From c412bf2ee0a3fbf9032fc32a26837d4fbc7585c5 Mon Sep 17 00:00:00 2001
From: Evgeny Zinoviev <me@ch1p.io>
Date: Sat, 27 Nov 2021 16:17:05 +0300
Subject: initial public

---
 src/sensors_mqtt_receiver.py | 56 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100755 src/sensors_mqtt_receiver.py

(limited to 'src/sensors_mqtt_receiver.py')

diff --git a/src/sensors_mqtt_receiver.py b/src/sensors_mqtt_receiver.py
new file mode 100755
index 0000000..011ee44
--- /dev/null
+++ b/src/sensors_mqtt_receiver.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+import paho.mqtt.client as mqtt
+import logging
+import re
+
+from home.mqtt import MQTTBase
+from home.config import config
+from home.mqtt.message import Temperature
+from home.api.types import TemperatureSensorLocation
+from home.database import SensorsDatabase
+
+logger = logging.getLogger(__name__)
+
+
+def get_sensor_type(sensor: str) -> TemperatureSensorLocation:
+    for item in TemperatureSensorLocation:
+        if sensor == item.name.lower():
+            return item
+    raise ValueError(f'unexpected sensor value: {sensor}')
+
+
+class MQTTServer(MQTTBase):
+    def __init__(self):
+        super().__init__(clean_session=False)
+        self.database = SensorsDatabase()
+
+    def on_connect(self, client: mqtt.Client, userdata, flags, rc):
+        super().on_connect(client, userdata, flags, rc)
+        logger.info("subscribing to home/#")
+        client.subscribe('home/#', qos=1)
+
+    def on_message(self, client: mqtt.Client, userdata, msg):
+        try:
+            variants = '|'.join([s.name.lower() for s in TemperatureSensorLocation])
+            match = re.match(rf'home/(\d+)/si7021/({variants})', msg.topic)
+            if not match:
+                return
+
+            home_id = int(match.group(1))
+            sensor = get_sensor_type(match.group(2))
+
+            packer = Temperature()
+            client_time, temp, rh = packer.unpack(msg.payload)
+
+            self.database.add_temperature(home_id, client_time, sensor,
+                                          temp=int(temp*100),
+                                          rh=int(rh*100))
+        except Exception as e:
+            logger.exception(str(e))
+
+
+if __name__ == '__main__':
+    config.load('sensors_mqtt_receiver')
+
+    server = MQTTServer()
+    server.connect_and_loop()
-- 
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