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set field so the protocol object can easily get factor instance. add ability to add observers for specific events and dispatch events to observers. still more work needed there, since there is no relation between observers and what events are subscribed from freeswitch

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9528 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Traun Leyden 2008-09-11 21:12:43 +00:00
parent 23af87b4bd
commit 5c1982a295
1 changed files with 27 additions and 2 deletions
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27
scripts/socket/freepy/fseventlistener.py
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@ -140,7 +140,7 @@ class FreeswitchEventListener(LineReceiver):
def eventReceived(self, event_xml_str): def eventReceived(self, event_xml_str):
""" """
should be overridden by subclasses should be overridden by subclasses.
""" """
raise Exception("This is an abstract class, should be overridden " raise Exception("This is an abstract class, should be overridden "
"in a subclass") "in a subclass")
@ -153,6 +153,9 @@ class FreeswitchEventListenerFactory(ClientFactory):
should be a subclass of a FreeswitchEventListener should be a subclass of a FreeswitchEventListener
""" """
# dictionary of observers. key: event name, value: list of observers
self.event2observer = {}
self.protoclass=protoclass self.protoclass=protoclass
if host: if host:
@ -166,6 +169,27 @@ class FreeswitchEventListenerFactory(ClientFactory):
self.connection_deferred = None self.connection_deferred = None
self.num_attempts = 0 self.num_attempts = 0
def addobserver(self, event_name, observer):
"""
@param event_name, eg "CHANNEL_ANSWER"
@param observer (instance of object that has an eventReceived() method
"""
observers = self.event2observer.get(event_name, [])
observers.append(observer)
self.event2observer[event_name] = observers
def dispatch2observers(self, event_name, event_xml_str, event_dom):
"""
called back by the underlying protocol upon receiving an
event from freeswitch. Currently subclasses must explicitly
call this method from their eventReceived method for observers
to get the message. TODO: move this call to FreeswitchEventListener
and use observer pattern instead of any subclassing.
"""
observers = self.event2observer.get(event_name, [])
for observer in observers:
observer.eventReceived(event_name, event_xml_str, event_dom)
def reset(self): def reset(self):
self.protocol = None self.protocol = None
self.connection_deferred = None self.connection_deferred = None
@ -191,6 +215,7 @@ class FreeswitchEventListenerFactory(ClientFactory):
def conncb(self, protocol): def conncb(self, protocol):
self.protocol = protocol self.protocol = protocol
self.protocol.__dict__["factory"] = self
deferred2callback = self.connection_deferred deferred2callback = self.connection_deferred
self.connection_deferred = None self.connection_deferred = None
deferred2callback.callback(self.protocol) deferred2callback.callback(self.protocol)