NGINX: Remove inline Lua from template. (#11806)

rootfs/etc/nginx/lua/ngx_conf_init.lua

@@ -0,0 +1,53 @@
+local cjson = require("cjson.safe")
+
+collectgarbage("collect")
+local f = io.open("/etc/nginx/lua/cfg.json", "r")
+local content = f:read("*a")
+f:close()
+local configfile = cjson.decode(content)
+
+local luaconfig = ngx.shared.luaconfig
+luaconfig:set("enablemetrics", configfile.enable_metrics)
+luaconfig:set("use_forwarded_headers", configfile.use_forwarded_headers)
+-- init modules
+local ok, res
+ok, res = pcall(require, "lua_ingress")
+if not ok then
+  error("require failed: " .. tostring(res))
+else
+  lua_ingress = res
+  lua_ingress.set_config(configfile)
+end
+ok, res = pcall(require, "configuration")
+if not ok then
+  error("require failed: " .. tostring(res))
+else
+  configuration = res
+  if not configfile.listen_ports.status_port then
+    error("required status port not found")
+  end
+  configuration.prohibited_localhost_port = configfile.listen_ports.status_port
+end
+ok, res = pcall(require, "balancer")
+if not ok then
+  error("require failed: " .. tostring(res))
+else
+  balancer = res
+end
+if configfile.enable_metrics then
+    ok, res = pcall(require, "monitor")
+    if not ok then
+        error("require failed: " .. tostring(res))
+    else
+        monitor = res
+    end
+end
+ok, res = pcall(require, "certificate")
+if not ok then
+  error("require failed: " .. tostring(res))
+else
+  certificate = res
+  if configfile.enable_ocsp then
+    certificate.is_ocsp_stapling_enabled = configfile.enable_ocsp
+  end
+end