Add MongoDB check for `/readyz`

camdetect.py

@@ -8,6 +8,7 @@ import io
 import json
 import numpy as np
 import os
+import pymongo
 import signal
 import sys
 from datetime import datetime, timedelta
@@ -432,9 +433,14 @@ async def stream_wrapper(request):
 
 @app.route("/readyz")
 async def ready_check(request):
-    if app.ctx.mask is not None:
-        return response.text("OK")
-    return response.text("Not enough frames", status=503)
+    try:
+        async for i in app.ctx.coll.find().limit(1):
+            break
+    except pymongo.errors.ServerSelectionTimeoutError:
+        return response.text("MongoDB server selection timeout", status=503)
+    if app.ctx.mask is None:
+        return response.text("Not enough frames", status=503)
+    return response.text("OK")
 
 
 @app.route("/event")

mongo-init.sh

@@ -1,11 +1,4 @@
 #!/bin/bash
 mongo <<EOF
-
-rs.initiate({
-    _id: 'rs0',
-    members: [
-        {_id: 0, host: '127.0.0.1:27017'}
-    ]
-})
-
+rs.initiate()
 EOF