siren.py

# -*- coding: utf-8 -*-

import json
import logging
import sys
import time

import web
from gpiozero import DigitalOutputDevice

from config import LEVEL

web.config.debug = False
urls = (
    '/light', 'Light'
)


# supervisord -c /etc/supervisord.conf
# sudo supervisorctl -c /etc/supervisord.conf reload


class Light:
    def POST(self):
        web_data = '{}'
        if web.data():
            web_data = web.data().decode('utf-8')
        data = json.loads(web_data)
        if not 'duration' in data or not 'actor' in data:
            return web.badrequest()
        turn_on_the_light(data['duration'] or 1, data['actor'])
        return web.nocontent()


def turn_on_the_light(duration, actor):
    logging.info('New light request by {} for {} seconds'.format(actor, duration))
    relay = DigitalOutputDevice(17)
    relay.on()
    time.sleep(float(duration))
    relay.off()
    relay.close()


if __name__ == "__main__":
    log_format = '%(asctime)s - %(levelname)s - %(message)s'
    logging.basicConfig(stream=sys.stdout, level=LEVEL, format=log_format)

    app = web.application(urls, globals())
    app.run()