139 lines
4.8 KiB
Python
139 lines
4.8 KiB
Python
from gpiozero import LED
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from gpiozero import Button
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import subprocess
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from threading import Thread
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import socket
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import yaml
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import time
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from call_manager import CallManager, NO_CALL, INCOMING_CALL, OUTGOING_CALL, OP_CALL, OP_HANG, OP_PING, OP_OK, OP_ERROR
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CHECK_STATUS_INTERVAL = 120
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callManager = CallManager()
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def getstationbyip(ip):
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for s in stations:
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if s['ip'] == ip:
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return s
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return None
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# Escuchamos en port para peticiones de operaciones.
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serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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def listen(call_manager):
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serversocket.bind(('0.0.0.0', port))
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print('Listening address', socket.gethostname(), 'on port', port)
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serversocket.listen(5)
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while True:
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# accept connections from outside
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(clientsocket, ip_address) = serversocket.accept()
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data = clientsocket.recv(1024)
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print('Connection from', ip_address, 'host=', clientsocket.getpeername(), 'data=', data.decode())
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station = getstationbyip(ip_address[0])
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if data == OP_HANG:
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call_manager.hang()
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clientsocket.send(OP_OK)
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elif data == OP_CALL:
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if callManager.state == OUTGOING_CALL or callManager.state == INCOMING_CALL:
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callManager.hang()
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call_manager.incoming_call(station)
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clientsocket.send(OP_OK)
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elif data == OP_PING:
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station['green'].on()
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clientsocket.send(OP_OK)
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else:
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clientsocket.send(OP_ERROR)
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clientsocket.close()
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# Comprueba que el otro intercom esta activo.
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def check_status(station):
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while True:
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s = socket.socket()
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try:
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s.connect((station['host'], station['port']))
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s.send(OP_PING)
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if s.recv(1024) == OP_OK:
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station['green'].on()
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else:
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station['red'].off()
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station['green'].off()
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except socket.error:
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station['red'].off()
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station['green'].off()
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print('Check status failed! host=', station['host'])
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finally:
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s.close()
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time.sleep(CHECK_STATUS_INTERVAL)
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config = yaml.safe_load(open("intercom.yml"))
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port = config['port']
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stations = config['stations']
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# Start thread to wait for incoming hang petitions.
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thread_listen = Thread(target=listen, args=(callManager,))
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thread_listen.daemon = True
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thread_listen.start()
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# Power off leds and start threads to check other intercoms status.
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for _station in stations:
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_station['ip'] = socket.gethostbyname(_station['host'])
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_station['red'] = LED(_station['red led'])
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_station['red'].off()
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_station['green'] = LED(_station['green led'])
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_station['green'].off()
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_station['btn'] = Button(_station['button'])
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_station['old button state'] = _station['btn'].is_pressed
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_station['button state changed time'] = time.clock_gettime(time.CLOCK_MONOTONIC)
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_station['button pressed'] = False
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thread_check = Thread(target=check_status, args=(_station,))
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thread_check.daemon = True
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thread_check.start()
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# Listen for swith changes.
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try:
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while True:
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for _station in stations:
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# new_input_state = GPIO.input(_station['button'])
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new_input_state = _station['btn'].is_pressed
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# print('new_input_state ', new_input_state)
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# Al pulsar el interruptor cambia el estado.
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elapsed_time = time.clock_gettime(time.CLOCK_MONOTONIC) - _station['button state changed time']
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if new_input_state != _station['old button state'] and elapsed_time > 0.2:
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if not _station['toogle button']:
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_station['button pressed'] = not _station['button pressed']
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if _station['button pressed']:
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_station['old button state'] = new_input_state
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_station['button state changed time'] = time.clock_gettime(time.CLOCK_MONOTONIC)
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continue
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print('Interruptor pulsado callManager.state=', callManager.state, 'elapsed_time', elapsed_time)
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# Si no hay llamada en curso la hacemos.
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if callManager.state == NO_CALL:
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callManager.call(_station)
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elif callManager.state == OUTGOING_CALL:
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callManager.notify_hang()
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callManager.hang()
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elif callManager.state == INCOMING_CALL:
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callManager.notify_hang()
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callManager.hang()
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_station['old button state'] = new_input_state
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_station['button state changed time'] = time.clock_gettime(time.CLOCK_MONOTONIC)
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time.sleep(0.02)
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finally:
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print('Close listeing port ', port)
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serversocket.close()
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for _station in stations:
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_station['red'].close()
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_station['green'].close()
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_station['btn'].close()
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