mirror of https://github.com/apache/cloudstack.git
81 lines
2.4 KiB
Java
81 lines
2.4 KiB
Java
/*
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* Copyright (C) 2011 Citrix Systems, Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.cloud.bridge.persist.dao;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.Properties;
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import org.apache.log4j.Logger;
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import com.cloud.bridge.util.ConfigurationHelper;
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public class CloudStackDao extends BaseDao {
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public static final Logger logger = Logger.getLogger(CloudStackDao.class);
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private Connection conn = null;
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public CloudStackDao() {
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}
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public String getConfigValue( String configName ){
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String value = null;
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try {
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openConnection();
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PreparedStatement statement = conn.prepareStatement ( "SELECT value FROM `cloud`.`configuration` where name = ?" );
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statement.setString( 1, configName );
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statement.executeQuery();
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ResultSet rs = statement.getResultSet ();
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if (rs.next()) {
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value = rs.getString(1);
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}
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}catch (Exception e) {
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logger.warn("Failed to access CloudStack DB, got error: ", e);
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} finally {
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try{
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closeConnection();
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}catch(SQLException e){
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}
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}
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return value;
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}
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private void openConnection()
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throws InstantiationException, IllegalAccessException, ClassNotFoundException, SQLException {
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if (null == conn) {
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Class.forName( "com.mysql.jdbc.Driver" ).newInstance();
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conn = DriverManager.getConnection( "jdbc:mysql://" + dbHost + ":" + dbPort + "/" + cloud_dbName, dbUser, dbPassword );
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}
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}
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private void closeConnection() throws SQLException {
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if (null != conn) conn.close();
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conn = null;
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}
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}
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