85 lines
2.4 KiB
Python
85 lines
2.4 KiB
Python
"""
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@file packet_handler.py
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@date 2009-02-02
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Contributors can be viewed at:
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http://svn.secondlife.com/svn/linden/projects/2008/pyogp/CONTRIBUTORS.txt
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$LicenseInfo:firstyear=2008&license=apachev2$
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Copyright 2008, Linden Research, Inc.
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Licensed under the Apache License, Version 2.0 (the "License").
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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or in
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http://svn.secondlife.com/svn/linden/projects/2008/pyogp/LICENSE.txt
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$/LicenseInfo$
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"""
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# standard python libs
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from logging import getLogger, CRITICAL, ERROR, WARNING, INFO, DEBUG
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from pyogp.lib.base.utilities.events import Event
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# initialize logging
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logger = getLogger('...base.message.packet_handler')
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log = logger.log
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class PacketHandler():
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""" general class handling individual packets """
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def __init__(self):
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""" i do nothing """
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pass
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def _register_callback(self, packet_name):
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log(DEBUG, 'Creating a callback watcher for %s' % (packet_name))
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# create an attribute that is the event notifier (PacketReceivedNotifier)
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# TemplateDictionary.get_template_list() will provide all the proper names
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# for use here (aka packetnames)
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if not self.__dict__.has_key(packet_name + "_Received"):
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setattr(self, packet_name + "_Received", PacketReceivedNotifier(packet_name))
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# return the attribute (an instance of PacketReceivedNotifier)
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return getattr(self, packet_name + "_Received")
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def _handle(self, packet):
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""" essentially a case statement to pass packets to event notifiers in the form of self attributes """
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try:
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# get the attribute of the self object called packet.name + Received
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handler = getattr(self, packet.name + "_Received")
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# Handle the packet if we have subscribers
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# Conveniently, this will also enable verbose packet logging
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if len(handler) > 0:
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log(DEBUG, 'Handling packet: %s' % (packet.name))
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handler(packet)
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except AttributeError:
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#log(INFO, "Received an unhandled packet: %s" % (packet.name))
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pass
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class PacketReceivedNotifier():
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""" received TestMessage packet """
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def __init__(self, packet_name):
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self.event = Event()
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self.packet_name = packet_name
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def received(self, packet):
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self.event(packet)
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def __len__(self):
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return len(self.event)
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__call__ = received
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