Awesome

NOTE! This project is not actively maintained. There are other ways to get this information from workflow (for example Github API in Python) that are likely easier to maintain and use.

If someone would like to take over maintenance of it I am happy to transfer it or you can make a fork of this project.

Get Workflow Origin action

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Context and motivation
Inputs and outputs
- Inputs
- Outputs
Examples

Context and motivation

Get Workflow Origin is an action that provides information about the pull requests that triggered the workflow for the pull_request and pull_request_review events or for the workflow_run event that is triggered by one of those events.

Often in those events you want to get more information about the source run than the one provided directly via GitHub context.

For example, you would like to know what is the merge commit generated by pull request in case the workflow is triggered by a pull request, or labels associated with the Pull Request.

This action provides outputs that give that information. You should add this action as first one in your workflow and then you will be able to use those outputs using 'needs' dependency.

The sourceRunId input should not be specified in case of the pull_request event, but it should be set to ${{ github.event.workflow_run.id }} in case of the workflow_run event.

Inputs and outputs

Inputs

Input	Required	Default	Comment
`token`	yes		The github token passed from `${{ secrets.GITHUB_TOKEN }}`
`sourceRunId`	no		In case of 'workflow_run' event it should be set to `${{ github.event.workflow_run.id }}`

Outputs

Output	No `sourceRunId` specified	The `sourceRunId` set to `${{ github.event.workflow_run.id }}`
`sourceHeadRepo`	Current repository. Format: `owner/repo`	Repository of the run that triggered this `workflow_run`. Format: `owner/repo`
`sourceHeadBranch`	Current branch.	Branch of the run that triggered this `workflow_run`. Might be forked repo, if it is a pull_request.
`sourceHeadSha`	Current commit SHA: `{{ github.sha }}`	Commit sha of the run that triggered this `workflow_run`.
`mergeCommitSha`	Merge commit SHA if PR-triggered event.	Merge commit SHA if PR-triggered event.
`targetCommitSha`	Target commit SHA (merge if present, otherwise source).	Target commit SHA (merge if present, otherwise source).
`pullRequestNumber`	Number of the associated Pull Request (if PR triggered)	Number of the associated Pull Request (if PR triggered)
`pullRequestLabels`	Stringified JSON array of Labels of the associated Pull Request (if PR triggered)	Stringified JSON array of Labels of the associated Pull Request (if PR triggered)
`targetBranch`	Target branch of the pull request or target branch for push	Target branch of the pull request or target branch for push
`sourceEvent`	Current event: `${{ github.event }}`	Event of the run that triggered this `workflow_run`

Examples

Workflow Run event

name: Get information
on:
  pull_request:
    branches: ['main']

jobs:
  get-info:
    name: "Get information about the source run"
    runs-on: ubuntu-latest
    outputs:
      sourceHeadRepo: ${{ steps.workflow-run-info.outputs.sourceHeadRepo }}
      sourceHeadBranch: ${{ steps.workflow-run-info.outputs.sourceHeadBranch }}
      sourceHeadSha: ${{ steps.workflow-run-info.outputs.sourceHeadSha }}
      mergeCommitSha: ${{ steps.workflow-run-info.outputs.mergeCommitSha }}
      targetCommitSha: ${{ steps.workflow-run-info.outputs.targetCommitSha }}
      pullRequestNumber: ${{ steps.workflow-run-info.outputs.pullRequestNumber }}
      pullRequestLabels: ${{ steps.workflow-run-info.outputs.pullRequestLabels }}
      targetBranch: ${{ steps.source-run-info.outputs.targetBranch }}
      sourceEvent: ${{ steps.workflow-run-info.outputs.sourceEvent }}
    steps:
      - name: "Get information about the current run"
        uses: potiuk/get-workflow-origin@v1_1
        id: workflow-run-info
        with:
          token: ${{ secrets.GITHUB_TOKEN }}

Workflow Run event

name: Build
on:
  workflow_run:
    workflows: ['CI']
    types: ['requested']

jobs:
  get-info:
    name: "Get information about the source run"
    runs-on: ubuntu-latest
    outputs:
      sourceHeadRepo: ${{ steps.source-run-info.outputs.sourceHeadRepo }}
      sourceHeadBranch: ${{ steps.source-run-info.outputs.sourceHeadBranch }}
      sourceHeadSha: ${{ steps.source-run-info.outputs.sourceHeadSha }}
      mergeCommitSha: ${{ steps.source-run-info.outputs.mergeCommitSha }}
      targetCommitSha: ${{ steps.source-run-info.outputs.targetCommitSha }}
      pullRequestNumber: ${{ steps.source-run-info.outputs.pullRequestNumber }}
      pullRequestLabels: ${{ steps.source-run-info.outputs.pullRequestLabels }}
      targetBranch: ${{ steps.source-run-info.outputs.targetBranch }}
      sourceEvent: ${{ steps.source-run-info.outputs.sourceEvent }}
    steps:
      - name: "Get information about the origin 'CI' run"
        uses: potiuk/get-workflow-origin@v1_1
        id: source-run-info
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          sourceRunId: ${{ github.event.workflow_run.id }}```

Development environment

It is highly recommended tu use pre commit. The pre-commits installed via pre-commit tool handle automatically linting (including automated fixes) as well as building and packaging Javascript index.js from the main.ts Typescript code, so you do not have to run it yourself.

License

MIT License covers the scripts and documentation in this project.