+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "librbd/watcher/RewatchRequest.h"
-#include "common/RWLock.h"
-#include "common/errno.h"
-#include "librbd/Utils.h"
-
-#define dout_subsys ceph_subsys_rbd
-#undef dout_prefix
-#define dout_prefix *_dout << "librbd::watcher::RewatchRequest: " \
- << this << " " << __func__ << " "
-
-namespace librbd {
-
-using util::create_context_callback;
-using util::create_rados_callback;
-
-namespace watcher {
-
-using std::string;
-
-RewatchRequest::RewatchRequest(librados::IoCtx& ioctx, const string& oid,
- RWLock &watch_lock,
- librados::WatchCtx2 *watch_ctx,
- uint64_t *watch_handle, Context *on_finish)
- : m_ioctx(ioctx), m_oid(oid), m_watch_lock(watch_lock),
- m_watch_ctx(watch_ctx), m_watch_handle(watch_handle),
- m_on_finish(on_finish) {
-}
-
-void RewatchRequest::send() {
- unwatch();
-}
-
-void RewatchRequest::unwatch() {
- assert(m_watch_lock.is_wlocked());
- assert(*m_watch_handle != 0);
-
- CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
- ldout(cct, 10) << dendl;
-
- librados::AioCompletion *aio_comp = create_rados_callback<
- RewatchRequest, &RewatchRequest::handle_unwatch>(this);
- int r = m_ioctx.aio_unwatch(*m_watch_handle, aio_comp);
- assert(r == 0);
- aio_comp->release();
-
- *m_watch_handle = 0;
-}
-
-void RewatchRequest::handle_unwatch(int r) {
- CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
- ldout(cct, 10) << "r=" << r << dendl;
-
- if (r == -EBLACKLISTED) {
- lderr(cct) << "client blacklisted" << dendl;
- finish(r);
- return;
- } else if (r < 0) {
- lderr(cct) << "failed to unwatch: " << cpp_strerror(r) << dendl;
- }
- rewatch();
-}
-
-void RewatchRequest::rewatch() {
- CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
- ldout(cct, 10) << dendl;
-
- librados::AioCompletion *aio_comp = create_rados_callback<
- RewatchRequest, &RewatchRequest::handle_rewatch>(this);
- int r = m_ioctx.aio_watch(m_oid, aio_comp, &m_rewatch_handle, m_watch_ctx);
- assert(r == 0);
- aio_comp->release();
-}
-
-void RewatchRequest::handle_rewatch(int r) {
- CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
- ldout(cct, 10) << "r=" << r << dendl;
-
- if (r == -EBLACKLISTED) {
- lderr(cct) << "client blacklisted" << dendl;
- finish(r);
- return;
- } else if (r == -ENOENT) {
- ldout(cct, 5) << "object deleted" << dendl;
- finish(r);
- return;
- } else if (r < 0) {
- lderr(cct) << "failed to watch object: " << cpp_strerror(r)
- << dendl;
- rewatch();
- return;
- }
-
- {
- RWLock::WLocker watch_locker(m_watch_lock);
- *m_watch_handle = m_rewatch_handle;
- }
-
- finish(0);
-}
-
-void RewatchRequest::finish(int r) {
- CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
- ldout(cct, 10) << "r=" << r << dendl;
-
- m_on_finish->complete(r);
- delete this;
-}
-
-} // namespace watcher
-} // namespace librbd
-