dendrite/federationapi/consumers/eduserver.go
Neil Alexander c773b038bb
Use pull consumers (#2140)
* Pull consumers

* Pull consumers

* Only nuke consumers if they are push consumers

* Clean up old consumers

* Better error handling

* Update comments
2022-02-02 13:32:48 +00:00

258 lines
8.2 KiB
Go

// Copyright 2020 The Matrix.org Foundation C.I.C.
//
// 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.
package consumers
import (
"context"
"encoding/json"
"github.com/matrix-org/dendrite/eduserver/api"
"github.com/matrix-org/dendrite/federationapi/queue"
"github.com/matrix-org/dendrite/federationapi/storage"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/dendrite/setup/jetstream"
"github.com/matrix-org/dendrite/setup/process"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
"github.com/nats-io/nats.go"
log "github.com/sirupsen/logrus"
)
// OutputEDUConsumer consumes events that originate in EDU server.
type OutputEDUConsumer struct {
ctx context.Context
jetstream nats.JetStreamContext
durable string
db storage.Database
queues *queue.OutgoingQueues
ServerName gomatrixserverlib.ServerName
typingTopic string
sendToDeviceTopic string
receiptTopic string
}
// NewOutputEDUConsumer creates a new OutputEDUConsumer. Call Start() to begin consuming from EDU servers.
func NewOutputEDUConsumer(
process *process.ProcessContext,
cfg *config.FederationAPI,
js nats.JetStreamContext,
queues *queue.OutgoingQueues,
store storage.Database,
) *OutputEDUConsumer {
return &OutputEDUConsumer{
ctx: process.Context(),
jetstream: js,
queues: queues,
db: store,
ServerName: cfg.Matrix.ServerName,
durable: cfg.Matrix.JetStream.Durable("FederationAPIEDUServerConsumer"),
typingTopic: cfg.Matrix.JetStream.TopicFor(jetstream.OutputTypingEvent),
sendToDeviceTopic: cfg.Matrix.JetStream.TopicFor(jetstream.OutputSendToDeviceEvent),
receiptTopic: cfg.Matrix.JetStream.TopicFor(jetstream.OutputReceiptEvent),
}
}
// Start consuming from EDU servers
func (t *OutputEDUConsumer) Start() error {
if err := jetstream.JetStreamConsumer(
t.ctx, t.jetstream, t.typingTopic, t.durable, t.onTypingEvent,
nats.DeliverAll(), nats.ManualAck(),
); err != nil {
return err
}
if err := jetstream.JetStreamConsumer(
t.ctx, t.jetstream, t.sendToDeviceTopic, t.durable, t.onSendToDeviceEvent,
nats.DeliverAll(), nats.ManualAck(),
); err != nil {
return err
}
if err := jetstream.JetStreamConsumer(
t.ctx, t.jetstream, t.receiptTopic, t.durable, t.onReceiptEvent,
nats.DeliverAll(), nats.ManualAck(),
); err != nil {
return err
}
return nil
}
// onSendToDeviceEvent is called in response to a message received on the
// send-to-device events topic from the EDU server.
func (t *OutputEDUConsumer) onSendToDeviceEvent(ctx context.Context, msg *nats.Msg) bool {
// Extract the send-to-device event from msg.
var ote api.OutputSendToDeviceEvent
if err := json.Unmarshal(msg.Data, &ote); err != nil {
log.WithError(err).Errorf("eduserver output log: message parse failed (expected send-to-device)")
return true
}
// only send send-to-device events which originated from us
_, originServerName, err := gomatrixserverlib.SplitID('@', ote.Sender)
if err != nil {
log.WithError(err).WithField("user_id", ote.Sender).Error("Failed to extract domain from send-to-device sender")
return true
}
if originServerName != t.ServerName {
log.WithField("other_server", originServerName).Info("Suppressing send-to-device: originated elsewhere")
return true
}
_, destServerName, err := gomatrixserverlib.SplitID('@', ote.UserID)
if err != nil {
log.WithError(err).WithField("user_id", ote.UserID).Error("Failed to extract domain from send-to-device destination")
return true
}
// Pack the EDU and marshal it
edu := &gomatrixserverlib.EDU{
Type: gomatrixserverlib.MDirectToDevice,
Origin: string(t.ServerName),
}
tdm := gomatrixserverlib.ToDeviceMessage{
Sender: ote.Sender,
Type: ote.Type,
MessageID: util.RandomString(32),
Messages: map[string]map[string]json.RawMessage{
ote.UserID: {
ote.DeviceID: ote.Content,
},
},
}
if edu.Content, err = json.Marshal(tdm); err != nil {
log.WithError(err).Error("failed to marshal EDU JSON")
return true
}
log.Infof("Sending send-to-device message into %q destination queue", destServerName)
if err := t.queues.SendEDU(edu, t.ServerName, []gomatrixserverlib.ServerName{destServerName}); err != nil {
log.WithError(err).Error("failed to send EDU")
return false
}
return true
}
// onTypingEvent is called in response to a message received on the typing
// events topic from the EDU server.
func (t *OutputEDUConsumer) onTypingEvent(ctx context.Context, msg *nats.Msg) bool {
// Extract the typing event from msg.
var ote api.OutputTypingEvent
if err := json.Unmarshal(msg.Data, &ote); err != nil {
// Skip this msg but continue processing messages.
log.WithError(err).Errorf("eduserver output log: message parse failed (expected typing)")
_ = msg.Ack()
return true
}
// only send typing events which originated from us
_, typingServerName, err := gomatrixserverlib.SplitID('@', ote.Event.UserID)
if err != nil {
log.WithError(err).WithField("user_id", ote.Event.UserID).Error("Failed to extract domain from typing sender")
_ = msg.Ack()
return true
}
if typingServerName != t.ServerName {
return true
}
joined, err := t.db.GetJoinedHosts(ctx, ote.Event.RoomID)
if err != nil {
log.WithError(err).WithField("room_id", ote.Event.RoomID).Error("failed to get joined hosts for room")
return false
}
names := make([]gomatrixserverlib.ServerName, len(joined))
for i := range joined {
names[i] = joined[i].ServerName
}
edu := &gomatrixserverlib.EDU{Type: ote.Event.Type}
if edu.Content, err = json.Marshal(map[string]interface{}{
"room_id": ote.Event.RoomID,
"user_id": ote.Event.UserID,
"typing": ote.Event.Typing,
}); err != nil {
log.WithError(err).Error("failed to marshal EDU JSON")
return true
}
if err := t.queues.SendEDU(edu, t.ServerName, names); err != nil {
log.WithError(err).Error("failed to send EDU")
return false
}
return true
}
// onReceiptEvent is called in response to a message received on the receipt
// events topic from the EDU server.
func (t *OutputEDUConsumer) onReceiptEvent(ctx context.Context, msg *nats.Msg) bool {
// Extract the typing event from msg.
var receipt api.OutputReceiptEvent
if err := json.Unmarshal(msg.Data, &receipt); err != nil {
// Skip this msg but continue processing messages.
log.WithError(err).Errorf("eduserver output log: message parse failed (expected receipt)")
return true
}
// only send receipt events which originated from us
_, receiptServerName, err := gomatrixserverlib.SplitID('@', receipt.UserID)
if err != nil {
log.WithError(err).WithField("user_id", receipt.UserID).Error("failed to extract domain from receipt sender")
return true
}
if receiptServerName != t.ServerName {
return true
}
joined, err := t.db.GetJoinedHosts(ctx, receipt.RoomID)
if err != nil {
log.WithError(err).WithField("room_id", receipt.RoomID).Error("failed to get joined hosts for room")
return false
}
names := make([]gomatrixserverlib.ServerName, len(joined))
for i := range joined {
names[i] = joined[i].ServerName
}
content := map[string]api.FederationReceiptMRead{}
content[receipt.RoomID] = api.FederationReceiptMRead{
User: map[string]api.FederationReceiptData{
receipt.UserID: {
Data: api.ReceiptTS{
TS: receipt.Timestamp,
},
EventIDs: []string{receipt.EventID},
},
},
}
edu := &gomatrixserverlib.EDU{
Type: gomatrixserverlib.MReceipt,
Origin: string(t.ServerName),
}
if edu.Content, err = json.Marshal(content); err != nil {
log.WithError(err).Error("failed to marshal EDU JSON")
return true
}
if err := t.queues.SendEDU(edu, t.ServerName, names); err != nil {
log.WithError(err).Error("failed to send EDU")
return false
}
return true
}