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Dynamic LB sync non-external backends only when necessary

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This commit is contained in:
Manuel Alejandro de Brito Fontes 2020-06-16 17:32:59 -04:00
parent 10dcf0db15
commit bcc3cfaa65
4 changed files with 91 additions and 6 deletions
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19
rootfs/etc/nginx/lua/tcp_udp_configuration.lua
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@ -9,6 +9,14 @@ function _M.get_backends_data()
return tcp_udp_configuration_data:get("backends")
end
function _M.get_raw_backends_last_synced_at()
local raw_backends_last_synced_at = tcp_udp_configuration_data:get("raw_backends_last_synced_at")
if raw_backends_last_synced_at == nil then
raw_backends_last_synced_at = 1
end
return raw_backends_last_synced_at
end
function _M.call()
local sock, err = ngx.req.socket(true)
if not sock then
@ -35,6 +43,17 @@ function _M.call()
ngx.say("error: ", err_conf)
return
end
ngx.update_time()
local raw_backends_last_synced_at = ngx.time()
success, err = tcp_udp_configuration_data:set("raw_backends_last_synced_at",
raw_backends_last_synced_at)
if not success then
ngx.log(ngx.ERR, "dynamic-configuration: error updating when backends sync, " ..
"new upstream peers waiting for force syncing: " .. tostring(err))
ngx.status = ngx.HTTP_BAD_REQUEST
return
end
end
return _M