Tekton: 调试为什么 when 子句被评估为 false

huangapple
go评论77阅读模式
英文:

Tekton: debugging why a when-clause is evaluated as false

问题

我创建了一个非常简单的任务，用于检查Git仓库上的当前分支是否是一个发布分支。

  1. apiVersion: tekton.dev/v1beta1
  2. kind: Task
  3. metadata:
  4.   name: check-git-remote-release-branches
  5. spec:
  6.   params:
  7.     - default: .
  8.       description: 根文件夹的位置
  9.       name: PATH_CONTEXT
  10.       type: string
  11.     - default: master
  12.       description: Git参考
  13.       name: GIT_REF
  14.       type: string
  15.   results:
  16.     - description: 如果是发布分支，则为true
  17.       name: is-release-branch
  18.   steps:
  19.     - image: 'registry.redhat.io/rhel8/nodejs-16:latest'
  20.       name: 检索远程发布分支
  21.       resources: {}
  22.       script: >
  23.         #!/bin/bash  
  25.         set -x
  27.         git config --global --add safe.directory '*'
  29.         git config --global user.email "git@48hg.ch" 
  31.         git config --global user.name "48hG - CICD" 
  33.         REMOTE_RELEASE_BRANCHES=($(git ls-remote --heads origin |  grep release/ | awk '{print $2}'))
  35.         echo "当前引用 $(params.GIT_REF)"
  37.         echo REMOTE_RELEASE_BRANCHES
  39.         echo "false" | tee $(results.is-release-branch.path)
  41.         for element in "${REMOTE_RELEASE_BRANCHES[@]}";  do
  42.             echo "$element"
  43.             if [[ $element == $(params.GIT_REF) ]]; then
  44.                 echo "true" | tee $(results.is-release-branch.path)
  45.             fi
  46.         done
  48.         cat $(results.is-release-branch.path)        
  49.       workingDir: /workspace/source/$(params.PATH_CONTEXT)
  50.   workspaces:
  51.     - name: source

在我的Tekton流水线中，我设置了一个任务，如果分支是发布分支，则在"result"上写入true。

  1.     - name: check-git-remote-release-branches
  2.           params:
  3.             - name: PATH_CONTEXT
  4.               value: $(params.context_path)
  5.             - name: GIT_REF
  6.               value: $(params.git-ref)
  7.           runAfter:
  8.             - continuous-integration-nodejs
  9.           taskRef:
  10.             kind: Task
  11.             name: check-git-remote-release-branches
  12.           workspaces:
  13.             - name: source
  14.               workspace: source-workspace

随后的任务使用此结果来评估一个"when"子句：

  1.     - name: release-increase-version
  2.       params:
  3.         - name: PATH_CONTEXT
  4.           value: $(params.context_path)
  5.       runAfter:
  6.         - check-git-remote-release-branches
  7.       taskRef:
  8.         kind: Task
  9.         name: nodejs-release-commit
  10.       when:
  11.         - input: $(tasks.check-git-remote-release-branches.results.is-release-branch)
  12.           operator: in
  13.           values:
  14.             - 'true'

即使在正确的文件中写入true，"when"子句也永远不起作用。我该如何调试这个问题？有没有办法检查为什么比较失败？

英文:

I created a very simple task that checks if the current branch on a git repo is a release branch

  1. apiVersion: tekton.dev/v1beta1
  2. kind: Task
  3. metadata:
  4.   name: check-git-remote-release-branches
  5. spec:
  6.   params:
  7.     - default: .
  8.       description: The location of the root folder
  9.       name: PATH_CONTEXT
  10.       type: string
  11.     - default: master
  12.       description: Git reference
  13.       name: GIT_REF
  14.       type: string
  15.   results:
  16.     - description: true if release branch
  17.       name: is-release-branch
  18.   steps:
  19.     - image: 'registry.redhat.io/rhel8/nodejs-16:latest'
  20.       name: retrieving-remote-release-branches
  21.       resources: {}
  22.       script: >
  23.         #!/bin/bash  
  25.         set -x
  27.         git config --global --add safe.directory '*'
  29.         git config --global user.email "git@48hg.ch" 
  31.         git config --global user.name "48hG - CICD" 
  33.         REMOTE_RELEASE_BRANCHES=($(git ls-remote --heads origin |  grep release/
  34.         | awk '{print $2}'))
  36.         echo "Current ref $(params.GIT_REF)"
  38.         echo REMOTE_RELEASE_BRANCHES
  40.         echo "false" | tee $(results.is-release-branch.path)
  42.         for element in "${REMOTE_RELEASE_BRANCHES[@]}";  do
  43.             echo "$element"
  44.             if [[ $element == $(params.GIT_REF) ]]; then
  45.                 echo "true" | tee $(results.is-release-branch.path)
  46.             fi
  47.         done
  49.         cat $(results.is-release-branch.path)
  50.       workingDir: /workspace/source/$(params.PATH_CONTEXT)
  51.   workspaces:
  52.     - name: source

In my Tekton pipeline i setup a task that writes on a "result" true if the branch is a release branch.

  1.     - name: check-git-remote-release-branches
  2.           params:
  3.             - name: PATH_CONTEXT
  4.               value: $(params.context_path)
  5.             - name: GIT_REF
  6.               value: $(params.git-ref)
  7.           runAfter:
  8.             - continuous-integration-nodejs
  9.           taskRef:
  10.             kind: Task
  11.             name: check-git-remote-release-branches
  12.           workspaces:
  13.             - name: source
  14.               workspace: source-workspace

A subsequent task uses this result to evaluate a when clause:

  1.     - name: release-increase-version
  2.       params:
  3.         - name: PATH_CONTEXT
  4.           value: $(params.context_path)
  5.       runAfter:
  6.         - check-git-remote-release-branches
  7.       taskRef:
  8.         kind: Task
  9.         name: nodejs-release-commit
  10.       when:
  11.         - input: $(tasks.check-git-remote-release-branches.results.is-release-branch)
  12.           operator: in
  13.           values:
  14.             - 'true'

the when clause does never work even if true is wrote in the right file.
How can i debug this? is there a way for me to check why the comparison fails?

答案1

得分: 2

我怀疑问题与结果生成方式有关：

  1. echo "true" | tee $(results.is-release-branch.path)

使用echo会生成true\n作为结果，这与when表达式不匹配。
我建议将任务定义更改为：

  1. printf "true" | tee $(results.is-release-branch.path)
英文:

I suspect the issue is related to how the result is produced:

  1. echo "true" | tee $(results.is-release-branch.path)

Using echo will produce true\n as a result, which does not match the when expression.
I would recommend changing the task definition to:

  1. printf "true" | tee $(results.is-release-branch.path)

huangapple
  • 本文由 发表于 2023年6月8日 01:31:36
  • 转载请务必保留本文链接：https://go.coder-hub.com/76425780.html
  • kubernetes
  • tekton
  • tekton-pipelines
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