This GitHub Action automatically generates and updates Structurizr diagrams on pull requests. It's designed to simplify the process of keeping architecture diagrams up-to-date with the latest changes in your codebase.

-> See this PR for a demo.

Before you use this action, make sure you have:

• A GitHub repository.
• A workspace.dsl file in your repository for Structurizr.

To use this action in your workflow, follow these steps:

1. Set up the workflow: Create a .github/workflows directory in your repository if it doesn't exist.
2. Create a workflow file: Inside the .github/workflows directory, create a new file (e.g., structurizr-diagrams-update.yml) and add the following content:

name: Update Structurizr Diagrams

on:
    pull_request:
        paths:
        - 'docs/workspace.dsl' # This setting will have the action trigger only if certain file changes. Set the location of your DSL.

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
    update-diagrams:
        runs-on: ubuntu-latest
        container: ghcr.io/sebastienfi/structurizr-cli-with-bonus:latest
        permissions: 
          contents: write # Allow to work with the contents of the repository, including git push.
        steps:
        - uses: sebastienfi/structurizr-gen-images@v1
          with:
            repo-token: ${{ secrets.GITHUB_TOKEN }} # This token will be used by the action to perform git pull, git push, pr read, pr comment, pr comment edit, pr comment reaction.
            workspace-path: 'docs/workspace.dsl' # This setting will have the action generate images from this DSL. Set the location of your DSL.
            output-path: 'docs/diagrams/' # The output folder for generated images.

3. Commit the workflow to main and create a PR which include a change in your DSL file.
4. The action will commit the generated images to your Pr's branch.

This action accepts the following inputs:

• workspace-path: Path to the workspace.dsl file.
  • Required: Yes
  • Default: docs/workspace.dsl

This action does not produces any output.

• Ensure that the workspace.dsl file is correctly set up and located in the specified path.
• The action will check for changes in the diagram images and update them if necessary.
• Generated diagrams are committed and pushed to the same branch that initiated the pull request. Of course, if your diagram does not change, there will be no commit.

Contributions to this action are welcome. Please ensure that your pull requests are well-described and adhere to the project's coding standards.