62 lines
1.6 KiB
Plaintext
62 lines
1.6 KiB
Plaintext
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#!/usr/bin/env python
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import argparse
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import yaml
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import paho.mqtt.client
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import sqlite3
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import datetime
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def init_db(path, topics):
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db = sqlite3.connect(path)
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return db
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def main():
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options = argparse.ArgumentParser()
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options.add_argument('--broker', '-b', default='localhost')
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options.add_argument('--port', '-p', default='1883', type=int)
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options.add_argument('topicfile')
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options.add_argument('db')
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args = options.parse_args()
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with open(args.topicfile, 'r') as f:
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config_dict = yaml.load(f, Loader=yaml.Loader)
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print(config_dict['topics'])
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db = init_db(args.db, config_dict['topics'])
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client = paho.mqtt.client.Client()
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def on_disconnect(client, userdata, rc):
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client.reconnect()
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def on_message(client, userdata, msg):
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try:
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c = db.cursor()
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table = msg.topic.replace("/", "_")
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ts = datetime.datetime.now()
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value = float(msg.payload)
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c.execute(f'CREATE TABLE IF NOT EXISTS {table} '
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'(timestamp timestamp, value real)')
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c.execute(f'INSERT INTO {table} VALUES (?, ?)', (ts, value))
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c.execute(f'SELECT * from {table}')
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db.commit()
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except Exception as e:
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print(f'Error writing to database: {e}')
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client.on_disconnect = on_disconnect
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client.on_message = on_message
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client.connect(args.broker, args.port)
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client.subscribe([(topic, 2) for topic in config_dict['topics']])
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try:
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client.loop_forever()
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except Exception:
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db.commit()
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db.close()
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if __name__ == '__main__':
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main()
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