summaryrefslogtreecommitdiff
path: root/sleekxmpp/xmlstream/handler/waiter.py
diff options
context:
space:
mode:
Diffstat (limited to 'sleekxmpp/xmlstream/handler/waiter.py')
-rw-r--r--sleekxmpp/xmlstream/handler/waiter.py108
1 files changed, 81 insertions, 27 deletions
diff --git a/sleekxmpp/xmlstream/handler/waiter.py b/sleekxmpp/xmlstream/handler/waiter.py
index 7c4330a4..0e5206b2 100644
--- a/sleekxmpp/xmlstream/handler/waiter.py
+++ b/sleekxmpp/xmlstream/handler/waiter.py
@@ -5,32 +5,86 @@
See the file LICENSE for copying permission.
"""
-from . import base
+
+import logging
try:
- import queue
+ import queue
except ImportError:
- import Queue as queue
-import logging
-from .. stanzabase import StanzaBase
-
-class Waiter(base.BaseHandler):
-
- def __init__(self, name, matcher):
- base.BaseHandler.__init__(self, name, matcher)
- self._payload = queue.Queue()
-
- def prerun(self, payload):
- self._payload.put(payload)
-
- def run(self, payload):
- pass
-
- def wait(self, timeout=60):
- try:
- return self._payload.get(True, timeout)
- except queue.Empty:
- logging.warning("Timed out waiting for %s" % self.name)
- return False
-
- def checkDelete(self):
- return True
+ import Queue as queue
+
+from sleekxmpp.xmlstream import StanzaBase, RESPONSE_TIMEOUT
+from sleekxmpp.xmlstream.handler.base import BaseHandler
+
+
+class Waiter(BaseHandler):
+
+ """
+ The Waiter handler allows an event handler to block
+ until a particular stanza has been received. The handler
+ will either be given the matched stanza, or False if the
+ waiter has timed out.
+
+ Methods:
+ checkDelete -- Overrides BaseHandler.checkDelete
+ prerun -- Overrides BaseHandler.prerun
+ run -- Overrides BaseHandler.run
+ wait -- Wait for a stanza to arrive and return it to
+ an event handler.
+ """
+
+ def __init__(self, name, matcher, stream=None):
+ BaseHandler.__init__(self, name, matcher)
+ self._payload = queue.Queue()
+
+ def prerun(self, payload):
+ """
+ Store the matched stanza.
+
+ Overrides BaseHandler.prerun
+
+ Arguments:
+ payload -- The matched stanza object.
+ """
+ self._payload.put(payload)
+
+ def run(self, payload):
+ """
+ Do not process this handler during the main event loop.
+
+ Overrides BaseHandler.run
+
+ Arguments:
+ payload -- The matched stanza object.
+ """
+ pass
+
+ def wait(self, timeout=RESPONSE_TIMEOUT):
+ """
+ Block an event handler while waiting for a stanza to arrive.
+
+ Be aware that this will impact performance if called from a
+ non-threaded event handler.
+
+ Will return either the received stanza, or False if the waiter
+ timed out.
+
+ Arguments:
+ timeout -- The number of seconds to wait for the stanza to
+ arrive. Defaults to the global default timeout
+ value sleekxmpp.xmlstream.RESPONSE_TIMEOUT.
+ """
+ try:
+ stanza = self._payload.get(True, timeout)
+ except queue.Empty:
+ stanza = False
+ logging.warning("Timed out waiting for %s" % self.name)
+ self.stream.removeHandler(self.name)
+ return stanza
+
+ def checkDelete(self):
+ """
+ Always remove waiters after use.
+
+ Overrides BaseHandler.checkDelete
+ """
+ return True