| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include "kudu/util/flag_validators.h" |
| |
| #include <string> |
| |
| #include "kudu/gutil/map-util.h" |
| #include "kudu/gutil/singleton.h" |
| |
| using std::string; |
| |
| namespace kudu { |
| namespace flag_validation_internal { |
| |
| // A singleton registry for storing group flag validators. |
| class FlagValidatorRegistry { |
| public: |
| static FlagValidatorRegistry* GetInstance() { |
| return Singleton<FlagValidatorRegistry>::get(); |
| } |
| |
| void Register(const string& name, const FlagValidator& func) { |
| InsertOrDie(&validators_, name, func); |
| } |
| |
| const FlagValidatorsMap& validators() { |
| return validators_; |
| } |
| |
| private: |
| friend class Singleton<FlagValidatorRegistry>; |
| FlagValidatorRegistry() {} |
| |
| FlagValidatorsMap validators_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FlagValidatorRegistry); |
| }; |
| |
| |
| Registrator::Registrator(const char* name, const FlagValidator& validator) { |
| FlagValidatorRegistry::GetInstance()->Register(name, validator); |
| } |
| |
| } // namespace flag_validation_internal |
| |
| |
| const FlagValidatorsMap& GetFlagValidators() { |
| using flag_validation_internal::FlagValidatorRegistry; |
| return FlagValidatorRegistry::GetInstance()->validators(); |
| } |
| |
| } // namespace kudu |