+++ /dev/null
-// -*- 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) 2004-2006 Sage Weil <sage@newdream.net>
- *
- * 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.
- *
- */
-
-/* Metadata Server Monitor
- */
-
-#ifndef CEPH_MDSMONITOR_H
-#define CEPH_MDSMONITOR_H
-
-#include <map>
-#include <set>
-using namespace std;
-
-#include "include/types.h"
-#include "mds/FSMap.h"
-#include "mds/MDSMap.h"
-#include "PaxosService.h"
-#include "msg/Messenger.h"
-#include "messages/MMDSBeacon.h"
-
-class MMonCommand;
-class MMDSLoadTargets;
-class MMDSMap;
-class FileSystemCommandHandler;
-
-class MDSMonitor : public PaxosService {
- public:
- MDSMonitor(Monitor *mn, Paxos *p, string service_name);
-
- // service methods
- void create_initial() override;
- void get_store_prefixes(std::set<string>& s) override;
- void update_from_paxos(bool *need_bootstrap) override;
- void init() override;
- void create_pending() override;
- void encode_pending(MonitorDBStore::TransactionRef t) override;
- // we don't require full versions; don't encode any.
- void encode_full(MonitorDBStore::TransactionRef t) override { }
- version_t get_trim_to() override;
-
- bool preprocess_query(MonOpRequestRef op) override; // true if processed.
- bool prepare_update(MonOpRequestRef op) override;
- bool should_propose(double& delay) override;
-
- void on_active() override;
- void on_restart() override;
-
- void check_subs();
- void check_sub(Subscription *sub);
-
- const FSMap &get_pending() const { return pending_fsmap; }
- const FSMap &get_fsmap() const { return fsmap; }
- void dump_info(Formatter *f);
- int print_nodes(Formatter *f);
-
- /**
- * Return true if a blacklist was done (i.e. OSD propose needed)
- */
- bool fail_mds_gid(mds_gid_t gid);
- protected:
- // mds maps
- FSMap fsmap; // current
- FSMap pending_fsmap; // current + pending updates
-
- // my helpers
- void print_map(FSMap &m, int dbl=7);
- void update_logger();
-
- void _updated(MonOpRequestRef op);
-
- void _note_beacon(class MMDSBeacon *m);
- bool preprocess_beacon(MonOpRequestRef op);
- bool prepare_beacon(MonOpRequestRef op);
-
- bool preprocess_offload_targets(MonOpRequestRef op);
- bool prepare_offload_targets(MonOpRequestRef op);
-
- void get_health(list<pair<health_status_t,string> >& summary,
- list<pair<health_status_t,string> > *detail,
- CephContext *cct) const override;
- int fail_mds(std::ostream &ss, const std::string &arg,
- MDSMap::mds_info_t *failed_info);
-
- bool preprocess_command(MonOpRequestRef op);
- bool prepare_command(MonOpRequestRef op);
-
- int parse_role(
- const std::string &role_str,
- mds_role_t *role,
- std::ostream &ss);
-
- void modify_legacy_filesystem(
- std::function<void(std::shared_ptr<Filesystem> )> fn);
- int legacy_filesystem_command(
- MonOpRequestRef op,
- std::string const &prefix,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss);
- int filesystem_command(
- MonOpRequestRef op,
- std::string const &prefix,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss);
-
- // beacons
- struct beacon_info_t {
- utime_t stamp;
- uint64_t seq;
- };
- map<mds_gid_t, beacon_info_t> last_beacon;
-
- bool try_standby_replay(
- const MDSMap::mds_info_t& finfo,
- const Filesystem &leader_fs,
- const MDSMap::mds_info_t& ainfo);
-
- std::list<std::shared_ptr<FileSystemCommandHandler> > handlers;
-
- bool maybe_promote_standby(std::shared_ptr<Filesystem> fs);
- bool maybe_expand_cluster(std::shared_ptr<Filesystem> fs);
- void maybe_replace_gid(mds_gid_t gid, const MDSMap::mds_info_t& info,
- bool *mds_propose, bool *osd_propose);
- void tick() override; // check state, take actions
-
- int dump_metadata(const string& who, Formatter *f, ostream& err);
-
- void update_metadata(mds_gid_t gid, const Metadata& metadata);
- void remove_from_metadata(MonitorDBStore::TransactionRef t);
- int load_metadata(map<mds_gid_t, Metadata>& m);
- void count_metadata(const string& field, Formatter *f);
-public:
- void count_metadata(const string& field, map<string,int> *out);
-protected:
-
- // MDS daemon GID to latest health state from that GID
- std::map<uint64_t, MDSHealth> pending_daemon_health;
- std::set<uint64_t> pending_daemon_health_rm;
-
-
- map<mds_gid_t, Metadata> pending_metadata;
-
- mds_gid_t gid_from_arg(const std::string& arg, std::ostream& err);
-
- // When did the mon last call into our tick() method? Used for detecting
- // when the mon was not updating us for some period (e.g. during slow
- // election) to reset last_beacon timeouts
- utime_t last_tick;
-};
-
-#endif