implement Edge-Hub integration with user_id validation (SCRUM-93, SCRUM-94)

- Agent: Updated config and main
- Edge: Implemented adapter factory in main.py to switch between MQTT and HTTP.
- Edge: Updated AgentData entity and processing logic to support user_id.
- Infrastructure: Configured docker-compose for dynamic protocol switching and environment management.

agent/src/config.py

@@ -8,7 +8,7 @@ def try_parse(type, value: str):
         return None
 
 
-USER_ID = 1
+USER_ID = try_parse(int, os.environ.get("USER_ID")) or 1
 # MQTT config
 MQTT_BROKER_HOST = os.environ.get("MQTT_BROKER_HOST") or "mqtt"
 MQTT_BROKER_PORT = try_parse(int, os.environ.get("MQTT_BROKER_PORT")) or 1883

agent/src/main.py

@@ -28,6 +28,7 @@ def publish(client, topic, datasource):
         data = datasource.read()
         msg = AggregatedDataSchema().dumps(data)
         result = client.publish(topic, msg)
+        print(f"Published to {topic}: {msg[:50]}...")
         status = result[0]
         if status != 0:
             print(f"Failed to send message to topic {topic}")

docker-compose.yaml

@@ -22,6 +22,7 @@ services:
     depends_on:
       - mqtt
     environment:
+      PYTHONUNBUFFERED: 1
       MQTT_BROKER_HOST: "mqtt"
       MQTT_BROKER_PORT: 1883
       MQTT_TOPIC: "agent_data_topic"
@@ -37,11 +38,13 @@ services:
     depends_on:
       - mqtt
     environment:
+      PYTHONUNBUFFERED: 1
       MQTT_BROKER_HOST: "mqtt"
       MQTT_BROKER_PORT: 1883
-      MQTT_TOPIC: " "
-      HUB_HOST: "store"
+      MQTT_TOPIC: "agent_data_topic"
+      HUB_HOST: "hub"
       HUB_PORT: 8000
+      HUB_CONNECTION_TYPE: "http"
       HUB_MQTT_BROKER_HOST: "mqtt"
       HUB_MQTT_BROKER_PORT: 1883
       HUB_MQTT_TOPIC: "processed_data_topic"
@@ -54,6 +57,7 @@ services:
     container_name: postgres_db
     restart: always
     environment:
+      PYTHONUNBUFFERED: 1
       POSTGRES_USER: user
       POSTGRES_PASSWORD: pass
       POSTGRES_DB: test_db
@@ -70,6 +74,7 @@ services:
     image: dpage/pgadmin4
     restart: always
     environment:
+      PYTHONUNBUFFERED: 1
       PGADMIN_DEFAULT_EMAIL: admin@admin.com
       PGADMIN_DEFAULT_PASSWORD: root
     volumes:
@@ -89,6 +94,7 @@ services:
       - postgres_db
     restart: always
     environment:
+      PYTHONUNBUFFERED: 1
       POSTGRES_USER: user
       POSTGRES_PASSWORD: pass
       POSTGRES_DB: test_db
@@ -120,6 +126,7 @@ services:
       - redis
       - store
     environment:
+      PYTHONUNBUFFERED: 1
       STORE_API_HOST: "store"
       STORE_API_PORT: 8000
       REDIS_HOST: "redis"

edge/app/adapters/agent_mqtt_adapter.py

@@ -40,8 +40,11 @@ class AgentMQTTAdapter(AgentGateway):
             # Process the received data (you can call a use case here if needed)
             processed_data = process_agent_data(agent_data)
             # Store the agent_data in the database (you can send it to the data processing module)
-            if not self.hub_gateway.save_data(processed_data):
-                logging.error("Hub is not available")
+            if processed_data is not None:
+                if not self.hub_gateway.save_data(processed_data):
+                    logging.error("Hub is not available")
+            else:
+                logging.info("Road is fine, no data sent to hub.")
         except Exception as e:
             logging.info(f"Error processing MQTT message: {e}")
 

edge/app/entities/agent_data.py

@@ -14,6 +14,7 @@ class GpsData(BaseModel):
 
 
 class AgentData(BaseModel):
+    user_id: int
     accelerometer: AccelerometerData
     gps: GpsData
     timestamp: datetime

edge/app/usecases/data_processing.py

@@ -13,3 +13,11 @@ def process_agent_data(
         processed_data_batch (ProcessedAgentData): Processed data containing the classified state of the road surface and agent data.
     """
     # Implement it
+
+    if not hasattr(agent_data, 'user_id') or agent_data.user_id is None:
+        agent_data.user_id = 1
+
+    return ProcessedAgentData(
+        road_state="normal",
+        agent_data=agent_data
+    )

edge/config.py

@@ -16,9 +16,12 @@ MQTT_TOPIC = os.environ.get("MQTT_TOPIC") or "agent_data_topic"
 # Configuration for hub MQTT
 HUB_MQTT_BROKER_HOST = os.environ.get("HUB_MQTT_BROKER_HOST") or "localhost"
 HUB_MQTT_BROKER_PORT = try_parse_int(os.environ.get("HUB_MQTT_BROKER_PORT")) or 1883
-HUB_MQTT_TOPIC = os.environ.get("HUB_MQTT_TOPIC") or "processed_agent_data_topic"
+HUB_MQTT_TOPIC = os.environ.get("HUB_MQTT_TOPIC") or "processed_data_topic"
 
 # Configuration for the Hub
 HUB_HOST = os.environ.get("HUB_HOST") or "localhost"
-HUB_PORT = try_parse_int(os.environ.get("HUB_PORT")) or 12000
+HUB_PORT = try_parse_int(os.environ.get("HUB_PORT")) or 8000
 HUB_URL = f"http://{HUB_HOST}:{HUB_PORT}"
+
+# For choosing type of connection
+HUB_CONNECTION_TYPE = os.environ.get("HUB_CONNECTION_TYPE") or "mqtt"

edge/main.py

@@ -1,4 +1,5 @@
 import logging
+import os
 from app.adapters.agent_mqtt_adapter import AgentMQTTAdapter
 from app.adapters.hub_http_adapter import HubHttpAdapter
 from app.adapters.hub_mqtt_adapter import HubMqttAdapter
@@ -10,39 +11,51 @@ from config import (
     HUB_MQTT_BROKER_HOST,
     HUB_MQTT_BROKER_PORT,
     HUB_MQTT_TOPIC,
+    HUB_CONNECTION_TYPE,
 )
 
 if __name__ == "__main__":
     # Configure logging settings
     logging.basicConfig(
-        level=logging.INFO,  # Set the log level to INFO (you can use logging.DEBUG for more detailed logs)
+        level=logging.INFO,
         format="[%(asctime)s] [%(levelname)s] [%(module)s] %(message)s",
         handlers=[
-            logging.StreamHandler(),  # Output log messages to the console
-            logging.FileHandler("app.log"),  # Save log messages to a file
+            logging.StreamHandler(),
+            logging.FileHandler("app.log"),
         ],
     )
-    # Create an instance of the StoreApiAdapter using the configuration
-    # hub_adapter = HubHttpAdapter(
-    #     api_base_url=HUB_URL,
-    # )
-    hub_adapter = HubMqttAdapter(
-        broker=HUB_MQTT_BROKER_HOST,
-        port=HUB_MQTT_BROKER_PORT,
-        topic=HUB_MQTT_TOPIC,
-    )
-    # Create an instance of the AgentMQTTAdapter using the configuration
+
+    # Logic to select the adapter based on configuration (SCRUM-93 & SCRUM-94)
+    # This allows easy switching between HTTP and MQTT protocols
+    if HUB_CONNECTION_TYPE.lower() == "http":
+        logging.info("Initializing HubHttpAdapter (SCRUM-93 integration)")
+        hub_adapter = HubHttpAdapter(
+            api_base_url=HUB_URL,
+        )
+    else:
+        logging.info("Initializing HubMqttAdapter (SCRUM-94 integration)")
+        hub_adapter = HubMqttAdapter(
+            broker=HUB_MQTT_BROKER_HOST,
+            port=HUB_MQTT_BROKER_PORT,
+            topic=HUB_MQTT_TOPIC,
+        )
+
+    # Create an instance of the AgentMQTTAdapter using the selected hub adapter
+    # This adapter acts as a bridge between the Agent and the Hub
     agent_adapter = AgentMQTTAdapter(
         broker_host=MQTT_BROKER_HOST,
         broker_port=MQTT_BROKER_PORT,
         topic=MQTT_TOPIC,
         hub_gateway=hub_adapter,
     )
+
     try:
-        # Connect to the MQTT broker and start listening for messages
+        logging.info(f"Starting Edge module. Connecting to Agent Broker at {MQTT_BROKER_HOST}:{MQTT_BROKER_PORT}")
+        # Connect to the MQTT broker and start listening for messages from Agent
         agent_adapter.connect()
         agent_adapter.start()
-        # Keep the system running indefinitely (you can add other logic as needed)
+
+        # Keep the system running indefinitely to process incoming data streams
         while True:
             pass
     except KeyboardInterrupt: