Merge pull request #697 from matrix-org/markjh/slaveI

Add a slaved events store class
This commit is contained in:
Mark Haines 2016-04-06 16:19:25 +01:00
commit e815763b7f
10 changed files with 485 additions and 2 deletions

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# -*- 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.

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# -*- 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.

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# -*- 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.
from synapse.storage._base import SQLBaseStore
from twisted.internet import defer
class BaseSlavedStore(SQLBaseStore):
def __init__(self, db_conn, hs):
super(BaseSlavedStore, self).__init__(hs)
def stream_positions(self):
return {}
def process_replication(self, result):
return defer.succeed(None)

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# -*- 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.
from synapse.storage.util.id_generators import _load_current_id
class SlavedIdTracker(object):
def __init__(self, db_conn, table, column, extra_tables=[], step=1):
self.step = step
self._current = _load_current_id(db_conn, table, column, step)
for table, column in extra_tables:
self.advance(_load_current_id(db_conn, table, column))
def advance(self, new_id):
self._current = (max if self.step > 0 else min)(self._current, new_id)
def get_current_token(self):
return self._current

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# -*- 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.
from ._base import BaseSlavedStore
from ._slaved_id_tracker import SlavedIdTracker
from synapse.api.constants import EventTypes
from synapse.events import FrozenEvent
from synapse.storage import DataStore
from synapse.storage.room import RoomStore
from synapse.storage.roommember import RoomMemberStore
from synapse.storage.event_federation import EventFederationStore
from synapse.storage.state import StateStore
from synapse.util.caches.stream_change_cache import StreamChangeCache
import ujson as json
# So, um, we want to borrow a load of functions intended for reading from
# a DataStore, but we don't want to take functions that either write to the
# DataStore or are cached and don't have cache invalidation logic.
#
# Rather than write duplicate versions of those functions, or lift them to
# a common base class, we going to grab the underlying __func__ object from
# the method descriptor on the DataStore and chuck them into our class.
class SlavedEventStore(BaseSlavedStore):
def __init__(self, db_conn, hs):
super(SlavedEventStore, self).__init__(db_conn, hs)
self._stream_id_gen = SlavedIdTracker(
db_conn, "events", "stream_ordering",
)
self._backfill_id_gen = SlavedIdTracker(
db_conn, "events", "stream_ordering", step=-1
)
events_max = self._stream_id_gen.get_current_token()
event_cache_prefill, min_event_val = self._get_cache_dict(
db_conn, "events",
entity_column="room_id",
stream_column="stream_ordering",
max_value=events_max,
)
self._events_stream_cache = StreamChangeCache(
"EventsRoomStreamChangeCache", min_event_val,
prefilled_cache=event_cache_prefill,
)
# Cached functions can't be accessed through a class instance so we need
# to reach inside the __dict__ to extract them.
get_room_name_and_aliases = RoomStore.__dict__["get_room_name_and_aliases"]
get_rooms_for_user = RoomMemberStore.__dict__["get_rooms_for_user"]
get_users_in_room = RoomMemberStore.__dict__["get_users_in_room"]
get_latest_event_ids_in_room = EventFederationStore.__dict__[
"get_latest_event_ids_in_room"
]
_get_current_state_for_key = StateStore.__dict__[
"_get_current_state_for_key"
]
get_current_state = DataStore.get_current_state.__func__
get_current_state_for_key = DataStore.get_current_state_for_key.__func__
_get_rooms_for_user_where_membership_is_txn = (
DataStore._get_rooms_for_user_where_membership_is_txn.__func__
)
get_rooms_for_user_where_membership_is = (
DataStore.get_rooms_for_user_where_membership_is.__func__
)
get_membership_changes_for_user = (
DataStore.get_membership_changes_for_user.__func__
)
get_room_events_max_id = DataStore.get_room_events_max_id.__func__
get_room_events_stream_for_room = (
DataStore.get_room_events_stream_for_room.__func__
)
_set_before_and_after = DataStore._set_before_and_after
_get_events = DataStore._get_events.__func__
_get_events_from_cache = DataStore._get_events_from_cache.__func__
_invalidate_get_event_cache = DataStore._invalidate_get_event_cache.__func__
_parse_events_txn = DataStore._parse_events_txn.__func__
_get_events_txn = DataStore._get_events_txn.__func__
_fetch_events_txn = DataStore._fetch_events_txn.__func__
_fetch_event_rows = DataStore._fetch_event_rows.__func__
_get_event_from_row_txn = DataStore._get_event_from_row_txn.__func__
def stream_positions(self):
result = super(SlavedEventStore, self).stream_positions()
result["events"] = self._stream_id_gen.get_current_token()
result["backfilled"] = self._backfill_id_gen.get_current_token()
return result
def process_replication(self, result):
state_resets = set(
r[0] for r in result.get("state_resets", {"rows": []})["rows"]
)
stream = result.get("events")
if stream:
self._stream_id_gen.advance(stream["position"])
for row in stream["rows"]:
self._process_replication_row(
row, backfilled=False, state_resets=state_resets
)
stream = result.get("backfill")
if stream:
self._backfill_id_gen.advance(stream["position"])
for row in stream["rows"]:
self._process_replication_row(
row, backfilled=True, state_resets=state_resets
)
stream = result.get("forward_ex_outliers")
if stream:
for row in stream["rows"]:
event_id = row[1]
self._invalidate_get_event_cache(event_id)
stream = result.get("backward_ex_outliers")
if stream:
for row in stream["rows"]:
event_id = row[1]
self._invalidate_get_event_cache(event_id)
return super(SlavedEventStore, self).process_replication(result)
def _process_replication_row(self, row, backfilled, state_resets):
position = row[0]
internal = json.loads(row[1])
event_json = json.loads(row[2])
event = FrozenEvent(event_json, internal_metadata_dict=internal)
self._invalidate_caches_for_event(
event, backfilled, reset_state=position in state_resets
)
def _invalidate_caches_for_event(self, event, backfilled, reset_state):
if reset_state:
self._get_current_state_for_key.invalidate_all()
self.get_rooms_for_user.invalidate_all()
self.get_users_in_room.invalidate((event.room_id,))
# self.get_joined_hosts_for_room.invalidate((event.room_id,))
self.get_room_name_and_aliases.invalidate((event.room_id,))
self._invalidate_get_event_cache(event.event_id)
if not backfilled:
self._events_stream_cache.entity_has_changed(
event.room_id, event.internal_metadata.stream_ordering
)
# self.get_unread_event_push_actions_by_room_for_user.invalidate_many(
# (event.room_id,)
# )
if event.type == EventTypes.Redaction:
self._invalidate_get_event_cache(event.redacts)
if event.type == EventTypes.Member:
self.get_rooms_for_user.invalidate((event.state_key,))
# self.get_joined_hosts_for_room.invalidate((event.room_id,))
self.get_users_in_room.invalidate((event.room_id,))
# self._membership_stream_cache.entity_has_changed(
# event.state_key, event.internal_metadata.stream_ordering
# )
if not event.is_state():
return
if backfilled:
return
if (not event.internal_metadata.is_invite_from_remote()
and event.internal_metadata.is_outlier()):
return
self._get_current_state_for_key.invalidate((
event.room_id, event.type, event.state_key
))
if event.type in [EventTypes.Name, EventTypes.Aliases]:
self.get_room_name_and_aliases.invalidate(
(event.room_id,)
)
pass

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@ -1134,7 +1134,7 @@ class EventsStore(SQLBaseStore):
upper_bound = current_forward_id
sql = (
"SELECT -event_stream_ordering FROM current_state_resets"
"SELECT event_stream_ordering FROM current_state_resets"
" WHERE ? < event_stream_ordering"
" AND event_stream_ordering <= ?"
" ORDER BY event_stream_ordering ASC"
@ -1143,7 +1143,7 @@ class EventsStore(SQLBaseStore):
state_resets = txn.fetchall()
sql = (
"SELECT -event_stream_ordering, event_id, state_group"
"SELECT event_stream_ordering, event_id, state_group"
" FROM ex_outlier_stream"
" WHERE ? > event_stream_ordering"
" AND event_stream_ordering >= ?"

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# -*- 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.

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# -*- 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.

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# 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.
from twisted.internet import defer
from tests import unittest
from synapse.replication.slave.storage.events import SlavedEventStore
from mock import Mock, NonCallableMock
from tests.utils import setup_test_homeserver
from synapse.replication.resource import ReplicationResource
class BaseSlavedStoreTestCase(unittest.TestCase):
@defer.inlineCallbacks
def setUp(self):
self.hs = yield setup_test_homeserver(
"blue",
http_client=None,
replication_layer=Mock(),
ratelimiter=NonCallableMock(spec_set=[
"send_message",
]),
)
self.hs.get_ratelimiter().send_message.return_value = (True, 0)
self.replication = ReplicationResource(self.hs)
self.master_store = self.hs.get_datastore()
self.slaved_store = SlavedEventStore(self.hs.get_db_conn(), self.hs)
self.event_id = 0
@defer.inlineCallbacks
def replicate(self):
streams = self.slaved_store.stream_positions()
result = yield self.replication.replicate(streams, 100)
yield self.slaved_store.process_replication(result)
@defer.inlineCallbacks
def check(self, method, args, expected_result=None):
master_result = yield getattr(self.master_store, method)(*args)
slaved_result = yield getattr(self.slaved_store, method)(*args)
self.assertEqual(master_result, slaved_result)
if expected_result is not None:
self.assertEqual(master_result, expected_result)
self.assertEqual(slaved_result, expected_result)

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# 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.
from ._base import BaseSlavedStoreTestCase
from synapse.types import UserID
from synapse.events import FrozenEvent
from synapse.events.snapshot import EventContext
from twisted.internet import defer
USER_ID = "@feeling:blue"
USER = UserID.from_string(USER_ID)
OUTLIER = {"outlier": True}
ROOM_ID = "!room:blue"
class SlavedEventStoreTestCase(BaseSlavedStoreTestCase):
@defer.inlineCallbacks
def test_room_name_and_aliases(self):
create = yield self.persist(type="m.room.create", key="", creator=USER_ID)
yield self.persist(type="m.room.member", key=USER_ID, membership="join")
yield self.persist(type="m.room.name", key="", name="name1")
yield self.persist(
type="m.room.aliases", key="blue", aliases=["#1:blue"]
)
yield self.replicate()
yield self.check(
"get_room_name_and_aliases", (ROOM_ID,), ("name1", ["#1:blue"])
)
# Set the room name.
yield self.persist(type="m.room.name", key="", name="name2")
yield self.replicate()
yield self.check(
"get_room_name_and_aliases", (ROOM_ID,), ("name2", ["#1:blue"])
)
# Set the room aliases.
yield self.persist(
type="m.room.aliases", key="blue", aliases=["#2:blue"]
)
yield self.replicate()
yield self.check(
"get_room_name_and_aliases", (ROOM_ID,), ("name2", ["#2:blue"])
)
# Leave and join the room clobbering the state.
yield self.persist(type="m.room.member", key=USER_ID, membership="leave")
yield self.persist(
type="m.room.member", key=USER_ID, membership="join",
reset_state=[create]
)
yield self.replicate()
yield self.check(
"get_room_name_and_aliases", (ROOM_ID,), (None, [])
)
event_id = 0
@defer.inlineCallbacks
def persist(
self, sender=USER_ID, room_id=ROOM_ID, type={}, key=None,
internal={},
state=None, reset_state=False, backfill=False,
depth=None, prev_events=[], auth_events=[], prev_state=[],
**content
):
if depth is None:
depth = self.event_id
event_dict = {
"sender": sender,
"type": type,
"content": content,
"event_id": "$%d:blue" % (self.event_id,),
"room_id": room_id,
"depth": depth,
"origin_server_ts": self.event_id,
"prev_events": prev_events,
"auth_events": auth_events,
}
if key is not None:
event_dict["state_key"] = key
event_dict["prev_state"] = prev_state
event = FrozenEvent(event_dict, internal_metadata_dict=internal)
self.event_id += 1
context = EventContext(current_state=state)
if backfill:
yield self.master_store.persist_events(
[(event, context)], backfilled=True
)
else:
yield self.master_store.persist_event(
event, context, current_state=reset_state
)
defer.returnValue(event)