Is it possible to conditionally set the artifact name in my Azure DevOps build pipeline "publish artifact" task?

Is it possible to conditionally set the artifact name in my Azure DevOps build pipeline “publish artifact” task?

I am afraid there is no such out of box way to do that. If you want to conditionally set the artifact name, we have to use the nested variables in the pipeline.

However, At this moment, the value of nested variables (like $(CustomArtifactName_$(Build.SourceBranchName))) are not yet supported in the build pipelines.

As workaround, you could add a Run Inline Powershell task to set the variable based on the input pipeline variables.

In my side, I use Build_SourceBranchName as input pipeline variables. Then I add following scripts in the Inline Powershell task:

- task: InlinePowershell@1
  displayName: 'Inline Powershell'
  inputs:
    Script:

     $branch = $Env:Build_SourceBranchName

     if ($branch -eq "TestA5")
     {
       Write-Host "##vso[task.setvariable variable=CustomArtifactName]Red"
     }
     else
     {
       Write-Host "##vso[task.setvariable variable=CustomArtifactName]Blue"
     }

Then in the Publish Build Artifacts task, I set the ArtifactName with drop-$(CustomArtifactName)

- task: PublishBuildArtifacts@1
  displayName: 'Publish Artifact: drop'
  inputs:
    ArtifactName: 'drop-$(CustomArtifactName)'

Hope this helps.