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Merge pull request #676 from matrix-org/markjh/replicate_stateIII
Add replication streams for ex outliers and current state resets
This commit is contained in:
commit
62e395f0e3
@ -204,17 +204,28 @@ class ReplicationResource(Resource):
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request_events = current_token.events
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if request_backfill is None:
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request_backfill = current_token.backfill
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events_rows, backfill_rows = yield self.store.get_all_new_events(
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res = yield self.store.get_all_new_events(
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request_backfill, request_events,
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current_token.backfill, current_token.events,
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limit
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)
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writer.write_header_and_rows("events", events_rows, (
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writer.write_header_and_rows("events", res.new_forward_events, (
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"position", "internal", "json", "state_group"
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))
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writer.write_header_and_rows("backfill", backfill_rows, (
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writer.write_header_and_rows("backfill", res.new_backfill_events, (
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"position", "internal", "json", "state_group"
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))
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writer.write_header_and_rows(
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"forward_ex_outliers", res.forward_ex_outliers,
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("position", "event_id", "state_group")
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)
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writer.write_header_and_rows(
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"backward_ex_outliers", res.backward_ex_outliers,
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("position", "event_id", "state_group")
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)
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writer.write_header_and_rows(
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"state_resets", res.state_resets, ("position",)
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)
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@defer.inlineCallbacks
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def presence(self, writer, current_token):
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@ -25,7 +25,7 @@ from synapse.api.constants import EventTypes
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from canonicaljson import encode_canonical_json
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from contextlib import contextmanager
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from collections import namedtuple
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import logging
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import math
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@ -205,6 +205,15 @@ class EventsStore(SQLBaseStore):
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txn.call_after(self.get_joined_hosts_for_room.invalidate, (event.room_id,))
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txn.call_after(self.get_room_name_and_aliases, event.room_id)
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# Add an entry to the current_state_resets table to record the point
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# where we clobbered the current state
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stream_order = event.internal_metadata.stream_ordering
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self._simple_insert_txn(
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txn,
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table="current_state_resets",
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values={"event_stream_ordering": stream_order}
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)
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self._simple_delete_txn(
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txn,
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table="current_state_events",
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@ -314,6 +323,18 @@ class EventsStore(SQLBaseStore):
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(metadata_json, event.event_id,)
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)
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stream_order = event.internal_metadata.stream_ordering
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state_group_id = context.state_group or context.new_state_group_id
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self._simple_insert_txn(
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txn,
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table="ex_outlier_stream",
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values={
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"event_stream_ordering": stream_order,
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"event_id": event.event_id,
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"state_group": state_group_id,
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}
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)
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sql = (
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"UPDATE events SET outlier = ?"
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" WHERE event_id = ?"
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@ -1110,8 +1131,34 @@ class EventsStore(SQLBaseStore):
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if last_forward_id != current_forward_id:
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txn.execute(sql, (last_forward_id, current_forward_id, limit))
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new_forward_events = txn.fetchall()
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if len(new_forward_events) == limit:
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upper_bound = new_forward_events[-1][0]
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else:
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upper_bound = current_forward_id
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sql = (
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"SELECT -event_stream_ordering FROM current_state_resets"
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" WHERE ? < event_stream_ordering"
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" AND event_stream_ordering <= ?"
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" ORDER BY event_stream_ordering ASC"
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)
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txn.execute(sql, (last_forward_id, upper_bound))
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state_resets = txn.fetchall()
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sql = (
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"SELECT -event_stream_ordering, event_id, state_group"
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" FROM ex_outlier_stream"
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" WHERE ? > event_stream_ordering"
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" AND event_stream_ordering >= ?"
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" ORDER BY event_stream_ordering DESC"
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)
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txn.execute(sql, (last_forward_id, upper_bound))
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forward_ex_outliers = txn.fetchall()
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else:
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new_forward_events = []
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state_resets = []
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forward_ex_outliers = []
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sql = (
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"SELECT -e.stream_ordering, ej.internal_metadata, ej.json,"
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@ -1128,8 +1175,35 @@ class EventsStore(SQLBaseStore):
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if last_backfill_id != current_backfill_id:
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txn.execute(sql, (-last_backfill_id, -current_backfill_id, limit))
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new_backfill_events = txn.fetchall()
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if len(new_backfill_events) == limit:
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upper_bound = new_backfill_events[-1][0]
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else:
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upper_bound = current_backfill_id
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sql = (
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"SELECT -event_stream_ordering, event_id, state_group"
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" FROM ex_outlier_stream"
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" WHERE ? > event_stream_ordering"
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" AND event_stream_ordering >= ?"
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" ORDER BY event_stream_ordering DESC"
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)
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txn.execute(sql, (-last_backfill_id, -upper_bound))
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backward_ex_outliers = txn.fetchall()
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else:
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new_backfill_events = []
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backward_ex_outliers = []
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return (new_forward_events, new_backfill_events)
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return AllNewEventsResult(
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new_forward_events, new_backfill_events,
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forward_ex_outliers, backward_ex_outliers,
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state_resets,
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)
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return self.runInteraction("get_all_new_events", get_all_new_events_txn)
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AllNewEventsResult = namedtuple("AllNewEventsResult", [
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"new_forward_events", "new_backfill_events",
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"forward_ex_outliers", "backward_ex_outliers",
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"state_resets"
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])
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38
synapse/storage/schema/delta/30/state_stream.sql
Normal file
38
synapse/storage/schema/delta/30/state_stream.sql
Normal file
@ -0,0 +1,38 @@
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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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/**
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* The positions in the event stream_ordering when the current_state was
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* replaced by the state at the event.
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*/
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CREATE TABLE IF NOT EXISTS current_state_resets(
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event_stream_ordering BIGINT PRIMARY KEY NOT NULL
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);
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/* The outlier events that have aquired a state group typically through
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* backfill. This is tracked separately to the events table, as assigning a
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* state group change the position of the existing event in the stream
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* ordering.
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* However since a stream_ordering is assigned in persist_event for the
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* (event, state) pair, we can use that stream_ordering to identify when
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* the new state was assigned for the event.
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*/
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CREATE TABLE IF NOT EXISTS ex_outlier_stream(
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event_stream_ordering BIGINT PRIMARY KEY NOT NULL,
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event_id TEXT NOT NULL,
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state_group BIGINT NOT NULL
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);
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