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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_OBJECT_MAP_REQUEST_H
#define CEPH_LIBRBD_OBJECT_MAP_REQUEST_H
#include "include/int_types.h"
#include "librbd/AsyncRequest.h"
class Context;
namespace librbd {
class ImageCtx;
namespace object_map {
class Request : public AsyncRequest<> {
public:
Request(ImageCtx &image_ctx, uint64_t snap_id, Context *on_finish)
: AsyncRequest(image_ctx, on_finish), m_snap_id(snap_id),
m_state(STATE_REQUEST)
{
}
void send() override = 0;
protected:
const uint64_t m_snap_id;
bool should_complete(int r) override;
int filter_return_code(int r) const override {
if (m_state == STATE_REQUEST) {
// never propagate an error back to the caller
return 0;
}
return r;
}
virtual void finish_request() {
}
private:
/**
* STATE_TIMEOUT --------\
* ^ |
* | v
* <start> ---> STATE_REQUEST ---> <finish>
* | ^
* v |
* STATE_INVALIDATE -------/
*/
enum State {
STATE_REQUEST,
STATE_TIMEOUT,
STATE_INVALIDATE
};
State m_state;
bool invalidate();
};
} // namespace object_map
} // namespace librbd
#endif // CEPH_LIBRBD_OBJECT_MAP_REQUEST_H
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