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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* Licensed 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.dao.util;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import org.onap.appc.configuration.Configuration;
import org.onap.appc.configuration.ConfigurationFactory;
import org.onap.appc.dao.util.api.DBConnectionPoolService;
import org.onap.appc.dao.util.dbcp.DBConnectionPool;
import org.onap.appc.dao.util.exception.DBConnectionPoolException;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Map;
/**
* This class implements
*
* @see org.onap.appc.dao.util.dbcp.DBConnectionPool
* that provides concrete implemenation of accessing appc database which basic setup
* data would be got from global configuration.
* @see org.onap.appc.configuration.Configuration
* <p>
* The singleton instance of this class has been instantiated by blueprint.
* An example is shown in the {@link DBConnectionPoolService}
*/
public class AppcDatabaseConnectionPool implements DBConnectionPoolService {
enum PropertyPattern {
DBURL("org.onap.appc.db.url.%s"),
USERNAME("org.onap.appc.db.user.%s"),
PASSWORD("org.onap.appc.db.pass.%s"),
DRIVER("org.onap.appc.db.jdbc.driver");
private String pattern;
PropertyPattern(String pattern) {
this.pattern = pattern;
}
public String getPattern() {
return pattern;
}
}
private final EELFLogger logger = EELFManager.getInstance().getLogger(AppcDatabaseConnectionPool.class);
private DBConnectionPool dbConnectionPool;
private String dbName;
public AppcDatabaseConnectionPool() {
// do nothing
}
public AppcDatabaseConnectionPool(String dbUrl, String userName, String password, String jdbcDriver) {
dbConnectionPool = new DBConnectionPool(dbUrl, userName, password, jdbcDriver);
}
/**
* Injected by blueprint
*
* @param dbName
*/
public void setDbName(String dbName) {
this.dbName = dbName;
}
/**
* Bean init method used by blueprint
*/
public void init() {
Configuration configuration = ConfigurationFactory.getConfiguration();
String dbUrl = getConnectionProperty(configuration, PropertyPattern.DBURL);
String userName = getConnectionProperty(configuration, PropertyPattern.USERNAME);
String password = getConnectionProperty(configuration, PropertyPattern.PASSWORD);
String jdbcDriver = getJDBCDriver(configuration);
dbConnectionPool = new DBConnectionPool(dbUrl, userName, password, jdbcDriver);
// a simple health check
Connection connection = null;
try {
connection = dbConnectionPool.getConnection();
} catch (DBConnectionPoolException e) {
logger.error("DB connection pool is created failed." +
"Please make sure the provided information is correct.");
}
if (connection != null) {
try {
connection.close();
} catch (SQLException e) {
logger.error("DB connection cannot be closed:", e.getMessage());
}
}
}
/**
* Bean destroy method used by blueprint
*/
public void destroy() {
if (dbConnectionPool != null) {
dbConnectionPool.shutdown();
}
}
/**
* Get the connection from connection pool.
*
* @return Connection. If the provided db information is not correct,
* the return value might be null.
*/
@Override
public Connection getConnection() throws DBConnectionPoolException {
return dbConnectionPool.getConnection();
}
/**
* Get dbcp status like active_status.
* <p>
* More details about status of DBConnectionPool,
* go check {@link org.onap.appc.dao.util.dbcp.DBConnectionPool#getDataSourceStatus()}
*
* @return a map contains some dbcp information.
*/
@Override
public Map<String, Integer> getDataSourceStatus() {
return dbConnectionPool.getDataSourceStatus();
}
private String getConnectionProperty(Configuration configuration, PropertyPattern propertyPattern) {
String property = configuration.getProperty(String.format(propertyPattern.getPattern(), dbName), "");
return property;
}
private String getJDBCDriver(Configuration configuration) {
return configuration.getProperty(PropertyPattern.DRIVER.getPattern(), "");
}
}
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