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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/customizable.h"
#include <sstream>
#include "options/options_helper.h"
#include "port/port.h"
#include "rocksdb/convenience.h"
#include "rocksdb/status.h"
#include "rocksdb/utilities/options_type.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
std::string Customizable::GetOptionName(const std::string& long_name) const {
const std::string& name = Name();
size_t name_len = name.size();
if (long_name.size() > name_len + 1 &&
long_name.compare(0, name_len, name) == 0 &&
long_name.at(name_len) == '.') {
return long_name.substr(name_len + 1);
} else {
return Configurable::GetOptionName(long_name);
}
}
std::string Customizable::GenerateIndividualId() const {
std::ostringstream ostr;
ostr << Name() << "@" << static_cast<const void*>(this) << "#"
<< port::GetProcessID();
return ostr.str();
}
#ifndef ROCKSDB_LITE
Status Customizable::GetOption(const ConfigOptions& config_options,
const std::string& opt_name,
std::string* value) const {
if (opt_name == OptionTypeInfo::kIdPropName()) {
*value = GetId();
return Status::OK();
} else {
return Configurable::GetOption(config_options, opt_name, value);
}
}
std::string Customizable::SerializeOptions(const ConfigOptions& config_options,
const std::string& prefix) const {
std::string result;
std::string parent;
std::string id = GetId();
if (!config_options.IsShallow() && !id.empty()) {
parent = Configurable::SerializeOptions(config_options, "");
}
if (parent.empty()) {
result = id;
} else {
result.append(prefix);
result.append(OptionTypeInfo::kIdPropName());
result.append("=");
result.append(id);
result.append(config_options.delimiter);
result.append(parent);
}
return result;
}
#endif // ROCKSDB_LITE
bool Customizable::AreEquivalent(const ConfigOptions& config_options,
const Configurable* other,
std::string* mismatch) const {
if (config_options.sanity_level > ConfigOptions::kSanityLevelNone &&
this != other) {
const Customizable* custom = reinterpret_cast<const Customizable*>(other);
if (custom == nullptr) { // Cast failed
return false;
} else if (GetId() != custom->GetId()) {
*mismatch = OptionTypeInfo::kIdPropName();
return false;
} else if (config_options.sanity_level >
ConfigOptions::kSanityLevelLooselyCompatible) {
bool matches =
Configurable::AreEquivalent(config_options, other, mismatch);
return matches;
}
}
return true;
}
Status Customizable::GetOptionsMap(
const ConfigOptions& config_options, const Customizable* customizable,
const std::string& value, std::string* id,
std::unordered_map<std::string, std::string>* props) {
Status status;
if (value.empty() || value == kNullptrString) {
*id = "";
props->clear();
} else if (customizable != nullptr) {
status =
Configurable::GetOptionsMap(value, customizable->GetId(), id, props);
#ifdef ROCKSDB_LITE
(void)config_options;
#else
if (status.ok() && customizable->IsInstanceOf(*id)) {
// The new ID and the old ID match, so the objects are the same type.
// Try to get the existing options, ignoring any errors
ConfigOptions embedded = config_options;
embedded.delimiter = ";";
std::string curr_opts;
if (customizable->GetOptionString(embedded, &curr_opts).ok()) {
std::unordered_map<std::string, std::string> curr_props;
if (StringToMap(curr_opts, &curr_props).ok()) {
props->insert(curr_props.begin(), curr_props.end());
}
}
}
#endif // ROCKSDB_LITE
} else {
status = Configurable::GetOptionsMap(value, "", id, props);
}
return status;
}
Status Customizable::ConfigureNewObject(
const ConfigOptions& config_options, Customizable* object,
const std::unordered_map<std::string, std::string>& opt_map) {
Status status;
if (object != nullptr) {
status = object->ConfigureFromMap(config_options, opt_map);
} else if (!opt_map.empty()) {
status = Status::InvalidArgument("Cannot configure null object ");
}
return status;
}
} // namespace ROCKSDB_NAMESPACE
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