Gitlab Plugin for Pipeline | HTTP Error 415

[ESmithaaS]

The Gitlab Plugin is not able to run pipelines. I'm getting HTTP error 415 when I attempt run specific jobs or the complete pipeline.

[1] 2023-12-19T05:28:52.950Z auth info Issuing token for user:default/edwin smith, with entities user:default/edwin smith type=plugin component=token-factory
[1] 2023-12-19T05:28:52.956Z backstage info ::ffff:192.168.224.1 - - [19/Dec/2023:05:28:52 +0000] "GET /api/auth/gitlab/refresh?optional&scope=read_user%20read_api%20read_repository&env=development HTTP/1.1" 200 892 "http://localhost:3000/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" type=incomingRequest
[1] 2023-12-19T05:28:52.979Z gitlab debug [HPM] Rewriting path from "/api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipeline?ref=main" to "/projects/easdevops%2Fveecodeplugindemo/pipeline?ref=main" type=plugin
[1] 2023-12-19T05:28:52.980Z gitlab debug [HPM] POST /api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipeline?ref=main ~> https://gitlab.com/api/v4 type=plugin
[1] 2023-12-19T05:28:53.115Z backstage info ::ffff:192.168.224.1 - - [19/Dec/2023:05:28:53 +0000] "POST /api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipeline?ref=main HTTP/1.1" 415 68 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" type=incomingRequest

[1] 2023-12-19T05:35:06.417Z gitlab debug [HPM] Rewriting path from "/api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipeline?ref=main" to "/projects/easdevops%2Fveecodeplugindemo/pipeline?ref=main" type=plugin
[1] 2023-12-19T05:35:06.417Z gitlab debug [HPM] POST /api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipeline?ref=main ~> https://gitlab.com/api/v4 type=plugin
[1] 2023-12-19T05:35:06.539Z backstage info ::ffff:192.168.224.1 - - [19/Dec/2023:05:35:06 +0000] "POST /api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipeline?ref=main HTTP/1.1" 415 68 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" type=incomingRequest
[1] 2023-12-19T05:35:06.549Z gitlab debug [HPM] Rewriting path from "/api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipelines?ref=main" to "/projects/easdevops%2Fveecodeplugindemo/pipelines?ref=main" type=plugin
[1] 2023-12-19T05:35:06.549Z gitlab debug [HPM] GET /api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipelines?ref=main ~> https://gitlab.com/api/v4 type=plugin
[1] 2023-12-19T05:35:06.725Z backstage info ::ffff:192.168.224.1 - - [19/Dec/2023:05:35:06 +0000] "GET /api/proxy/gitlab/api/projects/easdevops%2Fveecodeplugindemo/pipelines?ref=main HTTP/1.1" 200 1594 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" type=incomingRequest

The successfully pipeline run shown in the screenshot are from me running the pipeline directly from within Gitlab.

Below is the proxy config

According to the definition of the error from MDN Web Docs, the 415 would suggest an issue with the payload format.

It looks the like the request is being sent in plain-text

[ESmithaaS]

Update: I modified my proxy spec in the app-config to include Content-Type: application/json in the allowedHeaders.

I no longer get a HTTP 415 error. I now get a HTTP 403. It looks like the "api" scope is missing from the array of scopes.

plugins/gitlab-pipelines/src/api.ts Line 96

[ValberJunior]

Hello friend 👋

We managed to work around the error.
There was probably an update from gitlab, but it's working normally now.
Could you test it?