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options_helper.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.
#include "util/options_helper.h"
#include <cassert>
#include <cctype>
#include <cstdlib>
#include <unordered_set>
#include <vector>
#include "rocksdb/cache.h"
#include "rocksdb/compaction_filter.h"
#include "rocksdb/convenience.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/memtablerep.h"
#include "rocksdb/merge_operator.h"
#include "rocksdb/options.h"
#include "rocksdb/rate_limiter.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/table.h"
#include "table/block_based_table_factory.h"
#include "table/plain_table_factory.h"
#include "util/logging.h"
#include "util/string_util.h"
namespace rocksdb {
#ifndef ROCKSDB_LITE
bool isSpecialChar(const char c) {
if (c == '\\' || c == '#' || c == ':' || c == '\r' || c == '\n') {
return true;
}
return false;
}
namespace {
using
CharMap = std::pair<char, char>;
}
char UnescapeChar(const char c) {
static const CharMap convert_map[] = {{'r', '\r'},
{'n', '\n'}};
auto iter = std::find_if(std::begin(convert_map),
std::end(convert_map),
[c](const CharMap& p) { return p.first == c; });
if (iter == std::end(convert_map)) {
return c;
}
return iter->second;
}
char EscapeChar(const char c) {
static const CharMap convert_map[] = {{'\n', 'n'},
{'\r', 'r'}};
auto iter = std::find_if(std::begin(convert_map),
std::end(convert_map),
[c](const CharMap& p) { return p.first == c; });
if (iter == std::end(convert_map)) {
return c;
}
return iter->second;
}
std::string EscapeOptionString(const std::string& raw_string) {
std::string output;
for (auto c : raw_string) {
if (isSpecialChar(c)) {
output += '\\';
output += EscapeChar(c);
} else {
output += c;
}
}
return output;
}
std::string UnescapeOptionString(const std::string& escaped_string) {
bool escaped = false;
std::string output;
for (auto c : escaped_string) {
if (escaped) {
output += UnescapeChar(c);
escaped = false;
} else {
if (c == '\\') {
escaped = true;
continue;
}
output += c;
}
}
return output;
}
uint64_t ParseUint64(const std::string& value) {
size_t endchar;
#ifndef CYGWIN
uint64_t num = std::stoull(value.c_str(), &endchar);
#else
char* endptr;
uint64_t num = std::strtoul(value.c_str(), &endptr, 0);
endchar = endptr - value.c_str();
#endif
if (endchar < value.length()) {
char c = value[endchar];
if (c == 'k' || c == 'K')
num <<= 10LL;
else if (c == 'm' || c == 'M')
num <<= 20LL;
else if (c == 'g' || c == 'G')
num <<= 30LL;
else if (c == 't' || c == 'T')
num <<= 40LL;
}
return num;
}
namespace {
std::string trim(const std::string& str) {
if (str.empty()) return std::string();
size_t start = 0;
size_t end = str.size() - 1;
while (isspace(str[start]) != 0 && start <= end) {
++start;
}
while (isspace(str[end]) != 0 && start <= end) {
--end;
}
if (start <= end) {
return str.substr(start, end - start + 1);
}
return std::string();
}
template <typename T>
bool ParseEnum(const std::unordered_map<std::string, T>& type_map,
const std::string& type, T* value) {
auto iter = type_map.find(type);
if (iter != type_map.end()) {
*value = iter->second;
return true;
}
return false;
}
template <typename T>
bool SerializeEnum(const std::unordered_map<std::string, T>& type_map,
const T& type, std::string* value) {
for (const auto& pair : type_map) {
if (pair.second == type) {
*value = pair.first;
return true;
}
}
return false;
}
bool SerializeVectorCompressionType(const std::vector<CompressionType>& types,
std::string* value) {
std::stringstream ss;
bool result;
for (size_t i = 0; i < types.size(); ++i) {
if (i > 0) {
ss << ':';
}
std::string string_type;
result = SerializeEnum<CompressionType>(compression_type_string_map,
types[i], &string_type);
if (result == false) {
return result;
}
ss << string_type;
}
*value = ss.str();
return true;
}
bool ParseBoolean(const std::string& type, const std::string& value) {
if (value == "true" || value == "1") {
return true;
} else if (value == "false" || value == "0") {
return false;
}
throw std::invalid_argument(type);
}
size_t ParseSizeT(const std::string& value) {
return static_cast<size_t>(ParseUint64(value));
}
uint32_t ParseUint32(const std::string& value) {
uint64_t num = ParseUint64(value);
if ((num >> 32LL) == 0) {
return static_cast<uint32_t>(num);
} else {
throw std::out_of_range(value);
}
}
int ParseInt(const std::string& value) {
size_t endchar;
#ifndef CYGWIN
int num = std::stoi(value.c_str(), &endchar);
#else
char* endptr;
int num = std::strtoul(value.c_str(), &endptr, 0);
endchar = endptr - value.c_str();
#endif
if (endchar < value.length()) {
char c = value[endchar];
if (c == 'k' || c == 'K')
num <<= 10;
else if (c == 'm' || c == 'M')
num <<= 20;
else if (c == 'g' || c == 'G')
num <<= 30;
}
return num;
}
double ParseDouble(const std::string& value) {
#ifndef CYGWIN
return std::stod(value);
#else
return std::strtod(value.c_str(), 0);
#endif
}
bool ParseVectorCompressionType(
const std::string& value,
std::vector<CompressionType>* compression_per_level) {
compression_per_level->clear();
size_t start = 0;
while (start < value.size()) {
size_t end = value.find(':', start);
bool is_ok;
CompressionType type;
if (end == std::string::npos) {
is_ok = ParseEnum<CompressionType>(compression_type_string_map,
value.substr(start), &type);
if (!is_ok) {
return false;
}
compression_per_level->emplace_back(type);
break;
} else {
is_ok = ParseEnum<CompressionType>(
compression_type_string_map, value.substr(start, end - start), &type);
if (!is_ok) {
return false;
}
compression_per_level->emplace_back(type);
start = end + 1;
}
}
return true;
}
bool ParseSliceTransformHelper(
const std::string& kFixedPrefixName, const std::string& kCappedPrefixName,
const std::string& value,
std::shared_ptr<const SliceTransform>* slice_transform) {
static const std::string kNullptrString = "nullptr";
auto& pe_value = value;
if (pe_value.size() > kFixedPrefixName.size() &&
pe_value.compare(0, kFixedPrefixName.size(), kFixedPrefixName) == 0) {
int prefix_length = ParseInt(trim(value.substr(kFixedPrefixName.size())));
slice_transform->reset(NewFixedPrefixTransform(prefix_length));
} else if (pe_value.size() > kCappedPrefixName.size() &&
pe_value.compare(0, kCappedPrefixName.size(), kCappedPrefixName) ==
0) {
int prefix_length =
ParseInt(trim(pe_value.substr(kCappedPrefixName.size())));
slice_transform->reset(NewCappedPrefixTransform(prefix_length));
} else if (value == kNullptrString) {
slice_transform->reset();
} else {
return false;
}
return true;
}
bool ParseSliceTransform(
const std::string& value,
std::shared_ptr<const SliceTransform>* slice_transform) {
// While we normally don't convert the string representation of a
// pointer-typed option into its instance, here we do so for backward
// compatibility as we allow this action in SetOption().
// TODO(yhchiang): A possible better place for these serialization /
// deserialization is inside the class definition of pointer-typed
// option itself, but this requires a bigger change of public API.
bool result =
ParseSliceTransformHelper("fixed:", "capped:", value, slice_transform);
if (result) {
return result;
}
result = ParseSliceTransformHelper(
"rocksdb.FixedPrefix.", "rocksdb.CappedPrefix.", value, slice_transform);
if (result) {
return result;
}
// TODO(yhchiang): we can further support other default
// SliceTransforms here.
return false;
}
bool ParseOptionHelper(char* opt_address, const OptionType& opt_type,
const std::string& value) {
switch (opt_type) {
case OptionType::kBoolean:
*reinterpret_cast<bool*>(opt_address) = ParseBoolean("", value);
break;
case OptionType::kInt:
*reinterpret_cast<int*>(opt_address) = ParseInt(value);
break;
case OptionType::kUInt:
*reinterpret_cast<unsigned int*>(opt_address) = ParseUint32(value);
break;
case OptionType::kUInt32T:
*reinterpret_cast<uint32_t*>(opt_address) = ParseUint32(value);
break;
case OptionType::kUInt64T:
*reinterpret_cast<uint64_t*>(opt_address) = ParseUint64(value);
break;
case OptionType::kSizeT:
*reinterpret_cast<size_t*>(opt_address) = ParseSizeT(value);
break;
case OptionType::kString:
*reinterpret_cast<std::string*>(opt_address) = value;
break;
case OptionType::kDouble:
*reinterpret_cast<double*>(opt_address) = ParseDouble(value);
break;
case OptionType::kCompactionStyle:
return ParseEnum<CompactionStyle>(
compaction_style_string_map, value,
reinterpret_cast<CompactionStyle*>(opt_address));
case OptionType::kCompressionType:
return ParseEnum<CompressionType>(
compression_type_string_map, value,
reinterpret_cast<CompressionType*>(opt_address));
case OptionType::kVectorCompressionType:
return ParseVectorCompressionType(
value, reinterpret_cast<std::vector<CompressionType>*>(opt_address));
case OptionType::kSliceTransform:
return ParseSliceTransform(
value, reinterpret_cast<std::shared_ptr<const SliceTransform>*>(
opt_address));
case OptionType::kChecksumType:
return ParseEnum<ChecksumType>(
checksum_type_string_map, value,
reinterpret_cast<ChecksumType*>(opt_address));
case OptionType::kBlockBasedTableIndexType:
return ParseEnum<BlockBasedTableOptions::IndexType>(
block_base_table_index_type_string_map, value,
reinterpret_cast<BlockBasedTableOptions::IndexType*>(opt_address));
case OptionType::kEncodingType:
return ParseEnum<EncodingType>(
encoding_type_string_map, value,
reinterpret_cast<EncodingType*>(opt_address));
case OptionType::kWALRecoveryMode:
return ParseEnum<WALRecoveryMode>(
wal_recovery_mode_string_map, value,
reinterpret_cast<WALRecoveryMode*>(opt_address));
case OptionType::kAccessHint:
return ParseEnum<DBOptions::AccessHint>(
access_hint_string_map, value,
reinterpret_cast<DBOptions::AccessHint*>(opt_address));
case OptionType::kInfoLogLevel:
return ParseEnum<InfoLogLevel>(
info_log_level_string_map, value,
reinterpret_cast<InfoLogLevel*>(opt_address));
default:
return false;
}
return true;
}
} // anonymouse namespace
bool SerializeSingleOptionHelper(const char* opt_address,
const OptionType opt_type,
std::string* value) {
static const std::string kNullptrString = "nullptr";
assert(value);
switch (opt_type) {
case OptionType::kBoolean:
*value = *(reinterpret_cast<const bool*>(opt_address)) ? "true" : "false";
break;
case OptionType::kInt:
*value = ToString(*(reinterpret_cast<const int*>(opt_address)));
break;
case OptionType::kUInt:
*value = ToString(*(reinterpret_cast<const unsigned int*>(opt_address)));
break;
case OptionType::kUInt32T:
*value = ToString(*(reinterpret_cast<const uint32_t*>(opt_address)));
break;
case OptionType::kUInt64T:
*value = ToString(*(reinterpret_cast<const uint64_t*>(opt_address)));
break;
case OptionType::kSizeT:
*value = ToString(*(reinterpret_cast<const size_t*>(opt_address)));
break;
case OptionType::kDouble:
*value = ToString(*(reinterpret_cast<const double*>(opt_address)));
break;
case OptionType::kString:
*value = EscapeOptionString(
*(reinterpret_cast<const std::string*>(opt_address)));
break;
case OptionType::kCompactionStyle:
return SerializeEnum<CompactionStyle>(
compaction_style_string_map,
*(reinterpret_cast<const CompactionStyle*>(opt_address)), value);
case OptionType::kCompressionType:
return SerializeEnum<CompressionType>(
compression_type_string_map,
*(reinterpret_cast<const CompressionType*>(opt_address)), value);
case OptionType::kVectorCompressionType:
return SerializeVectorCompressionType(
*(reinterpret_cast<const std::vector<CompressionType>*>(opt_address)),
value);
break;
case OptionType::kSliceTransform: {
const auto* slice_transform_ptr =
reinterpret_cast<const std::shared_ptr<const SliceTransform>*>(
opt_address);
*value = slice_transform_ptr->get() ? slice_transform_ptr->get()->Name()
: kNullptrString;
break;
}
case OptionType::kTableFactory: {
const auto* table_factory_ptr =
reinterpret_cast<const std::shared_ptr<const TableFactory>*>(
opt_address);
*value = table_factory_ptr->get() ? table_factory_ptr->get()->Name()
: kNullptrString;
break;
}
case OptionType::kComparator: {
// it's a const pointer of const Comparator*
const auto* ptr = reinterpret_cast<const Comparator* const*>(opt_address);
// Since the user-specified comparator will be wrapped by
// InternalKeyComparator, we should persist the user-specified one
// instead of InternalKeyComparator.
const auto* internal_comparator =
dynamic_cast<const InternalKeyComparator*>(*ptr);
if (internal_comparator != nullptr) {
*value = internal_comparator->user_comparator()->Name();
} else {
*value = *ptr ? (*ptr)->Name() : kNullptrString;
}
break;
}
case OptionType::kCompactionFilter: {
// it's a const pointer of const CompactionFilter*
const auto* ptr =
reinterpret_cast<const CompactionFilter* const*>(opt_address);
*value = *ptr ? (*ptr)->Name() : kNullptrString;
break;
}
case OptionType::kCompactionFilterFactory: {
const auto* ptr =
reinterpret_cast<const std::shared_ptr<CompactionFilterFactory>*>(
opt_address);
*value = ptr->get() ? ptr->get()->Name() : kNullptrString;
break;
}
case OptionType::kMemTableRepFactory: {
const auto* ptr =
reinterpret_cast<const std::shared_ptr<MemTableRepFactory>*>(
opt_address);
*value = ptr->get() ? ptr->get()->Name() : kNullptrString;
break;
}
case OptionType::kMergeOperator: {
const auto* ptr =
reinterpret_cast<const std::shared_ptr<MergeOperator>*>(opt_address);
*value = ptr->get() ? ptr->get()->Name() : kNullptrString;
break;
}
case OptionType::kFilterPolicy: {
const auto* ptr =
reinterpret_cast<const std::shared_ptr<FilterPolicy>*>(opt_address);
*value = ptr->get() ? ptr->get()->Name() : kNullptrString;
break;
}
case OptionType::kChecksumType:
return SerializeEnum<ChecksumType>(
checksum_type_string_map,
*reinterpret_cast<const ChecksumType*>(opt_address), value);
case OptionType::kBlockBasedTableIndexType:
return SerializeEnum<BlockBasedTableOptions::IndexType>(
block_base_table_index_type_string_map,
*reinterpret_cast<const BlockBasedTableOptions::IndexType*>(
opt_address),
value);
case OptionType::kFlushBlockPolicyFactory: {
const auto* ptr =
reinterpret_cast<const std::shared_ptr<FlushBlockPolicyFactory>*>(
opt_address);
*value = ptr->get() ? ptr->get()->Name() : kNullptrString;
break;
}
case OptionType::kEncodingType:
return SerializeEnum<EncodingType>(
encoding_type_string_map,
*reinterpret_cast<const EncodingType*>(opt_address), value);
case OptionType::kWALRecoveryMode:
return SerializeEnum<WALRecoveryMode>(
wal_recovery_mode_string_map,
*reinterpret_cast<const WALRecoveryMode*>(opt_address), value);
case OptionType::kAccessHint:
return SerializeEnum<DBOptions::AccessHint>(
access_hint_string_map,
*reinterpret_cast<const DBOptions::AccessHint*>(opt_address), value);
case OptionType::kInfoLogLevel:
return SerializeEnum<InfoLogLevel>(
info_log_level_string_map,
*reinterpret_cast<const InfoLogLevel*>(opt_address), value);
default:
return false;
}
return true;
}
template<typename OptionsType>
bool ParseMemtableOptions(const std::string& name, const std::string& value,
OptionsType* new_options) {
if (name == "write_buffer_size") {
new_options->write_buffer_size = ParseSizeT(value);
} else if (name == "arena_block_size") {
new_options->arena_block_size = ParseSizeT(value);
} else if (name == "memtable_prefix_bloom_bits") {
// deprecated
} else if (name == "memtable_prefix_bloom_size_ratio") {
new_options->memtable_prefix_bloom_size_ratio = ParseDouble(value);
} else if (name == "memtable_prefix_bloom_probes") {
// Deprecated
} else if (name == "memtable_prefix_bloom_huge_page_tlb_size") {
// Deprecated
} else if (name == "memtable_huge_page_size") {
new_options->memtable_huge_page_size = ParseSizeT(value);
} else if (name == "max_successive_merges") {
new_options->max_successive_merges = ParseSizeT(value);
} else if (name == "filter_deletes") {
// Deprecated
} else if (name == "max_write_buffer_number") {
new_options->max_write_buffer_number = ParseInt(value);
} else if (name == "inplace_update_num_locks") {
new_options->inplace_update_num_locks = ParseSizeT(value);
} else {
return false;
}
return true;
}
template<typename OptionsType>
bool ParseCompactionOptions(const std::string& name, const std::string& value,
OptionsType* new_options) {
if (name == "disable_auto_compactions") {
new_options->disable_auto_compactions = ParseBoolean(name, value);
} else if (name == "soft_rate_limit") {
// Deprecated options but still leave it here to avoid older options
// strings can be consumed.
} else if (name == "soft_pending_compaction_bytes_limit") {
new_options->soft_pending_compaction_bytes_limit = ParseUint64(value);
} else if (name == "hard_pending_compaction_bytes_limit") {
new_options->hard_pending_compaction_bytes_limit = ParseUint64(value);
} else if (name == "hard_rate_limit") {
// Deprecated options but still leave it here to avoid older options
// strings can be consumed.
} else if (name == "level0_file_num_compaction_trigger") {
new_options->level0_file_num_compaction_trigger = ParseInt(value);
} else if (name == "level0_slowdown_writes_trigger") {
new_options->level0_slowdown_writes_trigger = ParseInt(value);
} else if (name == "level0_stop_writes_trigger") {
new_options->level0_stop_writes_trigger = ParseInt(value);
} else if (name == "max_grandparent_overlap_factor") {
new_options->max_grandparent_overlap_factor = ParseInt(value);
} else if (name == "expanded_compaction_factor") {
new_options->expanded_compaction_factor = ParseInt(value);
} else if (name == "source_compaction_factor") {
new_options->source_compaction_factor = ParseInt(value);
} else if (name == "target_file_size_base") {
new_options->target_file_size_base = ParseInt(value);
} else if (name == "target_file_size_multiplier") {
new_options->target_file_size_multiplier = ParseInt(value);
} else if (name == "max_bytes_for_level_base") {
new_options->max_bytes_for_level_base = ParseUint64(value);
} else if (name == "max_bytes_for_level_multiplier") {
new_options->max_bytes_for_level_multiplier = ParseInt(value);
} else if (name == "max_bytes_for_level_multiplier_additional") {
new_options->max_bytes_for_level_multiplier_additional.clear();
size_t start = 0;
while (true) {
size_t end = value.find(':', start);
if (end == std::string::npos) {
new_options->max_bytes_for_level_multiplier_additional.push_back(
ParseInt(value.substr(start)));
break;
} else {
new_options->max_bytes_for_level_multiplier_additional.push_back(
ParseInt(value.substr(start, end - start)));
start = end + 1;
}
}
} else if (name == "verify_checksums_in_compaction") {
new_options->verify_checksums_in_compaction = ParseBoolean(name, value);
} else {
return false;
}
return true;
}
template<typename OptionsType>
bool ParseMiscOptions(const std::string& name, const std::string& value,
OptionsType* new_options) {
if (name == "max_sequential_skip_in_iterations") {
new_options->max_sequential_skip_in_iterations = ParseUint64(value);
} else if (name == "paranoid_file_checks") {
new_options->paranoid_file_checks = ParseBoolean(name, value);
} else if (name == "report_bg_io_stats") {
new_options->report_bg_io_stats = ParseBoolean(name, value);
} else if (name == "compression") {
bool is_ok = ParseEnum<CompressionType>(compression_type_string_map, value,
&new_options->compression);
if (!is_ok) {
return false;
}
} else if (name == "min_partial_merge_operands") {
new_options->min_partial_merge_operands = ParseUint32(value);
} else {
return false;
}
return true;
}
Status GetMutableOptionsFromStrings(
const MutableCFOptions& base_options,
const std::unordered_map<std::string, std::string>& options_map,
MutableCFOptions* new_options) {
assert(new_options);
*new_options = base_options;
for (const auto& o : options_map) {
try {
if (ParseMemtableOptions(o.first, o.second, new_options)) {
} else if (ParseCompactionOptions(o.first, o.second, new_options)) {
} else if (ParseMiscOptions(o.first, o.second, new_options)) {
} else {
return Status::InvalidArgument(
"unsupported dynamic option: " + o.first);
}
} catch (std::exception& e) {
return Status::InvalidArgument("error parsing " + o.first + ":" +
std::string(e.what()));
}
}
return Status::OK();
}
Status StringToMap(const std::string& opts_str,
std::unordered_map<std::string, std::string>* opts_map) {
assert(opts_map);
// Example:
// opts_str = "write_buffer_size=1024;max_write_buffer_number=2;"
// "nested_opt={opt1=1;opt2=2};max_bytes_for_level_base=100"
size_t pos = 0;
std::string opts = trim(opts_str);
while (pos < opts.size()) {
size_t eq_pos = opts.find('=', pos);
if (eq_pos == std::string::npos) {
return Status::InvalidArgument("Mismatched key value pair, '=' expected");
}
std::string key = trim(opts.substr(pos, eq_pos - pos));
if (key.empty()) {
return Status::InvalidArgument("Empty key found");
}
// skip space after '=' and look for '{' for possible nested options
pos = eq_pos + 1;
while (pos < opts.size() && isspace(opts[pos])) {
++pos;
}
// Empty value at the end
if (pos >= opts.size()) {
(*opts_map)[key] = "";
break;
}
if (opts[pos] == '{') {
int count = 1;
size_t brace_pos = pos + 1;
while (brace_pos < opts.size()) {
if (opts[brace_pos] == '{') {
++count;
} else if (opts[brace_pos] == '}') {
--count;
if (count == 0) {
break;
}
}
++brace_pos;
}
// found the matching closing brace
if (count == 0) {
(*opts_map)[key] = trim(opts.substr(pos + 1, brace_pos - pos - 1));
// skip all whitespace and move to the next ';'
// brace_pos points to the next position after the matching '}'
pos = brace_pos + 1;
while (pos < opts.size() && isspace(opts[pos])) {
++pos;
}
if (pos < opts.size() && opts[pos] != ';') {
return Status::InvalidArgument(
"Unexpected chars after nested options");
}
++pos;
} else {
return Status::InvalidArgument(
"Mismatched curly braces for nested options");
}
} else {
size_t sc_pos = opts.find(';', pos);
if (sc_pos == std::string::npos) {
(*opts_map)[key] = trim(opts.substr(pos));
// It either ends with a trailing semi-colon or the last key-value pair
break;
} else {
(*opts_map)[key] = trim(opts.substr(pos, sc_pos - pos));
}
pos = sc_pos + 1;
}
}
return Status::OK();
}
Status ParseColumnFamilyOption(const std::string& name,
const std::string& org_value,
ColumnFamilyOptions* new_options,
bool input_strings_escaped = false) {
const std::string& value =
input_strings_escaped ? UnescapeOptionString(org_value) : org_value;
try {
if (name == "max_bytes_for_level_multiplier_additional") {
new_options->max_bytes_for_level_multiplier_additional.clear();
size_t start = 0;
while (true) {
size_t end = value.find(':', start);
if (end == std::string::npos) {
new_options->max_bytes_for_level_multiplier_additional.push_back(
ParseInt(value.substr(start)));
break;
} else {
new_options->max_bytes_for_level_multiplier_additional.push_back(
ParseInt(value.substr(start, end - start)));
start = end + 1;
}
}
} else if (name == "block_based_table_factory") {
// Nested options
BlockBasedTableOptions table_opt, base_table_options;
auto block_based_table_factory = dynamic_cast<BlockBasedTableFactory*>(
new_options->table_factory.get());
if (block_based_table_factory != nullptr) {
base_table_options = block_based_table_factory->table_options();
}
Status table_opt_s = GetBlockBasedTableOptionsFromString(
base_table_options, value, &table_opt);
if (!table_opt_s.ok()) {
return Status::InvalidArgument(
"unable to parse the specified CF option " + name);
}
new_options->table_factory.reset(NewBlockBasedTableFactory(table_opt));
} else if (name == "plain_table_factory") {
// Nested options
PlainTableOptions table_opt, base_table_options;
auto plain_table_factory = dynamic_cast<PlainTableFactory*>(
new_options->table_factory.get());
if (plain_table_factory != nullptr) {
base_table_options = plain_table_factory->table_options();
}
Status table_opt_s = GetPlainTableOptionsFromString(
base_table_options, value, &table_opt);
if (!table_opt_s.ok()) {
return Status::InvalidArgument(
"unable to parse the specified CF option " + name);
}
new_options->table_factory.reset(NewPlainTableFactory(table_opt));
} else if (name == "memtable") {
std::unique_ptr<MemTableRepFactory> new_mem_factory;
Status mem_factory_s =
GetMemTableRepFactoryFromString(value, &new_mem_factory);
if (!mem_factory_s.ok()) {
return Status::InvalidArgument(
"unable to parse the specified CF option " + name);
}
new_options->memtable_factory.reset(new_mem_factory.release());
} else if (name == "compression_opts") {
size_t start = 0;
size_t end = value.find(':');
if (end == std::string::npos) {
return Status::InvalidArgument(
"unable to parse the specified CF option " + name);
}
new_options->compression_opts.window_bits =
ParseInt(value.substr(start, end - start));
start = end + 1;
end = value.find(':', start);
if (end == std::string::npos) {
return Status::InvalidArgument(
"unable to parse the specified CF option " + name);
}
new_options->compression_opts.level =
ParseInt(value.substr(start, end - start));
start = end + 1;
if (start >= value.size()) {
return Status::InvalidArgument(
"unable to parse the specified CF option " + name);
}
end = value.find(':', start);
new_options->compression_opts.strategy =
ParseInt(value.substr(start, value.size() - start));
// max_dict_bytes is optional for backwards compatibility
if (end != std::string::npos) {
start = end + 1;
if (start >= value.size()) {
return Status::InvalidArgument(
"unable to parse the specified CF option " + name);
}
new_options->compression_opts.max_dict_bytes =
ParseInt(value.substr(start, value.size() - start));
}
} else if (name == "compaction_options_fifo") {
new_options->compaction_options_fifo.max_table_files_size =
ParseUint64(value);
} else {
auto iter = cf_options_type_info.find(name);
if (iter == cf_options_type_info.end()) {
return Status::InvalidArgument(
"Unable to parse the specified CF option " + name);
}
const auto& opt_info = iter->second;
if (opt_info.verification != OptionVerificationType::kDeprecated &&
ParseOptionHelper(
reinterpret_cast<char*>(new_options) + opt_info.offset,
opt_info.type, value)) {
return Status::OK();
}
switch (opt_info.verification) {
case OptionVerificationType::kByName:
case OptionVerificationType::kByNameAllowNull:
return Status::NotSupported(
"Deserializing the specified CF option " + name +
" is not supported");
case OptionVerificationType::kDeprecated:
return Status::OK();
default:
return Status::InvalidArgument(
"Unable to parse the specified CF option " + name);
}
}
} catch (const std::exception&) {
return Status::InvalidArgument(
"unable to parse the specified option " + name);
}
return Status::OK();
}
bool SerializeSingleDBOption(std::string* opt_string,
const DBOptions& db_options,
const std::string& name,
const std::string& delimiter) {
auto iter = db_options_type_info.find(name);
if (iter == db_options_type_info.end()) {
return false;
}
auto& opt_info = iter->second;
const char* opt_address =
reinterpret_cast<const char*>(&db_options) + opt_info.offset;
std::string value;
bool result = SerializeSingleOptionHelper(opt_address, opt_info.type, &value);
if (result) {
*opt_string = name + "=" + value + delimiter;
}
return result;
}
Status GetStringFromDBOptions(std::string* opt_string,
const DBOptions& db_options,
const std::string& delimiter) {
assert(opt_string);
opt_string->clear();
for (auto iter = db_options_type_info.begin();
iter != db_options_type_info.end(); ++iter) {
if (iter->second.verification == OptionVerificationType::kDeprecated) {
// If the option is no longer used in rocksdb and marked as deprecated,
// we skip it in the serialization.
continue;
}
std::string single_output;
bool result = SerializeSingleDBOption(&single_output, db_options,
iter->first, delimiter);
assert(result);
if (result) {
opt_string->append(single_output);
}
}
return Status::OK();
}
bool SerializeSingleColumnFamilyOption(std::string* opt_string,
const ColumnFamilyOptions& cf_options,
const std::string& name,
const std::string& delimiter) {
auto iter = cf_options_type_info.find(name);
if (iter == cf_options_type_info.end()) {
return false;
}
auto& opt_info = iter->second;
const char* opt_address =
reinterpret_cast<const char*>(&cf_options) + opt_info.offset;
std::string value;
bool result = SerializeSingleOptionHelper(opt_address, opt_info.type, &value);
if (result) {
*opt_string = name + "=" + value + delimiter;
}
return result;
}
Status GetStringFromColumnFamilyOptions(std::string* opt_string,
const ColumnFamilyOptions& cf_options,
const std::string& delimiter) {
assert(opt_string);
opt_string->clear();
for (auto iter = cf_options_type_info.begin();
iter != cf_options_type_info.end(); ++iter) {
if (iter->second.verification == OptionVerificationType::kDeprecated) {
// If the option is no longer used in rocksdb and marked as deprecated,
// we skip it in the serialization.
continue;
}
std::string single_output;
bool result = SerializeSingleColumnFamilyOption(&single_output, cf_options,
iter->first, delimiter);
if (result) {
opt_string->append(single_output);
} else {
return Status::InvalidArgument("failed to serialize %s\n",
iter->first.c_str());
}
assert(result);
}
return Status::OK();
}
Status GetStringFromCompressionType(std::string* compression_str,
CompressionType compression_type) {
bool ok = SerializeEnum<CompressionType>(compression_type_string_map,
compression_type, compression_str);
if (ok) {
return Status::OK();
} else {
return Status::InvalidArgument("Invalid compression types");
}
}
bool SerializeSingleBlockBasedTableOption(
std::string* opt_string, const BlockBasedTableOptions& bbt_options,
const std::string& name, const std::string& delimiter) {
auto iter = block_based_table_type_info.find(name);
if (iter == block_based_table_type_info.end()) {
return false;
}
auto& opt_info = iter->second;
const char* opt_address =
reinterpret_cast<const char*>(&bbt_options) + opt_info.offset;
std::string value;
bool result = SerializeSingleOptionHelper(opt_address, opt_info.type, &value);
if (result) {
*opt_string = name + "=" + value + delimiter;
}
return result;
}