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ldb_cmd.cc
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// 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).
//
#include "rocksdb/utilities/ldb_cmd.h"
#include <cinttypes>
#include <cstdlib>
#include <ctime>
#include <fstream>
#include <functional>
#include <iostream>
#include <limits>
#include <sstream>
#include <stdexcept>
#include <string>
#include "db/blob/blob_index.h"
#include "db/db_impl/db_impl.h"
#include "db/dbformat.h"
#include "db/log_reader.h"
#include "db/version_util.h"
#include "db/write_batch_internal.h"
#include "file/filename.h"
#include "rocksdb/cache.h"
#include "rocksdb/experimental.h"
#include "rocksdb/file_checksum.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/options.h"
#include "rocksdb/table_properties.h"
#include "rocksdb/utilities/backup_engine.h"
#include "rocksdb/utilities/checkpoint.h"
#include "rocksdb/utilities/debug.h"
#include "rocksdb/utilities/options_util.h"
#include "rocksdb/write_batch.h"
#include "rocksdb/write_buffer_manager.h"
#include "table/scoped_arena_iterator.h"
#include "table/sst_file_dumper.h"
#include "tools/ldb_cmd_impl.h"
#include "util/cast_util.h"
#include "util/coding.h"
#include "util/file_checksum_helper.h"
#include "util/stderr_logger.h"
#include "util/string_util.h"
#include "utilities/blob_db/blob_dump_tool.h"
#include "utilities/merge_operators.h"
#include "utilities/ttl/db_ttl_impl.h"
namespace ROCKSDB_NAMESPACE {
class FileChecksumGenCrc32c;
class FileChecksumGenCrc32cFactory;
const std::string LDBCommand::ARG_ENV_URI = "env_uri";
const std::string LDBCommand::ARG_FS_URI = "fs_uri";
const std::string LDBCommand::ARG_DB = "db";
const std::string LDBCommand::ARG_PATH = "path";
const std::string LDBCommand::ARG_SECONDARY_PATH = "secondary_path";
const std::string LDBCommand::ARG_HEX = "hex";
const std::string LDBCommand::ARG_KEY_HEX = "key_hex";
const std::string LDBCommand::ARG_VALUE_HEX = "value_hex";
const std::string LDBCommand::ARG_CF_NAME = "column_family";
const std::string LDBCommand::ARG_TTL = "ttl";
const std::string LDBCommand::ARG_TTL_START = "start_time";
const std::string LDBCommand::ARG_TTL_END = "end_time";
const std::string LDBCommand::ARG_TIMESTAMP = "timestamp";
const std::string LDBCommand::ARG_TRY_LOAD_OPTIONS = "try_load_options";
const std::string LDBCommand::ARG_DISABLE_CONSISTENCY_CHECKS =
"disable_consistency_checks";
const std::string LDBCommand::ARG_IGNORE_UNKNOWN_OPTIONS =
"ignore_unknown_options";
const std::string LDBCommand::ARG_FROM = "from";
const std::string LDBCommand::ARG_TO = "to";
const std::string LDBCommand::ARG_MAX_KEYS = "max_keys";
const std::string LDBCommand::ARG_BLOOM_BITS = "bloom_bits";
const std::string LDBCommand::ARG_FIX_PREFIX_LEN = "fix_prefix_len";
const std::string LDBCommand::ARG_COMPRESSION_TYPE = "compression_type";
const std::string LDBCommand::ARG_COMPRESSION_MAX_DICT_BYTES =
"compression_max_dict_bytes";
const std::string LDBCommand::ARG_BLOCK_SIZE = "block_size";
const std::string LDBCommand::ARG_AUTO_COMPACTION = "auto_compaction";
const std::string LDBCommand::ARG_DB_WRITE_BUFFER_SIZE = "db_write_buffer_size";
const std::string LDBCommand::ARG_WRITE_BUFFER_SIZE = "write_buffer_size";
const std::string LDBCommand::ARG_FILE_SIZE = "file_size";
const std::string LDBCommand::ARG_CREATE_IF_MISSING = "create_if_missing";
const std::string LDBCommand::ARG_NO_VALUE = "no_value";
const std::string LDBCommand::ARG_ENABLE_BLOB_FILES = "enable_blob_files";
const std::string LDBCommand::ARG_MIN_BLOB_SIZE = "min_blob_size";
const std::string LDBCommand::ARG_BLOB_FILE_SIZE = "blob_file_size";
const std::string LDBCommand::ARG_BLOB_COMPRESSION_TYPE =
"blob_compression_type";
const std::string LDBCommand::ARG_ENABLE_BLOB_GARBAGE_COLLECTION =
"enable_blob_garbage_collection";
const std::string LDBCommand::ARG_BLOB_GARBAGE_COLLECTION_AGE_CUTOFF =
"blob_garbage_collection_age_cutoff";
const std::string LDBCommand::ARG_BLOB_GARBAGE_COLLECTION_FORCE_THRESHOLD =
"blob_garbage_collection_force_threshold";
const std::string LDBCommand::ARG_BLOB_COMPACTION_READAHEAD_SIZE =
"blob_compaction_readahead_size";
const std::string LDBCommand::ARG_BLOB_FILE_STARTING_LEVEL =
"blob_file_starting_level";
const std::string LDBCommand::ARG_PREPOPULATE_BLOB_CACHE =
"prepopulate_blob_cache";
const std::string LDBCommand::ARG_DECODE_BLOB_INDEX = "decode_blob_index";
const std::string LDBCommand::ARG_DUMP_UNCOMPRESSED_BLOBS =
"dump_uncompressed_blobs";
const char* LDBCommand::DELIM = " ==> ";
namespace {
void DumpWalFile(Options options, std::string wal_file, bool print_header,
bool print_values, bool is_write_committed,
LDBCommandExecuteResult* exec_state);
void DumpSstFile(Options options, std::string filename, bool output_hex,
bool show_properties, bool decode_blob_index,
std::string from_key = "", std::string to_key = "");
void DumpBlobFile(const std::string& filename, bool is_key_hex,
bool is_value_hex, bool dump_uncompressed_blobs);
}; // namespace
LDBCommand* LDBCommand::InitFromCmdLineArgs(
int argc, char const* const* argv, const Options& options,
const LDBOptions& ldb_options,
const std::vector<ColumnFamilyDescriptor>* column_families) {
std::vector<std::string> args;
for (int i = 1; i < argc; i++) {
args.push_back(argv[i]);
}
return InitFromCmdLineArgs(args, options, ldb_options, column_families,
SelectCommand);
}
/**
* Parse the command-line arguments and create the appropriate LDBCommand2
* instance.
* The command line arguments must be in the following format:
* ./ldb --db=PATH_TO_DB [--commonOpt1=commonOpt1Val] ..
* COMMAND <PARAM1> <PARAM2> ... [-cmdSpecificOpt1=cmdSpecificOpt1Val] ..
* This is similar to the command line format used by HBaseClientTool.
* Command name is not included in args.
* Returns nullptr if the command-line cannot be parsed.
*/
LDBCommand* LDBCommand::InitFromCmdLineArgs(
const std::vector<std::string>& args, const Options& options,
const LDBOptions& ldb_options,
const std::vector<ColumnFamilyDescriptor>* /*column_families*/,
const std::function<LDBCommand*(const ParsedParams&)>& selector) {
// --x=y command line arguments are added as x->y map entries in
// parsed_params.option_map.
//
// Command-line arguments of the form --hex end up in this array as hex to
// parsed_params.flags
ParsedParams parsed_params;
// Everything other than option_map and flags. Represents commands
// and their parameters. For eg: put key1 value1 go into this vector.
std::vector<std::string> cmdTokens;
const std::string OPTION_PREFIX = "--";
for (const auto& arg : args) {
if (arg[0] == '-' && arg[1] == '-') {
std::vector<std::string> splits = StringSplit(arg, '=');
// --option_name=option_value
if (splits.size() == 2) {
std::string optionKey = splits[0].substr(OPTION_PREFIX.size());
parsed_params.option_map[optionKey] = splits[1];
} else if (splits.size() == 1) {
// --flag_name
std::string optionKey = splits[0].substr(OPTION_PREFIX.size());
parsed_params.flags.push_back(optionKey);
} else {
// --option_name=option_value, option_value contains '='
std::string optionKey = splits[0].substr(OPTION_PREFIX.size());
parsed_params.option_map[optionKey] =
arg.substr(splits[0].length() + 1);
}
} else {
cmdTokens.push_back(arg);
}
}
if (cmdTokens.size() < 1) {
fprintf(stderr, "Command not specified!");
return nullptr;
}
parsed_params.cmd = cmdTokens[0];
parsed_params.cmd_params.assign(cmdTokens.begin() + 1, cmdTokens.end());
LDBCommand* command = selector(parsed_params);
if (command) {
command->SetDBOptions(options);
command->SetLDBOptions(ldb_options);
}
return command;
}
LDBCommand* LDBCommand::SelectCommand(const ParsedParams& parsed_params) {
if (parsed_params.cmd == GetCommand::Name()) {
return new GetCommand(parsed_params.cmd_params, parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == PutCommand::Name()) {
return new PutCommand(parsed_params.cmd_params, parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == BatchPutCommand::Name()) {
return new BatchPutCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == ScanCommand::Name()) {
return new ScanCommand(parsed_params.cmd_params, parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == DeleteCommand::Name()) {
return new DeleteCommand(parsed_params.cmd_params, parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == SingleDeleteCommand::Name()) {
return new SingleDeleteCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == DeleteRangeCommand::Name()) {
return new DeleteRangeCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == ApproxSizeCommand::Name()) {
return new ApproxSizeCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == DBQuerierCommand::Name()) {
return new DBQuerierCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == CompactorCommand::Name()) {
return new CompactorCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == WALDumperCommand::Name()) {
return new WALDumperCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == ReduceDBLevelsCommand::Name()) {
return new ReduceDBLevelsCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == ChangeCompactionStyleCommand::Name()) {
return new ChangeCompactionStyleCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == DBDumperCommand::Name()) {
return new DBDumperCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == DBLoaderCommand::Name()) {
return new DBLoaderCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == ManifestDumpCommand::Name()) {
return new ManifestDumpCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == FileChecksumDumpCommand::Name()) {
return new FileChecksumDumpCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == GetPropertyCommand::Name()) {
return new GetPropertyCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == ListColumnFamiliesCommand::Name()) {
return new ListColumnFamiliesCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == CreateColumnFamilyCommand::Name()) {
return new CreateColumnFamilyCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == DropColumnFamilyCommand::Name()) {
return new DropColumnFamilyCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == DBFileDumperCommand::Name()) {
return new DBFileDumperCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == DBLiveFilesMetadataDumperCommand::Name()) {
return new DBLiveFilesMetadataDumperCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == InternalDumpCommand::Name()) {
return new InternalDumpCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == CheckConsistencyCommand::Name()) {
return new CheckConsistencyCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == CheckPointCommand::Name()) {
return new CheckPointCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == RepairCommand::Name()) {
return new RepairCommand(parsed_params.cmd_params, parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == BackupCommand::Name()) {
return new BackupCommand(parsed_params.cmd_params, parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == RestoreCommand::Name()) {
return new RestoreCommand(parsed_params.cmd_params,
parsed_params.option_map, parsed_params.flags);
} else if (parsed_params.cmd == WriteExternalSstFilesCommand::Name()) {
return new WriteExternalSstFilesCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == IngestExternalSstFilesCommand::Name()) {
return new IngestExternalSstFilesCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == ListFileRangeDeletesCommand::Name()) {
return new ListFileRangeDeletesCommand(parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == UnsafeRemoveSstFileCommand::Name()) {
return new UnsafeRemoveSstFileCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
} else if (parsed_params.cmd == UpdateManifestCommand::Name()) {
return new UpdateManifestCommand(parsed_params.cmd_params,
parsed_params.option_map,
parsed_params.flags);
}
return nullptr;
}
/* Run the command, and return the execute result. */
void LDBCommand::Run() {
if (!exec_state_.IsNotStarted()) {
return;
}
if (!options_.env || options_.env == Env::Default()) {
Env* env = Env::Default();
Status s = Env::CreateFromUri(config_options_, env_uri_, fs_uri_, &env,
&env_guard_);
if (!s.ok()) {
fprintf(stderr, "%s\n", s.ToString().c_str());
exec_state_ = LDBCommandExecuteResult::Failed(s.ToString());
return;
}
options_.env = env;
}
if (db_ == nullptr && !NoDBOpen()) {
OpenDB();
if (exec_state_.IsFailed() && try_load_options_) {
// We don't always return if there is a failure because a WAL file or
// manifest file can be given to "dump" command so we should continue.
// --try_load_options is not valid in those cases.
return;
}
}
// We'll intentionally proceed even if the DB can't be opened because users
// can also specify a filename, not just a directory.
DoCommand();
if (exec_state_.IsNotStarted()) {
exec_state_ = LDBCommandExecuteResult::Succeed("");
}
if (db_ != nullptr) {
CloseDB();
}
}
LDBCommand::LDBCommand(const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags, bool is_read_only,
const std::vector<std::string>& valid_cmd_line_options)
: db_(nullptr),
db_ttl_(nullptr),
is_read_only_(is_read_only),
is_key_hex_(false),
is_value_hex_(false),
is_db_ttl_(false),
timestamp_(false),
try_load_options_(false),
create_if_missing_(false),
option_map_(options),
flags_(flags),
valid_cmd_line_options_(valid_cmd_line_options) {
auto itr = options.find(ARG_DB);
if (itr != options.end()) {
db_path_ = itr->second;
}
itr = options.find(ARG_ENV_URI);
if (itr != options.end()) {
env_uri_ = itr->second;
}
itr = options.find(ARG_FS_URI);
if (itr != options.end()) {
fs_uri_ = itr->second;
}
itr = options.find(ARG_CF_NAME);
if (itr != options.end()) {
column_family_name_ = itr->second;
} else {
column_family_name_ = kDefaultColumnFamilyName;
}
itr = options.find(ARG_SECONDARY_PATH);
secondary_path_ = "";
if (itr != options.end()) {
secondary_path_ = itr->second;
}
is_key_hex_ = IsKeyHex(options, flags);
is_value_hex_ = IsValueHex(options, flags);
is_db_ttl_ = IsFlagPresent(flags, ARG_TTL);
timestamp_ = IsFlagPresent(flags, ARG_TIMESTAMP);
try_load_options_ = IsTryLoadOptions(options, flags);
force_consistency_checks_ =
!IsFlagPresent(flags, ARG_DISABLE_CONSISTENCY_CHECKS);
enable_blob_files_ = IsFlagPresent(flags, ARG_ENABLE_BLOB_FILES);
enable_blob_garbage_collection_ =
IsFlagPresent(flags, ARG_ENABLE_BLOB_GARBAGE_COLLECTION);
config_options_.ignore_unknown_options =
IsFlagPresent(flags, ARG_IGNORE_UNKNOWN_OPTIONS);
}
void LDBCommand::OpenDB() {
PrepareOptions();
if (!exec_state_.IsNotStarted()) {
return;
}
if (column_families_.empty() && !options_.merge_operator) {
// No harm to add a general merge operator if it is not specified.
options_.merge_operator = MergeOperators::CreateStringAppendOperator(':');
}
// Open the DB.
Status st;
std::vector<ColumnFamilyHandle*> handles_opened;
if (is_db_ttl_) {
// ldb doesn't yet support TTL DB with multiple column families
if (!column_family_name_.empty() || !column_families_.empty()) {
exec_state_ = LDBCommandExecuteResult::Failed(
"ldb doesn't support TTL DB with multiple column families");
}
if (!secondary_path_.empty()) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Open as secondary is not supported for TTL DB yet.");
}
if (is_read_only_) {
st = DBWithTTL::Open(options_, db_path_, &db_ttl_, 0, true);
} else {
st = DBWithTTL::Open(options_, db_path_, &db_ttl_);
}
db_ = db_ttl_;
} else {
if (is_read_only_ && secondary_path_.empty()) {
if (column_families_.empty()) {
st = DB::OpenForReadOnly(options_, db_path_, &db_);
} else {
st = DB::OpenForReadOnly(options_, db_path_, column_families_,
&handles_opened, &db_);
}
} else {
if (column_families_.empty()) {
if (secondary_path_.empty()) {
st = DB::Open(options_, db_path_, &db_);
} else {
st = DB::OpenAsSecondary(options_, db_path_, secondary_path_, &db_);
}
} else {
if (secondary_path_.empty()) {
st = DB::Open(options_, db_path_, column_families_, &handles_opened,
&db_);
} else {
st = DB::OpenAsSecondary(options_, db_path_, secondary_path_,
column_families_, &handles_opened, &db_);
}
}
}
}
if (!st.ok()) {
std::string msg = st.ToString();
exec_state_ = LDBCommandExecuteResult::Failed(msg);
} else if (!handles_opened.empty()) {
assert(handles_opened.size() == column_families_.size());
bool found_cf_name = false;
for (size_t i = 0; i < handles_opened.size(); i++) {
cf_handles_[column_families_[i].name] = handles_opened[i];
if (column_family_name_ == column_families_[i].name) {
found_cf_name = true;
}
}
if (!found_cf_name) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Non-existing column family " + column_family_name_);
CloseDB();
}
} else {
// We successfully opened DB in single column family mode.
assert(column_families_.empty());
if (column_family_name_ != kDefaultColumnFamilyName) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Non-existing column family " + column_family_name_);
CloseDB();
}
}
}
void LDBCommand::CloseDB() {
if (db_ != nullptr) {
for (auto& pair : cf_handles_) {
delete pair.second;
}
Status s = db_->Close();
s.PermitUncheckedError();
delete db_;
db_ = nullptr;
}
}
ColumnFamilyHandle* LDBCommand::GetCfHandle() {
if (!cf_handles_.empty()) {
auto it = cf_handles_.find(column_family_name_);
if (it == cf_handles_.end()) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Cannot find column family " + column_family_name_);
} else {
return it->second;
}
}
return db_->DefaultColumnFamily();
}
std::vector<std::string> LDBCommand::BuildCmdLineOptions(
std::vector<std::string> options) {
std::vector<std::string> ret = {ARG_ENV_URI,
ARG_FS_URI,
ARG_DB,
ARG_SECONDARY_PATH,
ARG_BLOOM_BITS,
ARG_BLOCK_SIZE,
ARG_AUTO_COMPACTION,
ARG_COMPRESSION_TYPE,
ARG_COMPRESSION_MAX_DICT_BYTES,
ARG_WRITE_BUFFER_SIZE,
ARG_FILE_SIZE,
ARG_FIX_PREFIX_LEN,
ARG_TRY_LOAD_OPTIONS,
ARG_DISABLE_CONSISTENCY_CHECKS,
ARG_ENABLE_BLOB_FILES,
ARG_MIN_BLOB_SIZE,
ARG_BLOB_FILE_SIZE,
ARG_BLOB_COMPRESSION_TYPE,
ARG_ENABLE_BLOB_GARBAGE_COLLECTION,
ARG_BLOB_GARBAGE_COLLECTION_AGE_CUTOFF,
ARG_BLOB_GARBAGE_COLLECTION_FORCE_THRESHOLD,
ARG_BLOB_COMPACTION_READAHEAD_SIZE,
ARG_BLOB_FILE_STARTING_LEVEL,
ARG_PREPOPULATE_BLOB_CACHE,
ARG_IGNORE_UNKNOWN_OPTIONS,
ARG_CF_NAME};
ret.insert(ret.end(), options.begin(), options.end());
return ret;
}
/**
* Parses the specific double option and fills in the value.
* Returns true if the option is found.
* Returns false if the option is not found or if there is an error parsing the
* value. If there is an error, the specified exec_state is also
* updated.
*/
bool LDBCommand::ParseDoubleOption(
const std::map<std::string, std::string>& /*options*/,
const std::string& option, double& value,
LDBCommandExecuteResult& exec_state) {
auto itr = option_map_.find(option);
if (itr != option_map_.end()) {
#if defined(CYGWIN)
char* str_end = nullptr;
value = std::strtod(itr->second.c_str(), &str_end);
if (str_end == itr->second.c_str()) {
exec_state =
LDBCommandExecuteResult::Failed(option + " has an invalid value.");
} else if (errno == ERANGE) {
exec_state = LDBCommandExecuteResult::Failed(
option + " has a value out-of-range.");
} else {
return true;
}
#else
try {
value = std::stod(itr->second);
return true;
} catch (const std::invalid_argument&) {
exec_state =
LDBCommandExecuteResult::Failed(option + " has an invalid value.");
} catch (const std::out_of_range&) {
exec_state = LDBCommandExecuteResult::Failed(
option + " has a value out-of-range.");
}
#endif
}
return false;
}
/**
* Parses the specific integer option and fills in the value.
* Returns true if the option is found.
* Returns false if the option is not found or if there is an error parsing the
* value. If there is an error, the specified exec_state is also
* updated.
*/
bool LDBCommand::ParseIntOption(
const std::map<std::string, std::string>& /*options*/,
const std::string& option, int& value,
LDBCommandExecuteResult& exec_state) {
auto itr = option_map_.find(option);
if (itr != option_map_.end()) {
#if defined(CYGWIN)
char* str_end = nullptr;
value = strtol(itr->second.c_str(), &str_end, 10);
if (str_end == itr->second.c_str()) {
exec_state =
LDBCommandExecuteResult::Failed(option + " has an invalid value.");
} else if (errno == ERANGE) {
exec_state = LDBCommandExecuteResult::Failed(
option + " has a value out-of-range.");
} else {
return true;
}
#else
try {
value = std::stoi(itr->second);
return true;
} catch (const std::invalid_argument&) {
exec_state =
LDBCommandExecuteResult::Failed(option + " has an invalid value.");
} catch (const std::out_of_range&) {
exec_state = LDBCommandExecuteResult::Failed(
option + " has a value out-of-range.");
}
#endif
}
return false;
}
/**
* Parses the specified option and fills in the value.
* Returns true if the option is found.
* Returns false otherwise.
*/
bool LDBCommand::ParseStringOption(
const std::map<std::string, std::string>& /*options*/,
const std::string& option, std::string* value) {
auto itr = option_map_.find(option);
if (itr != option_map_.end()) {
*value = itr->second;
return true;
}
return false;
}
/**
* Parses the specified compression type and fills in the value.
* Returns true if the compression type is found.
* Returns false otherwise.
*/
bool LDBCommand::ParseCompressionTypeOption(
const std::map<std::string, std::string>& /*options*/,
const std::string& option, CompressionType& value,
LDBCommandExecuteResult& exec_state) {
auto itr = option_map_.find(option);
if (itr != option_map_.end()) {
const std::string& comp = itr->second;
if (comp == "no") {
value = kNoCompression;
return true;
} else if (comp == "snappy") {
value = kSnappyCompression;
return true;
} else if (comp == "zlib") {
value = kZlibCompression;
return true;
} else if (comp == "bzip2") {
value = kBZip2Compression;
return true;
} else if (comp == "lz4") {
value = kLZ4Compression;
return true;
} else if (comp == "lz4hc") {
value = kLZ4HCCompression;
return true;
} else if (comp == "xpress") {
value = kXpressCompression;
return true;
} else if (comp == "zstd") {
value = kZSTD;
return true;
} else {
// Unknown compression.
exec_state = LDBCommandExecuteResult::Failed(
"Unknown compression algorithm: " + comp);
}
}
return false;
}
void LDBCommand::OverrideBaseOptions() {
options_.create_if_missing = false;
int db_write_buffer_size;
if (ParseIntOption(option_map_, ARG_DB_WRITE_BUFFER_SIZE,
db_write_buffer_size, exec_state_)) {
if (db_write_buffer_size >= 0) {
options_.db_write_buffer_size = db_write_buffer_size;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(ARG_DB_WRITE_BUFFER_SIZE +
" must be >= 0.");
}
}
if (options_.db_paths.size() == 0) {
options_.db_paths.emplace_back(db_path_,
std::numeric_limits<uint64_t>::max());
}
OverrideBaseCFOptions(static_cast<ColumnFamilyOptions*>(&options_));
}
void LDBCommand::OverrideBaseCFOptions(ColumnFamilyOptions* cf_opts) {
BlockBasedTableOptions table_options;
bool use_table_options = false;
int bits;
if (ParseIntOption(option_map_, ARG_BLOOM_BITS, bits, exec_state_)) {
if (bits > 0) {
use_table_options = true;
table_options.filter_policy.reset(NewBloomFilterPolicy(bits));
} else {
exec_state_ =
LDBCommandExecuteResult::Failed(ARG_BLOOM_BITS + " must be > 0.");
}
}
int block_size;
if (ParseIntOption(option_map_, ARG_BLOCK_SIZE, block_size, exec_state_)) {
if (block_size > 0) {
use_table_options = true;
table_options.block_size = block_size;
} else {
exec_state_ =
LDBCommandExecuteResult::Failed(ARG_BLOCK_SIZE + " must be > 0.");
}
}
cf_opts->force_consistency_checks = force_consistency_checks_;
if (use_table_options) {
cf_opts->table_factory.reset(NewBlockBasedTableFactory(table_options));
}
cf_opts->enable_blob_files = enable_blob_files_;
int min_blob_size;
if (ParseIntOption(option_map_, ARG_MIN_BLOB_SIZE, min_blob_size,
exec_state_)) {
if (min_blob_size >= 0) {
cf_opts->min_blob_size = min_blob_size;
} else {
exec_state_ =
LDBCommandExecuteResult::Failed(ARG_MIN_BLOB_SIZE + " must be >= 0.");
}
}
int blob_file_size;
if (ParseIntOption(option_map_, ARG_BLOB_FILE_SIZE, blob_file_size,
exec_state_)) {
if (blob_file_size > 0) {
cf_opts->blob_file_size = blob_file_size;
} else {
exec_state_ =
LDBCommandExecuteResult::Failed(ARG_BLOB_FILE_SIZE + " must be > 0.");
}
}
cf_opts->enable_blob_garbage_collection = enable_blob_garbage_collection_;
double blob_garbage_collection_age_cutoff;
if (ParseDoubleOption(option_map_, ARG_BLOB_GARBAGE_COLLECTION_AGE_CUTOFF,
blob_garbage_collection_age_cutoff, exec_state_)) {
if (blob_garbage_collection_age_cutoff >= 0 &&
blob_garbage_collection_age_cutoff <= 1) {
cf_opts->blob_garbage_collection_age_cutoff =
blob_garbage_collection_age_cutoff;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_BLOB_GARBAGE_COLLECTION_AGE_CUTOFF + " must be >= 0 and <= 1.");
}
}
double blob_garbage_collection_force_threshold;
if (ParseDoubleOption(option_map_,
ARG_BLOB_GARBAGE_COLLECTION_FORCE_THRESHOLD,
blob_garbage_collection_force_threshold, exec_state_)) {
if (blob_garbage_collection_force_threshold >= 0 &&
blob_garbage_collection_force_threshold <= 1) {
cf_opts->blob_garbage_collection_force_threshold =
blob_garbage_collection_force_threshold;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_BLOB_GARBAGE_COLLECTION_FORCE_THRESHOLD +
" must be >= 0 and <= 1.");
}
}
int blob_compaction_readahead_size;
if (ParseIntOption(option_map_, ARG_BLOB_COMPACTION_READAHEAD_SIZE,
blob_compaction_readahead_size, exec_state_)) {
if (blob_compaction_readahead_size > 0) {
cf_opts->blob_compaction_readahead_size = blob_compaction_readahead_size;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_BLOB_COMPACTION_READAHEAD_SIZE + " must be > 0.");
}
}
int blob_file_starting_level;
if (ParseIntOption(option_map_, ARG_BLOB_FILE_STARTING_LEVEL,
blob_file_starting_level, exec_state_)) {
if (blob_file_starting_level >= 0) {
cf_opts->blob_file_starting_level = blob_file_starting_level;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_BLOB_FILE_STARTING_LEVEL + " must be >= 0.");
}
}
int prepopulate_blob_cache;
if (ParseIntOption(option_map_, ARG_PREPOPULATE_BLOB_CACHE,
prepopulate_blob_cache, exec_state_)) {
switch (prepopulate_blob_cache) {
case 0:
cf_opts->prepopulate_blob_cache = PrepopulateBlobCache::kDisable;
break;
case 1:
cf_opts->prepopulate_blob_cache = PrepopulateBlobCache::kFlushOnly;
break;
default:
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_PREPOPULATE_BLOB_CACHE +
" must be 0 (disable) or 1 (flush only).");
}
}
auto itr = option_map_.find(ARG_AUTO_COMPACTION);
if (itr != option_map_.end()) {
cf_opts->disable_auto_compactions = !StringToBool(itr->second);
}
CompressionType compression_type;
if (ParseCompressionTypeOption(option_map_, ARG_COMPRESSION_TYPE,
compression_type, exec_state_)) {
cf_opts->compression = compression_type;
}
CompressionType blob_compression_type;
if (ParseCompressionTypeOption(option_map_, ARG_BLOB_COMPRESSION_TYPE,
blob_compression_type, exec_state_)) {
cf_opts->blob_compression_type = blob_compression_type;
}
int compression_max_dict_bytes;
if (ParseIntOption(option_map_, ARG_COMPRESSION_MAX_DICT_BYTES,
compression_max_dict_bytes, exec_state_)) {
if (compression_max_dict_bytes >= 0) {
cf_opts->compression_opts.max_dict_bytes = compression_max_dict_bytes;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_COMPRESSION_MAX_DICT_BYTES + " must be >= 0.");
}
}
int write_buffer_size;
if (ParseIntOption(option_map_, ARG_WRITE_BUFFER_SIZE, write_buffer_size,
exec_state_)) {
if (write_buffer_size > 0) {
cf_opts->write_buffer_size = write_buffer_size;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(ARG_WRITE_BUFFER_SIZE +
" must be > 0.");
}
}
int file_size;
if (ParseIntOption(option_map_, ARG_FILE_SIZE, file_size, exec_state_)) {
if (file_size > 0) {
cf_opts->target_file_size_base = file_size;
} else {
exec_state_ =
LDBCommandExecuteResult::Failed(ARG_FILE_SIZE + " must be > 0.");
}
}
int fix_prefix_len;
if (ParseIntOption(option_map_, ARG_FIX_PREFIX_LEN, fix_prefix_len,
exec_state_)) {
if (fix_prefix_len > 0) {
cf_opts->prefix_extractor.reset(
NewFixedPrefixTransform(static_cast<size_t>(fix_prefix_len)));
} else {
exec_state_ =
LDBCommandExecuteResult::Failed(ARG_FIX_PREFIX_LEN + " must be > 0.");
}
}
}
// First, initializes the options state using the OPTIONS file when enabled.
// Second, overrides the options according to the CLI arguments and the
// specific subcommand being run.
void LDBCommand::PrepareOptions() {
if (!create_if_missing_ && try_load_options_) {
config_options_.env = options_.env;
Status s = LoadLatestOptions(config_options_, db_path_, &options_,
&column_families_);
if (!s.ok() && !s.IsNotFound()) {
// Option file exists but load option file error.
std::string msg = s.ToString();
exec_state_ = LDBCommandExecuteResult::Failed(msg);
db_ = nullptr;
return;
}
if (!options_.wal_dir.empty()) {
if (options_.env->FileExists(options_.wal_dir).IsNotFound()) {
options_.wal_dir = db_path_;
fprintf(
stderr,
"wal_dir loaded from the option file doesn't exist. Ignore it.\n");
}
}
// If merge operator is not set, set a string append operator.
for (auto& cf_entry : column_families_) {
if (!cf_entry.options.merge_operator) {
cf_entry.options.merge_operator =
MergeOperators::CreateStringAppendOperator(':');
}
}
}
if (options_.env == Env::Default()) {
options_.env = config_options_.env;
}
OverrideBaseOptions();
if (exec_state_.IsFailed()) {
return;
}
if (column_families_.empty()) {
// Reads the MANIFEST to figure out what column families exist. In this
// case, the option overrides from the CLI argument/specific subcommand
// apply to all column families.
std::vector<std::string> cf_list;
Status st = DB::ListColumnFamilies(options_, db_path_, &cf_list);
// It is possible the DB doesn't exist yet, for "create if not
// existing" case. The failure is ignored here. We rely on DB::Open()
// to give us the correct error message for problem with opening
// existing DB.
if (st.ok() && cf_list.size() > 1) {
// Ignore single column family DB.
for (auto cf_name : cf_list) {
column_families_.emplace_back(cf_name, options_);
}
}
} else {
// We got column families from the OPTIONS file. In this case, the option
// overrides from the CLI argument/specific subcommand only apply to the
// column family specified by `--column_family_name`.
auto column_families_iter =
std::find_if(column_families_.begin(), column_families_.end(),
[this](const ColumnFamilyDescriptor& cf_desc) {
return cf_desc.name == column_family_name_;
});
if (column_families_iter == column_families_.end()) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Non-existing column family " + column_family_name_);
return;
}
OverrideBaseCFOptions(&column_families_iter->options);
}
}
bool LDBCommand::ParseKeyValue(const std::string& line, std::string* key,
std::string* value, bool is_key_hex,
bool is_value_hex) {
size_t pos = line.find(DELIM);
if (pos != std::string::npos) {
*key = line.substr(0, pos);
*value = line.substr(pos + strlen(DELIM));
if (is_key_hex) {