Per-user-per-device sync streams (#1068)
* Per-user-per-device sync streams * Tweaks * Tweaks * Pass full device into CompleteSync * Set user IDs and device IDs properly in tests * Add new test, fix TestNewEventAndWasPreviouslyJoinedToRoom * nolint a function that is not used yet * Add test for waking up single device * Hopefully unstick test * Try to ensure that TestCorrectStreamWakeup doesn't block forever * Update tests
This commit is contained in:
Neil Alexander
GitHub
parent
57841fc35e
commit
02fe38e1f7
@ -13,4 +13,4 @@ go build ./cmd/...
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./scripts/find-lint.sh
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echo "Testing..."
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go test ./...
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go test -v ./...
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@ -58,7 +58,7 @@ type Database interface {
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// ID.
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IncrementalSync(ctx context.Context, device authtypes.Device, fromPos, toPos types.StreamingToken, numRecentEventsPerRoom int, wantFullState bool) (*types.Response, error)
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// CompleteSync returns a complete /sync API response for the given user.
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CompleteSync(ctx context.Context, userID string, numRecentEventsPerRoom int) (*types.Response, error)
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CompleteSync(ctx context.Context, device authtypes.Device, numRecentEventsPerRoom int) (*types.Response, error)
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// GetAccountDataInRange returns all account data for a given user inserted or
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// updated between two given positions
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// Returns a map following the format data[roomID] = []dataTypes
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@ -666,10 +666,10 @@ func (d *Database) getResponseWithPDUsForCompleteSync(
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}
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func (d *Database) CompleteSync(
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ctx context.Context, userID string, numRecentEventsPerRoom int,
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ctx context.Context, device authtypes.Device, numRecentEventsPerRoom int,
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) (*types.Response, error) {
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res, toPos, joinedRoomIDs, err := d.getResponseWithPDUsForCompleteSync(
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ctx, userID, numRecentEventsPerRoom,
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ctx, device.UserID, numRecentEventsPerRoom,
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)
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if err != nil {
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return nil, err
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@ -181,7 +181,7 @@ func TestSyncResponse(t *testing.T) {
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Name: "CompleteSync limited",
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DoSync: func() (*types.Response, error) {
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// limit set to 5
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return db.CompleteSync(ctx, testUserIDA, 5)
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return db.CompleteSync(ctx, testUserDeviceA, 5)
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},
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// want the last 5 events
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WantTimeline: events[len(events)-5:],
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@ -193,7 +193,7 @@ func TestSyncResponse(t *testing.T) {
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{
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Name: "CompleteSync",
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DoSync: func() (*types.Response, error) {
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return db.CompleteSync(ctx, testUserIDA, len(events)+1)
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return db.CompleteSync(ctx, testUserDeviceA, len(events)+1)
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},
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WantTimeline: events,
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// We want no state at all as that field in /sync is the delta between the token (beginning of time)
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@ -37,8 +37,8 @@ type Notifier struct {
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streamLock *sync.Mutex
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// The latest sync position
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currPos types.StreamingToken
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// A map of user_id => UserStream which can be used to wake a given user's /sync request.
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userStreams map[string]*UserStream
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// A map of user_id => device_id => UserStream which can be used to wake a given user's /sync request.
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userDeviceStreams map[string]map[string]*UserDeviceStream
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// The last time we cleaned out stale entries from the userStreams map
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lastCleanUpTime time.Time
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}
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@ -50,7 +50,7 @@ func NewNotifier(pos types.StreamingToken) *Notifier {
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return &Notifier{
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currPos: pos,
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roomIDToJoinedUsers: make(map[string]userIDSet),
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userStreams: make(map[string]*UserStream),
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userDeviceStreams: make(map[string]map[string]*UserDeviceStream),
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streamLock: &sync.Mutex{},
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lastCleanUpTime: time.Now(),
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}
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@ -123,7 +123,7 @@ func (n *Notifier) OnNewEvent(
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// GetListener returns a UserStreamListener that can be used to wait for
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// updates for a user. Must be closed.
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// notify for anything before sincePos
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func (n *Notifier) GetListener(req syncRequest) UserStreamListener {
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func (n *Notifier) GetListener(req syncRequest) UserDeviceStreamListener {
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// Do what synapse does: https://github.com/matrix-org/synapse/blob/v0.20.0/synapse/notifier.py#L298
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// - Bucket request into a lookup map keyed off a list of joined room IDs and separately a user ID
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// - Incoming events wake requests for a matching room ID
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@ -137,7 +137,7 @@ func (n *Notifier) GetListener(req syncRequest) UserStreamListener {
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n.removeEmptyUserStreams()
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return n.fetchUserStream(req.device.UserID, true).GetListener(req.ctx)
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return n.fetchUserDeviceStream(req.device.UserID, req.device.ID, true).GetListener(req.ctx)
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}
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// Load the membership states required to notify users correctly.
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@ -173,27 +173,69 @@ func (n *Notifier) setUsersJoinedToRooms(roomIDToUserIDs map[string][]string) {
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}
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}
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// wakeupUsers will wake up the sync strems for all of the devices for all of the
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// specified user IDs.
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func (n *Notifier) wakeupUsers(userIDs []string, newPos types.StreamingToken) {
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for _, userID := range userIDs {
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stream := n.fetchUserStream(userID, false)
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if stream != nil {
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for _, stream := range n.fetchUserStreams(userID) {
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if stream == nil {
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continue
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}
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stream.Broadcast(newPos) // wake up all goroutines Wait()ing on this stream
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}
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}
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}
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// fetchUserStream retrieves a stream unique to the given user. If makeIfNotExists is true,
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// wakeupUserDevice will wake up the sync stream for a specific user device. Other
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// device streams will be left alone.
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// nolint:unused
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func (n *Notifier) wakeupUserDevice(userDevices map[string]string, newPos types.StreamingToken) {
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for userID, deviceID := range userDevices {
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if stream := n.fetchUserDeviceStream(userID, deviceID, false); stream != nil {
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stream.Broadcast(newPos) // wake up all goroutines Wait()ing on this stream
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}
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}
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}
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// fetchUserDeviceStream retrieves a stream unique to the given device. If makeIfNotExists is true,
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// a stream will be made for this device if one doesn't exist and it will be returned. This
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// function does not wait for data to be available on the stream.
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// NB: Callers should have locked the mutex before calling this function.
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func (n *Notifier) fetchUserDeviceStream(userID, deviceID string, makeIfNotExists bool) *UserDeviceStream {
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_, ok := n.userDeviceStreams[userID]
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if !ok {
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if !makeIfNotExists {
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return nil
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}
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n.userDeviceStreams[userID] = map[string]*UserDeviceStream{}
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}
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stream, ok := n.userDeviceStreams[userID][deviceID]
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if !ok {
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if !makeIfNotExists {
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return nil
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}
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// TODO: Unbounded growth of streams (1 per user)
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if stream = NewUserDeviceStream(userID, deviceID, n.currPos); stream != nil {
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n.userDeviceStreams[userID][deviceID] = stream
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}
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}
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return stream
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}
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// fetchUserStreams retrieves all streams for the given user. If makeIfNotExists is true,
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// a stream will be made for this user if one doesn't exist and it will be returned. This
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// function does not wait for data to be available on the stream.
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// NB: Callers should have locked the mutex before calling this function.
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func (n *Notifier) fetchUserStream(userID string, makeIfNotExists bool) *UserStream {
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stream, ok := n.userStreams[userID]
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if !ok && makeIfNotExists {
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// TODO: Unbounded growth of streams (1 per user)
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stream = NewUserStream(userID, n.currPos)
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n.userStreams[userID] = stream
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func (n *Notifier) fetchUserStreams(userID string) []*UserDeviceStream {
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user, ok := n.userDeviceStreams[userID]
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if !ok {
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return []*UserDeviceStream{}
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}
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return stream
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streams := []*UserDeviceStream{}
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for _, stream := range user {
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streams = append(streams, stream)
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}
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return streams
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}
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// Not thread-safe: must be called on the OnNewEvent goroutine only
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@ -236,9 +278,14 @@ func (n *Notifier) removeEmptyUserStreams() {
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n.lastCleanUpTime = now
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deleteBefore := now.Add(-5 * time.Minute)
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for key, value := range n.userStreams {
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if value.TimeOfLastNonEmpty().Before(deleteBefore) {
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delete(n.userStreams, key)
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for user, byUser := range n.userDeviceStreams {
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for device, stream := range byUser {
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if stream.TimeOfLastNonEmpty().Before(deleteBefore) {
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delete(n.userDeviceStreams[user], device)
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}
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if len(n.userDeviceStreams[user]) == 0 {
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delete(n.userDeviceStreams, user)
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}
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}
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}
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}
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@ -41,9 +41,11 @@ var (
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)
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var (
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roomID = "!test:localhost"
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alice = "@alice:localhost"
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bob = "@bob:localhost"
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roomID = "!test:localhost"
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alice = "@alice:localhost"
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aliceDev = "alicedevice"
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bob = "@bob:localhost"
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bobDev = "bobdev"
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)
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func init() {
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@ -107,7 +109,7 @@ func mustEqualPositions(t *testing.T, got, want types.StreamingToken) {
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// Test that the current position is returned if a request is already behind.
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func TestImmediateNotification(t *testing.T) {
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n := NewNotifier(syncPositionBefore)
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pos, err := waitForEvents(n, newTestSyncRequest(alice, syncPositionVeryOld))
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pos, err := waitForEvents(n, newTestSyncRequest(alice, aliceDev, syncPositionVeryOld))
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if err != nil {
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t.Fatalf("TestImmediateNotification error: %s", err)
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}
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@ -124,7 +126,7 @@ func TestNewEventAndJoinedToRoom(t *testing.T) {
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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pos, err := waitForEvents(n, newTestSyncRequest(bob, syncPositionBefore))
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pos, err := waitForEvents(n, newTestSyncRequest(bob, bobDev, syncPositionBefore))
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if err != nil {
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t.Errorf("TestNewEventAndJoinedToRoom error: %w", err)
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}
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@ -132,7 +134,7 @@ func TestNewEventAndJoinedToRoom(t *testing.T) {
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wg.Done()
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}()
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stream := lockedFetchUserStream(n, bob)
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stream := lockedFetchUserStream(n, bob, bobDev)
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waitForBlocking(stream, 1)
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n.OnNewEvent(&randomMessageEvent, "", nil, syncPositionAfter)
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@ -140,6 +142,43 @@ func TestNewEventAndJoinedToRoom(t *testing.T) {
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wg.Wait()
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}
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func TestCorrectStream(t *testing.T) {
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n := NewNotifier(syncPositionBefore)
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stream := lockedFetchUserStream(n, bob, bobDev)
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if stream.UserID != bob {
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t.Fatalf("expected user %q, got %q", bob, stream.UserID)
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}
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if stream.DeviceID != bobDev {
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t.Fatalf("expected device %q, got %q", bobDev, stream.DeviceID)
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}
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}
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func TestCorrectStreamWakeup(t *testing.T) {
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n := NewNotifier(syncPositionBefore)
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awoken := make(chan string)
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streamone := lockedFetchUserStream(n, alice, "one")
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streamtwo := lockedFetchUserStream(n, alice, "two")
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go func() {
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select {
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case <-streamone.signalChannel:
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awoken <- "one"
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case <-streamtwo.signalChannel:
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awoken <- "two"
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}
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}()
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time.Sleep(1 * time.Second)
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wake := "two"
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n.wakeupUserDevice(map[string]string{alice: wake}, syncPositionAfter)
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if result := <-awoken; result != wake {
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t.Fatalf("expected to wake %q, got %q", wake, result)
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}
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}
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// Test that an invite unblocks the request
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func TestNewInviteEventForUser(t *testing.T) {
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n := NewNotifier(syncPositionBefore)
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@ -150,7 +189,7 @@ func TestNewInviteEventForUser(t *testing.T) {
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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pos, err := waitForEvents(n, newTestSyncRequest(bob, syncPositionBefore))
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pos, err := waitForEvents(n, newTestSyncRequest(bob, bobDev, syncPositionBefore))
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if err != nil {
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t.Errorf("TestNewInviteEventForUser error: %w", err)
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}
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@ -158,7 +197,7 @@ func TestNewInviteEventForUser(t *testing.T) {
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wg.Done()
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}()
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stream := lockedFetchUserStream(n, bob)
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stream := lockedFetchUserStream(n, bob, bobDev)
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waitForBlocking(stream, 1)
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n.OnNewEvent(&aliceInviteBobEvent, "", nil, syncPositionAfter)
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@ -176,7 +215,7 @@ func TestEDUWakeup(t *testing.T) {
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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pos, err := waitForEvents(n, newTestSyncRequest(bob, syncPositionAfter))
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pos, err := waitForEvents(n, newTestSyncRequest(bob, bobDev, syncPositionAfter))
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if err != nil {
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t.Errorf("TestNewInviteEventForUser error: %w", err)
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}
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@ -184,7 +223,7 @@ func TestEDUWakeup(t *testing.T) {
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wg.Done()
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}()
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stream := lockedFetchUserStream(n, bob)
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stream := lockedFetchUserStream(n, bob, bobDev)
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waitForBlocking(stream, 1)
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n.OnNewEvent(&aliceInviteBobEvent, "", nil, syncPositionNewEDU)
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@ -202,7 +241,7 @@ func TestMultipleRequestWakeup(t *testing.T) {
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var wg sync.WaitGroup
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wg.Add(3)
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poll := func() {
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pos, err := waitForEvents(n, newTestSyncRequest(bob, syncPositionBefore))
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pos, err := waitForEvents(n, newTestSyncRequest(bob, bobDev, syncPositionBefore))
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if err != nil {
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t.Errorf("TestMultipleRequestWakeup error: %w", err)
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}
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@ -213,7 +252,7 @@ func TestMultipleRequestWakeup(t *testing.T) {
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go poll()
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go poll()
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stream := lockedFetchUserStream(n, bob)
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stream := lockedFetchUserStream(n, bob, bobDev)
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waitForBlocking(stream, 3)
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n.OnNewEvent(&randomMessageEvent, "", nil, syncPositionAfter)
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@ -240,24 +279,24 @@ func TestNewEventAndWasPreviouslyJoinedToRoom(t *testing.T) {
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// Make bob leave the room
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leaveWG.Add(1)
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go func() {
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pos, err := waitForEvents(n, newTestSyncRequest(bob, syncPositionBefore))
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pos, err := waitForEvents(n, newTestSyncRequest(bob, bobDev, syncPositionBefore))
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if err != nil {
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t.Errorf("TestNewEventAndWasPreviouslyJoinedToRoom error: %w", err)
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}
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mustEqualPositions(t, pos, syncPositionAfter)
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leaveWG.Done()
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}()
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bobStream := lockedFetchUserStream(n, bob)
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bobStream := lockedFetchUserStream(n, bob, bobDev)
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waitForBlocking(bobStream, 1)
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n.OnNewEvent(&bobLeaveEvent, "", nil, syncPositionAfter)
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leaveWG.Wait()
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// send an event into the room. Make sure alice gets it. Bob should not.
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var aliceWG sync.WaitGroup
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aliceStream := lockedFetchUserStream(n, alice)
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aliceStream := lockedFetchUserStream(n, alice, aliceDev)
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aliceWG.Add(1)
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go func() {
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pos, err := waitForEvents(n, newTestSyncRequest(alice, syncPositionAfter))
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pos, err := waitForEvents(n, newTestSyncRequest(alice, aliceDev, syncPositionAfter))
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if err != nil {
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t.Errorf("TestNewEventAndWasPreviouslyJoinedToRoom error: %w", err)
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}
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@ -267,7 +306,7 @@ func TestNewEventAndWasPreviouslyJoinedToRoom(t *testing.T) {
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go func() {
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// this should timeout with an error (but the main goroutine won't wait for the timeout explicitly)
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_, err := waitForEvents(n, newTestSyncRequest(bob, syncPositionAfter))
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_, err := waitForEvents(n, newTestSyncRequest(bob, bobDev, syncPositionAfter))
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if err == nil {
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t.Errorf("TestNewEventAndWasPreviouslyJoinedToRoom expect error but got nil")
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}
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@ -300,7 +339,7 @@ func waitForEvents(n *Notifier, req syncRequest) (types.StreamingToken, error) {
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}
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// Wait until something is Wait()ing on the user stream.
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func waitForBlocking(s *UserStream, numBlocking uint) {
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func waitForBlocking(s *UserDeviceStream, numBlocking uint) {
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for numBlocking != s.NumWaiting() {
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// This is horrible but I don't want to add a signalling mechanism JUST for testing.
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time.Sleep(1 * time.Microsecond)
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@ -309,16 +348,19 @@ func waitForBlocking(s *UserStream, numBlocking uint) {
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// lockedFetchUserStream invokes Notifier.fetchUserStream, respecting Notifier.streamLock.
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// A new stream is made if it doesn't exist already.
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func lockedFetchUserStream(n *Notifier, userID string) *UserStream {
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func lockedFetchUserStream(n *Notifier, userID, deviceID string) *UserDeviceStream {
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n.streamLock.Lock()
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defer n.streamLock.Unlock()
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return n.fetchUserStream(userID, true)
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return n.fetchUserDeviceStream(userID, deviceID, true)
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}
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func newTestSyncRequest(userID string, since types.StreamingToken) syncRequest {
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func newTestSyncRequest(userID, deviceID string, since types.StreamingToken) syncRequest {
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return syncRequest{
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device: authtypes.Device{UserID: userID},
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device: authtypes.Device{
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UserID: userID,
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ID: deviceID,
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},
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timeout: 1 * time.Minute,
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since: &since,
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wantFullState: false,
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@ -47,7 +47,6 @@ func (rp *RequestPool) OnIncomingSyncRequest(req *http.Request, device *authtype
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var syncData *types.Response
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// Extract values from request
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userID := device.UserID
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syncReq, err := newSyncRequest(req, *device)
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if err != nil {
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return util.JSONResponse{
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@ -56,10 +55,11 @@ func (rp *RequestPool) OnIncomingSyncRequest(req *http.Request, device *authtype
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}
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}
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logger := util.GetLogger(req.Context()).WithFields(log.Fields{
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"userID": userID,
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"since": syncReq.since,
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"timeout": syncReq.timeout,
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"limit": syncReq.limit,
|
||||
"userID": device.UserID,
|
||||
"deviceID": device.ID,
|
||||
"since": syncReq.since,
|
||||
"timeout": syncReq.timeout,
|
||||
"limit": syncReq.limit,
|
||||
})
|
||||
|
||||
currPos := rp.notifier.CurrentPosition()
|
||||
@ -136,7 +136,7 @@ func (rp *RequestPool) OnIncomingSyncRequest(req *http.Request, device *authtype
|
||||
func (rp *RequestPool) currentSyncForUser(req syncRequest, latestPos types.StreamingToken) (res *types.Response, err error) {
|
||||
// TODO: handle ignored users
|
||||
if req.since == nil {
|
||||
res, err = rp.db.CompleteSync(req.ctx, req.device.UserID, req.limit)
|
||||
res, err = rp.db.CompleteSync(req.ctx, req.device, req.limit)
|
||||
} else {
|
||||
res, err = rp.db.IncrementalSync(req.ctx, req.device, *req.since, latestPos, req.limit, req.wantFullState)
|
||||
}
|
||||
|
||||
@ -23,12 +23,13 @@ import (
|
||||
"github.com/matrix-org/dendrite/syncapi/types"
|
||||
)
|
||||
|
||||
// UserStream represents a communication mechanism between the /sync request goroutine
|
||||
// UserDeviceStream represents a communication mechanism between the /sync request goroutine
|
||||
// and the underlying sync server goroutines.
|
||||
// Goroutines can get a UserStreamListener to wait for updates, and can Broadcast()
|
||||
// updates.
|
||||
type UserStream struct {
|
||||
UserID string
|
||||
type UserDeviceStream struct {
|
||||
UserID string
|
||||
DeviceID string
|
||||
// The lock that protects changes to this struct
|
||||
lock sync.Mutex
|
||||
// Closed when there is an update.
|
||||
@ -41,18 +42,19 @@ type UserStream struct {
|
||||
numWaiting uint
|
||||
}
|
||||
|
||||
// UserStreamListener allows a sync request to wait for updates for a user.
|
||||
type UserStreamListener struct {
|
||||
userStream *UserStream
|
||||
// UserDeviceStreamListener allows a sync request to wait for updates for a user.
|
||||
type UserDeviceStreamListener struct {
|
||||
userStream *UserDeviceStream
|
||||
|
||||
// Whether the stream has been closed
|
||||
hasClosed bool
|
||||
}
|
||||
|
||||
// NewUserStream creates a new user stream
|
||||
func NewUserStream(userID string, currPos types.StreamingToken) *UserStream {
|
||||
return &UserStream{
|
||||
// NewUserDeviceStream creates a new user stream
|
||||
func NewUserDeviceStream(userID, deviceID string, currPos types.StreamingToken) *UserDeviceStream {
|
||||
return &UserDeviceStream{
|
||||
UserID: userID,
|
||||
DeviceID: deviceID,
|
||||
timeOfLastChannel: time.Now(),
|
||||
pos: currPos,
|
||||
signalChannel: make(chan struct{}),
|
||||
@ -62,18 +64,18 @@ func NewUserStream(userID string, currPos types.StreamingToken) *UserStream {
|
||||
// GetListener returns UserStreamListener that a sync request can use to wait
|
||||
// for new updates with.
|
||||
// UserStreamListener must be closed
|
||||
func (s *UserStream) GetListener(ctx context.Context) UserStreamListener {
|
||||
func (s *UserDeviceStream) GetListener(ctx context.Context) UserDeviceStreamListener {
|
||||
s.lock.Lock()
|
||||
defer s.lock.Unlock()
|
||||
|
||||
s.numWaiting++ // We decrement when UserStreamListener is closed
|
||||
|
||||
listener := UserStreamListener{
|
||||
listener := UserDeviceStreamListener{
|
||||
userStream: s,
|
||||
}
|
||||
|
||||
// Lets be a bit paranoid here and check that Close() is being called
|
||||
runtime.SetFinalizer(&listener, func(l *UserStreamListener) {
|
||||
runtime.SetFinalizer(&listener, func(l *UserDeviceStreamListener) {
|
||||
if !l.hasClosed {
|
||||
l.Close()
|
||||
}
|
||||
@ -83,7 +85,7 @@ func (s *UserStream) GetListener(ctx context.Context) UserStreamListener {
|
||||
}
|
||||
|
||||
// Broadcast a new sync position for this user.
|
||||
func (s *UserStream) Broadcast(pos types.StreamingToken) {
|
||||
func (s *UserDeviceStream) Broadcast(pos types.StreamingToken) {
|
||||
s.lock.Lock()
|
||||
defer s.lock.Unlock()
|
||||
|
||||
@ -96,7 +98,7 @@ func (s *UserStream) Broadcast(pos types.StreamingToken) {
|
||||
|
||||
// NumWaiting returns the number of goroutines waiting for waiting for updates.
|
||||
// Used for metrics and testing.
|
||||
func (s *UserStream) NumWaiting() uint {
|
||||
func (s *UserDeviceStream) NumWaiting() uint {
|
||||
s.lock.Lock()
|
||||
defer s.lock.Unlock()
|
||||
return s.numWaiting
|
||||
@ -105,7 +107,7 @@ func (s *UserStream) NumWaiting() uint {
|
||||
// TimeOfLastNonEmpty returns the last time that the number of waiting listeners
|
||||
// was non-empty, may be time.Now() if number of waiting listeners is currently
|
||||
// non-empty.
|
||||
func (s *UserStream) TimeOfLastNonEmpty() time.Time {
|
||||
func (s *UserDeviceStream) TimeOfLastNonEmpty() time.Time {
|
||||
s.lock.Lock()
|
||||
defer s.lock.Unlock()
|
||||
|
||||
@ -118,7 +120,7 @@ func (s *UserStream) TimeOfLastNonEmpty() time.Time {
|
||||
|
||||
// GetSyncPosition returns last sync position which the UserStream was
|
||||
// notified about
|
||||
func (s *UserStreamListener) GetSyncPosition() types.StreamingToken {
|
||||
func (s *UserDeviceStreamListener) GetSyncPosition() types.StreamingToken {
|
||||
s.userStream.lock.Lock()
|
||||
defer s.userStream.lock.Unlock()
|
||||
|
||||
@ -130,7 +132,7 @@ func (s *UserStreamListener) GetSyncPosition() types.StreamingToken {
|
||||
// sincePos specifies from which point we want to be notified about. If there
|
||||
// has already been an update after sincePos we'll return a closed channel
|
||||
// immediately.
|
||||
func (s *UserStreamListener) GetNotifyChannel(sincePos types.StreamingToken) <-chan struct{} {
|
||||
func (s *UserDeviceStreamListener) GetNotifyChannel(sincePos types.StreamingToken) <-chan struct{} {
|
||||
s.userStream.lock.Lock()
|
||||
defer s.userStream.lock.Unlock()
|
||||
|
||||
@ -147,7 +149,7 @@ func (s *UserStreamListener) GetNotifyChannel(sincePos types.StreamingToken) <-c
|
||||
}
|
||||
|
||||
// Close cleans up resources used
|
||||
func (s *UserStreamListener) Close() {
|
||||
func (s *UserDeviceStreamListener) Close() {
|
||||
s.userStream.lock.Lock()
|
||||
defer s.userStream.lock.Unlock()
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user