org.pentaho.di.cluster.SlaveConnectionManager.java Source code

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Here is the source code for org.pentaho.di.cluster.SlaveConnectionManager.java

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/*! ******************************************************************************
 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * 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.
 *
 ******************************************************************************/

package org.pentaho.di.cluster;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;

/**
 * Encapsulates the Apache commons HTTP connection manager with a singleton. We can use this to limit the number of open
 * connections to slave servers.
 *
 * @author matt
 *
 */
public class SlaveConnectionManager {

    private static SlaveConnectionManager slaveConnectionManager;

    private MultiThreadedHttpConnectionManager manager;

    private SlaveConnectionManager() {
        manager = new MultiThreadedHttpConnectionManager();
        manager.getParams().setDefaultMaxConnectionsPerHost(100);
        manager.getParams().setMaxTotalConnections(200);
    }

    public static SlaveConnectionManager getInstance() {
        if (slaveConnectionManager == null) {
            slaveConnectionManager = new SlaveConnectionManager();
        }
        return slaveConnectionManager;
    }

    public HttpClient createHttpClient() {
        return new HttpClient(manager);
    }

    public void shutdown() {
        manager.shutdown();
    }
}