dendrite/syncapi/streams/stream_sendtodevice.go

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package streams
import (
"context"
"github.com/matrix-org/dendrite/syncapi/types"
)
type SendToDeviceStreamProvider struct {
StreamProvider
}
func (p *SendToDeviceStreamProvider) CompleteSync(
ctx context.Context,
req *types.SyncRequest,
) types.StreamPosition {
return p.IncrementalSync(ctx, req, 0, p.LatestPosition(ctx))
}
func (p *SendToDeviceStreamProvider) IncrementalSync(
ctx context.Context,
req *types.SyncRequest,
from, to types.StreamPosition,
) types.StreamPosition {
// See if we have any new tasks to do for the send-to-device messaging.
lastPos, events, updates, deletions, err := p.DB.SendToDeviceUpdatesForSync(req.Context, req.Device.UserID, req.Device.ID, req.Since)
if err != nil {
req.Log.WithError(err).Error("p.DB.SendToDeviceUpdatesForSync failed")
return from
}
// Before we return the sync response, make sure that we take action on
// any send-to-device database updates or deletions that we need to do.
// Then add the updates into the sync response.
if len(updates) > 0 || len(deletions) > 0 {
// Handle the updates and deletions in the database.
err = p.DB.CleanSendToDeviceUpdates(context.Background(), updates, deletions, req.Since)
if err != nil {
req.Log.WithError(err).Error("p.DB.CleanSendToDeviceUpdates failed")
return from
}
}
if len(events) > 0 {
// Add the updates into the sync response.
for _, event := range events {
req.Response.ToDevice.Events = append(req.Response.ToDevice.Events, event.SendToDeviceEvent)
}
}
return lastPos
}