mirror of
https://github.com/matrix-org/dendrite
synced 2024-09-07 19:55:39 +02:00
This should transactional snapshot isolation for `/sync` etc requests. For now we don't use repeatable read due to some odd test failures with invites.
155 lines
5.1 KiB
Go
155 lines
5.1 KiB
Go
// Copyright 2020 The Matrix.org Foundation C.I.C.
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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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package consumers
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import (
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"context"
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"encoding/json"
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"github.com/getsentry/sentry-go"
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"github.com/matrix-org/dendrite/keyserver/api"
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roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/dendrite/setup/config"
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"github.com/matrix-org/dendrite/setup/jetstream"
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"github.com/matrix-org/dendrite/setup/process"
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"github.com/matrix-org/dendrite/syncapi/notifier"
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"github.com/matrix-org/dendrite/syncapi/storage"
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"github.com/matrix-org/dendrite/syncapi/streams"
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"github.com/matrix-org/dendrite/syncapi/types"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/nats-io/nats.go"
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"github.com/sirupsen/logrus"
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)
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// OutputKeyChangeEventConsumer consumes events that originated in the key server.
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type OutputKeyChangeEventConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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durable string
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topic string
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db storage.Database
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notifier *notifier.Notifier
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stream streams.StreamProvider
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serverName gomatrixserverlib.ServerName // our server name
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rsAPI roomserverAPI.SyncRoomserverAPI
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}
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// NewOutputKeyChangeEventConsumer creates a new OutputKeyChangeEventConsumer.
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// Call Start() to begin consuming from the key server.
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func NewOutputKeyChangeEventConsumer(
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process *process.ProcessContext,
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cfg *config.SyncAPI,
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topic string,
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js nats.JetStreamContext,
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rsAPI roomserverAPI.SyncRoomserverAPI,
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store storage.Database,
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notifier *notifier.Notifier,
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stream streams.StreamProvider,
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) *OutputKeyChangeEventConsumer {
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s := &OutputKeyChangeEventConsumer{
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ctx: process.Context(),
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jetstream: js,
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durable: cfg.Matrix.JetStream.Durable("SyncAPIKeyChangeConsumer"),
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topic: topic,
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db: store,
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serverName: cfg.Matrix.ServerName,
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rsAPI: rsAPI,
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notifier: notifier,
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stream: stream,
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}
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return s
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}
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// Start consuming from the key server
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func (s *OutputKeyChangeEventConsumer) Start() error {
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return jetstream.JetStreamConsumer(
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s.ctx, s.jetstream, s.topic, s.durable, 1,
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s.onMessage, nats.DeliverAll(), nats.ManualAck(),
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)
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}
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func (s *OutputKeyChangeEventConsumer) onMessage(ctx context.Context, msgs []*nats.Msg) bool {
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msg := msgs[0] // Guaranteed to exist if onMessage is called
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var m api.DeviceMessage
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if err := json.Unmarshal(msg.Data, &m); err != nil {
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logrus.WithError(err).Errorf("failed to read device message from key change topic")
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return true
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}
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if m.DeviceKeys == nil && m.OutputCrossSigningKeyUpdate == nil {
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// This probably shouldn't happen but stops us from panicking if we come
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// across an update that doesn't satisfy either types.
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return true
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}
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switch m.Type {
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case api.TypeCrossSigningUpdate:
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return s.onCrossSigningMessage(m, m.DeviceChangeID)
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case api.TypeDeviceKeyUpdate:
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fallthrough
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default:
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return s.onDeviceKeyMessage(m, m.DeviceChangeID)
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}
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}
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func (s *OutputKeyChangeEventConsumer) onDeviceKeyMessage(m api.DeviceMessage, deviceChangeID int64) bool {
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if m.DeviceKeys == nil {
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return true
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}
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output := m.DeviceKeys
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// work out who we need to notify about the new key
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var queryRes roomserverAPI.QuerySharedUsersResponse
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err := s.rsAPI.QuerySharedUsers(s.ctx, &roomserverAPI.QuerySharedUsersRequest{
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UserID: output.UserID,
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}, &queryRes)
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if err != nil {
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logrus.WithError(err).Error("syncapi: failed to QuerySharedUsers for key change event from key server")
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sentry.CaptureException(err)
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return true
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}
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// make sure we get our own key updates too!
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queryRes.UserIDsToCount[output.UserID] = 1
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posUpdate := types.StreamPosition(deviceChangeID)
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s.stream.Advance(posUpdate)
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for userID := range queryRes.UserIDsToCount {
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s.notifier.OnNewKeyChange(types.StreamingToken{DeviceListPosition: posUpdate}, userID, output.UserID)
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}
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return true
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}
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func (s *OutputKeyChangeEventConsumer) onCrossSigningMessage(m api.DeviceMessage, deviceChangeID int64) bool {
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output := m.CrossSigningKeyUpdate
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// work out who we need to notify about the new key
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var queryRes roomserverAPI.QuerySharedUsersResponse
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err := s.rsAPI.QuerySharedUsers(s.ctx, &roomserverAPI.QuerySharedUsersRequest{
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UserID: output.UserID,
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}, &queryRes)
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if err != nil {
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logrus.WithError(err).Error("syncapi: failed to QuerySharedUsers for key change event from key server")
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sentry.CaptureException(err)
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return true
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}
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// make sure we get our own key updates too!
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queryRes.UserIDsToCount[output.UserID] = 1
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posUpdate := types.StreamPosition(deviceChangeID)
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s.stream.Advance(posUpdate)
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for userID := range queryRes.UserIDsToCount {
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s.notifier.OnNewKeyChange(types.StreamingToken{DeviceListPosition: posUpdate}, userID, output.UserID)
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}
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return true
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}
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