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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_WATCHER_NOTIFIER_H
#define CEPH_LIBRBD_WATCHER_NOTIFIER_H
#include "include/int_types.h"
#include "include/buffer_fwd.h"
#include "include/Context.h"
#include "include/rados/librados.hpp"
#include "common/Mutex.h"
#include "common/WorkQueue.h"
#include <list>
namespace librbd {
namespace watcher {
struct NotifyResponse;
class Notifier {
public:
static const uint64_t NOTIFY_TIMEOUT;
Notifier(ContextWQ *work_queue, librados::IoCtx &ioctx,
const std::string &oid);
~Notifier();
void flush(Context *on_finish);
void notify(bufferlist &bl, NotifyResponse *response, Context *on_finish);
private:
typedef std::list<Context*> Contexts;
struct C_AioNotify : public Context {
Notifier *notifier;
NotifyResponse *response;
Context *on_finish;
bufferlist out_bl;
C_AioNotify(Notifier *notifier, NotifyResponse *response,
Context *on_finish);
void finish(int r) override;
};
ContextWQ *m_work_queue;
librados::IoCtx &m_ioctx;
CephContext *m_cct;
std::string m_oid;
Mutex m_aio_notify_lock;
size_t m_pending_aio_notifies = 0;
Contexts m_aio_notify_flush_ctxs;
void handle_notify(int r, Context *on_finish);
};
} // namespace watcher
} // namespace librbd
#endif // CEPH_LIBRBD_WATCHER_NOTIFIER_H
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