PropertiesRegistry.h

// Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
// SPDX-License-Identifier: BSD-3-Clause-Clear
 
#ifndef PROPERTIES_REGISTRY_H
#define PROPERTIES_REGISTRY_H
 
#include <unordered_map>
#include <string>
#include <system_error>
#include <memory>
#include <shared_mutex>
 
class PropertiesRegistry {
private:
    static std::shared_ptr<PropertiesRegistry> propRegistryInstance;
    std::unordered_map<std::string, std::string> mProperties;
    std::shared_timed_mutex mPropRegistryMutex;
 
    PropertiesRegistry();
 
public:
    ~PropertiesRegistry();
 
    int8_t createProperty(const std::string& propertyName, const std::string& propertyValue);
 
    size_t queryProperty(const std::string& propertyName, std::string& result);
 
    int8_t modifyProperty(const std::string& propertyName, const std::string& propertyValue);
 
    int8_t deleteProperty(const std::string& propertyName);
 
    int32_t getPropertiesCount();
 
    static std::shared_ptr<PropertiesRegistry> getInstance() {
        if(propRegistryInstance == nullptr) {
            std::shared_ptr<PropertiesRegistry> localpropRegistryInstance(new PropertiesRegistry());
            localpropRegistryInstance.swap(propRegistryInstance);
        }
        return propRegistryInstance;
    }
};
 
#endif