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-rw-r--r--src/librbd/operation/FlattenRequest.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/librbd/operation/FlattenRequest.h b/src/librbd/operation/FlattenRequest.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+#ifndef CEPH_LIBRBD_OPERATION_FLATTEN_REQUEST_H
+#define CEPH_LIBRBD_OPERATION_FLATTEN_REQUEST_H
+
+#include "librbd/operation/Request.h"
+#include "common/snap_types.h"
+
+namespace librbd {
+
+class ImageCtx;
+class ProgressContext;
+
+namespace operation {
+
+template <typename ImageCtxT = ImageCtx>
+class FlattenRequest : public Request<ImageCtxT>
+{
+public:
+ FlattenRequest(ImageCtxT &image_ctx, Context *on_finish,
+ uint64_t overlap_objects, const ::SnapContext &snapc,
+ ProgressContext &prog_ctx)
+ : Request<ImageCtxT>(image_ctx, on_finish),
+ m_overlap_objects(overlap_objects),
+ m_snapc(snapc), m_prog_ctx(prog_ctx) {
+ }
+
+protected:
+ void send_op() override;
+ bool should_complete(int r) override;
+
+ journal::Event create_event(uint64_t op_tid) const override {
+ return journal::FlattenEvent(op_tid);
+ }
+
+private:
+ /**
+ * @verbatim
+ *
+ * <start>
+ * |
+ * v
+ * FLATTEN_OBJECTS
+ * |
+ * v
+ * DETACH_CHILD
+ * |
+ * v
+ * DETACH_PARENT
+ * |
+ * v
+ * <finish>
+ *
+ * @endverbatim
+ */
+
+ uint64_t m_overlap_objects;
+ ::SnapContext m_snapc;
+ ProgressContext &m_prog_ctx;
+
+ void flatten_objects();
+ void handle_flatten_objects(int r);
+
+ void detach_child();
+ void handle_detach_child(int r);
+
+ void detach_parent();
+ void handle_detach_parent(int r);
+
+};
+
+} // namespace operation
+} // namespace librbd
+
+extern template class librbd::operation::FlattenRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_OPERATION_FLATTEN_REQUEST_H