Repository Dispatch

A GitHub action to create a repository dispatch event.

Usage

Dispatch an event to the current repository.

      - name: Repository Dispatch
        uses: peter-evans/repository-dispatch@v3
        with:
          event-type: my-event

Dispatch an event to a remote repository using a repo scoped Personal Access Token (PAT).

      - name: Repository Dispatch
        uses: peter-evans/repository-dispatch@v3
        with:
          token: ${{ secrets.PAT }}
          repository: username/my-repo
          event-type: my-event

Action inputs

Name	Description	Default
`token`	`GITHUB_TOKEN` (permissions `contents: write`) or a `repo` scoped Personal Access Token (PAT). See token for further details.	`GITHUB_TOKEN`
`repository`	The full name of the repository to send the dispatch.	`github.repository` (current repository)
`event-type`	(required) A custom webhook event name.
`client-payload`	JSON payload with extra information about the webhook event that your action or workflow may use.	`{}`

Token

This action creates repository_dispatch events. The default GITHUB_TOKEN token can only be used if you are dispatching the same repository that the workflow is executing in.

To dispatch to a remote repository you must create a Personal Access Token (PAT) with the repo scope and store it as a secret. If you will be dispatching to a public repository then you can use the more limited public_repo scope.

You can also use a fine-grained personal access token (beta). It needs the following permissions on the target repositories:

contents: read & write
metadata: read only (automatically selected when selecting the contents permission)

Example

Here is an example setting all of the input parameters.

      - name: Repository Dispatch
        uses: peter-evans/repository-dispatch@v3
        with:
          token: ${{ secrets.PAT }}
          repository: username/my-repo
          event-type: my-event
          client-payload: '{"ref": "${{ github.ref }}", "sha": "${{ github.sha }}"}'

Here is an example on: repository_dispatch workflow to receive the event. Note that repository dispatch events will only trigger a workflow run if the workflow is committed to the default branch.

name: Repository Dispatch
on:
  repository_dispatch:
    types: [my-event]
jobs:
  myEvent:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          ref: ${{ github.event.client_payload.ref }}
      - run: echo ${{ github.event.client_payload.sha }}

Dispatch to multiple repositories

You can dispatch to multiple repositories by using a matrix strategy. In the following example, after the build job succeeds, an event is dispatched to three different repositories.

jobs:
  build:
    # Main workflow job that builds, tests, etc.

  dispatch:
    needs: build
    strategy:
      matrix:
        repo: ['my-org/repo1', 'my-org/repo2', 'my-org/repo3']
    runs-on: ubuntu-latest
    steps:
      - name: Repository Dispatch
        uses: peter-evans/repository-dispatch@v3
        with:
          token: ${{ secrets.PAT }}
          repository: ${{ matrix.repo }}
          event-type: my-event

Client payload

The GitHub API allows a maximum of 10 top-level properties in the client-payload JSON. If you use more than that you will see an error message like the following.

No more than 10 properties are allowed; 14 were supplied.

For example, this payload will fail because it has more than 10 top-level properties.

client-payload: ${{ toJson(github) }}

To solve this you can simply wrap the payload in a single top-level property. The following payload will succeed.

client-payload: '{"github": ${{ toJson(github) }}}'

Additionally, there is a limitation on the total data size of the client-payload. A very large payload may result in a client_payload is too large error.

Multiline

A multiline client-payload can be set directly in YAML, as in the following example.

      - name: Repository Dispatch
        uses: peter-evans/repository-dispatch@v3
        with:
          token: ${{ secrets.PAT }}
          repository: username/my-repo
          event-type: my-event
          client-payload: |-
            {
              "repo": {
                "name": "${{ github.repository }}",
                "branch": "${{ needs.build_cfg.outputs.REPO_BRANCH }}",
                "tag": "${{ needs.build_cfg.outputs.REPO_TAG }}"
              },
              "deployment": {
                "project": "${{ env.MY_PROJECT }}",
                "container": "${{ env.MY_CONTAINER }}",
                "deploy_msg": "${{ env.SLACK_DEPLOY_MSG }}",
              }
            }

License

MIT

License

metacore-games/repository-dispatch

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