From 9f1648328f17b608651989606b9cf2636cdcfbec Mon Sep 17 00:00:00 2001 From: Lance Stout Date: Fri, 20 May 2011 12:56:00 -0400 Subject: Resolve timeout errors for get_roster. See issue #89 Using get_roster will now return the same types of values as Iq.send. If a timeout occurs, then the event 'roster_timeout' will be fired. A successful call to get_roster will also raise the 'roster_received' event. To ensure that the get_roster call was successful, here is a pattern to follow: def __init__(self, ...): ... self.add_event_handler('session_start', self.session_start) self.add_event_handler('roster_timeout', self.roster_timeout) self.add_event_handler('roster_received', self.roster_received) def session_start(self, e): self.send_presence() self.get_roster() def roster_timeout(self, e): # Optionally increase the timeout period self.get_roster(timeout=self.response_timeout * 2) def roster_received(self, iq): # Do stuff, roster has been initialized. ... --- sleekxmpp/clientxmpp.py | 53 ++++++++++++++++++++++++----- tests/test_stream_roster.py | 81 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 126 insertions(+), 8 deletions(-) diff --git a/sleekxmpp/clientxmpp.py b/sleekxmpp/clientxmpp.py index 20cc9417..c518a4ce 100644 --- a/sleekxmpp/clientxmpp.py +++ b/sleekxmpp/clientxmpp.py @@ -206,7 +206,8 @@ class ClientXMPP(BaseXMPP): pointer, breaker)) - def update_roster(self, jid, name=None, subscription=None, groups=[]): + def update_roster(self, jid, name=None, subscription=None, groups=[], + block=True, timeout=None, callback=None): """ Add or change a roster item. @@ -217,12 +218,24 @@ class ClientXMPP(BaseXMPP): 'to', 'from', 'both', or 'none'. If set to 'remove', the entry will be deleted. groups -- The roster groups that contain this item. + block -- Specify if the roster request will block + until a response is received, or a timeout + occurs. Defaults to True. + timeout -- The length of time (in seconds) to wait + for a response before continuing if blocking + is used. Defaults to self.response_timeout. + callback -- Optional reference to a stream handler function. + Will be executed when the roster is received. + Implies block=False. """ - iq = self.Iq()._set_stanza_values({'type': 'set'}) + iq = self.Iq() + iq['type'] = 'set' iq['roster']['items'] = {jid: {'name': name, 'subscription': subscription, 'groups': groups}} - response = iq.send() + response = iq.send(block, timeout, callback) + if response in [False, None]: + return response return response['type'] == 'result' def del_roster_item(self, jid): @@ -235,11 +248,33 @@ class ClientXMPP(BaseXMPP): """ return self.update_roster(jid, subscription='remove') - def get_roster(self): - """Request the roster from the server.""" - iq = self.Iq()._set_stanza_values({'type': 'get'}).enable('roster') - response = iq.send() - self._handle_roster(response, request=True) + def get_roster(self, block=True, timeout=None, callback=None): + """ + Request the roster from the server. + + Arguments: + block -- Specify if the roster request will block until a + response is received, or a timeout occurs. + Defaults to True. + timeout -- The length of time (in seconds) to wait for a response + before continuing if blocking is used. + Defaults to self.response_timeout. + callback -- Optional reference to a stream handler function. Will + be executed when the roster is received. + Implies block=False. + """ + iq = self.Iq() + iq['type'] = 'get' + iq.enable('roster') + response = iq.send(block, timeout, callback) + + if response == False: + self.event('roster_timeout') + + if response in [False, None] or not isinstance(response, Iq): + return response + else: + return self._handle_roster(response, request=True) def _handle_stream_features(self, features): """ @@ -431,12 +466,14 @@ class ClientXMPP(BaseXMPP): 'presence': {}, 'in_roster': True} self.roster[jid].update(iq['roster']['items'][jid]) + self.event('roster_received', iq) self.event("roster_update", iq) if iq['type'] == 'set': iq.reply() iq.enable('roster') iq.send() + return True # To comply with PEP8, method names now use underscores. diff --git a/tests/test_stream_roster.py b/tests/test_stream_roster.py index 165a8bc9..731d1145 100644 --- a/tests/test_stream_roster.py +++ b/tests/test_stream_roster.py @@ -16,6 +16,13 @@ class TestStreamRoster(SleekTest): self.stream_start(mode='client') self.failUnless(self.xmpp.roster == {}, "Initial roster not empty.") + events = [] + + def roster_received(iq): + events.append('roster_received') + + self.xmpp.add_event_handler('roster_received', roster_received) + # Since get_roster blocks, we need to run it in a thread. t = threading.Thread(name='get_roster', target=self.xmpp.get_roster) t.start() @@ -41,6 +48,9 @@ class TestStreamRoster(SleekTest): # Wait for get_roster to return. t.join() + # Give the event queue time to process. + time.sleep(.1) + roster = {'user@localhost': {'name': 'User', 'subscription': 'both', 'groups': ['Friends', 'Examples'], @@ -48,11 +58,20 @@ class TestStreamRoster(SleekTest): 'in_roster': True}} self.failUnless(self.xmpp.roster == roster, "Unexpected roster values: %s" % self.xmpp.roster) + self.failUnless('roster_received' in events, + "Roster received event not triggered: %s" % events) def testRosterSet(self): """Test handling pushed roster updates.""" self.stream_start(mode='client') self.failUnless(self.xmpp.roster == {}, "Initial roster not empty.") + events = [] + + def roster_update(e): + events.append('roster_update') + + self.xmpp.add_event_handler('roster_update', roster_update) + self.recv(""" @@ -72,6 +91,9 @@ class TestStreamRoster(SleekTest): """) + # Give the event queue time to process. + time.sleep(.1) + roster = {'user@localhost': {'name': 'User', 'subscription': 'both', 'groups': ['Friends', 'Examples'], @@ -79,7 +101,66 @@ class TestStreamRoster(SleekTest): 'in_roster': True}} self.failUnless(self.xmpp.roster == roster, "Unexpected roster values: %s" % self.xmpp.roster) + self.failUnless('roster_update' in events, + "Roster updated event not triggered: %s" % events) + + def testRosterTimeout(self): + """Test handling a timed out roster request.""" + self.stream_start() + events = [] + + def roster_timeout(event): + events.append('roster_timeout') + + self.xmpp.add_event_handler('roster_timeout', roster_timeout) + self.xmpp.get_roster(timeout=0) + + # Give the event queue time to process. + time.sleep(.1) + + self.failUnless(events == ['roster_timeout'], + "Roster timeout event not triggered: %s." % events) + + def testRosterCallback(self): + """Test handling a roster request callback.""" + self.stream_start() + events = [] + + def roster_callback(iq): + events.append('roster_callback') + + # Since get_roster blocks, we need to run it in a thread. + t = threading.Thread(name='get_roster', + target=self.xmpp.get_roster, + kwargs={'callback': roster_callback}) + t.start() + + self.send(""" + + + + """) + self.recv(""" + + + + Friends + Examples + + + + """) + + # Wait for get_roster to return. + t.join() + + # Give the event queue time to process. + time.sleep(.1) + self.failUnless(events == ['roster_callback'], + "Roster timeout event not triggered: %s." % events) -- cgit v1.2.3