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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/librbd/watcher/RewatchRequest.h | |
parent | Initial commit. (diff) | |
download | ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.tar.xz ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/librbd/watcher/RewatchRequest.h')
-rw-r--r-- | src/librbd/watcher/RewatchRequest.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/librbd/watcher/RewatchRequest.h b/src/librbd/watcher/RewatchRequest.h new file mode 100644 index 000000000..ce5e31539 --- /dev/null +++ b/src/librbd/watcher/RewatchRequest.h @@ -0,0 +1,75 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#ifndef CEPH_LIBRBD_WATCHER_REWATCH_REQUEST_H +#define CEPH_LIBRBD_WATCHER_REWATCH_REQUEST_H + +#include "common/ceph_mutex.h" +#include "include/int_types.h" +#include "include/rados/librados.hpp" + +struct Context; + +namespace librbd { + +namespace watcher { + +class RewatchRequest { +public: + + static RewatchRequest *create(librados::IoCtx& ioctx, const std::string& oid, + ceph::shared_mutex &watch_lock, + librados::WatchCtx2 *watch_ctx, + uint64_t *watch_handle, Context *on_finish) { + return new RewatchRequest(ioctx, oid, watch_lock, watch_ctx, watch_handle, + on_finish); + } + + RewatchRequest(librados::IoCtx& ioctx, const std::string& oid, + ceph::shared_mutex &watch_lock, librados::WatchCtx2 *watch_ctx, + uint64_t *watch_handle, Context *on_finish); + + void send(); + +private: + /** + * @verbatim + * + * <start> + * | + * v + * UNWATCH + * | + * | . . . . + * | . . (recoverable error) + * v v . + * REWATCH . . . + * | + * v + * <finish> + * + * @endverbatim + */ + + librados::IoCtx& m_ioctx; + std::string m_oid; + ceph::shared_mutex &m_watch_lock; + librados::WatchCtx2 *m_watch_ctx; + uint64_t *m_watch_handle; + Context *m_on_finish; + + uint64_t m_rewatch_handle = 0; + + void unwatch(); + void handle_unwatch(int r); + + void rewatch(); + void handle_rewatch(int r); + + void finish(int r); +}; + +} // namespace watcher +} // namespace librbd + +#endif // CEPH_LIBRBD_WATCHER_REWATCH_REQUEST_H |