1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2016 John Spray <john.spray@redhat.com>
8 * This is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License version 2.1, as published by the Free Software
11 * Foundation. See file COPYING.
14 #ifndef CEPH_MGRMONITOR_H
15 #define CEPH_MGRMONITOR_H
20 #include "include/Context.h"
22 #include "PaxosService.h"
23 #include "MonCommand.h"
25 class MgrMonitor
: public PaxosService
29 bool ever_had_active_mgr
= false;
31 std::map
<std::string
, bufferlist
> pending_metadata
;
32 std::set
<std::string
> pending_metadata_rm
;
34 utime_t first_seen_inactive
;
36 std::map
<uint64_t, ceph::coarse_mono_clock::time_point
> last_beacon
;
39 * If a standby is available, make it active, given that
40 * there is currently no active daemon.
42 * @return true if a standby was promoted
44 bool promote_standby();
46 void drop_standby(uint64_t gid
);
48 Context
*digest_event
= nullptr;
51 bool check_caps(MonOpRequestRef op
, const uuid_d
& fsid
);
53 health_status_t
should_warn_about_mgr_down();
55 // Command descriptions we've learned from the active mgr
56 std::vector
<MonCommand
> command_descs
;
57 std::vector
<MonCommand
> pending_command_descs
;
60 MgrMonitor(Monitor
*mn
, Paxos
*p
, const string
& service_name
)
61 : PaxosService(mn
, p
, service_name
)
63 ~MgrMonitor() override
{}
66 void on_shutdown() override
;
68 const MgrMap
&get_map() const { return map
; }
70 bool in_use() const { return map
.epoch
> 0; }
72 void create_initial() override
;
73 void update_from_paxos(bool *need_bootstrap
) override
;
74 void create_pending() override
;
75 void encode_pending(MonitorDBStore::TransactionRef t
) override
;
77 bool preprocess_query(MonOpRequestRef op
) override
;
78 bool prepare_update(MonOpRequestRef op
) override
;
80 bool preprocess_command(MonOpRequestRef op
);
81 bool prepare_command(MonOpRequestRef op
);
83 void encode_full(MonitorDBStore::TransactionRef t
) override
{ }
85 bool preprocess_beacon(MonOpRequestRef op
);
86 bool prepare_beacon(MonOpRequestRef op
);
88 void check_sub(Subscription
*sub
);
92 void on_active() override
;
93 void on_restart() override
;
95 void get_health(list
<pair
<health_status_t
,string
> >& summary
,
96 list
<pair
<health_status_t
,string
> > *detail
,
97 CephContext
*cct
) const override
;
100 void print_summary(Formatter
*f
, std::ostream
*ss
) const;
102 const std::vector
<MonCommand
> &get_command_descs() const {
103 return command_descs
;
106 int load_metadata(const string
& name
, std::map
<string
, string
>& m
,
108 int dump_metadata(const string
& name
, Formatter
*f
, ostream
*err
);
109 void count_metadata(const string
& field
, Formatter
*f
);
110 void count_metadata(const string
& field
, std::map
<string
,int> *out
);
112 friend class C_Updated
;