nginx - Openresty: Make an http call with lua and return its parsed result -


my problem

i using openresty build simple server.

upon calling server, should make call different server, fetch json result, process , return parsed result.

the server should implemented in openresty reasons beyond scope if question.

code

error_log /dev/stdout info;  events {     worker_connections  14096; }  http {     access_log off;     lua_package_path ";;/usr/local/openresty/nginx/?.lua;";      server {         keepalive_requests 100000;         proxy_http_version 1.1;         keepalive_timeout 10;          location / {         content_by_lua_block {                 res = ngx.location.capture('http://localhost:8080/functions.json')                 ngx.say(res.body)             }         }          location /functions {             root /usr/local/openresty/nginx/html/;         }          listen 0.0.0.0:80 default_server;     } }

error log

2017/09/11 08:27:49 [error] 7#7: *1 open() "/usr/local/openresty/nginx/htmlhttp://localhost:8080/functions.json" failed (2: no such file or directory), client: 172.17.0.1, server: , request: "get / http/1.1", subrequest: "http://localhost:8080/functions.json", host: "localhost:8080"

my question

how can make http request within lua content block in nginx openresty?

capture allow capture internal nginx locations , not absolute urls

error_log /dev/stdout info;  events {     worker_connections  14096; }  http {     access_log off;     lua_package_path ";;/usr/local/openresty/nginx/?.lua;";      server {         keepalive_requests 100000;         proxy_http_version 1.1;         keepalive_timeout 10;          location / {         content_by_lua_block {                 res = ngx.location.capture('/functions.json')                 ngx.say(res.body)             }         }         location /functions.json {             proxy_pass http://localhost:8080/functions.json;         }          location /functions {             root /usr/local/openresty/nginx/html/;         }          listen 0.0.0.0:80 default_server;     } }

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