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-rw-r--r--src/librbd/image/CloneRequest.h178
1 files changed, 178 insertions, 0 deletions
diff --git a/src/librbd/image/CloneRequest.h b/src/librbd/image/CloneRequest.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_IMAGE_CLONE_REQUEST_H
+#define CEPH_LIBRBD_IMAGE_CLONE_REQUEST_H
+
+#include "include/rbd/librbd.hpp"
+#include "cls/rbd/cls_rbd_types.h"
+#include "librbd/internal.h"
+
+class ConfigProxy;
+class Context;
+
+using librados::IoCtx;
+
+namespace librbd {
+namespace image {
+
+template <typename ImageCtxT = ImageCtx>
+class CloneRequest {
+public:
+ static CloneRequest *create(ConfigProxy& config, IoCtx& parent_io_ctx,
+ const std::string& parent_image_id,
+ const std::string& parent_snap_name,
+ uint64_t parent_snap_id,
+ IoCtx &c_ioctx, const std::string &c_name,
+ const std::string &c_id, ImageOptions c_options,
+ const std::string &non_primary_global_image_id,
+ const std::string &primary_mirror_uuid,
+ ContextWQ *op_work_queue, Context *on_finish) {
+ return new CloneRequest(config, parent_io_ctx, parent_image_id,
+ parent_snap_name, parent_snap_id, c_ioctx, c_name,
+ c_id, c_options, non_primary_global_image_id,
+ primary_mirror_uuid, op_work_queue, on_finish);
+ }
+
+ CloneRequest(ConfigProxy& config, IoCtx& parent_io_ctx,
+ const std::string& parent_image_id,
+ const std::string& parent_snap_name,
+ uint64_t parent_snap_id,
+ IoCtx &c_ioctx, const std::string &c_name,
+ const std::string &c_id, ImageOptions c_options,
+ const std::string &non_primary_global_image_id,
+ const std::string &primary_mirror_uuid,
+ ContextWQ *op_work_queue, Context *on_finish);
+
+ void send();
+
+private:
+ /**
+ * @verbatim
+ *
+ * <start>
+ * |
+ * v
+ * OPEN PARENT
+ * |
+ * v
+ * VALIDATE CHILD <finish>
+ * | ^
+ * v |
+ * CREATE CHILD * * * * * * * * * > CLOSE PARENT
+ * | ^
+ * v |
+ * OPEN CHILD * * * * * * * * * * > REMOVE CHILD
+ * | ^
+ * v |
+ * ATTACH PARENT * * * * * * * * > CLOSE CHILD
+ * | ^
+ * v *
+ * ATTACH CHILD * * * * * * * * * * * *
+ * | *
+ * v *
+ * GET PARENT META * * * * * * * * * ^
+ * | *
+ * v (skip if not needed) *
+ * SET CHILD META * * * * * * * * * * ^
+ * | *
+ * v (skip if not needed) *
+ * GET MIRROR MODE * * * * * * * * * ^
+ * | *
+ * v (skip if not needed) *
+ * SET MIRROR ENABLED * * * * * * * * *
+ * |
+ * v
+ * CLOSE CHILD
+ * |
+ * v
+ * CLOSE PARENT
+ * |
+ * v
+ * <finish>
+ *
+ * @endverbatim
+ */
+
+ ConfigProxy& m_config;
+ IoCtx &m_parent_io_ctx;
+ std::string m_parent_image_id;
+ std::string m_parent_snap_name;
+ uint64_t m_parent_snap_id;
+ ImageCtxT *m_parent_image_ctx;
+
+ IoCtx &m_ioctx;
+ std::string m_name;
+ std::string m_id;
+ ImageOptions m_opts;
+ cls::rbd::ParentImageSpec m_pspec;
+ ImageCtxT *m_imctx;
+ cls::rbd::MirrorMode m_mirror_mode = cls::rbd::MIRROR_MODE_DISABLED;
+ const std::string m_non_primary_global_image_id;
+ const std::string m_primary_mirror_uuid;
+ NoOpProgressContext m_no_op;
+ ContextWQ *m_op_work_queue;
+ Context *m_on_finish;
+
+ CephContext *m_cct;
+ uint64_t m_clone_format = 2;
+ bool m_use_p_features;
+ uint64_t m_features;
+ map<string, bufferlist> m_pairs;
+ std::string m_last_metadata_key;
+ bufferlist m_out_bl;
+ uint64_t m_size;
+ int m_r_saved = 0;
+
+ void validate_options();
+
+ void open_parent();
+ void handle_open_parent(int r);
+
+ void validate_parent();
+
+ void validate_child();
+ void handle_validate_child(int r);
+
+ void create_child();
+ void handle_create_child(int r);
+
+ void open_child();
+ void handle_open_child(int r);
+
+ void attach_parent();
+ void handle_attach_parent(int r);
+
+ void attach_child();
+ void handle_attach_child(int r);
+
+ void metadata_list();
+ void handle_metadata_list(int r);
+
+ void metadata_set();
+ void handle_metadata_set(int r);
+
+ void get_mirror_mode();
+ void handle_get_mirror_mode(int r);
+
+ void enable_mirror();
+ void handle_enable_mirror(int r);
+
+ void close_child();
+ void handle_close_child(int r);
+
+ void remove_child();
+ void handle_remove_child(int r);
+
+ void close_parent();
+ void handle_close_parent(int r);
+
+ void complete(int r);
+};
+
+} //namespace image
+} //namespace librbd
+
+extern template class librbd::image::CloneRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_IMAGE_CLONE_REQUEST_H