1 files changed, 40 insertions, 0 deletions
diff --git a/src/rocksdb/include/rocksdb/compression_type.h b/src/rocksdb/include/rocksdb/compression_type.h
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+++ b/src/rocksdb/include/rocksdb/compression_type.h
@@ -0,0 +1,40 @@
+// 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
+
+#include "rocksdb/rocksdb_namespace.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+// DB contents are stored in a set of blocks, each of which holds a
+// sequence of key,value pairs.  Each block may be compressed before
+// being stored in a file.  The following enum describes which
+// compression method (if any) is used to compress a block.
+
+enum CompressionType : unsigned char {
+  // NOTE: do not change the values of existing entries, as these are
+  // part of the persistent format on disk.
+  kNoCompression = 0x0,
+  kSnappyCompression = 0x1,
+  kZlibCompression = 0x2,
+  kBZip2Compression = 0x3,
+  kLZ4Compression = 0x4,
+  kLZ4HCCompression = 0x5,
+  kXpressCompression = 0x6,
+  kZSTD = 0x7,
+
+  // Only use kZSTDNotFinalCompression if you have to use ZSTD lib older than
+  // 0.8.0 or consider a possibility of downgrading the service or copying
+  // the database files to another service running with an older version of
+  // RocksDB that doesn't have kZSTD. Otherwise, you should use kZSTD. We will
+  // eventually remove the option from the public API.
+  kZSTDNotFinalCompression = 0x40,
+
+  // kDisableCompressionOption is used to disable some compression options.
+  kDisableCompressionOption = 0xff,
+};
+
+}  // namespace ROCKSDB_NAMESPACE