Glassfish example source code file (CreateHTTPLoadBalancerCommand.java)

This example Glassfish source code file (CreateHTTPLoadBalancerCommand.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, boolean, boolean, commandexception, configurelbweightcommand, inject, inject, javabean, load, log, logging, object, param, param, property, string, string, transactionfailure, util

The Glassfish CreateHTTPLoadBalancerCommand.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.
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 * file and include the License file at packager/legal/LICENSE.txt.
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package org.glassfish.loadbalancer.admin.cli;

import java.util.logging.Logger;
import java.util.Properties;

import java.beans.PropertyVetoException;

import org.jvnet.hk2.annotations.*;
import org.jvnet.hk2.component.*;
import org.jvnet.hk2.config.*;
import org.jvnet.hk2.config.types.Property;
import org.glassfish.api.Param;
import org.glassfish.api.I18n;
import org.glassfish.api.ActionReport;
import com.sun.enterprise.util.LocalStringManagerImpl;
import org.glassfish.internal.api.Target;

import com.sun.enterprise.config.serverbeans.LoadBalancers;
import com.sun.enterprise.config.serverbeans.LoadBalancer;
import com.sun.enterprise.config.serverbeans.Applications;

import org.glassfish.api.admin.*;
import org.glassfish.config.support.TargetType;
import org.glassfish.config.support.CommandTarget;

import org.glassfish.api.admin.CommandRunner.CommandInvocation;

/**
  * This method supports the create-http-lb CLI command. It creates a lb-config, cluster-ref, health-checker by using
  * the given parameters.
  * @param loadbalancername the name for the load-balancer element that will be created
  * @param target cluster-ref or server-ref parameter of lb-config
  * @param options Map of option name and option value. The valid options are
  *          responsetimeout response-timeout-in-seconds attribute of lb-config
  *          httpsrouting https-routing parameter of lb-config
  *          reloadinterval reload-poll-interval-in-seconds parameter of lb-config
  *          monitor monitoring-enabled parameter of lb-config
  *          routecookie route-cookie-enabled parameter of lb-config
  *          lb-policy load balancing policy to be used for the cluster target
  *          lb-policy-module specifies the path to the shared library implementing the user-defined policy
  *          healthcheckerurl url attribute of health-checker
  *          healthcheckerinterval interval-in-seconds parameter of health-checker
  *          healthcheckertimeout timeout-in-seconds parameter of health-checker
  * @author Yamini K B
  */
@Service(name = "create-http-lb")
@Scoped(PerLookup.class)
@I18n("create.http.lb")
@TargetType(value={CommandTarget.STANDALONE_INSTANCE, CommandTarget.CLUSTER})
@org.glassfish.api.admin.ExecuteOn({RuntimeType.DAS})
public final class CreateHTTPLoadBalancerCommand extends LBCommandsBase
        implements AdminCommand {

    @Param (optional=false)
    String devicehost;

    @Param (optional=false)
    String deviceport;

    @Param (optional=true)
    String target;

    @Param (optional=true)
    String sslproxyhost;

    @Param (optional=true)
    String sslproxyport;

    @Param (optional=true)
    String lbpolicy;

    @Param (optional=true)
    String lbpolicymodule;

    @Param (optional=true, defaultValue="/")
    String healthcheckerurl;

    @Param (optional=true, defaultValue="30")
    String healthcheckerinterval;

    @Param (optional=true, defaultValue="10")
    String healthcheckertimeout;

    @Param (optional=true)
    String lbenableallinstances;

    @Param (optional=true)
    String lbenableallapplications;

    @Param (optional=true)
    String lbweight;

    @Param (optional=true, defaultValue="60")
    String responsetimeout;

    @Param (optional=true, defaultValue="false")
    Boolean httpsrouting;

    @Param (optional=true, defaultValue="60")
    String reloadinterval;

    @Param (optional=true, defaultValue="false")
    Boolean monitor;

    @Param (optional=true, defaultValue="true")
    Boolean routecookie;

    @Param (obsolete=true, optional=true)
    Boolean autoapplyenabled;

    @Param(optional=true, name="property", separator=':')
    Properties properties;

    @Param (primary=true)
    String load_balancer_name;

    @Inject
    Target tgt;

    @Inject
    Logger logger;

    @Inject
    CommandRunner runner;

    @Inject
    Applications applications;

    private ActionReport report;

    final private static LocalStringManagerImpl localStrings =
        new LocalStringManagerImpl(CreateHTTPLoadBalancerCommand.class);

    
    @Override
    public void execute(AdminCommandContext context) {
        //final Logger logger = context.getLogger();

        report = context.getActionReport();

        report.setActionExitCode(ActionReport.ExitCode.SUCCESS);        

        if (load_balancer_name == null) {
            String msg = localStrings.getLocalString("NullLBName", "Load balancer name cannot be null");
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            return;
        }

        if (domain.getLoadBalancers().getLoadBalancer(load_balancer_name) != null) {
            String msg = localStrings.getLocalString("LBExists", "Load balancer {0} already exists", load_balancer_name);
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            return;
        }

        if (target != null && !tgt.isValid(target)) {
            String msg = localStrings.getLocalString("InvalidTarget", "Invalid target", target);
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            return;
        }

        boolean isCluster = tgt.isCluster(target);
        String lbConfigName = load_balancer_name + "_LB_CONFIG";        
        
        if(!isCluster){
            if((lbpolicy!=null) || (lbpolicymodule!=null)){
                String msg = localStrings.getLocalString("NotCluster",
                        "{0} not a cluster", target);
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage(msg);
                return;
            }
        }

        try {
            createLBConfig(lbConfigName);

            if (target != null) {
                final CreateHTTPLBRefCommand command = (CreateHTTPLBRefCommand)runner
                        .getCommand("create-http-lb-ref", report, context.getLogger());
                command.target = target;
                //command.lbname = load_balancer_name;
                command.config = lbConfigName;
                command.lbpolicy = lbpolicy;
                command.lbpolicymodule = lbpolicymodule;
                command.healthcheckerurl = healthcheckerurl;
                command.healthcheckerinterval = healthcheckerinterval;
                command.healthcheckertimeout = healthcheckertimeout;
                command.lbenableallinstances = lbenableallinstances;
                command.lbenableallapplications = lbenableallapplications;
                command.lbweight = lbweight;
                command.execute(context);
                checkCommandStatus(context);
            }
        } catch (CommandException e) {
            String msg = e.getLocalizedMessage();
            logger.warning(msg);
//                    report.setActionExitCode(ExitCode.FAILURE);
//                    report.setMessage(msg);
//                    return;
        }
        addLoadBalancer(lbConfigName);

        if (isCluster && lbweight != null) {
            try {
                final ConfigureLBWeightCommand command = (ConfigureLBWeightCommand)runner
                        .getCommand("configure-lb-weight", report, context.getLogger());
                command.weights=lbweight;
                command.cluster=target;
                command.execute(context);
                checkCommandStatus(context);
            } catch (CommandException e) {
                String msg = e.getLocalizedMessage();
                logger.warning(msg);
    //                    report.setActionExitCode(ExitCode.FAILURE);
    //                    report.setMessage(msg);
    //                    return;
            }
        }
    }

    private void createLBConfig(String config) throws CommandException {
        CommandInvocation ci = runner.getCommandInvocation("create-http-lb-config", report);
        ParameterMap map = new ParameterMap();
        //map.add("target", target);
        map.add("responsetimeout", responsetimeout);
        map.add("httpsrouting", httpsrouting==null ? null : httpsrouting.toString());
        map.add("reloadinterval", reloadinterval);
        map.add("monitor", monitor==null ? null : monitor.toString());
        map.add("routecookie", routecookie==null ? null : routecookie.toString());
        map.add("name", config);
        ci.parameters(map);
        ci.execute();
    }

   private void addLoadBalancer(final String lbConfigName) {
        try {
            ConfigSupport.apply(new SingleConfigCode<LoadBalancers>() {
                    @Override
                    public Object run(LoadBalancers param) throws PropertyVetoException, TransactionFailure {
                        LoadBalancer lb = param.createChild(LoadBalancer.class);
                        lb.setDeviceHost(devicehost);
                        lb.setDevicePort(deviceport);
                        lb.setLbConfigName(lbConfigName);
                        lb.setName(load_balancer_name);

                        // add properties
                        if (properties != null) {
                            for (Object propname: properties.keySet()) {
                                Property newprop = lb.createChild(Property.class);
                                newprop.setName((String) propname);
                                newprop.setValue(properties.getProperty((String) propname));
                                lb.getProperty().add(newprop);
                            }
                        }

                        if (sslproxyhost != null) {
                            Property newprop = lb.createChild(Property.class);
                            newprop.setName("ssl-proxy-host");
                            newprop.setValue(sslproxyhost);
                            lb.getProperty().add(newprop);
                        }

                        if (sslproxyport != null) {
                            Property newprop = lb.createChild(Property.class);
                            newprop.setName("ssl-proxy-port");
                            newprop.setValue(sslproxyport);
                            lb.getProperty().add(newprop);
                        }
                        param.getLoadBalancer().add(lb);
                        return Boolean.TRUE;
                    }
            }, domain.getLoadBalancers());
        } catch (TransactionFailure ex) {
            String msg = localStrings.getLocalString("FailedToUpdateLB",
                    "Failed to update load-balancers");
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            return;
        }
    }
}