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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_CONFIG_WATCHER_H
#define CEPH_LIBRBD_CONFIG_WATCHER_H
#include <set>
#include <string>
struct Context;
namespace librbd {
struct ImageCtx;
template <typename ImageCtxT>
class ConfigWatcher {
public:
static ConfigWatcher* create(ImageCtxT& image_ctx) {
return new ConfigWatcher(image_ctx);
}
ConfigWatcher(ImageCtxT& image_ctx);
~ConfigWatcher();
ConfigWatcher(const ConfigWatcher&) = delete;
ConfigWatcher& operator=(const ConfigWatcher&) = delete;
void init();
void shut_down();
private:
struct Observer;
ImageCtxT& m_image_ctx;
Observer* m_observer = nullptr;
void handle_global_config_change(std::set<std::string> changed);
};
} // namespace librbd
extern template class librbd::ConfigWatcher<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_CONFIG_WATCHER_H
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