Slack - Github Action

A Github Action to send a message to a Slack channel that supports attachments like images.

Configuration

You must set SLACK_WEBHOOK environment value in settings page of your repository in order to use without any problem. Please see here to learn how to do it if you don't know already.

Usage

Create a workflow, set a step that uses this action and don't forget to specify SLACK_WEBHOOK environment value.

name: Notification on push

on:
  push:
    branches:
    - master

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - name: Slack notification
      env:
        SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
      uses: cemkiy/action-slacker@master
      with:
        # requirements fields for slack
        channel: '#channel-name'
        icon_url: 'slack user icon url'
        username: 'slack username'
        # attachment fields(not required)
        fallback: 'Required plain-text summary of the attachment.'
        color: '#36a64f'
        pretext: 'Optional text that appears above the attachment block'
        author_name: 'John Doe'
        author_link: 'http://jdoe.com/me/'
        author_icon: 'http://imageurl.com/icons/icon.jpg'
        title: 'Slack API Documentation'
        title_link: 'https://api.slack.com/'
        text: 'Optional text that appears within the attachment'
        image_url: 'http://my-website.com/path/to/image.jpg'
        thumb_url: 'http://example.com/path/to/thumb.png'
        footer: 'Slack API'
        footer_icon: 'https://platform.slack-edge.com/img/default_application_icon.png'

Output

Default output if you've not set any attachment will look like this.

If you've set an attachment, you should see it in addition to default message.

Advanced Usage

If you want to show different messages based on succes or failure of previous steps in your workflow, use success and failure functions.

- name: Slack notification Failure
  if: failure()
  env:
    SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
  uses: cemkiy/action-slacker@master
  with:
    channel: '#channel-name'
    icon_url: 'slack user icon url'
    username: 'slack username'
    image_url: 'http://my-website.com/path/to/failure.jpg'

- name: Slack notification Success
  if: success()
  env:
    SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
  uses: cemkiy/action-slacker@master
  with:
    channel: '#channel-name'
    icon_url: 'slack user icon url'
    username: 'slack username'
    image_url: 'http://my-website.com/path/to/success.jpg'

Contributing

Please see API documentation in addition to source code in this repository.

License

MIT © 2019 Cem Kıy

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