blob: eea7f3e371c9c2907116999b97f5cdf0d2916b83 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
// -*- 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) 2013 Inktank, Inc
*
* 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 CEPH_MON_QUORUM_SERVICE_H
#define CEPH_MON_QUORUM_SERVICE_H
#include <errno.h>
#include "include/types.h"
#include "include/Context.h"
#include "common/RefCountedObj.h"
#include "common/config.h"
#include "mon/Monitor.h"
class QuorumService
{
Context *tick_event = nullptr;
double tick_period;
public:
enum {
SERVICE_HEALTH = 0x01,
SERVICE_TIMECHECK = 0x02,
SERVICE_CONFIG_KEY = 0x03,
};
protected:
Monitor *mon;
epoch_t epoch;
QuorumService(Monitor *m) :
tick_period(g_conf()->mon_tick_interval),
mon(m),
epoch(0)
{
}
void cancel_tick() {
if (tick_event)
mon->timer.cancel_event(tick_event);
tick_event = NULL;
}
void start_tick() {
generic_dout(10) << __func__ << dendl;
cancel_tick();
if (tick_period <= 0)
return;
tick_event = new C_MonContext(mon, [this](int r) {
if (r < 0)
return;
tick();
});
mon->timer.add_event_after(tick_period, tick_event);
}
void set_update_period(double t) {
tick_period = t;
}
bool in_quorum() {
return (mon->is_leader() || mon->is_peon());
}
virtual bool service_dispatch(MonOpRequestRef op) = 0;
virtual void service_tick() = 0;
virtual void service_shutdown() = 0;
virtual void start_epoch() = 0;
virtual void finish_epoch() = 0;
virtual void cleanup() = 0;
public:
virtual ~QuorumService() { }
void start(epoch_t new_epoch) {
epoch = new_epoch;
start_epoch();
}
void finish() {
generic_dout(20) << "QuorumService::finish" << dendl;
finish_epoch();
}
epoch_t get_epoch() const {
return epoch;
}
bool dispatch(MonOpRequestRef op) {
return service_dispatch(op);
}
void tick() {
service_tick();
start_tick();
}
void shutdown() {
generic_dout(0) << "quorum service shutdown" << dendl;
cancel_tick();
service_shutdown();
}
virtual void init() { }
virtual int get_type() = 0;
virtual string get_name() const = 0;
};
#endif /* CEPH_MON_QUORUM_SERVICE_H */
|
