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// 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/getsentry/sentry-go"
"github.com/matrix-org/dendrite/eduserver/api"
"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/dendrite/syncapi/notifier"
"github.com/matrix-org/dendrite/syncapi/storage"
"github.com/matrix-org/dendrite/syncapi/types"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
"github.com/nats-io/nats.go"
log "github.com/sirupsen/logrus"
)
// OutputSendToDeviceEventConsumer consumes events that originated in the EDU server.
type OutputSendToDeviceEventConsumer struct {
ctx context.Context
jetstream nats.JetStreamContext
topic string
db storage.Database
serverName gomatrixserverlib.ServerName // our server name
stream types.StreamProvider
notifier *notifier.Notifier
}
// NewOutputSendToDeviceEventConsumer creates a new OutputSendToDeviceEventConsumer.
// Call Start() to begin consuming from the EDU server.
func NewOutputSendToDeviceEventConsumer(
process *process.ProcessContext,
cfg *config.SyncAPI,
js nats.JetStreamContext,
store storage.Database,
notifier *notifier.Notifier,
stream types.StreamProvider,
) *OutputSendToDeviceEventConsumer {
return &OutputSendToDeviceEventConsumer{
ctx: process.Context(),
jetstream: js,
topic: cfg.Matrix.JetStream.TopicFor(jetstream.OutputSendToDeviceEvent),
db: store,
serverName: cfg.Matrix.ServerName,
notifier: notifier,
stream: stream,
}
}
// Start consuming from EDU api
func (s *OutputSendToDeviceEventConsumer) Start() error {
_, err := s.jetstream.Subscribe(s.topic, s.onMessage)
return err
}
func (s *OutputSendToDeviceEventConsumer) onMessage(msg *nats.Msg) {
jetstream.WithJetStreamMessage(msg, func(msg *nats.Msg) bool {
var output api.OutputSendToDeviceEvent
if err := json.Unmarshal(msg.Data, &output); err != nil {
// If the message was invalid, log it and move on to the next message in the stream
log.WithError(err).Errorf("EDU server output log: message parse failure")
sentry.CaptureException(err)
return true
}
_, domain, err := gomatrixserverlib.SplitID('@', output.UserID)
if err != nil {
sentry.CaptureException(err)
return true
}
if domain != s.serverName {
return true
}
util.GetLogger(context.TODO()).WithFields(log.Fields{
"sender": output.Sender,
"user_id": output.UserID,
"device_id": output.DeviceID,
"event_type": output.Type,
}).Info("sync API received send-to-device event from EDU server")
streamPos, err := s.db.StoreNewSendForDeviceMessage(
s.ctx, output.UserID, output.DeviceID, output.SendToDeviceEvent,
)
if err != nil {
sentry.CaptureException(err)
log.WithError(err).Errorf("failed to store send-to-device message")
return false
}
s.stream.Advance(streamPos)
s.notifier.OnNewSendToDevice(
output.UserID,
[]string{output.DeviceID},
types.StreamingToken{SendToDevicePosition: streamPos},
)
return true
})
}
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