跳过后续的Github操作

Question

我有一组GitHub操作作业，我想在web查找结果上有条件地运行这些作业。然而，我不希望这些工作失败，我只是不想让它们运行。

我目前正在讨论的是这个问题，但它似乎不像预期的那样有效：

jobs:
  check-previous-build:
    uses: ./.github/workflows/check-previous-build.yml

  bundle-install:
    uses: ./.github/workflows/deps-bundle-install.yml
    secrets: inherit
    needs:
      - check-previous-build
    if: ${{ needs.check_previous_build.outputs.previous_build == 'true'}}

检查任务看起来如下( 200表示任务应该跳过)：

- name: Check Previous Build
        id: check_previous_build
        run: |
          sha=$(git show HEAD --format=%T -q)
          url=http://example.com/check?id=${sha}
          echo "Checking $url .."
          status_code=$(curl -s -o /dev/null -w "%{http_code}" $url)
          if [[ $status_code -ge 200 && $status_code -le 299 ]]; then
            echo -e "\x1B[32m✅ Build has previously completed  \x1B[0m"
            echo "previous_build=true" >> $GITHUB_OUTPUT
          fi
          echo "previous_build=false" >> $GITHUB_OUTPUT

我觉得needs.check_previous_build.outputs.previous_build逻辑中缺少了一些东西，但我不知道上面是什么。

Answer 1

您缺少一些额外的代码，这些代码是将步骤的输出作为作业输出所必需的。基于示例:定义作业的输出，您的check-previous-build.yml应该如下所示：

name: Check Previous Build

on:
  workflow_call:
    outputs:
      previous_build:
        description: "Status of the job"
        value: ${{ jobs.check-previous-build.outputs.previous_build }}

jobs:
    check-previous-build:
      runs-on: ubuntu-latest
      outputs:
        previous_build: ${{ steps.check-previous-build.outputs.previous_build }}
      steps:
      - name: Check Previous Build
        id: check-previous-build
        run: |
          url=http://example.com/
          status_code=$(curl -s -o /dev/null -w "%{http_code}" $url)
          if [[ $status_code -ge 200 && $status_code -le 299 ]]; then
            echo -e "\x1B[32m✅ Build has previously completed  \x1B[0m"
            echo "previous_build=success" >> $GITHUB_OUTPUT
          else
            echo "previous_build=fail" >> $GITHUB_OUTPUT
          fi

作业上的outputs对象需要显式定义并绑定到该作业中步骤的输出。可重用的工作流需要类似的处理，但需要使用workflow_call块中的workflow_call对象。见使用可重用工作流的输出。

这比较次要，但条件语句也需要一个else块，否则previous_build变量总是false (在本例中为fail )。

你在主要工作流程中有了正确的想法。我省略了${{ }}条件中的if语法，它被自动计算为表达式(关于表达)。

main-workflow.yml

name: Ed's Workflow

on:
  push:
  workflow_dispatch:

jobs:
  check-previous-build:
    uses: ./.github/workflows/check-previous-build.yml

  bundle-install:
    needs: check-previous-build
    runs-on: ubuntu-latest
    if: needs.check-previous-build.outputs.previous_build == 'success'
    steps:
      - name: deps-bundle-install
        run: echo "${{ needs.check-previous-build.outputs.previous_build }}"