dendrite/eduserver/input/input.go
Kegsay e15a8042a1
BREAKING: Make eduserver/appservice use userapi (#1138)
* BREAKING: Make eduserver/appservice use userapi

This is a breaking change because this PR restructures how the AS API
tracks its position in Kafka streams. Previously, it used the account DB
to store partition offsets. However, this is also being used by `clientapi`
for the same purpose, which is bad (each component needs to store offsets
independently or else you might lose messages across restarts). This PR
changes this behaviour to now store partition offsets in the `appservice`
database.

This means that:
 - Upon restart, the `appservice` component will attempt to replay all
   room events from the beginning of time.
 - An additional table will be created in the appservice database, which
   in and of itself is backwards compatible.

* Return ErrorConflict
2020-06-16 17:39:56 +01:00

176 lines
5 KiB
Go

// Copyright 2017 Vector Creations Ltd
// Copyright 2017-2018 New Vector Ltd
// Copyright 2019-2020 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 input
import (
"context"
"encoding/json"
"time"
"github.com/Shopify/sarama"
"github.com/matrix-org/dendrite/eduserver/api"
"github.com/matrix-org/dendrite/eduserver/cache"
userapi "github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/sirupsen/logrus"
)
// EDUServerInputAPI implements api.EDUServerInputAPI
type EDUServerInputAPI struct {
// Cache to store the current typing members in each room.
Cache *cache.EDUCache
// The kafka topic to output new typing events to.
OutputTypingEventTopic string
// The kafka topic to output new send to device events to.
OutputSendToDeviceEventTopic string
// kafka producer
Producer sarama.SyncProducer
// Internal user query API
UserAPI userapi.UserInternalAPI
// our server name
ServerName gomatrixserverlib.ServerName
}
// InputTypingEvent implements api.EDUServerInputAPI
func (t *EDUServerInputAPI) InputTypingEvent(
ctx context.Context,
request *api.InputTypingEventRequest,
response *api.InputTypingEventResponse,
) error {
ite := &request.InputTypingEvent
if ite.Typing {
// user is typing, update our current state of users typing.
expireTime := ite.OriginServerTS.Time().Add(
time.Duration(ite.TimeoutMS) * time.Millisecond,
)
t.Cache.AddTypingUser(ite.UserID, ite.RoomID, &expireTime)
} else {
t.Cache.RemoveUser(ite.UserID, ite.RoomID)
}
return t.sendTypingEvent(ite)
}
// InputTypingEvent implements api.EDUServerInputAPI
func (t *EDUServerInputAPI) InputSendToDeviceEvent(
ctx context.Context,
request *api.InputSendToDeviceEventRequest,
response *api.InputSendToDeviceEventResponse,
) error {
ise := &request.InputSendToDeviceEvent
return t.sendToDeviceEvent(ise)
}
func (t *EDUServerInputAPI) sendTypingEvent(ite *api.InputTypingEvent) error {
ev := &api.TypingEvent{
Type: gomatrixserverlib.MTyping,
RoomID: ite.RoomID,
UserID: ite.UserID,
Typing: ite.Typing,
}
ote := &api.OutputTypingEvent{
Event: *ev,
}
if ev.Typing {
expireTime := ite.OriginServerTS.Time().Add(
time.Duration(ite.TimeoutMS) * time.Millisecond,
)
ote.ExpireTime = &expireTime
}
eventJSON, err := json.Marshal(ote)
if err != nil {
return err
}
logrus.WithFields(logrus.Fields{
"room_id": ite.RoomID,
"user_id": ite.UserID,
"typing": ite.Typing,
}).Infof("Producing to topic '%s'", t.OutputTypingEventTopic)
m := &sarama.ProducerMessage{
Topic: string(t.OutputTypingEventTopic),
Key: sarama.StringEncoder(ite.RoomID),
Value: sarama.ByteEncoder(eventJSON),
}
_, _, err = t.Producer.SendMessage(m)
return err
}
func (t *EDUServerInputAPI) sendToDeviceEvent(ise *api.InputSendToDeviceEvent) error {
devices := []string{}
_, domain, err := gomatrixserverlib.SplitID('@', ise.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 == t.ServerName && ise.DeviceID == "*" {
var res userapi.QueryDevicesResponse
err = t.UserAPI.QueryDevices(context.TODO(), &userapi.QueryDevicesRequest{
UserID: ise.UserID,
}, &res)
if err != nil {
return err
}
for _, dev := range res.Devices {
devices = append(devices, dev.ID)
}
} else {
devices = append(devices, ise.DeviceID)
}
logrus.WithFields(logrus.Fields{
"user_id": ise.UserID,
"num_devices": len(devices),
"type": ise.Type,
}).Infof("Producing to topic '%s'", t.OutputSendToDeviceEventTopic)
for _, device := range devices {
ote := &api.OutputSendToDeviceEvent{
UserID: ise.UserID,
DeviceID: device,
SendToDeviceEvent: ise.SendToDeviceEvent,
}
eventJSON, err := json.Marshal(ote)
if err != nil {
logrus.WithError(err).Error("sendToDevice failed json.Marshal")
return err
}
m := &sarama.ProducerMessage{
Topic: string(t.OutputSendToDeviceEventTopic),
Key: sarama.StringEncoder(ote.UserID),
Value: sarama.ByteEncoder(eventJSON),
}
_, _, err = t.Producer.SendMessage(m)
if err != nil {
logrus.WithError(err).Error("sendToDevice failed t.Producer.SendMessage")
return err
}
}
return nil
}