try:
from sys import version_info
except ImportError:
version_info = ( 0, 0 ) # a really early version
from time import time
from select import select
from asyncore import socket_map
from pysnmp.carrier.base import AbstractTransportDispatcher
# Old asyncore doesn't allow socket_map param at poll
if version_info < (2, 0):
def poll(timeout, socket_map):
if not socket_map:
return
sockets = socket_map.keys()
r = filter(lambda x: x.readable(), sockets)
w = filter(lambda x: x.writable(), sockets)
(r,w,e) = select(r, w, [], timeout)
for x in r:
try:
x.handle_read_event()
except:
x.handle_error()
for x in w:
try:
x.handle_write_event()
except:
x.handle_error()
else:
from asyncore import poll
class AsynsockDispatcher(AbstractTransportDispatcher):
"""Implements I/O over asynchronous sockets"""
def __init__(self):
self.__sockMap = {} # use own map for MT safety
self.timeout = 1.0
AbstractTransportDispatcher.__init__(self)
def getSocketMap(self): return self.__sockMap
def setSocketMap(self, sockMap=socket_map): self.__sockMap = sockMap
def registerTransport(self, tDomain, t):
AbstractTransportDispatcher.registerTransport(self, tDomain, t)
t.registerSocket(self.__sockMap)
def unregisterTransport(self, tDomain):
self.getTransport(tDomain).unregisterSocket(self.__sockMap)
AbstractTransportDispatcher.unregisterTransport(self, tDomain)
def transportsAreWorking(self):
for transport in self.__sockMap.values():
if transport.writable():
return 1
return 0
def runDispatcher(self, timeout=0.0):
while self.jobsArePending() or self.transportsAreWorking():
poll(self.timeout, self.__sockMap)
self.handleTimerTick(time())
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