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
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "librbd/managed_lock/ReleaseRequest.h"
#include "librbd/Watcher.h"
#include "cls/lock/cls_lock_client.h"
#include "cls/lock/cls_lock_types.h"
#include "common/dout.h"
#include "common/errno.h"
#include "librbd/Utils.h"
#include "librbd/ImageCtx.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::managed_lock::ReleaseRequest: " \
<< this << " " << __func__ << ": "
namespace librbd {
namespace managed_lock {
using util::detail::C_AsyncCallback;
using util::create_context_callback;
using util::create_rados_callback;
template <typename I>
ReleaseRequest<I>* ReleaseRequest<I>::create(librados::IoCtx& ioctx,
Watcher *watcher,
ContextWQ *work_queue,
const string& oid,
const string& cookie,
Context *on_finish) {
return new ReleaseRequest(ioctx, watcher, work_queue, oid, cookie,
on_finish);
}
template <typename I>
ReleaseRequest<I>::ReleaseRequest(librados::IoCtx& ioctx, Watcher *watcher,
ContextWQ *work_queue, const string& oid,
const string& cookie, Context *on_finish)
: m_ioctx(ioctx), m_watcher(watcher), m_oid(oid), m_cookie(cookie),
m_on_finish(new C_AsyncCallback<ContextWQ>(work_queue, on_finish)) {
}
template <typename I>
ReleaseRequest<I>::~ReleaseRequest() {
}
template <typename I>
void ReleaseRequest<I>::send() {
send_unlock();
}
template <typename I>
void ReleaseRequest<I>::send_unlock() {
CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
ldout(cct, 10) << "entity=client." << m_ioctx.get_instance_id() << ", "
<< "cookie=" << m_cookie << dendl;
librados::ObjectWriteOperation op;
rados::cls::lock::unlock(&op, RBD_LOCK_NAME, m_cookie);
using klass = ReleaseRequest;
librados::AioCompletion *rados_completion =
create_rados_callback<klass, &klass::handle_unlock>(this);
int r = m_ioctx.aio_operate(m_oid, rados_completion, &op);
ceph_assert(r == 0);
rados_completion->release();
}
template <typename I>
void ReleaseRequest<I>::handle_unlock(int r) {
CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
ldout(cct, 10) << "r=" << r << dendl;
if (r < 0 && r != -ENOENT) {
lderr(cct) << "failed to unlock: " << cpp_strerror(r) << dendl;
}
finish();
}
template <typename I>
void ReleaseRequest<I>::finish() {
m_on_finish->complete(0);
delete this;
}
} // namespace managed_lock
} // namespace librbd
template class librbd::managed_lock::ReleaseRequest<librbd::ImageCtx>;
|
