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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPHFS_MIRROR_MIRROR_WATCHER_H
#define CEPHFS_MIRROR_MIRROR_WATCHER_H
#include <string_view>
#include "common/ceph_mutex.h"
#include "include/Context.h"
#include "include/rados/librados.hpp"
#include "Watcher.h"
class ContextWQ;
class Messenger;
namespace cephfs {
namespace mirror {
class FSMirror;
// watch for notifications via cephfs_mirror object (in metadata
// pool). this is used sending keepalived with keepalive payload
// being the rados instance address (used by the manager module
// to blocklist when needed).
class MirrorWatcher : public Watcher {
public:
static MirrorWatcher *create(librados::IoCtx &ioctx, FSMirror *fs_mirror,
ContextWQ *work_queue) {
return new MirrorWatcher(ioctx, fs_mirror, work_queue);
}
MirrorWatcher(librados::IoCtx &ioctx, FSMirror *fs_mirror,
ContextWQ *work_queue);
~MirrorWatcher();
void init(Context *on_finish);
void shutdown(Context *on_finish);
void handle_notify(uint64_t notify_id, uint64_t handle,
uint64_t notifier_id, bufferlist& bl) override;
void handle_rewatch_complete(int r) override;
bool is_blocklisted() {
std::scoped_lock locker(m_lock);
return m_blocklisted;
}
bool is_failed() {
std::scoped_lock locker(m_lock);
return m_failed;
}
private:
librados::IoCtx &m_ioctx;
FSMirror *m_fs_mirror;
ContextWQ *m_work_queue;
ceph::mutex m_lock;
std::string m_instance_id;
Context *m_on_init_finish = nullptr;
Context *m_on_shutdown_finish = nullptr;
bool m_blocklisted = false;
bool m_failed = false;
void register_watcher();
void handle_register_watcher(int r);
void unregister_watcher();
void handle_unregister_watcher(int r);
};
} // namespace mirror
} // namespace cephfs
#endif // CEPHFS_MIRROR_MIRROR_WATCHER_H
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