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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2014 John Spray <john.spray@inktank.com>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*/
#ifndef CLUSTER_STATE_H_
#define CLUSTER_STATE_H_
#include "mds/FSMap.h"
#include "mon/MgrMap.h"
#include "common/ceph_mutex.h"
#include "osdc/Objecter.h"
#include "mon/MonClient.h"
#include "mon/PGMap.h"
#include "mgr/ServiceMap.h"
class MMgrDigest;
class MMonMgrReport;
class MPGStats;
/**
* Cluster-scope state (things like cluster maps) as opposed
* to daemon-level state (things like perf counters and smart)
*/
class ClusterState
{
protected:
MonClient *monc;
Objecter *objecter;
FSMap fsmap;
ServiceMap servicemap;
mutable ceph::mutex lock = ceph::make_mutex("ClusterState");
MgrMap mgr_map;
std::map<int64_t,unsigned> existing_pools; ///< pools that exist, and pg_num, as of PGMap epoch
PGMap pg_map;
PGMap::Incremental pending_inc;
bufferlist health_json;
bufferlist mon_status_json;
class ClusterSocketHook *asok_hook;
public:
void load_digest(MMgrDigest *m);
void ingest_pgstats(ceph::ref_t<MPGStats> stats);
void update_delta_stats();
ClusterState(MonClient *monc_, Objecter *objecter_, const MgrMap& mgrmap);
void set_objecter(Objecter *objecter_);
void set_fsmap(FSMap const &new_fsmap);
void set_mgr_map(MgrMap const &new_mgrmap);
void set_service_map(ServiceMap const &new_service_map);
void notify_osdmap(const OSDMap &osd_map);
bool have_fsmap() const {
std::lock_guard l(lock);
return fsmap.get_epoch() > 0;
}
template<typename Callback, typename...Args>
auto with_servicemap(Callback&& cb, Args&&...args) const
{
std::lock_guard l(lock);
return std::forward<Callback>(cb)(servicemap, std::forward<Args>(args)...);
}
template<typename Callback, typename...Args>
auto with_fsmap(Callback&& cb, Args&&...args) const
{
std::lock_guard l(lock);
return std::forward<Callback>(cb)(fsmap, std::forward<Args>(args)...);
}
template<typename Callback, typename...Args>
auto with_mgrmap(Callback&& cb, Args&&...args) const
{
std::lock_guard l(lock);
return std::forward<Callback>(cb)(mgr_map, std::forward<Args>(args)...);
}
template<typename Callback, typename...Args>
auto with_pgmap(Callback&& cb, Args&&...args) const ->
decltype(cb(pg_map, std::forward<Args>(args)...))
{
std::lock_guard l(lock);
return std::forward<Callback>(cb)(pg_map, std::forward<Args>(args)...);
}
template<typename Callback, typename...Args>
auto with_mutable_pgmap(Callback&& cb, Args&&...args) ->
decltype(cb(pg_map, std::forward<Args>(args)...))
{
std::lock_guard l(lock);
return std::forward<Callback>(cb)(pg_map, std::forward<Args>(args)...);
}
template<typename... Args>
auto with_monmap(Args &&... args) const
{
std::lock_guard l(lock);
ceph_assert(monc != nullptr);
return monc->with_monmap(std::forward<Args>(args)...);
}
template<typename... Args>
auto with_osdmap(Args &&... args) const ->
decltype(objecter->with_osdmap(std::forward<Args>(args)...))
{
ceph_assert(objecter != nullptr);
return objecter->with_osdmap(std::forward<Args>(args)...);
}
// call cb(osdmap, pg_map, ...args) with the appropriate locks
template <typename Callback, typename ...Args>
auto with_osdmap_and_pgmap(Callback&& cb, Args&& ...args) const {
ceph_assert(objecter != nullptr);
std::lock_guard l(lock);
return objecter->with_osdmap(
std::forward<Callback>(cb),
pg_map,
std::forward<Args>(args)...);
}
template<typename Callback, typename...Args>
auto with_health(Callback&& cb, Args&&...args) const
{
std::lock_guard l(lock);
return std::forward<Callback>(cb)(health_json, std::forward<Args>(args)...);
}
template<typename Callback, typename...Args>
auto with_mon_status(Callback&& cb, Args&&...args) const
{
std::lock_guard l(lock);
return std::forward<Callback>(cb)(mon_status_json, std::forward<Args>(args)...);
}
void final_init();
void shutdown();
bool asok_command(std::string_view admin_command,
const cmdmap_t& cmdmap,
Formatter *f,
std::ostream& ss);
};
#endif
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