/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package gobblin.source.extractor.extract.jdbc;
import gobblin.tunnel.Tunnel;
import org.apache.commons.dbcp.BasicDataSource;
import java.io.IOException;
import java.sql.SQLException;
/**
* Create JDBC data source
*
* @author nveeramr
*/
public class JdbcProvider extends BasicDataSource {
private Tunnel tunnel;
// If extract type is not provided then consider it as a default type
public JdbcProvider(String driver, String connectionUrl, String user, String password, int numconn, int timeout) {
this.connect(driver, connectionUrl, user, password, numconn, timeout, "DEFAULT", null, -1);
}
public JdbcProvider(String driver, String connectionUrl, String user, String password, int numconn, int timeout,
String type) {
this.connect(driver, connectionUrl, user, password, numconn, timeout, type, null, -1);
}
public JdbcProvider(String driver, String connectionUrl, String user, String password, int numconn, int timeout,
String type, String proxyHost, int proxyPort) {
this.connect(driver, connectionUrl, user, password, numconn, timeout, type, proxyHost, proxyPort);
}
public void connect(String driver, String connectionUrl, String user, String password, int numconn, int timeout,
String type, String proxyHost, int proxyPort) {
if (proxyHost != null && proxyPort > 0) {
String remoteHost = "";
int remotePort = 0;
// TODO make connection Url parsing much more robust -- some connections URLs can have colons and slashes in the
// weirdest places
int hostStart = connectionUrl.indexOf("://") + 3;
int portStart = connectionUrl.indexOf(":", hostStart);
remoteHost = connectionUrl.substring(hostStart, portStart);
remotePort = Integer.decode(connectionUrl.substring(portStart + 1, connectionUrl.indexOf("/", portStart)));
try {
this.tunnel = Tunnel.build(remoteHost, remotePort, proxyHost, proxyPort);
int tunnelPort = this.tunnel.getPort();
//mangle connectionUrl, replace hostname with localhost -- hopefully the hostname is not needed!!!
String newConnectionUrl =
connectionUrl.replaceFirst(remoteHost, "127.0.0.1").replaceFirst(":" + remotePort, ":" + tunnelPort);
connectionUrl = newConnectionUrl;
} catch (IOException ioe) {
throw new IllegalStateException("Failed to open tunnel to remote host " + remoteHost + ":" + remotePort
+ " via proxy " + proxyHost + ":" + proxyPort, ioe);
}
}
this.setDriverClassName(driver);
this.setUsername(user);
this.setPassword(password);
this.setUrl(connectionUrl);
this.setInitialSize(0);
this.setMaxIdle(numconn);
this.setMaxWait(timeout);
}
@Override
public synchronized void close() throws SQLException {
super.close();
if (this.tunnel != null) {
this.tunnel.close();
}
}
}