如何根据PR依赖升级标志条件触发对应GitHub Actions工作流

核心思路是通过PR的标签或标题关键词作为判断依据，让两个工作流分别在符合条件时触发，以下是两种常用实现方案：

方案一：基于PR标签判断 #

给需要执行依赖升级的PR打上特定标签（比如dependency-upgrade），然后修改两个工作流的触发条件：

修改后的workflow1（仅带指定标签时运行） #

name: workflow1
on:
  pull_request:
    branches:
      - staging
    types: [opened, synchronize, reopened]
    labels:
      - dependency-upgrade

jobs:
  plan:
    name: "Terragrunt Plan (Dependency Upgrade)"
    runs-on: ubuntu-20.04
    defaults:
      run:
        working-directory: ${{ env.TERRAFORM_WORKING_DIR }}
    steps:
      - name: 'Checkout'
        uses: actions/checkout@v2

      - name: Terragrunt Init
        id: init
        run: terragrunt init -upgrade  # 注意：原代码的-ugrade是拼写错误，已修正

修改后的workflow2（不带指定标签时运行） #

name: workflow2
on:
  pull_request:
    branches:
      - staging
    types: [opened, synchronize, reopened]
    labels:
      - '!dependency-upgrade'

jobs:
  plan:
    name: "Terragrunt Plan (Regular)"
    runs-on: ubuntu-20.04
    defaults:
      run:
        working-directory: ${{ env.TERRAFORM_WORKING_DIR }}
    steps:
      - name: 'Checkout'
        uses: actions/checkout@v2

      - name: Terragrunt Init
        id: init
        run: terragrunt init -lockfile=readonly

方案二：基于PR标题关键词判断 #

如果不想手动打标签，可通过PR标题中的特定关键词（比如[DEP-UPGRADE]）判断，无需修改on触发规则，只需在job级别添加if条件：

修改后的workflow1（标题含关键词时运行） #

name: workflow1
on:
  pull_request:
    branches:
      - staging

jobs:
  plan:
    if: contains(github.event.pull_request.title, '[DEP-UPGRADE]')
    name: "Terragrunt Plan (Dependency Upgrade)"
    runs-on: ubuntu-20.04
    defaults:
      run:
        working-directory: ${{ env.TERRAFORM_WORKING_DIR }}
    steps:
      - name: 'Checkout'
        uses: actions/checkout@v2

      - name: Terragrunt Init
        id: init
        run: terragrunt init -upgrade  # 修正拼写错误

修改后的workflow2（标题不含关键词时运行） #

name: workflow2
on:
  pull_request:
    branches:
      - staging

jobs:
  plan:
    if: !contains(github.event.pull_request.title, '[DEP-UPGRADE]')
    name: "Terragrunt Plan (Regular)"
    runs-on: ubuntu-20.04
    defaults:
      run:
        working-directory: ${{ env.TERRAFORM_WORKING_DIR }}
    steps:
      - name: 'Checkout'
        uses: actions/checkout@v2

      - name: Terragrunt Init
        id: init
        run: terragrunt init -lockfile=readonly

注意事项 #

1. 方案一中的types: [opened, synchronize, reopened]确保PR更新、重新打开时也能触发工作流，可根据需求调整。
2. 两种方案二选一即可：标签方案更直观易管理，标题关键词方案无需手动操作，适合自动化场景。

内容的提问来源于stack exchange，提问作者dcloud