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-rw-r--r--src/librbd/image/GetMetadataRequest.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/src/librbd/image/GetMetadataRequest.h b/src/librbd/image/GetMetadataRequest.h
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+++ b/src/librbd/image/GetMetadataRequest.h
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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_IMAGE_GET_METADATA_REQUEST_H
+#define CEPH_LIBRBD_IMAGE_GET_METADATA_REQUEST_H
+
+#include "include/common_fwd.h"
+#include "include/rados/librados.hpp"
+#include "include/rbd/librbd.hpp"
+#include <string>
+#include <map>
+
+class Context;
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace image {
+
+template <typename ImageCtxT = ImageCtx>
+class GetMetadataRequest {
+public:
+ typedef std::map<std::string, bufferlist> KeyValues;
+
+ static GetMetadataRequest* create(
+ IoCtx &io_ctx, const std::string &oid, bool filter_internal,
+ const std::string& filter_key_prefix, const std::string& last_key,
+ uint32_t max_results, KeyValues* key_values, Context *on_finish) {
+ return new GetMetadataRequest(io_ctx, oid, filter_internal,
+ filter_key_prefix, last_key, max_results,
+ key_values, on_finish);
+ }
+
+ GetMetadataRequest(
+ IoCtx &io_ctx, const std::string &oid, bool filter_internal,
+ const std::string& filter_key_prefix, const std::string& last_key,
+ uint32_t max_results, KeyValues* key_values, Context *on_finish);
+
+ void send();
+
+private:
+ /**
+ * @verbatim
+ *
+ * <start>
+ * |
+ * | /-------\
+ * | | |
+ * v v |
+ * METADATA_LIST ---/
+ * |
+ * v
+ * <finish>
+ *
+ * @endverbatim
+ */
+ librados::IoCtx m_io_ctx;
+ std::string m_oid;
+ bool m_filter_internal;
+ std::string m_filter_key_prefix;
+ std::string m_last_key;
+ uint32_t m_max_results;
+ KeyValues* m_key_values;
+ Context* m_on_finish;
+
+ CephContext* m_cct;
+ bufferlist m_out_bl;
+ uint32_t m_expected_results = 0;
+
+ void metadata_list();
+ void handle_metadata_list(int r);
+
+ void finish(int r);
+
+};
+
+} //namespace image
+} //namespace librbd
+
+extern template class librbd::image::GetMetadataRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_IMAGE_GET_METADATA_REQUEST_H