#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 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 synapse
from synapse.server import HomeServer
from synapse.config._base import ConfigError
from synapse.config.logger import setup_logging
from synapse.config.homeserver import HomeServerConfig
from synapse.http.site import SynapseSite
from synapse.metrics.resource import MetricsResource, METRICS_PREFIX
from synapse.storage.roommember import RoomMemberStore
from synapse.replication.slave.storage.events import SlavedEventStore
from synapse.replication.slave.storage.pushers import SlavedPusherStore
from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
from synapse.replication.slave.storage.account_data import SlavedAccountDataStore
from synapse.storage.engines import create_engine
from synapse.storage import DataStore
from synapse.util.async import sleep
from synapse.util.httpresourcetree import create_resource_tree
from synapse.util.logcontext import LoggingContext, preserve_fn
from synapse.util.manhole import manhole
from synapse.util.rlimit import change_resource_limit
from synapse.util.versionstring import get_version_string
from twisted.internet import reactor, defer
from twisted.web.resource import Resource
from daemonize import Daemonize
import sys
import logging
import gc
logger = logging.getLogger("synapse.app.pusher")
class PusherSlaveStore(
SlavedEventStore, SlavedPusherStore, SlavedReceiptsStore,
SlavedAccountDataStore
):
update_pusher_last_stream_ordering_and_success = (
DataStore.update_pusher_last_stream_ordering_and_success.__func__
)
update_pusher_failing_since = (
DataStore.update_pusher_failing_since.__func__
)
update_pusher_last_stream_ordering = (
DataStore.update_pusher_last_stream_ordering.__func__
)
get_throttle_params_by_room = (
DataStore.get_throttle_params_by_room.__func__
)
set_throttle_params = (
DataStore.set_throttle_params.__func__
)
get_time_of_last_push_action_before = (
DataStore.get_time_of_last_push_action_before.__func__
)
get_profile_displayname = (
DataStore.get_profile_displayname.__func__
)
# XXX: This is a bit broken because we don't persist forgotten rooms
# in a way that they can be streamed. This means that we don't have a
# way to invalidate the forgotten rooms cache correctly.
# For now we expire the cache every 10 minutes.
BROKEN_CACHE_EXPIRY_MS = 60 * 60 * 1000
who_forgot_in_room = (
RoomMemberStore.__dict__["who_forgot_in_room"]
)
class PusherServer(HomeServer):
def get_db_conn(self, run_new_connection=True):
# Any param beginning with cp_ is a parameter for adbapi, and should
# not be passed to the database engine.
db_params = {
k: v for k, v in self.db_config.get("args", {}).items()
if not k.startswith("cp_")
}
db_conn = self.database_engine.module.connect(**db_params)
if run_new_connection:
self.database_engine.on_new_connection(db_conn)
return db_conn
def setup(self):
logger.info("Setting up.")
self.datastore = PusherSlaveStore(self.get_db_conn(), self)
logger.info("Finished setting up.")
def remove_pusher(self, app_id, push_key, user_id):
http_client = self.get_simple_http_client()
replication_url = self.config.worker_replication_url
url = replication_url + "/remove_pushers"
return http_client.post_json_get_json(url, {
"remove": [{
"app_id": app_id,
"push_key": push_key,
"user_id": user_id,
}]
})
def _listen_http(self, listener_config):
port = listener_config["port"]
bind_address = listener_config.get("bind_address", "")
site_tag = listener_config.get("tag", port)
resources = {}
for res in listener_config["resources"]:
for name in res["names"]:
if name == "metrics":
resources[METRICS_PREFIX] = MetricsResource(self)
root_resource = create_resource_tree(resources, Resource())
reactor.listenTCP(
port,
SynapseSite(
"synapse.access.http.%s" % (site_tag,),
site_tag,
listener_config,
root_resource,
),
interface=bind_address
)
logger.info("Synapse pusher now listening on port %d", port)
def start_listening(self, listeners):
for listener in listeners:
if listener["type"] == "http":
self._listen_http(listener)
elif listener["type"] == "manhole":
reactor.listenTCP(
listener["port"],
manhole(
username="matrix",
password="rabbithole",
globals={"hs": self},
),
interface=listener.get("bind_address", '127.0.0.1')
)
else:
logger.warn("Unrecognized listener type: %s", listener["type"])
@defer.inlineCallbacks
def replicate(self):
http_client = self.get_simple_http_client()
store = self.get_datastore()
replication_url = self.config.worker_replication_url
pusher_pool = self.get_pusherpool()
clock = self.get_clock()
def stop_pusher(user_id, app_id, pushkey):
key = "%s:%s" % (app_id, pushkey)
pushers_for_user = pusher_pool.pushers.get(user_id, {})
pusher = pushers_for_user.pop(key, None)
if pusher is None:
return
logger.info("Stopping pusher %r / %r", user_id, key)
pusher.on_stop()
def start_pusher(user_id, app_id, pushkey):
key = "%s:%s" % (app_id, pushkey)
logger.info("Starting pusher %r / %r", user_id, key)
return pusher_pool._refresh_pusher(app_id, pushkey, user_id)
@defer.inlineCallbacks
def poke_pushers(results):
pushers_rows = set(
map(tuple, results.get("pushers", {}).get("rows", []))
)
deleted_pushers_rows = set(
map(tuple, results.get("deleted_pushers", {}).get("rows", []))
)
for row in sorted(pushers_rows | deleted_pushers_rows):
if row in deleted_pushers_rows:
user_id, app_id, pushkey = row[1:4]
stop_pusher(user_id, app_id, pushkey)
elif row in pushers_rows:
user_id = row[1]
app_id = row[5]
pushkey = row[8]
yield start_pusher(user_id, app_id, pushkey)
stream = results.get("events")
if stream:
min_stream_id = stream["rows"][0][0]
max_stream_id = stream["position"]
preserve_fn(pusher_pool.on_new_notifications)(
min_stream_id, max_stream_id
)
stream = results.get("receipts")
if stream:
rows = stream["rows"]
affected_room_ids = set(row[1] for row in rows)
min_stream_id = rows[0][0]
max_stream_id = stream["position"]
preserve_fn(pusher_pool.on_new_receipts)(
min_stream_id, max_stream_id, affected_room_ids
)
def expire_broken_caches():
store.who_forgot_in_room.invalidate_all()
next_expire_broken_caches_ms = 0
while True:
try:
args = store.stream_positions()
args["timeout"] = 30000
result = yield http_client.get_json(replication_url, args=args)
now_ms = clock.time_msec()
if now_ms > next_expire_broken_caches_ms:
expire_broken_caches()
next_expire_broken_caches_ms = (
now_ms + store.BROKEN_CACHE_EXPIRY_MS
)
yield store.process_replication(result)
poke_pushers(result)
except:
logger.exception("Error replicating from %r", replication_url)
yield sleep(30)
def start(config_options):
try:
config = HomeServerConfig.load_config(
"Synapse pusher", config_options
)
except ConfigError as e:
sys.stderr.write("\n" + e.message + "\n")
sys.exit(1)
assert config.worker_app == "synapse.app.pusher"
setup_logging(config.worker_log_config, config.worker_log_file)
if config.start_pushers:
sys.stderr.write(
"\nThe pushers must be disabled in the main synapse process"
"\nbefore they can be run in a separate worker."
"\nPlease add ``start_pushers: false`` to the main config"
"\n"
)
sys.exit(1)
# Force the pushers to start since they will be disabled in the main config
config.start_pushers = True
database_engine = create_engine(config.database_config)
ps = PusherServer(
config.server_name,
db_config=config.database_config,
config=config,
version_string=get_version_string("Synapse", synapse),
database_engine=database_engine,
)
ps.setup()
ps.start_listening(config.worker_listeners)
def run():
with LoggingContext("run"):
logger.info("Running")
change_resource_limit(config.soft_file_limit)
if config.gc_thresholds:
gc.set_threshold(*config.gc_thresholds)
reactor.run()
def start():
ps.replicate()
ps.get_pusherpool().start()
ps.get_datastore().start_profiling()
reactor.callWhenRunning(start)
if config.worker_daemonize:
daemon = Daemonize(
app="synapse-pusher",
pid=config.worker_pid_file,
action=run,
auto_close_fds=False,
verbose=True,
logger=logger,
)
daemon.start()
else:
run()
if __name__ == '__main__':
with LoggingContext("main"):
ps = start(sys.argv[1:])