add u_bat, drop label sending to device

.gitlab-ci.yml

@@ -30,7 +30,7 @@ deploy:
     - tags
   variables:
     GIT_STRATEGY: none
-    CONTAINER_NAME: preprocessor
+    CONTAINER_NAME: badesee-preprocessor
   script:
     - docker stop $CONTAINER_NAME || echo "container not running, never mind"
     - docker rm $CONTAINER_NAME || echo "container not existing, never mind"
@@ -39,16 +39,17 @@ deploy:
       -d
       --name $CONTAINER_NAME
       --restart always
-      --link timescaledb-server
+      --network internal-network
       -e "APPLICATION_TENANT=$APPLICATION_TENANT"
       -e "MQTT_LOGIN=$MQTT_LOGIN"
       -e "MQTT_PASSWORD=$MQTT_PASSWORD"
       -e "MQTT_BROKER=$MQTT_BROKER"
-      -e "PGHOST=timescaledb-server"
+      -e "PGHOST=timescaledb"
       -e "PGUSER=$PGUSER"
       -e "PGPASSWORD=$PGPASSWORD"
       -e "PGDATABASE=$PGDATABASE"
       $IMAGE_NAME:$CI_COMMIT_TAG
+    - docker network connect external-network $CONTAINER_NAME
   environment:
     name: production
 

schema/create-schema.sql

@@ -1,3 +1,6 @@
+create database monitoring;
+create extension timescaledb;
+
 CREATE TABLE device_t (
     id SERIAL NOT NULL PRIMARY KEY,
     device_id VARCHAR(32) NOT NULL UNIQUE,
@@ -30,10 +33,6 @@ insert into sensor_t (address, label, index, device)
          (10664523975231507496, '3,0m ', 2, 1), 
          (15276209993662477608, '4,0m ', 3, 1);
 
-select d.label as device_label,
-       s.label as label,
-       s.address as address,
-       s.index as index
-  from device_t d, sensor_t s
-  where d.id = s.device;
-  
+create user preprocessor password 'geheim';
+grant select on device_t, sensor_t to preprocessor;
+grant insert on measurement_t to preprocessor;

src/preprocess.py

@@ -70,8 +70,8 @@ class DbOp(object):
             with conn:
                 with conn.cursor() as cur:
                     for entry in measurement['measurements']:
-                        cur.execute("insert into measurement_t (time, device_name, sensor_name, temperature) values (%(time)s, %(dname)s, %(sname)s, %(tempc)s)",
-                                    { 'time': measurement['time'], 'dname': measurement['label'], 'sname': entry['label'], 'tempc': entry['value'] })
+                        cur.execute("insert into measurement_t (time, device_name, sensor_name, temperature) values (now(), %(dname)s, %(sname)s, %(tempc)s)",
+                                    { 'dname': measurement['label'], 'sname': entry['label'], 'tempc': entry['value'] })
         except Exception as e:
             logger.error(f"Error storing measurement: {e}")
         finally:
@@ -91,7 +91,6 @@ def mqttOnMessageCallback(client, userdata, message):
         logger.debug(f"mqtt message received: {topic} -> {payload}")
         parse_payload = json.loads(payload)
 
-        sendSetupMessage = False
         device_id = parse_payload['end_device_ids']['device_id']
 
         dbh = DbOp(config)
@@ -107,27 +106,18 @@ def mqttOnMessageCallback(client, userdata, message):
 
         frame = base64.b64decode(parse_payload['uplink_message']['frm_payload'])
         status = struct.unpack('<H', frame[0:2])[0]
-        logger.debug(f"{frame=}, {status=}")
+        u_bat = struct.unpack('<H', frame[2:2])[0]
+        logger.debug(f"{frame=}, {status=}, {u_bat=}")
 
-        if (status == 4):
-            logger.info(f"Start up message received from {device_id}, {device['label']}")
-            for i in range(0, num_of_sensors):
-                start_index = 2 + (i * 8)
-                end_index = start_index + 8
-                received_sensor_address = struct.unpack('<Q', frame[start_index:end_index])[0]
-                logger.debug(f"sensor {i}: 0x{received_sensor_address:016x}")
-                if (received_sensor_address not in sensors):
-                    raise UnknownSensorException(received_sensor_address)
-            sendSetupMessage = True
-        else:
-            logger.info(f"Regular message received from {device_id}, {device['label']}")
-            measurement = {
-                'label': device['label'],
-                'time': parse_payload['received_at'],
-                'measurements': []
-            }
-            for i in range(0, num_of_sensors):
-                addr_start_index = 2 + (i * (8 + 4))
+        logger.info(f"Regular message received from {device_id}, {device['label']}")
+        measurement = {
+            'label': device['label'],
+            'time': parse_payload['received_at'],
+            'measurements': []
+        }
+        for i in range(0, num_of_sensors):
+            try:
+                addr_start_index = 4 + (i * (8 + 4))
                 addr_end_index = addr_start_index + 8
                 received_sensor_address = struct.unpack('<Q', frame[addr_start_index:addr_end_index])[0]
                 if (received_sensor_address not in sensors):
@@ -141,31 +131,10 @@ def mqttOnMessageCallback(client, userdata, message):
                     "value": value,
                     "label": sensors[received_sensor_address][1]
                 })
-            dbh.storeMeasurement(measurement)
+            except UnknownSensorException as e:
+                logger.error(f"unknown sensor in message {e.sensorAddress}")
+        dbh.storeMeasurement(measurement)
 
-        if (sendSetupMessage):
-            sendSetupMessage = False
-            setupMessage = bytes()
-            null = 0
-            null = null.to_bytes(1, byteorder='big')
-            for sk, sv in sensors.items():
-                logger.debug(f"{sk=}, {sv=}")
-                setupMessage += struct.pack('<Q', sk) + sv[0].to_bytes(1, byteorder='big') + bytes(sv[1], 'ASCII') + null
-            setupMessage = base64.b64encode(setupMessage).decode('ASCII')
-            logger.debug(f"about to send setup message {setupMessage}")
-            setupTopic = f"v3/{config['APPLICATION_TENANT']}/devices/{device_id}/down/push"
-            client.publish(setupTopic, json.dumps({
-                "downlinks": [
-                    {
-                        "f_port": 1,
-                        "frm_payload": setupMessage,
-                        "priority": "NORMAL"
-                    }
-                ]
-            }))
-
-    except UnknownSensorException as e:
-        logger.error(f"unknown sensor in message {e.sensorAddress}")
     except DeviceNotFoundException as e:
         logger.error(f"message from unknown device {e.deviceId}")
     except Exception as e: