Initial commit

Dockerfile

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+FROM python:3-alpine
+MAINTAINER Tediore <tediore.maliwan@gmail.com>
+
+ADD battery2mqtt.py /
+
+RUN pip install paho.mqtt
+
+CMD [ "python", "./battery2mqtt.py" ]

battery2mqtt.py

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+import os
+import json
+from time import sleep
+import paho.mqtt.client as mqtt
+
+MQTT_HOST = os.getenv('MQTT_HOST')
+MQTT_PORT = int(os.getenv('MQTT_PORT', 1883))
+MQTT_USER = os.getenv('MQTT_USER')
+MQTT_PASSWORD = os.getenv('MQTT_PASSWORD')
+MQTT_QOS = int(os.getenv('MQTT_QOS', 1))
+MQTT_TOPIC = os.getenv('MQTT_TOPIC', 'server')
+INTERVAL = int(os.getenv('INTERVAL', 60))
+MONITORED_CONDITIONS = os.environ.get('MONITORED_CONDITIONS','alarm,capacity,capacity_level,present,status,voltage_now')
+
+client = mqtt.Client("battery2mqtt")
+client.username_pw_set(MQTT_USER, MQTT_PASSWORD)
+
+monitored_conditions = MONITORED_CONDITIONS.split(',')
+
+path = "/sys/class/power_supply"
+
+dirs = os.listdir(path)
+
+payload = {}
+
+while True:
+    for dir in dirs:
+        for name in monitored_conditions:
+            try:
+                with open(path + '/' + dir + '/' + name, 'r') as file:
+                    if name in ['alarm', 'capacity', 'present']:
+                        payload[name] = int(file.read().replace('\n',''))
+                    elif 'voltage' in name:
+                        payload[name] = round(float(file.read().replace('\n','')) / 1000000,2)
+                    else:
+                        payload[name] = file.read().replace('\n','')
+            except:
+                payload[name] = "condition not found"
+
+    client.connect(MQTT_HOST)
+    client.publish("battery2mqtt/" + MQTT_TOPIC + '/' + dir, json.dumps(payload), qos=MQTT_QOS, retain=False)
+
+    sleep(INTERVAL)

docker-compose.yaml

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+  battery2mqtt:
+    container_name: battery2mqtt
+    image: battery2mqtt:latest
+    environment:
+    - MQTT_HOST=10.0.0.2
+    - MQTT_PORT=1883
+    - MQTT_USER=user
+    - MQTT_PASSWORD=password
+    - MQTT_QOS=1
+    - INTERVAL=60
+    - MONITORED_CONDITIONS=status,capacity
+    volumes:
+    - /sys/class/power_supply:/sys/class/power_supply:ro
+    restart: unless-stopped