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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_LIBRBD_EXCLUSIVE_LOCK_POST_ACQUIRE_REQUEST_H
#define CEPH_LIBRBD_EXCLUSIVE_LOCK_POST_ACQUIRE_REQUEST_H
#include "include/int_types.h"
#include "include/buffer.h"
#include "librbd/ImageCtx.h"
#include "msg/msg_types.h"
#include <string>
class Context;
namespace librbd {
namespace exclusive_lock {
template <typename ImageCtxT = ImageCtx>
class PostAcquireRequest {
public:
static PostAcquireRequest* create(ImageCtxT &image_ctx, Context *on_acquire,
Context *on_finish);
~PostAcquireRequest();
void send();
private:
/**
* @verbatim
*
* <start>
* |
* |
* v
* REFRESH (skip if not
* | needed)
* v
* OPEN_OBJECT_MAP (skip if
* | disabled)
* v
* OPEN_JOURNAL (skip if
* | * disabled)
* | *
* | * * * * * * * *
* v *
* ALLOCATE_JOURNAL_TAG *
* | * *
* | * *
* v * *
* PROCESS_PLUGIN_ACQUIRE*
* | * *
* | * *
* | v v v
* | PROCESS_PLUGIN_RELEASE
* | |
* | v
* | CLOSE_JOURNAL
* | |
* | v
* | CLOSE_OBJECT_MAP
* | |
* v |
* <finish> <----------/
*
* @endverbatim
*/
PostAcquireRequest(ImageCtxT &image_ctx, Context *on_acquire,
Context *on_finish);
ImageCtxT &m_image_ctx;
Context *m_on_acquire;
Context *m_on_finish;
decltype(m_image_ctx.object_map) m_object_map;
decltype(m_image_ctx.journal) m_journal;
bool m_prepare_lock_completed = false;
int m_error_result;
void send_refresh();
void handle_refresh(int r);
void send_open_journal();
void handle_open_journal(int r);
void send_allocate_journal_tag();
void handle_allocate_journal_tag(int r);
void send_open_object_map();
void handle_open_object_map(int r);
void send_close_journal();
void handle_close_journal(int r);
void send_close_object_map();
void handle_close_object_map(int r);
void send_process_plugin_acquire_lock();
void handle_process_plugin_acquire_lock(int r);
void send_process_plugin_release_lock();
void handle_process_plugin_release_lock(int r);
void apply();
void revert();
void finish();
void save_result(int result) {
if (m_error_result == 0 && result < 0) {
m_error_result = result;
}
}
};
} // namespace exclusive_lock
} // namespace librbd
extern template class librbd::exclusive_lock::PostAcquireRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_EXCLUSIVE_LOCK_POST_ACQUIRE_REQUEST_H
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