Telemetry

cloud/APIs/mqtt.py

@@ -0,0 +1,36 @@
+import json
+import os
+import paho.mqtt.publish as publish
+import sys
+
+# Retrieve broker parameters from shared config or environment variables
+MQTT_HOST = os.getenv("MQTT_HOST", "localhost")
+MQTT_PORT = int(os.getenv("MQTT_PORT", 8884))
+MQTT_USER = os.getenv("MQTT_USER", None)
+MQTT_PASS = os.getenv("MQTT_PASS", None)
+
+
+def send_command(topic: str = "cmd/all", payload: dict | str = None):
+    """
+    Publishes an MQTT command payload to a given topic.
+    """
+    if payload is None:
+        payload = {}
+
+    if isinstance(payload, dict):
+        payload_str = json.dumps(payload)
+    else:
+        payload_str = str(payload)
+
+    auth = None
+    if MQTT_USER:
+        auth = {"username": MQTT_USER, "password": MQTT_PASS or ""}
+
+    publish.single(
+        topic=topic,
+        payload=payload_str,
+        hostname=MQTT_HOST,
+        port=MQTT_PORT,
+        auth=auth
+    )
+    print(f"[MQTT] Published command to '{topic}': {payload_str}")

cloud/app.py

@@ -1,11 +1,14 @@
 import os
 import base64
 import uuid
+import datetime
+import sys
 from flask import Flask, request, jsonify
 from pymongo import MongoClient
 from APIs import generate, EdamamAPI
-import sys
+from APIs.mqtt import send_command
 from microwaveCookPlanner import MicrowaveCookPlanner
+
 sys.path.insert(0, '..')
 try:
     from shared import config
@@ -18,12 +21,13 @@ app = Flask(__name__)
 # Configuration & Setup
 # ---------------------------------------------------------
 
-# Configure MongoDB connection (adjust the URI as needed for your environment)
+# Configure MongoDB connection
 MONGO_URI = os.getenv("MONGO_URI", "mongodb://localhost:27017/")
 client = MongoClient(MONGO_URI)
 db = client["microwave_network_db"]
+
 cooking_collection = db["cooking_parameters"]
-device_network_collection = db["device_network"]
+telemetry_collection = db["telemetry_data"]
 
 # Ensure the camera image storage directory exists when the app starts
 CAMERA_IMAGE_DIR = "storage/dishCameraImages"
@@ -103,29 +107,45 @@ def cooking_params():
     # 5. Return complete output
     return jsonify(cook_plan), 201
 
-@app.route("/device-network", methods=["POST"])
-def device_network():
+
+@app.route("/telemetry", methods=["POST"])
+def telemetry():
     data = request.get_json()
     
     if not data:
         return jsonify({"error": "Invalid or missing JSON payload"}), 400
 
+    # Stamp UTC timestamp for Node-RED queries
+    data["received_at"] = datetime.datetime.now(datetime.timezone.utc).isoformat()
 
-    # 2. Save to MongoDB
     try:
-        # Insert the dictionary directly into Mongo (it will retain your exact JSON keys)
-        device_network_collection.insert_one(data)
-        
-        return "", 200
+        # Mongo creates '_id' automatically upon insertion
+        telemetry_collection.insert_one(data)
+        return jsonify({"status": "success", "message": "Telemetry saved"}), 200
         
     except Exception as e:
         return jsonify({"error": f"Database error: {str(e)}"}), 500
-    
+
+
 @app.route("/debug", methods=["GET"])
 def debug():
-    image_path = "microwaveDish.jpg"
-    edamam = EdamamAPI()
-    return edamam.analyze_dish_image(image_path)
+    # Construct external HTTP endpoint dynamically based on incoming request host
+    telemetry_url = f"{request.host_url.rstrip('/')}/telemetry"
+    
+    cmd_payload = {
+        "action": "request_telemetry",
+        "endpoint": telemetry_url
+    }
+    
+    try:
+        send_command(topic="cmd/all", payload=cmd_payload)
+        return jsonify({
+            "status": "Telemetry command sent to cmd/all",
+            "published_payload": cmd_payload
+        }), 200
+    except Exception as e:
+        return jsonify({"error": f"Failed to publish MQTT command: {str(e)}"}), 500
+
 
 if __name__ == "__main__":
-    app.run(debug=config.DEBUG)
+    app.run(debug=getattr(config, "DEBUG", True))