Containerized varnish reverse proxy server for MediaWiki

This repo contains Docker container to run the Varnish reverse proxy server.

It is a part of Containerized Mediawiki install project.

Settings

• PROXY_BACKEND_{name} defines backend using format 'host:port'. Generally backend name should be the same as container name. Example: PROXY_BACKEND_web=web:80.
• PROXY_RESTBASE_BACKEND defines backend for the RESTBase service.
• PROXY_RESTBASE_URL a regular expression defines uri that should be proxied to the RESTBase service. Example: PROXY_RESTBASE_URL=^/api/rest_v1
• PROXY_RESTBASE_SUB a string that replaces the regular expression from PROXY_RESTBASE_URL variable. String {backend_hint} will be replaced by corresponded wiki backend name. Example: PROXY_RESTBASE_SUB=/{backend_hint}/v1

Examples

The environment variables

- PROXY_BACKEND_web=web:80
- PROXY_BACKEND_restbase=restbase:7231
- PROXY_RESTBASE_BACKEND=restbase
- PROXY_RESTBASE_URL=^/api/rest_v1
- PROXY_RESTBASE_SUB=/{backend_hint}/v1

creates config contains:

vcl 4.0;
# set web backends
backend restbase {
    .host = "restbase";
    .port = "7231";
}

backend web {
    .host = "web";
    .port = "80";
}

sub vcl_recv {
        set req.http.X-Forwarded-For = client.ip;
        set req.backend_hint = web;

        if (req.url ~ "^/api/rest_v1") {
            set req.url = regsub(req.url, "^/api/rest_v1", regsub("/{backend_hint}/v1", "\{backend_hint\}", req.backend_hint));
            set req.backend_hint = restbase;
            set req.hash_ignore_busy = true;
            return (pass);
        }
...