database.h

来自「a open source project in linux for peer 」· C头文件 代码 · 共 48 行

#ifndef DATABASE_H_
#define DATABASE_H_

/*
 * Class for storing key value pairs
 * 
 * It will use the KadC library and the KadCppApi C++ wrapper around it,
 * It implements the singleton interface, 
 */

#include "Logger.h"
#include "KadCppApi.h"
#include <string>
 
class Database {
	
  public:
  	// Obtains the singleton instance.
	static Database* getInstance();
	// Closes the singleton instance.
	static void close();
	// Searches for a key.
	const std::string get(const std::string& key);
	// Adds a key-value pair to the database.
	int put(const std::string& key, const std::string& value);
	
  private: 
    // Constants
 	/* Min number of knodes to wait for till initialized. */
 	const static int INIT_KNODES_COUNT = 20;
  
  	// Fields
 	static Database* instance;
 	KadCppApi* api;
 	Logger* log;
	
	// Constructors & destructor
 	Database();
 	Database(const Database&);
	virtual ~Database();
 	
 	// Private methods
 	void init();
};

#endif /*DATABASE_H_*/