how do I specify authentication

[rwsdwatson]

I don't see how this action authenticates against the Azdo project.
If i just add it to a pipeline it fails with :-

Error: Got code 203, URL: https://dev.azure.com/git/git/_apis/build/builds?definitions=1258&statusFilter=completed&resultFilter=succeeded&reasonFilter=all&$top=1, message: Non-Authoritative Information

[rimrul]

I don't see how this action authenticates 

I don't think it does. But we do have some azure piplines authentication code elsewhere that we could probably port over here.

[dscho]

Got code 203

That does not exactly say that authentication is required...

I don't see how this action authenticates

I don't think it does.

Indeed. This Action currently only supports public Azure Pipelines.

But we do have some azure piplines authentication code elsewhere that we could probably port over here.

I suspect that it might be a bit more complicated than that, as it seems that Azure Pipelines is moving away from Personal Access Tokens (indeed, the documentation currently only mentions OAuth 2.0 as way to authenticate).

Maybe we can integrate with https://github.com/azure/login instead of rolling our own authentication here? Then you should be able to use Managed Identities, which are quite safe from a security perspective because you can reduce the scope quite stringently.

[dscho]

https://dev.azure.com/git/git/_apis/build/builds?definitions=1258&statusFilter=completed&resultFilter=succeeded&reasonFilter=all&$top=1

Are you sure that you specified the correct Azure DevOps project/repository? I ask because the git/git project has no Azure Pipeline with ID 1258:

[rimrul]

https://dev.azure.com/git/git/_apis/build/builds?definitions=1258&statusFilter=completed&resultFilter=succeeded&reasonFilter=all&$top=1

Are you sure that you specified the correct Azure DevOps project/repository? I ask because the git/git project has no Azure Pipeline with ID 1258:

That seems to be an artefact from annoymization.

[rimrul]

Maybe we can integrate with https://github.com/azure/login instead of rolling our own authentication here?

That's only a wrapper around Azure CLI and Azure Powershell. I think neither of those leaves a usable session for us, but there is the Azure Identity client library for JavaScript

[rwsdwatson]

https://dev.azure.com/git/git/_apis/build/builds?definitions=1258&statusFilter=completed&resultFilter=succeeded&reasonFilter=all&$top=1

Are you sure that you specified the correct Azure DevOps project/repository? I ask because the git/git project has no Azure Pipeline with ID 1258:

Sorry I edited the url to hide my private org / project.