initial code repo

[stor4nfv.git] / src / ceph / src / tools / rbd_mirror / MirrorStatusWatcher.cc

diff --git a/src/ceph/src/tools/rbd_mirror/MirrorStatusWatcher.cc b/src/ceph/src/tools/rbd_mirror/MirrorStatusWatcher.cc
new file mode 100644 (file)
index 0000000..ed752ba
--- /dev/null
+++ b/src/ceph/src/tools/rbd_mirror/MirrorStatusWatcher.cc
@@ -0,0 +1,74 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "MirrorStatusWatcher.h"
+#include "common/debug.h"
+#include "common/errno.h"
+#include "cls/rbd/cls_rbd_client.h"
+#include "librbd/Utils.h"
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_rbd_mirror
+#undef dout_prefix
+#define dout_prefix *_dout << "rbd::mirror::MirrorStatusWatcher: " \
+                           << this << " " << __func__ << ": "
+
+namespace rbd {
+namespace mirror {
+
+using librbd::util::create_rados_callback;
+
+template <typename I>
+MirrorStatusWatcher<I>::MirrorStatusWatcher(librados::IoCtx &io_ctx,
+                                            ContextWQ *work_queue)
+  : Watcher(io_ctx, work_queue, RBD_MIRRORING) {
+}
+
+template <typename I>
+MirrorStatusWatcher<I>::~MirrorStatusWatcher() {
+}
+
+template <typename I>
+void MirrorStatusWatcher<I>::init(Context *on_finish) {
+  dout(20) << dendl;
+
+  on_finish = new FunctionContext(
+    [this, on_finish] (int r) {
+      if (r < 0) {
+        derr << "error removing down statuses: " << cpp_strerror(r) << dendl;
+        on_finish->complete(r);
+        return;
+      }
+      register_watch(on_finish);
+    });
+
+  librados::ObjectWriteOperation op;
+  librbd::cls_client::mirror_image_status_remove_down(&op);
+  librados::AioCompletion *aio_comp = create_rados_callback(on_finish);
+
+  int r = m_ioctx.aio_operate(RBD_MIRRORING, aio_comp, &op);
+  assert(r == 0);
+  aio_comp->release();
+}
+
+template <typename I>
+void MirrorStatusWatcher<I>::shut_down(Context *on_finish) {
+  dout(20) << dendl;
+
+  unregister_watch(on_finish);
+}
+
+template <typename I>
+void MirrorStatusWatcher<I>::handle_notify(uint64_t notify_id, uint64_t handle,
+                                           uint64_t notifier_id,
+                                           bufferlist &bl) {
+  dout(20) << dendl;
+
+  bufferlist out;
+  acknowledge_notify(notify_id, handle, out);
+}
+
+} // namespace mirror
+} // namespace rbd
+
+template class rbd::mirror::MirrorStatusWatcher<librbd::ImageCtx>;