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""" This is a helper class providing a pilight-daemon in python.
This daemon just simulates the behavior of the real pilight-daemon
and is used for testing only. Of cause only a few important
commands are supported.
This is a very hackish synchronous daemon that is
not an example for good socket servers!
"""
import datetime
import json
import socket
import threading
import time
import sys
if sys.version[0] == '2':
import Queue as queue
else:
import queue as queue
# Settings for the pilight-daemon simulation
HOST = '127.0.0.1'
PORT = 5000
SEND_DELAY = 0.1 # How often a fake code is send in seconds
FAKE_DATA = {"origin": "receiver", # Fake data being send
"repeats": 1,
"message": {
"protocol": ["kaku_switch"],
"id": 0,
"unit": 0,
"off": 1}}
class PilightDaemon(object):
"""Provide a pilight-daemon in with-statement."""
def __init__(self, host=HOST, port=PORT, send_codes=False):
self.host = host
self.port = port
self.send_codes = send_codes
self.pilight_daemon = PilightDeamonSim(
self.host, self.port, self.send_codes)
def __enter__(self):
self.pilight_daemon.start()
time.sleep(0.1)
return self.pilight_daemon
def __exit__(self, _, value, traceback):
self.pilight_daemon.stop()
time.sleep(0.1)
class PilightDeamonSim(threading.Thread):
"""Simulate the pilight-daemon API for testing."""
def __init__(self, host, port, send_codes):
self.send_codes = send_codes
# Setup thread
threading.Thread.__init__(self)
self.daemon = True
self._stop_thread = threading.Event()
self._lock = threading.Lock()
self._data = queue.Queue()
# Setup server socket
self.server_socket = socket.socket(
socket.AF_INET, socket.SOCK_STREAM)
time.sleep(0.1)
self.server_socket.setsockopt(
socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
time.sleep(0.1)
self.server_socket.settimeout(0.01) # Unset blocking
# Try to bin to address. Maybe not available yet thus
# try up to 10 times waiting up to 10 seconds.
# Idea from http://stackoverflow.com/questions/6380057/
# python-binding-socket-address-already-in-use
for _ in range(10):
try:
self.server_socket.bind((host, port))
break
except socket.error:
time.sleep(1)
else: # Called when for loop not breaked
raise RuntimeError('Cannot create socket connection')
self.server_socket.listen(2) # Allow 2 connections
self.client_sockets = []
self.last_send = datetime.datetime.now()
def run(self):
"""Simple infinite loop handling socket connections."""
with self._lock:
while not self._stop_thread.wait(0.01):
self._handle_client_connections()
self._handle_client_data()
self._send_codes()
# Close client connections
for client_socket in self.client_sockets:
client_socket.shutdown(socket.SHUT_RDWR)
client_socket.close()
def _send_codes(self):
if self.send_codes:
if (((datetime.datetime.now() -
self.last_send).total_seconds() > SEND_DELAY)):
if len(self.client_sockets) > 0:
for i in range(10): # Send data 10 times to simulate button press
fake_data = FAKE_DATA.copy()
fake_data['repeats'] = i + 1
self.client_sockets[0].send(
json.dumps(fake_data).encode())
time.sleep(0.01)
def _handle_client_connections(self):
def _new_client(client_socket):
"""Handle new client connection.
Fake pilight-daemon protocol by returning success on identifiy action.
"""
def _acknowledge_connection(messages):
for message in messages: # Loop over received messages
if message: # Can be empty due to splitlines
message_dict = json.loads(message.decode())
if "action" in message_dict:
if message_dict["action"] == "identify":
client_socket.sendall(json.dumps({'status': 'success'}).encode())
else:
client_socket.sendall(json.dumps({'status': 'failure'}).encode())
break
client_socket.settimeout(0.01) # Unset blocking
messages = client_socket.recv(1024).splitlines()
_acknowledge_connection(messages)
return client_socket
try:
self.client_sockets.append(
_new_client(self.server_socket.accept()[0]))
except socket.timeout:
pass
def _handle_client_data(self):
def _handle_message(client_socket):
"""Called in poll loop to handle messages."""
try:
messages = client_socket.recv(1024).splitlines()
for message in messages: # Loop over received messages
if message: # Can be empty due to splitlines
message_dict = json.loads(message.decode())
self._data.put(message_dict)
if message_dict["code"]["protocol"] == "daycom":
client_socket.sendall(
json.dumps({'status': 'success'}).encode())
else:
client_socket.sendall(
json.dumps({'status': 'failure'}).encode())
except socket.error:
pass
for client_socket in self.client_sockets: # Simple poll for data
try:
_handle_message(client_socket)
except socket.timeout: # We poll, thus timeout for no data
pass
def get_data(self):
"""Return received data."""
return self._data.get()
def stop(self):
"""Called to stop the reveiver thread."""
self._stop_thread.set()
with self._lock: # Receive thread might use the socket
try:
self.server_socket.shutdown(socket.SHUT_RDWR)
except socket.error: # Connection already shutdown
pass
self.server_socket.close()
|
