是否可以在资源的 ref 属性中使用变量:Azure DevOps YAML 的存储库? [英] Is it possible to use a variable in the ref property of resources:repository for Azure DevOps YAML?

问题描述

我有两个 AzureDevOps Git 分支:

I have two AzureDevOps Git branches:

master
feature/mybranch

我在 yaml 中定义了一个多阶段构建管道，其中一些步骤被模板化为单独的 .yml 文件.

I have a multi-stage build pipeline defined in yaml, where some of the steps are templated into separate .yml files.

在我的外部 azure-pipelines.yml 中，我引用了我的模板 .yml 所在的存储库:

In my outer azure-pipelines.yml I reference a repository where my template .yml's live:

resources:
  repositories:
    - repository: templates
      type: git
      name: MyProject/MyRepo

当我在master"分支中构建时，一切都很好，因为默认情况下，存储库将在 refs/heads/master 中查找.

when I'm building in the 'master' branch everything is good as by default the repository will look in refs/heads/master.

当我在功能分支中工作并且我想测试我的模板 .yml 文件的实验性更改时，我不希望它从主分支获取它们，我希望它使用来自分支的文件我在工作.

when I'm working in the feature branch and I want to test experimental changes to my template .yml files, I don't want it to fetch them from the master branch, I want it to use the files from the branch I am working in.

以下工作并允许我这样做:

The following works and allows me to do this:

resources:
  repositories:
    - repository: templates
      type: git
      name: MyProject/MyRepo
      ref: refs/heads/feature/mybranch

但是，当我将其合并回 master 时，我显然不希望 'ref:' 仍然指向功能分支，因此我想使用变量动态生成 'ref:' 的值.

However, when I merge this back to master, I obviously don't want 'ref:' still pointing at the feature branch, so I'd like to generate the value of 'ref:' dynamically with a variable.

我试过使用 ref: $(Build.SourceBranch) 其中 $(Build.SourceBranch) 应该扩展到 'refs/heads/feature/mybranch'

I've tried using ref: $(Build.SourceBranch) where $(Build.SourceBranch) should expand to 'refs/heads/feature/mybranch'

但它不起作用.错误:

62638: "/azure-pipelines.yml: Could not get the latest source version for repository MySolution hosted on Azure Repos using ref refs/heads/$(Build.SourceBranch)."

推荐答案

不要在资源中引用 repo，而是使用这里描述的内联结帐

Instead of referencing the repo in resources, use inline checkout as described here

https://docs.microsoft.com/en-us/azure/devops/pipelines/repos/multi-repo-checkout?view=azure-devops#checking-out-a-specific-参考

- checkout: git://MyProject/MyRepo@features/tools

这个 yaml 元素允许使用使用变量、参数的模板表达式，例如

And this yaml element allows use of template expressions using variables, parameters e.g.

- checkout: git://$(System.TeamProject)/$(repoName)@${{ variables.branchRef }}

或

 - checkout: git://$(System.TeamProject)/$(repoName)@${{ parameters.branchRef }}

你可以动态改变它

或者另一种选择是使用脚本任务如下

Or the other alternative is use script task as below

- script: |
      # note checkout: git://$(System.TeamProject)/${{ parameters.repoName }}@${{ parameters.repoRef }} this does not work if this task is run multiple times in same pipeline
      # see here for more details :https://developercommunity.visualstudio.com/t/checkout-fails-with-an-error-occurred-while-loadin/1005991#T-N1270459
      repoDir=$(Agent.BuildDirectory)/${{ parameters.repoName }}
      /bin/rm -rf $repoDir
      url_with_token=$(echo $(System.CollectionUri) | sed -e "s/https:///https://$(System.AccessToken)@/g")
      git clone $url_with_token/$(System.TeamProject)/_git/${{ parameters.repoName }} $repoDir
      cd $repoDir
      git fetch origin '${{ parameters.repoRef }}':'localBranch'
      git checkout localBranch
    name: clone_script
    displayName: Checkout using script ${{ parameters.repoName }}@${{ parameters.repoRef }}
    

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