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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "common/ceph_context.h"
#include "common/ceph_json.h"
#include "common/debug.h"
#include "common/errno.h"
#include "common/WorkQueue.h"
#include "include/stringify.h"
#include "msg/Messenger.h"
#include "aio_utils.h"
#include "MirrorWatcher.h"
#include "FSMirror.h"
#include "Types.h"
#define dout_context g_ceph_context
#define dout_subsys ceph_subsys_cephfs_mirror
#undef dout_prefix
#define dout_prefix *_dout << "cephfs::mirror::MirrorWatcher " << __func__
namespace cephfs {
namespace mirror {
MirrorWatcher::MirrorWatcher(librados::IoCtx &ioctx, FSMirror *fs_mirror,
ContextWQ *work_queue)
: Watcher(ioctx, CEPHFS_MIRROR_OBJECT, work_queue),
m_ioctx(ioctx),
m_fs_mirror(fs_mirror),
m_work_queue(work_queue),
m_lock(ceph::make_mutex("cephfs::mirror::mirror_watcher")),
m_instance_id(stringify(m_ioctx.get_instance_id())) {
}
MirrorWatcher::~MirrorWatcher() {
}
void MirrorWatcher::init(Context *on_finish) {
dout(20) << dendl;
{
std::scoped_lock locker(m_lock);
ceph_assert(m_on_init_finish == nullptr);
m_on_init_finish = new LambdaContext([this, on_finish](int r) {
on_finish->complete(r);
if (m_on_shutdown_finish != nullptr) {
m_on_shutdown_finish->complete(0);
}
});
}
register_watcher();
}
void MirrorWatcher::shutdown(Context *on_finish) {
dout(20) << dendl;
{
std::scoped_lock locker(m_lock);
ceph_assert(m_on_shutdown_finish == nullptr);
if (m_on_init_finish != nullptr) {
dout(10) << ": delaying shutdown -- init in progress" << dendl;
m_on_shutdown_finish = new LambdaContext([this, on_finish](int r) {
m_on_shutdown_finish = nullptr;
shutdown(on_finish);
});
return;
}
m_on_shutdown_finish = on_finish;
}
unregister_watcher();
}
void MirrorWatcher::handle_notify(uint64_t notify_id, uint64_t handle,
uint64_t notifier_id, bufferlist& bl) {
dout(20) << dendl;
JSONFormatter f;
f.open_object_section("info");
encode_json("addr", m_fs_mirror->get_instance_addr(), &f);
f.close_section();
bufferlist outbl;
f.flush(outbl);
acknowledge_notify(notify_id, handle, outbl);
}
void MirrorWatcher::handle_rewatch_complete(int r) {
dout(5) << ": r=" << r << dendl;
if (r == -EBLOCKLISTED) {
dout(0) << ": client blocklisted" <<dendl;
std::scoped_lock locker(m_lock);
m_blocklisted = true;
m_blocklisted_ts = ceph_clock_now();
} else if (r == -ENOENT) {
derr << ": mirroring object deleted" << dendl;
m_failed = true;
m_failed_ts = ceph_clock_now();
} else if (r < 0) {
derr << ": rewatch error: " << cpp_strerror(r) << dendl;
m_failed = true;
m_failed_ts = ceph_clock_now();
}
}
void MirrorWatcher::register_watcher() {
dout(20) << dendl;
std::scoped_lock locker(m_lock);
Context *on_finish = new C_CallbackAdapter<
MirrorWatcher, &MirrorWatcher::handle_register_watcher>(this);
register_watch(on_finish);
}
void MirrorWatcher::handle_register_watcher(int r) {
dout(20) << ": r=" << r << dendl;
Context *on_init_finish = nullptr;
{
std::scoped_lock locker(m_lock);
std::swap(on_init_finish, m_on_init_finish);
}
on_init_finish->complete(r);
}
void MirrorWatcher::unregister_watcher() {
dout(20) << dendl;
std::scoped_lock locker(m_lock);
Context *on_finish = new C_CallbackAdapter<
MirrorWatcher, &MirrorWatcher::handle_unregister_watcher>(this);
unregister_watch(new C_AsyncCallback<ContextWQ>(m_work_queue, on_finish));
}
void MirrorWatcher::handle_unregister_watcher(int r) {
dout(20) << ": r=" << r << dendl;
Context *on_shutdown_finish = nullptr;
{
std::scoped_lock locker(m_lock);
std::swap(on_shutdown_finish, m_on_shutdown_finish);
}
on_shutdown_finish->complete(r);
}
} // namespace mirror
} // namespace cephfs
|
