rerun-flaky-workflows.yml

name: Rerun Flaky Workflows

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

jobs:
  rerun-on-failure:
    runs-on: ubuntu-latest
    if: ${{ github.event.workflow_run.conclusion == 'failure'}}
    permissions:
      # permission required to rerun a workflow https://docs.github.com/en/rest/authentication/permissions-required-for-github-apps?apiVersion=2022-11-28#repository-permissions-for-actions
      # gh run rerun --failed requires write permission
      actions: write
    steps:
      - name: Display Workflow Run Information
        env:
          WORKFLOW_RUN_ID: ${{ github.event.workflow_run.id }}
          WORKFLOW_RUN_NAME: ${{ github.event.workflow_run.name }}
          WORKFLOW_RUN_ATTEMPT: ${{ github.event.workflow_run.run_attempt }}
          WORKFLOW_RUN_HTML_URL: ${{ github.event.workflow_run.html_url }}
          GITHUB_JOB: ${{ github.job }}
          GITHUB_RUN_ATTEMPT: ${{ github.run_attempt }}
          AUTHOR_NAME: ${{ github.event.workflow_run.head_commit.author.name }}
          GITHUB_ACTOR: ${{ github.actor }}
        run: |
          echo "The Workflow Run $WORKFLOW_RUN_NAME has failed! " >> $GITHUB_STEP_SUMMARY
          echo "View the failed run attempt ($WORKFLOW_RUN_ATTEMPT) here: WORKFLOW_RUN_HTML_URL" >> $GITHUB_STEP_SUMMARY
          echo "Workflow Run ID: $WORKFLOW_RUN_ID"
          echo "Job ID: $GITHUB_JOB"
          echo "Current run: $GITHUB_RUN_ATTEMPT"
          echo "Author: $AUTHOR_NAME"
          echo "Actor: $GITHUB_ACTOR"
      - name: Rerun failed jobs in the current workflow
        env:
          GH_TOKEN: ${{ github.token }}
          WORKFLOW_RUN_ATTEMPT: ${{ github.event.workflow_run.run_attempt }}
          WORKFLOW_RUN_ID: ${{ github.event.workflow_run.id }}
          GITHUB_REPOSITORY: ${{ github.repository }}
        run: |
          MAX_RUNS=2
          CURRENT_RUN="$WORKFLOW_RUN_ATTEMPT"
          if [ $CURRENT_RUN -lt $MAX_RUNS ]; then
            gh run rerun "$WORKFLOW_RUN_ID" --repo "$GITHUB_REPOSITORY" --failed
          else
            exit 1
          fi
      - name: Check out the repo
        if: ${{ !cancelled() && failure() }} # Run only if the previous step failed
        uses: actions/checkout@v4

      - name: Update env vars
        if: ${{ !cancelled() && failure() }} # Run only if the previous step failed
        env:
          WORKFLOW_RUN_HEAD_SHA: ${{ github.event.workflow_run.head_sha }}
        run: |
          commit_short="$(git rev-parse --short $WORKFLOW_RUN_HEAD_SHA)"
          echo "BREAKING_COMMIT_SHORT=$commit_short" >> $GITHUB_ENV

      - name: Slack Notification
        uses: ./.github/actions/slack-notification
        if: ${{ !cancelled() && failure() && github.event.workflow_run.head_branch == 'main'}} # Run only if the previous step failed
        continue-on-error: true
        env:
          BREAKING_COMMIT: "${{ github.event.workflow_run.head_sha }}"
          RUN_URL: "${{ github.event.workflow_run.html_url }}"
          RUN_NAME: "${{ github.event.workflow_run.name }}"
          BRANCH: "${{ github.event.workflow_run.head_branch }}"
          REPO: "${{ github.repository }}"
          WORKFLOW_NAME: "${{ github.event.workflow.name }}"
          WORKFLOW_HEAD_BRANCH: "${{ github.event.workflow_run.head_branch }}"
          GITHUB_ACTOR: "${{ github.actor }}"
        with:
          vault-url: ${{ secrets.VAULT_ADDR }}
          vault-role-id: ${{ secrets.CSP_VAULT_ROLE_ID }}
          vault-secret-id: ${{ secrets.CSP_VAULT_SECRET_ID }}
          slack-payload: |
            {
              "text": ":alert: CI ${{ env.WORKFLOW_NAME }} is failing on ${{ env.WORKFLOW_HEAD_BRANCH }} :alert:",
            	"blocks": [
                {
                  "type": "header",
                  "text": {
                    "type": "plain_text",
                    "text": ":alert: CI ${{ env.WORKFLOW_NAME }} is failing on ${{ env.WORKFLOW_HEAD_BRANCH }} :alert:",
                    "emoji": true
                  }
                }
              ],
              "attachments": [
                {
                  "color": "#D40E0D",
                  "blocks": [
                    {
                      "type": "section",
                      "text": {
                        "type": "mrkdwn",
                        "text": "Commit <https://github.com/elastic/cloudbeat/commit/${{env.BREAKING_COMMIT}}|${{env.BREAKING_COMMIT_SHORT}}> by ${{env.GITHUB_ACTOR}} has failing tests on the `${{env.BRANCH}}` branch."
                      }
                    },
                    {
                      "type": "divider"
                    },
                    {
                      "type": "actions",
                      "elements": [
                        {
                          "type": "button",
                          "text": {
                            "type": "plain_text",
                            "text": "Failing Commit",
                            "emoji": true
                          },
                          "url": "https://github.com/elastic/cloudbeat/commit/${{env.BREAKING_COMMIT}}"
                        },
                        {
                          "type": "button",
                          "text": {
                            "type": "plain_text",
                            "text": "Failed CI Run",
                            "emoji": true
                          },
                          "url": "${{env.RUN_URL}}"
                        }
                      ]
                    }
                  ]
                }
              ]
            }