ActiveMQ example source code file (ActiveMQConnectionFactoryFactoryBean.java)

This example ActiveMQ source code file (ActiveMQConnectionFactoryFactoryBean.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

activemqconnectionfactory, activemqconnectionfactoryfactorybean, arraylist, arraylist, class, factorybean, list, long, long, object, string, string, stringbuffer, stringbuffer, util

The ActiveMQ ActiveMQConnectionFactoryFactoryBean.java source code

/**
 *
 * 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 org.apache.activemq.spring;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.FactoryBean;

/**
 * A helper class for creating a failover configured {@link ActiveMQConnectionFactory}
 * which supports one or more TCP based hostname/ports which can all be configured in a
 * consistent way without too much URL hacking.
 *
 * 
 */
public class ActiveMQConnectionFactoryFactoryBean implements FactoryBean {
    private List<String> tcpHostAndPorts = new ArrayList();

    // tcp properties
    private Long maxInactivityDuration;
    private String tcpProperties;

    // failover properties
    private Long maxReconnectDelay;
    private String failoverProperties;

    public Object getObject() throws Exception {
        ActiveMQConnectionFactory answer = new ActiveMQConnectionFactory();
        String brokerURL = getBrokerURL();
        answer.setBrokerURL(brokerURL);
        return answer;
    }

    public String getBrokerURL() {
        StringBuffer buffer = new StringBuffer("failover:(");
        int counter = 0;
        for (String tcpHostAndPort : tcpHostAndPorts) {
            if (counter++ > 0) {
                buffer.append(",");
            }
            buffer.append(createTcpHostAndPortUrl(tcpHostAndPort));
        }
        buffer.append(")");

        List<String> parameters = new ArrayList();
        if (maxReconnectDelay != null) {
            parameters.add("maxReconnectDelay=" + maxReconnectDelay);
        }
        if (notEmpty(failoverProperties)) {
            parameters.add(failoverProperties);
        }
        buffer.append(asQueryString(parameters));
        return buffer.toString();
    }

    public Class getObjectType() {
        return ActiveMQConnectionFactory.class;
    }

    public boolean isSingleton() {
        return true;
    }

    // Properties
    //-------------------------------------------------------------------------

    public List<String> getTcpHostAndPorts() {
        return tcpHostAndPorts;
    }

    public void setTcpHostAndPorts(List<String> tcpHostAndPorts) {
        this.tcpHostAndPorts = tcpHostAndPorts;
    }

    public void setTcpHostAndPort(String tcpHostAndPort) {
        tcpHostAndPorts = new ArrayList<String>();
        tcpHostAndPorts.add(tcpHostAndPort);
    }

    public Long getMaxInactivityDuration() {
        return maxInactivityDuration;
    }

    public void setMaxInactivityDuration(Long maxInactivityDuration) {
        this.maxInactivityDuration = maxInactivityDuration;
    }

    public String getTcpProperties() {
        return tcpProperties;
    }

    public void setTcpProperties(String tcpProperties) {
        this.tcpProperties = tcpProperties;
    }

    public Long getMaxReconnectDelay() {
        return maxReconnectDelay;
    }

    public void setMaxReconnectDelay(Long maxReconnectDelay) {
        this.maxReconnectDelay = maxReconnectDelay;
    }

    public String getFailoverProperties() {
        return failoverProperties;
    }

    public void setFailoverProperties(String failoverProperties) {
        this.failoverProperties = failoverProperties;
    }

    // Implementation methods
    //-------------------------------------------------------------------------

    /**
     * Turns a list of query string key=value strings into a query URL string
     * of the form "?a=x&b=y"
     */
    protected String asQueryString(List<String> parameters) {
        int size = parameters.size();
        if (size < 1) {
            return "";
        }
        else {
            StringBuffer buffer = new StringBuffer("?");
            buffer.append(parameters.get(0));
            for (int i = 1; i < size; i++) {
                buffer.append("&");
                buffer.append(parameters.get(i));
            }
            return buffer.toString();
        }
    }

    /**
     * Allows us to add any TCP specific URI configurations
     */
    protected String createTcpHostAndPortUrl(String tcpHostAndPort) {
        List<String> parameters = new ArrayList();
        if (maxInactivityDuration != null) {
            parameters.add("wireFormat.maxInactivityDuration=" + maxInactivityDuration);
        }
        if (notEmpty(tcpProperties)) {
            parameters.add(tcpProperties);
        }
        return tcpHostAndPort + asQueryString(parameters);
    }


    protected boolean notEmpty(String text) {
        return text != null && text.length() > 0;
    }

}