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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_RBD_MIRROR_NAMESPACE_REPLAYER_H
#define CEPH_RBD_MIRROR_NAMESPACE_REPLAYER_H
#include "common/AsyncOpTracker.h"
#include "common/ceph_mutex.h"
#include "include/rados/librados.hpp"
#include "tools/rbd_mirror/ImageDeleter.h"
#include "tools/rbd_mirror/ImageMap.h"
#include "tools/rbd_mirror/InstanceReplayer.h"
#include "tools/rbd_mirror/InstanceWatcher.h"
#include "tools/rbd_mirror/MirrorStatusUpdater.h"
#include "tools/rbd_mirror/PoolWatcher.h"
#include "tools/rbd_mirror/Types.h"
#include "tools/rbd_mirror/image_map/Types.h"
#include "tools/rbd_mirror/pool_watcher/Types.h"
#include <memory>
#include <string>
#include <vector>
class AdminSocketHook;
namespace journal { struct CacheManagerHandler; }
namespace librbd { class ImageCtx; }
namespace rbd {
namespace mirror {
struct PoolMetaCache;
template <typename> class ServiceDaemon;
template <typename> class Throttler;
template <typename> struct Threads;
/**
* Controls mirroring for a single remote cluster.
*/
template <typename ImageCtxT = librbd::ImageCtx>
class NamespaceReplayer {
public:
static NamespaceReplayer *create(
const std::string &name,
librados::IoCtx &local_ioctx,
librados::IoCtx &remote_ioctx,
const std::string &local_mirror_uuid,
const std::string &local_mirror_peer_uuid,
const RemotePoolMeta& remote_pool_meta,
Threads<ImageCtxT> *threads,
Throttler<ImageCtxT> *image_sync_throttler,
Throttler<ImageCtxT> *image_deletion_throttler,
ServiceDaemon<ImageCtxT> *service_daemon,
journal::CacheManagerHandler *cache_manager_handler,
PoolMetaCache* pool_meta_cache) {
return new NamespaceReplayer(name, local_ioctx, remote_ioctx,
local_mirror_uuid, local_mirror_peer_uuid,
remote_pool_meta, threads,
image_sync_throttler, image_deletion_throttler,
service_daemon, cache_manager_handler,
pool_meta_cache);
}
NamespaceReplayer(const std::string &name,
librados::IoCtx &local_ioctx,
librados::IoCtx &remote_ioctx,
const std::string &local_mirror_uuid,
const std::string& local_mirror_peer_uuid,
const RemotePoolMeta& remote_pool_meta,
Threads<ImageCtxT> *threads,
Throttler<ImageCtxT> *image_sync_throttler,
Throttler<ImageCtxT> *image_deletion_throttler,
ServiceDaemon<ImageCtxT> *service_daemon,
journal::CacheManagerHandler *cache_manager_handler,
PoolMetaCache* pool_meta_cache);
NamespaceReplayer(const NamespaceReplayer&) = delete;
NamespaceReplayer& operator=(const NamespaceReplayer&) = delete;
bool is_blocklisted() const;
void init(Context *on_finish);
void shut_down(Context *on_finish);
void handle_acquire_leader(Context *on_finish);
void handle_release_leader(Context *on_finish);
void handle_update_leader(const std::string &leader_instance_id);
void handle_instances_added(const std::vector<std::string> &instance_ids);
void handle_instances_removed(const std::vector<std::string> &instance_ids);
void print_status(Formatter *f);
void start();
void stop();
void restart();
void flush();
private:
/**
* @verbatim
*
* <uninitialized> <------------------------------------\
* | (init) ^ (error) |
* v * |
* INIT_LOCAL_STATUS_UPDATER * * * * * * * * > SHUT_DOWN_LOCAL_STATUS_UPDATER
* | * (error) ^
* v * |
* INIT_REMOTE_STATUS_UPDATER * * * * * * * > SHUT_DOWN_REMOTE_STATUS_UPDATER
* | * (error) ^
* v * |
* INIT_INSTANCE_REPLAYER * * * * * * * * * > SHUT_DOWN_INSTANCE_REPLAYER
* | * ^
* v * |
* INIT_INSTANCE_WATCHER * * * * * * * * * * SHUT_DOWN_INSTANCE_WATCHER
* | (error) ^
* | |
* v STOP_INSTANCE_REPLAYER
* | ^
* | (shut down) |
* | /----------------------------------------------/
* v |
* <follower> <---------------------------\
* . |
* . |
* v (leader acquired) |
* INIT_IMAGE_MAP |
* | |
* v |
* INIT_LOCAL_POOL_WATCHER SHUT_DOWN_IMAGE_MAP
* | ^
* v |
* INIT_REMOTE_POOL_WATCHER SHUT_DOWN_POOL_WATCHERS
* | ^
* v |
* INIT_IMAGE_DELETER SHUT_DOWN_IMAGE_DELETER
* | ^
* v .
* <leader> <-----------\ .
* . | .
* . (image update) | .
* . . > NOTIFY_INSTANCE_WATCHER .
* . .
* . (leader lost / shut down) .
* . . . . . . . . . . . . . . . . . . .
*
* @endverbatim
*/
struct PoolWatcherListener : public pool_watcher::Listener {
NamespaceReplayer *namespace_replayer;
bool local;
PoolWatcherListener(NamespaceReplayer *namespace_replayer, bool local)
: namespace_replayer(namespace_replayer), local(local) {
}
void handle_update(const std::string &mirror_uuid,
ImageIds &&added_image_ids,
ImageIds &&removed_image_ids) override {
namespace_replayer->handle_update((local ? "" : mirror_uuid),
std::move(added_image_ids),
std::move(removed_image_ids));
}
};
struct ImageMapListener : public image_map::Listener {
NamespaceReplayer *namespace_replayer;
ImageMapListener(NamespaceReplayer *namespace_replayer)
: namespace_replayer(namespace_replayer) {
}
void acquire_image(const std::string &global_image_id,
const std::string &instance_id,
Context* on_finish) override {
namespace_replayer->handle_acquire_image(global_image_id, instance_id,
on_finish);
}
void release_image(const std::string &global_image_id,
const std::string &instance_id,
Context* on_finish) override {
namespace_replayer->handle_release_image(global_image_id, instance_id,
on_finish);
}
void remove_image(const std::string &mirror_uuid,
const std::string &global_image_id,
const std::string &instance_id,
Context* on_finish) override {
namespace_replayer->handle_remove_image(mirror_uuid, global_image_id,
instance_id, on_finish);
}
};
void handle_update(const std::string &mirror_uuid,
ImageIds &&added_image_ids,
ImageIds &&removed_image_ids);
int init_rados(const std::string &cluster_name,
const std::string &client_name,
const std::string &mon_host,
const std::string &key,
const std::string &description, RadosRef *rados_ref,
bool strip_cluster_overrides);
void init_local_status_updater();
void handle_init_local_status_updater(int r);
void init_remote_status_updater();
void handle_init_remote_status_updater(int r);
void init_instance_replayer();
void handle_init_instance_replayer(int r);
void init_instance_watcher();
void handle_init_instance_watcher(int r);
void stop_instance_replayer();
void handle_stop_instance_replayer(int r);
void shut_down_instance_watcher();
void handle_shut_down_instance_watcher(int r);
void shut_down_instance_replayer();
void handle_shut_down_instance_replayer(int r);
void shut_down_remote_status_updater();
void handle_shut_down_remote_status_updater(int r);
void shut_down_local_status_updater();
void handle_shut_down_local_status_updater(int r);
void init_image_map(Context *on_finish);
void handle_init_image_map(int r, ImageMap<ImageCtxT> *image_map,
Context *on_finish);
void init_local_pool_watcher(Context *on_finish);
void handle_init_local_pool_watcher(int r, Context *on_finish);
void init_remote_pool_watcher(Context *on_finish);
void handle_init_remote_pool_watcher(int r, Context *on_finish);
void init_image_deleter(Context* on_finish);
void handle_init_image_deleter(int r, Context* on_finish);
void shut_down_image_deleter(Context* on_finish);
void handle_shut_down_image_deleter(int r, Context* on_finish);
void shut_down_pool_watchers(Context *on_finish);
void handle_shut_down_pool_watchers(int r, Context *on_finish);
void shut_down_image_map(Context *on_finish);
void handle_shut_down_image_map(int r, Context *on_finish);
void handle_acquire_image(const std::string &global_image_id,
const std::string &instance_id,
Context* on_finish);
void handle_release_image(const std::string &global_image_id,
const std::string &instance_id,
Context* on_finish);
void handle_remove_image(const std::string &mirror_uuid,
const std::string &global_image_id,
const std::string &instance_id,
Context* on_finish);
std::string m_namespace_name;
librados::IoCtx m_local_io_ctx;
librados::IoCtx m_remote_io_ctx;
std::string m_local_mirror_uuid;
std::string m_local_mirror_peer_uuid;
RemotePoolMeta m_remote_pool_meta;
Threads<ImageCtxT> *m_threads;
Throttler<ImageCtxT> *m_image_sync_throttler;
Throttler<ImageCtxT> *m_image_deletion_throttler;
ServiceDaemon<ImageCtxT> *m_service_daemon;
journal::CacheManagerHandler *m_cache_manager_handler;
PoolMetaCache* m_pool_meta_cache;
mutable ceph::mutex m_lock;
int m_ret_val = 0;
Context *m_on_finish = nullptr;
std::unique_ptr<MirrorStatusUpdater<ImageCtxT>> m_local_status_updater;
std::unique_ptr<MirrorStatusUpdater<ImageCtxT>> m_remote_status_updater;
PoolWatcherListener m_local_pool_watcher_listener;
std::unique_ptr<PoolWatcher<ImageCtxT>> m_local_pool_watcher;
PoolWatcherListener m_remote_pool_watcher_listener;
std::unique_ptr<PoolWatcher<ImageCtxT>> m_remote_pool_watcher;
std::unique_ptr<InstanceReplayer<ImageCtxT>> m_instance_replayer;
std::unique_ptr<ImageDeleter<ImageCtxT>> m_image_deleter;
ImageMapListener m_image_map_listener;
std::unique_ptr<ImageMap<ImageCtxT>> m_image_map;
std::unique_ptr<InstanceWatcher<ImageCtxT>> m_instance_watcher;
};
} // namespace mirror
} // namespace rbd
extern template class rbd::mirror::NamespaceReplayer<librbd::ImageCtx>;
#endif // CEPH_RBD_MIRROR_NAMESPACE_REPLAYER_H
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