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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 2015, 2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from twisted.internet import defer
from synapse.push.pusher import PusherFactory
from synapse.util.logcontext import make_deferred_yieldable, run_in_background
logger = logging.getLogger(__name__)
class PusherPool:
def __init__(self, _hs):
self.hs = _hs
self.pusher_factory = PusherFactory(_hs)
self.start_pushers = _hs.config.start_pushers
self.store = self.hs.get_datastore()
self.clock = self.hs.get_clock()
self.pushers = {}
@defer.inlineCallbacks
def start(self):
pushers = yield self.store.get_all_pushers()
self._start_pushers(pushers)
@defer.inlineCallbacks
def add_pusher(self, user_id, access_token, kind, app_id,
app_display_name, device_display_name, pushkey, lang, data,
profile_tag=""):
time_now_msec = self.clock.time_msec()
# we try to create the pusher just to validate the config: it
# will then get pulled out of the database,
# recreated, added and started: this means we have only one
# code path adding pushers.
self.pusher_factory.create_pusher({
"id": None,
"user_name": user_id,
"kind": kind,
"app_id": app_id,
"app_display_name": app_display_name,
"device_display_name": device_display_name,
"pushkey": pushkey,
"ts": time_now_msec,
"lang": lang,
"data": data,
"last_stream_ordering": None,
"last_success": None,
"failing_since": None
})
# create the pusher setting last_stream_ordering to the current maximum
# stream ordering in event_push_actions, so it will process
# pushes from this point onwards.
last_stream_ordering = (
yield self.store.get_latest_push_action_stream_ordering()
)
yield self.store.add_pusher(
user_id=user_id,
access_token=access_token,
kind=kind,
app_id=app_id,
app_display_name=app_display_name,
device_display_name=device_display_name,
pushkey=pushkey,
pushkey_ts=time_now_msec,
lang=lang,
data=data,
last_stream_ordering=last_stream_ordering,
profile_tag=profile_tag,
)
yield self._refresh_pusher(app_id, pushkey, user_id)
@defer.inlineCallbacks
def remove_pushers_by_app_id_and_pushkey_not_user(self, app_id, pushkey,
not_user_id):
to_remove = yield self.store.get_pushers_by_app_id_and_pushkey(
app_id, pushkey
)
for p in to_remove:
if p['user_name'] != not_user_id:
logger.info(
"Removing pusher for app id %s, pushkey %s, user %s",
app_id, pushkey, p['user_name']
)
yield self.remove_pusher(p['app_id'], p['pushkey'], p['user_name'])
@defer.inlineCallbacks
def remove_pushers_by_access_token(self, user_id, access_tokens):
"""Remove the pushers for a given user corresponding to a set of
access_tokens.
Args:
user_id (str): user to remove pushers for
access_tokens (Iterable[int]): access token *ids* to remove pushers
for
"""
tokens = set(access_tokens)
for p in (yield self.store.get_pushers_by_user_id(user_id)):
if p['access_token'] in tokens:
logger.info(
"Removing pusher for app id %s, pushkey %s, user %s",
p['app_id'], p['pushkey'], p['user_name']
)
yield self.remove_pusher(
p['app_id'], p['pushkey'], p['user_name'],
)
@defer.inlineCallbacks
def on_new_notifications(self, min_stream_id, max_stream_id):
try:
users_affected = yield self.store.get_push_action_users_in_range(
min_stream_id, max_stream_id
)
deferreds = []
for u in users_affected:
if u in self.pushers:
for p in self.pushers[u].values():
deferreds.append(
run_in_background(
p.on_new_notifications,
min_stream_id, max_stream_id,
)
)
yield make_deferred_yieldable(
defer.gatherResults(deferreds, consumeErrors=True),
)
except Exception:
logger.exception("Exception in pusher on_new_notifications")
@defer.inlineCallbacks
def on_new_receipts(self, min_stream_id, max_stream_id, affected_room_ids):
try:
# Need to subtract 1 from the minimum because the lower bound here
# is not inclusive
updated_receipts = yield self.store.get_all_updated_receipts(
min_stream_id - 1, max_stream_id
)
# This returns a tuple, user_id is at index 3
users_affected = set([r[3] for r in updated_receipts])
deferreds = []
for u in users_affected:
if u in self.pushers:
for p in self.pushers[u].values():
deferreds.append(
run_in_background(
p.on_new_receipts,
min_stream_id, max_stream_id,
)
)
yield make_deferred_yieldable(
defer.gatherResults(deferreds, consumeErrors=True),
)
except Exception:
logger.exception("Exception in pusher on_new_receipts")
@defer.inlineCallbacks
def _refresh_pusher(self, app_id, pushkey, user_id):
resultlist = yield self.store.get_pushers_by_app_id_and_pushkey(
app_id, pushkey
)
p = None
for r in resultlist:
if r['user_name'] == user_id:
p = r
if p:
self._start_pushers([p])
def _start_pushers(self, pushers):
if not self.start_pushers:
logger.info("Not starting pushers because they are disabled in the config")
return
logger.info("Starting %d pushers", len(pushers))
for pusherdict in pushers:
try:
p = self.pusher_factory.create_pusher(pusherdict)
except Exception:
logger.exception("Couldn't start a pusher: caught Exception")
continue
if p:
appid_pushkey = "%s:%s" % (
pusherdict['app_id'],
pusherdict['pushkey'],
)
byuser = self.pushers.setdefault(pusherdict['user_name'], {})
if appid_pushkey in byuser:
byuser[appid_pushkey].on_stop()
byuser[appid_pushkey] = p
run_in_background(p.on_started)
logger.info("Started pushers")
@defer.inlineCallbacks
def remove_pusher(self, app_id, pushkey, user_id):
appid_pushkey = "%s:%s" % (app_id, pushkey)
byuser = self.pushers.get(user_id, {})
if appid_pushkey in byuser:
logger.info("Stopping pusher %s / %s", user_id, appid_pushkey)
byuser[appid_pushkey].on_stop()
del byuser[appid_pushkey]
yield self.store.delete_pusher_by_app_id_pushkey_user_id(
app_id, pushkey, user_id
)
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