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+#!/usr/bin/env python
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+# -*- coding: utf-8 -*-
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+# Copyright 2016 OpenMarket Ltd
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+#
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+# Licensed under the Apache License, Version 2.0 (the "License");
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+# you may not use this file except in compliance with the License.
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+# You may obtain a copy of the License at
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+#
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+# http://www.apache.org/licenses/LICENSE-2.0
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+#
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+# Unless required by applicable law or agreed to in writing, software
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+# distributed under the License is distributed on an "AS IS" BASIS,
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+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+# See the License for the specific language governing permissions and
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+# limitations under the License.
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+
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+import synapse
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+
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+from synapse.server import HomeServer
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+from synapse.util.versionstring import get_version_string
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+from synapse.config._base import ConfigError
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+from synapse.config.database import DatabaseConfig
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+from synapse.config.logger import LoggingConfig
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+from synapse.replication.slave.storage.events import SlavedEventStore
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+from synapse.replication.slave.storage.pushers import SlavedPusherStore
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+from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
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+from synapse.storage.engines import create_engine
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+from synapse.storage import DataStore
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+from synapse.util.async import sleep
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+from synapse.util.logcontext import (LoggingContext, preserve_fn)
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+
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+from twisted.internet import reactor, defer
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+
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+import sys
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+import logging
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+
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+logger = logging.getLogger("synapse.app.pusher")
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+
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+
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+class SlaveConfig(DatabaseConfig):
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+ def read_config(self, config):
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+ self.replication_url = config["replication_url"]
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+ self.server_name = config["server_name"]
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+ self.use_insecure_ssl_client_just_for_testing_do_not_use = config.get(
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+ "use_insecure_ssl_client_just_for_testing_do_not_use", False
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+ )
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+ self.user_agent_suffix = None
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+ self.start_pushers = True
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+
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+ def default_config(self, **kwargs):
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+ return """\
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+ ## Slave ##
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+ #replication_url: https://localhost:{replication_port}/_synapse/replication
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+
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+ report_stats: False
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+ """
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+
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+
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+class PusherSlaveConfig(SlaveConfig, LoggingConfig):
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+ pass
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+
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+
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+class PusherSlaveStore(
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+ SlavedEventStore, SlavedPusherStore, SlavedReceiptsStore
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+):
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+ update_pusher_last_stream_ordering_and_success = (
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+ DataStore.update_pusher_last_stream_ordering_and_success.__func__
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+ )
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+
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+
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+class PusherServer(HomeServer):
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+
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+ def get_db_conn(self, run_new_connection=True):
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+ # Any param beginning with cp_ is a parameter for adbapi, and should
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+ # not be passed to the database engine.
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+ db_params = {
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+ k: v for k, v in self.db_config.get("args", {}).items()
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+ if not k.startswith("cp_")
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+ }
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+ db_conn = self.database_engine.module.connect(**db_params)
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+
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+ if run_new_connection:
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+ self.database_engine.on_new_connection(db_conn)
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+ return db_conn
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+
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+ def setup(self):
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+ logger.info("Setting up.")
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+ self.datastore = PusherSlaveStore(self.get_db_conn(), self)
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+ logger.info("Finished setting up.")
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+
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+ def remove_pusher(self, app_id, push_key, user_id):
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+ http_client = self.get_simple_http_client()
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+ replication_url = self.config.replication_url
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+ url = replication_url + "/remove_pushers"
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+ return http_client.post_json_get_json(url, {
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+ "remove": [{
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+ "app_id": app_id,
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+ "push_key": push_key,
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+ "user_id": user_id,
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+ }]
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+ })
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+
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+ @defer.inlineCallbacks
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+ def replicate(self):
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+ http_client = self.get_simple_http_client()
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+ store = self.get_datastore()
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+ replication_url = self.config.replication_url
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+ pusher_pool = self.get_pusherpool()
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+
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+ def stop_pusher(user_id, app_id, pushkey):
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+ key = "%s:%s" % (app_id, pushkey)
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+ pushers_for_user = pusher_pool.pushers.get(user_id, {})
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+ pusher = pushers_for_user.pop(key, None)
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+ if pusher is None:
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+ return
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+ logger.info("Stopping pusher %r / %r", user_id, key)
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+ pusher.on_stop()
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+
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+ def start_pusher(user_id, app_id, pushkey):
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+ key = "%s:%s" % (app_id, pushkey)
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+ logger.info("Starting pusher %r / %r", user_id, key)
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+ return pusher_pool._refresh_pusher(app_id, pushkey, user_id)
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+
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+ @defer.inlineCallbacks
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+ def poke_pushers(results):
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+ pushers_rows = set(
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+ map(tuple, results.get("pushers", {}).get("rows", []))
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+ )
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+ deleted_pushers_rows = set(
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+ map(tuple, results.get("deleted_pushers", {}).get("rows", []))
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+ )
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+ for row in sorted(pushers_rows | deleted_pushers_rows):
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+ if row in deleted_pushers_rows:
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+ user_id, app_id, pushkey = row[1:4]
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+ stop_pusher(user_id, app_id, pushkey)
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+ elif row in pushers_rows:
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+ user_id = row[1]
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+ app_id = row[5]
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+ pushkey = row[8]
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+ yield start_pusher(user_id, app_id, pushkey)
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+
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+ stream = results.get("events")
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+ if stream:
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+ min_stream_id = stream["rows"][0][0]
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+ max_stream_id = stream["position"]
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+ preserve_fn(pusher_pool.on_new_notifications)(
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+ min_stream_id, max_stream_id
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+ )
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+
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+ stream = results.get("receipts")
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+ if stream:
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+ rows = stream["rows"]
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+ affected_room_ids = set(row[1] for row in rows)
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+ min_stream_id = rows[0][0]
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+ max_stream_id = stream["position"]
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+ preserve_fn(pusher_pool.on_new_receipts)(
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+ min_stream_id, max_stream_id, affected_room_ids
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+ )
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+
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+ while True:
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+ try:
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+ args = store.stream_positions()
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+ args["timeout"] = 30000
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+ result = yield http_client.get_json(replication_url, args=args)
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+ yield store.process_replication(result)
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+ poke_pushers(result)
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+ except:
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+ logger.exception("Error replicating from %r", replication_url)
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+ sleep(30)
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+
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+
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+def setup(config_options):
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+ try:
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+ config = PusherSlaveConfig.load_config(
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+ "Synapse pusher", config_options
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+ )
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+ except ConfigError as e:
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+ sys.stderr.write("\n" + e.message + "\n")
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+ sys.exit(1)
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+
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+ config.setup_logging()
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+
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+ database_engine = create_engine(config.database_config)
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+
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+ ps = PusherServer(
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+ config.server_name,
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+ db_config=config.database_config,
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+ config=config,
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+ version_string=get_version_string("Synapse", synapse),
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+ database_engine=database_engine,
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+ )
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+
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+ ps.setup()
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+
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+ def start():
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+ ps.replicate()
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+ ps.get_pusherpool().start()
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+ ps.get_datastore().start_profiling()
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+
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+ reactor.callWhenRunning(start)
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+
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+ return ps
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+
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+
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+if __name__ == '__main__':
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+ with LoggingContext("main"):
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+ ps = setup(sys.argv[1:])
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+ reactor.run()
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