Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/src/librbd/PluginRegistry.h b/src/librbd/PluginRegistry.h
new file mode 100644
index 000000000..92e183ce1
--- /dev/null
+++ b/src/librbd/PluginRegistry.h
@@ -0,0 +1,51 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_PLUGIN_REGISTRY_H
+#define CEPH_LIBRBD_PLUGIN_REGISTRY_H
+
+#include "librbd/plugin/Types.h"
+#include <memory>
+#include <string>
+#include <list>
+
+struct Context;
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace cache {
+class ImageWritebackInterface;
+}
+
+namespace plugin { template <typename> struct Api; }
+
+template <typename ImageCtxT>
+class PluginRegistry {
+public:
+  PluginRegistry(ImageCtxT* image_ctx);
+  ~PluginRegistry();
+
+  void init(const std::string& plugins, Context* on_finish);
+
+  void acquired_exclusive_lock(Context* on_finish);
+  void prerelease_exclusive_lock(Context* on_finish);
+  void discard(Context* on_finish);
+
+private:
+  ImageCtxT* m_image_ctx;
+  std::unique_ptr<plugin::Api<ImageCtxT>> m_plugin_api;
+  std::unique_ptr<cache::ImageWritebackInterface> m_image_writeback;
+
+  std::string m_plugins;
+
+  plugin::PluginHookPoints m_plugin_hook_points;
+
+};
+
+} // namespace librbd
+
+extern template class librbd::PluginRegistry<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_PLUGIN_REGISTRY_H