slack-workflow-failed.yml

name: CI Results
run-name: ${{ github.event.workflow.name }} on ${{ github.event.workflow_run.head_branch }}
on:
  workflow_run:
    types: [ 'completed' ]
    workflows:
      - Test
      - Run
    branches: [ '🙄' ]

jobs:
  notify:
    name: Notify failure
    runs-on: ubuntu-latest
    if: ${{ github.event.workflow_run.conclusion == 'failure' && github.event.workflow_run.event != 'issues' && github.event.workflow_run.event != 'issue_comment' }}

    steps:
      - uses: actions/checkout@v3
      - name: dump
        run: cat "$GITHUB_EVENT_PATH"
      - name: Generate message
        id: message
        run: |
          source .github/files/gh-funcs.sh

          # If this is triggered off of another "workflow_run" workflow, it'll always see the head_branch as "trunk".
          # In that case, we assume it's setting display_title to be like "NAME on BRANCH" and extract the branch from there.
          if jq -e '.workflow_run.event == "workflow_run"' "$GITHUB_EVENT_PATH" &>/dev/null; then
            TITLE=$(jq -r '.workflow_run.display_title' "$GITHUB_EVENT_PATH")
            BRANCH=${TITLE##* on }
            echo "branch=$BRANCH" >> "$GITHUB_OUTPUT"
            DATA=$( jq -nc --slurpfile event "$GITHUB_EVENT_PATH" --arg branch "$BRANCH" '$event[0] as $e | $e.workflow_run as $run |
              {
                workflow_name: $e.workflow.name,
                branch: $branch,
                run_id: $run.id,
                run_url: $run.html_url,
                duration: ( ( $run.updated_at | fromdateiso8601 ) - ( $run.run_started_at | fromdateiso8601 ) | strftime( "%H:%M:%S" ) ),
              }
            ' )
          else
            BRANCH=$(jq -r '.workflow_run.head_branch' "$GITHUB_EVENT_PATH")
            echo "branch=$BRANCH" >> "$GITHUB_OUTPUT"
            DATA=$( jq -nc --slurpfile event "$GITHUB_EVENT_PATH" '$event[0] as $e | $e.workflow_run as $run |
              ( $run.head_commit.message | sub( "\n.*"; ""; "m" ) | match( " \\(#([0-9]+)\\)$" ).captures[0].string // null ) as $pr |
              {
                workflow_name: $e.workflow.name,
                branch: $run.head_branch,
                run_id: $run.id,
                run_url: $run.html_url,
                duration: ( ( $run.updated_at | fromdateiso8601 ) - ( $run.run_started_at | fromdateiso8601 ) | strftime( "%H:%M:%S" ) ),
                commit: "\( $run.head_commit.id[0:8] ) \( $run.head_commit.message | sub( "\n.*"; ""; "m" ) )",
                author: ( $run.head_commit.author.name ),
                commit_url: "\( $run.head_repository.html_url )/commit/\( $run.head_commit.id )",
                pr: $pr,
                pr_url: ( if $pr then "\( $run.head_repository.html_url )/pull/\( $pr )" else null end )
              }
            ' )
          fi

          jq -r '[
            "### \( .workflow_name ) failed on \( .branch )",
            "",
            if .commit then "Commit: \( .commit )" else empty end,
            if .author then "Author: \( .author )" else empty end,
            "Duration: \( .duration )",
            "",
            (
              [
                "[Run #\( .run_id )](\( .run_url ))",
                if .commit_url then "[Commit](\( .commit_url ))" else empty end,
                if .pr then "[PR #\( .pr )](\( .pr_url ))" else empty end
              ] | join( " | " )
            )
          ] | join( "\n" )' <<<"$DATA" >> $GITHUB_STEP_SUMMARY

          gh_set_output message "$( jq -c '
            {
              icon_emoji: ":github-rejected:",
              text: "*\( .workflow_name ) failed on \( .branch )*\n<\( .run_url )|Run #\( .run_id )>",
              blocks: [
                {
                  type: "section",
                  text: {
                    type: "mrkdwn",
                    text: "*\( .workflow_name ) failed on \( .branch )*"
                  }
                },
                {
                  type: "context",
                  elements: [
                    if .commit then {
                      type: "plain_text",
                      text: "Commit: \( .commit )",
                      emoji: false
                    } else empty end,
                    if .author then {
                      type: "plain_text",
                      text: "Author: \( .author )",
                      emoji: false
                    } else empty end,
                    {
                      type: "plain_text",
                      text: "Duration: \( .duration )"
                    }
                  ]
                },
                {
                  type: "actions",
                  elements: [
                    {
                      type: "button",
                      text: {
                        type: "plain_text",
                        text: "Run #\( .run_id )"
                      },
                      url: .run_url
                    },
                    if .commit_url then {
                      type: "button",
                      text: {
                        type: "plain_text",
                        text: "Commit"
                      },
                      url: .commit_url
                    } else empty end,
                    if .pr then {
                      type: "button",
                      text: {
                        type: "plain_text",
                        text: "PR #\( .pr )"
                      },
                      url: .pr_url,
                    } else empty end
                  ]
                }
              ]
            }
          ' <<<"$DATA" )"

      - name: Send message
        uses: slackapi/slack-github-action@v1.24.0
        with:
          channel-id: ${{ secrets.SLACK_CHANNEL }}
          payload: ${{ steps.message.outputs.message }}
        env:
          SLACK_BOT_TOKEN: ${{ secrets.SLACK_TOKEN }}