Merge pull request #16663 from dotboris/proxy-pass-log-level

Ensure that `http-proxy-middleware` logs requests when log level is set to `debug`

.changeset/twenty-insects-live.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-proxy-backend': patch
+---
+
+Ensure that `@backstage/plugin-proxy-backend` logs the requests that it proxies when log level is set to `debug`.

plugins/proxy-backend/src/service/router.ts

@@ -121,6 +121,11 @@ export function buildMiddleware(
 
   // Attach the logger to the proxy config
   fullConfig.logProvider = () => logger;
+  // http-proxy-middleware uses this log level to check if it should log the
+  // requests that it proxies. Setting this to the most verbose log level
+  // ensures that it always logs these requests. Our logger ends up deciding
+  // if the logs are displayed or not.
+  fullConfig.logLevel = 'debug';
 
   // Only return the allowed HTTP headers to not forward unwanted secret headers
   const requestHeaderAllowList = new Set<string>(