add slugs to checks, enabling sending them to healthchecks

src/lego_monitoring/alerting/sender.py

@@ -54,9 +54,28 @@ async def send_alert(alert: Alert, note: str = "") -> None:
         # if temp_client:
         #     await client.close()
 
-    # TODO ping healthchecks if enabled
-    if alert.healthchecks_slug is not None:
-        raise NotImplementedError
+
+async def send_healthchecks_status(alert: Alert) -> None:
+    def get_pinging_key(keys: dict[str, str]):
+        if alert.healthchecks_slug in keys:
+            return keys[alert.healthchecks_slug]
+        else:
+            return keys["default"]
+
+    if alert.healthchecks_slug is None:
+        return
+    try:
+        hc_client = cvars.healthchecks_client.get()
+    except LookupError:
+        raise NotImplementedError  # TODO
+    if hc_client is None:
+        return
+    config = cvars.config.get()
+    key = get_pinging_key(config.alert_channels.healthchecks.pinging_keys)
+    if alert.severity == Severity.OK:
+        await hc_client.success(key, alert.healthchecks_slug, create=True, log=alert.plain_message)
+    else:
+        await hc_client.failure(key, alert.healthchecks_slug, create=True, log=alert.plain_message)
 
 
 # TODO service itself has to be monitored like everything else - with regular pinging - if we're