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// Copyright 2022 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 producers
import (
"context"
"encoding/json"
"fmt"
"strconv"
"time"
"github.com/matrix-org/dendrite/setup/jetstream"
"github.com/matrix-org/dendrite/syncapi/types"
userapi "github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/nats-io/nats.go"
log "github.com/sirupsen/logrus"
)
// SyncAPIProducer produces events for the sync API server to consume
type SyncAPIProducer struct {
TopicReceiptEvent string
TopicSendToDeviceEvent string
TopicTypingEvent string
TopicPresenceEvent string
TopicDeviceListUpdate string
JetStream nats.JetStreamContext
ServerName gomatrixserverlib.ServerName
UserAPI userapi.UserInternalAPI
}
func (p *SyncAPIProducer) SendReceipt(
ctx context.Context,
userID, roomID, eventID, receiptType string, timestamp gomatrixserverlib.Timestamp,
) error {
m := &nats.Msg{
Subject: p.TopicReceiptEvent,
Header: nats.Header{},
}
m.Header.Set(jetstream.UserID, userID)
m.Header.Set(jetstream.RoomID, roomID)
m.Header.Set(jetstream.EventID, eventID)
m.Header.Set("type", receiptType)
m.Header.Set("timestamp", strconv.Itoa(int(timestamp)))
log.WithFields(log.Fields{}).Tracef("Producing to topic '%s'", p.TopicReceiptEvent)
_, err := p.JetStream.PublishMsg(m, nats.Context(ctx))
return err
}
func (p *SyncAPIProducer) SendToDevice(
ctx context.Context, sender, userID, deviceID, eventType string,
message interface{},
) error {
devices := []string{}
_, domain, err := gomatrixserverlib.SplitID('@', userID)
if err != nil {
return err
}
// If the event is targeted locally then we want to expand the wildcard
// out into individual device IDs so that we can send them to each respective
// device. If the event isn't targeted locally then we can't expand the
// wildcard as we don't know about the remote devices, so instead we leave it
// as-is, so that the federation sender can send it on with the wildcard intact.
if domain == p.ServerName && deviceID == "*" {
var res userapi.QueryDevicesResponse
err = p.UserAPI.QueryDevices(context.TODO(), &userapi.QueryDevicesRequest{
UserID: userID,
}, &res)
if err != nil {
return err
}
for _, dev := range res.Devices {
devices = append(devices, dev.ID)
}
} else {
devices = append(devices, deviceID)
}
js, err := json.Marshal(message)
if err != nil {
return err
}
log.WithFields(log.Fields{
"user_id": userID,
"num_devices": len(devices),
"type": eventType,
}).Tracef("Producing to topic '%s'", p.TopicSendToDeviceEvent)
for _, device := range devices {
ote := &types.OutputSendToDeviceEvent{
UserID: userID,
DeviceID: device,
SendToDeviceEvent: gomatrixserverlib.SendToDeviceEvent{
Sender: sender,
Type: eventType,
Content: js,
},
}
eventJSON, err := json.Marshal(ote)
if err != nil {
log.WithError(err).Error("sendToDevice failed json.Marshal")
return err
}
m := &nats.Msg{
Subject: p.TopicSendToDeviceEvent,
Data: eventJSON,
Header: nats.Header{},
}
m.Header.Set("sender", sender)
m.Header.Set(jetstream.UserID, userID)
if _, err = p.JetStream.PublishMsg(m, nats.Context(ctx)); err != nil {
log.WithError(err).Error("sendToDevice failed t.Producer.SendMessage")
return err
}
}
return nil
}
func (p *SyncAPIProducer) SendTyping(
ctx context.Context, userID, roomID string, typing bool, timeoutMS int64,
) error {
m := &nats.Msg{
Subject: p.TopicTypingEvent,
Header: nats.Header{},
}
m.Header.Set(jetstream.UserID, userID)
m.Header.Set(jetstream.RoomID, roomID)
m.Header.Set("typing", strconv.FormatBool(typing))
m.Header.Set("timeout_ms", strconv.Itoa(int(timeoutMS)))
_, err := p.JetStream.PublishMsg(m, nats.Context(ctx))
return err
}
func (p *SyncAPIProducer) SendPresence(
ctx context.Context, userID string, presence types.Presence, statusMsg *string, lastActiveAgo int64,
) error {
m := nats.NewMsg(p.TopicPresenceEvent)
m.Header.Set(jetstream.UserID, userID)
m.Header.Set("presence", presence.String())
if statusMsg != nil {
m.Header.Set("status_msg", *statusMsg)
}
lastActiveTS := gomatrixserverlib.AsTimestamp(time.Now().Add(-(time.Duration(lastActiveAgo) * time.Millisecond)))
m.Header.Set("last_active_ts", strconv.Itoa(int(lastActiveTS)))
log.Debugf("Sending presence to syncAPI: %+v", m.Header)
_, err := p.JetStream.PublishMsg(m, nats.Context(ctx))
return err
}
func (p *SyncAPIProducer) SendDeviceListUpdate(
ctx context.Context, deviceListUpdate *gomatrixserverlib.DeviceListUpdateEvent,
) (err error) {
m := nats.NewMsg(p.TopicDeviceListUpdate)
m.Header.Set(jetstream.UserID, deviceListUpdate.UserID)
m.Data, err = json.Marshal(deviceListUpdate)
if err != nil {
return fmt.Errorf("json.Marshal: %w", err)
}
log.Debugf("Sending device list update: %+v", m.Header)
_, err = p.JetStream.PublishMsg(m, nats.Context(ctx))
return err
}
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