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########################################################################
# File name: pubsub_watch.py
# This file is part of: aioxmpp
#
# LICENSE
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program. If not, see
# <http://www.gnu.org/licenses/>.
#
########################################################################
import asyncio
import itertools
import aioxmpp
import aioxmpp.pubsub
import aioxmpp.xml
import lxml.etree as etree
from framework import Example, exec_example
class PubSubWatch(Example):
def prepare_argparse(self):
super().prepare_argparse()
# this gives a nicer name in argparse errors
def jid(s):
return aioxmpp.JID.fromstr(s)
self.argparse.add_argument(
"target_entity",
type=jid
)
self.argparse.add_argument(
"target_node",
default=None,
nargs="?",
)
async def run_example(self):
self.stop_event = self.make_sigint_event()
await super().run_example()
def _on_item_published(self, jid, node, item, *, message=None):
print("PUBLISHED: {}".format(item.id_), etree.tostring(item.unregistered_payload))
def _on_item_retracted(self, jid, node, id_, *, message=None):
print("RETRACTED: {}".format(id_))
async def run_simple_example(self):
pubsub = self.client.summon(aioxmpp.PubSubClient)
pubsub.on_item_published.connect(self._on_item_published)
pubsub.on_item_retracted.connect(self._on_item_retracted)
subid = (await pubsub.subscribe(
self.args.target_entity,
node=self.args.target_node,
)).payload.subid
print("SUBSCRIBED: subid={!r}".format(subid))
try:
await self.stop_event.wait()
finally:
await pubsub.unsubscribe(
self.args.target_entity,
node=self.args.target_node,
subid=subid,
)
if __name__ == "__main__":
exec_example(PubSubWatch())
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