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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif
#include <cstdio>
#ifndef ROCKSDB_LITE
#ifdef GFLAGS
#include <gflags/gflags.h>
#include <inttypes.h>
#include <vector>
#include "rocksdb/env.h"
#include "rocksdb/options.h"
#include "table/block_based_table_builder.h"
#include "table/block_based_table_reader.h"
#include "table/format.h"
#include "tools/sst_dump_tool_imp.h"
#include "util/compression.h"
#include "util/stop_watch.h"
#include "utilities/col_buf_encoder.h"
#include "utilities/column_aware_encoding_util.h"
using GFLAGS::ParseCommandLineFlags;
DEFINE_string(encoded_file, "", "file to store encoded data blocks");
DEFINE_string(decoded_file, "",
"file to store decoded data blocks after encoding");
DEFINE_string(format, "col", "Output Format. Can be 'row' or 'col'");
// TODO(jhli): option `col` should be removed and replaced by general
// column specifications.
DEFINE_string(index_type, "col", "Index type. Can be 'primary' or 'secondary'");
DEFINE_string(dump_file, "",
"Dump data blocks separated by columns in human-readable format");
DEFINE_bool(decode, false, "Deocde blocks after they are encoded");
DEFINE_bool(stat, false,
"Print column distribution statistics. Cannot decode in this mode");
DEFINE_string(compression_type, "kNoCompression",
"The compression algorithm used to compress data blocks");
namespace rocksdb {
class ColumnAwareEncodingExp {
public:
static void Run(const std::string& sst_file) {
bool decode = FLAGS_decode;
if (FLAGS_decoded_file.size() > 0) {
decode = true;
}
if (FLAGS_stat) {
decode = false;
}
ColumnAwareEncodingReader reader(sst_file);
std::vector<ColDeclaration>* key_col_declarations;
std::vector<ColDeclaration>* value_col_declarations;
ColDeclaration* value_checksum_declaration;
if (FLAGS_index_type == "primary") {
ColumnAwareEncodingReader::GetColDeclarationsPrimary(
&key_col_declarations, &value_col_declarations,
&value_checksum_declaration);
} else {
ColumnAwareEncodingReader::GetColDeclarationsSecondary(
&key_col_declarations, &value_col_declarations,
&value_checksum_declaration);
}
KVPairColDeclarations kvp_cd(key_col_declarations, value_col_declarations,
value_checksum_declaration);
if (!FLAGS_dump_file.empty()) {
std::vector<KVPairBlock> kv_pair_blocks;
reader.GetKVPairsFromDataBlocks(&kv_pair_blocks);
reader.DumpDataColumns(FLAGS_dump_file, kvp_cd, kv_pair_blocks);
return;
}
std::unordered_map<std::string, CompressionType> compressions = {
{"kNoCompression", CompressionType::kNoCompression},
{"kZlibCompression", CompressionType::kZlibCompression},
{"kZSTD", CompressionType::kZSTD}};
// Find Compression
CompressionType compression_type = compressions[FLAGS_compression_type];
EnvOptions env_options;
if (CompressionTypeSupported(compression_type)) {
fprintf(stdout, "[%s]\n", FLAGS_compression_type.c_str());
unique_ptr<WritableFile> encoded_out_file;
std::unique_ptr<Env> env(NewMemEnv(Env::Default()));
if (!FLAGS_encoded_file.empty()) {
env->NewWritableFile(FLAGS_encoded_file, &encoded_out_file,
env_options);
}
std::vector<KVPairBlock> kv_pair_blocks;
reader.GetKVPairsFromDataBlocks(&kv_pair_blocks);
std::vector<std::string> encoded_blocks;
StopWatchNano sw(env.get(), true);
if (FLAGS_format == "col") {
reader.EncodeBlocks(kvp_cd, encoded_out_file.get(), compression_type,
kv_pair_blocks, &encoded_blocks, FLAGS_stat);
} else { // row format
reader.EncodeBlocksToRowFormat(encoded_out_file.get(), compression_type,
kv_pair_blocks, &encoded_blocks);
}
if (encoded_out_file != nullptr) {
uint64_t size = 0;
env->GetFileSize(FLAGS_encoded_file, &size);
fprintf(stdout, "File size: %" PRIu64 "\n", size);
}
uint64_t encode_time = sw.ElapsedNanosSafe(false /* reset */);
fprintf(stdout, "Encode time: %" PRIu64 "\n", encode_time);
if (decode) {
unique_ptr<WritableFile> decoded_out_file;
if (!FLAGS_decoded_file.empty()) {
env->NewWritableFile(FLAGS_decoded_file, &decoded_out_file,
env_options);
}
sw.Start();
if (FLAGS_format == "col") {
reader.DecodeBlocks(kvp_cd, decoded_out_file.get(), &encoded_blocks);
} else {
reader.DecodeBlocksFromRowFormat(decoded_out_file.get(),
&encoded_blocks);
}
uint64_t decode_time = sw.ElapsedNanosSafe(true /* reset */);
fprintf(stdout, "Decode time: %" PRIu64 "\n", decode_time);
}
} else {
fprintf(stdout, "Unsupported compression type: %s.\n",
FLAGS_compression_type.c_str());
}
delete key_col_declarations;
delete value_col_declarations;
delete value_checksum_declaration;
}
};
} // namespace rocksdb
int main(int argc, char** argv) {
int arg_idx = ParseCommandLineFlags(&argc, &argv, true);
if (arg_idx >= argc) {
fprintf(stdout, "SST filename required.\n");
exit(1);
}
std::string sst_file(argv[arg_idx]);
if (FLAGS_format != "row" && FLAGS_format != "col") {
fprintf(stderr, "Format must be 'row' or 'col'\n");
exit(1);
}
if (FLAGS_index_type != "primary" && FLAGS_index_type != "secondary") {
fprintf(stderr, "Format must be 'primary' or 'secondary'\n");
exit(1);
}
rocksdb::ColumnAwareEncodingExp::Run(sst_file);
return 0;
}
#else
int main() {
fprintf(stderr, "Please install gflags to run rocksdb tools\n");
return 1;
}
#endif // GFLAGS
#else
int main(int argc, char** argv) {
fprintf(stderr, "Not supported in lite mode.\n");
return 1;
}
#endif // ROCKSDB_LITE
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