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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 2015 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.
from twisted.internet import defer
from httppusher import HttpPusher
from synapse.push import PusherConfigException
from syutil.jsonutil import encode_canonical_json
import logging
import simplejson as json
logger = logging.getLogger(__name__)
class PusherPool:
def __init__(self, _hs):
self.hs = _hs
self.store = self.hs.get_datastore()
self.pushers = {}
self.last_pusher_started = -1
distributor = self.hs.get_distributor()
distributor.observe(
"user_presence_changed", self.user_presence_changed
)
@defer.inlineCallbacks
def user_presence_changed(self, user, state):
user_name = user.to_string()
# until we have read receipts, pushers use this to reset a user's
# badge counters to zero
for p in self.pushers.values():
if p.user_name == user_name:
yield p.presence_changed(state)
@defer.inlineCallbacks
def start(self):
pushers = yield self.store.get_all_pushers()
for p in pushers:
p['data'] = json.loads(p['data'])
self._start_pushers(pushers)
@defer.inlineCallbacks
def add_pusher(self, user_name, access_token, profile_tag, kind, app_id,
app_display_name, device_display_name, pushkey, lang, data):
# 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._create_pusher({
"user_name": user_name,
"kind": kind,
"profile_tag": profile_tag,
"app_id": app_id,
"app_display_name": app_display_name,
"device_display_name": device_display_name,
"pushkey": pushkey,
"pushkey_ts": self.hs.get_clock().time_msec(),
"lang": lang,
"data": data,
"last_token": None,
"last_success": None,
"failing_since": None
})
yield self._add_pusher_to_store(
user_name, access_token, profile_tag, kind, app_id,
app_display_name, device_display_name,
pushkey, lang, data
)
@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']
)
self.remove_pusher(p['app_id'], p['pushkey'], p['user_name'])
@defer.inlineCallbacks
def _add_pusher_to_store(self, user_name, access_token, profile_tag, kind,
app_id, app_display_name, device_display_name,
pushkey, lang, data):
yield self.store.add_pusher(
user_name=user_name,
access_token=access_token,
profile_tag=profile_tag,
kind=kind,
app_id=app_id,
app_display_name=app_display_name,
device_display_name=device_display_name,
pushkey=pushkey,
pushkey_ts=self.hs.get_clock().time_msec(),
lang=lang,
data=encode_canonical_json(data).decode("UTF-8"),
)
self._refresh_pusher(app_id, pushkey, user_name)
def _create_pusher(self, pusherdict):
if pusherdict['kind'] == 'http':
return HttpPusher(
self.hs,
profile_tag=pusherdict['profile_tag'],
user_name=pusherdict['user_name'],
app_id=pusherdict['app_id'],
app_display_name=pusherdict['app_display_name'],
device_display_name=pusherdict['device_display_name'],
pushkey=pusherdict['pushkey'],
pushkey_ts=pusherdict['pushkey_ts'],
data=pusherdict['data'],
last_token=pusherdict['last_token'],
last_success=pusherdict['last_success'],
failing_since=pusherdict['failing_since']
)
else:
raise PusherConfigException(
"Unknown pusher type '%s' for user %s" %
(pusherdict['kind'], pusherdict['user_name'])
)
@defer.inlineCallbacks
def _refresh_pusher(self, app_id, pushkey, user_name):
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_name:
p = r
if p:
p['data'] = json.loads(p['data'])
self._start_pushers([p])
def _start_pushers(self, pushers):
logger.info("Starting %d pushers", len(pushers))
for pusherdict in pushers:
p = self._create_pusher(pusherdict)
if p:
fullid = "%s:%s:%s" % (
pusherdict['app_id'],
pusherdict['pushkey'],
pusherdict['user_name']
)
if fullid in self.pushers:
self.pushers[fullid].stop()
self.pushers[fullid] = p
p.start()
@defer.inlineCallbacks
def remove_pusher(self, app_id, pushkey, user_name):
fullid = "%s:%s:%s" % (app_id, pushkey, user_name)
if fullid in self.pushers:
logger.info("Stopping pusher %s", fullid)
self.pushers[fullid].stop()
del self.pushers[fullid]
yield self.store.delete_pusher_by_app_id_pushkey_user_name(
app_id, pushkey, user_name
)
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