/usr/lib/python3/dist-packages/slixmpp/xmlstream/handler/collector.py is in python3-slixmpp 1.2.2-1.1.
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"""
slixmpp.xmlstream.handler.collector
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Part of Slixmpp: The Slick XMPP Library
:copyright: (c) 2012 Nathanael C. Fritz, Lance J.T. Stout
:license: MIT, see LICENSE for more details
"""
import logging
from queue import Queue, Empty
from slixmpp.xmlstream.handler.base import BaseHandler
log = logging.getLogger(__name__)
class Collector(BaseHandler):
"""
The Collector handler allows for collecting a set of stanzas
that match a given pattern. Unlike the Waiter handler, a
Collector does not block execution, and will continue to
accumulate matching stanzas until told to stop.
:param string name: The name of the handler.
:param matcher: A :class:`~slixmpp.xmlstream.matcher.base.MatcherBase`
derived object for matching stanza objects.
:param stream: The :class:`~slixmpp.xmlstream.xmlstream.XMLStream`
instance this handler should monitor.
"""
def __init__(self, name, matcher, stream=None):
BaseHandler.__init__(self, name, matcher, stream=stream)
self._payload = Queue()
def prerun(self, payload):
"""Store the matched stanza when received during processing.
:param payload: The matched
:class:`~slixmpp.xmlstream.stanzabase.ElementBase` object.
"""
self._payload.put(payload)
def run(self, payload):
"""Do not process this handler during the main event loop."""
pass
def stop(self):
"""
Stop collection of matching stanzas, and return the ones that
have been stored so far.
"""
self._destroy = True
results = []
try:
while True:
results.append(self._payload.get(False))
except Empty:
pass
self.stream().remove_handler(self.name)
return results
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