Glassfish example source code file (LoadBalancerConfigUpgrade.java)

This example Glassfish source code file (LoadBalancerConfigUpgrade.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 - Glassfish tags/keywords

bean, device_admin_port_property, device_host_property, device_host_property, deviceportnotfound, javabean, list, loadbalancerconfigcode, log, logging, override, postconstruct, property, property, string, string, transactionfailure, transactionfailure, util

The Glassfish LoadBalancerConfigUpgrade.java source code

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 *
 * Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
 *
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 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
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 * enclosed by brackets [] replaced by your own identifying information:
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 * and therefore, elected the GPL Version 2 license, then the option applies
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package org.glassfish.loadbalancer.upgrade;

import java.beans.PropertyVetoException;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.api.admin.config.ConfigurationUpgrade;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.LoadBalancer;
import com.sun.enterprise.config.serverbeans.LoadBalancers;

import org.jvnet.hk2.annotations.Inject;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.component.PostConstruct;
import org.jvnet.hk2.config.TransactionFailure;
import org.jvnet.hk2.config.types.Property;

import java.util.List;
import org.glassfish.loadbalancer.admin.cli.LbLogUtil;
import org.jvnet.hk2.config.ConfigSupport;
import org.jvnet.hk2.config.SingleConfigCode;

/**
 *
 * Upgrade load-balancer config from v2 to v3
 * 
 * @author Kshitiz Saxena
 */
@Service(name = "loadbalancerConfigUpgrade")
public class LoadBalancerConfigUpgrade implements PostConstruct,
        ConfigurationUpgrade {

    @Inject
    Domain domain;
    public static final String DEVICE_HOST_PROPERTY = "device-host";
    public static final String DEVICE_ADMIN_PORT_PROPERTY = "device-admin-port";

    @Override
    public void postConstruct() {
        updateLoadBalancerElements();
    }

    private void updateLoadBalancerElements() {
        LoadBalancers loadBalancers = domain.getLoadBalancers();
        List<LoadBalancer> loadBalancerList =
                loadBalancers.getLoadBalancer();

        for (LoadBalancer loadBalancer : loadBalancerList) {
            try {
                ConfigSupport.apply(new LoadBalancerConfigCode(), loadBalancer);
            } catch (TransactionFailure ex) {
                String msg = LbLogUtil.getStringManager().getString(
                        "ErrorDuringUpgrade", loadBalancer.getName(),
                        ex.getMessage());
                Logger.getAnonymousLogger().log(Level.SEVERE, msg);
                if (Logger.getAnonymousLogger().isLoggable(Level.FINE)) {
                    Logger.getAnonymousLogger().log(Level.FINE,
                            "Exception during upgrade operation", ex);
                }
            }
        }
    }

    private class LoadBalancerConfigCode implements
            SingleConfigCode<LoadBalancer> {

        @Override
        public Object run(LoadBalancer loadBalancer) throws
                PropertyVetoException, TransactionFailure {
            List<Property> propertyList = loadBalancer.getProperty();
            Property deviceHostProperty = loadBalancer.getProperty(
                    DEVICE_HOST_PROPERTY);
            if (deviceHostProperty != null) {
                propertyList.remove(deviceHostProperty);
                loadBalancer.setDeviceHost(deviceHostProperty.getValue());
            } else {
                String msg = LbLogUtil.getStringManager().getString(
                        "DeviceHostNotFound", loadBalancer.getName());
                Logger.getAnonymousLogger().log(Level.SEVERE, msg);
                loadBalancer.setDeviceHost("localhost");
            }

            Property devicePortProperty = loadBalancer.getProperty(
                    DEVICE_ADMIN_PORT_PROPERTY);
            if (devicePortProperty != null) {
                propertyList.remove(devicePortProperty);
                loadBalancer.setDevicePort(devicePortProperty.getValue());
            } else {
                String msg = LbLogUtil.getStringManager().getString(
                        "DevicePortNotFound", loadBalancer.getName());
                Logger.getAnonymousLogger().log(Level.SEVERE, msg);
                loadBalancer.setDevicePort("443");
            }

            String autoApplyEnabled = loadBalancer.getAutoApplyEnabled();
            if (autoApplyEnabled != null) {
                loadBalancer.setAutoApplyEnabled(null);
                if (Boolean.parseBoolean(autoApplyEnabled)) {
                    String msg = LbLogUtil.getStringManager().getString(
                            "AutoApplyEnabled", loadBalancer.getName());
                    Logger.getAnonymousLogger().log(Level.WARNING, msg);
                }
            }
            return loadBalancer;
        }
    }
}