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rocksdb/options/configurable.cc

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#include "rocksdb/configurable.h"
#include "logging/logging.h"
#include "options/configurable_helper.h"
#include "options/options_helper.h"
#include "rocksdb/customizable.h"
#include "rocksdb/status.h"
#include "rocksdb/utilities/object_registry.h"
#include "rocksdb/utilities/options_type.h"
#include "util/coding.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
void Configurable::RegisterOptions(
const std::string& name, void* opt_ptr,
const std::unordered_map<std::string, OptionTypeInfo>* type_map) {
RegisteredOptions opts;
opts.name = name;
#ifndef ROCKSDB_LITE
opts.type_map = type_map;
#else
(void)type_map;
#endif // ROCKSDB_LITE
opts.opt_ptr = opt_ptr;
options_.emplace_back(opts);
}
//*************************************************************************
//
// Methods for Initializing and Validating Configurable Objects
//
//*************************************************************************
Status Configurable::PrepareOptions(const ConfigOptions& opts) {
Status status = Status::OK();
#ifndef ROCKSDB_LITE
for (auto opt_iter : options_) {
for (auto map_iter : *(opt_iter.type_map)) {
auto& opt_info = map_iter.second;
if (!opt_info.IsDeprecated() && !opt_info.IsAlias() &&
opt_info.IsConfigurable()) {
if (!opt_info.IsEnabled(OptionTypeFlags::kDontPrepare)) {
Configurable* config =
opt_info.AsRawPointer<Configurable>(opt_iter.opt_ptr);
if (config != nullptr) {
status = config->PrepareOptions(opts);
if (!status.ok()) {
return status;
}
}
}
}
}
}
#else
(void)opts;
#endif // ROCKSDB_LITE
if (status.ok()) {
prepared_ = true;
}
return status;
}
Status Configurable::ValidateOptions(const DBOptions& db_opts,
const ColumnFamilyOptions& cf_opts) const {
Status status;
#ifndef ROCKSDB_LITE
for (auto opt_iter : options_) {
for (auto map_iter : *(opt_iter.type_map)) {
auto& opt_info = map_iter.second;
if (!opt_info.IsDeprecated() && !opt_info.IsAlias()) {
if (opt_info.IsConfigurable()) {
const Configurable* config =
opt_info.AsRawPointer<Configurable>(opt_iter.opt_ptr);
if (config != nullptr) {
status = config->ValidateOptions(db_opts, cf_opts);
} else if (!opt_info.CanBeNull()) {
status =
Status::NotFound("Missing configurable object", map_iter.first);
}
if (!status.ok()) {
return status;
}
}
}
}
}
#else
(void)db_opts;
(void)cf_opts;
#endif // ROCKSDB_LITE
return status;
}
/*********************************************************************************/
/* */
/* Methods for Retrieving Options from Configurables */
/* */
/*********************************************************************************/
const void* Configurable::GetOptionsPtr(const std::string& name) const {
for (auto o : options_) {
if (o.name == name) {
return o.opt_ptr;
}
}
return nullptr;
}
std::string Configurable::GetOptionName(const std::string& opt_name) const {
return opt_name;
}
#ifndef ROCKSDB_LITE
const OptionTypeInfo* ConfigurableHelper::FindOption(
const std::vector<Configurable::RegisteredOptions>& options,
const std::string& short_name, std::string* opt_name, void** opt_ptr) {
for (auto iter : options) {
const auto opt_info =
OptionTypeInfo::Find(short_name, *(iter.type_map), opt_name);
if (opt_info != nullptr) {
*opt_ptr = iter.opt_ptr;
return opt_info;
}
}
return nullptr;
}
#endif // ROCKSDB_LITE
//*************************************************************************
//
// Methods for Configuring Options from Strings/Name-Value Pairs/Maps
//
//*************************************************************************
Status Configurable::ConfigureFromMap(
const ConfigOptions& config_options,
const std::unordered_map<std::string, std::string>& opts_map) {
Status s = ConfigureFromMap(config_options, opts_map, nullptr);
return s;
}
Status Configurable::ConfigureFromMap(
const ConfigOptions& config_options,
const std::unordered_map<std::string, std::string>& opts_map,
std::unordered_map<std::string, std::string>* unused) {
return ConfigureOptions(config_options, opts_map, unused);
}
Status Configurable::ConfigureOptions(
const ConfigOptions& config_options,
const std::unordered_map<std::string, std::string>& opts_map,
std::unordered_map<std::string, std::string>* unused) {
std::string curr_opts;
#ifndef ROCKSDB_LITE
if (!config_options.ignore_unknown_options) {
// If we are not ignoring unused, get the defaults in case we need to reset
ConfigOptions copy = config_options;
copy.depth = ConfigOptions::kDepthDetailed;
copy.delimiter = "; ";
GetOptionString(copy, &curr_opts).PermitUncheckedError();
}
#endif // ROCKSDB_LITE
Status s = ConfigurableHelper::ConfigureOptions(config_options, *this,
opts_map, unused);
if (config_options.invoke_prepare_options && s.ok()) {
s = PrepareOptions(config_options);
}
#ifndef ROCKSDB_LITE
if (!s.ok() && !curr_opts.empty()) {
ConfigOptions reset = config_options;
reset.ignore_unknown_options = true;
reset.invoke_prepare_options = true;
// There are some options to reset from this current error
ConfigureFromString(reset, curr_opts).PermitUncheckedError();
}
#endif // ROCKSDB_LITE
return s;
}
Status Configurable::ParseStringOptions(const ConfigOptions& /*config_options*/,
const std::string& /*opts_str*/) {
return Status::OK();
}
Status Configurable::ConfigureFromString(const ConfigOptions& config_options,
const std::string& opts_str) {
Status s;
if (!opts_str.empty()) {
#ifndef ROCKSDB_LITE
if (opts_str.find(';') != std::string::npos ||
opts_str.find('=') != std::string::npos) {
std::unordered_map<std::string, std::string> opt_map;
s = StringToMap(opts_str, &opt_map);
if (s.ok()) {
s = ConfigureFromMap(config_options, opt_map, nullptr);
}
} else {
#endif // ROCKSDB_LITE
s = ParseStringOptions(config_options, opts_str);
if (s.ok() && config_options.invoke_prepare_options) {
s = PrepareOptions(config_options);
}
#ifndef ROCKSDB_LITE
}
#endif // ROCKSDB_LITE
} else if (config_options.invoke_prepare_options) {
s = PrepareOptions(config_options);
} else {
s = Status::OK();
}
return s;
}
#ifndef ROCKSDB_LITE
/**
* Sets the value of the named property to the input value, returning OK on
* succcess.
*/
Status Configurable::ConfigureOption(const ConfigOptions& config_options,
const std::string& name,
const std::string& value) {
return ConfigurableHelper::ConfigureSingleOption(config_options, *this, name,
value);
}
/**
* Looks for the named option amongst the options for this type and sets
* the value for it to be the input value.
* If the name was found, found_option will be set to true and the resulting
* status should be returned.
*/
Status Configurable::ParseOption(const ConfigOptions& config_options,
const OptionTypeInfo& opt_info,
const std::string& opt_name,
const std::string& opt_value, void* opt_ptr) {
if (opt_info.IsMutable()) {
if (config_options.mutable_options_only) {
// This option is mutable. Treat all of its children as mutable as well
ConfigOptions copy = config_options;
copy.mutable_options_only = false;
return opt_info.Parse(copy, opt_name, opt_value, opt_ptr);
} else {
return opt_info.Parse(config_options, opt_name, opt_value, opt_ptr);
}
} else if (config_options.mutable_options_only) {
return Status::InvalidArgument("Option not changeable: " + opt_name);
} else {
return opt_info.Parse(config_options, opt_name, opt_value, opt_ptr);
}
}
#endif // ROCKSDB_LITE
Status ConfigurableHelper::ConfigureOptions(
const ConfigOptions& config_options, Configurable& configurable,
const std::unordered_map<std::string, std::string>& opts_map,
std::unordered_map<std::string, std::string>* unused) {
std::unordered_map<std::string, std::string> remaining = opts_map;
Status s = Status::OK();
if (!opts_map.empty()) {
#ifndef ROCKSDB_LITE
for (const auto& iter : configurable.options_) {
s = ConfigureSomeOptions(config_options, configurable, *(iter.type_map),
&remaining, iter.opt_ptr);
if (remaining.empty()) { // Are there more options left?
break;
} else if (!s.ok()) {
break;
}
}
#else
(void)configurable;
if (!config_options.ignore_unknown_options) {
s = Status::NotSupported("ConfigureFromMap not supported in LITE mode");
}
#endif // ROCKSDB_LITE
}
if (unused != nullptr && !remaining.empty()) {
unused->insert(remaining.begin(), remaining.end());
}
if (config_options.ignore_unknown_options) {
s = Status::OK();
} else if (s.ok() && unused == nullptr && !remaining.empty()) {
s = Status::NotFound("Could not find option: ", remaining.begin()->first);
}
return s;
}
#ifndef ROCKSDB_LITE
/**
* Updates the object with the named-value property values, returning OK on
* succcess. Any properties that were found are removed from the options list;
* upon return only options that were not found in this opt_map remain.
* Returns:
* - OK if ignore_unknown_options is set
* - InvalidArgument, if any option was invalid
* - NotSupported, if any option is unsupported and ignore_unsupported_options
is OFF
* - OK, if no option was invalid or not supported (or ignored)
*/
Status ConfigurableHelper::ConfigureSomeOptions(
const ConfigOptions& config_options, Configurable& configurable,
const std::unordered_map<std::string, OptionTypeInfo>& type_map,
std::unordered_map<std::string, std::string>* options, void* opt_ptr) {
Status result = Status::OK(); // The last non-OK result (if any)
Status notsup = Status::OK(); // The last NotSupported result (if any)
std::string elem_name;
int found = 1;
std::unordered_set<std::string> unsupported;
// While there are unused properties and we processed at least one,
// go through the remaining unused properties and attempt to configure them.
while (found > 0 && !options->empty()) {
found = 0;
notsup = Status::OK();
for (auto it = options->begin(); it != options->end();) {
const std::string& opt_name = configurable.GetOptionName(it->first);
const std::string& opt_value = it->second;
const auto opt_info =
OptionTypeInfo::Find(opt_name, type_map, &elem_name);
if (opt_info == nullptr) { // Did not find the option. Skip it
++it;
} else {
Status s = ConfigureOption(config_options, configurable, *opt_info,
opt_name, elem_name, opt_value, opt_ptr);
if (s.IsNotFound()) {
++it;
} else if (s.IsNotSupported()) {
notsup = s;
unsupported.insert(it->first);
++it; // Skip it for now
} else {
found++;
it = options->erase(it);
if (!s.ok()) {
result = s;
}
}
}
} // End for all remaining options
} // End while found one or options remain
// Now that we have been through the list, remove any unsupported
for (auto u : unsupported) {
auto it = options->find(u);
if (it != options->end()) {
options->erase(it);
}
}
if (config_options.ignore_unknown_options) {
if (!result.ok()) result.PermitUncheckedError();
if (!notsup.ok()) notsup.PermitUncheckedError();
return Status::OK();
} else if (!result.ok()) {
if (!notsup.ok()) notsup.PermitUncheckedError();
return result;
} else if (config_options.ignore_unsupported_options) {
if (!notsup.ok()) notsup.PermitUncheckedError();
return Status::OK();
} else {
return notsup;
}
}
Status ConfigurableHelper::ConfigureSingleOption(
const ConfigOptions& config_options, Configurable& configurable,
const std::string& name, const std::string& value) {
const std::string& opt_name = configurable.GetOptionName(name);
std::string elem_name;
void* opt_ptr = nullptr;
const auto opt_info =
FindOption(configurable.options_, opt_name, &elem_name, &opt_ptr);
if (opt_info == nullptr) {
return Status::NotFound("Could not find option: ", name);
} else {
return ConfigureOption(config_options, configurable, *opt_info, opt_name,
elem_name, value, opt_ptr);
}
}
Status ConfigurableHelper::ConfigureCustomizableOption(
const ConfigOptions& config_options, Configurable& configurable,
const OptionTypeInfo& opt_info, const std::string& opt_name,
const std::string& name, const std::string& value, void* opt_ptr) {
Customizable* custom = opt_info.AsRawPointer<Customizable>(opt_ptr);
ConfigOptions copy = config_options;
if (opt_info.IsMutable()) {
// This option is mutable. Pass that property on to any subsequent calls
copy.mutable_options_only = false;
}
if (opt_info.IsMutable() || !config_options.mutable_options_only) {
// Either the option is mutable, or we are processing all of the options
if (opt_name == name ||
EndsWith(opt_name, ConfigurableHelper::kIdPropSuffix) ||
name == ConfigurableHelper::kIdPropName) {
return configurable.ParseOption(copy, opt_info, opt_name, value, opt_ptr);
} else if (value.empty()) {
return Status::OK();
} else if (custom == nullptr || !StartsWith(name, custom->GetId() + ".")) {
return configurable.ParseOption(copy, opt_info, name, value, opt_ptr);
} else if (value.find("=") != std::string::npos) {
return custom->ConfigureFromString(copy, value);
} else {
return custom->ConfigureOption(copy, name, value);
}
} else {
// We are processing immutable options, which means that we cannot change
// the Customizable object itself, but could change its mutable properties.
// Check to make sure that nothing is trying to change the Customizable
if (custom == nullptr) {
// We do not have a Customizable to configure. This is OK if the
// value is empty (nothing being configured) but an error otherwise
if (value.empty()) {
return Status::OK();
} else {
return Status::InvalidArgument("Option not changeable: " + opt_name);
}
} else if (EndsWith(opt_name, ConfigurableHelper::kIdPropSuffix) ||
name == ConfigurableHelper::kIdPropName) {
// We have a property of the form "id=value" or "table.id=value"
// This is OK if we ID/value matches the current customizable object
if (custom->GetId() == value) {
return Status::OK();
} else {
return Status::InvalidArgument("Option not changeable: " + opt_name);
}
} else if (opt_name == name) {
// The properties are of one of forms:
// name = { id = id; prop1 = value1; ... }
// name = { prop1=value1; prop2=value2; ... }
// name = ID
// Convert the value to a map and extract the ID
// If the ID does not match that of the current customizable, return an
// error. Otherwise, update the current customizable via the properties
// map
std::unordered_map<std::string, std::string> props;
std::string id;
Status s = GetOptionsMap(value, custom->GetId(), &id, &props);
if (!s.ok()) {
return s;
} else if (custom->GetId() != id) {
return Status::InvalidArgument("Option not changeable: " + opt_name);
} else if (props.empty()) {
return Status::OK();
} else {
return custom->ConfigureFromMap(copy, props);
}
} else {
// Attempting to configure one of the properties of the customizable
// Let it through
return custom->ConfigureOption(copy, name, value);
}
}
}
Status ConfigurableHelper::ConfigureOption(
const ConfigOptions& config_options, Configurable& configurable,
const OptionTypeInfo& opt_info, const std::string& opt_name,
const std::string& name, const std::string& value, void* opt_ptr) {
if (opt_info.IsCustomizable()) {
return ConfigureCustomizableOption(config_options, configurable, opt_info,
opt_name, name, value, opt_ptr);
} else if (opt_name == name) {
return configurable.ParseOption(config_options, opt_info, opt_name, value,
opt_ptr);
} else if (opt_info.IsStruct() || opt_info.IsConfigurable()) {
return configurable.ParseOption(config_options, opt_info, name, value,
opt_ptr);
} else {
return Status::NotFound("Could not find option: ", name);
}
}
#endif // ROCKSDB_LITE
Status ConfigurableHelper::ConfigureNewObject(
const ConfigOptions& config_options_in, Configurable* object,
const std::string& id, const std::string& base_opts,
const std::unordered_map<std::string, std::string>& opts) {
if (object != nullptr) {
ConfigOptions config_options = config_options_in;
config_options.invoke_prepare_options = false;
if (!base_opts.empty()) {
#ifndef ROCKSDB_LITE
// Don't run prepare options on the base, as we would do that on the
// overlay opts instead
Status status = object->ConfigureFromString(config_options, base_opts);
if (!status.ok()) {
return status;
}
#endif // ROCKSDB_LITE
}
if (!opts.empty()) {
return object->ConfigureFromMap(config_options, opts);
}
} else if (!opts.empty()) { // No object but no map. This is OK
return Status::InvalidArgument("Cannot configure null object ", id);
}
return Status::OK();
}
//*******************************************************************************
//
// Methods for Converting Options into strings
//
//*******************************************************************************
Status Configurable::GetOptionString(const ConfigOptions& config_options,
std::string* result) const {
assert(result);
result->clear();
#ifndef ROCKSDB_LITE
return ConfigurableHelper::SerializeOptions(config_options, *this, "",
result);
#else
(void)config_options;
return Status::NotSupported("GetOptionString not supported in LITE mode");
#endif // ROCKSDB_LITE
}
#ifndef ROCKSDB_LITE
std::string Configurable::ToString(const ConfigOptions& config_options,
const std::string& prefix) const {
std::string result = SerializeOptions(config_options, prefix);
if (result.empty() || result.find('=') == std::string::npos) {
return result;
} else {
return "{" + result + "}";
}
}
std::string Configurable::SerializeOptions(const ConfigOptions& config_options,
const std::string& header) const {
std::string result;
Status s = ConfigurableHelper::SerializeOptions(config_options, *this, header,
&result);
assert(s.ok());
return result;
}
Status Configurable::GetOption(const ConfigOptions& config_options,
const std::string& name,
std::string* value) const {
return ConfigurableHelper::GetOption(config_options, *this,
GetOptionName(name), value);
}
Status ConfigurableHelper::GetOption(const ConfigOptions& config_options,
const Configurable& configurable,
const std::string& short_name,
std::string* value) {
// Look for option directly
assert(value);
value->clear();
std::string opt_name;
void* opt_ptr = nullptr;
const auto opt_info =
FindOption(configurable.options_, short_name, &opt_name, &opt_ptr);
if (opt_info != nullptr) {
ConfigOptions embedded = config_options;
embedded.delimiter = ";";
if (short_name == opt_name) {
return opt_info->Serialize(embedded, opt_name, opt_ptr, value);
} else if (opt_info->IsStruct()) {
return opt_info->Serialize(embedded, opt_name, opt_ptr, value);
} else if (opt_info->IsConfigurable()) {
auto const* config = opt_info->AsRawPointer<Configurable>(opt_ptr);
if (config != nullptr) {
return config->GetOption(embedded, opt_name, value);
}
}
}
return Status::NotFound("Cannot find option: ", short_name);
}
Status ConfigurableHelper::SerializeOptions(const ConfigOptions& config_options,
const Configurable& configurable,
const std::string& prefix,
std::string* result) {
assert(result);
for (auto const& opt_iter : configurable.options_) {
for (const auto& map_iter : *(opt_iter.type_map)) {
const auto& opt_name = map_iter.first;
const auto& opt_info = map_iter.second;
if (opt_info.ShouldSerialize()) {
std::string value;
Status s;
if (!config_options.mutable_options_only) {
s = opt_info.Serialize(config_options, prefix + opt_name,
opt_iter.opt_ptr, &value);
} else if (opt_info.IsMutable()) {
ConfigOptions copy = config_options;
copy.mutable_options_only = false;
s = opt_info.Serialize(copy, prefix + opt_name, opt_iter.opt_ptr,
&value);
} else if (opt_info.IsConfigurable()) {
// If it is a Configurable and we are either printing all of the
// details or not printing only the name, this option should be
// included in the list
if (config_options.IsDetailed() ||
!opt_info.IsEnabled(OptionTypeFlags::kStringNameOnly)) {
s = opt_info.Serialize(config_options, prefix + opt_name,
opt_iter.opt_ptr, &value);
}
}
if (!s.ok()) {
return s;
} else if (!value.empty()) {
// <prefix><opt_name>=<value><delimiter>
result->append(prefix + opt_name + "=" + value +
config_options.delimiter);
}
}
}
}
return Status::OK();
}
#endif // ROCKSDB_LITE
//********************************************************************************
//
// Methods for listing the options from Configurables
//
//********************************************************************************
#ifndef ROCKSDB_LITE
Status Configurable::GetOptionNames(
const ConfigOptions& config_options,
std::unordered_set<std::string>* result) const {
assert(result);
return ConfigurableHelper::ListOptions(config_options, *this, "", result);
}
Status ConfigurableHelper::ListOptions(
const ConfigOptions& config_options, const Configurable& configurable,
const std::string& prefix, std::unordered_set<std::string>* result) {
Status status;
for (auto const& opt_iter : configurable.options_) {
for (const auto& map_iter : *(opt_iter.type_map)) {
const auto& opt_name = map_iter.first;
const auto& opt_info = map_iter.second;
// If the option is no longer used in rocksdb and marked as deprecated,
// we skip it in the serialization.
if (!opt_info.IsDeprecated() && !opt_info.IsAlias()) {
if (!config_options.mutable_options_only) {
result->emplace(prefix + opt_name);
} else if (opt_info.IsMutable()) {
result->emplace(prefix + opt_name);
}
}
}
}
return status;
}
#endif // ROCKSDB_LITE
//*******************************************************************************
//
// Methods for Comparing Configurables
//
//*******************************************************************************
bool Configurable::AreEquivalent(const ConfigOptions& config_options,
const Configurable* other,
std::string* name) const {
assert(name);
name->clear();
if (this == other || config_options.IsCheckDisabled()) {
return true;
} else if (other != nullptr) {
#ifndef ROCKSDB_LITE
return ConfigurableHelper::AreEquivalent(config_options, *this, *other,
name);
#else
return true;
#endif // ROCKSDB_LITE
} else {
return false;
}
}
#ifndef ROCKSDB_LITE
bool Configurable::OptionsAreEqual(const ConfigOptions& config_options,
const OptionTypeInfo& opt_info,
const std::string& opt_name,
const void* const this_ptr,
const void* const that_ptr,
std::string* mismatch) const {
if (opt_info.AreEqual(config_options, opt_name, this_ptr, that_ptr,
mismatch)) {
return true;
} else if (opt_info.AreEqualByName(config_options, opt_name, this_ptr,
that_ptr)) {
*mismatch = "";
return true;
} else {
return false;
}
}
bool ConfigurableHelper::AreEquivalent(const ConfigOptions& config_options,
const Configurable& this_one,
const Configurable& that_one,
std::string* mismatch) {
assert(mismatch != nullptr);
for (auto const& o : this_one.options_) {
const auto this_offset = this_one.GetOptionsPtr(o.name);
const auto that_offset = that_one.GetOptionsPtr(o.name);
if (this_offset != that_offset) {
if (this_offset == nullptr || that_offset == nullptr) {
return false;
} else {
for (const auto& map_iter : *(o.type_map)) {
const auto& opt_info = map_iter.second;
if (config_options.IsCheckEnabled(opt_info.GetSanityLevel())) {
if (!config_options.mutable_options_only) {
if (!this_one.OptionsAreEqual(config_options, opt_info,
map_iter.first, this_offset,
that_offset, mismatch)) {
return false;
}
} else if (opt_info.IsMutable()) {
ConfigOptions copy = config_options;
copy.mutable_options_only = false;
if (!this_one.OptionsAreEqual(copy, opt_info, map_iter.first,
this_offset, that_offset,
mismatch)) {
return false;
}
}
}
}
}
}
}
return true;
}
#endif // ROCKSDB_LITE
Status ConfigurableHelper::GetOptionsMap(
const std::string& value, const Customizable* customizable, std::string* id,
std::unordered_map<std::string, std::string>* props) {
if (customizable != nullptr) {
return GetOptionsMap(value, customizable->GetId(), id, props);
} else {
return GetOptionsMap(value, "", id, props);
}
}
Status ConfigurableHelper::GetOptionsMap(
const std::string& value, const std::string& default_id, std::string* id,
std::unordered_map<std::string, std::string>* props) {
assert(id);
assert(props);
Status status;
if (value.empty() || value == kNullptrString) {
*id = default_id;
} else if (value.find('=') == std::string::npos) {
*id = value;
#ifndef ROCKSDB_LITE
} else {
status = StringToMap(value, props);
if (status.ok()) {
auto iter = props->find(ConfigurableHelper::kIdPropName);
if (iter != props->end()) {
*id = iter->second;
props->erase(iter);
} else if (default_id.empty()) { // Should this be an error??
status = Status::InvalidArgument("Name property is missing");
} else {
*id = default_id;
}
}
#else
} else {
*id = value;
props->clear();
#endif
}
return status;
}
} // namespace ROCKSDB_NAMESPACE
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