SafeEyes/safeeyes/rpc.py

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Python
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2017-10-07 15:10:31 +02:00
#!/usr/bin/env python
# Safe Eyes is a utility to remind you to take break frequently
# to protect your eyes from eye strain.
# Copyright (C) 2017 Gobinath
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
RPC server and client implementation.
"""
import logging
from threading import Thread
from safeeyes import Utility
from xmlrpc.server import SimpleXMLRPCServer
from xmlrpc.client import ServerProxy
class RPCServer(object):
"""
An aynchronous RPC server.
"""
def __init__(self, port, context):
self.__running = False
logging.info('Setting up an RPC server on port %d', port)
self.__server = SimpleXMLRPCServer(("localhost", port), logRequests=False, allow_none=True)
self.__server.register_function(lambda: Utility.execute_main_thread(context['api']['show_settings']), 'show_settings')
self.__server.register_function(lambda: Utility.execute_main_thread(context['api']['show_about']), 'show_about')
self.__server.register_function(lambda: Utility.execute_main_thread(context['api']['enable_safeeyes']), 'enable_safeeyes')
self.__server.register_function(lambda: Utility.execute_main_thread(context['api']['disable_safeeyes']), 'disable_safeeyes')
self.__server.register_function(lambda: Utility.execute_main_thread(context['api']['take_break']), 'take_break')
self.__server.register_function(lambda: Utility.execute_main_thread(context['api']['quit']), 'quit')
def start(self):
"""
Start the RPC server.
"""
if not self.__running:
self.__running = True
logging.info('Start the RPC server')
server_thread = Thread(target=self.__server.serve_forever)
server_thread.start()
def stop(self):
"""
Stop the server.
"""
if self.__running:
logging.info('Stop the RPC server')
self.__running = False
self.__server.shutdown()
class RPCClient(object):
"""
An RPC client to communicate with the RPC server.
"""
def __init__(self, port):
self.port = port
def show_settings(self):
"""
Show the settings dialog.
"""
with ServerProxy('http://localhost:%d/' % self.port, allow_none=True) as proxy:
proxy.show_settings()
def show_about(self):
"""
Show the about dialog.
"""
with ServerProxy('http://localhost:%d/' % self.port, allow_none=True) as proxy:
return proxy.show_about()
def enable_safeeyes(self):
"""
Enable Safe Eyes.
"""
with ServerProxy('http://localhost:%d/' % self.port, allow_none=True) as proxy:
return proxy.enable_safeeyes()
def disable_safeeyes(self):
"""
Disable Safe Eyes.
"""
with ServerProxy('http://localhost:%d/' % self.port, allow_none=True) as proxy:
return proxy.disable_safeeyes()
def take_break(self):
"""
Take a break now.
"""
with ServerProxy('http://localhost:%d/' % self.port, allow_none=True) as proxy:
return proxy.take_break()
def quit(self):
"""
Quit Safe Eyes.
"""
with ServerProxy('http://localhost:%d/' % self.port, allow_none=True) as proxy:
return proxy.quit()