initial code repo

[stor4nfv.git] / src / ceph / src / librbd / managed_lock / ReleaseRequest.cc

diff --git a/src/ceph/src/librbd/managed_lock/ReleaseRequest.cc b/src/ceph/src/librbd/managed_lock/ReleaseRequest.cc
new file mode 100644 (file)
index 0000000..0ccf674
--- /dev/null
+++ b/src/ceph/src/librbd/managed_lock/ReleaseRequest.cc
@@ -0,0 +1,94 @@
+// -*- 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);
+  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>;
+