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Diffstat (limited to 'src/librbd/image/RemoveRequest.h')
| -rw-r--r-- | src/librbd/image/RemoveRequest.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/librbd/image/RemoveRequest.h b/src/librbd/image/RemoveRequest.h new file mode 100644 index 00000000..98d59764 --- /dev/null +++ b/src/librbd/image/RemoveRequest.h @@ -0,0 +1,198 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#ifndef CEPH_LIBRBD_IMAGE_REMOVE_REQUEST_H +#define CEPH_LIBRBD_IMAGE_REMOVE_REQUEST_H + +#include "include/rados/librados.hpp" +#include "librbd/ImageCtx.h" +#include "librbd/image/TypeTraits.h" + +#include <list> + +class Context; +class ContextWQ; +class SafeTimer; + +namespace librbd { + +class ProgressContext; + +namespace image { + +template<typename ImageCtxT = ImageCtx> +class RemoveRequest { +private: + // mock unit testing support + typedef ::librbd::image::TypeTraits<ImageCtxT> TypeTraits; + typedef typename TypeTraits::ContextWQ ContextWQ; +public: + static RemoveRequest *create(librados::IoCtx &ioctx, + const std::string &image_name, + const std::string &image_id, + bool force, bool from_trash_remove, + ProgressContext &prog_ctx, + ContextWQ *op_work_queue, + Context *on_finish) { + return new RemoveRequest(ioctx, image_name, image_id, force, + from_trash_remove, prog_ctx, op_work_queue, + on_finish); + } + + static RemoveRequest *create(librados::IoCtx &ioctx, ImageCtxT *image_ctx, + bool force, bool from_trash_remove, + ProgressContext &prog_ctx, + ContextWQ *op_work_queue, + Context *on_finish) { + return new RemoveRequest(ioctx, image_ctx, force, from_trash_remove, + prog_ctx, op_work_queue, on_finish); + } + + void send(); + +private: + /** + * @verbatim + * + * <start> + * | + * v + * (skip if already opened) OPEN IMAGE------------------\ + * | | + * v | + * PRE REMOVE IMAGE * * * | + * | * | + * v * | + * (skip if invalid data pool) TRIM IMAGE * * * * * | + * | * | + * v * | + * DETACH CHILD * | + * | * | + * v * v + * CLOSE IMAGE < * * * * | + * | | + * error v | + * /------<--------\ REMOVE HEADER<--------------/ + * | | / | + * | |-------<-------/ | + * | | v + * | | REMOVE JOURNAL + * | | / | + * | |-------<-------/ | + * | | v + * v ^ REMOVE OBJECTMAP + * | | / | + * | |-------<-------/ | + * | | v + * | | REMOVE MIRROR IMAGE + * | | / | + * | |-------<-------/ | + * | | v + * | | REMOVE ID OBJECT + * | | / | + * | |-------<-------/ | + * | | v + * | | REMOVE IMAGE + * | | / | + * | \-------<-------/ | + * | v + * \------------------>------------<finish> + * + * @endverbatim + */ + + RemoveRequest(librados::IoCtx &ioctx, const std::string &image_name, + const std::string &image_id, bool force, bool from_trash_remove, + ProgressContext &prog_ctx, ContextWQ *op_work_queue, + Context *on_finish); + + RemoveRequest(librados::IoCtx &ioctx, ImageCtxT *image_ctx, bool force, + bool from_trash_remove, ProgressContext &prog_ctx, + ContextWQ *op_work_queue, Context *on_finish); + + librados::IoCtx &m_ioctx; + std::string m_image_name; + std::string m_image_id; + ImageCtxT *m_image_ctx = nullptr; + bool m_force; + bool m_from_trash_remove; + ProgressContext &m_prog_ctx; + ContextWQ *m_op_work_queue; + Context *m_on_finish; + + CephContext *m_cct; + std::string m_header_oid; + bool m_old_format = false; + bool m_unknown_format = true; + + librados::IoCtx m_parent_io_ctx; + + decltype(m_image_ctx->exclusive_lock) m_exclusive_lock = nullptr; + + int m_ret_val = 0; + bufferlist m_out_bl; + std::list<obj_watch_t> m_watchers; + + std::map<uint64_t, SnapInfo> m_snap_infos; + + void open_image(); + void handle_open_image(int r); + + void send_journal_remove(); + void handle_journal_remove(int r); + + void send_object_map_remove(); + void handle_object_map_remove(int r); + + void mirror_image_remove(); + void handle_mirror_image_remove(int r); + + void pre_remove_image(); + void handle_pre_remove_image(int r); + + void trim_image(); + void handle_trim_image(int r); + + void detach_child(); + void handle_detach_child(int r); + + void send_disable_mirror(); + void handle_disable_mirror(int r); + + void send_close_image(int r); + void handle_send_close_image(int r); + + void remove_header(); + void handle_remove_header(int r); + + void remove_header_v2(); + void handle_remove_header_v2(int r); + + void remove_image(); + + void remove_v1_image(); + void handle_remove_v1_image(int r); + + void remove_v2_image(); + + void dir_get_image_id(); + void handle_dir_get_image_id(int r); + + void dir_get_image_name(); + void handle_dir_get_image_name(int r); + + void remove_id_object(); + void handle_remove_id_object(int r); + + void dir_remove_image(); + void handle_dir_remove_image(int r); + + void finish(int r); +}; + +} // namespace image +} // namespace librbd + +extern template class librbd::image::RemoveRequest<librbd::ImageCtx>; + +#endif // CEPH_LIBRBD_IMAGE_REMOVE_REQUEST_H |