msbuild

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# Select a pool provider based off branch name. Anything with branch name containing 'release' must go into an -Svc pool, 
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# otherwise it should go into the "normal" pools. This separates out the queueing and billing of released branches.
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# Motivation: 
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#   Once a given branch of a repository's output has been officially "shipped" once, it is then considered to be COGS
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#   (Cost of goods sold) and should be moved to a servicing pool provider. This allows both separation of queueing
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#   (allowing release builds and main PR builds to not intefere with each other) and billing (required for COGS.
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#   Additionally, the pool provider name itself may be subject to change when the .NET Core Engineering Services 
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#   team needs to move resources around and create new and potentially differently-named pools. Using this template 
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#   file from an Arcade-ified repo helps guard against both having to update one's release/* branches and renaming.
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# How to use: 
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#  This yaml assumes your shipped product branches use the naming convention "release/..." (which many do).
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#  If we find alternate naming conventions in broad usage it can be added to the condition below.
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#
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#  First, import the template in an arcade-ified repo to pick up the variables, e.g.:
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#
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#  variables:
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#  - template: /eng/common/templates-official/variables/pool-providers.yml
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#
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#  ... then anywhere specifying the pool provider use the runtime variables,
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#      $(DncEngInternalBuildPool)
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#
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#        pool:
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#           name: $(DncEngInternalBuildPool)
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#           image: 1es-windows-2022
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variables:
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  # Coalesce the target and source branches so we know when a PR targets a release branch
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  # If these variables are somehow missing, fall back to main (tends to have more capacity)
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  # Any new -Svc alternative pools should have variables added here to allow for splitting work
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  - name: DncEngInternalBuildPool
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    value: $[
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        replace(
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          replace(
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            eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'),
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            True,
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            'NetCore1ESPool-Svc-Internal'
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          ),
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          False,
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          'NetCore1ESPool-Internal'
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        )
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      ]