Create a comment on a pull request, if it exists update that comment. This library runs with GitHub Actions. If you feel that the example grammar below is not friendly enough, we recommend reading this page first.

You need to add permissions for this tool.

permissions:
  pull-requests: write

uses: marocchino/sticky-pull-request-comment@v2
with:
  message: |
    Release ${{ github.sha }} to <https://pr-${{ github.event.number }}.example.com>

In some cases, different actions may require different comments. The header allows you to maintain comments independently.

release:
  ...
  - uses: marocchino/sticky-pull-request-comment@v2
    with:
      header: release
      message: |
        Release ${{ github.sha }} to <https://pr-${{ github.event.number }}.example.com>

test:
  ...
  - name: Run Test
    run: |
      EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
      echo "test_result<<$EOF" >> "$GITHUB_ENV"
      rake test >> "$GITHUB_ENV"
      echo "$EOF" >> "$GITHUB_ENV"
  - uses: marocchino/sticky-pull-request-comment@v2
    with:
      header: test
      message: |
        ```
        ${{ env.test_result }}
        ```

test:
  ...
  - name: Run Test
    run: |
      EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
      echo "test_result<<$EOF" >> "$GITHUB_ENV"
      rake test >> "$GITHUB_ENV"
      echo "$EOF" >> "$GITHUB_ENV"
  - uses: marocchino/sticky-pull-request-comment@v2
    with:
      append: true
      message: |
        Test with ${{ github.sha }}.
        ```
        ${{ env.test_result }}
        ```

If for some reason, triggering on pr is not possible, you can use push.

- uses: jwalton/gh-find-current-pr@v1
  id: finder
- uses: marocchino/sticky-pull-request-comment@v2
  with:
    number: ${{ steps.finder.outputs.pr }}
    message: |
      Test ${{ github.sha }} ended successfully.
      This message is from a push.

uses: marocchino/sticky-pull-request-comment@v2
with:
  path: path-to-comment-contents.txt

uses: marocchino/sticky-pull-request-comment@v2
with:
  recreate: true
  message: |
    Release ${{ github.sha }} to <https://pr-${{ github.event.number }}.example.com>

uses: marocchino/sticky-pull-request-comment@v2
with:
  header: <same-header-as-the-step-that-added-the-comment>
  delete: true

uses: marocchino/sticky-pull-request-comment@v2
with:
  hide_and_recreate: true
  hide_classify: "OUTDATED"
  message: |
    Release ${{ github.sha }} to <https://pr-${{ github.event.number }}.example.com>

uses: marocchino/sticky-pull-request-comment@v2
with:
  header: <same-header-as-the-step-that-added-the-comment>
  hide: true
  hide_classify: "OUTDATED"

This tool requires write permission, and that message means the requester does not have enough permission. Recently, GitHub sets permissions conservatively for newly created repositories. If it's a newly created repository, check your Settings > Actions > General > Workflow permissions, and make sure to enable read and write permissions.

Then, you can specify permissions for the job like this:

permissions:
  pull-requests: write

If your repository is private, setting this setting removes all default permissions on your workflow, so for the actions/checkout step to work which is highly common, you will also need the contents permissions set. Otherwise you will get an error such as "fatal: repository *** not found"

permissions:
  pull-requests: write
  contents: read

For more detailed information about permissions, you can read from the link below: https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs

Optional Header to determine if the comment should be updated (it is not shown to users). It can be used when you want to add multiple comments independently to a given object.

Optional Indicate if new comment messages should be appended to previous comment message. Only true is allowed. Just skip this option when you don't need it.

Optional Indicate if previous comment should be removed before creating a new comment. Only true is allowed. Just skip this option when you don't need it.

Optional Delete a previously created comment. Use header to point to which comment you want to delete. Only true is allowed (i.e. delete this option if you don't need it).

Optional Only create a new comment if there is no existing one, otherwise do nothing. Only true is allowed. Just skip this item when you don't need it. This options has higher priority than hide_and_recreate, hide.

Optional Only update a exist comment if there is existing one, otherwise do nothing. Only true is allowed. Just skip this item when you don't need it.

Optional Hide a previously created comment. Use header to point to which comment you want to delete. Only true is allowed (i.e. delete this option if you don't need it).

Optional The reasons a piece of content can be reported or minimized. SPAM, ABUSE, OFF_TOPIC, OUTDATED, DUPLICATE, RESOLVED are available. default is OUTDATED.

Optional Hide summary tags in the previously created comment. Only true is allowed. Just skip this item when you don't need it.

Optional Indicate if previous comment should be removed before creating a new comment. Only true is allowed. Just skip this option when you don't need it.

Optional Comment message

Optional Path to file containing comment message

Optional Pull request number for push event. Note that this has a lower priority than the number of a pull_request event.

Optional Another repository owner, If not set, the current repository owner is used by default. Note that when you trying changing a repo, be aware that GITHUB_TOKEN should also have permission for that repository.

Optional Another repository name. Of limited use on GitHub enterprise. If not set, the current repository is used by default. Note that when you trying changing a repo, be aware that GITHUB_TOKEN should also have permission for that repository.

Optional By default this is false. If set to true, no comment will be posted if the comment body is empty. Note that enabling this will prevent comment hiding & deletion from working when the body is empty.

Optional By default this is false. If set to true, recreating or updating a comment will be skipped if the new message is identical to the current message.

Optional, You can set PAT here. If not set, this will use ${{ github.token }}.

ID of previous comment, if found

ID of newly created comment, if any

Feel free to report issues. 😃