1 files changed, 32 insertions, 0 deletions
diff --git a/src/librbd/migration/StreamInterface.h b/src/librbd/migration/StreamInterface.h
new file mode 100644
index 000000000..782a9a5f8
--- /dev/null
+++ b/src/librbd/migration/StreamInterface.h
@@ -0,0 +1,32 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_MIGRATION_STREAM_INTERFACE_H
+#define CEPH_LIBRBD_MIGRATION_STREAM_INTERFACE_H
+
+#include "include/buffer_fwd.h"
+#include "include/int_types.h"
+#include "librbd/io/Types.h"
+
+struct Context;
+
+namespace librbd {
+namespace migration {
+
+struct StreamInterface {
+  virtual ~StreamInterface() {
+  }
+
+  virtual void open(Context* on_finish) = 0;
+  virtual void close(Context* on_finish) = 0;
+
+  virtual void get_size(uint64_t* size, Context* on_finish) = 0;
+
+  virtual void read(io::Extents&& byte_extents, bufferlist* data,
+                    Context* on_finish) = 0;
+};
+
+} // namespace migration
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_MIGRATION_STREAM_INTERFACE_H