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Container for use in GitHub Actions for creating a CI job matrix for PHP packages.

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Container for creating a CI matrix for use in a GitHub Action

This repository provides a container to be consumed via a GitHub action that allows you to introspect a PHP project in order to build up a test matrix which can later be run by the laminas/laminas-continuous-integration-action.

It identifies jobs to run based on presence or absence of configuration files in the package. Currently, it identifies the following:

  • PHP versions to run unit tests against based on the php constraint in the composer.json file.
  • Whether to run against a "locked" set of dependencies based on the presence of a composer.lock file.
  • PHPUnit tests based on the presence of phpunit.xml.dist or phpunit.xml files.
  • phpcs checks based on the presence of phpcs.xml.dist or phpcs.xml files.
  • Psalm checks based on the presence of psalm.xml.dist or psalm.xml files.
  • phpbench benchmarks based on the presence of a phpbench.json.
  • Markdown documentation based on the presence of a mkdocs.yml and/or markdown files in the doc/book/ or doc/books/ trees.

Further, when triggered by a pull_request event, it determines what checks are necessary based on which files were affected.

Creating an action that uses the container

Create a Dockerfile-based GitHub Action that uses this as the base image:

FROM ghcr.io/laminas/laminas-ci-matrix-container:1

LABEL "com.github.actions.icon"="share-2"
LABEL "com.github.actions.color"="blue"

The container emits one output, "matrix". Workflows using actions built with this container should expose the output, so that it can later be consumed as a matrix in another job.

Standard usage via laminas/laminas-ci-matrix-action

jobs:
  matrix:
    name: Generate job matrix
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.matrix.outputs.matrix }}
    steps:
      - name: Gather CI configuration
        id: matrix
        uses: laminas/laminas-ci-matrix-action@v1

  qa:
    name: QA Checks
    needs: [matrix]
    runs-on: ${{ matrix.operatingSystem }}
    strategy:
      fail-fast: false
      matrix: ${{ fromJSON(needs.matrix.outputs.matrix) }}
    steps:
      - name: ${{ matrix.name }}
        uses: laminas/laminas-continuous-integration-action@v1
        with:
          job: ${{ matrix.job }}

Generally, you will use this as a dependency of a job that uses laminas/laminas-continuous-integration-action, as demonstrated in the above configuration.

Outputs

It spits out a single output, "matrix", which is a JSON string in the following format:

{
  "include": [
    {
      "name": "(string) Name of the check being run",
      "operatingSystem": "(string) Name of the OS the job should be run on (generally ubuntu-latest)",
      "action": "(string) GHA to run the step on; currently ignored, as GHA does not support dynamic action selection",
      "job": "(string) JSON object detailing the job (more on this later)",
    },
  ],
}

The "job" element is a string JSON object detailing the job to run. Note: it is not an object; it is a JSON string. It will have the following elements, but is not restricted to them:

{
  "php": "string PHP minor version to run against",
  "extensions": [
    "extension names to install; names are from the ondrej PHP repository, minus the php{VERSION}- prefix",
  ],
  "ini": [
    "php.ini directives, one per element; e.g. 'memory_limit=-1'",
  ],
  "dependencies": "dependencies to test against; one of lowest, locked, latest",
  "command": "command to run to perform the check",
}

Configuration

Packages consumed by this container can include a configuration file in its root, .laminas-ci.json, which can provide the following:

{
  "extensions": [
    "extension names to install",
  ],
  "ini": [
    "php.ini directives",
  ],
  "checks": [
    {
    },
  ],
  "exclude": [
    {
    }
  ]
}

The "checks" array should be in the same format as listed above for the outputs. Please remember that the job element MUST be a JSON string

The easiest way to exclude a single job is via the name parameter:

{
  "exclude": [
    {
      "name": "PHPUnit on PHP 8.0 with latest dependencies"
    }
  ]
}

Each item in the "exclude" array should be an object, with one or more of the keys listed in the "include" objects; when a job matches all elements specified in the "exclude" array, it will be excluded from runs.

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Container for use in GitHub Actions for creating a CI job matrix for PHP packages.

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