dendrite/syncapi/sync/requestpool.go
Dan f05ce478f0
Implement Push Notifications (#1842)
* Add Pushserver component with Pushers API

Co-authored-by: Tommie Gannert <tommie@gannert.se>
Co-authored-by: Dan Peleg <dan@globekeeper.com>

* Wire Pushserver component

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>

* Add PushGatewayClient.

The full event format is required for Sytest.

* Add a pushrules module.

* Change user API account creation to use the new pushrules module's defaults.

Introduces "scope" as required by client API, and some small field
tweaks to make some 61push Sytests pass.

* Add push rules query/put API in Pushserver.

This manipulates account data over User API, and fires sync messages
for changes. Those sync messages should, according to an existing TODO
in clientapi, be moved to userapi.

Forks clientapi/producers/syncapi.go to pushserver/ for later extension.

* Add clientapi routes for push rules to Pushserver.

A cleanup would be to move more of the name-splitting logic into
pushrules.go, to depollute routing.go.

* Output rooms.join.unread_notifications in /sync.

This is the read-side. Pushserver will be the write-side.

* Implement pushserver/storage for notifications.

* Use PushGatewayClient and the pushrules module in Pushserver's room consumer.

* Use one goroutine per user to avoid locking up the entire server for
  one bad push gateway.
* Split pushing by format.
* Send one device per push. Sytest does not support coalescing
  multiple devices into one push. Matches Synapse. Either we change
  Sytest, or remove the group-by-url-and-format logic.
* Write OutputNotificationData from push server. Sync API is already
  the consumer.

* Implement read receipt consumers in Pushserver.

Supports m.read and m.fully_read receipts.

* Add clientapi route for /unstable/notifications.

* Rename to UpsertPusher for clarity and handle pusher update

* Fix linter errors

* Ignore body.Close() error check

* Fix push server internal http wiring

* Add 40 newly passing 61push tests to whitelist

* Add next 12 newly passing 61push tests to whitelist

* Send notification data before notifying users in EDU server consumer

* NATS JetStream

* Goodbye sarama

* Fix `NewStreamTokenFromString`

* Consume on the correct topic for the roomserver

* Don't panic, NAK instead

* Move push notifications into the User API

* Don't set null values since that apparently causes Element upsetti

* Also set omitempty on conditions

* Fix bug so that we don't override the push rules unnecessarily

* Tweak defaults

* Update defaults

* More tweaks

* Move `/notifications` onto `r0`/`v3` mux

* User API will consume events and read/fully read markers from the sync API with stream positions, instead of consuming directly

Co-authored-by: Piotr Kozimor <p1996k@gmail.com>
Co-authored-by: Tommie Gannert <tommie@gannert.se>
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2022-03-03 11:40:53 +00:00

325 lines
10 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 sync
import (
"net"
"net/http"
"strings"
"sync"
"time"
"github.com/matrix-org/dendrite/clientapi/jsonerror"
keyapi "github.com/matrix-org/dendrite/keyserver/api"
roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/setup/config"
"github.com/matrix-org/dendrite/syncapi/internal"
"github.com/matrix-org/dendrite/syncapi/notifier"
"github.com/matrix-org/dendrite/syncapi/storage"
"github.com/matrix-org/dendrite/syncapi/streams"
"github.com/matrix-org/dendrite/syncapi/types"
userapi "github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/util"
"github.com/prometheus/client_golang/prometheus"
)
// RequestPool manages HTTP long-poll connections for /sync
type RequestPool struct {
db storage.Database
cfg *config.SyncAPI
userAPI userapi.UserInternalAPI
keyAPI keyapi.KeyInternalAPI
rsAPI roomserverAPI.RoomserverInternalAPI
lastseen sync.Map
streams *streams.Streams
Notifier *notifier.Notifier
}
// NewRequestPool makes a new RequestPool
func NewRequestPool(
db storage.Database, cfg *config.SyncAPI,
userAPI userapi.UserInternalAPI, keyAPI keyapi.KeyInternalAPI,
rsAPI roomserverAPI.RoomserverInternalAPI,
streams *streams.Streams, notifier *notifier.Notifier,
) *RequestPool {
rp := &RequestPool{
db: db,
cfg: cfg,
userAPI: userAPI,
keyAPI: keyAPI,
rsAPI: rsAPI,
lastseen: sync.Map{},
streams: streams,
Notifier: notifier,
}
go rp.cleanLastSeen()
return rp
}
func (rp *RequestPool) cleanLastSeen() {
for {
rp.lastseen.Range(func(key interface{}, _ interface{}) bool {
rp.lastseen.Delete(key)
return true
})
time.Sleep(time.Minute)
}
}
func (rp *RequestPool) updateLastSeen(req *http.Request, device *userapi.Device) {
if _, ok := rp.lastseen.LoadOrStore(device.UserID+device.ID, struct{}{}); ok {
return
}
remoteAddr := req.RemoteAddr
if rp.cfg.RealIPHeader != "" {
if header := req.Header.Get(rp.cfg.RealIPHeader); header != "" {
// TODO: Maybe this isn't great but it will satisfy both X-Real-IP
// and X-Forwarded-For (which can be a list where the real client
// address is the first listed address). Make more intelligent?
addresses := strings.Split(header, ",")
if ip := net.ParseIP(addresses[0]); ip != nil {
remoteAddr = addresses[0]
}
}
}
lsreq := &userapi.PerformLastSeenUpdateRequest{
UserID: device.UserID,
DeviceID: device.ID,
RemoteAddr: remoteAddr,
}
lsres := &userapi.PerformLastSeenUpdateResponse{}
go rp.userAPI.PerformLastSeenUpdate(req.Context(), lsreq, lsres) // nolint:errcheck
rp.lastseen.Store(device.UserID+device.ID, time.Now())
}
func init() {
prometheus.MustRegister(
activeSyncRequests, waitingSyncRequests,
)
}
var activeSyncRequests = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "dendrite",
Subsystem: "syncapi",
Name: "active_sync_requests",
Help: "The number of sync requests that are active right now",
},
)
var waitingSyncRequests = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "dendrite",
Subsystem: "syncapi",
Name: "waiting_sync_requests",
Help: "The number of sync requests that are waiting to be woken by a notifier",
},
)
// OnIncomingSyncRequest is called when a client makes a /sync request. This function MUST be
// called in a dedicated goroutine for this request. This function will block the goroutine
// until a response is ready, or it times out.
func (rp *RequestPool) OnIncomingSyncRequest(req *http.Request, device *userapi.Device) util.JSONResponse {
// Extract values from request
syncReq, err := newSyncRequest(req, *device, rp.db)
if err != nil {
if err == types.ErrMalformedSyncToken {
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.InvalidArgumentValue(err.Error()),
}
}
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.Unknown(err.Error()),
}
}
activeSyncRequests.Inc()
defer activeSyncRequests.Dec()
rp.updateLastSeen(req, device)
waitingSyncRequests.Inc()
defer waitingSyncRequests.Dec()
currentPos := rp.Notifier.CurrentPosition()
if !rp.shouldReturnImmediately(syncReq, currentPos) {
timer := time.NewTimer(syncReq.Timeout) // case of timeout=0 is handled above
defer timer.Stop()
userStreamListener := rp.Notifier.GetListener(*syncReq)
defer userStreamListener.Close()
giveup := func() util.JSONResponse {
syncReq.Response.NextBatch = syncReq.Since
return util.JSONResponse{
Code: http.StatusOK,
JSON: syncReq.Response,
}
}
select {
case <-syncReq.Context.Done(): // Caller gave up
return giveup()
case <-timer.C: // Timeout reached
return giveup()
case <-userStreamListener.GetNotifyChannel(syncReq.Since):
syncReq.Log.Debugln("Responding to sync after wake-up")
currentPos.ApplyUpdates(userStreamListener.GetSyncPosition())
}
} else {
syncReq.Log.WithField("currentPos", currentPos).Debugln("Responding to sync immediately")
}
if syncReq.Since.IsEmpty() {
// Complete sync
syncReq.Response.NextBatch = types.StreamingToken{
PDUPosition: rp.streams.PDUStreamProvider.CompleteSync(
syncReq.Context, syncReq,
),
TypingPosition: rp.streams.TypingStreamProvider.CompleteSync(
syncReq.Context, syncReq,
),
ReceiptPosition: rp.streams.ReceiptStreamProvider.CompleteSync(
syncReq.Context, syncReq,
),
InvitePosition: rp.streams.InviteStreamProvider.CompleteSync(
syncReq.Context, syncReq,
),
SendToDevicePosition: rp.streams.SendToDeviceStreamProvider.CompleteSync(
syncReq.Context, syncReq,
),
AccountDataPosition: rp.streams.AccountDataStreamProvider.CompleteSync(
syncReq.Context, syncReq,
),
NotificationDataPosition: rp.streams.NotificationDataStreamProvider.CompleteSync(
syncReq.Context, syncReq,
),
DeviceListPosition: rp.streams.DeviceListStreamProvider.CompleteSync(
syncReq.Context, syncReq,
),
}
} else {
// Incremental sync
syncReq.Response.NextBatch = types.StreamingToken{
PDUPosition: rp.streams.PDUStreamProvider.IncrementalSync(
syncReq.Context, syncReq,
syncReq.Since.PDUPosition, currentPos.PDUPosition,
),
TypingPosition: rp.streams.TypingStreamProvider.IncrementalSync(
syncReq.Context, syncReq,
syncReq.Since.TypingPosition, currentPos.TypingPosition,
),
ReceiptPosition: rp.streams.ReceiptStreamProvider.IncrementalSync(
syncReq.Context, syncReq,
syncReq.Since.ReceiptPosition, currentPos.ReceiptPosition,
),
InvitePosition: rp.streams.InviteStreamProvider.IncrementalSync(
syncReq.Context, syncReq,
syncReq.Since.InvitePosition, currentPos.InvitePosition,
),
SendToDevicePosition: rp.streams.SendToDeviceStreamProvider.IncrementalSync(
syncReq.Context, syncReq,
syncReq.Since.SendToDevicePosition, currentPos.SendToDevicePosition,
),
AccountDataPosition: rp.streams.AccountDataStreamProvider.IncrementalSync(
syncReq.Context, syncReq,
syncReq.Since.AccountDataPosition, currentPos.AccountDataPosition,
),
NotificationDataPosition: rp.streams.NotificationDataStreamProvider.IncrementalSync(
syncReq.Context, syncReq,
syncReq.Since.NotificationDataPosition, currentPos.NotificationDataPosition,
),
DeviceListPosition: rp.streams.DeviceListStreamProvider.IncrementalSync(
syncReq.Context, syncReq,
syncReq.Since.DeviceListPosition, currentPos.DeviceListPosition,
),
}
}
return util.JSONResponse{
Code: http.StatusOK,
JSON: syncReq.Response,
}
}
func (rp *RequestPool) OnIncomingKeyChangeRequest(req *http.Request, device *userapi.Device) util.JSONResponse {
from := req.URL.Query().Get("from")
to := req.URL.Query().Get("to")
if from == "" || to == "" {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.InvalidArgumentValue("missing ?from= or ?to="),
}
}
fromToken, err := types.NewStreamTokenFromString(from)
if err != nil {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.InvalidArgumentValue("bad 'from' value"),
}
}
toToken, err := types.NewStreamTokenFromString(to)
if err != nil {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.InvalidArgumentValue("bad 'to' value"),
}
}
syncReq, err := newSyncRequest(req, *device, rp.db)
if err != nil {
util.GetLogger(req.Context()).WithError(err).Error("newSyncRequest failed")
return jsonerror.InternalServerError()
}
rp.streams.PDUStreamProvider.IncrementalSync(req.Context(), syncReq, fromToken.PDUPosition, toToken.PDUPosition)
_, _, err = internal.DeviceListCatchup(
req.Context(), rp.keyAPI, rp.rsAPI, syncReq.Device.UserID,
syncReq.Response, fromToken.DeviceListPosition, toToken.DeviceListPosition,
)
if err != nil {
util.GetLogger(req.Context()).WithError(err).Error("Failed to DeviceListCatchup info")
return jsonerror.InternalServerError()
}
return util.JSONResponse{
Code: 200,
JSON: struct {
Changed []string `json:"changed"`
Left []string `json:"left"`
}{
Changed: syncReq.Response.DeviceLists.Changed,
Left: syncReq.Response.DeviceLists.Left,
},
}
}
// shouldReturnImmediately returns whether the /sync request is an initial sync,
// or timeout=0, or full_state=true, in any of the cases the request should
// return immediately.
func (rp *RequestPool) shouldReturnImmediately(syncReq *types.SyncRequest, currentPos types.StreamingToken) bool {
if currentPos.IsAfter(syncReq.Since) || syncReq.Timeout == 0 || syncReq.WantFullState {
return true
}
return false
}