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rocksdb/tools/ldb_cmd.cc
Manuel Ung b9846370e9 WriteUnPrepared: Add support for recovering WriteUnprepared transactions (#4078) 
Summary:
This adds support for recovering WriteUnprepared transactions through the following changes:
- The information in `RecoveredTransaction` is extended so that it can reference multiple batches.
- `MarkBeginPrepare` is extended with a bool indicating whether it is an unprepared begin, and this is passed down to `InsertRecoveredTransaction` to indicate whether the current transaction is prepared or not.
- `WriteUnpreparedTxnDB::Initialize` is overridden so that it will rollback unprepared transactions from the recovered transactions. This can be done without updating the prepare heap/commit map, because this is before the DB has finished initializing, and after writing the rollback batch, those data structures should not contain information about the rolled back transaction anyway.

Commit/Rollback of live transactions is still unimplemented and will come later.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4078

Differential Revision: D8703382

Pulled By: lth

fbshipit-source-id: 7e0aada6c23bd39299f1f20d6c060492e0e6b60a
2018-07-06 17:59:13 -07:00

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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).
//
#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/log_reader.h"
#include "db/write_batch_internal.h"
#include "port/dirent.h"
#include "rocksdb/cache.h"
#include "rocksdb/table_properties.h"
#include "rocksdb/utilities/backupable_db.h"
#include "rocksdb/utilities/checkpoint.h"
#include "rocksdb/utilities/debug.h"
#include "rocksdb/utilities/object_registry.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 "tools/ldb_cmd_impl.h"
#include "tools/sst_dump_tool_imp.h"
#include "util/cast_util.h"
#include "util/coding.h"
#include "util/filename.h"
#include "util/stderr_logger.h"
#include "util/string_util.h"
#include "utilities/ttl/db_ttl_impl.h"
#include <cstdlib>
#include <ctime>
#include <fstream>
#include <functional>
#include <iostream>
#include <limits>
#include <sstream>
#include <stdexcept>
#include <string>
namespace rocksdb {
const std::string LDBCommand::ARG_DB = "db";
const std::string LDBCommand::ARG_PATH = "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_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 char* LDBCommand::DELIM = " ==> ";
namespace {
void DumpWalFile(std::string wal_file, bool print_header, bool print_values,
bool is_write_committed, 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) {
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, '=');
if (splits.size() == 2) {
std::string optionKey = splits[0].substr(OPTION_PREFIX.size());
parsed_params.option_map[optionKey] = splits[1];
} else {
std::string optionKey = splits[0].substr(OPTION_PREFIX.size());
parsed_params.flags.push_back(optionKey);
}
} 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 == 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 == 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 == DBFileDumperCommand::Name()) {
return new DBFileDumperCommand(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);
}
return nullptr;
}
/* Run the command, and return the execute result. */
void LDBCommand::Run() {
if (!exec_state_.IsNotStarted()) {
return;
}
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),
ignore_unknown_options_(false),
create_if_missing_(false),
option_map_(options),
flags_(flags),
valid_cmd_line_options_(valid_cmd_line_options) {
std::map<std::string, std::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);
try_load_options_ = IsFlagPresent(flags, ARG_TRY_LOAD_OPTIONS);
ignore_unknown_options_ = IsFlagPresent(flags, ARG_IGNORE_UNKNOWN_OPTIONS);
}
void LDBCommand::OpenDB() {
if (!create_if_missing_ && try_load_options_) {
Status s = LoadLatestOptions(db_path_, Env::Default(), &options_,
&column_families_, ignore_unknown_options_);
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;
}
}
options_ = 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(options_, db_path_, &db_ttl_, 0, true);
} else {
st = DBWithTTL::Open(options_, 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, options_);
}
}
}
if (is_read_only_) {
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()) {
st = DB::Open(options_, db_path_, &db_);
} else {
st = DB::Open(options_, db_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;
}
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_DB,
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_IGNORE_UNKNOWN_OPTIONS,
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 std::map<std::string, std::string>& /*options*/,
const std::string& option, int& value,
LDBCommandExecuteResult& exec_state) {
std::map<std::string, std::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 = std::stoi(itr->second);
#endif
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.");
}
}
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;
}
Options LDBCommand::PrepareOptionsForOpenDB() {
ColumnFamilyOptions* cf_opts;
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()) {
cf_opts = &column_families_iter->options;
} else {
cf_opts = static_cast<ColumnFamilyOptions*>(&options_);
}
DBOptions* db_opts = static_cast<DBOptions*>(&options_);
db_opts->create_if_missing = false;
std::map<std::string, std::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) {
cf_opts->table_factory.reset(NewBlockBasedTableFactory(table_options));
}
itr = option_map_.find(ARG_AUTO_COMPACTION);
if (itr != option_map_.end()) {
cf_opts->disable_auto_compactions = !StringToBool(itr->second);
}
itr = option_map_.find(ARG_COMPRESSION_TYPE);
if (itr != option_map_.end()) {
std::string comp = itr->second;
if (comp == "no") {
cf_opts->compression = kNoCompression;
} else if (comp == "snappy") {
cf_opts->compression = kSnappyCompression;
} else if (comp == "zlib") {
cf_opts->compression = kZlibCompression;
} else if (comp == "bzip2") {
cf_opts->compression = kBZip2Compression;
} else if (comp == "lz4") {
cf_opts->compression = kLZ4Compression;
} else if (comp == "lz4hc") {
cf_opts->compression = kLZ4HCCompression;
} else if (comp == "xpress") {
cf_opts->compression = kXpressCompression;
} else if (comp == "zstd") {
cf_opts->compression = kZSTD;
} else {
// Unknown compression.
exec_state_ =
LDBCommandExecuteResult::Failed("Unknown compression level: " + comp);
}
}
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 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) {
db_opts->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) {
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.");
}
}
if (db_opts->db_paths.size() == 0) {
db_opts->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) {
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.");
}
}
// TODO(ajkr): this return value doesn't reflect the CF options changed, so
// subcommands that rely on this won't see the effect of CF-related CLI args.
// Such subcommands need to be changed to properly support CFs.
return 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) {
*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 (std::map<std::string, std::string>::const_iterator itr =
option_map_.begin();
itr != option_map_.end(); ++itr) {
if (std::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 (std::vector<std::string>::const_iterator itr = flags_.begin();
itr != flags_.end(); ++itr) {
if (std::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;
}
std::string LDBCommand::HexToString(const std::string& str) {
std::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;
}
std::string LDBCommand::StringToHex(const std::string& str) {
std::string result("0x");
result.append(Slice(str).ToString(true));
return result;
}
std::string LDBCommand::PrintKeyValue(const std::string& key,
const std::string& value, bool is_key_hex,
bool is_value_hex) {
std::string result;
result.append(is_key_hex ? StringToHex(key) : key);
result.append(DELIM);
result.append(is_value_hex ? StringToHex(value) : value);
return result;
}
std::string LDBCommand::PrintKeyValue(const std::string& key,
const std::string& value, bool is_hex) {
return PrintKeyValue(key, value, is_hex, is_hex);
}
std::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 std::map<std::string, std::string>& options,
const std::vector<std::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 std::map<std::string, std::string>& options,
const std::vector<std::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 std::map<std::string, std::string>& options,
const std::string& option, bool default_val) {
std::map<std::string, std::string>::const_iterator itr = options.find(option);
if (itr != options.end()) {
std::string option_val = itr->second;
return StringToBool(itr->second);
}
return default_val;
}
bool LDBCommand::StringToBool(std::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 std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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) {
std::map<std::string, std::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(std::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, GetCfHandle(), begin, end);
exec_state_ = LDBCommandExecuteResult::Succeed("");
delete begin;
delete end;
}
// ----------------------------------------------------------------------------
const std::string DBLoaderCommand::ARG_DISABLE_WAL = "disable_wal";
const std::string DBLoaderCommand::ARG_BULK_LOAD = "bulk_load";
const std::string DBLoaderCommand::ARG_COMPACT = "compact";
DBLoaderCommand::DBLoaderCommand(
const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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})),
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(std::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;
std::string line;
// prefer ifstream getline performance vs that from std::cin istream
std::ifstream ifs_stdin("/dev/stdin");
std::istream* istream_p = ifs_stdin.is_open() ? &ifs_stdin : &std::cin;
while (getline(*istream_p, line, '\n')) {
std::string key;
std::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) {
std::cout << "Warning: " << bad_lines << " bad lines ignored." << std::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);
WriteBufferManager wb(options.db_write_buffer_size);
ImmutableDBOptions immutable_db_options(options);
VersionSet versions(dbname, &immutable_db_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 std::string ManifestDumpCommand::ARG_VERBOSE = "verbose";
const std::string ManifestDumpCommand::ARG_JSON = "json";
const std::string ManifestDumpCommand::ARG_PATH = "path";
void ManifestDumpCommand::Help(std::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 std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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);
std::map<std::string, std::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(std::string& ret) {
ret.append(" ");
ret.append(ListColumnFamiliesCommand::Name());
ret.append(" full_path_to_db_directory ");
ret.append("\n");
}
ListColumnFamiliesCommand::ListColumnFamiliesCommand(
const std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::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() {
std::vector<std::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(std::string& ret) {
ret.append(" ");
ret.append(CreateColumnFamilyCommand::Name());
ret.append(" --db=<db_path> <new_column_family_name>");
ret.append("\n");
}
CreateColumnFamilyCommand::CreateColumnFamilyCommand(
const std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::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 = nullptr;
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 {
std::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 std::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(std::vector<uint64_t>& bucket_counts, int ttl_start,
int time_range, int bucket_size, int timekv,
int num_buckets) {
#ifdef NDEBUG
(void)time_range;
(void)num_buckets;
#endif
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 std::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 std::string InternalDumpCommand::ARG_COUNT_ONLY = "count_only";
const std::string InternalDumpCommand::ARG_COUNT_DELIM = "count_delim";
const std::string InternalDumpCommand::ARG_STATS = "stats";
const std::string InternalDumpCommand::ARG_INPUT_KEY_HEX = "input_key_hex";
InternalDumpCommand::InternalDumpCommand(
const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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_);
std::map<std::string, std::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(std::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_) {
std::string stats;
if (db_->GetProperty(GetCfHandle(), "rocksdb.stats", &stats)) {
fprintf(stdout, "%s\n", stats.c_str());
}
}
// Cast as DBImpl to get internal iterator
std::vector<KeyVersion> key_versions;
Status st = GetAllKeyVersions(db_, from_, to_, &key_versions);
if (!st.ok()) {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
return;
}
std::string rtype1, rtype2, row, val;
rtype2 = "";
uint64_t c=0;
uint64_t s1=0,s2=0;
long long count = 0;
for (auto& key_version : key_versions) {
InternalKey ikey(key_version.user_key, key_version.sequence,
static_cast<ValueType>(key_version.type));
if (has_to_ && ikey.user_key() == to_) {
// GetAllKeyVersions() includes keys with user key `to_`, but idump has
// traditionally excluded such keys.
break;
}
++count;
int k;
if (count_delim_) {
rtype1 = "";
s1=0;
row = ikey.Encode().ToString();
val = key_version.value;
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:%" PRIu64 "\tsize:%" PRIu64 "\n",
rtype2.c_str(), c, s2);
c=1;
s2=s1;
rtype2 = rtype1;
} else {
c++;
s2+=s1;
rtype2=rtype1;
}
}
if (!count_only_ && !count_delim_) {
std::string key = ikey.DebugString(is_key_hex_);
std::string value = Slice(key_version.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:%" PRIu64 "\tsize:%" PRIu64 "\n",
rtype2.c_str(), c, s2);
} else {
fprintf(stdout, "Internal keys in range: %lld\n", count);
}
}
const std::string DBDumperCommand::ARG_COUNT_ONLY = "count_only";
const std::string DBDumperCommand::ARG_COUNT_DELIM = "count_delim";
const std::string DBDumperCommand::ARG_STATS = "stats";
const std::string DBDumperCommand::ARG_TTL_BUCKET = "bucket";
DBDumperCommand::DBDumperCommand(
const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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) {
std::map<std::string, std::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_ = std::stoi(itr->second);
#endif
} catch (const std::invalid_argument&) {
exec_state_ = LDBCommandExecuteResult::Failed(ARG_MAX_KEYS +
" has an invalid value");
} catch (const std::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;
if (db_path_.empty()) {
db_path_ = path_;
}
}
}
void DBDumperCommand::Help(std::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());
std::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:
// TODO(myabandeh): allow configuring is_write_commited
DumpWalFile(path_, /* print_header_ */ true, /* print_values_ */ true,
true /* is_write_commited */, &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_) {
std::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
std::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);
std::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());
}
HistogramImpl vsize_hist;
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 = static_cast_with_check<TtlIterator, Iterator>(iter);
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:%" PRIu64 "\tsize:%" PRIu64 "\n",
rtype2.c_str(), c, s2);
c=1;
s2=s1;
rtype2 = rtype1;
} else {
c++;
s2+=s1;
rtype2=rtype1;
}
}
if (count_only_) {
vsize_hist.Add(iter->value().size());
}
if (!count_only_ && !count_delim_) {
if (is_db_ttl_ && timestamp_) {
fprintf(stdout, "%s ", ReadableTime(rawtime).c_str());
}
std::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:%" PRIu64 "\tsize:%" PRIu64 "\n",
rtype2.c_str(), c, s2);
} else {
fprintf(stdout, "Keys in range: %" PRIu64 "\n", count);
}
if (count_only_) {
fprintf(stdout, "Value size distribution: \n");
fprintf(stdout, "%s\n", vsize_hist.ToString().c_str());
}
// Clean up
delete iter;
}
const std::string ReduceDBLevelsCommand::ARG_NEW_LEVELS = "new_levels";
const std::string ReduceDBLevelsCommand::ARG_PRINT_OLD_LEVELS =
"print_old_levels";
ReduceDBLevelsCommand::ReduceDBLevelsCommand(
const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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");
}
}
std::vector<std::string> ReduceDBLevelsCommand::PrepareArgs(
const std::string& db_path, int new_levels, bool print_old_level) {
std::vector<std::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(std::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) {
ImmutableDBOptions db_options(opt);
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);
WriteBufferManager wb(opt.db_write_buffer_size);
VersionSet versions(db_path_, &db_options, 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 (exec_state_.IsFailed()) {
return;
}
assert(db_ != nullptr);
// 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 std::string ChangeCompactionStyleCommand::ARG_OLD_COMPACTION_STYLE =
"old_compaction_style";
const std::string ChangeCompactionStyleCommand::ARG_NEW_COMPACTION_STYLE =
"new_compaction_style";
ChangeCompactionStyleCommand::ChangeCompactionStyleCommand(
const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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(std::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(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;
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 {
std::cerr << "Corruption detected in log file " << s.ToString() << "\n";
}
};
class InMemoryHandler : public WriteBatch::Handler {
public:
InMemoryHandler(std::stringstream& row, bool print_values,
bool write_after_commit = false)
: Handler(),
row_(row),
print_values_(print_values),
write_after_commit_(write_after_commit) {}
void commonPutMerge(const Slice& key, const Slice& value) {
std::string k = LDBCommand::StringToHex(key.ToString());
if (print_values_) {
std::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 MarkNoop(bool)
override {
row_ << "NOOP ";
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 DeleteRangeCF(uint32_t cf, const Slice& begin_key,
const Slice& end_key) override {
row_ << "DELETE_RANGE(" << cf << ") : ";
row_ << LDBCommand::StringToHex(begin_key.ToString()) << " ";
row_ << LDBCommand::StringToHex(end_key.ToString()) << " ";
return Status::OK();
}
virtual Status MarkBeginPrepare(bool unprepare) override {
row_ << "BEGIN_PREPARE(";
row_ << (unprepare ? "true" : "false") << ") ";
return Status::OK();
}
virtual Status MarkEndPrepare(const Slice& xid) override {
row_ << "END_PREPARE(";
row_ << LDBCommand::StringToHex(xid.ToString()) << ") ";
return Status::OK();
}
virtual Status MarkRollback(const Slice& xid) override {
row_ << "ROLLBACK(";
row_ << LDBCommand::StringToHex(xid.ToString()) << ") ";
return Status::OK();
}
virtual Status MarkCommit(const Slice& xid) override {
row_ << "COMMIT(";
row_ << LDBCommand::StringToHex(xid.ToString()) << ") ";
return Status::OK();
}
virtual ~InMemoryHandler() {}
protected:
virtual bool WriteAfterCommit() const override { return write_after_commit_; }
private:
std::stringstream& row_;
bool print_values_;
bool write_after_commit_;
};
void DumpWalFile(std::string wal_file, bool print_header, bool print_values,
bool is_write_committed, 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), wal_file));
}
}
if (!status.ok()) {
if (exec_state) {
*exec_state = LDBCommandExecuteResult::Failed("Failed to open WAL file " +
status.ToString());
} else {
std::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.
std::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, std::move(wal_file_reader),
&reporter, true, 0, log_number);
std::string scratch;
WriteBatch batch;
Slice record;
std::stringstream row;
if (print_header) {
std::cout << "Sequence,Count,ByteSize,Physical Offset,Key(s)";
if (print_values) {
std::cout << " : value ";
}
std::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, is_write_committed);
batch.Iterate(&handler);
row << "\n";
}
std::cout << row.str();
}
}
}
} // namespace
const std::string WALDumperCommand::ARG_WAL_FILE = "walfile";
const std::string WALDumperCommand::ARG_WRITE_COMMITTED = "write_committed";
const std::string WALDumperCommand::ARG_PRINT_VALUE = "print_value";
const std::string WALDumperCommand::ARG_PRINT_HEADER = "header";
WALDumperCommand::WALDumperCommand(
const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: LDBCommand(options, flags, true,
BuildCmdLineOptions({ARG_WAL_FILE, ARG_WRITE_COMMITTED,
ARG_PRINT_HEADER, ARG_PRINT_VALUE})),
print_header_(false),
print_values_(false),
is_write_committed_(false) {
wal_file_.clear();
std::map<std::string, std::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);
is_write_committed_ = ParseBooleanOption(options, ARG_WRITE_COMMITTED, true);
if (wal_file_.empty()) {
exec_state_ = LDBCommandExecuteResult::Failed("Argument " + ARG_WAL_FILE +
" must be specified.");
}
}
void WALDumperCommand::Help(std::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(" [--" + ARG_WRITE_COMMITTED + "=true|false] ");
ret.append("\n");
}
void WALDumperCommand::DoCommand() {
DumpWalFile(wal_file_, print_header_, print_values_, is_write_committed_,
&exec_state_);
}
// ----------------------------------------------------------------------------
GetCommand::GetCommand(const std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::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(std::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;
}
std::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 std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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(std::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 std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::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) {
std::string key = params.at(i);
std::string value = params.at(i + 1);
key_values_.push_back(std::pair<std::string, std::string>(
is_key_hex_ ? HexToString(key) : key,
is_value_hex_ ? HexToString(value) : value));
}
}
create_if_missing_ = IsFlagPresent(flags_, ARG_CREATE_IF_MISSING);
}
void BatchPutCommand::Help(std::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 (std::vector<std::pair<std::string, std::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 = create_if_missing_;
return opt;
}
// ----------------------------------------------------------------------------
ScanCommand::ScanCommand(const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::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) {
std::map<std::string, std::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;
}
std::vector<std::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_ = std::stoi(itr->second);
#endif
} catch (const std::invalid_argument&) {
exec_state_ = LDBCommandExecuteResult::Failed(ARG_MAX_KEYS +
" has an invalid value");
} catch (const std::out_of_range&) {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_MAX_KEYS + " has a value out-of-range");
}
}
}
void ScanCommand::Help(std::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 = static_cast_with_check<TtlIterator, Iterator>(it);
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 std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::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(std::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());
}
}
DeleteRangeCommand::DeleteRangeCommand(
const std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: LDBCommand(options, flags, false,
BuildCmdLineOptions({ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX})) {
if (params.size() != 2) {
exec_state_ = LDBCommandExecuteResult::Failed(
"begin and end keys must be specified for the delete command");
} else {
begin_key_ = params.at(0);
end_key_ = params.at(1);
if (is_key_hex_) {
begin_key_ = HexToString(begin_key_);
end_key_ = HexToString(end_key_);
}
}
}
void DeleteRangeCommand::Help(std::string& ret) {
ret.append(" ");
ret.append(DeleteRangeCommand::Name() + " <begin key> <end key>");
ret.append("\n");
}
void DeleteRangeCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
Status st =
db_->DeleteRange(WriteOptions(), GetCfHandle(), begin_key_, end_key_);
if (st.ok()) {
fprintf(stdout, "OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(st.ToString());
}
}
PutCommand::PutCommand(const std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::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_);
}
create_if_missing_ = IsFlagPresent(flags_, ARG_CREATE_IF_MISSING);
}
void PutCommand::Help(std::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 = 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 std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: LDBCommand(
options, flags, false,
BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX, ARG_VALUE_HEX})) {
}
void DBQuerierCommand::Help(std::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;
std::string line;
std::string key;
std::string value;
while (getline(std::cin, line, '\n')) {
// Parse line into std::vector<std::string>
std::vector<std::string> tokens;
size_t pos = 0;
while (true) {
size_t pos2 = line.find(' ', pos);
if (pos2 == std::string::npos) {
break;
}
tokens.push_back(line.substr(pos, pos2-pos));
pos = pos2 + 1;
}
tokens.push_back(line.substr(pos));
const std::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 std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: LDBCommand(options, flags, false, BuildCmdLineOptions({})) {}
void CheckConsistencyCommand::Help(std::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());
}
}
// ----------------------------------------------------------------------------
const std::string CheckPointCommand::ARG_CHECKPOINT_DIR = "checkpoint_dir";
CheckPointCommand::CheckPointCommand(
const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: LDBCommand(options, flags, false /* is_read_only */,
BuildCmdLineOptions({ARG_CHECKPOINT_DIR})) {
auto itr = options.find(ARG_CHECKPOINT_DIR);
if (itr != options.end()) {
checkpoint_dir_ = itr->second;
}
}
void CheckPointCommand::Help(std::string& ret) {
ret.append(" ");
ret.append(CheckPointCommand::Name());
ret.append(" [--" + ARG_CHECKPOINT_DIR + "] ");
ret.append("\n");
}
void CheckPointCommand::DoCommand() {
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
Checkpoint* checkpoint;
Status status = Checkpoint::Create(db_, &checkpoint);
status = checkpoint->CreateCheckpoint(checkpoint_dir_);
if (status.ok()) {
printf("OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(status.ToString());
}
}
// ----------------------------------------------------------------------------
RepairCommand::RepairCommand(const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: LDBCommand(options, flags, false, BuildCmdLineOptions({})) {}
void RepairCommand::Help(std::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());
}
}
// ----------------------------------------------------------------------------
const std::string BackupableCommand::ARG_NUM_THREADS = "num_threads";
const std::string BackupableCommand::ARG_BACKUP_ENV_URI = "backup_env_uri";
const std::string BackupableCommand::ARG_BACKUP_DIR = "backup_dir";
const std::string BackupableCommand::ARG_STDERR_LOG_LEVEL = "stderr_log_level";
BackupableCommand::BackupableCommand(
const std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: LDBCommand(options, flags, false /* is_read_only */,
BuildCmdLineOptions({ARG_BACKUP_ENV_URI, ARG_BACKUP_DIR,
ARG_NUM_THREADS, ARG_STDERR_LOG_LEVEL})),
num_threads_(1) {
auto itr = options.find(ARG_NUM_THREADS);
if (itr != options.end()) {
num_threads_ = std::stoi(itr->second);
}
itr = options.find(ARG_BACKUP_ENV_URI);
if (itr != options.end()) {
backup_env_uri_ = itr->second;
}
itr = options.find(ARG_BACKUP_DIR);
if (itr == options.end()) {
exec_state_ = LDBCommandExecuteResult::Failed("--" + ARG_BACKUP_DIR +
": missing backup directory");
} else {
backup_dir_ = itr->second;
}
itr = options.find(ARG_STDERR_LOG_LEVEL);
if (itr != options.end()) {
int stderr_log_level = std::stoi(itr->second);
if (stderr_log_level < 0 ||
stderr_log_level >= InfoLogLevel::NUM_INFO_LOG_LEVELS) {
exec_state_ = LDBCommandExecuteResult::Failed(
ARG_STDERR_LOG_LEVEL + " must be >= 0 and < " +
std::to_string(InfoLogLevel::NUM_INFO_LOG_LEVELS) + ".");
} else {
logger_.reset(
new StderrLogger(static_cast<InfoLogLevel>(stderr_log_level)));
}
}
}
void BackupableCommand::Help(const std::string& name, std::string& ret) {
ret.append(" ");
ret.append(name);
ret.append(" [--" + ARG_BACKUP_ENV_URI + "] ");
ret.append(" [--" + ARG_BACKUP_DIR + "] ");
ret.append(" [--" + ARG_NUM_THREADS + "] ");
ret.append(" [--" + ARG_STDERR_LOG_LEVEL + "=<int (InfoLogLevel)>] ");
ret.append("\n");
}
// ----------------------------------------------------------------------------
BackupCommand::BackupCommand(const std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: BackupableCommand(params, options, flags) {}
void BackupCommand::Help(std::string& ret) {
BackupableCommand::Help(Name(), ret);
}
void BackupCommand::DoCommand() {
BackupEngine* backup_engine;
Status status;
if (!db_) {
assert(GetExecuteState().IsFailed());
return;
}
printf("open db OK\n");
std::unique_ptr<Env> custom_env_guard;
Env* custom_env = NewCustomObject<Env>(backup_env_uri_, &custom_env_guard);
BackupableDBOptions backup_options =
BackupableDBOptions(backup_dir_, custom_env);
backup_options.info_log = logger_.get();
backup_options.max_background_operations = num_threads_;
status = BackupEngine::Open(Env::Default(), backup_options, &backup_engine);
if (status.ok()) {
printf("open backup engine OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(status.ToString());
return;
}
status = backup_engine->CreateNewBackup(db_);
if (status.ok()) {
printf("create new backup OK\n");
} else {
exec_state_ = LDBCommandExecuteResult::Failed(status.ToString());
return;
}
}
// ----------------------------------------------------------------------------
RestoreCommand::RestoreCommand(
const std::vector<std::string>& params,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: BackupableCommand(params, options, flags) {}
void RestoreCommand::Help(std::string& ret) {
BackupableCommand::Help(Name(), ret);
}
void RestoreCommand::DoCommand() {
std::unique_ptr<Env> custom_env_guard;
Env* custom_env = NewCustomObject<Env>(backup_env_uri_, &custom_env_guard);
std::unique_ptr<BackupEngineReadOnly> restore_engine;
Status status;
{
BackupableDBOptions opts(backup_dir_, custom_env);
opts.info_log = logger_.get();
opts.max_background_operations = num_threads_;
BackupEngineReadOnly* raw_restore_engine_ptr;
status = BackupEngineReadOnly::Open(Env::Default(), opts,
&raw_restore_engine_ptr);
if (status.ok()) {
restore_engine.reset(raw_restore_engine_ptr);
}
}
if (status.ok()) {
printf("open restore engine OK\n");
status = restore_engine->RestoreDBFromLatestBackup(db_path_, db_path_);
}
if (status.ok()) {
printf("restore from backup 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, std::numeric_limits<uint64_t>::max(), 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 std::vector<std::string>& /*params*/,
const std::map<std::string, std::string>& options,
const std::vector<std::string>& flags)
: LDBCommand(options, flags, true, BuildCmdLineOptions({})) {}
void DBFileDumperCommand::Help(std::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);
std::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;
// TODO(myabandeh): allow configuring is_write_commited
DumpWalFile(filename, true, true, true /* is_write_commited */,
&exec_state_);
}
}
}
} // namespace rocksdb
#endif // ROCKSDB_LITE
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