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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/tools/rbd_mirror/ImageMap.h | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tools/rbd_mirror/ImageMap.h')
-rw-r--r-- | src/tools/rbd_mirror/ImageMap.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/tools/rbd_mirror/ImageMap.h b/src/tools/rbd_mirror/ImageMap.h new file mode 100644 index 000000000..9dd61ee0d --- /dev/null +++ b/src/tools/rbd_mirror/ImageMap.h @@ -0,0 +1,175 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#ifndef CEPH_RBD_MIRROR_IMAGE_MAP_H +#define CEPH_RBD_MIRROR_IMAGE_MAP_H + +#include <vector> + +#include "common/ceph_mutex.h" +#include "include/Context.h" +#include "common/AsyncOpTracker.h" +#include "cls/rbd/cls_rbd_types.h" +#include "include/rados/librados.hpp" + +#include "image_map/Policy.h" +#include "image_map/Types.h" + +namespace librbd { class ImageCtx; } + +namespace rbd { +namespace mirror { + +template <typename> struct Threads; + +template <typename ImageCtxT = librbd::ImageCtx> +class ImageMap { +public: + static ImageMap *create(librados::IoCtx &ioctx, Threads<ImageCtxT> *threads, + const std::string& instance_id, + image_map::Listener &listener) { + return new ImageMap(ioctx, threads, instance_id, listener); + } + + ~ImageMap(); + + // init (load) the instance map from disk + void init(Context *on_finish); + + // shut down map operations + void shut_down(Context *on_finish); + + // update (add/remove) images + void update_images(const std::string &peer_uuid, + std::set<std::string> &&added_global_image_ids, + std::set<std::string> &&removed_global_image_ids); + + // add/remove instances + void update_instances_added(const std::vector<std::string> &instances); + void update_instances_removed(const std::vector<std::string> &instances); + +private: + struct C_NotifyInstance; + + ImageMap(librados::IoCtx &ioctx, Threads<ImageCtxT> *threads, + const std::string& instance_id, image_map::Listener &listener); + + struct Update { + std::string global_image_id; + std::string instance_id; + utime_t mapped_time; + + Update(const std::string &global_image_id, const std::string &instance_id, + utime_t mapped_time) + : global_image_id(global_image_id), + instance_id(instance_id), + mapped_time(mapped_time) { + } + Update(const std::string &global_image_id, const std::string &instance_id) + : Update(global_image_id, instance_id, ceph_clock_now()) { + } + + friend std::ostream& operator<<(std::ostream& os, + const Update& update) { + os << "{global_image_id=" << update.global_image_id << ", " + << "instance_id=" << update.instance_id << "}"; + return os; + } + + }; + typedef std::list<Update> Updates; + + // Lock ordering: m_threads->timer_lock, m_lock + + librados::IoCtx &m_ioctx; + Threads<ImageCtxT> *m_threads; + std::string m_instance_id; + image_map::Listener &m_listener; + + std::unique_ptr<image_map::Policy> m_policy; // our mapping policy + + Context *m_timer_task = nullptr; + ceph::mutex m_lock; + bool m_shutting_down = false; + AsyncOpTracker m_async_op_tracker; + + // global_image_id -> registered peers ("" == local, remote otherwise) + std::map<std::string, std::set<std::string> > m_peer_map; + + std::set<std::string> m_global_image_ids; + + Context *m_rebalance_task = nullptr; + + struct C_LoadMap : Context { + ImageMap *image_map; + Context *on_finish; + + std::map<std::string, cls::rbd::MirrorImageMap> image_mapping; + + C_LoadMap(ImageMap *image_map, Context *on_finish) + : image_map(image_map), + on_finish(on_finish) { + } + + void finish(int r) override { + if (r == 0) { + image_map->handle_load(image_mapping); + } + + image_map->finish_async_op(); + on_finish->complete(r); + } + }; + + // async op-tracker helper routines + void start_async_op() { + m_async_op_tracker.start_op(); + } + void finish_async_op() { + m_async_op_tracker.finish_op(); + } + void wait_for_async_ops(Context *on_finish) { + m_async_op_tracker.wait_for_ops(on_finish); + } + + void handle_peer_ack(const std::string &global_image_id, int r); + void handle_peer_ack_remove(const std::string &global_image_id, int r); + + void handle_load(const std::map<std::string, cls::rbd::MirrorImageMap> &image_mapping); + void handle_update_request(const Updates &updates, + const std::set<std::string> &remove_global_image_ids, int r); + + // continue (retry or resume depending on state machine) processing + // current action. + void continue_action(const std::set<std::string> &global_image_ids, int r); + + // schedule an image for update + void schedule_action(const std::string &global_image_id); + + void schedule_update_task(); + void schedule_update_task(const ceph::mutex &timer_lock); + void process_updates(); + void update_image_mapping(Updates&& map_updates, + std::set<std::string>&& map_removals); + + void rebalance(); + void schedule_rebalance_task(); + + void notify_listener_acquire_release_images(const Updates &acquire, const Updates &release); + void notify_listener_remove_images(const std::string &peer_uuid, const Updates &remove); + + void update_images_added(const std::string &peer_uuid, + const std::set<std::string> &global_image_ids); + void update_images_removed(const std::string &peer_uuid, + const std::set<std::string> &global_image_ids); + + void filter_instance_ids(const std::vector<std::string> &instance_ids, + std::vector<std::string> *filtered_instance_ids, + bool removal) const; + +}; + +} // namespace mirror +} // namespace rbd + +#endif // CEPH_RBD_MIRROR_IMAGE_MAP_H |