/
ws_server.py
executable file
·113 lines (97 loc) · 4.03 KB
/
ws_server.py
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#!/usr/bin/python
###############################################################################
# MIT License (MIT)
#
# Copyright (c)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
###############################################################################
from autobahn.twisted.websocket import WebSocketServerProtocol, \
WebSocketServerFactory
from json import loads as json_loads
from dispatcher import *
from sys import stdout
from twisted.python import log
from twisted.internet import reactor
from gc import collect as gc_collect
from pprint import pprint
DEBUG = True
PORT = 8000
URL = "ws://8.8.8.8:%d"
MAX_CON = 100
"""@package docstring
Websocket interface module.
Websocket interface implementation for prediction model implementation, input
interfaces are: studentID, and a list of courseID, provides the quality and
prediction values after classification/estimation process.
"""
class BackendServerProtocol(WebSocketServerProtocol):
dispatchers = {}
def onConnect(self, request):
print("Client connecting: %s"%( request.peer ))
def onOpen(self):
print("WebSocket connection open.")
def onMessage(self, payload, isBinary):
# dispatcher = WSDispatcher()
# pprint("Send message")
if isBinary:
print("Binary message received: %d bytes"%( len( payload ) ))
else:
json_string = format(payload.decode('utf8'))
json_input = json_loads( json_string )
if 'source' in json_input.keys():
in_source = json_input['source']
elif u'source' in json_input.keys():
in_source = json_input[u'source']
else:
in_source = 'kuleuven'
# except:
# print in_source
# pprint( json_input )
try:
#dispatcher = self.dispatchers[json_input['requestId']]
if self.dispatchers[self.peer]['source'] != in_source:
raise Exception
dispatcher = self.dispatchers[self.peer]['dispatcher']
except:
dispatcher = WSDispatcher(source=in_source)
#self.dispatchers[json_input['requestId']] = dispatcher
self.dispatchers[self.peer] = {}
self.dispatchers[self.peer]['dispatcher'] = dispatcher
self.dispatchers[self.peer]['source'] = in_source
# echo back message verbatim
#self.sendMessage( self.dispatcher.risk( json_input ), False )
risk = dispatcher.risk( json_input )
pprint( "Risk %s"%risk )
self.sendMessage( risk, False )
def onClose(self, wasClean, code, reason):
try:
del(self.dispatchers[self.peer])
except:
pass
gc_collect()
print("WebSocket connection closed: %s"%( reason ))
if __name__ == '__main__':
log.startLogging( stdout )
factory = WebSocketServerFactory(URL%PORT, debug=DEBUG)
factory.protocol = BackendServerProtocol
factory.setProtocolOptions(maxConnections=MAX_CON)
reactor.listenTCP( PORT, factory )
reactor.run()