Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

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

1 files changed, 57 insertions, 0 deletions

diff --git a/src/rocksdb/utilities/blob_db/blob_dump_tool.h b/src/rocksdb/utilities/blob_db/blob_dump_tool.h
new file mode 100644
index 000000000..498543ada
--- /dev/null
+++ b/src/rocksdb/utilities/blob_db/blob_dump_tool.h
@@ -0,0 +1,57 @@
+//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+#pragma once
+#ifndef ROCKSDB_LITE
+
+#include <memory>
+#include <string>
+#include <utility>
+#include "file/random_access_file_reader.h"
+#include "rocksdb/slice.h"
+#include "rocksdb/status.h"
+#include "utilities/blob_db/blob_log_format.h"
+
+namespace ROCKSDB_NAMESPACE {
+namespace blob_db {
+
+class BlobDumpTool {
+ public:
+  enum class DisplayType {
+    kNone,
+    kRaw,
+    kHex,
+    kDetail,
+  };
+
+  BlobDumpTool();
+
+  Status Run(const std::string& filename, DisplayType show_key,
+             DisplayType show_blob, DisplayType show_uncompressed_blob,
+             bool show_summary);
+
+ private:
+  std::unique_ptr<RandomAccessFileReader> reader_;
+  std::unique_ptr<char[]> buffer_;
+  size_t buffer_size_;
+
+  Status Read(uint64_t offset, size_t size, Slice* result);
+  Status DumpBlobLogHeader(uint64_t* offset, CompressionType* compression);
+  Status DumpBlobLogFooter(uint64_t file_size, uint64_t* footer_offset);
+  Status DumpRecord(DisplayType show_key, DisplayType show_blob,
+                    DisplayType show_uncompressed_blob, bool show_summary,
+                    CompressionType compression, uint64_t* offset,
+                    uint64_t* total_records, uint64_t* total_key_size,
+                    uint64_t* total_blob_size,
+                    uint64_t* total_uncompressed_blob_size);
+  void DumpSlice(const Slice s, DisplayType type);
+
+  template <class T>
+  std::string GetString(std::pair<T, T> p);
+};
+
+}  // namespace blob_db
+}  // namespace ROCKSDB_NAMESPACE
+
+#endif  // ROCKSDB_LITE