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dendrite/syncapi/streams/streamprovider.go

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package streams
import (
"context"
"github.com/matrix-org/dendrite/syncapi/storage"
"github.com/matrix-org/dendrite/syncapi/types"
)
type StreamProvider interface {
Setup(ctx context.Context, snapshot storage.DatabaseTransaction)
// Advance will update the latest position of the stream based on
// an update and will wake callers waiting on StreamNotifyAfter.
Advance(latest types.StreamPosition)
// CompleteSync will update the response to include all updates as needed
// for a complete sync. It will always return immediately.
CompleteSync(ctx context.Context, snapshot storage.DatabaseTransaction, req *types.SyncRequest) types.StreamPosition
// IncrementalSync will update the response to include all updates between
// the from and to sync positions. It will always return immediately,
// making no changes if the range contains no updates.
IncrementalSync(ctx context.Context, snapshot storage.DatabaseTransaction, req *types.SyncRequest, from, to types.StreamPosition) types.StreamPosition
// LatestPosition returns the latest stream position for this stream.
LatestPosition(ctx context.Context) types.StreamPosition
}