GitHub Actions

To simplify setting up DCM on GitHub, you can use two dedicated GitHub actions: setup-dcm and dcm-action.

setup-dcm

setup-dcm installs and sets up DCM for use in GitHub Actions.

Usage example

name: DCM

on:
  pull_request:
    branches: [main]
  push:
    branches: [main]

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Dart and Flutter
        uses: subosito/flutter-action@v2

      - name: Install dependencies
        run: flutter pub get

      - name: Install DCM
        uses: CQLabs/setup-dcm@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}

      - name: Run DCM
        run: dcm analyze --ci-key="${{ secrets.DCM_CI_KEY }}" --email="${{ secrets.DCM_EMAIL }}" lib

info

Even though DCM is no longer an analyzer plugin, it's important to install dependencies via pub get before running dcm checks.

Alternatively, you can install DCM on your CI directly

- name: Install DCM
    run: |
      sudo apt-get update
      wget -qO- https://dcm.dev/pgp-key.public | sudo gpg --dearmor -o /usr/share/keyrings/dcm.gpg
      echo 'deb [signed-by=/usr/share/keyrings/dcm.gpg arch=amd64] https://dcm.dev/debian stable main' | sudo tee /etc/apt/sources.list.d/dart_stable.list
      sudo apt-get update
      sudo apt-get install dcm

Inputs

The action takes the following inputs:

• github_token: Used to get the latest DCM version from GitHub releases (required).
• version: Which DCM version to setup:
  • A specific DCM version (ex. 1.6.0)
  • or latest (default)

Outputs

The action produces the following output:

• dcm-version: The version of the DCM executable that was installed.

dcm-action

dcm-action runs DCM checks in GitHub Actions. It can also add a comment with dcm checks status to your Pull Requests.

Usage example (combined with setup-dcm)

name: DCM

on:
  pull_request:
    branches: [main]
  push:
    branches: [main]

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Dart and Flutter
        uses: subosito/flutter-action@v2

      - name: Install dependencies
        run: flutter pub get

      - name: Install DCM
        uses: CQLabs/setup-dcm@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}

      - name: Run DCM
        uses: CQLabs/dcm-action@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          ci_key: ${{ secrets.DCM_CI_KEY }}
          email: ${{ secrets.DCM_EMAIL }}
          folders: lib

Inputs

The action takes the following inputs:

Name	Required	Description	Default
github_token	☑️	Required to post a report on GitHub. Note: the secret GITHUB_TOKEN is already provided by GitHub and you don't have to set it up yourself.
github_pat	Required if you had private GitHub repository in the package dependencies	Personal access token must access to repo and read:user scopes
ci_key	☑️	License key to run on CI server.
email	☑️	Email used to purchase the license.
folders		List of folders and files (separated by commas) to scan.	[lib]
pull_request_comment		Publish report overview directly into your pull request.	true
package_name		Package name to differentiate the report. Set when running several DCM runs at once.
fatal_performance		Treat performance level issues as fatal.	true
fatal_style		Treat style level issues as fatal.	true
fatal_warnings		Treat warning level issues as fatal.	true

Outputs

Action console

PR summary

PR comment