YAML 锚定在 bitbucket 管道中

Question

我正在尝试编写 bitbucket 管道并使用 YAML 锚点来减少重复。

这就是我想做的例子：

---

definitions:
  steps:
    - step: &build-test-alpine
        image: php:7.4-alpine
        caches:
          - composer
        script:
          - apk add unzip curl
          - curl -sS https://getcomposer.org/installer | php -- --install-dir='/usr/local/bin' --filename='composer'
          - composer --no-ansi -n install
          - composer --no-ansi -n test

pipelines:
  custom:
    deploy:
      - step:
          name: Build and deploy application
          <<: *build-test-alpine
          script:
            - Some other command to execute

  default:
    - step:
        <<: *build-test-alpine
        name: PHP 7.4
    - step:
        <<: *build-test-alpine
        image: php:7.3-alpine
        name: PHP 7.3

...

当然这不起作用（请参阅自定义部署步骤）。人们不能定义另一个脚本项并期望它将其合并到锚脚本。有办法做到这一点吗？

Answer 1

过了相当长的一段时间，我对这个问题有了回应，但它并不像人们想象的那么好。

我期望的是，YAML 解析器能够以某种方式合并节列表项的元素并使之成为一个。这不起作用，也不受 YAML 标准支持。

我们可以做的是：

---

definitions:
  commonItems: &common
    apk add unzip curl &&
    curl -sS https://getcomposer.org/installer | php -- --install-dir='/usr/local/bin' --filename='composer' &&
    composer --no-ansi -n install &&
    composer --no-ansi -n test
  steps:
    - step: &build-test-alpine
        image: php:7.4-alpine
        caches:
          - composer
        script:
          - *common

pipelines:
  custom:
    deploy:
      - step:
          name: Build and deploy application
          <<: *build-test-alpine
          script:
            - *common
            - some other command to execute

  default:
    - step:
        <<: *build-test-alpine
        name: PHP 7.4
    - step:
        <<: *build-test-alpine
        image: php:7.3-alpine
        name: PHP 7.3

基本上每次我们设置一个步骤来合并锚点时，锚点元素覆盖锚点本身中的相同项目后指定的任何项目。因此，如果我们将常用命令转换为 YAML 锚点内的大字符串，那么我们就可以在我们想要的任何步骤中重复使用它，并且减少键入和重复，并且内容变得更具可读性。

Answer 2

您也许可以将

Some other command to execute

脚本放入 after-script 中。像这样的东西：

definitions:
  steps:
    - step: &build-test-alpine
        image: php:7.4-alpine
        caches:
          - composer
        script:
          - apk add unzip curl
          - curl -sS https://getcomposer.org/installer | php -- --install-dir='/usr/local/bin' --filename='composer'
          - composer --no-ansi -n install
          - composer --no-ansi -n test

pipelines:
  custom:
    deploy:
      - step:
          name: Build and deploy application
          <<: *build-test-alpine
          after-script:
            - Some other command to execute

  default:
    - step:
        <<: *build-test-alpine
        name: PHP 7.4
    - step:
        <<: *build-test-alpine
        image: php:7.3-alpine
        name: PHP 7.3

Answer 3

遵循基于已接受答案的想法，此修改似乎有效并允许多行脚本，例如：

definitions:
  caches:
    big-stuff-cache:
      key:
        files:
          - "src/big-stuff-manifest.json"
        path: "src/big_stuff"
  common-items:
    install-aws: &install-aws |
      # install aws cli for steps that need to run from a non-aws-cli container and need aws cli
      curl "https://awscli.amazonaws.com/awscli-exe-linux-aarch64.zip" -o "awscliv2.zip"
      unzip -q awscliv2.zip
      ./aws/install
      echo aws version $(aws --version)
  steps:
    - step: &build-and-upload-img
        name: 'ECR img deploy'
        caches:
          - node
        services:
          - docker
        script:
          - *install-aws
          - aws ecr dostuff
    - step: &deploy-lambda-layer
        name: 'layer deploy'
        caches:
          - big-stuff-cache
        script:
          - *install-aws
          - chmod +x ./pipelineScripts/deployLambdaLayer.sh
          - ./pipelineScripts/deployLambdaLayer.sh