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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
commit | 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch) | |
tree | e5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/librbd/managed_lock/AcquireRequest.h | |
parent | Initial commit. (diff) | |
download | ceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.tar.xz ceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.zip |
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/librbd/managed_lock/AcquireRequest.h')
-rw-r--r-- | src/librbd/managed_lock/AcquireRequest.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/librbd/managed_lock/AcquireRequest.h b/src/librbd/managed_lock/AcquireRequest.h new file mode 100644 index 00000000..20af0693 --- /dev/null +++ b/src/librbd/managed_lock/AcquireRequest.h @@ -0,0 +1,101 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#ifndef CEPH_LIBRBD_MANAGED_LOCK_ACQUIRE_REQUEST_H +#define CEPH_LIBRBD_MANAGED_LOCK_ACQUIRE_REQUEST_H + +#include "include/rados/librados.hpp" +#include "include/int_types.h" +#include "include/buffer.h" +#include "msg/msg_types.h" +#include "librbd/managed_lock/Types.h" +#include "librbd/watcher/Types.h" +#include <string> + +class Context; +class ContextWQ; + +namespace librbd { + +class Watcher; + +namespace managed_lock { + +template <typename ImageCtxT> +class AcquireRequest { +private: + typedef watcher::Traits<ImageCtxT> TypeTraits; + typedef typename TypeTraits::Watcher Watcher; + +public: + static AcquireRequest* create(librados::IoCtx& ioctx, Watcher *watcher, + ContextWQ *work_queue, const std::string& oid, + const std::string& cookie, + bool exclusive, + bool blacklist_on_break_lock, + uint32_t blacklist_expire_seconds, + Context *on_finish); + + ~AcquireRequest(); + void send(); + +private: + + /** + * @verbatim + * + * <start> + * | + * v + * GET_LOCKER + * | ^ + * | . (EBUSY && no cached locker) + * | . + * | . (EBUSY && cached locker) + * \--> LOCK_IMAGE * * * * * * * * > BREAK_LOCK . . . . . + * | ^ | . + * | | | (success) . + * | \-------------------------/ . + * v . + * <finish> < . . . . . . . . . . . . . . . . . . . + * + * @endverbatim + */ + + AcquireRequest(librados::IoCtx& ioctx, Watcher *watcher, + ContextWQ *work_queue, const std::string& oid, + const std::string& cookie, bool exclusive, + bool blacklist_on_break_lock, + uint32_t blacklist_expire_seconds, Context *on_finish); + + librados::IoCtx& m_ioctx; + Watcher *m_watcher; + CephContext *m_cct; + ContextWQ *m_work_queue; + std::string m_oid; + std::string m_cookie; + bool m_exclusive; + bool m_blacklist_on_break_lock; + uint32_t m_blacklist_expire_seconds; + Context *m_on_finish; + + bufferlist m_out_bl; + + Locker m_locker; + + void send_get_locker(); + void handle_get_locker(int r); + + void send_lock(); + void handle_lock(int r); + + void send_break_lock(); + void handle_break_lock(int r); + + void finish(int r); +}; + +} // namespace managed_lock +} // namespace librbd + +#endif // CEPH_LIBRBD_MANAGED_LOCK_ACQUIRE_REQUEST_H |