Fetch existing retained snapshot upon initial connection

- Added logic to request the retained snapshot message upon MQTT connection.
- Ensure initial snapshot is processed after connecting to the MQTT broker.
- Improved debugging logs for better traceability.

dayglo_detector/dayglo_detector.py

@@ -22,6 +22,9 @@ last_rating = 0
 LOWER_COLOR = np.array([20, 100, 100])
 UPPER_COLOR = np.array([40, 255, 255])
 
+# Track if the initial snapshot has been processed
+initial_snapshot_processed = False
+
 def on_connect(client, userdata, flags, rc):
     if rc == 0:
         print("Connected successfully to MQTT broker")
@@ -30,6 +33,8 @@ def on_connect(client, userdata, flags, rc):
         publish_discovery_configurations()
         # Publish initial rating of 0
         publish_rating(0)
+        # Request the retained snapshot to process the initial image
+        client.publish(MQTT_SNAPSHOT_TOPIC, "", qos=1)
     else:
         print(f"Failed to connect, return code {rc}")
 
@@ -50,9 +55,11 @@ def publish_rating(rating):
     client.publish(MQTT_TOPIC_PUBLISH, json.dumps({"rating": rating}))
 
 def on_message(client, userdata, msg):
+    global initial_snapshot_processed
     if msg.topic == MQTT_SNAPSHOT_TOPIC:
         print("Snapshot received")
         process_snapshot(msg.payload)
+        initial_snapshot_processed = True
 
 def process_snapshot(payload):
     if not payload:

docker-compose.yml

@@ -52,12 +52,12 @@ services:
         limits:
           cpus: '0.9'
           memory: 5000M
-    healthcheck:
+    #healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:5000/api/version"]
+    #  test: ["CMD", "curl", "-f", "http://localhost:5000/api/version"]
-      interval: 30s
+    #  interval: 30s
-      timeout: 10s
+    #  timeout: 10s
-      retries: 5
+    #  retries: 5
-      start_period: 30s
+    #  start_period: 30s
 
   dayglo_detector:
     container_name: dayglo_detector
@@ -73,9 +73,9 @@ services:
       MQTT_PASSWORD: 'RadGawlEikWothecOmtAmmoihumid8'
       FRIGATE_URL: 'http://frigate:5000'
       INTERESTED_ZONES: 'Door_Front'
-    depends_on:
+    #depends_on:
-      frigate:
+    #  frigate:
-        condition: service_healthy
+    #    condition: service_healthy
 
 volumes:
   frigate-config: