基于更改路径的 GitLab CI 管道变量

Question

我有一个 monorepo，其中定义了一堆服务。我希望每个服务都有自己的管道，这样团队就可以独立工作。

这是我的管道代码示例：

.backend:
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
      changes:
        - "backend/**/*"
      when: always

backend-build:
  stage: build
  extends: .backend
  needs: []
  script:
    - echo "Compiling the backend code..."

backend-test:
  stage: test
  extends: .backend
  needs: ["backend-build"]
  script:
    - echo "Testing the backend code..."

我尝试添加规则并进行更改以在 .gitlab-ci.yml 的根部设置变量，如下所示：

rules:
  - changes:
      - "backend/**/*"
    variables:
      TEST_VAR: backend
  - changes:
      - "frontend/**/*"
    variables:
      TEST_VAR: frontend

include: '/templates/.example.yml'

但是我收到以下错误：

jobs rules config should implement a script: or a trigger: keyword

。

如何才能保持代码干燥，同时又引用多个

rules:changes:paths

的同一代码块？

Answer 1

我最终使用 Python 生成管道 YAML，创建一个工件，然后使用 YAML 触发子管道。这是我的 .gitlab-ci.yml：

stages:
  - triggers
  - triggered
  - build
  - test
  - deploy

generate-config-mr:
  stage: triggers
  image: python:3.11.5-alpine3.18
  script:
    - pip install -q requests Jinja2
    - python gitlab/build-pipeline.py $GENERATED_CONFIG_FILE # Tell the script where the write the config
  rules:
    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
  artifacts:
    paths:
      - $GENERATED_CONFIG_FILE

generate-config-default:
  stage: triggers
  # Using this image to get the git executable
  image: cicirello/pyaction:4.29.0
  script:
    - pip install -q requests Jinja2 GitPython
    - python gitlab/build-pipeline.py $GENERATED_CONFIG_FILE # Tell the script where the write the config
  artifacts:
    paths:
      - $GENERATED_CONFIG_FILE
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH

mr-child-pipeline:
  stage: triggered
  trigger:
    include:
      - artifact: child-pipeline.yml
        job: generate-config-mr
  rules:
    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'

default-child-pipeline:
  stage: triggered
  trigger:
    include:
      - artifact: child-pipeline.yml
        job: generate-config-default
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH

我使用 Jinja2 生成 YAML：

{% for cell in variables %}
{{ cell }}-build:
  stage: build
  image: mycustomimage
  script:
    - echo "Compiling the {{ cell }} code..."
  rules:
    - when: on_success

{{ cell }}-test:
  stage: test
  image: mycustomimage
  script:
    - echo "Testing the {{ cell }} code..."
  rules:
    - when: on_success
{% endfor %}