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rocksdb/tools/ldb_cmd.cc

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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 ROCKSDB_LITE
#include "rocksdb/utilities/ldb_cmd.h"
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif
#include <inttypes.h>
#include "db/db_impl.h"
#include "db/dbformat.h"
#include "db/filename.h"
#include "db/log_reader.h"
#include "db/write_batch_internal.h"
#include "db/writebuffer.h"
#include "port/dirent.h"
#include "rocksdb/cache.h"
#include "rocksdb/table_properties.h"
#include "rocksdb/write_batch.h"
#include "table/scoped_arena_iterator.h"
#include "tools/ldb_cmd_impl.h"
#include "tools/sst_dump_tool_imp.h"
#include "util/coding.h"
#include "util/stderr_logger.h"
#include "util/string_util.h"
#include "utilities/ttl/db_ttl_impl.h"
#include <cstdlib>
#include <ctime>
#include <iostream>
#include <limits>
#include <sstream>
#include <stdexcept>
#include <string>
namespace rocksdb {
using namespace std;
const string LDBCommand::ARG_DB = "db";
const string LDBCommand::ARG_PATH = "path";
const string LDBCommand::ARG_HEX = "hex";
const string LDBCommand::ARG_KEY_HEX = "key_hex";
const string LDBCommand::ARG_VALUE_HEX = "value_hex";
const string LDBCommand::ARG_CF_NAME = "column_family";
const string LDBCommand::ARG_TTL = "ttl";
const string LDBCommand::ARG_TTL_START = "start_time";
const string LDBCommand::ARG_TTL_END = "end_time";
const string LDBCommand::ARG_TIMESTAMP = "timestamp";
const string LDBCommand::ARG_FROM = "from";
const string LDBCommand::ARG_TO = "to";
const string LDBCommand::ARG_MAX_KEYS = "max_keys";
const string LDBCommand::ARG_BLOOM_BITS = "bloom_bits";
const string LDBCommand::ARG_FIX_PREFIX_LEN = "fix_prefix_len";
const string LDBCommand::ARG_COMPRESSION_TYPE = "compression_type";
const string LDBCommand::ARG_BLOCK_SIZE = "block_size";
const string LDBCommand::ARG_AUTO_COMPACTION = "auto_compaction";
const string LDBCommand::ARG_DB_WRITE_BUFFER_SIZE = "db_write_buffer_size";
const string LDBCommand::ARG_WRITE_BUFFER_SIZE = "write_buffer_size";
const string LDBCommand::ARG_FILE_SIZE = "file_size";
const string LDBCommand::ARG_CREATE_IF_MISSING = "create_if_missing";
const string LDBCommand::ARG_NO_VALUE = "no_value";
const char* LDBCommand::DELIM = " ==> ";
namespace {
void DumpWalFile(std::string wal_file, bool print_header, bool print_values,
LDBCommandExecuteResult* exec_state);
void DumpSstFile(std::string filename, bool output_hex, bool show_properties);
};
LDBCommand* LDBCommand::InitFromCmdLineArgs(
int argc, char** argv, const Options& options,
const LDBOptions& ldb_options,
const std::vector<ColumnFamilyDescriptor>* column_families) {
vector<string> args;
for (int i = 1; i < argc; i++) {
args.push_back(argv[i]);
}
return InitFromCmdLineArgs(args, options, ldb_options, column_families);
}
/**
* 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 vector<string>& args, const Options& options,
const LDBOptions& ldb_options,
const std::vector<ColumnFamilyDescriptor>* column_families) {
// --x=y command line arguments are added as x->y map entries.
map<string, string> option_map;
// Command-line arguments of the form --hex end up in this array as hex
vector<string> flags;
// Everything other than option_map and flags. Represents commands
// and their parameters. For eg: put key1 value1 go into this vector.
vector<string> cmdTokens;
const string OPTION_PREFIX = "--";
for (const auto& arg : args) {
if (arg[0] == '-' && arg[1] == '-'){
vector<string> splits = StringSplit(arg, '=');
if (splits.size() == 2) {
string optionKey = splits[0].substr(OPTION_PREFIX.size());
option_map[optionKey] = splits[1];
} else {
string optionKey = splits[0].substr(OPTION_PREFIX.size());
flags.push_back(optionKey);
}
} else {
cmdTokens.push_back(arg);
}
}
if (cmdTokens.size() < 1) {
fprintf(stderr, "Command not specified!");
return nullptr;
}
string cmd = cmdTokens[0];
vector<string> cmdParams(cmdTokens.begin()+1, cmdTokens.end());
LDBCommand* command = LDBCommand::SelectCommand(
cmd,
cmdParams,
option_map,
flags
);
if (command) {
command->SetDBOptions(options);
command->SetLDBOptions(ldb_options);
}
return command;
}
LDBCommand* LDBCommand::SelectCommand(
const std::string& cmd,
const vector<string>& cmdParams,
const map<string, string>& option_map,
const vector<string>& flags
) {
if (cmd == GetCommand::Name()) {
return new GetCommand(cmdParams, option_map, flags);
} else if (cmd == PutCommand::Name()) {
return new PutCommand(cmdParams, option_map, flags);
} else if (cmd == BatchPutCommand::Name()) {
return new BatchPutCommand(cmdParams, option_map, flags);
} else if (cmd == ScanCommand::Name()) {
return new ScanCommand(cmdParams, option_map, flags);
} else if (cmd == DeleteCommand::Name()) {
return new DeleteCommand(cmdParams, option_map, flags);
} else if (cmd == ApproxSizeCommand::Name()) {
return new ApproxSizeCommand(cmdParams, option_map, flags);
} else if (cmd == DBQuerierCommand::Name()) {
return new DBQuerierCommand(cmdParams, option_map, flags);
} else if (cmd == CompactorCommand::Name()) {
return new CompactorCommand(cmdParams, option_map, flags);
} else if (cmd == WALDumperCommand::Name()) {
return new WALDumperCommand(cmdParams, option_map, flags);
} else if (cmd == ReduceDBLevelsCommand::Name()) {
return new ReduceDBLevelsCommand(cmdParams, option_map, flags);
} else if (cmd == ChangeCompactionStyleCommand::Name()) {
return new ChangeCompactionStyleCommand(cmdParams, option_map, flags);
} else if (cmd == DBDumperCommand::Name()) {
return new DBDumperCommand(cmdParams, option_map, flags);
} else if (cmd == DBLoaderCommand::Name()) {
return new DBLoaderCommand(cmdParams, option_map, flags);
} else if (cmd == ManifestDumpCommand::Name()) {
return new ManifestDumpCommand(cmdParams, option_map, flags);
} else if (cmd == ListColumnFamiliesCommand::Name()) {
return new ListColumnFamiliesCommand(cmdParams, option_map, flags);
} else if (cmd == CreateColumnFamilyCommand::Name()) {
return new CreateColumnFamilyCommand(cmdParams, option_map, flags);
} else if (cmd == DBFileDumperCommand::Name()) {
return new DBFileDumperCommand(cmdParams, option_map, flags);
} else if (cmd == InternalDumpCommand::Name()) {
return new InternalDumpCommand(cmdParams, option_map, flags);
} else if (cmd == CheckConsistencyCommand::Name()) {
return new CheckConsistencyCommand(cmdParams, option_map, flags);
} else if (cmd == RepairCommand::Name()) {
return new RepairCommand(cmdParams, option_map, flags);
}
return nullptr;
}
/* Run the command, and return the execute result. */
void LDBCommand::Run() {
if (!exec_state_.IsNotStarted()) {
return;
}
if (db_ == nullptr && !NoDBOpen()) {
OpenDB();
}
// 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 map<string, string>& options,
const vector<string>& flags, bool is_read_only,
const vector<string>& valid_cmd_line_options)
: db_(nullptr),
is_read_only_(is_read_only),
is_key_hex_(false),
is_value_hex_(false),
is_db_ttl_(false),
timestamp_(false),
option_map_(options),
flags_(flags),
valid_cmd_line_options_(valid_cmd_line_options) {
map<string, string>::const_iterator itr = options.find(ARG_DB);
if (itr != options.end()) {
db_path_ = itr->second;
}
itr = options.find(ARG_CF_NAME);
if (itr != options.end()) {
column_family_name_ = itr->second;
} else {
column_family_name_ = kDefaultColumnFamilyName;
}
is_key_hex_ = IsKeyHex(options, flags);
is_value_hex_ = IsValueHex(options, flags);
is_db_ttl_ = IsFlagPresent(flags, ARG_TTL);
timestamp_ = IsFlagPresent(flags, ARG_TIMESTAMP);
}
void LDBCommand::OpenDB() {
Options opt = PrepareOptionsForOpenDB();
if (!exec_state_.IsNotStarted()) {
return;
}
// 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 (is_read_only_) {
st = DBWithTTL::Open(opt, db_path_, &db_ttl_, 0, true);
} else {
st = DBWithTTL::Open(opt, db_path_, &db_ttl_);
}
db_ = db_ttl_;
} else {
if (column_families_.empty()) {
// Try to figure out column family lists
std::vector<std::string> cf_list;
st = DB::ListColumnFamilies(DBOptions(), db_path_, &cf_list);
// There 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, opt);
}
}
}
if (is_read_only_) {
if (column_families_.empty()) {
st = DB::OpenForReadOnly(opt, db_path_, &db_);
} else {
st = DB::OpenForReadOnly(opt, db_path_, column_families_,
&handles_opened, &db_);
}
} else {
if (column_families_.empty()) {
st = DB::Open(opt, db_path_, &db_);
} else {
st = DB::Open(opt, db_path_, column_families_, &handles_opened, &db_);
}
}
}
if (!st.ok()) {
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();
}
}
options_ = opt;
}
void LDBCommand::CloseDB() {
if (db_ != nullptr) {
for (auto& pair : cf_handles_) {
delete pair.second;
}
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();
}
vector<string> LDBCommand::BuildCmdLineOptions(vector<string> options) {
vector<string> ret = {ARG_DB,
ARG_BLOOM_BITS,
ARG_BLOCK_SIZE,
ARG_AUTO_COMPACTION,
ARG_COMPRESSION_TYPE,
ARG_WRITE_BUFFER_SIZE,
ARG_FILE_SIZE,
ARG_FIX_PREFIX_LEN,
ARG_CF_NAME};
ret.insert(ret.end(), options.begin(), options.end());
return ret;
}
/**
* 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 map<string, string>& options,
const string& option, int& value,
LDBCommandExecuteResult& exec_state) {
map<string, string>::const_iterator itr = option_map_.find(option);
if (itr != option_map_.end()) {
try {
#if defined(CYGWIN)
value = strtol(itr->second.c_str(), 0, 10);
#else
value = stoi(itr->second);
#endif
return true;
} catch(const invalid_argument&) {
exec_state =
LDBCommandExecuteResult::Failed(option + " has an invalid value.");
} catch(const out_of_range&) {
exec_state = LDBCommandExecuteResult::Failed(
option + " has a value out-of-range.");
}
}
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 map<string, string>& options,
const string& option, string* value) {
auto itr = option_map_.find(option);
if (itr != option_map_.end()) {
*value = itr->second;
return true;
}
return false;
}
Options LDBCommand::PrepareOptionsForOpenDB() {
Options opt = options_;
opt.create_if_missing = false;
map<string, string>::const_iterator itr;
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.");
}
}
if (use_table_options) {
opt.table_factory.reset(NewBlockBasedTableFactory(table_options));
}
itr = option_map_.find(ARG_AUTO_COMPACTION);
if (itr != option_map_.end()) {
opt.disable_auto_compactions = ! StringToBool(itr->second);
}
itr = option_map_.find(ARG_COMPRESSION_TYPE);
if (itr != option_map_.end()) {
string comp = itr->second;
if (comp == "no") {
opt.compression = kNoCompression;
} else if (comp == "snappy") {
opt.compression = kSnappyCompression;
} else if (comp == "zlib") {
opt.compression = kZlibCompression;
} else if (comp == "bzip2") {
opt.compression = kBZip2Compression;
} else if (comp == "lz4") {
opt.compression = kLZ4Compression;
} else if (comp == "lz4hc") {
opt.compression = kLZ4HCCompression;
} else if (comp == "xpress") {
opt.compression = kXpressCompression;
} else if (comp == "zstd") {
opt.compression = kZSTDNotFinalCompression;
} else {
// Unknown compression.
exec_state_ =
LDBCommandExecuteResult::Failed("Unknown compression level: " + comp);
}
}
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) {
opt.db_write_buffer_size = db_write_buffer_size;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(ARG_DB_WRITE_BUFFER_SIZE +
" 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) {
opt.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) {
opt.target_file_size_base = file_size;
} else {
exec_state_ =
LDBCommandExecuteResult::Failed(ARG_FILE_SIZE + " must be > 0.");
}
}
if (opt.db_paths.size() == 0) {
opt.db_paths.emplace_back(db_path_, std::numeric_limits<uint64_t>::max());
}
int fix_prefix_len;
if (ParseIntOption(option_map_, ARG_FIX_PREFIX_LEN, fix_prefix_len,
exec_state_)) {
if (fix_prefix_len > 0) {
opt.prefix_extractor.reset(
NewFixedPrefixTransform(static_cast<size_t>(fix_prefix_len)));
} else {
exec_state_ =
LDBCommandExecuteResult::Failed(ARG_FIX_PREFIX_LEN + " must be > 0.");
}
}
return opt;
}
bool LDBCommand::ParseKeyValue(const string& line, string* key, string* value,
bool is_key_hex, bool is_value_hex) {
size_t pos = line.find(DELIM);
if (pos != string::npos) {
*key = line.substr(0, pos);
*value = line.substr(pos + strlen(DELIM));
if (is_key_hex) {
*key = HexToString(*key);
}
if (is_value_hex) {
*value = HexToString(*value);
}
return true;
} else {
return false;
}
}
/**
* Make sure that ONLY the command-line options and flags expected by this
* command are specified on the command-line. Extraneous options are usually
* the result of user error.
* Returns true if all checks pass. Else returns false, and prints an
* appropriate error msg to stderr.
*/
bool LDBCommand::ValidateCmdLineOptions() {
for (map<string, string>::const_iterator itr = option_map_.begin();
itr != option_map_.end(); ++itr) {
if (find(valid_cmd_line_options_.begin(),
valid_cmd_line_options_.end(), itr->first) ==
valid_cmd_line_options_.end()) {
fprintf(stderr, "Invalid command-line option %s\n", itr->first.c_str());
return false;
}
}
for (vector<string>::const_iterator itr = flags_.begin();
itr != flags_.end(); ++itr) {
if (find(valid_cmd_line_options_.begin(),
valid_cmd_line_options_.end(), *itr) ==
valid_cmd_line_options_.end()) {
fprintf(stderr, "Invalid command-line flag %s\n", itr->c_str());
return false;
}
}
if (!NoDBOpen() && option_map_.find(ARG_DB) == option_map_.end() &&
option_map_.find(ARG_PATH) == option_map_.end()) {
fprintf(stderr, "Either %s or %s must be specified.\n", ARG_DB.c_str(),
ARG_PATH.c_str());
return false;
}
return true;
}
string LDBCommand::HexToString(const string& str) {
string result;
std::string::size_type len = str.length();
if (len < 2 || str[0] != '0' || str[1] != 'x') {
fprintf(stderr, "Invalid hex input %s. Must start with 0x\n", str.c_str());
throw "Invalid hex input";
}
if (!Slice(str.data() + 2, len - 2).DecodeHex(&result)) {
throw "Invalid hex input";
}
return result;
}
string LDBCommand::StringToHex(const string& str) {
string result("0x");
result.append(Slice(str).ToString(true));
return result;
}
string LDBCommand::PrintKeyValue(const string& key, const string& value,
bool is_key_hex, bool is_value_hex) {
string result;
result.append(is_key_hex ? StringToHex(key) : key);
result.append(DELIM);
result.append(is_value_hex ? StringToHex(value) : value);
return result;
}
string LDBCommand::PrintKeyValue(const string& key, const string& value,
bool is_hex) {
return PrintKeyValue(key, value, is_hex, is_hex);
}
string LDBCommand::HelpRangeCmdArgs() {
std::ostringstream str_stream;
str_stream << " ";
str_stream << "[--" << ARG_FROM << "] ";
str_stream << "[--" << ARG_TO << "] ";
return str_stream.str();
}
bool LDBCommand::IsKeyHex(const map<string, string>& options,
const vector<string>& flags) {
return (IsFlagPresent(flags, ARG_HEX) || IsFlagPresent(flags, ARG_KEY_HEX) ||
ParseBooleanOption(options, ARG_HEX, false) ||
ParseBooleanOption(options, ARG_KEY_HEX, false));
}
bool LDBCommand::IsValueHex(const map<string, string>& options,
const vector<string>& flags) {
return (IsFlagPresent(flags, ARG_HEX) ||
IsFlagPresent(flags, ARG_VALUE_HEX) ||
ParseBooleanOption(options, ARG_HEX, false) ||
ParseBooleanOption(options, ARG_VALUE_HEX, false));
}
bool LDBCommand::ParseBooleanOption(const map<string, string>& options,
const string& option, bool default_val) {
map<string, string>::const_iterator itr = options.find(option);
if (itr != options.end()) {
string option_val = itr->second;
return StringToBool(itr->second);
}
return default_val;
}
bool LDBCommand::StringToBool(string val) {
std::transform(val.begin(), val.end(), val.begin(),
[](char ch) -> char { return (char)::tolower(ch); });
if (val == "true") {
return true;
} else if (val == "false") {
return false;
} else {
throw "Invalid value for boolean argument";
}
}
CompactorCommand::CompactorCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_FROM, ARG_TO, ARG_HEX, ARG_KEY_HEX,
ARG_VALUE_HEX, ARG_TTL})),
null_from_(true), null_to_(true) {
map<string, string>::const_iterator itr = options.find(ARG_FROM);
if (itr != options.end()) {
null_from_ = false;
from_ = itr->second;
}
itr = options.find(ARG_TO);
if (itr != options.end()) {
null_to_ = false;
to_ = itr->second;
}
if (is_key_hex_) {
if (!null_from_) {
from_ = HexToString(from_);
}
if (!null_to_) {
to_ = HexToString(to_);
}
}
}
void CompactorCommand::Help(string& ret) {
ret.append(" ");
ret.append(CompactorCommand::Name());
ret.append(HelpRangeCmdArgs());
ret.append("\n");
}
void CompactorCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
Slice* begin = nullptr;
Slice* end = nullptr;
if (!null_from_) {
begin = new Slice(from_);
}
if (!null_to_) {
end = new Slice(to_);
}
CompactRangeOptions cro;
cro.bottommost_level_compaction = BottommostLevelCompaction::kForce;
db_->CompactRange(cro, begin, end);
exec_state_ = LDBCommandExecuteResult::Succeed("");
delete begin;
delete end;
}
// ----------------------------------------------------------------------------
const string DBLoaderCommand::ARG_DISABLE_WAL = "disable_wal";
const string DBLoaderCommand::ARG_BULK_LOAD = "bulk_load";
const string DBLoaderCommand::ARG_COMPACT = "compact";
DBLoaderCommand::DBLoaderCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
ARG_FROM, ARG_TO, ARG_CREATE_IF_MISSING,
ARG_DISABLE_WAL, ARG_BULK_LOAD,
ARG_COMPACT})),
create_if_missing_(false), disable_wal_(false), bulk_load_(false),
compact_(false) {
create_if_missing_ = IsFlagPresent(flags, ARG_CREATE_IF_MISSING);
disable_wal_ = IsFlagPresent(flags, ARG_DISABLE_WAL);
bulk_load_ = IsFlagPresent(flags, ARG_BULK_LOAD);
compact_ = IsFlagPresent(flags, ARG_COMPACT);
}
void DBLoaderCommand::Help(string& ret) {
ret.append(" ");
ret.append(DBLoaderCommand::Name());
ret.append(" [--" + ARG_CREATE_IF_MISSING + "]");
ret.append(" [--" + ARG_DISABLE_WAL + "]");
ret.append(" [--" + ARG_BULK_LOAD + "]");
ret.append(" [--" + ARG_COMPACT + "]");
ret.append("\n");
}
Options DBLoaderCommand::PrepareOptionsForOpenDB() {
Options opt = LDBCommand::PrepareOptionsForOpenDB();
opt.create_if_missing = create_if_missing_;
if (bulk_load_) {
opt.PrepareForBulkLoad();
}
return opt;
}
void DBLoaderCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
WriteOptions write_options;
if (disable_wal_) {
write_options.disableWAL = true;
}
int bad_lines = 0;
string line;
while (getline(cin, line, '\n')) {
string key;
string value;
if (ParseKeyValue(line, &key, &value, is_key_hex_, is_value_hex_)) {
db_->Put(write_options, GetCfHandle(), Slice(key), Slice(value));
} else if (0 == line.find("Keys in range:")) {
// ignore this line
} else if (0 == line.find("Created bg thread 0x")) {
// ignore this line
} else {
bad_lines ++;
}
}
if (bad_lines > 0) {
cout << "Warning: " << bad_lines << " bad lines ignored." << endl;
}
if (compact_) {
db_->CompactRange(CompactRangeOptions(), GetCfHandle(), nullptr, nullptr);
}
}
// ----------------------------------------------------------------------------
namespace {
void DumpManifestFile(std::string file, bool verbose, bool hex, bool json) {
Options options;
EnvOptions sopt;
std::string dbname("dummy");
std::shared_ptr<Cache> tc(NewLRUCache(options.max_open_files - 10,
options.table_cache_numshardbits));
// Notice we are using the default options not through SanitizeOptions(),
// if VersionSet::DumpManifest() depends on any option done by
// SanitizeOptions(), we need to initialize it manually.
options.db_paths.emplace_back("dummy", 0);
options.num_levels = 64;
WriteController wc(options.delayed_write_rate);
WriteBuffer wb(options.db_write_buffer_size);
VersionSet versions(dbname, &options, sopt, tc.get(), &wb, &wc);
Status s = versions.DumpManifest(options, file, verbose, hex, json);
if (!s.ok()) {
printf("Error in processing file %s %s\n", file.c_str(),
s.ToString().c_str());
}
}
} // namespace
const string ManifestDumpCommand::ARG_VERBOSE = "verbose";
const string ManifestDumpCommand::ARG_JSON = "json";
const string ManifestDumpCommand::ARG_PATH = "path";
void ManifestDumpCommand::Help(string& ret) {
ret.append(" ");
ret.append(ManifestDumpCommand::Name());
ret.append(" [--" + ARG_VERBOSE + "]");
ret.append(" [--" + ARG_JSON + "]");
ret.append(" [--" + ARG_PATH + "=<path_to_manifest_file>]");
ret.append("\n");
}
ManifestDumpCommand::ManifestDumpCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_VERBOSE, ARG_PATH, ARG_HEX, ARG_JSON})),
verbose_(false),
json_(false),
path_("")
{
verbose_ = IsFlagPresent(flags, ARG_VERBOSE);
json_ = IsFlagPresent(flags, ARG_JSON);
map<string, string>::const_iterator itr = options.find(ARG_PATH);
if (itr != options.end()) {
path_ = itr->second;
if (path_.empty()) {
exec_state_ = LDBCommandExecuteResult::Failed("--path: missing pathname");
}
}
}
void ManifestDumpCommand::DoCommand() {
std::string manifestfile;
if (!path_.empty()) {
manifestfile = path_;
} else {
bool found = false;
// We need to find the manifest file by searching the directory
// containing the db for files of the form MANIFEST_[0-9]+
auto CloseDir = [](DIR* p) { closedir(p); };
std::unique_ptr<DIR, decltype(CloseDir)> d(opendir(db_path_.c_str()),
CloseDir);
if (d == nullptr) {
exec_state_ =
LDBCommandExecuteResult::Failed(db_path_ + " is not a directory");
return;
}
struct dirent* entry;
while ((entry = readdir(d.get())) != nullptr) {
unsigned int match;
uint64_t num;
if (sscanf(entry->d_name, "MANIFEST-%" PRIu64 "%n", &num, &match) &&
match == strlen(entry->d_name)) {
if (!found) {
manifestfile = db_path_ + "/" + std::string(entry->d_name);
found = true;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
"Multiple MANIFEST files found; use --path to select one");
return;
}
}
}
}
if (verbose_) {
printf("Processing Manifest file %s\n", manifestfile.c_str());
}
DumpManifestFile(manifestfile, verbose_, is_key_hex_, json_);
if (verbose_) {
printf("Processing Manifest file %s done\n", manifestfile.c_str());
}
}
// ----------------------------------------------------------------------------
void ListColumnFamiliesCommand::Help(string& ret) {
ret.append(" ");
ret.append(ListColumnFamiliesCommand::Name());
ret.append(" full_path_to_db_directory ");
ret.append("\n");
}
ListColumnFamiliesCommand::ListColumnFamiliesCommand(
const vector<string>& params, const map<string, string>& options,
const vector<string>& flags)
: LDBCommand(options, flags, false, {}) {
if (params.size() != 1) {
exec_state_ = LDBCommandExecuteResult::Failed(
"dbname must be specified for the list_column_families command");
} else {
dbname_ = params[0];
}
}
void ListColumnFamiliesCommand::DoCommand() {
vector<string> column_families;
Status s = DB::ListColumnFamilies(DBOptions(), dbname_, &column_families);
if (!s.ok()) {
printf("Error in processing db %s %s\n", dbname_.c_str(),
s.ToString().c_str());
} else {
printf("Column families in %s: \n{", dbname_.c_str());
bool first = true;
for (auto cf : column_families) {
if (!first) {
printf(", ");
}
first = false;
printf("%s", cf.c_str());
}
printf("}\n");
}
}
void CreateColumnFamilyCommand::Help(string& ret) {
ret.append(" ");
ret.append(CreateColumnFamilyCommand::Name());
ret.append(" --db=<db_path> <new_column_family_name>");
ret.append("\n");
}
CreateColumnFamilyCommand::CreateColumnFamilyCommand(
const vector<string>& params, const map<string, string>& options,
const vector<string>& flags)
: LDBCommand(options, flags, true, {ARG_DB}) {
if (params.size() != 1) {
exec_state_ = LDBCommandExecuteResult::Failed(
"new column family name must be specified");
} else {
new_cf_name_ = params[0];
}
}
void CreateColumnFamilyCommand::DoCommand() {
ColumnFamilyHandle* new_cf_handle;
Status st = db_->CreateColumnFamily(options_, new_cf_name_, &new_cf_handle);
if (st.ok()) {
fprintf(stdout, "OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
"Fail to create new column family: " + st.ToString());
}
delete new_cf_handle;
CloseDB();
}
// ----------------------------------------------------------------------------
namespace {
string ReadableTime(int unixtime) {
char time_buffer [80];
time_t rawtime = unixtime;
struct tm tInfo;
struct tm* timeinfo = localtime_r(&rawtime, &tInfo);
assert(timeinfo == &tInfo);
strftime(time_buffer, 80, "%c", timeinfo);
return string(time_buffer);
}
// This function only called when it's the sane case of >1 buckets in time-range
// Also called only when timekv falls between ttl_start and ttl_end provided
void IncBucketCounts(vector<uint64_t>& bucket_counts, int ttl_start,
int time_range, int bucket_size, int timekv, int num_buckets) {
assert(time_range > 0 && timekv >= ttl_start && bucket_size > 0 &&
timekv < (ttl_start + time_range) && num_buckets > 1);
int bucket = (timekv - ttl_start) / bucket_size;
bucket_counts[bucket]++;
}
void PrintBucketCounts(const vector<uint64_t>& bucket_counts, int ttl_start,
int ttl_end, int bucket_size, int num_buckets) {
int time_point = ttl_start;
for(int i = 0; i < num_buckets - 1; i++, time_point += bucket_size) {
fprintf(stdout, "Keys in range %s to %s : %lu\n",
ReadableTime(time_point).c_str(),
ReadableTime(time_point + bucket_size).c_str(),
(unsigned long)bucket_counts[i]);
}
fprintf(stdout, "Keys in range %s to %s : %lu\n",
ReadableTime(time_point).c_str(),
ReadableTime(ttl_end).c_str(),
(unsigned long)bucket_counts[num_buckets - 1]);
}
} // namespace
const string InternalDumpCommand::ARG_COUNT_ONLY = "count_only";
const string InternalDumpCommand::ARG_COUNT_DELIM = "count_delim";
const string InternalDumpCommand::ARG_STATS = "stats";
const string InternalDumpCommand::ARG_INPUT_KEY_HEX = "input_key_hex";
InternalDumpCommand::InternalDumpCommand(const vector<string>& params,
const map<string, string>& options,
const vector<string>& flags)
: LDBCommand(
options, flags, true,
BuildCmdLineOptions({ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX, ARG_FROM,
ARG_TO, ARG_MAX_KEYS, ARG_COUNT_ONLY,
ARG_COUNT_DELIM, ARG_STATS, ARG_INPUT_KEY_HEX})),
has_from_(false),
has_to_(false),
max_keys_(-1),
delim_("."),
count_only_(false),
count_delim_(false),
print_stats_(false),
is_input_key_hex_(false) {
has_from_ = ParseStringOption(options, ARG_FROM, &from_);
has_to_ = ParseStringOption(options, ARG_TO, &to_);
ParseIntOption(options, ARG_MAX_KEYS, max_keys_, exec_state_);
map<string, string>::const_iterator itr = options.find(ARG_COUNT_DELIM);
if (itr != options.end()) {
delim_ = itr->second;
count_delim_ = true;
// fprintf(stdout,"delim = %c\n",delim_[0]);
} else {
count_delim_ = IsFlagPresent(flags, ARG_COUNT_DELIM);
delim_=".";
}
print_stats_ = IsFlagPresent(flags, ARG_STATS);
count_only_ = IsFlagPresent(flags, ARG_COUNT_ONLY);
is_input_key_hex_ = IsFlagPresent(flags, ARG_INPUT_KEY_HEX);
if (is_input_key_hex_) {
if (has_from_) {
from_ = HexToString(from_);
}
if (has_to_) {
to_ = HexToString(to_);
}
}
}
void InternalDumpCommand::Help(string& ret) {
ret.append(" ");
ret.append(InternalDumpCommand::Name());
ret.append(HelpRangeCmdArgs());
ret.append(" [--" + ARG_INPUT_KEY_HEX + "]");
ret.append(" [--" + ARG_MAX_KEYS + "=<N>]");
ret.append(" [--" + ARG_COUNT_ONLY + "]");
ret.append(" [--" + ARG_COUNT_DELIM + "=<char>]");
ret.append(" [--" + ARG_STATS + "]");
ret.append("\n");
}
void InternalDumpCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
if (print_stats_) {
string stats;
if (db_->GetProperty(GetCfHandle(), "rocksdb.stats", &stats)) {
fprintf(stdout, "%s\n", stats.c_str());
}
}
// Cast as DBImpl to get internal iterator
DBImpl* idb = dynamic_cast<DBImpl*>(db_);
if (!idb) {
exec_state_ = LDBCommandExecuteResult::Failed("DB is not DBImpl");
return;
}
string rtype1,rtype2,row,val;
rtype2 = "";
uint64_t c=0;
uint64_t s1=0,s2=0;
// Setup internal key iterator
Arena arena;
ScopedArenaIterator iter(idb->NewInternalIterator(&arena));
Status st = iter->status();
if (!st.ok()) {
exec_state_ =
LDBCommandExecuteResult::Failed("Iterator error:" + st.ToString());
}
if (has_from_) {
InternalKey ikey;
ikey.SetMaxPossibleForUserKey(from_);
iter->Seek(ikey.Encode());
} else {
iter->SeekToFirst();
}
long long count = 0;
for (; iter->Valid(); iter->Next()) {
ParsedInternalKey ikey;
if (!ParseInternalKey(iter->key(), &ikey)) {
fprintf(stderr, "Internal Key [%s] parse error!\n",
iter->key().ToString(true /* in hex*/).data());
// TODO: add error counter
continue;
}
// If end marker was specified, we stop before it
if (has_to_ && options_.comparator->Compare(ikey.user_key, to_) >= 0) {
break;
}
++count;
int k;
if (count_delim_) {
rtype1 = "";
s1=0;
row = iter->key().ToString();
val = iter->value().ToString();
for(k=0;row[k]!='\x01' && row[k]!='\0';k++)
s1++;
for(k=0;val[k]!='\x01' && val[k]!='\0';k++)
s1++;
for(int j=0;row[j]!=delim_[0] && row[j]!='\0' && row[j]!='\x01';j++)
rtype1+=row[j];
if(rtype2.compare("") && rtype2.compare(rtype1)!=0) {
fprintf(stdout,"%s => count:%lld\tsize:%lld\n",rtype2.c_str(),
(long long)c,(long long)s2);
c=1;
s2=s1;
rtype2 = rtype1;
} else {
c++;
s2+=s1;
rtype2=rtype1;
}
}
if (!count_only_ && !count_delim_) {
string key = ikey.DebugString(is_key_hex_);
string value = iter->value().ToString(is_value_hex_);
std::cout << key << " => " << value << "\n";
}
// Terminate if maximum number of keys have been dumped
if (max_keys_ > 0 && count >= max_keys_) break;
}
if(count_delim_) {
fprintf(stdout,"%s => count:%lld\tsize:%lld\n", rtype2.c_str(),
(long long)c,(long long)s2);
} else
fprintf(stdout, "Internal keys in range: %lld\n", (long long) count);
}
const string DBDumperCommand::ARG_COUNT_ONLY = "count_only";
const string DBDumperCommand::ARG_COUNT_DELIM = "count_delim";
const string DBDumperCommand::ARG_STATS = "stats";
const string DBDumperCommand::ARG_TTL_BUCKET = "bucket";
DBDumperCommand::DBDumperCommand(const vector<string>& params,
const map<string, string>& options,
const vector<string>& flags)
: LDBCommand(options, flags, true,
BuildCmdLineOptions(
{ARG_TTL, ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX, ARG_FROM,
ARG_TO, ARG_MAX_KEYS, ARG_COUNT_ONLY, ARG_COUNT_DELIM,
ARG_STATS, ARG_TTL_START, ARG_TTL_END, ARG_TTL_BUCKET,
ARG_TIMESTAMP, ARG_PATH})),
null_from_(true),
null_to_(true),
max_keys_(-1),
count_only_(false),
count_delim_(false),
print_stats_(false) {
map<string, string>::const_iterator itr = options.find(ARG_FROM);
if (itr != options.end()) {
null_from_ = false;
from_ = itr->second;
}
itr = options.find(ARG_TO);
if (itr != options.end()) {
null_to_ = false;
to_ = itr->second;
}
itr = options.find(ARG_MAX_KEYS);
if (itr != options.end()) {
try {
#if defined(CYGWIN)
max_keys_ = strtol(itr->second.c_str(), 0, 10);
#else
max_keys_ = stoi(itr->second);
#endif
} catch(const invalid_argument&) {
exec_state_ = LDBCommandExecuteResult::Failed(ARG_MAX_KEYS +
" has an invalid value");
} catch(const out_of_range&) {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_MAX_KEYS + " has a value out-of-range");
}
}
itr = options.find(ARG_COUNT_DELIM);
if (itr != options.end()) {
delim_ = itr->second;
count_delim_ = true;
} else {
count_delim_ = IsFlagPresent(flags, ARG_COUNT_DELIM);
delim_=".";
}
print_stats_ = IsFlagPresent(flags, ARG_STATS);
count_only_ = IsFlagPresent(flags, ARG_COUNT_ONLY);
if (is_key_hex_) {
if (!null_from_) {
from_ = HexToString(from_);
}
if (!null_to_) {
to_ = HexToString(to_);
}
}
itr = options.find(ARG_PATH);
if (itr != options.end()) {
path_ = itr->second;
}
}
void DBDumperCommand::Help(string& ret) {
ret.append(" ");
ret.append(DBDumperCommand::Name());
ret.append(HelpRangeCmdArgs());
ret.append(" [--" + ARG_TTL + "]");
ret.append(" [--" + ARG_MAX_KEYS + "=<N>]");
ret.append(" [--" + ARG_TIMESTAMP + "]");
ret.append(" [--" + ARG_COUNT_ONLY + "]");
ret.append(" [--" + ARG_COUNT_DELIM + "=<char>]");
ret.append(" [--" + ARG_STATS + "]");
ret.append(" [--" + ARG_TTL_BUCKET + "=<N>]");
ret.append(" [--" + ARG_TTL_START + "=<N>:- is inclusive]");
ret.append(" [--" + ARG_TTL_END + "=<N>:- is exclusive]");
ret.append(" [--" + ARG_PATH + "=<path_to_a_file>]");
ret.append("\n");
}
/**
* Handles two separate cases:
*
* 1) --db is specified - just dump the database.
*
* 2) --path is specified - determine based on file extension what dumping
* function to call. Please note that we intentionally use the extension
* and avoid probing the file contents under the assumption that renaming
* the files is not a supported scenario.
*
*/
void DBDumperCommand::DoCommand() {
if (!db_) {
assert(!path_.empty());
string fileName = GetFileNameFromPath(path_);
uint64_t number;
FileType type;
exec_state_ = LDBCommandExecuteResult::Succeed("");
if (!ParseFileName(fileName, &number, &type)) {
exec_state_ =
LDBCommandExecuteResult::Failed("Can't parse file type: " + path_);
return;
}
switch (type) {
case kLogFile:
DumpWalFile(path_, /* print_header_ */ true, /* print_values_ */ true,
&exec_state_);
break;
case kTableFile:
DumpSstFile(path_, is_key_hex_, /* show_properties */ true);
break;
case kDescriptorFile:
DumpManifestFile(path_, /* verbose_ */ false, is_key_hex_,
/* json_ */ false);
break;
default:
exec_state_ = LDBCommandExecuteResult::Failed(
"File type not supported: " + path_);
break;
}
} else {
DoDumpCommand();
}
}
void DBDumperCommand::DoDumpCommand() {
assert(nullptr != db_);
assert(path_.empty());
// Parse command line args
uint64_t count = 0;
if (print_stats_) {
string stats;
if (db_->GetProperty("rocksdb.stats", &stats)) {
fprintf(stdout, "%s\n", stats.c_str());
}
}
// Setup key iterator
Iterator* iter = db_->NewIterator(ReadOptions(), GetCfHandle());
Status st = iter->status();
if (!st.ok()) {
exec_state_ =
LDBCommandExecuteResult::Failed("Iterator error." + st.ToString());
}
if (!null_from_) {
iter->Seek(from_);
} else {
iter->SeekToFirst();
}
int max_keys = max_keys_;
int ttl_start;
if (!ParseIntOption(option_map_, ARG_TTL_START, ttl_start, exec_state_)) {
ttl_start = DBWithTTLImpl::kMinTimestamp; // TTL introduction time
}
int ttl_end;
if (!ParseIntOption(option_map_, ARG_TTL_END, ttl_end, exec_state_)) {
ttl_end = DBWithTTLImpl::kMaxTimestamp; // Max time allowed by TTL feature
}
if (ttl_end < ttl_start) {
fprintf(stderr, "Error: End time can't be less than start time\n");
delete iter;
return;
}
int time_range = ttl_end - ttl_start;
int bucket_size;
if (!ParseIntOption(option_map_, ARG_TTL_BUCKET, bucket_size, exec_state_) ||
bucket_size <= 0) {
bucket_size = time_range; // Will have just 1 bucket by default
}
//cretaing variables for row count of each type
string rtype1,rtype2,row,val;
rtype2 = "";
uint64_t c=0;
uint64_t s1=0,s2=0;
// At this point, bucket_size=0 => time_range=0
int num_buckets = (bucket_size >= time_range)
? 1
: ((time_range + bucket_size - 1) / bucket_size);
vector<uint64_t> bucket_counts(num_buckets, 0);
if (is_db_ttl_ && !count_only_ && timestamp_ && !count_delim_) {
fprintf(stdout, "Dumping key-values from %s to %s\n",
ReadableTime(ttl_start).c_str(), ReadableTime(ttl_end).c_str());
}
for (; iter->Valid(); iter->Next()) {
int rawtime = 0;
// If end marker was specified, we stop before it
if (!null_to_ && (iter->key().ToString() >= to_))
break;
// Terminate if maximum number of keys have been dumped
if (max_keys == 0)
break;
if (is_db_ttl_) {
TtlIterator* it_ttl = dynamic_cast<TtlIterator*>(iter);
assert(it_ttl);
rawtime = it_ttl->timestamp();
if (rawtime < ttl_start || rawtime >= ttl_end) {
continue;
}
}
if (max_keys > 0) {
--max_keys;
}
if (is_db_ttl_ && num_buckets > 1) {
IncBucketCounts(bucket_counts, ttl_start, time_range, bucket_size,
rawtime, num_buckets);
}
++count;
if (count_delim_) {
rtype1 = "";
row = iter->key().ToString();
val = iter->value().ToString();
s1 = row.size()+val.size();
for(int j=0;row[j]!=delim_[0] && row[j]!='\0';j++)
rtype1+=row[j];
if(rtype2.compare("") && rtype2.compare(rtype1)!=0) {
fprintf(stdout,"%s => count:%lld\tsize:%lld\n",rtype2.c_str(),
(long long )c,(long long)s2);
c=1;
s2=s1;
rtype2 = rtype1;
} else {
c++;
s2+=s1;
rtype2=rtype1;
}
}
if (!count_only_ && !count_delim_) {
if (is_db_ttl_ && timestamp_) {
fprintf(stdout, "%s ", ReadableTime(rawtime).c_str());
}
string str = PrintKeyValue(iter->key().ToString(),
iter->value().ToString(), is_key_hex_,
is_value_hex_);
fprintf(stdout, "%s\n", str.c_str());
}
}
if (num_buckets > 1 && is_db_ttl_) {
PrintBucketCounts(bucket_counts, ttl_start, ttl_end, bucket_size,
num_buckets);
} else if(count_delim_) {
fprintf(stdout,"%s => count:%lld\tsize:%lld\n",rtype2.c_str(),
(long long )c,(long long)s2);
} else {
fprintf(stdout, "Keys in range: %lld\n", (long long) count);
}
// Clean up
delete iter;
}
const string ReduceDBLevelsCommand::ARG_NEW_LEVELS = "new_levels";
const string ReduceDBLevelsCommand::ARG_PRINT_OLD_LEVELS = "print_old_levels";
ReduceDBLevelsCommand::ReduceDBLevelsCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_NEW_LEVELS, ARG_PRINT_OLD_LEVELS})),
old_levels_(1 << 7),
new_levels_(-1),
print_old_levels_(false) {
ParseIntOption(option_map_, ARG_NEW_LEVELS, new_levels_, exec_state_);
print_old_levels_ = IsFlagPresent(flags, ARG_PRINT_OLD_LEVELS);
if(new_levels_ <= 0) {
exec_state_ = LDBCommandExecuteResult::Failed(
" Use --" + ARG_NEW_LEVELS + " to specify a new level number\n");
}
}
vector<string> ReduceDBLevelsCommand::PrepareArgs(const string& db_path,
int new_levels, bool print_old_level) {
vector<string> ret;
ret.push_back("reduce_levels");
ret.push_back("--" + ARG_DB + "=" + db_path);
ret.push_back("--" + ARG_NEW_LEVELS + "=" + rocksdb::ToString(new_levels));
if(print_old_level) {
ret.push_back("--" + ARG_PRINT_OLD_LEVELS);
}
return ret;
}
void ReduceDBLevelsCommand::Help(string& ret) {
ret.append(" ");
ret.append(ReduceDBLevelsCommand::Name());
ret.append(" --" + ARG_NEW_LEVELS + "=<New number of levels>");
ret.append(" [--" + ARG_PRINT_OLD_LEVELS + "]");
ret.append("\n");
}
Options ReduceDBLevelsCommand::PrepareOptionsForOpenDB() {
Options opt = LDBCommand::PrepareOptionsForOpenDB();
opt.num_levels = old_levels_;
opt.max_bytes_for_level_multiplier_additional.resize(opt.num_levels, 1);
// Disable size compaction
opt.max_bytes_for_level_base = 1ULL << 50;
opt.max_bytes_for_level_multiplier = 1;
return opt;
}
Status ReduceDBLevelsCommand::GetOldNumOfLevels(Options& opt,
int* levels) {
EnvOptions soptions;
std::shared_ptr<Cache> tc(
NewLRUCache(opt.max_open_files - 10, opt.table_cache_numshardbits));
const InternalKeyComparator cmp(opt.comparator);
WriteController wc(opt.delayed_write_rate);
WriteBuffer wb(opt.db_write_buffer_size);
VersionSet versions(db_path_, &opt, soptions, tc.get(), &wb, &wc);
std::vector<ColumnFamilyDescriptor> dummy;
ColumnFamilyDescriptor dummy_descriptor(kDefaultColumnFamilyName,
ColumnFamilyOptions(opt));
dummy.push_back(dummy_descriptor);
// We rely the VersionSet::Recover to tell us the internal data structures
// in the db. And the Recover() should never do any change
// (like LogAndApply) to the manifest file.
Status st = versions.Recover(dummy);
if (!st.ok()) {
return st;
}
int max = -1;
auto default_cfd = versions.GetColumnFamilySet()->GetDefault();
for (int i = 0; i < default_cfd->NumberLevels(); i++) {
if (default_cfd->current()->storage_info()->NumLevelFiles(i)) {
max = i;
}
}
*levels = max + 1;
return st;
}
void ReduceDBLevelsCommand::DoCommand() {
if (new_levels_ <= 1) {
exec_state_ =
LDBCommandExecuteResult::Failed("Invalid number of levels.\n");
return;
}
Status st;
Options opt = PrepareOptionsForOpenDB();
int old_level_num = -1;
st = GetOldNumOfLevels(opt, &old_level_num);
if (!st.ok()) {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
return;
}
if (print_old_levels_) {
fprintf(stdout, "The old number of levels in use is %d\n", old_level_num);
}
if (old_level_num <= new_levels_) {
return;
}
old_levels_ = old_level_num;
OpenDB();
if (!db_) {
return;
}
// Compact the whole DB to put all files to the highest level.
fprintf(stdout, "Compacting the db...\n");
db_->CompactRange(CompactRangeOptions(), GetCfHandle(), nullptr, nullptr);
CloseDB();
EnvOptions soptions;
st = VersionSet::ReduceNumberOfLevels(db_path_, &opt, soptions, new_levels_);
if (!st.ok()) {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
return;
}
}
const string ChangeCompactionStyleCommand::ARG_OLD_COMPACTION_STYLE =
"old_compaction_style";
const string ChangeCompactionStyleCommand::ARG_NEW_COMPACTION_STYLE =
"new_compaction_style";
ChangeCompactionStyleCommand::ChangeCompactionStyleCommand(
const vector<string>& params, const map<string, string>& options,
const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_OLD_COMPACTION_STYLE,
ARG_NEW_COMPACTION_STYLE})),
old_compaction_style_(-1),
new_compaction_style_(-1) {
ParseIntOption(option_map_, ARG_OLD_COMPACTION_STYLE, old_compaction_style_,
exec_state_);
if (old_compaction_style_ != kCompactionStyleLevel &&
old_compaction_style_ != kCompactionStyleUniversal) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Use --" + ARG_OLD_COMPACTION_STYLE + " to specify old compaction " +
"style. Check ldb help for proper compaction style value.\n");
return;
}
ParseIntOption(option_map_, ARG_NEW_COMPACTION_STYLE, new_compaction_style_,
exec_state_);
if (new_compaction_style_ != kCompactionStyleLevel &&
new_compaction_style_ != kCompactionStyleUniversal) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Use --" + ARG_NEW_COMPACTION_STYLE + " to specify new compaction " +
"style. Check ldb help for proper compaction style value.\n");
return;
}
if (new_compaction_style_ == old_compaction_style_) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Old compaction style is the same as new compaction style. "
"Nothing to do.\n");
return;
}
if (old_compaction_style_ == kCompactionStyleUniversal &&
new_compaction_style_ == kCompactionStyleLevel) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Convert from universal compaction to level compaction. "
"Nothing to do.\n");
return;
}
}
void ChangeCompactionStyleCommand::Help(string& ret) {
ret.append(" ");
ret.append(ChangeCompactionStyleCommand::Name());
ret.append(" --" + ARG_OLD_COMPACTION_STYLE + "=<Old compaction style: 0 " +
"for level compaction, 1 for universal compaction>");
ret.append(" --" + ARG_NEW_COMPACTION_STYLE + "=<New compaction style: 0 " +
"for level compaction, 1 for universal compaction>");
ret.append("\n");
}
Options ChangeCompactionStyleCommand::PrepareOptionsForOpenDB() {
Options opt = LDBCommand::PrepareOptionsForOpenDB();
if (old_compaction_style_ == kCompactionStyleLevel &&
new_compaction_style_ == kCompactionStyleUniversal) {
// In order to convert from level compaction to universal compaction, we
// need to compact all data into a single file and move it to level 0.
opt.disable_auto_compactions = true;
opt.target_file_size_base = INT_MAX;
opt.target_file_size_multiplier = 1;
opt.max_bytes_for_level_base = INT_MAX;
opt.max_bytes_for_level_multiplier = 1;
}
return opt;
}
void ChangeCompactionStyleCommand::DoCommand() {
// print db stats before we have made any change
std::string property;
std::string files_per_level;
for (int i = 0; i < db_->NumberLevels(GetCfHandle()); i++) {
db_->GetProperty(GetCfHandle(),
"rocksdb.num-files-at-level" + NumberToString(i),
&property);
// format print string
char buf[100];
snprintf(buf, sizeof(buf), "%s%s", (i ? "," : ""), property.c_str());
files_per_level += buf;
}
fprintf(stdout, "files per level before compaction: %s\n",
files_per_level.c_str());
// manual compact into a single file and move the file to level 0
CompactRangeOptions compact_options;
compact_options.change_level = true;
compact_options.target_level = 0;
db_->CompactRange(compact_options, GetCfHandle(), nullptr, nullptr);
// verify compaction result
files_per_level = "";
int num_files = 0;
for (int i = 0; i < db_->NumberLevels(); i++) {
db_->GetProperty(GetCfHandle(),
"rocksdb.num-files-at-level" + NumberToString(i),
&property);
// format print string
char buf[100];
snprintf(buf, sizeof(buf), "%s%s", (i ? "," : ""), property.c_str());
files_per_level += buf;
num_files = atoi(property.c_str());
// level 0 should have only 1 file
if (i == 0 && num_files != 1) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Number of db files at "
"level 0 after compaction is " +
ToString(num_files) + ", not 1.\n");
return;
}
// other levels should have no file
if (i > 0 && num_files != 0) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Number of db files at "
"level " +
ToString(i) + " after compaction is " + ToString(num_files) +
", not 0.\n");
return;
}
}
fprintf(stdout, "files per level after compaction: %s\n",
files_per_level.c_str());
}
// ----------------------------------------------------------------------------
namespace {
struct StdErrReporter : public log::Reader::Reporter {
virtual void Corruption(size_t bytes, const Status& s) override {
cerr << "Corruption detected in log file " << s.ToString() << "\n";
}
};
class InMemoryHandler : public WriteBatch::Handler {
public:
InMemoryHandler(stringstream& row, bool print_values) : Handler(), row_(row) {
print_values_ = print_values;
}
void commonPutMerge(const Slice& key, const Slice& value) {
string k = LDBCommand::StringToHex(key.ToString());
if (print_values_) {
string v = LDBCommand::StringToHex(value.ToString());
row_ << k << " : ";
row_ << v << " ";
} else {
row_ << k << " ";
}
}
virtual Status PutCF(uint32_t cf, const Slice& key,
const Slice& value) override {
row_ << "PUT(" << cf << ") : ";
commonPutMerge(key, value);
return Status::OK();
}
virtual Status MergeCF(uint32_t cf, const Slice& key,
const Slice& value) override {
row_ << "MERGE(" << cf << ") : ";
commonPutMerge(key, value);
return Status::OK();
}
virtual Status DeleteCF(uint32_t cf, const Slice& key) override {
row_ << "DELETE(" << cf << ") : ";
row_ << LDBCommand::StringToHex(key.ToString()) << " ";
return Status::OK();
}
virtual Status SingleDeleteCF(uint32_t cf, const Slice& key) override {
row_ << "SINGLE_DELETE(" << cf << ") : ";
row_ << LDBCommand::StringToHex(key.ToString()) << " ";
return Status::OK();
}
virtual Status MarkBeginPrepare() {
row_ << "BEGIN_PREARE ";
return Status::OK();
}
virtual Status MarkEndPrepare(const Slice& xid) {
row_ << "END_PREPARE(";
row_ << LDBCommand::StringToHex(xid.ToString()) << ") ";
return Status::OK();
}
virtual Status MarkRollback(const Slice& xid) {
row_ << "ROLLBACK(";
row_ << LDBCommand::StringToHex(xid.ToString()) << ") ";
return Status::OK();
}
virtual Status MarkCommit(const Slice& xid) {
row_ << "COMMIT(";
row_ << LDBCommand::StringToHex(xid.ToString()) << ") ";
return Status::OK();
}
virtual ~InMemoryHandler() {}
private:
stringstream & row_;
bool print_values_;
};
void DumpWalFile(std::string wal_file, bool print_header, bool print_values,
LDBCommandExecuteResult* exec_state) {
Env* env_ = Env::Default();
EnvOptions soptions;
unique_ptr<SequentialFileReader> wal_file_reader;
Status status;
{
unique_ptr<SequentialFile> file;
status = env_->NewSequentialFile(wal_file, &file, soptions);
if (status.ok()) {
wal_file_reader.reset(new SequentialFileReader(std::move(file)));
}
}
if (!status.ok()) {
if (exec_state) {
*exec_state = LDBCommandExecuteResult::Failed("Failed to open WAL file " +
status.ToString());
} else {
cerr << "Error: Failed to open WAL file " << status.ToString()
<< std::endl;
}
} else {
StdErrReporter reporter;
uint64_t log_number;
FileType type;
// we need the log number, but ParseFilename expects dbname/NNN.log.
string sanitized = wal_file;
size_t lastslash = sanitized.rfind('/');
if (lastslash != std::string::npos)
sanitized = sanitized.substr(lastslash + 1);
if (!ParseFileName(sanitized, &log_number, &type)) {
// bogus input, carry on as best we can
log_number = 0;
}
DBOptions db_options;
log::Reader reader(db_options.info_log, move(wal_file_reader), &reporter,
true, 0, log_number);
string scratch;
WriteBatch batch;
Slice record;
stringstream row;
if (print_header) {
cout << "Sequence,Count,ByteSize,Physical Offset,Key(s)";
if (print_values) {
cout << " : value ";
}
cout << "\n";
}
while (reader.ReadRecord(&record, &scratch)) {
row.str("");
if (record.size() < WriteBatchInternal::kHeader) {
reporter.Corruption(record.size(),
Status::Corruption("log record too small"));
} else {
WriteBatchInternal::SetContents(&batch, record);
row << WriteBatchInternal::Sequence(&batch) << ",";
row << WriteBatchInternal::Count(&batch) << ",";
row << WriteBatchInternal::ByteSize(&batch) << ",";
row << reader.LastRecordOffset() << ",";
InMemoryHandler handler(row, print_values);
batch.Iterate(&handler);
row << "\n";
}
cout << row.str();
}
}
}
} // namespace
const string WALDumperCommand::ARG_WAL_FILE = "walfile";
const string WALDumperCommand::ARG_PRINT_VALUE = "print_value";
const string WALDumperCommand::ARG_PRINT_HEADER = "header";
WALDumperCommand::WALDumperCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, true,
BuildCmdLineOptions(
{ARG_WAL_FILE, ARG_PRINT_HEADER, ARG_PRINT_VALUE})),
print_header_(false), print_values_(false) {
wal_file_.clear();
map<string, string>::const_iterator itr = options.find(ARG_WAL_FILE);
if (itr != options.end()) {
wal_file_ = itr->second;
}
print_header_ = IsFlagPresent(flags, ARG_PRINT_HEADER);
print_values_ = IsFlagPresent(flags, ARG_PRINT_VALUE);
if (wal_file_.empty()) {
exec_state_ = LDBCommandExecuteResult::Failed("Argument " + ARG_WAL_FILE +
" must be specified.");
}
}
void WALDumperCommand::Help(string& ret) {
ret.append(" ");
ret.append(WALDumperCommand::Name());
ret.append(" --" + ARG_WAL_FILE + "=<write_ahead_log_file_path>");
ret.append(" [--" + ARG_PRINT_HEADER + "] ");
ret.append(" [--" + ARG_PRINT_VALUE + "] ");
ret.append("\n");
}
void WALDumperCommand::DoCommand() {
DumpWalFile(wal_file_, print_header_, print_values_, &exec_state_);
}
// ----------------------------------------------------------------------------
GetCommand::GetCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, true, BuildCmdLineOptions({ARG_TTL, ARG_HEX,
ARG_KEY_HEX,
ARG_VALUE_HEX})) {
if (params.size() != 1) {
exec_state_ = LDBCommandExecuteResult::Failed(
"<key> must be specified for the get command");
} else {
key_ = params.at(0);
}
if (is_key_hex_) {
key_ = HexToString(key_);
}
}
void GetCommand::Help(string& ret) {
ret.append(" ");
ret.append(GetCommand::Name());
ret.append(" <key>");
ret.append(" [--" + ARG_TTL + "]");
ret.append("\n");
}
void GetCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
string value;
Status st = db_->Get(ReadOptions(), GetCfHandle(), key_, &value);
if (st.ok()) {
fprintf(stdout, "%s\n",
(is_value_hex_ ? StringToHex(value) : value).c_str());
} else {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
}
}
// ----------------------------------------------------------------------------
ApproxSizeCommand::ApproxSizeCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, true,
BuildCmdLineOptions({ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
ARG_FROM, ARG_TO})) {
if (options.find(ARG_FROM) != options.end()) {
start_key_ = options.find(ARG_FROM)->second;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_FROM + " must be specified for approxsize command");
return;
}
if (options.find(ARG_TO) != options.end()) {
end_key_ = options.find(ARG_TO)->second;
} else {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_TO + " must be specified for approxsize command");
return;
}
if (is_key_hex_) {
start_key_ = HexToString(start_key_);
end_key_ = HexToString(end_key_);
}
}
void ApproxSizeCommand::Help(string& ret) {
ret.append(" ");
ret.append(ApproxSizeCommand::Name());
ret.append(HelpRangeCmdArgs());
ret.append("\n");
}
void ApproxSizeCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
Range ranges[1];
ranges[0] = Range(start_key_, end_key_);
uint64_t sizes[1];
db_->GetApproximateSizes(GetCfHandle(), ranges, 1, sizes);
fprintf(stdout, "%lu\n", (unsigned long)sizes[0]);
/* Weird that GetApproximateSizes() returns void, although documentation
* says that it returns a Status object.
if (!st.ok()) {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
}
*/
}
// ----------------------------------------------------------------------------
BatchPutCommand::BatchPutCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
ARG_CREATE_IF_MISSING})) {
if (params.size() < 2) {
exec_state_ = LDBCommandExecuteResult::Failed(
"At least one <key> <value> pair must be specified batchput.");
} else if (params.size() % 2 != 0) {
exec_state_ = LDBCommandExecuteResult::Failed(
"Equal number of <key>s and <value>s must be specified for batchput.");
} else {
for (size_t i = 0; i < params.size(); i += 2) {
string key = params.at(i);
string value = params.at(i+1);
key_values_.push_back(pair<string, string>(
is_key_hex_ ? HexToString(key) : key,
is_value_hex_ ? HexToString(value) : value));
}
}
}
void BatchPutCommand::Help(string& ret) {
ret.append(" ");
ret.append(BatchPutCommand::Name());
ret.append(" <key> <value> [<key> <value>] [..]");
ret.append(" [--" + ARG_TTL + "]");
ret.append("\n");
}
void BatchPutCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
WriteBatch batch;
for (vector<pair<string, string>>::const_iterator itr
= key_values_.begin(); itr != key_values_.end(); ++itr) {
batch.Put(GetCfHandle(), itr->first, itr->second);
}
Status st = db_->Write(WriteOptions(), &batch);
if (st.ok()) {
fprintf(stdout, "OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
}
}
Options BatchPutCommand::PrepareOptionsForOpenDB() {
Options opt = LDBCommand::PrepareOptionsForOpenDB();
opt.create_if_missing = IsFlagPresent(flags_, ARG_CREATE_IF_MISSING);
return opt;
}
// ----------------------------------------------------------------------------
ScanCommand::ScanCommand(const vector<string>& params,
const map<string, string>& options,
const vector<string>& flags)
: LDBCommand(options, flags, true,
BuildCmdLineOptions(
{ARG_TTL, ARG_NO_VALUE, ARG_HEX, ARG_KEY_HEX,
ARG_TO, ARG_VALUE_HEX, ARG_FROM, ARG_TIMESTAMP,
ARG_MAX_KEYS, ARG_TTL_START, ARG_TTL_END})),
start_key_specified_(false),
end_key_specified_(false),
max_keys_scanned_(-1),
no_value_(false) {
map<string, string>::const_iterator itr = options.find(ARG_FROM);
if (itr != options.end()) {
start_key_ = itr->second;
if (is_key_hex_) {
start_key_ = HexToString(start_key_);
}
start_key_specified_ = true;
}
itr = options.find(ARG_TO);
if (itr != options.end()) {
end_key_ = itr->second;
if (is_key_hex_) {
end_key_ = HexToString(end_key_);
}
end_key_specified_ = true;
}
vector<string>::const_iterator vitr =
std::find(flags.begin(), flags.end(), ARG_NO_VALUE);
if (vitr != flags.end()) {
no_value_ = true;
}
itr = options.find(ARG_MAX_KEYS);
if (itr != options.end()) {
try {
#if defined(CYGWIN)
max_keys_scanned_ = strtol(itr->second.c_str(), 0, 10);
#else
max_keys_scanned_ = stoi(itr->second);
#endif
} catch(const invalid_argument&) {
exec_state_ = LDBCommandExecuteResult::Failed(ARG_MAX_KEYS +
" has an invalid value");
} catch(const out_of_range&) {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_MAX_KEYS + " has a value out-of-range");
}
}
}
void ScanCommand::Help(string& ret) {
ret.append(" ");
ret.append(ScanCommand::Name());
ret.append(HelpRangeCmdArgs());
ret.append(" [--" + ARG_TTL + "]");
ret.append(" [--" + ARG_TIMESTAMP + "]");
ret.append(" [--" + ARG_MAX_KEYS + "=<N>q] ");
ret.append(" [--" + ARG_TTL_START + "=<N>:- is inclusive]");
ret.append(" [--" + ARG_TTL_END + "=<N>:- is exclusive]");
ret.append(" [--" + ARG_NO_VALUE + "]");
ret.append("\n");
}
void ScanCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
int num_keys_scanned = 0;
Iterator* it = db_->NewIterator(ReadOptions(), GetCfHandle());
if (start_key_specified_) {
it->Seek(start_key_);
} else {
it->SeekToFirst();
}
int ttl_start;
if (!ParseIntOption(option_map_, ARG_TTL_START, ttl_start, exec_state_)) {
ttl_start = DBWithTTLImpl::kMinTimestamp; // TTL introduction time
}
int ttl_end;
if (!ParseIntOption(option_map_, ARG_TTL_END, ttl_end, exec_state_)) {
ttl_end = DBWithTTLImpl::kMaxTimestamp; // Max time allowed by TTL feature
}
if (ttl_end < ttl_start) {
fprintf(stderr, "Error: End time can't be less than start time\n");
delete it;
return;
}
if (is_db_ttl_ && timestamp_) {
fprintf(stdout, "Scanning key-values from %s to %s\n",
ReadableTime(ttl_start).c_str(), ReadableTime(ttl_end).c_str());
}
for ( ;
it->Valid() && (!end_key_specified_ || it->key().ToString() < end_key_);
it->Next()) {
if (is_db_ttl_) {
TtlIterator* it_ttl = dynamic_cast<TtlIterator*>(it);
assert(it_ttl);
int rawtime = it_ttl->timestamp();
if (rawtime < ttl_start || rawtime >= ttl_end) {
continue;
}
if (timestamp_) {
fprintf(stdout, "%s ", ReadableTime(rawtime).c_str());
}
}
Slice key_slice = it->key();
std::string formatted_key;
if (is_key_hex_) {
formatted_key = "0x" + key_slice.ToString(true /* hex */);
key_slice = formatted_key;
} else if (ldb_options_.key_formatter) {
formatted_key = ldb_options_.key_formatter->Format(key_slice);
key_slice = formatted_key;
}
if (no_value_) {
fprintf(stdout, "%.*s\n", static_cast<int>(key_slice.size()),
key_slice.data());
} else {
Slice val_slice = it->value();
std::string formatted_value;
if (is_value_hex_) {
formatted_value = "0x" + val_slice.ToString(true /* hex */);
val_slice = formatted_value;
}
fprintf(stdout, "%.*s : %.*s\n", static_cast<int>(key_slice.size()),
key_slice.data(), static_cast<int>(val_slice.size()),
val_slice.data());
}
num_keys_scanned++;
if (max_keys_scanned_ >= 0 && num_keys_scanned >= max_keys_scanned_) {
break;
}
}
if (!it->status().ok()) { // Check for any errors found during the scan
exec_state_ = LDBCommandExecuteResult::Failed(it->status().ToString());
}
delete it;
}
// ----------------------------------------------------------------------------
DeleteCommand::DeleteCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX})) {
if (params.size() != 1) {
exec_state_ = LDBCommandExecuteResult::Failed(
"KEY must be specified for the delete command");
} else {
key_ = params.at(0);
if (is_key_hex_) {
key_ = HexToString(key_);
}
}
}
void DeleteCommand::Help(string& ret) {
ret.append(" ");
ret.append(DeleteCommand::Name() + " <key>");
ret.append("\n");
}
void DeleteCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
Status st = db_->Delete(WriteOptions(), GetCfHandle(), key_);
if (st.ok()) {
fprintf(stdout, "OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
}
}
PutCommand::PutCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX,
ARG_CREATE_IF_MISSING})) {
if (params.size() != 2) {
exec_state_ = LDBCommandExecuteResult::Failed(
"<key> and <value> must be specified for the put command");
} else {
key_ = params.at(0);
value_ = params.at(1);
}
if (is_key_hex_) {
key_ = HexToString(key_);
}
if (is_value_hex_) {
value_ = HexToString(value_);
}
}
void PutCommand::Help(string& ret) {
ret.append(" ");
ret.append(PutCommand::Name());
ret.append(" <key> <value> ");
ret.append(" [--" + ARG_TTL + "]");
ret.append("\n");
}
void PutCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
Status st = db_->Put(WriteOptions(), GetCfHandle(), key_, value_);
if (st.ok()) {
fprintf(stdout, "OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
}
}
Options PutCommand::PrepareOptionsForOpenDB() {
Options opt = LDBCommand::PrepareOptionsForOpenDB();
opt.create_if_missing = IsFlagPresent(flags_, ARG_CREATE_IF_MISSING);
return opt;
}
// ----------------------------------------------------------------------------
const char* DBQuerierCommand::HELP_CMD = "help";
const char* DBQuerierCommand::GET_CMD = "get";
const char* DBQuerierCommand::PUT_CMD = "put";
const char* DBQuerierCommand::DELETE_CMD = "delete";
DBQuerierCommand::DBQuerierCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX,
ARG_VALUE_HEX})) {
}
void DBQuerierCommand::Help(string& ret) {
ret.append(" ");
ret.append(DBQuerierCommand::Name());
ret.append(" [--" + ARG_TTL + "]");
ret.append("\n");
ret.append(" Starts a REPL shell. Type help for list of available "
"commands.");
ret.append("\n");
}
void DBQuerierCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
ReadOptions read_options;
WriteOptions write_options;
string line;
string key;
string value;
while (getline(cin, line, '\n')) {
// Parse line into vector<string>
vector<string> tokens;
size_t pos = 0;
while (true) {
size_t pos2 = line.find(' ', pos);
if (pos2 == string::npos) {
break;
}
tokens.push_back(line.substr(pos, pos2-pos));
pos = pos2 + 1;
}
tokens.push_back(line.substr(pos));
const string& cmd = tokens[0];
if (cmd == HELP_CMD) {
fprintf(stdout,
"get <key>\n"
"put <key> <value>\n"
"delete <key>\n");
} else if (cmd == DELETE_CMD && tokens.size() == 2) {
key = (is_key_hex_ ? HexToString(tokens[1]) : tokens[1]);
db_->Delete(write_options, GetCfHandle(), Slice(key));
fprintf(stdout, "Successfully deleted %s\n", tokens[1].c_str());
} else if (cmd == PUT_CMD && tokens.size() == 3) {
key = (is_key_hex_ ? HexToString(tokens[1]) : tokens[1]);
value = (is_value_hex_ ? HexToString(tokens[2]) : tokens[2]);
db_->Put(write_options, GetCfHandle(), Slice(key), Slice(value));
fprintf(stdout, "Successfully put %s %s\n",
tokens[1].c_str(), tokens[2].c_str());
} else if (cmd == GET_CMD && tokens.size() == 2) {
key = (is_key_hex_ ? HexToString(tokens[1]) : tokens[1]);
if (db_->Get(read_options, GetCfHandle(), Slice(key), &value).ok()) {
fprintf(stdout, "%s\n", PrintKeyValue(key, value,
is_key_hex_, is_value_hex_).c_str());
} else {
fprintf(stdout, "Not found %s\n", tokens[1].c_str());
}
} else {
fprintf(stdout, "Unknown command %s\n", line.c_str());
}
}
}
// ----------------------------------------------------------------------------
CheckConsistencyCommand::CheckConsistencyCommand(const vector<string>& params,
const map<string, string>& options, const vector<string>& flags) :
LDBCommand(options, flags, false,
BuildCmdLineOptions({})) {
}
void CheckConsistencyCommand::Help(string& ret) {
ret.append(" ");
ret.append(CheckConsistencyCommand::Name());
ret.append("\n");
}
void CheckConsistencyCommand::DoCommand() {
Options opt = PrepareOptionsForOpenDB();
opt.paranoid_checks = true;
if (!exec_state_.IsNotStarted()) {
return;
}
DB* db;
Status st = DB::OpenForReadOnly(opt, db_path_, &db, false);
delete db;
if (st.ok()) {
fprintf(stdout, "OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
}
}
// ----------------------------------------------------------------------------
RepairCommand::RepairCommand(const vector<string>& params,
const map<string, string>& options,
const vector<string>& flags)
: LDBCommand(options, flags, false, BuildCmdLineOptions({})) {}
void RepairCommand::Help(string& ret) {
ret.append(" ");
ret.append(RepairCommand::Name());
ret.append("\n");
}
void RepairCommand::DoCommand() {
Options options = PrepareOptionsForOpenDB();
options.info_log.reset(new StderrLogger(InfoLogLevel::WARN_LEVEL));
Status status = RepairDB(db_path_, options);
if (status.ok()) {
printf("OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(status.ToString());
}
}
// ----------------------------------------------------------------------------
namespace {
void DumpSstFile(std::string filename, bool output_hex, bool show_properties) {
std::string from_key;
std::string to_key;
if (filename.length() <= 4 ||
filename.rfind(".sst") != filename.length() - 4) {
std::cout << "Invalid sst file name." << std::endl;
return;
}
// no verification
rocksdb::SstFileReader reader(filename, false, output_hex);
Status st = reader.ReadSequential(true, -1, false, // has_from
from_key, false, // has_to
to_key);
if (!st.ok()) {
std::cerr << "Error in reading SST file " << filename << st.ToString()
<< std::endl;
return;
}
if (show_properties) {
const rocksdb::TableProperties* table_properties;
std::shared_ptr<const rocksdb::TableProperties>
table_properties_from_reader;
st = reader.ReadTableProperties(&table_properties_from_reader);
if (!st.ok()) {
std::cerr << filename << ": " << st.ToString()
<< ". Try to use initial table properties" << std::endl;
table_properties = reader.GetInitTableProperties();
} else {
table_properties = table_properties_from_reader.get();
}
if (table_properties != nullptr) {
std::cout << std::endl << "Table Properties:" << std::endl;
std::cout << table_properties->ToString("\n") << std::endl;
std::cout << "# deleted keys: "
<< rocksdb::GetDeletedKeys(
table_properties->user_collected_properties)
<< std::endl;
}
}
}
} // namespace
DBFileDumperCommand::DBFileDumperCommand(const vector<string>& params,
const map<string, string>& options,
const vector<string>& flags)
: LDBCommand(options, flags, true, BuildCmdLineOptions({})) {}
void DBFileDumperCommand::Help(string& ret) {
ret.append(" ");
ret.append(DBFileDumperCommand::Name());
ret.append("\n");
}
void DBFileDumperCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
Status s;
std::cout << "Manifest File" << std::endl;
std::cout << "==============================" << std::endl;
std::string manifest_filename;
s = ReadFileToString(db_->GetEnv(), CurrentFileName(db_->GetName()),
&manifest_filename);
if (!s.ok() || manifest_filename.empty() ||
manifest_filename.back() != '\n') {
std::cerr << "Error when reading CURRENT file "
<< CurrentFileName(db_->GetName()) << std::endl;
}
// remove the trailing '\n'
manifest_filename.resize(manifest_filename.size() - 1);
string manifest_filepath = db_->GetName() + "/" + manifest_filename;
std::cout << manifest_filepath << std::endl;
DumpManifestFile(manifest_filepath, false, false, false);
std::cout << std::endl;
std::cout << "SST Files" << std::endl;
std::cout << "==============================" << std::endl;
std::vector<LiveFileMetaData> metadata;
db_->GetLiveFilesMetaData(&metadata);
for (auto& fileMetadata : metadata) {
std::string filename = fileMetadata.db_path + fileMetadata.name;
std::cout << filename << " level:" << fileMetadata.level << std::endl;
std::cout << "------------------------------" << std::endl;
DumpSstFile(filename, false, true);
std::cout << std::endl;
}
std::cout << std::endl;
std::cout << "Write Ahead Log Files" << std::endl;
std::cout << "==============================" << std::endl;
rocksdb::VectorLogPtr wal_files;
s = db_->GetSortedWalFiles(wal_files);
if (!s.ok()) {
std::cerr << "Error when getting WAL files" << std::endl;
} else {
for (auto& wal : wal_files) {
// TODO(qyang): option.wal_dir should be passed into ldb command
std::string filename = db_->GetOptions().wal_dir + wal->PathName();
std::cout << filename << std::endl;
DumpWalFile(filename, true, true, &exec_state_);
}
}
}
} // namespace rocksdb
#endif // ROCKSDB_LITE