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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "librbd/managed_lock/ReacquireRequest.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/ImageCtx.h"
#include "librbd/Utils.h"
#include "librbd/managed_lock/Utils.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::managed_lock::ReacquireRequest: " \
<< this << ": " << __func__
using std::string;
namespace librbd {
namespace managed_lock {
using librbd::util::create_rados_callback;
template <typename I>
ReacquireRequest<I>::ReacquireRequest(librados::IoCtx& ioctx,
const string& oid,
const string& old_cookie,
const string &new_cookie,
bool exclusive,
Context *on_finish)
: m_ioctx(ioctx), m_oid(oid), m_old_cookie(old_cookie),
m_new_cookie(new_cookie), m_exclusive(exclusive), m_on_finish(on_finish) {
}
template <typename I>
void ReacquireRequest<I>::send() {
set_cookie();
}
template <typename I>
void ReacquireRequest<I>::set_cookie() {
CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
ldout(cct, 10) << dendl;
librados::ObjectWriteOperation op;
rados::cls::lock::set_cookie(&op, RBD_LOCK_NAME,
m_exclusive ? ClsLockType::EXCLUSIVE : ClsLockType::SHARED,
m_old_cookie, util::get_watcher_lock_tag(),
m_new_cookie);
librados::AioCompletion *rados_completion = create_rados_callback<
ReacquireRequest, &ReacquireRequest::handle_set_cookie>(this);
int r = m_ioctx.aio_operate(m_oid, rados_completion, &op);
ceph_assert(r == 0);
rados_completion->release();
}
template <typename I>
void ReacquireRequest<I>::handle_set_cookie(int r) {
CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
ldout(cct, 10) << ": r=" << r << dendl;
if (r == -EOPNOTSUPP) {
ldout(cct, 10) << ": OSD doesn't support updating lock" << dendl;
} else if (r < 0) {
lderr(cct) << ": failed to update lock: " << cpp_strerror(r) << dendl;
}
m_on_finish->complete(r);
delete this;
}
} // namespace managed_lock
} // namespace librbd
template class librbd::managed_lock::ReacquireRequest<librbd::ImageCtx>;
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