failure-alert.yaml

name: Notify on Any Workflow Failure

on:
  workflow_run:
    workflows: ["*"]
    types: [completed]

env:
  MATTERMOST_WEBHOOK_URL: ${{ secrets.DF_MATTERMOST_WEBHOOK_URL }} 
  MATTERMOST_CHANNEL: 'raft-labs-servers'
  MATTERMOST_USERNAME: 'gh-actions alert bot'

jobs:
  notifyMattermostOnFailure:
    if: ${{ github.event.workflow_run.conclusion == 'failure' }}
    runs-on: ubuntu-latest
    steps:
      - name: Create Mattermost Message Payload
        env:
          MATTERMOST_MESSAGE: >
            :rip: A failure occurred in the ${{ github.repository }} repository. 
            Workflow: *${{ github.event.workflow_run.name }}* failed. 
            Check it out [here](${{ github.event.workflow_run.html_url }})
        run: |
          echo "{\"text\": \"${MATTERMOST_MESSAGE}\" }" > mattermost.json
      - name: Send Mattermost Notification
        uses: mattermost/action-mattermost-notify@master