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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_CLUSTER_WATCHER_H
#define CEPH_RBD_MIRROR_CLUSTER_WATCHER_H
#include <map>
#include <memory>
#include <set>
#include "common/ceph_context.h"
#include "common/ceph_mutex.h"
#include "common/Timer.h"
#include "include/rados/librados.hpp"
#include "tools/rbd_mirror/Types.h"
#include "tools/rbd_mirror/service_daemon/Types.h"
#include <unordered_map>
namespace librbd { struct ImageCtx; }
namespace rbd {
namespace mirror {
template <typename> class ServiceDaemon;
/**
* Tracks mirroring configuration for pools in a single
* cluster.
*/
class ClusterWatcher {
public:
struct PeerSpecCompare {
bool operator()(const PeerSpec& lhs, const PeerSpec& rhs) const {
return (lhs.uuid < rhs.uuid);
}
};
typedef std::set<PeerSpec, PeerSpecCompare> Peers;
typedef std::map<int64_t, Peers> PoolPeers;
ClusterWatcher(RadosRef cluster, ceph::mutex &lock,
ServiceDaemon<librbd::ImageCtx>* service_daemon);
~ClusterWatcher() = default;
ClusterWatcher(const ClusterWatcher&) = delete;
ClusterWatcher& operator=(const ClusterWatcher&) = delete;
// Caller controls frequency of calls
void refresh_pools();
const PoolPeers& get_pool_peers() const;
std::string get_site_name() const;
private:
typedef std::unordered_map<int64_t, service_daemon::CalloutId> ServicePools;
RadosRef m_cluster;
ceph::mutex &m_lock;
ServiceDaemon<librbd::ImageCtx>* m_service_daemon;
ServicePools m_service_pools;
PoolPeers m_pool_peers;
std::string m_site_name;
void read_pool_peers(PoolPeers *pool_peers);
int read_site_name(std::string* site_name);
int resolve_peer_site_config_keys(
int64_t pool_id, const std::string& pool_name, PeerSpec* peer);
};
} // namespace mirror
} // namespace rbd
#endif // CEPH_RBD_MIRROR_CLUSTER_WATCHER_H
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