<s> """<STR_LIT>""" <EOL> from __future__ import absolute_import , division , print_function <EOL> import select <EOL> import logging as log <EOL> from datetime import timedelta <EOL> from collections import namedtuple <EOL> import websocket <EOL> from websocket import ABNF <EOL> from thespian . actors import ActorExitRequest , WakeupMessage , Actor <EOL> Start_Websocket = namedtuple ( '<STR_LIT>' , '<STR_LIT>' ) <EOL> Websocket_Output = namedtuple ( '<STR_LIT>' , '<STR_LIT>' ) <EOL> Websocket_Input = namedtuple ( '<STR_LIT>' , '<STR_LIT>' ) <EOL> MAX_MSGS_PER_READ = <NUM_LIT:50> <EOL> class WebsocketClientActor ( Actor ) : <EOL> """<STR_LIT>""" <EOL> def __init__ ( self ) : <EOL> super ( WebsocketClientActor , self ) . __init__ ( ) <EOL> self . started = False <EOL> self . running = False <EOL> self . ws = None <EOL> def check_websocket ( self ) : <EOL> msgs = <NUM_LIT:0> <EOL> events = self . epoll . poll ( <NUM_LIT:0> ) <EOL> while events and msgs < MAX_MSGS_PER_READ : <EOL> for fileno , event in events : <EOL> if not ( event & select . EPOLLIN ) : <EOL> self . send ( self . myAddress , ActorExitRequest ( ) ) <EOL> op_code , frame = self . ws . recv_data_frame ( True ) <EOL> if op_code == ABNF . OPCODE_CLOSE : <EOL> self . send ( self . myAddress , ActorExitRequest ( ) ) <EOL> elif op_code in ( ABNF . OPCODE_PING , ABNF . OPCODE_PONG , ABNF . OPCODE_CONT ) : <EOL> pass <EOL> else : <EOL> msgs += <NUM_LIT:1> <EOL> self . send ( self . config . upstream , Websocket_Output ( frame . data ) ) <EOL> events = self . epoll . poll ( <NUM_LIT:0> ) <EOL> if msgs >= MAX_MSGS_PER_READ : <EOL> log . critical ( "<STR_LIT>" ) <EOL> def receiveMsg_Start_Websocket ( self , m , sender ) : <EOL> if self . started : <EOL> return <EOL> self . config = m <EOL> self . started = True <EOL> self . running = True <EOL> websocket . enableTrace ( False ) <EOL> self . ws = websocket . create_connection ( m . ws_addr ) <EOL> log . info ( "<STR_LIT>" ) <EOL> self . epoll = select . epoll ( ) <EOL> mask = select . EPOLLIN | select . EPOLLHUP | select . EPOLLERR <EOL> self . epoll . register ( self . ws . sock . fileno ( ) , mask ) <EOL> self . ws . send ( m . start_msg ) <EOL> self . send ( self . myAddress , WakeupMessage ( None ) ) <EOL> def receiveMsg_Websocket_Input ( self , m , sender ) : <EOL> if not self . running : <EOL> return <EOL> log . debug ( "<STR_LIT>" , m . msg ) <EOL> self . ws . send ( m . msg ) <EOL> def receiveMsg_WakeupMessage ( self , m , sender ) : <EOL> if not self . running : <EOL> return <EOL> try : <EOL> self . check_websocket ( ) <EOL> except Exception as e : <EOL> log . error ( "<STR_LIT>" , e ) <EOL> self . send ( self . myAddress , ActorExitRequest ( ) ) <EOL> raise <EOL> self . wakeupAfter ( timedelta ( milliseconds = <NUM_LIT:20> ) ) <EOL> def receiveMsg_ActorExitRequest ( self , m , sender ) : <EOL> """<STR_LIT>""" <EOL> log . info ( "<STR_LIT>" ) <EOL> self . running = False <EOL> self . epoll . close ( ) <EOL> self . ws . close ( ) <EOL> def receiveMessage ( self , m , sender ) : <EOL> handler = { WakeupMessage : self . receiveMsg_WakeupMessage , <EOL> Start_Websocket : self . receiveMsg_Start_Websocket , <EOL> Websocket_Input : self . receiveMsg_Websocket_Input , <EOL> ActorExitRequest : self . receiveMsg_ActorExitRequest <EOL> } . get ( type ( m ) , None ) <EOL> if handler is None : <EOL> log . error ( "<STR_LIT>" , m , sender ) <EOL> return <EOL> handler ( m , sender ) </s>
