1 files changed, 54 insertions, 0 deletions
diff --git a/src/librbd/migration/SourceSpecBuilder.h b/src/librbd/migration/SourceSpecBuilder.h
new file mode 100644
index 000000000..191cb1cbd
--- /dev/null
+++ b/src/librbd/migration/SourceSpecBuilder.h
@@ -0,0 +1,54 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_MIGRATION_SOURCE_SPEC_BUILDER_H
+#define CEPH_LIBRBD_MIGRATION_SOURCE_SPEC_BUILDER_H
+
+#include "include/int_types.h"
+#include <json_spirit/json_spirit.h>
+#include <memory>
+#include <optional>
+#include <string>
+
+struct Context;
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace migration {
+
+struct FormatInterface;
+struct SnapshotInterface;
+struct StreamInterface;
+
+template <typename ImageCtxT>
+class SourceSpecBuilder {
+public:
+  SourceSpecBuilder(ImageCtxT* image_ctx) : m_image_ctx(image_ctx) {
+  }
+
+  int parse_source_spec(const std::string& source_spec,
+                        json_spirit::mObject* source_spec_object) const;
+
+  int build_format(const json_spirit::mObject& format_object, bool import_only,
+                   std::unique_ptr<FormatInterface>* format) const;
+
+  int build_snapshot(const json_spirit::mObject& source_spec_object,
+                     uint64_t index,
+                     std::shared_ptr<SnapshotInterface>* snapshot) const;
+
+  int build_stream(const json_spirit::mObject& source_spec_object,
+                   std::shared_ptr<StreamInterface>* stream) const;
+
+private:
+  ImageCtxT* m_image_ctx;
+
+};
+
+} // namespace migration
+} // namespace librbd
+
+extern template class librbd::migration::SourceSpecBuilder<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_MIGRATION_SOURCE_SPEC_BUILDER_H