Glassfish example source code file (EnableHTTPLBServerCommand.java)

This example Glassfish source code file (EnableHTTPLBServerCommand.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

failed, failedtoupdateattr, inject, lbconfig, log, logging, param, server, server, serverenabled, serverref, serverref, string, string, transactionfailure, transactionfailure, util

The Glassfish EnableHTTPLBServerCommand.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * 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:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package org.glassfish.loadbalancer.admin.cli;

import java.util.logging.Logger;
import java.util.List;


import org.jvnet.hk2.annotations.*;
import org.jvnet.hk2.component.*;
import org.jvnet.hk2.config.*;
import org.glassfish.api.Param;
import org.glassfish.api.ActionReport;
import com.sun.enterprise.util.LocalStringManagerImpl;
import com.sun.enterprise.config.serverbeans.ServerRef;
import com.sun.enterprise.config.serverbeans.LbConfigs;
import com.sun.enterprise.config.serverbeans.LbConfig;

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

import org.glassfish.internal.api.Target;

/**
 * This is a remote command that enables lb-enabled attribute of
 * server-ref
 * @author Yamini K B
 */
@Service(name = "enable-http-lb-server")
@Scoped(PerLookup.class)
@TargetType(value={CommandTarget.STANDALONE_INSTANCE, CommandTarget.CLUSTER, CommandTarget.CLUSTERED_INSTANCE})
@org.glassfish.api.admin.ExecuteOn(RuntimeType.DAS)
public final class EnableHTTPLBServerCommand extends LBCommandsBase
                                             implements AdminCommand {

    @Param(primary=true)
    String target;

    @Inject
    Target tgt;

    @Inject
    LbConfigs lbconfigs;

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

    @Override
    public void execute(AdminCommandContext context) {
        ActionReport report = context.getActionReport();

        Logger logger = context.getLogger();
        
        report.setActionExitCode(ActionReport.ExitCode.SUCCESS);

        if (tgt.isCluster(target)) {
            //enable all servers in cluster
            updateLBForCluster(report, target, "true", null);
        }  else {
            boolean foundTarget = false;
            List<LbConfig> lbConfigs = lbconfigs.getLbConfig();
            for (LbConfig lc:lbConfigs) {
                //ServerRef  sRef = lc.getServerRefByRef(target);
                ServerRef  sRef = lc.getRefByRef(ServerRef.class, target);
                if (sRef == null) {
                    //log a warning and continue search
                    logger.warning(localStrings.getLocalString("InvalidInstance",
                            "Server {0} does not exist in {1}", target, lc.getName()));
                } else {
                    boolean enabled = sRef.getLbEnabled().equals("true");
                    if (enabled == true) {
                        String msg = localStrings.getLocalString("ServerEnabled",
                                "Server [{0}] is already enabled.", sRef.getRef());
                        report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                        report.setMessage(msg);
                        return;
                    }
                    try {
                        updateLbEnabled(sRef, "true", null);
                    } catch (TransactionFailure ex) {
                        String msg = localStrings.getLocalString("FailedToUpdateAttr",
                            "Failed to update lb-enabled attribute for {0}", target);
                        report.setMessage(msg);
                        report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                        report.setFailureCause(ex);
                        return;
                    }
                    foundTarget = true;
                }
            }
            // did not find server target
            if (!foundTarget) {
                ServerRef sRef = getServerRefFromCluster(report, target);
                if (sRef == null) {
                    String msg = localStrings.getLocalString("InvalidServer",
                            "Server {0} does not exist", target);
                    report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                    report.setMessage(msg);
                    return;
                } else {
                    boolean enabled = sRef.getLbEnabled().equals("true");
                    if (enabled == true) {
                        String msg = localStrings.getLocalString("ServerEnabled",
                                "Server [{0}] is already enabled.", sRef.getRef());
                        report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                        report.setMessage(msg);
                        return;
                    }
                    try {
                        updateLbEnabled(sRef, "true", null);
                    } catch (TransactionFailure ex) {
                        String msg = localStrings.getLocalString("FailedToUpdateAttr",
                            "Failed to update lb-enabled attribute for {0}", target);
                        report.setMessage(msg);
                        report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                        report.setFailureCause(ex);
                        return;
                    }
                }
            }
        }
    }
}