258 lines
8.2 KiB
Go
258 lines
8.2 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/matrix-org/dendrite/eduserver/api"
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"github.com/matrix-org/dendrite/federationapi/queue"
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"github.com/matrix-org/dendrite/federationapi/storage"
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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/gomatrixserverlib"
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"github.com/matrix-org/util"
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"github.com/nats-io/nats.go"
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log "github.com/sirupsen/logrus"
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)
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// OutputEDUConsumer consumes events that originate in EDU server.
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type OutputEDUConsumer 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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db storage.Database
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queues *queue.OutgoingQueues
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ServerName gomatrixserverlib.ServerName
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typingTopic string
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sendToDeviceTopic string
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receiptTopic string
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}
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// NewOutputEDUConsumer creates a new OutputEDUConsumer. Call Start() to begin consuming from EDU servers.
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func NewOutputEDUConsumer(
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process *process.ProcessContext,
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cfg *config.FederationAPI,
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js nats.JetStreamContext,
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queues *queue.OutgoingQueues,
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store storage.Database,
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) *OutputEDUConsumer {
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return &OutputEDUConsumer{
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ctx: process.Context(),
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jetstream: js,
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queues: queues,
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db: store,
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ServerName: cfg.Matrix.ServerName,
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durable: cfg.Matrix.JetStream.Durable("FederationAPIEDUServerConsumer"),
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typingTopic: cfg.Matrix.JetStream.Prefixed(jetstream.OutputTypingEvent),
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sendToDeviceTopic: cfg.Matrix.JetStream.Prefixed(jetstream.OutputSendToDeviceEvent),
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receiptTopic: cfg.Matrix.JetStream.Prefixed(jetstream.OutputReceiptEvent),
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}
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}
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// Start consuming from EDU servers
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func (t *OutputEDUConsumer) Start() error {
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if err := jetstream.JetStreamConsumer(
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t.ctx, t.jetstream, t.typingTopic, t.durable, t.onTypingEvent,
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nats.DeliverAll(), nats.ManualAck(),
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); err != nil {
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return err
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}
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if err := jetstream.JetStreamConsumer(
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t.ctx, t.jetstream, t.sendToDeviceTopic, t.durable, t.onSendToDeviceEvent,
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nats.DeliverAll(), nats.ManualAck(),
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); err != nil {
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return err
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}
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if err := jetstream.JetStreamConsumer(
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t.ctx, t.jetstream, t.receiptTopic, t.durable, t.onReceiptEvent,
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nats.DeliverAll(), nats.ManualAck(),
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); err != nil {
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return err
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}
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return nil
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}
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// onSendToDeviceEvent is called in response to a message received on the
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// send-to-device events topic from the EDU server.
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func (t *OutputEDUConsumer) onSendToDeviceEvent(ctx context.Context, msg *nats.Msg) bool {
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// Extract the send-to-device event from msg.
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var ote api.OutputSendToDeviceEvent
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if err := json.Unmarshal(msg.Data, &ote); err != nil {
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log.WithError(err).Errorf("eduserver output log: message parse failed (expected send-to-device)")
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return true
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}
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// only send send-to-device events which originated from us
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_, originServerName, err := gomatrixserverlib.SplitID('@', ote.Sender)
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if err != nil {
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log.WithError(err).WithField("user_id", ote.Sender).Error("Failed to extract domain from send-to-device sender")
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return true
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}
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if originServerName != t.ServerName {
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log.WithField("other_server", originServerName).Info("Suppressing send-to-device: originated elsewhere")
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return true
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}
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_, destServerName, err := gomatrixserverlib.SplitID('@', ote.UserID)
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if err != nil {
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log.WithError(err).WithField("user_id", ote.UserID).Error("Failed to extract domain from send-to-device destination")
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return true
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}
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// Pack the EDU and marshal it
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edu := &gomatrixserverlib.EDU{
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Type: gomatrixserverlib.MDirectToDevice,
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Origin: string(t.ServerName),
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}
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tdm := gomatrixserverlib.ToDeviceMessage{
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Sender: ote.Sender,
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Type: ote.Type,
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MessageID: util.RandomString(32),
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Messages: map[string]map[string]json.RawMessage{
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ote.UserID: {
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ote.DeviceID: ote.Content,
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},
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},
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}
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if edu.Content, err = json.Marshal(tdm); err != nil {
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log.WithError(err).Error("failed to marshal EDU JSON")
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return true
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}
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log.Debugf("Sending send-to-device message into %q destination queue", destServerName)
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if err := t.queues.SendEDU(edu, t.ServerName, []gomatrixserverlib.ServerName{destServerName}); err != nil {
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log.WithError(err).Error("failed to send EDU")
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return false
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}
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return true
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}
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// onTypingEvent is called in response to a message received on the typing
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// events topic from the EDU server.
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func (t *OutputEDUConsumer) onTypingEvent(ctx context.Context, msg *nats.Msg) bool {
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// Extract the typing event from msg.
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var ote api.OutputTypingEvent
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if err := json.Unmarshal(msg.Data, &ote); err != nil {
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// Skip this msg but continue processing messages.
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log.WithError(err).Errorf("eduserver output log: message parse failed (expected typing)")
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_ = msg.Ack()
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return true
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}
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// only send typing events which originated from us
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_, typingServerName, err := gomatrixserverlib.SplitID('@', ote.Event.UserID)
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if err != nil {
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log.WithError(err).WithField("user_id", ote.Event.UserID).Error("Failed to extract domain from typing sender")
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_ = msg.Ack()
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return true
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}
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if typingServerName != t.ServerName {
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return true
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}
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joined, err := t.db.GetJoinedHosts(ctx, ote.Event.RoomID)
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if err != nil {
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log.WithError(err).WithField("room_id", ote.Event.RoomID).Error("failed to get joined hosts for room")
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return false
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}
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names := make([]gomatrixserverlib.ServerName, len(joined))
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for i := range joined {
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names[i] = joined[i].ServerName
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}
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edu := &gomatrixserverlib.EDU{Type: ote.Event.Type}
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if edu.Content, err = json.Marshal(map[string]interface{}{
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"room_id": ote.Event.RoomID,
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"user_id": ote.Event.UserID,
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"typing": ote.Event.Typing,
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}); err != nil {
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log.WithError(err).Error("failed to marshal EDU JSON")
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return true
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}
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if err := t.queues.SendEDU(edu, t.ServerName, names); err != nil {
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log.WithError(err).Error("failed to send EDU")
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return false
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}
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return true
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}
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// onReceiptEvent is called in response to a message received on the receipt
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// events topic from the EDU server.
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func (t *OutputEDUConsumer) onReceiptEvent(ctx context.Context, msg *nats.Msg) bool {
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// Extract the typing event from msg.
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var receipt api.OutputReceiptEvent
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if err := json.Unmarshal(msg.Data, &receipt); err != nil {
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// Skip this msg but continue processing messages.
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log.WithError(err).Errorf("eduserver output log: message parse failed (expected receipt)")
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return true
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}
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// only send receipt events which originated from us
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_, receiptServerName, err := gomatrixserverlib.SplitID('@', receipt.UserID)
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if err != nil {
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log.WithError(err).WithField("user_id", receipt.UserID).Error("failed to extract domain from receipt sender")
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return true
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}
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if receiptServerName != t.ServerName {
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return true
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}
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joined, err := t.db.GetJoinedHosts(ctx, receipt.RoomID)
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if err != nil {
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log.WithError(err).WithField("room_id", receipt.RoomID).Error("failed to get joined hosts for room")
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return false
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}
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names := make([]gomatrixserverlib.ServerName, len(joined))
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for i := range joined {
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names[i] = joined[i].ServerName
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}
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content := map[string]api.FederationReceiptMRead{}
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content[receipt.RoomID] = api.FederationReceiptMRead{
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User: map[string]api.FederationReceiptData{
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receipt.UserID: {
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Data: api.ReceiptTS{
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TS: receipt.Timestamp,
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},
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EventIDs: []string{receipt.EventID},
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},
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},
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}
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edu := &gomatrixserverlib.EDU{
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Type: gomatrixserverlib.MReceipt,
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Origin: string(t.ServerName),
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}
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if edu.Content, err = json.Marshal(content); err != nil {
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log.WithError(err).Error("failed to marshal EDU JSON")
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return true
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}
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if err := t.queues.SendEDU(edu, t.ServerName, names); err != nil {
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log.WithError(err).Error("failed to send EDU")
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return false
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}
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return true
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}
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