emsApplication/applications/ems_datahubs/opmysql.cpp

#include "opmysql.h"
#include <mysql_driver.h>
#include <mysql_connection.h>
#include <cppconn/prepared_statement.h>
#include <cppconn/resultset.h>
#include <cppconn/statement.h>
#include <cppconn/exception.h>
#include <hv/hlog.h>
#include <sstream>  
#include "openjson.h"

OpDatabase OpDatabase::m_instance;

OpDatabase::OpDatabase()
	:m_pDbConnection(nullptr)
{
}

OpDatabase::~OpDatabase()
{
	//CloseDatabase();
}

OpDatabase* OpDatabase::getInstance()
{
	return &m_instance;
}

bool OpDatabase::OpenDatabase(const std::string& server, const std::string& dbuser, const std::string& database)
{
	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>
	try
	{
		// <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		//std::string server = "tcp://127.0.0.1:3306";
		//std::string dbuser = "root";
		std::string password = "Hj57471000";
		//std::string database = "hjems";

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		sql::mysql::MySQL_Driver* driver;
		driver = sql::mysql::get_mysql_driver_instance();
		//m_pDbConnection.reset(driver->connect(server, dbuser, password));
		m_pDbConnection = driver->connect(server, dbuser, password);

		if (!m_pDbConnection)
		{
			hloge("Failed to connect to database.");
			return false;
		}

		// <20><><EFBFBD><EFBFBD>Ϊʹ<CEAA><CAB9>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD>
		m_pDbConnection->setSchema(database);

		return true;
	}
	catch (sql::SQLException& e)
	{
		std::ostringstream ss;
		ss << "SQLException: " << e.what();
		ss<< " (MySQL error code: " << e.getErrorCode();
		ss << ", SQLState: " << e.getSQLState() << " )";
		hloge("Failed to connect to database: %s",ss.str().c_str());
		return false;
	}
}

// <20>ر<EFBFBD><D8B1><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>
void OpDatabase::CloseDatabase()
{
	m_pDbConnection->close();
	//delete m_pDbConnection;
}


void OpDatabase::InsertMessage(const std::string& ts, const std::string& msg_type, const std::string& fsu, const std::string& content, int topic, int dev_id)
{
	const char* insertSql = "INSERT INTO tbl_data (data_timestamp, data_type, FsuCode, data_content, topic, device_id) VALUES (?,?,?,?,?,?);";
	// <20><><EFBFBD><EFBFBD>Ԥ<EFBFBD><D4A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>prepared statement
	std::unique_ptr<sql::PreparedStatement> insertStmt(m_pDbConnection->prepareStatement(insertSql));

	// <20>󶨲<EFBFBD><F3B6A8B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵIJ<DDB5><C4B2><EFBFBD>
	insertStmt->setString(1, ts);
	insertStmt->setString(2, msg_type);
	insertStmt->setString(3, fsu);
	insertStmt->setString(4, content);
	insertStmt->setInt(5, topic);
	insertStmt->setInt(6, dev_id);

	// ִ<>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	int rowsAffected = insertStmt->executeUpdate();

	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>ɹ<EFBFBD>
	if (rowsAffected > 0)
	{
		hlogi( "New message inserted successfully." );
	}
	else
	{
		hloge( "No rows affected during insert operation." );
	}
}