:close()
+        if res then
+            return 2, "connection must be closed"
+        else
+            return res, err
+        end
+    end
+end
+
+
+function _M.get_reused_times(self)
+    local sock = self.sock
+    if not sock then
+        return nil, "not initialized"
+    end
+
+    return sock:getreusedtimes()
+end
+
+
+function _M.close(self)
+    local sock = self.sock
+    if not sock then
+        return nil, "not initialized"
+    end
+
+    return sock:close()
+end
+
+
+local function _should_receive_body(method, code)
+    if method == "HEAD" then return nil end
+    if code == 204 or code == 304 then return nil end
+    if code >= 100 and code < 200 then return nil end
+    return true
+end
+
+
+function _M.parse_uri(self, uri)
+    local m, err = ngx_re_match(uri, [[^(http[s]*)://([^:/]+)(?::(\d+))?(.*)]],
+        "jo")
+
+    if not m then
+        if err then
+            return nil, "failed to match the uri: " .. err
+        end
+
+        return nil, "bad uri"
+    else
+        if not m[3] then
+            if m[1] == "https" then
+                m[3] = 443
+            else
+                m[3] = 80
+            end
+        end
+        if not m[4] then m[4] = "/" end
+        return m, nil
+    end
+end
+
+
+local function _format_request(params)
+    local version = params.version
+    local headers = params.headers or {}
+
+    local query = params.query or ""
+    if query then
+        if type(query) == "table" then
+            query = "?" .. ngx_encode_args(query)
+        end
+    end
+
+    -- Initialize request
+    local req = {
+        str_upper(params.method),
+        " ",
+        params.path,
+        query,
+        HTTP[version],
+        -- Pre-allocate slots for minimum headers and carriage return.
+        true,
+        true,
+        true,
+    }
+    local c = 6 -- req table index it's faster to do this inline vs table.insert
+
+    -- Append headers
+    for key, values in pairs(headers) do
+        if type(values) ~= "table" then
+            values = {values}
+        end
+
+        key = tostring(key)
+        for _, value in pairs(values) do
+            req[c] = key .. ": " .. tostring(value) .. "\r\n"
+            c = c + 1
+        end
+    end
+
+    -- Close headers
+    req[c] = "\r\n"
+
+    return tbl_concat(req)
+end
+
+
+local function _receive_status(sock)
+    local line, err = sock:receive("*l")
+    if not line then
+        return nil, nil, err
+    end
+
+    return tonumber(str_sub(line, 10, 12)), tonumber(str_sub(line, 6, 8))
+end
+
+
+
+local function _receive_headers(sock)
+    local headers = http_headers.new()
+
+    repeat
+        local line, err = sock:receive("*l")
+        if not line then
+            return nil, err
+        end
+
+        for key, val in str_gmatch(line, "([^:%s]+):%s*(.+)") do
+            if headers[key] then
+                if type(headers[key]) ~= "table" then
+                    headers[key] = { headers[key] }
+                end
+                tbl_insert(headers[key], tostring(val))
+            else
+                headers[key] = tostring(val)
+            end
+        end
+    until str_find(line, "^%s*$")
+
+    return headers, nil
+end
+
+
+local function _chunked_body_reader(sock, default_chunk_size)
+    return co_wrap(function(max_chunk_size)
+        local max_chunk_size = max_chunk_size or default_chunk_size
+        local remaining = 0
+        local length
+
+        repeat
+            -- If we still have data on this chunk
+            if max_chunk_size and remaining > 0 then
+
+                if remaining > max_chunk_size then
+                    -- Consume up to max_chunk_size
+                    length = max_chunk_size
+                    remaining = remaining - max_chunk_size
+                else
+                    -- Consume all remaining
+                    length = remaining
+                    remaining = 0
+                end
+            else -- This is a fresh chunk
+
+                -- Receive the chunk size
+                local str, err = sock:receive("*l")
+                if not str then
+                    co_yield(nil, err)
+                end
+
+                length = tonumber(str, 16)
+
+                if not length then
+                    co_yield(nil, "unable to read chunksize")
+                end
+
+                if max_chunk_size and length > max_chunk_size then
+                    -- Consume up to max_chunk_size
+                    remaining = length - max_chunk_size
+                    length = max_chunk_size
+                end
+            end
+
+            if length > 0 then
+                local str, err = sock:receive(length)
+                if not str then
+                    co_yield(nil, err)
+                end
+
+                max_chunk_size = co_yield(str) or default_chunk_size
+
+                -- If we're finished with this chunk, read the carriage return.
+                if remaining == 0 then
+                    sock:receive(2) -- read \r\n
+                end
+            else
+                -- Read the last (zero length) chunk's carriage return
+                sock:receive(2) -- read \r\n
+            end
+
+        until length == 0
+    end)
+end
+
+
+local function _body_reader(sock, content_length, default_chunk_size)
+    return co_wrap(function(max_chunk_size)
+        local max_chunk_size = max_chunk_size or default_chunk_size
+
+        if not content_length and max_chunk_size then
+            -- We have no length, but wish to stream.
+            -- HTTP 1.0 with no length will close connection, so read chunks to the end.
+            repeat
+                local str, err, partial = sock:receive(max_chunk_size)
+                if not str and err == "closed" then
+                    max_chunk_size = tonumber(co_yield(partial, err) or default_chunk_size)
+                end
+
+                max_chunk_size = tonumber(co_yield(str) or default_chunk_size)
+                if max_chunk_size and max_chunk_size < 0 then max_chunk_size = nil end
+
+                if not max_chunk_size then
+                    ngx_log(ngx_ERR, "Buffer size not specified, bailing")
+                    break
+                end
+            until not str
+
+        elseif not content_length then
+            -- We have no length but don't wish to stream.
+            -- HTTP 1.0 with no length will close connection, so read to the end.
+            co_yield(sock:receive("*a"))
+
+        elseif not max_chunk_size then
+            -- We have a length and potentially keep-alive, but want everything.
+            co_yield(sock:receive(content_length))
+
+        else
+            -- We have a length and potentially a keep-alive, and wish to stream
+            -- the response.
+            local received = 0
+            repeat
+                local length = max_chunk_size
+                if received + length > content_length then
+                    length = content_length - received
+                end
+
+                if length > 0 then
+                    local str, err = sock:receive(length)
+                    if not str then
+                        max_chunk_size = tonumber(co_yield(nil, err) or default_chunk_size)
+                    end
+                    received = received + length
+
+                    max_chunk_size = tonumber(co_yield(str) or default_chunk_size)
+                    if max_chunk_size and max_chunk_size < 0 then max_chunk_size = nil end
+
+                    if not max_chunk_size then
+                        ngx_log(ngx_ERR, "Buffer size not specified, bailing")
+                        break
+                    end
+                end
+
+            until length == 0
+        end
+    end)
+end
+
+
+local function _no_body_reader()
+    return nil
+end
+
+
+local function _read_body(res)
+    local reader = res.body_reader
+
+    if not reader then
+        -- Most likely HEAD or 304 etc.
+        return nil, "no body to be read"
+    end
+
+    local chunks = {}
+    local c = 1
+
+    local chunk, err
+    repeat
+        chunk, err = reader()
+
+        if err then
+            return nil, err, tbl_concat(chunks) -- Return any data so far.
+        end
+        if chunk then
+            chunks[c] = chunk
+            c = c + 1
+        end
+    until not chunk
+
+    return tbl_concat(chunks)
+end
+
+
+local function _trailer_reader(sock)
+    return co_wrap(function()
+        co_yield(_receive_headers(sock))
+    end)
+end
+
+
+local function _read_trailers(res)
+    local reader = res.trailer_reader
+    if not reader then
+        return nil, "no trailers"
+    end
+
+    local trailers = reader()
+    setmetatable(res.headers, { __index = trailers })
+end
+
+
+local function _send_body(sock, body)
+    if type(body) == 'function' then
+        repeat
+            local chunk, err, partial = body()
+
+            if chunk then
+                local ok,err = sock:send(chunk)
+
+                if not ok then
+                    return nil, err
+                end
+            elseif err ~= nil then
+                return nil, err, partial
+            end
+
+        until chunk == nil
+    elseif body ~= nil then
+        local bytes, err = sock:send(body)
+
+        if not bytes then
+            return nil, err
+        end
+    end
+    return true, nil
+end
+
+
+local function _handle_continue(sock, body)
+    local status, version, err = _receive_status(sock)
+    if not status then
+        return nil, err
+    end
+
+    -- Only send body if we receive a 100 Continue
+    if status == 100 then
+        local ok, err = sock:receive("*l") -- Read carriage return
+        if not ok then
+            return nil, err
+        end
+        _send_body(sock, body)
+    end
+    return status, version, err
+end
+
+
+function _M.send_request(self, params)
+    -- Apply defaults
+    setmetatable(params, { __index = DEFAULT_PARAMS })
+
+    local sock = self.sock
+    local body = params.body
+    local headers = http_headers.new()
+
+    local params_headers = params.headers
+    if params_headers then
+        -- We assign one by one so that the metatable can handle case insensitivity
+        -- for us. You can blame the spec for this inefficiency.
+        for k,v in pairs(params_headers) do
+            headers[k] = v
+        end
+    end
+
+    -- Ensure minimal headers are set
+    if type(body) == 'string' and not headers["Content-Length"] then
+        headers["Content-Length"] = #body
+    end
+    if not headers["Host"] then
+        headers["Host"] = self.host
+    end
+    if not headers["User-Agent"] then
+        headers["User-Agent"] = _M._USER_AGENT
+    end
+    if params.version == 1.0 and not headers["Connection"] then
+        headers["Connection"] = "Keep-Alive"
+    end
+
+    params.headers = headers
+
+    -- Format and send request
+    local req = _format_request(params)
+    ngx_log(ngx_DEBUG, "\n", req)
+    local bytes, err = sock:send(req)
+
+    if not bytes then
+        return nil, err
+    end
+
+    -- Send the request body, unless we expect: continue, in which case
+    -- we handle this as part of reading the response.
+    if headers["Expect"] ~= "100-continue" then
+        local ok, err, partial = _send_body(sock, body)
+        if not ok then
+            return nil, err, partial
+        end
+    end
+
+    return true
+end
+
+
+function _M.read_response(self, params)
+    local sock = self.sock
+
+    local status, version, err
+
+    -- If we expect: continue, we need to handle this, sending the body if allowed.
+    -- If we don't get 100 back, then status is the actual status.
+    if params.headers["Expect"] == "100-continue" then
+        local _status, _version, _err = _handle_continue(sock, params.body)
+        if not _status then
+            return nil, _err
+        elseif _status ~= 100 then
+            status, version, err = _status, _version, _err
+        end
+    end
+
+    -- Just read the status as normal.
+    if not status then
+        status, version, err = _receive_status(sock)
+        if not status then
+            return nil, err
+        end
+    end
+
+
+    local res_headers, err = _receive_headers(sock)
+    if not res_headers then
+        return nil, err
+    end
+
+    -- Determine if we should keepalive or not.
+    local ok, connection = pcall(str_lower, res_headers["Connection"])
+    if ok then
+        if  (version == 1.1 and connection == "close") or
+            (version == 1.0 and connection ~= "keep-alive") then
+            self.keepalive = false
+        end
+    end
+
+    local body_reader = _no_body_reader
+    local trailer_reader, err = nil, nil
+    local has_body = false
+
+    -- Receive the body_reader
+    if _should_receive_body(params.method, status) then
+        local ok, encoding = pcall(str_lower, res_headers["Transfer-Encoding"])
+        if ok and version == 1.1 and encoding == "chunked" then
+            body_reader, err = _chunked_body_reader(sock)
+            has_body = true
+        else
+
+            local ok, length = pcall(tonumber, res_headers["Content-Length"])
+            if ok then
+                body_reader, err = _body_reader(sock, length)
+                has_body = true
+            end
+        end
+    end
+
+    if res_headers["Trailer"] then
+        trailer_reader, err = _trailer_reader(sock)
+    end
+
+    if err then
+        return nil, err
+    else
+        return {
+            status = status,
+            headers = res_headers,
+            has_body = has_body,
+            body_reader = body_reader,
+            read_body = _read_body,
+            trailer_reader = trailer_reader,
+            read_trailers = _read_trailers,
+        }
+    end
+end
+
+
+function _M.request(self, params)
+    local res, err = self:send_request(params)
+    if not res then
+        return res, err
+    else
+        return self:read_response(params)
+    end
+end
+
+
+function _M.request_pipeline(self, requests)
+    for i, params in ipairs(requests) do
+        if params.headers and params.headers["Expect"] == "100-continue" then
+            return nil, "Cannot pipeline request specifying Expect: 100-continue"
+        end
+
+        local res, err = self:send_request(params)
+        if not res then
+            return res, err
+        end
+    end
+
+    local responses = {}
+    for i, params in ipairs(requests) do
+        responses[i] = setmetatable({
+            params = params,
+            response_read = false,
+        }, {
+            -- Read each actual response lazily, at the point the user tries
+            -- to access any of the fields.
+            __index = function(t, k)
+                local res, err
+                if t.response_read == false then
+                    res, err = _M.read_response(self, t.params)
+                    t.response_read = true
+
+                    if not res then
+                        ngx_log(ngx_ERR, err)
+                    else
+                        for rk, rv in pairs(res) do
+                            t[rk] = rv
+                        end
+                    end
+                end
+                return rawget(t, k)
+            end,
+        })
+    end
+    return responses
+end
+
+
+function _M.request_uri(self, uri, params)
+    if not params then params = {} end
+
+    local parsed_uri, err = self:parse_uri(uri)
+    if not parsed_uri then
+        return nil, err
+    end
+
+    local scheme, host, port, path = unpack(parsed_uri)
+    if not params.path then params.path = path end
+
+    local c, err = self:connect(host, port)
+    if not c then
+        return nil, err
+    end
+
+    if scheme == "https" then
+        local verify = true
+        if params.ssl_verify == false then
+            verify = false
+        end
+        local ok, err = self:ssl_handshake(nil, host, verify)
+        if not ok then
+            return nil, err
+        end
+    end
+
+    local res, err = self:request(params)
+    if not res then
+        return nil, err
+    end
+
+    local body, err = res:read_body()
+    if not body then
+        return nil, err
+    end
+
+    res.body = body
+
+    local ok, err = self:set_keepalive()
+    if not ok then
+        ngx_log(ngx_ERR, err)
+    end
+
+    return res, nil
+end
+
+
+function _M.get_client_body_reader(self, chunksize, sock)
+    local chunksize = chunksize or 65536
+    if not sock then
+        local ok, err
+        ok, sock, err = pcall(ngx_req_socket)
+
+        if not ok then
+            return nil, sock -- pcall err
+        end
+
+        if not sock then
+            if err == "no body" then
+                return nil
+            else
+                return nil, err
+            end
+        end
+    end
+
+    local headers = ngx_req_get_headers()
+    local length = headers.content_length
+    local encoding = headers.transfer_encoding
+    if length then
+        return _body_reader(sock, tonumber(length), chunksize)
+    elseif encoding and str_lower(encoding) == 'chunked' then
+        -- Not yet supported by ngx_lua but should just work...
+        return _chunked_body_reader(sock, chunksize)
+    else
+       return nil
+    end
+end
+
+
+function _M.proxy_request(self, chunksize)
+    return self:request{
+        method = ngx_req_get_method(),
+        path = ngx_re_gsub(ngx_var.uri, "\\s", "%20", "jo") .. ngx_var.is_args .. (ngx_var.query_string or ""),
+        body = self:get_client_body_reader(chunksize),
+        headers = ngx_req_get_headers(),
+    }
+end
+
+
+function _M.proxy_response(self, response, chunksize)
+    if not response then
+        ngx_log(ngx_ERR, "no response provided")
+        return
+    end
+
+    ngx.status = response.status
+
+    -- Filter out hop-by-hop headeres
+    for k,v in pairs(response.headers) do
+        if not HOP_BY_HOP_HEADERS[str_lower(k)] then
+            ngx.header[k] = v
+        end
+    end
+
+    local reader = response.body_reader
+    repeat
+        local chunk, err = reader(chunksize)
+        if err then
+            ngx_log(ngx_ERR, err)
+            break
+        end
+
+        if chunk then
+            ngx.print(chunk)
+        end
+    until not chunk
+end
+
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-http/lib/resty/http_headers.lua

@@ -0,0 +1,62 @@
+local   rawget, rawset, setmetatable =
+        rawget, rawset, setmetatable
+
+local str_gsub = string.gsub
+local str_lower = string.lower
+
+
+local _M = {
+    _VERSION = '0.01',
+}
+
+
+-- Returns an empty headers table with internalised case normalisation.
+-- Supports the same cases as in ngx_lua:
+--
+-- headers.content_length
+-- headers["content-length"]
+-- headers["Content-Length"]
+function _M.new(self)
+    local mt = { 
+        normalised = {},
+    }
+
+
+    mt.__index = function(t, k)
+        local k_hyphened = str_gsub(k, "_", "-")
+        local matched = rawget(t, k)
+        if matched then
+            return matched
+        else
+            local k_normalised = str_lower(k_hyphened)
+            return rawget(t, mt.normalised[k_normalised])
+        end
+    end
+
+
+    -- First check the normalised table. If there's no match (first time) add an entry for
+    -- our current case in the normalised table. This is to preserve the human (prettier) case
+    -- instead of outputting lowercased header names.
+    --
+    -- If there's a match, we're being updated, just with a different case for the key. We use
+    -- the normalised table to give us the original key, and perorm a rawset().
+    mt.__newindex = function(t, k, v)
+        -- we support underscore syntax, so always hyphenate.
+        local k_hyphened = str_gsub(k, "_", "-")
+
+        -- lowercase hyphenated is "normalised"
+        local k_normalised = str_lower(k_hyphened)
+
+        if not mt.normalised[k_normalised] then
+            mt.normalised[k_normalised] = k_hyphened
+            rawset(t, k_hyphened, v)
+        else
+            rawset(t, mt.normalised[k_normalised], v)
+        end
+    end
+
+    return setmetatable({}, mt)
+end
+
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-http/lua-resty-http-0.06-0.rockspec

@@ -0,0 +1,33 @@
+package = "lua-resty-http"
+version = "0.06-0"
+source = {
+  url = "git://github.com/pintsized/lua-resty-http",
+  tag = "v0.06"
+}
+description = {
+  summary = "Lua HTTP client cosocket driver for OpenResty / ngx_lua.",
+  detailed = [[
+    Features an HTTP 1.0 and 1.1 streaming interface to reading 
+    bodies using coroutines, for predictable memory usage in Lua 
+    land. Alternative simple interface for singleshot requests 
+    without manual connection step. Supports chunked transfer 
+    encoding, keepalive, pipelining, and trailers. Headers are 
+    treated case insensitively. Probably production ready in most
+    cases, though not yet proven in the wild.
+    Recommended by the OpenResty maintainer as a long-term 
+    replacement for internal requests through ngx.location.capture.
+  ]],
+  homepage = "https://github.com/pintsized/lua-resty-http",
+  license = "2-clause BSD",
+  maintainer = "James Hurst <james@pintsized.co.uk>"
+}
+dependencies = {
+  "lua >= 5.1",
+}
+build = {
+  type = "builtin",
+  modules = {
+    ["resty.http"] = "lib/resty/http.lua",
+    ["resty.http_headers"] = "lib/resty/http_headers.lua"
+  }
+}

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/01-basic.t

@@ -0,0 +1,231 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4) + 1;
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    error_log logs/error.log debug;
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: Simple default get.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b"
+            }
+
+            ngx.status = res.status
+            ngx.print(res:read_body())
+            
+            httpc:close()
+        ';
+    }
+    location = /b {
+        echo "OK";
+    }
+--- request
+GET /a
+--- response_body
+OK
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: HTTP 1.0
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                version = 1.0,
+                path = "/b"
+            }
+
+            ngx.status = res.status
+            ngx.print(res:read_body())
+            
+            httpc:close()
+        ';
+    }
+    location = /b {
+        echo "OK";
+    }
+--- request
+GET /a
+--- response_body
+OK
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 3: Status code
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                path = "/b"
+            }
+
+            ngx.status = res.status
+            ngx.print(res:read_body())
+            
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.status = 404
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+OK
+--- error_code: 404
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 4: Response headers
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                path = "/b"
+            }
+
+            ngx.status = res.status
+            ngx.say(res.headers["X-Test"])
+            
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.header["X-Test"] = "x-value"
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+x-value
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 5: Query
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                query = {
+                    a = 1,
+                    b = 2,
+                },
+                path = "/b"
+            }
+
+            ngx.status = res.status
+
+            for k,v in pairs(res.headers) do
+                ngx.header[k] = v
+            end
+
+            ngx.print(res:read_body())
+            
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            for k,v in pairs(ngx.req.get_uri_args()) do
+                ngx.header["X-Header-" .. string.upper(k)] = v
+            end
+        ';
+    }
+--- request
+GET /a
+--- response_headers
+X-Header-A: 1
+X-Header-B: 2
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 7: HEAD has no body.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                method = "HEAD",
+                path = "/b"
+            }
+
+            local body = res:read_body()
+
+            if body then
+                ngx.print(body)
+            end
+            httpc:close()
+        ';
+    }
+    location = /b {
+        echo "OK";
+    }
+--- request
+GET /a
+--- response_body
+--- no_error_log
+[error]
+[warn]
+

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/02-chunked.t

@@ -0,0 +1,158 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: Non chunked.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                path = "/b"
+            }
+
+            local body = res:read_body()
+
+            ngx.say(#body)
+            httpc:close()
+        ';
+    }
+    location = /b {
+        chunked_transfer_encoding off;
+        content_by_lua '
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+32768
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: Chunked. The number of chunks received when no max size is given proves the response was in fact chunked.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                path = "/b"
+            }
+
+            local chunks = {}
+            local c = 1
+            repeat
+                local chunk, err = res.body_reader()
+                if chunk then
+                    chunks[c] = chunk
+                    c = c + 1
+                end
+            until not chunk
+
+            local body = table.concat(chunks)
+
+            ngx.say(#body)
+            ngx.say(#chunks)
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+65536
+2
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 3: Chunked using read_body method.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                path = "/b"
+            }
+
+            local body = res:read_body()
+
+            ngx.say(#body)
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+65536
+--- no_error_log
+[error]
+[warn]

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/03-requestbody.t

@@ -0,0 +1,185 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: POST form-urlencoded
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                body = "a=1&b=2&c=3",
+                path = "/b",
+                headers = {
+                    ["Content-Type"] = "application/x-www-form-urlencoded",
+                }
+            }
+
+            ngx.say(res:read_body())
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.req.read_body()
+            local args = ngx.req.get_post_args()
+            ngx.say("a: ", args.a)
+            ngx.say("b: ", args.b)
+            ngx.print("c: ", args.c)
+        ';
+    }
+--- request
+GET /a
+--- response_body
+a: 1
+b: 2
+c: 3
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: POST form-urlencoded 1.0
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                method = "POST",
+                body = "a=1&b=2&c=3",
+                path = "/b",
+                headers = {
+                    ["Content-Type"] = "application/x-www-form-urlencoded",
+                },
+                version = 1.0,
+            }
+
+            ngx.say(res:read_body())
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.req.read_body()
+            local args = ngx.req.get_post_args()
+            ngx.say(ngx.req.get_method())
+            ngx.say("a: ", args.a)
+            ngx.say("b: ", args.b)
+            ngx.print("c: ", args.c)
+        ';
+    }
+--- request
+GET /a
+--- response_body
+POST
+a: 1
+b: 2
+c: 3
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 3: 100 Continue does not end requset
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                body = "a=1&b=2&c=3",
+                path = "/b",
+                headers = {
+                    ["Expect"] = "100-continue",
+                    ["Content-Type"] = "application/x-www-form-urlencoded",
+                }
+            }
+            ngx.say(res.status)
+            ngx.say(res:read_body())
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.req.read_body()
+            local args = ngx.req.get_post_args()
+            ngx.say("a: ", args.a)
+            ngx.say("b: ", args.b)
+            ngx.print("c: ", args.c)
+        ';
+    }
+--- request
+GET /a
+--- response_body
+200
+a: 1
+b: 2
+c: 3
+--- no_error_log
+[error]
+[warn]
+
+=== TEST 4: Return non-100 status to user
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+                headers = {
+                    ["Expect"] = "100-continue",
+                    ["Content-Type"] = "application/x-www-form-urlencoded",
+                }
+            }
+            if not res then
+                ngx.say(err)
+            end
+            ngx.say(res.status)
+            ngx.say(res:read_body())
+            httpc:close()
+        ';
+    }
+    location = /b {
+        return 417 "Expectation Failed";
+    }
+--- request
+GET /a
+--- response_body
+417
+Expectation Failed
+--- no_error_log
+[error]
+[warn]
+

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/04-trailers.t

@@ -0,0 +1,151 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: Trailers. Check Content-MD5 generated after the body is sent matches up.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                path = "/b",
+                headers = {
+                    ["TE"] = "trailers",
+                }
+            }
+
+            local body = res:read_body()
+            local hash = ngx.md5(body)
+            res:read_trailers()
+
+            if res.headers["Content-MD5"] == hash then
+                ngx.say("OK")
+            else
+                ngx.say(res.headers["Content-MD5"])
+            end
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            -- We use the raw socket to compose a response, since OpenResty
+            -- doesnt support trailers natively.
+
+            ngx.req.read_body()
+            local sock, err = ngx.req.socket(true)
+            if not sock then
+                ngx.say(err)
+            end
+
+            local res = {}
+            table.insert(res, "HTTP/1.1 200 OK")
+            table.insert(res, "Date: " .. ngx.http_time(ngx.time()))
+            table.insert(res, "Transfer-Encoding: chunked")
+            table.insert(res, "Trailer: Content-MD5")
+            table.insert(res, "")
+
+            local body = "Hello, World"
+
+            table.insert(res, string.format("%x", #body))
+            table.insert(res, body)
+            table.insert(res, "0")
+            table.insert(res, "")
+        
+            table.insert(res, "Content-MD5: " .. ngx.md5(body))
+
+            table.insert(res, "")
+            table.insert(res, "")
+            sock:send(table.concat(res, "\\r\\n"))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+OK
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: Advertised trailer does not exist, handled gracefully.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local res, err = httpc:request{
+                path = "/b",
+                headers = {
+                    ["TE"] = "trailers",
+                }
+            }
+
+            local body = res:read_body()
+            local hash = ngx.md5(body)
+            res:read_trailers()
+
+            ngx.say("OK")
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            -- We use the raw socket to compose a response, since OpenResty
+            -- doesnt support trailers natively.
+
+            ngx.req.read_body()
+            local sock, err = ngx.req.socket(true)
+            if not sock then
+                ngx.say(err)
+            end
+
+            local res = {}
+            table.insert(res, "HTTP/1.1 200 OK")
+            table.insert(res, "Date: " .. ngx.http_time(ngx.time()))
+            table.insert(res, "Transfer-Encoding: chunked")
+            table.insert(res, "Trailer: Content-MD5")
+            table.insert(res, "")
+
+            local body = "Hello, World"
+
+            table.insert(res, string.format("%x", #body))
+            table.insert(res, body)
+            table.insert(res, "0")
+            
+            table.insert(res, "")
+            table.insert(res, "")
+            sock:send(table.concat(res, "\\r\\n"))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+OK
+--- no_error_log
+[error]
+[warn]
+
+

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/05-stream.t

@@ -0,0 +1,566 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4) - 1;
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: Chunked streaming body reader returns the right content length.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+            }
+
+            local chunks = {}
+            repeat
+                local chunk = res.body_reader()
+                if chunk then
+                    table.insert(chunks, chunk)
+                end
+            until not chunk
+
+            local body = table.concat(chunks)
+            ngx.say(#body)
+            ngx.say(res.headers["Transfer-Encoding"])
+
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+32768
+chunked
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: Non-Chunked streaming body reader returns the right content length.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+            }
+
+            local chunks = {}
+            repeat
+                local chunk = res.body_reader()
+                if chunk then
+                    table.insert(chunks, chunk)
+                end
+            until not chunk
+
+            local body = table.concat(chunks)
+            ngx.say(#body)
+            ngx.say(res.headers["Transfer-Encoding"])
+            ngx.say(#chunks)
+
+            httpc:close()
+        ';
+    }
+    location = /b {
+        chunked_transfer_encoding off;
+        content_by_lua '
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+32768
+nil
+1
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2b: Non-Chunked streaming body reader, buffer size becomes nil
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+            }
+
+            local chunks = {}
+            local buffer_size = 16384
+            repeat
+                local chunk = res.body_reader(buffer_size)
+                if chunk then
+                    table.insert(chunks, chunk)
+                end
+
+                buffer_size = nil
+            until not chunk
+
+            local body = table.concat(chunks)
+            ngx.say(res.headers["Transfer-Encoding"])
+
+            httpc:close()
+        ';
+    }
+    location = /b {
+        chunked_transfer_encoding off;
+        content_by_lua '
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+nil
+--- error_log
+Buffer size not specified, bailing
+
+
+=== TEST 3: HTTP 1.0 body reader with no max size returns the right content length.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+                version = 1.0,
+            }
+
+            local chunks = {}
+            repeat
+                local chunk = res.body_reader()
+                if chunk then
+                    table.insert(chunks, chunk)
+                end
+            until not chunk
+
+            local body = table.concat(chunks)
+            ngx.say(#body)
+            ngx.say(res.headers["Transfer-Encoding"])
+            ngx.say(#chunks)
+
+            httpc:close()
+        ';
+    }
+    location = /b {
+        chunked_transfer_encoding off;
+        content_by_lua '
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+32768
+nil
+1
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 4: HTTP 1.0 body reader with max chunk size returns the right content length.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+                version = 1.0,
+            }
+
+            local chunks = {}
+            local size = 8192
+            repeat
+                local chunk = res.body_reader(size)
+                if chunk then
+                    table.insert(chunks, chunk)
+                end
+                size = size + size
+            until not chunk
+
+            local body = table.concat(chunks)
+            ngx.say(#body)
+            ngx.say(res.headers["Transfer-Encoding"])
+            ngx.say(#chunks)
+
+            httpc:close()
+        ';
+    }
+    location = /b {
+        chunked_transfer_encoding off;
+        content_by_lua '
+            local len = 32769
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+32769
+nil
+3
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 4b: HTTP 1.0 body reader with no content length, stream works as expected.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+                version = 1.0,
+            }
+
+            local chunks = {}
+            local size = 8192
+            repeat
+                local chunk = res.body_reader(size)
+                if chunk then
+                    table.insert(chunks, chunk)
+                end
+                size = size + size
+            until not chunk
+
+            local body = table.concat(chunks)
+            ngx.say(#body)
+            ngx.say(#chunks)
+
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.req.read_body()
+            local sock, err = ngx.req.socket(true)
+            if not sock then
+                ngx.say(err)
+            end
+
+            local res = {}
+            table.insert(res, "HTTP/1.0 200 OK")
+            table.insert(res, "Date: " .. ngx.http_time(ngx.time()))
+            table.insert(res, "")
+
+            local len = 32769
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            table.insert(res, table.concat(t))
+            sock:send(table.concat(res, "\\r\\n"))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+32769
+3
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 5: Chunked streaming body reader with max chunk size returns the right content length.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+            }
+
+            local chunks = {}
+            local size = 8192
+            repeat
+                local chunk = res.body_reader(size)
+                if chunk then
+                    table.insert(chunks, chunk)
+                end
+                size = size + size
+            until not chunk
+
+            local body = table.concat(chunks)
+            ngx.say(#body)
+            ngx.say(res.headers["Transfer-Encoding"])
+            ngx.say(#chunks)
+
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            local len = 32768
+            local t = {}
+            for i=1,len do
+                t[i] = 0
+            end
+            ngx.print(table.concat(t))
+        ';
+    }
+--- request
+GET /a
+--- response_body
+32768
+chunked
+3
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 6: Request reader correctly reads body
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        lua_need_request_body off;
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+
+            local reader, err = httpc:get_client_body_reader(8192)
+
+            repeat
+                local chunk, err = reader()
+                if chunk then
+                    ngx.print(chunk)
+                end
+            until chunk == nil
+
+        ';
+    }
+
+--- request
+POST /a
+foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz
+--- response_body: foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz
+--- no_error_log
+[error]
+[warn]
+
+=== TEST 7: Request reader correctly reads body in chunks
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        lua_need_request_body off;
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+
+            local reader, err = httpc:get_client_body_reader(64)
+
+            local chunks = 0
+            repeat
+                chunks = chunks +1
+                local chunk, err = reader()
+                if chunk then
+                    ngx.print(chunk)
+                end
+            until chunk == nil
+            ngx.say("\\n"..chunks)
+        ';
+    }
+
+--- request
+POST /a
+foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz
+--- response_body
+foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz
+3
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 8: Request reader passes into client
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        lua_need_request_body off;
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local reader, err = httpc:get_client_body_reader(64)
+
+            local res, err = httpc:request{
+                method = POST,
+                path = "/b",
+                body = reader,
+                headers = ngx.req.get_headers(100, true),
+            }
+
+            local body = res:read_body()
+            ngx.say(body)
+            httpc:close()
+
+        ';
+    }
+
+    location = /b {
+        content_by_lua '
+            ngx.req.read_body()
+            local body, err = ngx.req.get_body_data()
+            ngx.print(body)
+        ';
+    }
+
+--- request
+POST /a
+foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz
+--- response_body
+foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 9: Body reader is a function returning nil when no body is present.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+                method = "HEAD",
+            }
+
+            repeat
+                local chunk = res.body_reader()
+            until not chunk
+
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.exit(200)
+        ';
+    }
+--- request
+GET /a
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 10: Issue a notice (but do not error) if trying to read the request body in a subrequest
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        echo_location /b;
+    }
+    location = /b {
+        lua_need_request_body off;
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+
+            local reader, err = httpc:get_client_body_reader(8192)
+            if not reader then
+                ngx.log(ngx.NOTICE, err)
+                return
+            end
+
+            repeat
+                local chunk, err = reader()
+                if chunk then
+                    ngx.print(chunk)
+                end
+            until chunk == nil
+        ';
+    }
+
+--- request
+POST /a
+foobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbazfoobarbaz
+--- response_body: 
+--- no_error_log
+[error]
+[warn]
+--- error_log
+attempt to read the request body in a subrequest

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/06-simpleinterface.t

@@ -0,0 +1,145 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4) + 6;
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    error_log logs/error.log debug;
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: Simple URI interface
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            local res, err = httpc:request_uri("http://127.0.0.1:"..ngx.var.server_port.."/b?a=1&b=2")
+            
+            if not res then
+                ngx.log(ngx.ERR, err)
+            end
+            ngx.status = res.status
+
+            ngx.header["X-Header-A"] = res.headers["X-Header-A"]
+            ngx.header["X-Header-B"] = res.headers["X-Header-B"]
+
+            ngx.print(res.body)
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            for k,v in pairs(ngx.req.get_uri_args()) do
+                ngx.header["X-Header-" .. string.upper(k)] = v
+            end
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_headers
+X-Header-A: 1
+X-Header-B: 2
+--- response_body
+OK
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: Simple URI interface HTTP 1.0
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            local res, err = httpc:request_uri(
+                "http://127.0.0.1:"..ngx.var.server_port.."/b?a=1&b=2", {
+                }
+            )
+            
+            ngx.status = res.status
+            
+            ngx.header["X-Header-A"] = res.headers["X-Header-A"]
+            ngx.header["X-Header-B"] = res.headers["X-Header-B"]
+
+            ngx.print(res.body)
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            for k,v in pairs(ngx.req.get_uri_args()) do
+                ngx.header["X-Header-" .. string.upper(k)] = v
+            end
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_headers
+X-Header-A: 1
+X-Header-B: 2
+--- response_body
+OK
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 3 Simple URI interface, params override
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            local res, err = httpc:request_uri(
+                "http://127.0.0.1:"..ngx.var.server_port.."/b?a=1&b=2", {
+                    path = "/c",
+                    query = {
+                        a = 2,
+                        b = 3,
+                    },
+                }
+            )
+            
+            ngx.status = res.status
+            
+            ngx.header["X-Header-A"] = res.headers["X-Header-A"]
+            ngx.header["X-Header-B"] = res.headers["X-Header-B"]
+
+            ngx.print(res.body)
+        ';
+    }
+    location = /c {
+        content_by_lua '
+            for k,v in pairs(ngx.req.get_uri_args()) do
+                ngx.header["X-Header-" .. string.upper(k)] = v
+            end
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_headers
+X-Header-A: 2
+X-Header-B: 3
+--- response_body
+OK
+--- no_error_log
+[error]
+[warn]

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/07-keepalive.t

@@ -0,0 +1,182 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    error_log logs/error.log debug;
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1 Simple interface, Connection: Keep-alive. Test the connection is reused.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            local res, err = httpc:request_uri(
+                "http://127.0.0.1:"..ngx.var.server_port.."/b", {
+                }
+            )
+
+            ngx.say(res.headers["Connection"])
+
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            ngx.say(httpc:get_reused_times())
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+keep-alive
+1
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2 Simple interface, Connection: close, test we don't try to keepalive, but also that subsequent connections can keepalive.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            local res, err = httpc:request_uri(
+                "http://127.0.0.1:"..ngx.var.server_port.."/b", {
+                    version = 1.0,
+                    headers = {
+                        ["Connection"] = "close",
+                    },
+                }
+            )
+
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            ngx.say(httpc:get_reused_times())
+            
+            httpc:set_keepalive()
+
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            ngx.say(httpc:get_reused_times())
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+0
+1
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 3 Generic interface, Connection: Keep-alive. Test the connection is reused.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b"
+            }
+
+            local body = res:read_body()
+
+            ngx.say(res.headers["Connection"])
+            ngx.say(httpc:set_keepalive())
+
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            ngx.say(httpc:get_reused_times())
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+keep-alive
+1
+1
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 4 Generic interface, Connection: Close. Test we don't try to keepalive, but also that subsequent connections can keepalive.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                version = 1.0,
+                headers = {
+                    ["Connection"] = "Close",
+                },
+                path = "/b"
+            }
+
+            local body = res:read_body()
+
+            ngx.say(res.headers["Connection"])
+            local r, e = httpc:set_keepalive()
+            ngx.say(r)
+            ngx.say(e)
+
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            ngx.say(httpc:get_reused_times())
+
+            httpc:set_keepalive()
+
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            ngx.say(httpc:get_reused_times())
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+close
+2
+connection must be closed
+0
+1
+--- no_error_log
+[error]
+[warn]

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/08-pipeline.t

@@ -0,0 +1,143 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    error_log logs/error.log debug;
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1 Test that pipelined reqests can be read correctly.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            
+            local responses = httpc:request_pipeline{
+                {
+                    path = "/b",
+                },
+                {
+                    path = "/c",
+                },
+                {
+                    path = "/d",
+                }
+            }
+
+            for i,r in ipairs(responses) do
+                if r.status then
+                    ngx.say(r.status)
+                    ngx.say(r.headers["X-Res"])
+                    ngx.say(r:read_body())
+                end
+            end
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.status = 200
+            ngx.header["X-Res"] = "B"
+            ngx.print("B")
+        ';
+    }
+    location = /c {
+        content_by_lua '
+            ngx.status = 404
+            ngx.header["X-Res"] = "C"
+            ngx.print("C")
+        ';
+    }
+    location = /d {
+        content_by_lua '
+            ngx.status = 200
+            ngx.header["X-Res"] = "D"
+            ngx.print("D")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+200
+B
+B
+404
+C
+C
+200
+D
+D
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: Test we can handle timeouts on reading the pipelined requests.
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            httpc:set_timeout(1)
+            
+            local responses = httpc:request_pipeline{
+                {
+                    path = "/b",
+                },
+                {
+                    path = "/c",
+                },
+            }
+
+            for i,r in ipairs(responses) do
+                if r.status then
+                    ngx.say(r.status)
+                    ngx.say(r.headers["X-Res"])
+                    ngx.say(r:read_body())
+                end
+            end
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.status = 200
+            ngx.header["X-Res"] = "B"
+            ngx.print("B")
+        ';
+    }
+    location = /c {
+        content_by_lua '
+            ngx.status = 404
+            ngx.header["X-Res"] = "C"
+            ngx.sleep(1)
+            ngx.print("C")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+200
+B
+B
+--- no_error_log
+[warn]
+--- error_log eval
+[qr/timeout/]

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/09-ssl.t

@@ -0,0 +1,59 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    error_log logs/error.log debug;
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: parse_uri returns port 443 for https URIs
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            local parsed = httpc:parse_uri("https://www.google.com/foobar")
+            ngx.say(parsed[3])
+        ';
+    }
+--- request
+GET /a
+--- response_body
+443
+--- no_error_log
+[error]
+[warn]
+
+=== TEST 2: parse_uri returns port 80 for http URIs
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            local parsed = httpc:parse_uri("http://www.google.com/foobar")
+            ngx.say(parsed[3])
+        ';
+    }
+--- request
+GET /a
+--- response_body
+80
+--- no_error_log
+[error]
+[warn]

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/10-clientbodyreader.t

@@ -0,0 +1,57 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: Issue a notice (but do not error) if trying to read the request body in a subrequest
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        echo_location /b;
+    }
+    location = /b {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/c",
+                headers = {
+                    ["Content-Type"] = "application/x-www-form-urlencoded",
+                }
+            }
+            if not res then
+                ngx.say(err)
+            end
+            ngx.print(res:read_body())
+            httpc:close()
+        ';
+    }
+    location /c {
+        echo "OK";
+    }
+--- request
+GET /a
+--- response_body
+OK
+--- no_error_log
+[error]
+[warn]
+

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/11-proxy.t

@@ -0,0 +1,152 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 5);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    error_log logs/error.log debug;
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: Proxy GET request and response
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a_prx {
+        rewrite ^(.*)_prx$ $1 break;
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            httpc:proxy_response(httpc:proxy_request())
+            httpc:set_keepalive()
+        ';
+    }
+    location = /a {
+        content_by_lua '
+            ngx.status = 200
+            ngx.header["X-Test"] = "foo"
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a_prx
+--- response_body
+OK
+--- response_headers
+X-Test: foo
+--- error_code: 200
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: Proxy POST request and response
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a_prx {
+        rewrite ^(.*)_prx$ $1 break;
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            httpc:proxy_response(httpc:proxy_request())
+            httpc:set_keepalive()
+        ';
+    }
+    location = /a {
+        lua_need_request_body on;
+        content_by_lua '
+            ngx.status = 404
+            ngx.header["X-Test"] = "foo"
+            local args, err = ngx.req.get_post_args()
+            ngx.say(args["foo"])
+            ngx.say(args["hello"])
+        ';
+    }
+--- request
+POST /a_prx
+foo=bar&hello=world
+--- response_body
+bar
+world
+--- response_headers
+X-Test: foo
+--- error_code: 404
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 3: Proxy multiple headers
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a_prx {
+        rewrite ^(.*)_prx$ $1 break;
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            httpc:proxy_response(httpc:proxy_request())
+            httpc:set_keepalive()
+        ';
+    }
+    location = /a {
+        content_by_lua '
+            ngx.status = 200
+            ngx.header["Set-Cookie"] = { "cookie1", "cookie2" }
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a_prx
+--- response_body
+OK
+--- raw_response_headers_like: .*Set-Cookie: cookie1\r\nSet-Cookie: cookie2\r\n
+--- error_code: 200
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 4: Proxy still works with spaces in URI
+--- http_config eval: $::HttpConfig
+--- config
+    location = "/a_ b_prx" {
+        rewrite ^(.*)_prx$ $1 break;
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+            httpc:proxy_response(httpc:proxy_request())
+            httpc:set_keepalive()
+        ';
+    }
+    location = "/a_ b" {
+        content_by_lua '
+            ngx.status = 200
+            ngx.header["X-Test"] = "foo"
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a_%20b_prx
+--- response_body
+OK
+--- response_headers
+X-Test: foo
+--- error_code: 200
+--- no_error_log
+[error]
+[warn]

controllers/nginx-third-party/lua/vendor/lua-resty-http/t/12-case_insensitive_headers.t

@@ -0,0 +1,160 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket;
+use Cwd qw(cwd);
+
+plan tests => repeat_each() * (blocks() * 4);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    error_log logs/error.log debug;
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+=== TEST 1: Test header normalisation
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http_headers = require "resty.http_headers"
+
+            local headers = http_headers.new()
+
+            headers.x_a_header = "a"
+            headers["x-b-header"] = "b"
+            headers["X-C-Header"] = "c"
+            headers["X_d-HEAder"] = "d"
+
+            ngx.say(headers["X-A-Header"])
+            ngx.say(headers.x_b_header)
+            
+            for k,v in pairs(headers) do
+                ngx.say(k, ": ", v)
+            end
+        ';
+    }
+--- request
+GET /a
+--- response_body
+a
+b
+x-b-header: b
+x-a-header: a
+X-d-HEAder: d
+X-C-Header: c
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 2: Test headers can be accessed in all cases
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b"
+            }
+
+            ngx.status = res.status
+            ngx.say(res.headers["X-Foo-Header"])
+            ngx.say(res.headers["x-fOo-heaDeR"])
+            ngx.say(res.headers.x_foo_header)
+            
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.header["X-Foo-Header"] = "bar"
+            ngx.say("OK")
+        ';
+    }
+--- request
+GET /a
+--- response_body
+bar
+bar
+bar
+--- no_error_log
+[error]
+[warn]
+
+
+=== TEST 3: Test request headers are normalised
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http = require "resty.http"
+            local httpc = http.new()
+            httpc:connect("127.0.0.1", ngx.var.server_port)
+
+            local res, err = httpc:request{
+                path = "/b",
+                headers = {
+                    ["uSeR-AgENT"] = "test_user_agent",
+                    x_foo = "bar",
+                },
+            }
+
+            ngx.status = res.status
+            ngx.print(res:read_body())
+            
+            httpc:close()
+        ';
+    }
+    location = /b {
+        content_by_lua '
+            ngx.say(ngx.req.get_headers()["User-Agent"])
+            ngx.say(ngx.req.get_headers()["X-Foo"])
+        ';
+    }
+--- request
+GET /a
+--- response_body
+test_user_agent
+bar
+--- no_error_log
+[error]
+
+
+=== TEST 4: Test that headers remain unique
+--- http_config eval: $::HttpConfig
+--- config
+    location = /a {
+        content_by_lua '
+            local http_headers = require "resty.http_headers"
+
+            local headers = http_headers.new()
+
+            headers["x-a-header"] = "a"
+            headers["X-A-HEAder"] = "b"
+
+            for k,v in pairs(headers) do
+            ngx.log(ngx.DEBUG, k, ": ", v)
+                ngx.header[k] = v
+            end
+        ';
+    }
+--- request
+GET /a
+--- response_headers
+x-a-header: b
+--- no_error_log
+[error]
+[warn]
+[warn]

controllers/nginx-third-party/lua/vendor/lua-resty-http/util/lua-releng

@@ -0,0 +1,63 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+
+sub file_contains ($$);
+
+my $version;
+for my $file (map glob, qw{ *.lua lib/*.lua lib/*/*.lua lib/*/*/*.lua lib/*/*/*/*.lua lib/*/*/*/*/*.lua }) {
+    # Check the sanity of each .lua file
+    open my $in, $file or
+        die "ERROR: Can't open $file for reading: $!\n";
+    my $found_ver;
+    while (<$in>) {
+        my ($ver, $skipping);
+        if (/(?x) (?:_VERSION) \s* = .*? ([\d\.]*\d+) (.*? SKIP)?/) {
+            my $orig_ver = $ver = $1;
+            $found_ver = 1;
+            #        $skipping = $2;
+            $ver =~ s{^(\d+)\.(\d{3})(\d{3})$}{join '.', int($1), int($2), int($3)}e;
+            warn "$file: $orig_ver ($ver)\n";
+
+        } elsif (/(?x) (?:_VERSION) \s* = \s* ([a-zA-Z_]\S*)/) {
+            warn "$file: $1\n";
+            $found_ver = 1;
+            last;
+        }
+
+        if ($ver and $version and !$skipping) {
+            if ($version ne $ver) {
+                #    die "$file: $ver != $version\n";
+            }
+        } elsif ($ver and !$version) {
+            $version = $ver;
+        }
+    }
+    if (!$found_ver) {
+        warn "WARNING: No \"_VERSION\" or \"version\" field found in `$file`.\n";
+    }
+    close $in;
+
+    print "Checking use of Lua global variables in file $file ...\n";
+    system("luac -p -l $file | grep ETGLOBAL | grep -vE 'require|type|tostring|error|ngx|ndk|jit|setmetatable|getmetatable|string|table|io|os|print|tonumber|math|pcall|xpcall|unpack|pairs|ipairs|assert|module|package|coroutine|[gs]etfenv|next|select|rawset|rawget|debug'");
+    #file_contains($file, "attempt to write to undeclared variable");
+    system("grep -H -n -E --color '.{120}' $file");
+}
+
+sub file_contains ($$) {
+    my ($file, $regex) = @_;
+    open my $in, $file
+        or die "Cannot open $file fo reading: $!\n";
+    my $content = do { local $/; <$in> };
+    close $in;
+    #print "$content";
+    return scalar ($content =~ /$regex/);
+}
+
+if (-d 't') {
+    for my $file (map glob, qw{ t/*.t t/*/*.t t/*/*/*.t }) {
+        system(qq{grep -H -n --color -E '\\--- ?(ONLY|LAST)' $file});
+    }
+}
+

controllers/nginx-third-party/lua/vendor/lua-resty-lock/.gitignore

@@ -0,0 +1,10 @@
+*.swp
+*.swo
+*~
+go
+t/servroot/
+reindex
+nginx
+ctags
+tags
+a.lua

controllers/nginx-third-party/lua/vendor/lua-resty-lock/Makefile

@@ -0,0 +1,18 @@
+OPENRESTY_PREFIX=/usr/local/openresty
+
+PREFIX ?=          /usr/local
+LUA_INCLUDE_DIR ?= $(PREFIX)/include
+LUA_LIB_DIR ?=     $(PREFIX)/lib/lua/$(LUA_VERSION)
+INSTALL ?= install
+
+.PHONY: all test install
+
+all: ;
+
+install: all
+	$(INSTALL) -d $(DESTDIR)/$(LUA_LIB_DIR)/resty/
+	$(INSTALL) lib/resty/*.lua $(DESTDIR)/$(LUA_LIB_DIR)/resty/
+
+test: all
+	PATH=$(OPENRESTY_PREFIX)/nginx/sbin:$$PATH prove -I../test-nginx/lib -r t
+

controllers/nginx-third-party/lua/vendor/lua-resty-lock/README.markdown

@@ -0,0 +1,376 @@
+Name
+====
+
+lua-resty-lock - Simple shm-based nonblocking lock API
+
+Table of Contents
+=================
+
+* [Name](#name)
+* [Status](#status)
+* [Synopsis](#synopsis)
+* [Description](#description)
+* [Methods](#methods)
+    * [new](#new)
+    * [lock](#lock)
+    * [unlock](#unlock)
+* [For Multiple Lua Light Threads](#for-multiple-lua-light-threads)
+* [For Cache Locks](#for-cache-locks)
+* [Prerequisites](#prerequisites)
+* [Installation](#installation)
+* [TODO](#todo)
+* [Community](#community)
+    * [English Mailing List](#english-mailing-list)
+    * [Chinese Mailing List](#chinese-mailing-list)
+* [Bugs and Patches](#bugs-and-patches)
+* [Author](#author)
+* [Copyright and License](#copyright-and-license)
+* [See Also](#see-also)
+
+Status
+======
+
+This library is still under early development and is production ready.
+
+Synopsis
+========
+
+```lua
+# nginx.conf
+
+http {
+    # you do not need the following line if you are using the
+    #   ngx_openresty bundle:
+    lua_package_path "/path/to/lua-resty-lock/lib/?.lua;;";
+
+    lua_shared_dict my_locks 100k;
+
+    server {
+        ...
+
+        location = /t {
+            content_by_lua '
+                local lock = require "resty.lock"
+                for i = 1, 2 do
+                    local lock = lock:new("my_locks")
+
+                    local elapsed, err = lock:lock("my_key")
+                    ngx.say("lock: ", elapsed, ", ", err)
+
+                    local ok, err = lock:unlock()
+                    if not ok then
+                        ngx.say("failed to unlock: ", err)
+                    end
+                    ngx.say("unlock: ", ok)
+                end
+            ';
+        }
+    }
+}
+```
+
+Description
+===========
+
+This library implements a simple mutex lock in a similar way to ngx_proxy module's [proxy_cache_lock directive](http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cache_lock).
+
+Under the hood, this library uses [ngx_lua](https://github.com/chaoslawful/lua-nginx-module) module's shared memory dictionaries. The lock waiting is nonblocking because we use stepwise [ngx.sleep](https://github.com/chaoslawful/lua-nginx-module#ngxsleep) to poll the lock periodically.
+
+[Back to TOC](#table-of-contents)
+
+Methods
+=======
+
+To load this library,
+
+1. you need to specify this library's path in ngx_lua's [lua_package_path](https://github.com/chaoslawful/lua-nginx-module#lua_package_path) directive. For example, `lua_package_path "/path/to/lua-resty-lock/lib/?.lua;;";`.
+2. you use `require` to load the library into a local Lua variable:
+
+```lua
+    local lock = require "resty.lock"
+```
+
+[Back to TOC](#table-of-contents)
+
+new
+---
+`syntax: obj = lock:new(dict_name)`
+
+`syntax: obj = lock:new(dict_name, opts)`
+
+Creates a new lock object instance by specifying the shared dictionary name (created by [lua_shared_dict](http://https://github.com/chaoslawful/lua-nginx-module#lua_shared_dict)) and an optional options table `opts`.
+
+The options table accepts the following options:
+
+* `exptime`
+Specifies expiration time (in seconds) for the lock entry in the shared memory dictionary. You can specify up to `0.001` seconds. Default to 30 (seconds). Even if the invoker does not call `unlock` or the object holding the lock is not GC'd, the lock will be released after this time. So deadlock won't happen even when the worker process holding the lock crashes.
+* `timeout`
+Specifies the maximal waiting time (in seconds) for the [lock](#lock) method calls on the current object instance. You can specify up to `0.001` seconds. Default to 5 (seconds). This option value cannot be bigger than `exptime`. This timeout is to prevent a [lock](#lock) method call from waiting forever.
+You can specify `0` to make the [lock](#lock) method return immediately without waiting if it cannot acquire the lock right away.
+* `step`
+Specifies the initial step (in seconds) of sleeping when waiting for the lock. Default to `0.001` (seconds). When the [lock](#lock) method is waiting on a busy lock, it sleeps by steps. The step size is increased by a ratio (specified by the `ratio` option) until reaching the step size limit (specified by the `max_step` option).
+* `ratio`
+Specifies the step increasing ratio. Default to 2, that is, the step size doubles at each waiting iteration.
+* `max_step`
+Specifies the maximal step size (i.e., sleep interval, in seconds) allowed. See also the `step` and `ratio` options). Default to 0.5 (seconds).
+
+[Back to TOC](#table-of-contents)
+
+lock
+----
+`syntax: elapsed, err = obj:lock(key)`
+
+Tries to lock a key across all the Nginx worker processes in the current Nginx server instance. Different keys are different locks.
+
+The length of the key string must not be larger than 65535 bytes.
+
+Returns the waiting time (in seconds) if the lock is successfully acquired. Otherwise returns `nil` and a string describing the error.
+
+The waiting time is not from the wallclock, but rather is from simply adding up all the waiting "steps". A nonzero `elapsed` return value indicates that someone else has just hold this lock. But a zero return value cannot gurantee that no one else has just acquired and released the lock.
+
+When this method is waiting on fetching the lock, no operating system threads will be blocked and the current Lua "light thread" will be automatically yielded behind the scene.
+
+It is strongly recommended to always call the [unlock()](#unlock) method to actively release the lock as soon as possible.
+
+If the [unlock()](#unlock) method is never called after this method call, the lock will get released when
+1. the current `resty.lock` object instance is collected automatically by the Lua GC.
+2. the `exptime` for the lock entry is reached.
+
+Common errors for this method call is
+* "timeout"
+: The timeout threshold specified by the `timeout` option of the [new](#new) method is exceeded.
+* "locked"
+: The current `resty.lock` object instance is already holding a lock (not necessarily of the same key).
+
+Other possible errors are from ngx_lua's shared dictionary API.
+
+[Back to TOC](#table-of-contents)
+
+unlock
+------
+`syntax: ok, err = obj:unlock()`
+
+Releases the lock held by the current `resty.lock` object instance.
+
+Returns `1` on success. Returns `nil` and a string describing the error otherwise.
+
+If you call `unlock` when no lock is currently held, the error "unlocked" will be returned.
+
+[Back to TOC](#table-of-contents)
+
+For Multiple Lua Light Threads
+==============================
+
+It is always a bad idea to share a single `resty.lock` object instance across multiple ngx_lua "light threads" because the object itself is stateful and is vulnerable to race conditions. It is highly recommended to always allocate a separate `resty.lock` object instance for each "light thread" that needs one.
+
+[Back to TOC](#table-of-contents)
+
+For Cache Locks
+===============
+
+One common use case for this library is avoid the so-called "dog-pile effect", that is, to limit concurrent backend queries for the same key when a cache miss happens. This usage is similar to the standard ngx_proxy module's [proxy_cache_lock](http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cache_lock) directive.
+
+The basic workflow for a cache lock is as follows:
+
+1. Check the cache for a hit with the key. If a cache miss happens, proceed to step 2.
+2. Instantiate a `resty.lock` object, call the [lock](#lock) method on the key, and check the 1st return value, i.e., the lock waiting time. If it is `nil`, handle the error; otherwise proceed to step 3.
+3. Check the cache again for a hit. If it is still a miss, proceed to step 4; otherwise release the lock by calling [unlock](#unlock) and then return the cached value.
+4. Query the backend (the data source) for the value, put the result into the cache, and then release the lock currently held by calling [unlock](#unlock).
+
+Below is a kinda complete code example that demonstrates the idea.
+
+```lua
+    local resty_lock = require "resty.lock"
+    local cache = ngx.shared.my_cache
+
+    -- step 1:
+    local val, err = cache:get(key)
+    if val then
+        ngx.say("result: ", val)
+        return
+    end
+
+    if err then
+        return fail("failed to get key from shm: ", err)
+    end
+
+    -- cache miss!
+    -- step 2:
+    local lock = resty_lock:new("my_locks")
+    local elapsed, err = lock:lock(key)
+    if not elapsed then
+        return fail("failed to acquire the lock: ", err)
+    end
+
+    -- lock successfully acquired!
+
+    -- step 3:
+    -- someone might have already put the value into the cache
+    -- so we check it here again:
+    val, err = cache:get(key)
+    if val then
+        local ok, err = lock:unlock()
+        if not ok then
+            return fail("failed to unlock: ", err)
+        end
+
+        ngx.say("result: ", val)
+        return
+    end
+
+    --- step 4:
+    local val = fetch_redis(key)
+    if not val then
+        local ok, err = lock:unlock()
+        if not ok then
+            return fail("failed to unlock: ", err)
+        end
+
+        -- FIXME: we should handle the backend miss more carefully
+        -- here, like inserting a stub value into the cache.
+
+        ngx.say("no value found")
+        return
+    end
+
+    -- update the shm cache with the newly fetched value
+    local ok, err = cache:set(key, val, 1)
+    if not ok then
+        local ok, err = lock:unlock()
+        if not ok then
+            return fail("failed to unlock: ", err)
+        end
+
+        return fail("failed to update shm cache: ", err)
+    end
+
+    local ok, err = lock:unlock()
+    if not ok then
+        return fail("failed to unlock: ", err)
+    end
+
+    ngx.say("result: ", val)
+```
+
+Here we assume that we use the ngx_lua shared memory dictionary to cache the Redis query results and we have the following configurations in `nginx.conf`:
+
+```nginx
+    # you may want to change the dictionary size for your cases.
+    lua_shared_dict my_cache 10m;
+    lua_shared_dict my_locks 1m;
+```
+
+The `my_cache` dictionary is for the data cache while the `my_locks` dictionary is for `resty.lock` itself.
+
+Several important things to note in the example above:
+
+1. You need to release the lock as soon as possible, even when some other unrelated errors happen.
+2. You need to update the cache with the result got from the backend *before* releasing the lock so other threads already waiting on the lock can get cached value when they get the lock afterwards.
+3. When the backend returns no value at all, we should handle the case carefully by inserting some stub value into the cache.
+
+[Back to TOC](#table-of-contents)
+
+Prerequisites
+=============
+
+* [LuaJIT](http://luajit.org) 2.0+
+* [ngx_lua](https://github.com/chaoslawful/lua-nginx-module) 0.8.10+
+
+[Back to TOC](#table-of-contents)
+
+Installation
+============
+
+It is recommended to use the latest [ngx_openresty bundle](http://openresty.org) directly where this library
+is bundled and enabled by default. At least ngx_openresty 1.4.2.9 is required. And you need to enable LuaJIT when building your ngx_openresty
+bundle by passing the `--with-luajit` option to its `./configure` script. No extra Nginx configuration is required.
+
+If you want to use this library with your own Nginx build (with ngx_lua), then you need to
+ensure you are using at least ngx_lua 0.8.10. Also, You need to configure
+the [lua_package_path](https://github.com/chaoslawful/lua-nginx-module#lua_package_path) directive to
+add the path of your lua-resty-lock source tree to ngx_lua's Lua module search path, as in
+
+```nginx
+    # nginx.conf
+    http {
+        lua_package_path "/path/to/lua-resty-lock/lib/?.lua;;";
+        ...
+    }
+```
+
+and then load the library in Lua:
+
+```lua
+    local lock = require "resty.lock"
+```
+
+[Back to TOC](#table-of-contents)
+
+TODO
+====
+
+* We should simplify the current implementation when LuaJIT 2.1 gets support for `__gc` metamethod on normal Lua tables. Right now we are using an FFI cdata and a ref/unref memo table to work around this, which is rather ugly and a bit inefficient.
+
+[Back to TOC](#table-of-contents)
+
+Community
+=========
+
+[Back to TOC](#table-of-contents)
+
+English Mailing List
+--------------------
+
+The [openresty-en](https://groups.google.com/group/openresty-en) mailing list is for English speakers.
+
+[Back to TOC](#table-of-contents)
+
+Chinese Mailing List
+--------------------
+
+The [openresty](https://groups.google.com/group/openresty) mailing list is for Chinese speakers.
+
+[Back to TOC](#table-of-contents)
+
+Bugs and Patches
+================
+
+Please report bugs or submit patches by
+
+1. creating a ticket on the [GitHub Issue Tracker](http://github.com/openresty/lua-resty-lock/issues),
+1. or posting to the [OpenResty community](#community).
+
+[Back to TOC](#table-of-contents)
+
+Author
+======
+
+Yichun "agentzh" Zhang (章亦春) <agentzh@gmail.com>, CloudFlare Inc.
+
+[Back to TOC](#table-of-contents)
+
+Copyright and License
+=====================
+
+This module is licensed under the BSD license.
+
+Copyright (C) 2013-2014, by Yichun "agentzh" Zhang, CloudFlare Inc.
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+[Back to TOC](#table-of-contents)
+
+See Also
+========
+* the ngx_lua module: https://github.com/chaoslawful/lua-nginx-module
+* OpenResty: http://openresty.org
+[Back to TOC](#table-of-contents)
+

controllers/nginx-third-party/lua/vendor/lua-resty-lock/lib/resty/lock.lua

@@ -0,0 +1,208 @@
+-- Copyright (C) Yichun Zhang (agentzh)
+
+
+local ffi = require "ffi"
+local ffi_new = ffi.new
+local shared = ngx.shared
+local sleep = ngx.sleep
+local shdict_mt
+local debug = ngx.config.debug
+local setmetatable = setmetatable
+local getmetatable = getmetatable
+local tonumber = tonumber
+
+
+local _M = { _VERSION = '0.04' }
+local mt = { __index = _M }
+
+
+local FREE_LIST_REF = 0
+
+-- FIXME: we don't need this when we have __gc metamethod support on Lua
+--        tables.
+local memo = {}
+if debug then _M.memo = memo end
+
+
+local function ref_obj(key)
+    if key == nil then
+        return -1
+    end
+    local ref = memo[FREE_LIST_REF]
+    if ref and ref ~= 0 then
+         memo[FREE_LIST_REF] = memo[ref]
+
+    else
+        ref = #memo + 1
+    end
+    memo[ref] = key
+
+    -- print("ref key_id returned ", ref)
+    return ref
+end
+if debug then _M.ref_obj = ref_obj end
+
+
+local function unref_obj(ref)
+    if ref >= 0 then
+        memo[ref] = memo[FREE_LIST_REF]
+        memo[FREE_LIST_REF] = ref
+    end
+end
+if debug then _M.unref_obj = unref_obj end
+
+
+local function gc_lock(cdata)
+    local dict_id = tonumber(cdata.dict_id)
+    local key_id = tonumber(cdata.key_id)
+
+    -- print("key_id: ", key_id, ", key: ", memo[key_id], "dict: ",
+    --       type(memo[cdata.dict_id]))
+    if key_id > 0 then
+        local key = memo[key_id]
+        unref_obj(key_id)
+        local dict = memo[dict_id]
+        -- print("dict.delete type: ", type(dict.delete))
+        local ok, err = dict:delete(key)
+        if not ok then
+            ngx.log(ngx.ERR, 'failed to delete key "', key, '": ', err)
+        end
+        cdata.key_id = 0
+    end
+
+    unref_obj(dict_id)
+end
+
+
+local ctype = ffi.metatype("struct { int key_id; int dict_id; }",
+                           { __gc = gc_lock })
+
+
+function _M.new(_, dict_name, opts)
+    local dict = shared[dict_name]
+    if not dict then
+        return nil, "dictionary not found"
+    end
+    local cdata = ffi_new(ctype)
+    cdata.key_id = 0
+    cdata.dict_id = ref_obj(dict)
+
+    local timeout, exptime, step, ratio, max_step
+    if opts then
+        timeout = opts.timeout
+        exptime = opts.exptime
+        step = opts.step
+        ratio = opts.ratio
+        max_step = opts.max_step
+    end
+
+    if not exptime then
+        exptime = 30
+    end
+
+    if timeout and timeout > exptime then
+        timeout = exptime
+    end
+
+    local self = {
+        cdata = cdata,
+        dict = dict,
+        timeout = timeout or 5,
+        exptime = exptime,
+        step = step or 0.001,
+        ratio = ratio or 2,
+        max_step = max_step or 0.5,
+    }
+    return setmetatable(self, mt)
+end
+
+
+function _M.lock(self, key)
+    if not key then
+        return nil, "nil key"
+    end
+
+    local dict = self.dict
+    local cdata = self.cdata
+    if cdata.key_id > 0 then
+        return nil, "locked"
+    end
+    local exptime = self.exptime
+    local ok, err = dict:add(key, true, exptime)
+    if ok then
+        cdata.key_id = ref_obj(key)
+        if not shdict_mt then
+            shdict_mt = getmetatable(dict)
+        end
+        return 0
+    end
+    if err ~= "exists" then
+        return nil, err
+    end
+    -- lock held by others
+    local step = self.step
+    local ratio = self.ratio
+    local timeout = self.timeout
+    local max_step = self.max_step
+    local elapsed = 0
+    while timeout > 0 do
+        if step > timeout then
+            step = timeout
+        end
+
+        sleep(step)
+        elapsed = elapsed + step
+        timeout = timeout - step
+
+        local ok, err = dict:add(key, true, exptime)
+        if ok then
+            cdata.key_id = ref_obj(key)
+            if not shdict_mt then
+                shdict_mt = getmetatable(dict)
+            end
+            return elapsed
+        end
+
+        if err ~= "exists" then
+            return nil, err
+        end
+
+        if timeout <= 0 then
+            break
+        end
+
+        step = step * ratio
+        if step <= 0 then
+            step = 0.001
+        end
+        if step > max_step then
+            step = max_step
+        end
+    end
+
+    return nil, "timeout"
+end
+
+
+function _M.unlock(self)
+    local dict = self.dict
+    local cdata = self.cdata
+    local key_id = tonumber(cdata.key_id)
+    if key_id <= 0 then
+        return nil, "unlocked"
+    end
+
+    local key = memo[key_id]
+    unref_obj(key_id)
+
+    local ok, err = dict:delete(key)
+    if not ok then
+        return nil, err
+    end
+    cdata.key_id = 0
+
+    return 1
+end
+
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-lock/t/sanity.t

@@ -0,0 +1,470 @@
+# vim:set ft= ts=4 sw=4 et:
+
+use Test::Nginx::Socket::Lua;
+use Cwd qw(cwd);
+
+repeat_each(2);
+
+plan tests => repeat_each() * (blocks() * 3);
+
+my $pwd = cwd();
+
+our $HttpConfig = qq{
+    lua_package_path "$pwd/lib/?.lua;;";
+    lua_package_cpath "/usr/local/openresty-debug/lualib/?.so;/usr/local/openresty/lualib/?.so;;";
+    lua_shared_dict cache_locks 100k;
+};
+
+$ENV{TEST_NGINX_RESOLVER} = '8.8.8.8';
+$ENV{TEST_NGINX_REDIS_PORT} ||= 6379;
+
+no_long_string();
+#no_diff();
+
+run_tests();
+
+__DATA__
+
+=== TEST 1: lock is subject to garbage collection
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lock = require "resty.lock"
+            for i = 1, 2 do
+                collectgarbage("collect")
+                local lock = lock:new("cache_locks")
+                local elapsed, err = lock:lock("foo")
+                ngx.say("lock: ", elapsed, ", ", err)
+            end
+            collectgarbage("collect")
+        ';
+    }
+--- request
+GET /t
+--- response_body
+lock: 0, nil
+lock: 0, nil
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 2: serial lock and unlock
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lock = require "resty.lock"
+            for i = 1, 2 do
+                local lock = lock:new("cache_locks")
+                local elapsed, err = lock:lock("foo")
+                ngx.say("lock: ", elapsed, ", ", err)
+                local ok, err = lock:unlock()
+                if not ok then
+                    ngx.say("failed to unlock: ", err)
+                end
+                ngx.say("unlock: ", ok)
+            end
+        ';
+    }
+--- request
+GET /t
+--- response_body
+lock: 0, nil
+unlock: 1
+lock: 0, nil
+unlock: 1
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 3: timed out locks
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lock = require "resty.lock"
+            for i = 1, 2 do
+                local lock1 = lock:new("cache_locks", { timeout = 0.01 })
+                local lock2 = lock:new("cache_locks", { timeout = 0.01 })
+
+                local elapsed, err = lock1:lock("foo")
+                ngx.say("lock 1: lock: ", elapsed, ", ", err)
+
+                local elapsed, err = lock2:lock("foo")
+                ngx.say("lock 2: lock: ", elapsed, ", ", err)
+
+                local ok, err = lock1:unlock()
+                ngx.say("lock 1: unlock: ", ok, ", ", err)
+
+                local ok, err = lock2:unlock()
+                ngx.say("lock 2: unlock: ", ok, ", ", err)
+            end
+        ';
+    }
+--- request
+GET /t
+--- response_body
+lock 1: lock: 0, nil
+lock 2: lock: nil, timeout
+lock 1: unlock: 1, nil
+lock 2: unlock: nil, unlocked
+lock 1: lock: 0, nil
+lock 2: lock: nil, timeout
+lock 1: unlock: 1, nil
+lock 2: unlock: nil, unlocked
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 4: waited locks
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local resty_lock = require "resty.lock"
+            local key = "blah"
+            local t, err = ngx.thread.spawn(function ()
+                local lock = resty_lock:new("cache_locks")
+                local elapsed, err = lock:lock(key)
+                ngx.say("sub thread: lock: ", elapsed, " ", err)
+                ngx.sleep(0.1)
+                ngx.say("sub thread: unlock: ", lock:unlock(key))
+            end)
+
+            local lock = resty_lock:new("cache_locks")
+            local elapsed, err = lock:lock(key)
+            ngx.say("main thread: lock: ", elapsed, " ", err)
+            ngx.say("main thread: unlock: ", lock:unlock())
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^sub thread: lock: 0 nil
+sub thread: unlock: 1
+main thread: lock: 0.12[6-9] nil
+main thread: unlock: 1
+$
+--- no_error_log
+[error]
+
+
+
+=== TEST 5: waited locks (custom step)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local resty_lock = require "resty.lock"
+            local key = "blah"
+            local t, err = ngx.thread.spawn(function ()
+                local lock = resty_lock:new("cache_locks")
+                local elapsed, err = lock:lock(key)
+                ngx.say("sub thread: lock: ", elapsed, " ", err)
+                ngx.sleep(0.1)
+                ngx.say("sub thread: unlock: ", lock:unlock(key))
+            end)
+
+            local lock = resty_lock:new("cache_locks", { step = 0.01 })
+            local elapsed, err = lock:lock(key)
+            ngx.say("main thread: lock: ", elapsed, " ", err)
+            ngx.say("main thread: unlock: ", lock:unlock())
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^sub thread: lock: 0 nil
+sub thread: unlock: 1
+main thread: lock: 0.1[4-5]\d* nil
+main thread: unlock: 1
+$
+--- no_error_log
+[error]
+
+
+
+=== TEST 6: waited locks (custom ratio)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local resty_lock = require "resty.lock"
+            local key = "blah"
+            local t, err = ngx.thread.spawn(function ()
+                local lock = resty_lock:new("cache_locks")
+                local elapsed, err = lock:lock(key)
+                ngx.say("sub thread: lock: ", elapsed, " ", err)
+                ngx.sleep(0.1)
+                ngx.say("sub thread: unlock: ", lock:unlock(key))
+            end)
+
+            local lock = resty_lock:new("cache_locks", { ratio = 3 })
+            local elapsed, err = lock:lock(key)
+            ngx.say("main thread: lock: ", elapsed, " ", err)
+            ngx.say("main thread: unlock: ", lock:unlock())
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^sub thread: lock: 0 nil
+sub thread: unlock: 1
+main thread: lock: 0.1[2]\d* nil
+main thread: unlock: 1
+$
+--- no_error_log
+[error]
+
+
+
+=== TEST 7: waited locks (custom max step)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local resty_lock = require "resty.lock"
+            local key = "blah"
+            local t, err = ngx.thread.spawn(function ()
+                local lock = resty_lock:new("cache_locks")
+                local elapsed, err = lock:lock(key)
+                ngx.say("sub thread: lock: ", elapsed, " ", err)
+                ngx.sleep(0.1)
+                ngx.say("sub thread: unlock: ", lock:unlock(key))
+            end)
+
+            local lock = resty_lock:new("cache_locks", { max_step = 0.05 })
+            local elapsed, err = lock:lock(key)
+            ngx.say("main thread: lock: ", elapsed, " ", err)
+            ngx.say("main thread: unlock: ", lock:unlock())
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^sub thread: lock: 0 nil
+sub thread: unlock: 1
+main thread: lock: 0.11[2-4]\d* nil
+main thread: unlock: 1
+$
+--- no_error_log
+[error]
+
+
+
+=== TEST 8: lock expired by itself
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local resty_lock = require "resty.lock"
+            local key = "blah"
+            local t, err = ngx.thread.spawn(function ()
+                local lock = resty_lock:new("cache_locks", { exptime = 0.1 })
+                local elapsed, err = lock:lock(key)
+                ngx.say("sub thread: lock: ", elapsed, " ", err)
+                ngx.sleep(0.1)
+                -- ngx.say("sub thread: unlock: ", lock:unlock(key))
+            end)
+
+            local lock = resty_lock:new("cache_locks", { max_step = 0.05 })
+            local elapsed, err = lock:lock(key)
+            ngx.say("main thread: lock: ", elapsed, " ", err)
+            ngx.say("main thread: unlock: ", lock:unlock())
+        ';
+    }
+--- request
+GET /t
+--- response_body_like chop
+^sub thread: lock: 0 nil
+main thread: lock: 0.11[2-4]\d* nil
+main thread: unlock: 1
+$
+--- no_error_log
+[error]
+
+
+
+=== TEST 9: ref & unref (1 at most)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lock = require "resty.lock"
+            local memo = lock.memo
+            local ref = lock.ref_obj("foo")
+            ngx.say(#memo)
+            lock.unref_obj(ref)
+            ngx.say(#memo)
+            ref = lock.ref_obj("bar")
+            ngx.say(#memo)
+            lock.unref_obj(ref)
+            ngx.say(#memo)
+        ';
+    }
+--- request
+GET /t
+--- response_body
+1
+0
+1
+0
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 10: ref & unref (2 at most)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lock = require "resty.lock"
+            local memo = lock.memo
+
+            for i = 1, 2 do
+                local refs = {}
+
+                refs[1] = lock.ref_obj("foo")
+                ngx.say(#memo)
+
+                refs[2] = lock.ref_obj("bar")
+                ngx.say(#memo)
+
+                lock.unref_obj(refs[1])
+                ngx.say(#memo)
+
+                lock.unref_obj(refs[2])
+                ngx.say(#memo)
+            end
+        ';
+    }
+--- request
+GET /t
+--- response_body
+1
+2
+2
+2
+2
+2
+1
+1
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 11: lock on a nil key
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lock = require "resty.lock"
+            local lock = lock:new("cache_locks")
+            local elapsed, err = lock:lock(nil)
+            if elapsed then
+                ngx.say("lock: ", elapsed, ", ", err)
+                local ok, err = lock:unlock()
+                if not ok then
+                    ngx.say("failed to unlock: ", err)
+                end
+            else
+                ngx.say("failed to lock: ", err)
+            end
+        ';
+    }
+--- request
+GET /t
+--- response_body
+failed to lock: nil key
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 12: same shdict, multple locks
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lock = require "resty.lock"
+            local memo = lock.memo
+            local lock1 = lock:new("cache_locks", { timeout = 0.01 })
+            for i = 1, 3 do
+                lock1:lock("lock_key")
+                lock1:unlock()
+                collectgarbage("collect")
+            end
+
+            local lock2 = lock:new("cache_locks", { timeout = 0.01 })
+            local lock3 = lock:new("cache_locks", { timeout = 0.01 })
+            lock2:lock("lock_key")
+            lock3:lock("lock_key")
+            collectgarbage("collect")
+
+            ngx.say(#memo)
+
+            lock2:unlock()
+            lock3:unlock()
+            collectgarbage("collect")
+        ';
+    }
+--- request
+GET /t
+--- response_body
+4
+--- no_error_log
+[error]
+
+
+
+=== TEST 13: timed out locks (0 timeout)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lock = require "resty.lock"
+            for i = 1, 2 do
+                local lock1 = lock:new("cache_locks", { timeout = 0 })
+                local lock2 = lock:new("cache_locks", { timeout = 0 })
+
+                local elapsed, err = lock1:lock("foo")
+                ngx.say("lock 1: lock: ", elapsed, ", ", err)
+
+                local elapsed, err = lock2:lock("foo")
+                ngx.say("lock 2: lock: ", elapsed, ", ", err)
+
+                local ok, err = lock1:unlock()
+                ngx.say("lock 1: unlock: ", ok, ", ", err)
+
+                local ok, err = lock2:unlock()
+                ngx.say("lock 2: unlock: ", ok, ", ", err)
+            end
+        ';
+    }
+--- request
+GET /t
+--- response_body
+lock 1: lock: 0, nil
+lock 2: lock: nil, timeout
+lock 1: unlock: 1, nil
+lock 2: unlock: nil, unlocked
+lock 1: lock: 0, nil
+lock 2: lock: nil, timeout
+lock 1: unlock: 1, nil
+lock 2: unlock: nil, unlocked
+
+--- no_error_log
+[error]
+

controllers/nginx-third-party/lua/vendor/lua-resty-lock/valgrind.suppress

@@ -0,0 +1,53 @@
+# Valgrind suppression file for LuaJIT 2.0.
+{
+   Optimized string compare
+   Memcheck:Addr4
+   fun:lj_str_cmp
+}
+{
+   Optimized string compare
+   Memcheck:Addr1
+   fun:lj_str_cmp
+}
+{
+   Optimized string compare
+   Memcheck:Addr4
+   fun:lj_str_new
+}
+{
+   Optimized string compare
+   Memcheck:Addr1
+   fun:lj_str_new
+}
+{
+   Optimized string compare
+   Memcheck:Cond
+   fun:lj_str_new
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_event_process_init
+}
+{
+    <insert_a_suppression_name_here>
+    Memcheck:Param
+    epoll_ctl(event)
+    fun:epoll_ctl
+    fun:ngx_epoll_add_event
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:index
+   fun:expand_dynamic_string_token
+   fun:_dl_map_object
+   fun:map_doit
+   fun:_dl_catch_error
+   fun:do_preload
+   fun:dl_main
+   fun:_dl_sysdep_start
+   fun:_dl_start
+}

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/.gitattributes

@@ -0,0 +1 @@
+*.t linguist-language=Text

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/.gitignore

@@ -0,0 +1,10 @@
+*.swp
+*.swo
+*~
+go
+t/servroot/
+reindex
+nginx
+ctags
+tags
+a.lua

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/Makefile

@@ -0,0 +1,19 @@
+OPENRESTY_PREFIX=/usr/local/openresty
+
+PREFIX ?=          /usr/local
+LUA_INCLUDE_DIR ?= $(PREFIX)/include
+LUA_LIB_DIR ?=     $(PREFIX)/lib/lua/$(LUA_VERSION)
+INSTALL ?= install
+
+.PHONY: all test install
+
+all: ;
+
+install: all
+	$(INSTALL) -d $(DESTDIR)/$(LUA_LIB_DIR)/resty/lrucache
+	$(INSTALL) lib/resty/*.lua $(DESTDIR)/$(LUA_LIB_DIR)/resty/
+	$(INSTALL) lib/resty/lrucache/*.lua $(DESTDIR)/$(LUA_LIB_DIR)/resty/lrucache/
+
+test: all
+	PATH=$(OPENRESTY_PREFIX)/nginx/sbin:$$PATH prove -I../test-nginx/lib -r t
+

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/README.markdown

@@ -0,0 +1,293 @@
+Name
+====
+
+lua-resty-lrucache - in-Lua LRU Cache based on LuaJIT FFI
+
+Table of Contents
+=================
+
+* [Name](#name)
+* [Status](#status)
+* [Synopsis](#synopsis)
+* [Description](#description)
+* [Methods](#methods)
+    * [new](#new)
+    * [set](#set)
+    * [get](#get)
+    * [delete](#delete)
+* [Prerequisites](#prerequisites)
+* [Installation](#installation)
+* [TODO](#todo)
+* [Community](#community)
+    * [English Mailing List](#english-mailing-list)
+    * [Chinese Mailing List](#chinese-mailing-list)
+* [Bugs and Patches](#bugs-and-patches)
+* [Author](#author)
+* [Copyright and License](#copyright-and-license)
+* [See Also](#see-also)
+
+Status
+======
+
+This library is still under active development and is considered production ready.
+
+Synopsis
+========
+
+```lua
+-- file myapp.lua: example "myapp" module
+
+local _M = {}
+
+-- alternatively: local lrucache = require "resty.lrucache.pureffi"
+local lrucache = require "resty.lrucache"
+
+-- we need to initialize the cache on the lua module level so that
+-- it can be shared by all the requests served by each nginx worker process:
+local c = lrucache.new(200)  -- allow up to 200 items in the cache
+if not c then
+    return error("failed to create the cache: " .. (err or "unknown"))
+end
+
+function _M.go()
+    c:set("dog", 32)
+    c:set("cat", 56)
+    ngx.say("dog: ", c:get("dog"))
+    ngx.say("cat: ", c:get("cat"))
+
+    c:set("dog", { age = 10 }, 0.1)  -- expire in 0.1 sec
+    c:delete("dog")
+end
+
+return _M
+```
+
+```nginx
+# nginx.conf
+
+http {
+    lua_package_path "/path/to/lua-resty-lrucache/lib/?.lua;;";
+
+    server {
+        listen 8080;
+
+        location = /t {
+            content_by_lua '
+                require("myapp").go()
+            ';
+        }
+    }
+}
+```
+
+Description
+===========
+
+This library implements a simple LRU cache for [OpenResty](http://openresty.org) and the [ngx_lua](https://github.com/openresty/lua-nginx-module) module.
+
+This cache also supports expiration time.
+
+The LRU cache resides completely in the Lua VM and is subject to Lua GC. So do not expect
+it to get shared across the OS process boundary. The upside is that you can cache
+arbitrary complex Lua values (like deep nested Lua tables) without the overhead of
+serialization (as with `ngx_lua`'s
+[shared dictionary API](https://github.com/openresty/lua-nginx-module#lua_shared_dict)).
+The downside is that your cache is always limited to the current OS process
+(like the current nginx worker process). It does not really make much sense to use this
+library in the context of [init_by_lua](https://github.com/openresty/lua-nginx-module#lua_shared_dict)
+because the cache will not get shared by any of the worker processes
+(unless you just want to "warm up" the cache with predefined items which will get
+inherited by the workers via `fork`).
+
+There are two different implementations included in this library, in the form of
+two classes: `resty.lrucache` and `resty.lrucache.pureffi`. They share exactly the same API. The only difference is that the latter
+is a pure FFI implementation that also implements an FFI-based hash table
+for the cache lookup while the former uses native Lua tables for it.
+
+If the cache hit rate is relatively high, you should use the `resty.lrucache` class which is faster than `resty.lrucache.pureffi`.
+
+But if the cache hit rate is relatively low and there can be a *lot* of
+variations of keys inserted into and removed from the cache, then you should use the `resty.lrucache.pureffi` instead, because
+Lua tables are not good at removing keys frequently by design and you
+would see the `resizetab` function call in the LuaJIT runtime being very hot in
+[on-CPU flame graphs](https://github.com/openresty/stapxx#lj-lua-stacks) if
+you use the `resty.lrucache` class instead of `resty.lrucache.pureffi` in this use case.
+
+[Back to TOC](#table-of-contents)
+
+Methods
+=======
+
+To load this library,
+
+1. you need to specify this library's path in ngx_lua's [lua_package_path](https://github.com/openresty/lua-nginx-module#lua_package_path) directive. For example, `lua_package_path "/path/to/lua-resty-lrucache/lib/?.lua;;";`.
+2. you use `require` to load the library into a local Lua variable:
+
+```lua
+    local lrucache = require "resty.lrucache"
+```
+
+or
+
+```lua
+    local lrucache = require "resty.lrucache.pureffi"
+```
+
+[Back to TOC](#table-of-contents)
+
+new
+---
+`syntax: cache, err = lrucache.new(max_items [, load_factor])`
+
+Creates a new cache instance. If failed, returns `nil` and a string describing the error.
+
+The `max_items` argument specifies the maximal number of items held in the cache.
+
+The `load-factor` argument designates the "load factor" of the FFI-based hash-table used internally by `resty.lrucache.pureffi`;
+the default value is 0.5 (i.e. 50%); if the load factor is specified, it will be clamped
+to the range of `[0.1, 1]` (i.e. if load factor is greater than 1, it will be saturated to
+1; likewise, if load-factor is smaller than `0.1`, it will be clamped to `0.1`). This argument is only meaningful for `resty.lrucache.pureffi`.
+
+[Back to TOC](#table-of-contents)
+
+set
+---
+`syntax: cache:set(key, value, ttl)`
+
+Sets a key with a value and an expiration time.
+
+The `ttl` argument specifies the expiration time period. The time value is in seconds, but you can also specify the fraction number part, like `0.25`. A nil `ttl` argument value means never expired (which is the default).
+
+When the cache is full, the cache will automatically evict the least recently used item.
+
+[Back to TOC](#table-of-contents)
+
+get
+---
+`syntax: data, stale_data = cache:get(key)`
+
+Fetches a value with the key. If the key does not exist in the cache or has already expired, a `nil` value will be returned.
+
+Starting from `v0.03`, the stale data is also returned as the second return value if available.
+
+[Back to TOC](#table-of-contents)
+
+delete
+------
+`syntax: cache:delete(key)`
+
+Removes an item specified by the key from the cache.
+
+[Back to TOC](#table-of-contents)
+
+Prerequisites
+=============
+
+* [LuaJIT](http://luajit.org) 2.0+
+* [ngx_lua](https://github.com/openresty/lua-nginx-module) 0.8.10+
+
+[Back to TOC](#table-of-contents)
+
+Installation
+============
+
+It is recommended to use the latest [ngx_openresty bundle](http://openresty.org) directly. At least ngx_openresty 1.4.2.9 is required. And you need to enable LuaJIT when building your ngx_openresty
+bundle by passing the `--with-luajit` option to its `./configure` script. No extra Nginx configuration is required.
+
+If you want to use this library with your own Nginx build (with ngx_lua), then you need to
+ensure you are using at least ngx_lua 0.8.10.
+
+Also, You need to configure
+the [lua_package_path](https://github.com/openresty/lua-nginx-module#lua_package_path) directive to
+add the path of your lua-resty-lrucache source tree to ngx_lua's Lua module search path, as in
+
+```nginx
+    # nginx.conf
+    http {
+        lua_package_path "/path/to/lua-resty-lrucache/lib/?.lua;;";
+        ...
+    }
+```
+
+and then load the library in Lua:
+
+```lua
+    local lrucache = require "resty.lrucache"
+```
+
+[Back to TOC](#table-of-contents)
+
+TODO
+====
+
+* add new method `get_stale` for fetching already expired items.
+* add new method `flush_all` for flushing out everything in the cache.
+
+[Back to TOC](#table-of-contents)
+
+Community
+=========
+
+[Back to TOC](#table-of-contents)
+
+English Mailing List
+--------------------
+
+The [openresty-en](https://groups.google.com/group/openresty-en) mailing list is for English speakers.
+
+[Back to TOC](#table-of-contents)
+
+Chinese Mailing List
+--------------------
+
+The [openresty](https://groups.google.com/group/openresty) mailing list is for Chinese speakers.
+
+[Back to TOC](#table-of-contents)
+
+Bugs and Patches
+================
+
+Please report bugs or submit patches by
+
+1. creating a ticket on the [GitHub Issue Tracker](https://github.com/openresty/lua-resty-lrucache/issues),
+1. or posting to the [OpenResty community](#community).
+
+[Back to TOC](#table-of-contents)
+
+Author
+======
+
+Yichun "agentzh" Zhang (章亦春) <agentzh@gmail.com>, CloudFlare Inc.
+
+Shuxin Yang, CloudFlare Inc.
+
+[Back to TOC](#table-of-contents)
+
+Copyright and License
+=====================
+
+This module is licensed under the BSD license.
+
+Copyright (C) 2014-2015, by Yichun "agentzh" Zhang, CloudFlare Inc.
+
+Copyright (C) 2014-2015, by Shuxin Yang, CloudFlare Inc.
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+[Back to TOC](#table-of-contents)
+
+See Also
+========
+* the ngx_lua module: https://github.com/chaoslawful/lua-nginx-module
+* OpenResty: http://openresty.org
+
+[Back to TOC](#table-of-contents)
+

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/lib/resty/lrucache.lua

@@ -0,0 +1,229 @@
+-- Copyright (C) Yichun Zhang (agentzh)
+
+
+local ffi = require "ffi"
+local ffi_new = ffi.new
+local ffi_sizeof = ffi.sizeof
+local ffi_cast = ffi.cast
+local ffi_fill = ffi.fill
+local ngx_now = ngx.now
+local uintptr_t = ffi.typeof("uintptr_t")
+local setmetatable = setmetatable
+local tonumber = tonumber
+
+
+-- queue data types
+--
+-- this queue is a double-ended queue and the first node
+-- is reserved for the queue itself.
+-- the implementation is mostly borrowed from nginx's ngx_queue_t data
+-- structure.
+
+ffi.cdef[[
+    typedef struct lrucache_queue_s  lrucache_queue_t;
+    struct lrucache_queue_s {
+        double             expire;  /* in seconds */
+        lrucache_queue_t  *prev;
+        lrucache_queue_t  *next;
+    };
+]]
+
+local queue_arr_type = ffi.typeof("lrucache_queue_t[?]")
+local queue_ptr_type = ffi.typeof("lrucache_queue_t*")
+local queue_type = ffi.typeof("lrucache_queue_t")
+local NULL = ffi.null
+
+
+-- queue utility functions
+
+local function queue_insert_tail(h, x)
+    local last = h[0].prev
+    x.prev = last
+    last.next = x
+    x.next = h
+    h[0].prev = x
+end
+
+
+local function queue_init(size)
+    if not size then
+        size = 0
+    end
+    local q = ffi_new(queue_arr_type, size + 1)
+    ffi_fill(q, ffi_sizeof(queue_type, size + 1), 0)
+
+    if size == 0 then
+        q[0].prev = q
+        q[0].next = q
+
+    else
+        local prev = q[0]
+        for i = 1, size do
+          local e = q[i]
+          prev.next = e
+          e.prev = prev
+          prev = e
+        end
+
+        local last = q[size]
+        last.next = q
+        q[0].prev = last
+    end
+
+    return q
+end
+
+
+local function queue_is_empty(q)
+    -- print("q: ", tostring(q), "q.prev: ", tostring(q), ": ", q == q.prev)
+    return q == q[0].prev
+end
+
+
+local function queue_remove(x)
+    local prev = x.prev
+    local next = x.next
+
+    next.prev = prev
+    prev.next = next
+
+    -- for debugging purpose only:
+    x.prev = NULL
+    x.next = NULL
+end
+
+
+local function queue_insert_head(h, x)
+    x.next = h[0].next
+    x.next.prev = x
+    x.prev = h
+    h[0].next = x
+end
+
+
+local function queue_last(h)
+    return h[0].prev
+end
+
+
+local function queue_head(h)
+    return h[0].next
+end
+
+
+-- true module stuffs
+
+local _M = {
+    _VERSION = '0.04'
+}
+local mt = { __index = _M }
+
+
+local function ptr2num(ptr)
+    return tonumber(ffi_cast(uintptr_t, ptr))
+end
+
+
+function _M.new(size)
+    if size < 1 then
+        return nil, "size too small"
+    end
+
+    local self = {
+        keys = {},
+        hasht = {},
+        free_queue = queue_init(size),
+        cache_queue = queue_init(),
+        key2node = {},
+        node2key = {},
+    }
+    return setmetatable(self, mt)
+end
+
+
+function _M.get(self, key)
+    local hasht = self.hasht
+    local val = hasht[key]
+    if not val then
+        return nil
+    end
+
+    local node = self.key2node[key]
+
+    -- print(key, ": moving node ", tostring(node), " to cache queue head")
+    local cache_queue = self.cache_queue
+    queue_remove(node)
+    queue_insert_head(cache_queue, node)
+
+    if node.expire >= 0 and node.expire < ngx_now() then
+        -- print("expired: ", node.expire, " > ", ngx_now())
+        return nil, val
+    end
+    return val
+end
+
+
+function _M.delete(self, key)
+    self.hasht[key] = nil
+
+    local key2node = self.key2node
+    local node = key2node[key]
+
+    if not node then
+        return false
+    end
+
+    key2node[key] = nil
+    self.node2key[ptr2num(node)] = nil
+
+    queue_remove(node)
+    queue_insert_tail(self.free_queue, node)
+    return true
+end
+
+
+function _M.set(self, key, value, ttl)
+    local hasht = self.hasht
+    hasht[key] = value
+
+    local key2node = self.key2node
+    local node = key2node[key]
+    if not node then
+        local free_queue = self.free_queue
+        local node2key = self.node2key
+
+        if queue_is_empty(free_queue) then
+            -- evict the least recently used key
+            -- assert(not queue_is_empty(self.cache_queue))
+            node = queue_last(self.cache_queue)
+
+            local oldkey = node2key[ptr2num(node)]
+            -- print(key, ": evicting oldkey: ", oldkey, ", oldnode: ",
+            --         tostring(node))
+            if oldkey then
+                hasht[oldkey] = nil
+                key2node[oldkey] = nil
+            end
+
+        else
+            -- take a free queue node
+            node = queue_head(free_queue)
+            -- print(key, ": get a new free node: ", tostring(node))
+        end
+
+        node2key[ptr2num(node)] = key
+        key2node[key] = node
+    end
+
+    queue_remove(node)
+    queue_insert_head(self.cache_queue, node)
+
+    if ttl then
+        node.expire = ngx_now() + ttl
+    else
+        node.expire = -1
+    end
+end
+
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/lib/resty/lrucache/pureffi.lua

@@ -0,0 +1,534 @@
+-- Copyright (C) Yichun Zhang (agentzh)
+-- Copyright (C) Shuxin Yang
+
+--[[
+  This module implements a key/value cache store. We adopt LRU as our
+replace/evict policy. Each key/value pair is tagged with a Time-to-Live (TTL);
+from user's perspective, stale pairs are automatically removed from the cache.
+
+Why FFI
+-------
+  In Lua, expression "table[key] = nil" does not *PHYSICALLY* remove the value
+associated with the key; it just set the value to be nil! So the table will
+keep growing with large number of the key/nil pairs which will be purged until
+resize() operator is called.
+
+  This "feature" is terribly ill-suited to what we need. Therefore we have to
+rely on FFI to build a hash-table where any entry can be physically deleted
+immediately.
+
+Under the hood:
+--------------
+  In concept, we introduce three data structures to implement the cache store:
+    1. key/value vector for storing keys and values.
+    2. a queue to mimic the LRU.
+    3. hash-table for looking up the value for a given key.
+
+  Unfortunately, efficiency and clarity usually come at each other cost. The
+data strucutres we are using are slightly more complicated than what we
+described above.
+
+   o. Lua does not have efficient way to store a vector of pair. So, we use
+      two vectors for key/value pair: one for keys and the other for values
+      (_M.key_v and _M.val_v, respectively), and i-th key corresponds to
+      i-th value.
+
+      A key/value pair is identified by the "id" field in a "node" (we shall
+      discuss node later)
+
+    o. The queue is nothing more than a doubly-linked list of "node" linked via
+        lrucache_pureffi_queue_s::{next|prev} fields.
+
+    o. The hash-table has two parts:
+        - the _M.bucket_v[] a vector of bucket, indiced by hash-value, and
+        - a bucket is a singly-linked list of "node" via the
+          lrucache_pureffi_queue_s::conflict field.
+
+      A key must be a string, and the hash value of a key is evaluated by:
+      crc32(key-cast-to-pointer) % size(_M.bucket_v).
+      We mandate size(_M.bucket_v) being a power-of-two in order to avoid
+      expensive modulo operation.
+
+    At the heart of the module is an array of "node" (of type
+    lrucache_pureffi_queue_s). A node:
+      - keeps the meta-data of its corresponding key/value pair
+        (embodied by the "id", and "expire" field);
+      - is a part of LRU queue (embodied by "prev" and "next" fields);
+      - is a part of hash-table (embodied by the "conflict" field).
+]]
+
+local ffi = require "ffi"
+local bit = require "bit"
+
+
+local ffi_new = ffi.new
+local ffi_sizeof = ffi.sizeof
+local ffi_cast = ffi.cast
+local ffi_fill = ffi.fill
+local ngx_now = ngx.now
+local uintptr_t = ffi.typeof("uintptr_t")
+local c_str_t = ffi.typeof("const char*")
+local int_t = ffi.typeof("int")
+local int_array_t = ffi.typeof("int[?]")
+
+
+local crc_tab = ffi.new("const unsigned int[256]", {
+    0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
+    0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
+    0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
+    0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+    0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
+    0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
+    0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
+    0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+    0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
+    0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
+    0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
+    0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+    0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
+    0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
+    0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
+    0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+    0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
+    0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
+    0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
+    0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+    0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
+    0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
+    0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
+    0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+    0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
+    0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
+    0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
+    0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+    0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
+    0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
+    0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
+    0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+    0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
+    0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
+    0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
+    0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+    0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
+    0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
+    0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
+    0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+    0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
+    0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
+    0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D });
+
+local setmetatable = setmetatable
+local tonumber = tonumber
+local tostring = tostring
+local type = type
+
+local brshift = bit.rshift
+local bxor = bit.bxor
+local band = bit.band
+
+local ok, tab_new = pcall(require, "table.new")
+if not ok then
+    tab_new = function (narr, nrec) return {} end
+end
+
+-- queue data types
+--
+-- this queue is a double-ended queue and the first node
+-- is reserved for the queue itself.
+-- the implementation is mostly borrowed from nginx's ngx_queue_t data
+-- structure.
+
+ffi.cdef[[
+    /* A lrucache_pureffi_queue_s node hook together three data structures:
+     *   o. the key/value store as embodied by the "id" (which is in essence the
+     *      indentifier of key/pair pair) and the "expire" (which is a metadata
+     *      of the corresponding key/pair pair).
+     *   o. The LRU queue via the prev/next fields.
+     *   o. The hash-tabble as embodied by the "conflict" field.
+     */
+    typedef struct lrucache_pureffi_queue_s  lrucache_pureffi_queue_t;
+    struct lrucache_pureffi_queue_s {
+        /* Each node is assigned a unique ID at construction time, and the
+         * ID remain immutatble, regardless the node is in active-list or
+         * free-list. The queue header is assigned ID 0. Since queue-header
+         * is a sentinel node, 0 denodes "invalid ID".
+         *
+         * Intuitively, we can view the "id" as the identifier of key/value
+         * pair.
+         */
+        int                id;
+
+        /* The bucket of the hash-table is implemented as a singly-linked list.
+         * The "conflict" refers to the ID of the next node in the bucket.
+         */
+        int                conflict;
+
+        double             expire;  /* in seconds */
+
+        lrucache_pureffi_queue_t  *prev;
+        lrucache_pureffi_queue_t  *next;
+    };
+]]
+
+local queue_arr_type = ffi.typeof("lrucache_pureffi_queue_t[?]")
+--local queue_ptr_type = ffi.typeof("lrucache_pureffi_queue_t*")
+local queue_type = ffi.typeof("lrucache_pureffi_queue_t")
+local NULL = ffi.null
+
+
+--========================================================================
+--
+--              Queue utility functions
+--
+--========================================================================
+
+-- Append the element "x" to the given queue "h".
+local function queue_insert_tail(h, x)
+    local last = h[0].prev
+    x.prev = last
+    last.next = x
+    x.next = h
+    h[0].prev = x
+end
+
+
+--[[
+Allocate a queue with size + 1 elements. Elements are linked together in a
+circular way, i.e. the last element's "next" points to the first element,
+while the first element's "prev" element points to the last element.
+]]
+local function queue_init(size)
+    if not size then
+        size = 0
+    end
+    local q = ffi_new(queue_arr_type, size + 1)
+    ffi_fill(q, ffi_sizeof(queue_type, size + 1), 0)
+
+    if size == 0 then
+        q[0].prev = q
+        q[0].next = q
+
+    else
+        local prev = q[0]
+        for i = 1, size do
+          local e = q[i]
+          e.id = i
+          prev.next = e
+          e.prev = prev
+          prev = e
+        end
+
+        local last = q[size]
+        last.next = q
+        q[0].prev = last
+    end
+
+    return q
+end
+
+
+local function queue_is_empty(q)
+    -- print("q: ", tostring(q), "q.prev: ", tostring(q), ": ", q == q.prev)
+    return q == q[0].prev
+end
+
+
+local function queue_remove(x)
+    local prev = x.prev
+    local next = x.next
+
+    next.prev = prev
+    prev.next = next
+
+    -- for debugging purpose only:
+    x.prev = NULL
+    x.next = NULL
+end
+
+
+-- Insert the element "x" the to the given queue "h"
+local function queue_insert_head(h, x)
+    x.next = h[0].next
+    x.next.prev = x
+    x.prev = h
+    h[0].next = x
+end
+
+
+local function queue_last(h)
+    return h[0].prev
+end
+
+
+local function queue_head(h)
+    return h[0].next
+end
+
+
+--========================================================================
+--
+--              Miscellaneous Utility Functions
+--
+--========================================================================
+
+local function ptr2num(ptr)
+    return tonumber(ffi_cast(uintptr_t, ptr))
+end
+
+
+local function crc32_ptr(ptr)
+    local p = brshift(ptr2num(ptr), 3)
+    local b = band(p, 255)
+    local crc32 = crc_tab[b]
+
+    b = band(brshift(p, 8), 255)
+    crc32 = bxor(brshift(crc32, 8), crc_tab[band(bxor(crc32, b), 255)])
+
+    b = band(brshift(p, 16), 255)
+    crc32 = bxor(brshift(crc32, 8), crc_tab[band(bxor(crc32, b), 255)])
+
+    --b = band(brshift(p, 24), 255)
+    --crc32 = bxor(brshift(crc32, 8), crc_tab[band(bxor(crc32, b), 255)])
+    return crc32
+end
+
+
+--========================================================================
+--
+--              Implementation of "export" functions
+--
+--========================================================================
+
+local _M = {
+    _VERSION = '0.04'
+}
+local mt = { __index = _M }
+
+
+-- "size" specifies the maximum number of entries in the LRU queue, and the
+-- "load_factor" designates the 'load factor' of the hash-table we are using
+-- internally. The default value of load-factor is 0.5 (i.e. 50%); if the
+-- load-factor is specified, it will be clamped to the range of [0.1, 1](i.e.
+-- if load-factor is greater than 1, it will be saturated to 1, likewise,
+-- if load-factor is smaller than 0.1, it will be clamped to 0.1).
+function _M.new(size, load_factor)
+    if size < 1 then
+        return nil, "size too small"
+    end
+
+    -- Determine bucket size, which must be power of two.
+    local load_f = load_factor
+    if not load_factor then
+        load_f = 0.5
+    elseif load_factor > 1 then
+        load_f = 1
+    elseif load_factor < 0.1 then
+        load_f = 0.1
+    end
+
+    local bs_min = size / load_f
+    -- The bucket_sz *MUST* be a power-of-two. See the hash_string().
+    local bucket_sz = 1
+    repeat
+        bucket_sz = bucket_sz * 2
+    until bucket_sz >= bs_min
+
+    local self = {
+        size = size,
+        bucket_sz = bucket_sz,
+        free_queue = queue_init(size),
+        cache_queue = queue_init(0),
+        node_v = nil,
+        key_v = tab_new(size, 0),
+        val_v = tab_new(size, 0),
+        bucket_v = ffi_new(int_array_t, bucket_sz)
+    }
+    -- "note_v" is an array of all the nodes used in the LRU queue. Exprpession
+    -- node_v[i] evaluates to the element of ID "i".
+    self.node_v = self.free_queue
+
+    -- Allocate the array-part of the key_v, val_v, bucket_v.
+    --local key_v = self.key_v
+    --local val_v = self.val_v
+    --local bucket_v = self.bucket_v
+    ffi_fill(self.bucket_v, ffi_sizeof(int_t, bucket_sz), 0)
+
+    return setmetatable(self, mt)
+end
+
+
+local function hash_string(self, str)
+    local c_str = ffi_cast(c_str_t, str)
+
+    local hv = crc32_ptr(c_str)
+    hv = band(hv, self.bucket_sz - 1)
+    -- Hint: bucket is 0-based
+    return hv
+end
+
+
+-- Search the node associated with the key in the bucket, if found returns
+-- the the id of the node, and the id of its previous node in the conflict list.
+-- The "bucket_hdr_id" is the ID of the first node in the bucket
+local function _find_node_in_bucket(key, key_v, node_v, bucket_hdr_id)
+    if bucket_hdr_id ~= 0 then
+        local prev = 0
+        local cur = bucket_hdr_id
+
+        while cur ~= 0 and key_v[cur] ~= key do
+            prev = cur
+            cur = node_v[cur].conflict
+        end
+
+        if cur ~= 0 then
+            return cur, prev
+        end
+    end
+end
+
+
+-- Return the node corresponding to the key/val.
+local function find_key(self, key)
+    local key_hash = hash_string(self, key)
+    return _find_node_in_bucket(key, self.key_v, self.node_v,
+                                self.bucket_v[key_hash])
+end
+
+
+--[[ This function tries to
+  1. Remove the given key and the associated value from the key/value store,
+  2. Remove the entry associated with the key from the hash-table.
+
+  NOTE: all queues remain intact.
+
+  If there was a node bound to the key/val, return that node; otherwise,
+  nil is returned.
+]]
+local function remove_key(self, key)
+    local key_v = self.key_v
+    local val_v = self.val_v
+    local node_v = self.node_v
+    local bucket_v = self.bucket_v
+
+    local key_hash = hash_string(self, key)
+    local cur, prev =
+        _find_node_in_bucket(key, key_v, node_v, bucket_v[key_hash])
+
+    if cur then
+        -- In an attempt to make key and val dead.
+        key_v[cur] = nil
+        val_v[cur] = nil
+
+        -- Remove the node from the hash table
+        local next_node = node_v[cur].conflict
+        if prev ~= 0 then
+            node_v[prev].conflict = next_node
+        else
+            bucket_v[key_hash] = next_node
+        end
+        node_v[cur].conflict = 0
+
+        return cur
+    end
+end
+
+
+--[[ Bind the key/val with the given node, and insert the node into the Hashtab.
+    NOTE: this function does not touch any queue
+]]
+local function insert_key(self, key, val, node)
+    -- Bind the key/val with the node
+    local node_id = node.id
+    self.key_v[node_id] = key
+    self.val_v[node_id] = val
+
+    -- Insert the node into the hash-table
+    local key_hash = hash_string(self, key)
+    local bucket_v = self.bucket_v
+    node.conflict = bucket_v[key_hash]
+    bucket_v[key_hash] = node_id
+end
+
+
+function _M.get(self, key)
+    if type(key) ~= "string" then
+        key = tostring(key)
+    end
+
+    local node_id = find_key(self, key)
+    if not node_id then
+        return nil
+    end
+
+    -- print(key, ": moving node ", tostring(node), " to cache queue head")
+    local cache_queue = self.cache_queue
+    local node = self.node_v + node_id
+    queue_remove(node)
+    queue_insert_head(cache_queue, node)
+
+    local expire = node.expire
+    if expire >= 0 and expire < ngx_now() then
+        -- print("expired: ", node.expire, " > ", ngx_now())
+        return nil, self.val_v[node_id]
+    end
+
+    return self.val_v[node_id]
+end
+
+
+function _M.delete(self, key)
+    if type(key) ~= "string" then
+        key = tostring(key)
+    end
+
+    local node_id = remove_key(self, key);
+    if not node_id then
+        return false
+    end
+
+    local node = self.node_v + node_id
+    queue_remove(node)
+    queue_insert_tail(self.free_queue, node)
+    return true
+end
+
+
+function _M.set(self, key, value, ttl)
+    if type(key) ~= "string" then
+        key = tostring(key)
+    end
+
+    local node_id = find_key(self, key)
+    local node
+    if not node_id then
+        local free_queue = self.free_queue
+        if queue_is_empty(free_queue) then
+            -- evict the least recently used key
+            -- assert(not queue_is_empty(self.cache_queue))
+            node = queue_last(self.cache_queue)
+            remove_key(self, self.key_v[node.id])
+        else
+            -- take a free queue node
+            node = queue_head(free_queue)
+            -- print(key, ": get a new free node: ", tostring(node))
+        end
+
+        -- insert the key
+        insert_key(self, key, value, node)
+    else
+        node = self.node_v + node_id
+        self.val_v[node_id] = value
+    end
+
+    queue_remove(node)
+    queue_insert_head(self.cache_queue, node)
+
+    if ttl then
+        node.expire = ngx_now() + ttl
+    else
+        node.expire = -1
+    end
+end
+
+
+return _M

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/t/init-by-lua.t

@@ -0,0 +1,121 @@
+# vim:set ft= ts=4 sw=4 et fdm=marker:
+
+use Test::Nginx::Socket::Lua;
+use Cwd qw(cwd);
+
+repeat_each(1);
+
+plan tests => repeat_each() * 13;
+
+#no_diff();
+#no_long_string();
+
+my $pwd = cwd();
+
+our $HttpConfig = <<"_EOC_";
+    lua_package_path "$pwd/lib/?.lua;$pwd/../lua-resty-core/lib/?.lua;;";
+    #init_by_lua '
+    #local v = require "jit.v"
+    #v.on("$Test::Nginx::Util::ErrLogFile")
+    #require "resty.core"
+    #';
+
+_EOC_
+
+no_long_string();
+run_tests();
+
+__DATA__
+
+=== TEST 1: sanity
+--- http_config eval
+"$::HttpConfig"
+. qq!
+        init_by_lua '
+            local function log(...)
+                ngx.log(ngx.WARN, ...)
+            end
+
+            local lrucache = require "resty.lrucache"
+            local c = lrucache.new(2)
+
+            collectgarbage()
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            log("dog: ", c:get("dog"))
+            log("cat: ", c:get("cat"))
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            log("dog: ", c:get("dog"))
+            log("cat: ", c:get("cat"))
+
+            c:delete("dog")
+            c:delete("cat")
+            log("dog: ", c:get("dog"))
+            log("cat: ", c:get("cat"))
+        ';
+!
+
+--- config
+    location = /t {
+        echo ok;
+    }
+--- request
+    GET /t
+--- response_body
+ok
+--- no_error_log
+[error]
+--- error_log
+dog: 32
+cat: 56
+dog: 32
+cat: 56
+dog: nil
+cat: nil
+
+
+
+=== TEST 2: sanity
+--- http_config eval
+"$::HttpConfig"
+. qq!
+init_by_lua '
+    lrucache = require "resty.lrucache"
+    flv_index, err = lrucache.new(200)
+    if not flv_index then
+        ngx.log(ngx.ERR, "failed to create the cache: ", err)
+        return
+    end
+
+    flv_meta, err = lrucache.new(200)
+    if not flv_meta then
+        ngx.log(ngx.ERR, "failed to create the cache: ", err)
+        return
+    end
+
+    flv_channel, err = lrucache.new(200)
+    if not flv_channel then
+        ngx.log(ngx.ERR, "failed to create the cache: ", err)
+        return
+    end
+
+    ngx.log(ngx.WARN, "3 lrucache initialized.")
+';
+!
+
+--- config
+    location = /t {
+        echo ok;
+    }
+--- request
+    GET /t
+--- response_body
+ok
+--- no_error_log
+[error]
+--- error_log
+3 lrucache initialized.
+

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/t/mixed.t

@@ -0,0 +1,75 @@
+# vim:set ft= ts=4 sw=4 et fdm=marker:
+
+use Test::Nginx::Socket::Lua;
+use Cwd qw(cwd);
+
+repeat_each(2);
+
+plan tests => repeat_each() * (blocks() * 3);
+
+#no_diff();
+#no_long_string();
+
+my $pwd = cwd();
+
+our $HttpConfig = <<"_EOC_";
+    lua_package_path "$pwd/lib/?.lua;$pwd/../lua-resty-core/lib/?.lua;;";
+    #init_by_lua '
+    #local v = require "jit.v"
+    #v.on("$Test::Nginx::Util::ErrLogFile")
+    #require "resty.core"
+    #';
+
+_EOC_
+
+no_long_string();
+run_tests();
+
+__DATA__
+
+=== TEST 1: sanity
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache"
+            local c = lrucache.new(2)
+
+            collectgarbage()
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            local lrucache = require "resty.lrucache.pureffi"
+            local c2 = lrucache.new(2)
+
+            ngx.say("dog: ", c2:get("dog"))
+            ngx.say("cat: ", c2:get("cat"))
+
+            c2:set("dog", 9)
+            c2:set("cat", "hi")
+
+            ngx.say("dog: ", c2:get("dog"))
+            ngx.say("cat: ", c2:get("cat"))
+
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+cat: 56
+dog: nil
+cat: nil
+dog: 9
+cat: hi
+dog: 32
+cat: 56
+
+--- no_error_log
+[error]
+

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/t/pureffi/init-by-lua.t

@@ -0,0 +1,121 @@
+# vim:set ft= ts=4 sw=4 et fdm=marker:
+
+use Test::Nginx::Socket::Lua;
+use Cwd qw(cwd);
+
+repeat_each(1);
+
+plan tests => repeat_each() * 13;
+
+#no_diff();
+#no_long_string();
+
+my $pwd = cwd();
+
+our $HttpConfig = <<"_EOC_";
+    lua_package_path "$pwd/lib/?.lua;$pwd/../lua-resty-core/lib/?.lua;;";
+    #init_by_lua '
+    #local v = require "jit.v"
+    #v.on("$Test::Nginx::Util::ErrLogFile")
+    #require "resty.core"
+    #';
+
+_EOC_
+
+no_long_string();
+run_tests();
+
+__DATA__
+
+=== TEST 1: sanity
+--- http_config eval
+"$::HttpConfig"
+. qq!
+        init_by_lua '
+            local function log(...)
+                ngx.log(ngx.WARN, ...)
+            end
+
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(2)
+
+            collectgarbage()
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            log("dog: ", c:get("dog"))
+            log("cat: ", c:get("cat"))
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            log("dog: ", c:get("dog"))
+            log("cat: ", c:get("cat"))
+
+            c:delete("dog")
+            c:delete("cat")
+            log("dog: ", c:get("dog"))
+            log("cat: ", c:get("cat"))
+        ';
+!
+
+--- config
+    location = /t {
+        echo ok;
+    }
+--- request
+    GET /t
+--- response_body
+ok
+--- no_error_log
+[error]
+--- error_log
+dog: 32
+cat: 56
+dog: 32
+cat: 56
+dog: nil
+cat: nil
+
+
+
+=== TEST 2: sanity
+--- http_config eval
+"$::HttpConfig"
+. qq!
+init_by_lua '
+    lrucache = require "resty.lrucache.pureffi"
+    flv_index, err = lrucache.new(200)
+    if not flv_index then
+        ngx.log(ngx.ERR, "failed to create the cache: ", err)
+        return
+    end
+
+    flv_meta, err = lrucache.new(200)
+    if not flv_meta then
+        ngx.log(ngx.ERR, "failed to create the cache: ", err)
+        return
+    end
+
+    flv_channel, err = lrucache.new(200)
+    if not flv_channel then
+        ngx.log(ngx.ERR, "failed to create the cache: ", err)
+        return
+    end
+
+    ngx.log(ngx.WARN, "3 lrucache initialized.")
+';
+!
+
+--- config
+    location = /t {
+        echo ok;
+    }
+--- request
+    GET /t
+--- response_body
+ok
+--- no_error_log
+[error]
+--- error_log
+3 lrucache initialized.
+

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/t/pureffi/sanity.t

@@ -0,0 +1,390 @@
+# vim:set ft= ts=4 sw=4 et fdm=marker:
+
+use Test::Nginx::Socket::Lua;
+use Cwd qw(cwd);
+
+repeat_each(2);
+
+plan tests => repeat_each() * (blocks() * 3);
+
+#no_diff();
+#no_long_string();
+
+my $pwd = cwd();
+
+our $HttpConfig = <<"_EOC_";
+    lua_package_path "$pwd/lib/?.lua;$pwd/../lua-resty-core/lib/?.lua;;";
+    #init_by_lua '
+    #local v = require "jit.v"
+    #v.on("$Test::Nginx::Util::ErrLogFile")
+    #require "resty.core"
+    #';
+
+_EOC_
+
+no_long_string();
+run_tests();
+
+__DATA__
+
+=== TEST 1: sanity
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(2)
+
+            collectgarbage()
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            c:delete("dog")
+            c:delete("cat")
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+cat: 56
+dog: 32
+cat: 56
+dog: nil
+cat: nil
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 2: evict existing items
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(2)
+            if not c then
+               ngx.say("failed to init lrucace: ", err)
+               return
+            end
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            c:set("bird", 76)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+            ngx.say("bird: ", c:get("bird"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+cat: 56
+dog: nil
+cat: 56
+bird: 76
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 3: evict existing items (reordered, get should also count)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(2)
+            if not c then
+               ngx.say("failed to init lrucace: ", err)
+               return
+            end
+
+            c:set("cat", 56)
+            c:set("dog", 32)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            c:set("bird", 76)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+            ngx.say("bird: ", c:get("bird"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+cat: 56
+dog: nil
+cat: 56
+bird: 76
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 4: ttl
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(1)
+
+            c:set("dog", 32, 0.6)
+            ngx.say("dog: ", c:get("dog"))
+
+            ngx.sleep(0.3)
+            ngx.say("dog: ", c:get("dog"))
+
+            ngx.sleep(0.31)
+            ngx.say("dog: ", c:get("dog"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+dog: 32
+dog: nil32
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 5: load factor
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(1, 0.25)
+
+            ngx.say(c.bucket_sz)
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+4
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 6: load factor clamped to 0.1
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(3, 0.05)
+
+            ngx.say(c.bucket_sz)
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+32
+--- no_error_log
+[error]
+
+
+
+=== TEST 7: load factor saturated to 1
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(3, 2.1)
+
+            ngx.say(c.bucket_sz)
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+4
+--- no_error_log
+[error]
+
+
+
+=== TEST 8: non-string keys
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local function log(...)
+                ngx.say(...)
+            end
+
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(2)
+
+            collectgarbage()
+
+            local tab1 = {1, 2}
+            local tab2 = {3, 4}
+
+            c:set(tab1, 32)
+            c:set(tab2, 56)
+            log("tab1: ", c:get(tab1))
+            log("tab2: ", c:get(tab2))
+
+            c:set(tab1, 32)
+            c:set(tab2, 56)
+            log("tab1: ", c:get(tab1))
+            log("tab2: ", c:get(tab2))
+
+            c:delete(tab1)
+            c:delete(tab2)
+            log("tab1: ", c:get(tab1))
+            log("tab2: ", c:get(tab2))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+tab1: 32
+tab2: 56
+tab1: 32
+tab2: 56
+tab1: nil
+tab2: nil
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 9: replace value
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(1)
+
+            c:set("dog", 32)
+            ngx.say("dog: ", c:get("dog"))
+
+            c:set("dog", 33)
+            ngx.say("dog: ", c:get("dog"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+dog: 33
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 10: replace value 2
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(1)
+
+            c:set("dog", 32, 1.0)
+            ngx.say("dog: ", c:get("dog"))
+
+            c:set("dog", 33, 0.3)
+            ngx.say("dog: ", c:get("dog"))
+
+            ngx.sleep(0.4)
+            ngx.say("dog: ", c:get("dog"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+dog: 33
+dog: nil33
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 11: replace value 3 (the old value has longer expire time)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(1)
+
+            c:set("dog", 32, 1.2)
+            c:set("dog", 33, 0.6)
+            ngx.sleep(0.2)
+            ngx.say("dog: ", c:get("dog"))
+
+            ngx.sleep(0.5)
+            ngx.say("dog: ", c:get("dog"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 33
+dog: nil33
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 12: replace value 4
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache.pureffi"
+            local c = lrucache.new(1)
+
+            c:set("dog", 32, 0.1)
+            ngx.sleep(0.2)
+
+            c:set("dog", 33)
+            ngx.sleep(0.2)
+            ngx.say("dog: ", c:get("dog"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 33
+
+--- no_error_log
+[error]

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/t/sanity.t

@@ -0,0 +1,250 @@
+# vim:set ft= ts=4 sw=4 et fdm=marker:
+
+use Test::Nginx::Socket::Lua;
+use Cwd qw(cwd);
+
+repeat_each(2);
+
+plan tests => repeat_each() * (blocks() * 3);
+
+#no_diff();
+#no_long_string();
+
+my $pwd = cwd();
+
+our $HttpConfig = <<"_EOC_";
+    lua_package_path "$pwd/lib/?.lua;$pwd/../lua-resty-core/lib/?.lua;;";
+    #init_by_lua '
+    #local v = require "jit.v"
+    #v.on("$Test::Nginx::Util::ErrLogFile")
+    #require "resty.core"
+    #';
+
+_EOC_
+
+no_long_string();
+run_tests();
+
+__DATA__
+
+=== TEST 1: sanity
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache"
+            local c = lrucache.new(2)
+
+            collectgarbage()
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            c:delete("dog")
+            c:delete("cat")
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+cat: 56
+dog: 32
+cat: 56
+dog: nil
+cat: nil
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 2: evict existing items
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache"
+            local c = lrucache.new(2)
+            if not c then
+               ngx.say("failed to init lrucace: ", err)
+               return
+            end
+
+            c:set("dog", 32)
+            c:set("cat", 56)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            c:set("bird", 76)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+            ngx.say("bird: ", c:get("bird"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+cat: 56
+dog: nil
+cat: 56
+bird: 76
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 3: evict existing items (reordered, get should also count)
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache"
+            local c = lrucache.new(2)
+            if not c then
+               ngx.say("failed to init lrucace: ", err)
+               return
+            end
+
+            c:set("cat", 56)
+            c:set("dog", 32)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+
+            c:set("bird", 76)
+            ngx.say("dog: ", c:get("dog"))
+            ngx.say("cat: ", c:get("cat"))
+            ngx.say("bird: ", c:get("bird"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+cat: 56
+dog: nil
+cat: 56
+bird: 76
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 4: ttl
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache"
+            local c = lrucache.new(1)
+
+            c:set("dog", 32, 0.5)
+            ngx.say("dog: ", c:get("dog"))
+
+            ngx.sleep(0.25)
+            ngx.say("dog: ", c:get("dog"))
+
+            ngx.sleep(0.26)
+            ngx.say("dog: ", c:get("dog"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+dog: 32
+dog: nil32
+
+--- no_error_log
+[error]
+
+
+
+=== TEST 5: ttl
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache"
+            local lim = 5
+            local c = lrucache.new(lim)
+            local n = 1000
+
+            for i = 1, n do
+                c:set("dog" .. i, i)
+                c:delete("dog" .. i, i)
+                c:set("dog" .. i, i)
+                local cnt = 0
+                for k, v in pairs(c.hasht) do
+                    cnt = cnt + 1
+                end
+                assert(cnt <= lim)
+            end
+
+            for i = 1, n do
+                local key = "dog" .. math.random(1, n)
+                c:get(key)
+            end
+
+            for i = 1, n do
+                local key = "dog" .. math.random(1, n)
+                c:get(key)
+                c:set("dog" .. i, i)
+
+                local cnt = 0
+                for k, v in pairs(c.hasht) do
+                    cnt = cnt + 1
+                end
+                assert(cnt <= lim)
+            end
+
+            ngx.say("ok")
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+ok
+
+--- no_error_log
+[error]
+--- timeout: 20
+
+
+
+=== TEST 6: replace value
+--- http_config eval: $::HttpConfig
+--- config
+    location = /t {
+        content_by_lua '
+            local lrucache = require "resty.lrucache"
+            local c = lrucache.new(1)
+
+            c:set("dog", 32)
+            ngx.say("dog: ", c:get("dog"))
+
+            c:set("dog", 33)
+            ngx.say("dog: ", c:get("dog"))
+        ';
+    }
+--- request
+    GET /t
+--- response_body
+dog: 32
+dog: 33
+
+--- no_error_log
+[error]
+

controllers/nginx-third-party/lua/vendor/lua-resty-lrucache/valgrind.suppress

@@ -0,0 +1,36 @@
+# Valgrind suppression file for LuaJIT 2.0.
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_event_process_init
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Param
+   epoll_ctl(event)
+   fun:epoll_ctl
+   fun:ngx_epoll_add_event
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Cond
+   fun:index
+   fun:expand_dynamic_string_token
+   fun:_dl_map_object
+   fun:map_doit
+   fun:_dl_catch_error
+   fun:do_preload
+   fun:dl_main
+   fun:_dl_sysdep_start
+   fun:_dl_start
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Param
+   epoll_ctl(event)
+   fun:epoll_ctl
+   fun:ngx_epoll_init
+   fun:ngx_event_process_init
+}