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feat: notify Slack on build failure #454

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Merged
stackptr merged 1 commit into from
Apr 17, 2026
Merged

feat: notify Slack on build failure #454

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66 changes: 66 additions & 0 deletions .github/workflows/ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -68,3 +68,69 @@ jobs:
attic push rc:main $(which attic)
nix build .#devShells.${{ matrix.system }}.default -o ./result-devshell
attic push rc:main ./result-devshell
- name: Prepare Slack context
if: failure()
id: slack-context
env:
EVENT_NAME: ${{ github.event_name }}
SHA: ${{ github.sha }}
PR_NUMBER: ${{ github.event.pull_request.number }}
PR_TITLE: ${{ github.event.pull_request.title }}
PR_URL: ${{ github.event.pull_request.html_url }}
COMMIT_MESSAGE: ${{ github.event.head_commit.message }}
COMMIT_URL: ${{ github.event.head_commit.url }}
run: |
echo "short_sha=${SHA:0:7}" >> $GITHUB_OUTPUT
if [ "$EVENT_NAME" = "pull_request" ]; then
echo "trigger=PR <${PR_URL}|#${PR_NUMBER}: ${PR_TITLE}>" >> $GITHUB_OUTPUT
else
FIRST_LINE=$(printf '%s' "$COMMIT_MESSAGE" | head -1)
echo "trigger=push <${COMMIT_URL}|${FIRST_LINE}>" >> $GITHUB_OUTPUT
fi
- name: Notify Slack on failure
if: failure()
uses: slackapi/slack-github-action@v2
with:
webhook: ${{ secrets.SLACK_WEBHOOK_UPDATES_CI }}
webhook-type: incoming-webhook
payload-templating: true
payload: |
{
"attachments": [
{
"color": "#CC0000",
"blocks": [
{
"type": "header",
"text": {
"type": "plain_text",
"text": ":x: CI build failed",
"emoji": true
}
},
{
"type": "section",
"fields": [
{
"type": "mrkdwn",
"text": "*Host*\n${{ matrix.host }}"
},
{
"type": "mrkdwn",
"text": "*Trigger*\n${{ steps.slack-context.outputs.trigger }}"
}
]
},
{
"type": "context",
"elements": [
{
"type": "mrkdwn",
"text": "<${{ github.server_url }}/${{ github.repository }}|${{ github.repository }}> · <${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}|${{ steps.slack-context.outputs.short_sha }}> · <${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|View run>"
}
]
}
]
}
]
}
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