diff --git a/include/rocksdb/sst_dump_tool.h b/include/rocksdb/sst_dump_tool.h new file mode 100644 index 000000000..e3ee2a9c8 --- /dev/null +++ b/include/rocksdb/sst_dump_tool.h @@ -0,0 +1,17 @@ +// Copyright (c) 2013, 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 ROCKSDB_LITE +#pragma once + +namespace rocksdb { + +class SSTDumpTool { + public: + void Run(int argc, char** argv); +}; + +} // namespace rocksdb + +#endif // ROCKSDB_LITE diff --git a/tools/sst_dump.cc b/tools/sst_dump.cc index 03da2b840..7a83b60b3 100644 --- a/tools/sst_dump.cc +++ b/tools/sst_dump.cc @@ -4,418 +4,10 @@ // of patent rights can be found in the PATENTS file in the same directory. // -#include -#include -#include -#include - -#include "db/dbformat.h" -#include "db/memtable.h" -#include "db/write_batch_internal.h" -#include "rocksdb/db.h" -#include "rocksdb/env.h" -#include "rocksdb/iterator.h" -#include "rocksdb/slice_transform.h" -#include "rocksdb/table.h" -#include "rocksdb/table_properties.h" -#include "table/block_based_table_factory.h" -#include "table/plain_table_factory.h" -#include "table/meta_blocks.h" -#include "table/block.h" -#include "table/block_builder.h" -#include "table/format.h" -#include "util/ldb_cmd.h" -#include "util/random.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace rocksdb { - -class SstFileReader { - public: - explicit SstFileReader(const std::string& file_name, - bool verify_checksum, - bool output_hex); - - Status ReadSequential(bool print_kv, - uint64_t read_num, - bool has_from, - const std::string& from_key, - bool has_to, - const std::string& to_key); - - Status ReadTableProperties( - std::shared_ptr* table_properties); - uint64_t GetReadNumber() { return read_num_; } - TableProperties* GetInitTableProperties() { return table_properties_.get(); } - - private: - Status NewTableReader(const std::string& file_path); - Status ReadTableProperties(uint64_t table_magic_number, - RandomAccessFile* file, uint64_t file_size); - Status SetTableOptionsByMagicNumber(uint64_t table_magic_number); - Status SetOldTableOptions(); - - std::string file_name_; - uint64_t read_num_; - bool verify_checksum_; - bool output_hex_; - EnvOptions soptions_; - - Status init_result_; - unique_ptr table_reader_; - unique_ptr file_; - // options_ and internal_comparator_ will also be used in - // ReadSequential internally (specifically, seek-related operations) - Options options_; - const ImmutableCFOptions ioptions_; - InternalKeyComparator internal_comparator_; - unique_ptr table_properties_; -}; - -SstFileReader::SstFileReader(const std::string& file_path, - bool verify_checksum, - bool output_hex) - :file_name_(file_path), read_num_(0), verify_checksum_(verify_checksum), - output_hex_(output_hex), ioptions_(options_), - internal_comparator_(BytewiseComparator()) { - fprintf(stdout, "Process %s\n", file_path.c_str()); - - init_result_ = NewTableReader(file_name_); -} - -extern uint64_t kBlockBasedTableMagicNumber; -extern uint64_t kLegacyBlockBasedTableMagicNumber; -extern uint64_t kPlainTableMagicNumber; -extern uint64_t kLegacyPlainTableMagicNumber; - -Status SstFileReader::NewTableReader(const std::string& file_path) { - uint64_t magic_number; - - // read table magic number - Footer footer; - - unique_ptr file; - uint64_t file_size; - Status s = options_.env->NewRandomAccessFile(file_path, &file_, soptions_); - if (s.ok()) { - s = options_.env->GetFileSize(file_path, &file_size); - } - if (s.ok()) { - s = ReadFooterFromFile(file_.get(), file_size, &footer); - } - if (s.ok()) { - magic_number = footer.table_magic_number(); - } - - if (s.ok()) { - if (magic_number == kPlainTableMagicNumber || - magic_number == kLegacyPlainTableMagicNumber) { - soptions_.use_mmap_reads = true; - options_.env->NewRandomAccessFile(file_path, &file_, soptions_); - } - options_.comparator = &internal_comparator_; - // For old sst format, ReadTableProperties might fail but file can be read - if (ReadTableProperties(magic_number, file_.get(), file_size).ok()) { - SetTableOptionsByMagicNumber(magic_number); - } else { - SetOldTableOptions(); - } - } - - if (s.ok()) { - s = options_.table_factory->NewTableReader( - ioptions_, soptions_, internal_comparator_, std::move(file_), file_size, - &table_reader_); - } - return s; -} - -Status SstFileReader::ReadTableProperties(uint64_t table_magic_number, - RandomAccessFile* file, - uint64_t file_size) { - TableProperties* table_properties = nullptr; - Status s = rocksdb::ReadTableProperties(file, file_size, table_magic_number, - options_.env, options_.info_log.get(), - &table_properties); - if (s.ok()) { - table_properties_.reset(table_properties); - } else { - fprintf(stdout, "Not able to read table properties\n"); - } - return s; -} - -Status SstFileReader::SetTableOptionsByMagicNumber( - uint64_t table_magic_number) { - assert(table_properties_); - if (table_magic_number == kBlockBasedTableMagicNumber || - table_magic_number == kLegacyBlockBasedTableMagicNumber) { - options_.table_factory = std::make_shared(); - fprintf(stdout, "Sst file format: block-based\n"); - auto& props = table_properties_->user_collected_properties; - auto pos = props.find(BlockBasedTablePropertyNames::kIndexType); - if (pos != props.end()) { - auto index_type_on_file = static_cast( - DecodeFixed32(pos->second.c_str())); - if (index_type_on_file == - BlockBasedTableOptions::IndexType::kHashSearch) { - options_.prefix_extractor.reset(NewNoopTransform()); - } - } - } else if (table_magic_number == kPlainTableMagicNumber || - table_magic_number == kLegacyPlainTableMagicNumber) { - options_.allow_mmap_reads = true; - - PlainTableOptions plain_table_options; - plain_table_options.user_key_len = kPlainTableVariableLength; - plain_table_options.bloom_bits_per_key = 0; - plain_table_options.hash_table_ratio = 0; - plain_table_options.index_sparseness = 1; - plain_table_options.huge_page_tlb_size = 0; - plain_table_options.encoding_type = kPlain; - plain_table_options.full_scan_mode = true; - - options_.table_factory.reset(NewPlainTableFactory(plain_table_options)); - fprintf(stdout, "Sst file format: plain table\n"); - } else { - char error_msg_buffer[80]; - snprintf(error_msg_buffer, sizeof(error_msg_buffer) - 1, - "Unsupported table magic number --- %lx", - (long)table_magic_number); - return Status::InvalidArgument(error_msg_buffer); - } - - return Status::OK(); -} - -Status SstFileReader::SetOldTableOptions() { - assert(table_properties_ == nullptr); - options_.table_factory = std::make_shared(); - fprintf(stdout, "Sst file format: block-based(old version)\n"); - - return Status::OK(); -} - -Status SstFileReader::ReadSequential(bool print_kv, - uint64_t read_num, - bool has_from, - const std::string& from_key, - bool has_to, - const std::string& to_key) { - if (!table_reader_) { - return init_result_; - } - - Iterator* iter = table_reader_->NewIterator(ReadOptions(verify_checksum_, - false)); - uint64_t i = 0; - if (has_from) { - InternalKey ikey(from_key, kMaxSequenceNumber, kValueTypeForSeek); - iter->Seek(ikey.Encode()); - } else { - iter->SeekToFirst(); - } - for (; iter->Valid(); iter->Next()) { - Slice key = iter->key(); - Slice value = iter->value(); - ++i; - if (read_num > 0 && i > read_num) - break; - - ParsedInternalKey ikey; - if (!ParseInternalKey(key, &ikey)) { - std::cerr << "Internal Key [" - << key.ToString(true /* in hex*/) - << "] parse error!\n"; - continue; - } - - // If end marker was specified, we stop before it - if (has_to && BytewiseComparator()->Compare(ikey.user_key, to_key) >= 0) { - break; - } - - if (print_kv) { - fprintf(stdout, "%s => %s\n", - ikey.DebugString(output_hex_).c_str(), - value.ToString(output_hex_).c_str()); - } - } - - read_num_ += i; - - Status ret = iter->status(); - delete iter; - return ret; -} - -Status SstFileReader::ReadTableProperties( - std::shared_ptr* table_properties) { - if (!table_reader_) { - return init_result_; - } - - *table_properties = table_reader_->GetTableProperties(); - return init_result_; -} - -} // namespace rocksdb - -static void print_help() { - fprintf(stderr, - "sst_dump [--command=check|scan|none] [--verify_checksum] " - "--file=data_dir_OR_sst_file" - " [--output_hex]" - " [--input_key_hex]" - " [--from=]" - " [--to=]" - " [--read_num=NUM]" - " [--show_properties]\n"); -} - -namespace { -string HexToString(const string& str) { - string parsed; - if (str[0] != '0' || str[1] != 'x') { - fprintf(stderr, "Invalid hex input %s. Must start with 0x\n", - str.c_str()); - throw "Invalid hex input"; - } - - for (unsigned int i = 2; i < str.length();) { - int c; - sscanf(str.c_str() + i, "%2X", &c); - parsed.push_back(c); - i += 2; - } - return parsed; -} -} // namespace +#include "rocksdb/sst_dump_tool.h" int main(int argc, char** argv) { - const char* dir_or_file = nullptr; - uint64_t read_num = -1; - std::string command; - - char junk; - uint64_t n; - bool verify_checksum = false; - bool output_hex = false; - bool input_key_hex = false; - bool has_from = false; - bool has_to = false; - bool show_properties = false; - std::string from_key; - std::string to_key; - for (int i = 1; i < argc; i++) { - if (strncmp(argv[i], "--file=", 7) == 0) { - dir_or_file = argv[i] + 7; - } else if (strcmp(argv[i], "--output_hex") == 0) { - output_hex = true; - } else if (strcmp(argv[i], "--input_key_hex") == 0) { - input_key_hex = true; - } else if (sscanf(argv[i], - "--read_num=%lu%c", - (unsigned long*)&n, &junk) == 1) { - read_num = n; - } else if (strcmp(argv[i], "--verify_checksum") == 0) { - verify_checksum = true; - } else if (strncmp(argv[i], "--command=", 10) == 0) { - command = argv[i] + 10; - } else if (strncmp(argv[i], "--from=", 7) == 0) { - from_key = argv[i] + 7; - has_from = true; - } else if (strncmp(argv[i], "--to=", 5) == 0) { - to_key = argv[i] + 5; - has_to = true; - } else if (strcmp(argv[i], "--show_properties") == 0) { - show_properties = true; - } else { - print_help(); - exit(1); - } - } - - if (input_key_hex) { - if (has_from) { - from_key = HexToString(from_key); - } - if (has_to) { - to_key = HexToString(to_key); - } - } - - if (dir_or_file == nullptr) { - print_help(); - exit(1); - } - - std::vector filenames; - rocksdb::Env* env = rocksdb::Env::Default(); - rocksdb::Status st = env->GetChildren(dir_or_file, &filenames); - bool dir = true; - if (!st.ok()) { - filenames.clear(); - filenames.push_back(dir_or_file); - dir = false; - } - - fprintf(stdout, "from [%s] to [%s]\n", - rocksdb::Slice(from_key).ToString(true).c_str(), - rocksdb::Slice(to_key).ToString(true).c_str()); - - uint64_t total_read = 0; - for (size_t i = 0; i < filenames.size(); i++) { - std::string filename = filenames.at(i); - if (filename.length() <= 4 || - filename.rfind(".sst") != filename.length() - 4) { - // ignore - continue; - } - if (dir) { - filename = std::string(dir_or_file) + "/" + filename; - } - rocksdb::SstFileReader reader(filename, verify_checksum, - output_hex); - // scan all files in give file path. - if (command == "" || command == "scan" || command == "check") { - st = reader.ReadSequential(command != "check", - read_num > 0 ? (read_num - total_read) : - read_num, - has_from, from_key, has_to, to_key); - if (!st.ok()) { - fprintf(stderr, "%s: %s\n", filename.c_str(), - st.ToString().c_str()); - } - total_read += reader.GetReadNumber(); - if (read_num > 0 && total_read > read_num) { - break; - } - } - if (show_properties) { - const rocksdb::TableProperties* table_properties; - - std::shared_ptr - table_properties_from_reader; - st = reader.ReadTableProperties(&table_properties_from_reader); - if (!st.ok()) { - fprintf(stderr, "%s: %s\n", filename.c_str(), st.ToString().c_str()); - fprintf(stderr, "Try to use initial table properties\n"); - table_properties = reader.GetInitTableProperties(); - } else { - table_properties = table_properties_from_reader.get(); - } - if (table_properties != nullptr) { - fprintf(stdout, - "Table Properties:\n" - "------------------------------\n" - " %s", - table_properties->ToString("\n ", ": ").c_str()); - fprintf(stdout, "# deleted keys: %zd\n", - rocksdb::GetDeletedKeys( - table_properties->user_collected_properties)); - } - } - } + rocksdb::SSTDumpTool tool; + tool.Run(argc, argv); + return 0; } diff --git a/util/sst_dump_tool.cc b/util/sst_dump_tool.cc new file mode 100644 index 000000000..925dadc7d --- /dev/null +++ b/util/sst_dump_tool.cc @@ -0,0 +1,426 @@ +// Copyright (c) 2013, 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. +// + +#include "rocksdb/sst_dump_tool.h" + +#include +#include +#include +#include + +#include "db/dbformat.h" +#include "db/memtable.h" +#include "db/write_batch_internal.h" +#include "rocksdb/db.h" +#include "rocksdb/env.h" +#include "rocksdb/immutable_options.h" +#include "rocksdb/iterator.h" +#include "rocksdb/slice_transform.h" +#include "rocksdb/status.h" +#include "rocksdb/table.h" +#include "rocksdb/table_properties.h" +#include "table/block.h" +#include "table/block_based_table_factory.h" +#include "table/block_builder.h" +#include "table/format.h" +#include "table/meta_blocks.h" +#include "table/plain_table_factory.h" +#include "util/ldb_cmd.h" +#include "util/random.h" +#include "util/testharness.h" +#include "util/testutil.h" + +namespace rocksdb { + +class SstFileReader { + public: + explicit SstFileReader(const std::string& file_name, + bool verify_checksum, + bool output_hex); + + Status ReadSequential(bool print_kv, + uint64_t read_num, + bool has_from, + const std::string& from_key, + bool has_to, + const std::string& to_key); + + Status ReadTableProperties( + std::shared_ptr* table_properties); + uint64_t GetReadNumber() { return read_num_; } + TableProperties* GetInitTableProperties() { return table_properties_.get(); } + + private: + Status NewTableReader(const std::string& file_path); + Status ReadTableProperties(uint64_t table_magic_number, + RandomAccessFile* file, uint64_t file_size); + Status SetTableOptionsByMagicNumber(uint64_t table_magic_number); + Status SetOldTableOptions(); + + std::string file_name_; + uint64_t read_num_; + bool verify_checksum_; + bool output_hex_; + EnvOptions soptions_; + + Status init_result_; + unique_ptr table_reader_; + unique_ptr file_; + // options_ and internal_comparator_ will also be used in + // ReadSequential internally (specifically, seek-related operations) + Options options_; + const ImmutableCFOptions ioptions_; + InternalKeyComparator internal_comparator_; + unique_ptr table_properties_; +}; + +SstFileReader::SstFileReader(const std::string& file_path, + bool verify_checksum, + bool output_hex) + :file_name_(file_path), read_num_(0), verify_checksum_(verify_checksum), + output_hex_(output_hex), ioptions_(options_), + internal_comparator_(BytewiseComparator()) { + fprintf(stdout, "Process %s\n", file_path.c_str()); + + init_result_ = NewTableReader(file_name_); +} + +extern uint64_t kBlockBasedTableMagicNumber; +extern uint64_t kLegacyBlockBasedTableMagicNumber; +extern uint64_t kPlainTableMagicNumber; +extern uint64_t kLegacyPlainTableMagicNumber; + +Status SstFileReader::NewTableReader(const std::string& file_path) { + uint64_t magic_number; + + // read table magic number + Footer footer; + + unique_ptr file; + uint64_t file_size; + Status s = options_.env->NewRandomAccessFile(file_path, &file_, soptions_); + if (s.ok()) { + s = options_.env->GetFileSize(file_path, &file_size); + } + if (s.ok()) { + s = ReadFooterFromFile(file_.get(), file_size, &footer); + } + if (s.ok()) { + magic_number = footer.table_magic_number(); + } + + if (s.ok()) { + if (magic_number == kPlainTableMagicNumber || + magic_number == kLegacyPlainTableMagicNumber) { + soptions_.use_mmap_reads = true; + options_.env->NewRandomAccessFile(file_path, &file_, soptions_); + } + options_.comparator = &internal_comparator_; + // For old sst format, ReadTableProperties might fail but file can be read + if (ReadTableProperties(magic_number, file_.get(), file_size).ok()) { + SetTableOptionsByMagicNumber(magic_number); + } else { + SetOldTableOptions(); + } + } + + if (s.ok()) { + s = options_.table_factory->NewTableReader( + ioptions_, soptions_, internal_comparator_, std::move(file_), file_size, + &table_reader_); + } + return s; +} + +Status SstFileReader::ReadTableProperties(uint64_t table_magic_number, + RandomAccessFile* file, + uint64_t file_size) { + TableProperties* table_properties = nullptr; + Status s = rocksdb::ReadTableProperties(file, file_size, table_magic_number, + options_.env, options_.info_log.get(), + &table_properties); + if (s.ok()) { + table_properties_.reset(table_properties); + } else { + fprintf(stdout, "Not able to read table properties\n"); + } + return s; +} + +Status SstFileReader::SetTableOptionsByMagicNumber( + uint64_t table_magic_number) { + assert(table_properties_); + if (table_magic_number == kBlockBasedTableMagicNumber || + table_magic_number == kLegacyBlockBasedTableMagicNumber) { + options_.table_factory = std::make_shared(); + fprintf(stdout, "Sst file format: block-based\n"); + auto& props = table_properties_->user_collected_properties; + auto pos = props.find(BlockBasedTablePropertyNames::kIndexType); + if (pos != props.end()) { + auto index_type_on_file = static_cast( + DecodeFixed32(pos->second.c_str())); + if (index_type_on_file == + BlockBasedTableOptions::IndexType::kHashSearch) { + options_.prefix_extractor.reset(NewNoopTransform()); + } + } + } else if (table_magic_number == kPlainTableMagicNumber || + table_magic_number == kLegacyPlainTableMagicNumber) { + options_.allow_mmap_reads = true; + + PlainTableOptions plain_table_options; + plain_table_options.user_key_len = kPlainTableVariableLength; + plain_table_options.bloom_bits_per_key = 0; + plain_table_options.hash_table_ratio = 0; + plain_table_options.index_sparseness = 1; + plain_table_options.huge_page_tlb_size = 0; + plain_table_options.encoding_type = kPlain; + plain_table_options.full_scan_mode = true; + + options_.table_factory.reset(NewPlainTableFactory(plain_table_options)); + fprintf(stdout, "Sst file format: plain table\n"); + } else { + char error_msg_buffer[80]; + snprintf(error_msg_buffer, sizeof(error_msg_buffer) - 1, + "Unsupported table magic number --- %lx", + (long)table_magic_number); + return Status::InvalidArgument(error_msg_buffer); + } + + return Status::OK(); +} + +Status SstFileReader::SetOldTableOptions() { + assert(table_properties_ == nullptr); + options_.table_factory = std::make_shared(); + fprintf(stdout, "Sst file format: block-based(old version)\n"); + + return Status::OK(); +} + +Status SstFileReader::ReadSequential(bool print_kv, + uint64_t read_num, + bool has_from, + const std::string& from_key, + bool has_to, + const std::string& to_key) { + if (!table_reader_) { + return init_result_; + } + + Iterator* iter = table_reader_->NewIterator(ReadOptions(verify_checksum_, + false)); + uint64_t i = 0; + if (has_from) { + InternalKey ikey(from_key, kMaxSequenceNumber, kValueTypeForSeek); + iter->Seek(ikey.Encode()); + } else { + iter->SeekToFirst(); + } + for (; iter->Valid(); iter->Next()) { + Slice key = iter->key(); + Slice value = iter->value(); + ++i; + if (read_num > 0 && i > read_num) + break; + + ParsedInternalKey ikey; + if (!ParseInternalKey(key, &ikey)) { + std::cerr << "Internal Key [" + << key.ToString(true /* in hex*/) + << "] parse error!\n"; + continue; + } + + // If end marker was specified, we stop before it + if (has_to && BytewiseComparator()->Compare(ikey.user_key, to_key) >= 0) { + break; + } + + if (print_kv) { + fprintf(stdout, "%s => %s\n", + ikey.DebugString(output_hex_).c_str(), + value.ToString(output_hex_).c_str()); + } + } + + read_num_ += i; + + Status ret = iter->status(); + delete iter; + return ret; +} + +Status SstFileReader::ReadTableProperties( + std::shared_ptr* table_properties) { + if (!table_reader_) { + return init_result_; + } + + *table_properties = table_reader_->GetTableProperties(); + return init_result_; +} + +namespace { + +void print_help() { + fprintf(stderr, + "sst_dump [--command=check|scan|none] [--verify_checksum] " + "--file=data_dir_OR_sst_file" + " [--output_hex]" + " [--input_key_hex]" + " [--from=]" + " [--to=]" + " [--read_num=NUM]" + " [--show_properties]\n"); +} + +string HexToString(const string& str) { + string parsed; + if (str[0] != '0' || str[1] != 'x') { + fprintf(stderr, "Invalid hex input %s. Must start with 0x\n", + str.c_str()); + throw "Invalid hex input"; + } + + for (unsigned int i = 2; i < str.length();) { + int c; + sscanf(str.c_str() + i, "%2X", &c); + parsed.push_back(c); + i += 2; + } + return parsed; +} + +} // namespace + +void SSTDumpTool::Run(int argc, char** argv) { + const char* dir_or_file = nullptr; + uint64_t read_num = -1; + std::string command; + + char junk; + uint64_t n; + bool verify_checksum = false; + bool output_hex = false; + bool input_key_hex = false; + bool has_from = false; + bool has_to = false; + bool show_properties = false; + std::string from_key; + std::string to_key; + for (int i = 1; i < argc; i++) { + if (strncmp(argv[i], "--file=", 7) == 0) { + dir_or_file = argv[i] + 7; + } else if (strcmp(argv[i], "--output_hex") == 0) { + output_hex = true; + } else if (strcmp(argv[i], "--input_key_hex") == 0) { + input_key_hex = true; + } else if (sscanf(argv[i], + "--read_num=%lu%c", + (unsigned long*)&n, &junk) == 1) { + read_num = n; + } else if (strcmp(argv[i], "--verify_checksum") == 0) { + verify_checksum = true; + } else if (strncmp(argv[i], "--command=", 10) == 0) { + command = argv[i] + 10; + } else if (strncmp(argv[i], "--from=", 7) == 0) { + from_key = argv[i] + 7; + has_from = true; + } else if (strncmp(argv[i], "--to=", 5) == 0) { + to_key = argv[i] + 5; + has_to = true; + } else if (strcmp(argv[i], "--show_properties") == 0) { + show_properties = true; + } else { + print_help(); + exit(1); + } + } + + if (input_key_hex) { + if (has_from) { + from_key = HexToString(from_key); + } + if (has_to) { + to_key = HexToString(to_key); + } + } + + if (dir_or_file == nullptr) { + print_help(); + exit(1); + } + + std::vector filenames; + rocksdb::Env* env = rocksdb::Env::Default(); + rocksdb::Status st = env->GetChildren(dir_or_file, &filenames); + bool dir = true; + if (!st.ok()) { + filenames.clear(); + filenames.push_back(dir_or_file); + dir = false; + } + + fprintf(stdout, "from [%s] to [%s]\n", + rocksdb::Slice(from_key).ToString(true).c_str(), + rocksdb::Slice(to_key).ToString(true).c_str()); + + uint64_t total_read = 0; + for (size_t i = 0; i < filenames.size(); i++) { + std::string filename = filenames.at(i); + if (filename.length() <= 4 || + filename.rfind(".sst") != filename.length() - 4) { + // ignore + continue; + } + if (dir) { + filename = std::string(dir_or_file) + "/" + filename; + } + rocksdb::SstFileReader reader(filename, verify_checksum, + output_hex); + // scan all files in give file path. + if (command == "" || command == "scan" || command == "check") { + st = reader.ReadSequential(command != "check", + read_num > 0 ? (read_num - total_read) : + read_num, + has_from, from_key, has_to, to_key); + if (!st.ok()) { + fprintf(stderr, "%s: %s\n", filename.c_str(), + st.ToString().c_str()); + } + total_read += reader.GetReadNumber(); + if (read_num > 0 && total_read > read_num) { + break; + } + } + if (show_properties) { + const rocksdb::TableProperties* table_properties; + + std::shared_ptr + table_properties_from_reader; + st = reader.ReadTableProperties(&table_properties_from_reader); + if (!st.ok()) { + fprintf(stderr, "%s: %s\n", filename.c_str(), st.ToString().c_str()); + fprintf(stderr, "Try to use initial table properties\n"); + table_properties = reader.GetInitTableProperties(); + } else { + table_properties = table_properties_from_reader.get(); + } + if (table_properties != nullptr) { + fprintf(stdout, + "Table Properties:\n" + "------------------------------\n" + " %s", + table_properties->ToString("\n ", ": ").c_str()); + fprintf(stdout, "# deleted keys: %zd\n", + rocksdb::GetDeletedKeys( + table_properties->user_collected_properties)); + } + } + } +} +} // namespace rocksdb