From f0013b481ead4230e28e4e58cee6b378e470523f Mon Sep 17 00:00:00 2001
From: Sean Hammond <seanh@users.noreply.github.com>
Date: Tue, 7 Nov 2023 14:08:06 +0000
Subject: [PATCH] Use Dead Man's Snitch to monitor `alert.yml`

Use Dead Man's Snitch (the new `snitch.yml` workflow that this commit
adds) to monitor the `alert.yml` workflow and make sure it's completing
successfully, instead of having the `slack.yml` workflow post into Slack
when `alert.yml` fails.

This is better because it will alerts us if `alert.yml` is no longer
running, not only if it's running but failing.

Dead Man's Snitch will post the alerts into Slack for us.
---
 .github/workflows/slack.yml  |  2 +-
 .github/workflows/snitch.yml | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 .github/workflows/snitch.yml

diff --git a/.github/workflows/slack.yml b/.github/workflows/slack.yml
index 49ae1b2..3198a29 100644
--- a/.github/workflows/slack.yml
+++ b/.github/workflows/slack.yml
@@ -1,7 +1,7 @@
 name: Slack
 on:
   workflow_run:
-    workflows: [CI, Alert]
+    workflows: [CI]
     types: [completed]
     branches: [main]
 jobs:
diff --git a/.github/workflows/snitch.yml b/.github/workflows/snitch.yml
new file mode 100644
index 0000000..b18b9a3
--- /dev/null
+++ b/.github/workflows/snitch.yml
@@ -0,0 +1,13 @@
+name: Dead Man's Snitch
+on:
+  workflow_run:
+    workflows: [Alert]
+    types: [completed]
+    branches: [main]
+jobs:
+  on-success:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    steps:
+      - name: Check in with Dead Man's Snitch
+        run: curl https://nosnch.in/${{ secrets.SNITCH_ID }}