Glassfish example source code file (DeleteHTTPLBRefCommand.java)

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Java - Glassfish tags/keywords

bean, clusterref, failed, inject, javabean, lb, lb, lbconfig, log, logging, override, param, server, server, string, string, transactionfailure, transactionfailure, util

The Glassfish DeleteHTTPLBRefCommand.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
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package org.glassfish.loadbalancer.admin.cli;

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

import java.beans.PropertyVetoException;

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 org.glassfish.internal.api.Target;

import com.sun.enterprise.config.serverbeans.ApplicationRef;
import com.sun.enterprise.config.serverbeans.ClusterRef;
import com.sun.enterprise.config.serverbeans.ServerRef;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.Cluster;
import com.sun.enterprise.config.serverbeans.LbConfigs;
import com.sun.enterprise.config.serverbeans.LbConfig;
import com.sun.enterprise.config.serverbeans.LoadBalancer;

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

/**
 *
 * This is a remote command that supports the delete-http-lb-ref CLI command.
 * 
 * @author Yamini K B
 */
@Service(name = "delete-http-lb-ref")
@Scoped(PerLookup.class)
@TargetType(value={CommandTarget.STANDALONE_INSTANCE, CommandTarget.CLUSTER})
@org.glassfish.api.admin.ExecuteOn(RuntimeType.DAS)
public final class DeleteHTTPLBRefCommand extends LBCommandsBase
        implements AdminCommand {

    @Param(optional=false)
    String config;

    @Param(optional=true)
    String lbname;

    @Param(optional=true, defaultValue = "false")
    String force;

    @Param(primary=true)
    String target;

    @Inject
    LbConfigs lbconfigs;

    @Inject
    Target tgt;

    @Inject
    Logger logger;

    private ActionReport report;

    final private static LocalStringManagerImpl localStrings =
        new LocalStringManagerImpl(CreateHTTPLBRefCommand.class);
    
    @Override
    public void execute(AdminCommandContext context) {

        report = context.getActionReport();

        report.setActionExitCode(ActionReport.ExitCode.SUCCESS);

        boolean isCluster = tgt.isCluster(target);

        logger.fine("[LB-ADMIN] deleteLBRef called for target " + target);

        if (config!=null && lbname!=null) {
            String msg = localStrings.getLocalString("EitherConfigOrLBName",
                    "Either LB name or LB config name, not both");
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            return;
        }

        if (config != null) {
            if (lbconfigs.getLbConfig(config) == null) {
                String msg = localStrings.getLocalString("LbConfigDoesNotExist",
                        "Specified LB config {0} does not exist", config);
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage(msg);
                return;
            }
        } else if (lbname != null) {
            LoadBalancer lb = domain.getLoadBalancers().getLoadBalancer(lbname);
            config = lb.getLbConfigName();
        }

        // target is a cluster
        if (isCluster) {
            deleteClusterFromLBConfig(config, target);
            String msg = localStrings.getLocalString("http_lb_admin.DeleteClusterFromConfig",
                    "Deleted cluster {0} from Lb", target, config);
            logger.info(msg);

        // target is a server
        } else if (domain.isServer(target)) {
            deleteServerFromLBConfig(config, target);
            String msg = localStrings.getLocalString("http_lb_admin.DeleteServerFromConfig",
                    "Deleted server {0} from Lb", target, config);
            logger.info(msg);
        } else {
            String msg = localStrings.getLocalString("InvalidTarget", "Invalid target", target);
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            return;
        }
    }

    private void deleteServerFromLBConfig(String configName,String serverName) {
        LbConfig lbConfig = lbconfigs.getLbConfig(configName);

        ServerRef  sRef = lbConfig.getRefByRef(ServerRef.class, serverName);
        if (sRef == null) {
            // does not exist, just return from here
            String msg = localStrings.getLocalString("ServerNotDefined",
                        "Server {0} cannot be used as target", target);
            logger.finest(" server " + serverName +
                    " does not exist in any cluster in the domain");
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            return;
        }
        if (!Boolean.parseBoolean(force)) {
            if (Boolean.parseBoolean(sRef.getLbEnabled())) {
                String msg = localStrings.getLocalString("ServerNeedsToBeDisabled",
                        "Server [{0}] needs to be disabled before it can be removed from the load balancer.",
                        serverName);
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage(msg);
                return;
            }
            // check if its applications are LB disabled.
            Server s = domain.getServerNamed(serverName);

            if (s == null ) {
                String msg = localStrings.getLocalString("ServerNotDefined",
                            "Server {0} cannot be used as target", target);
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage(msg);
                return;
            }
            List<ApplicationRef> appRefs = domain.getApplicationRefsInTarget(target);

            if (appRefs == null  || appRefs.size() == 0 ) {
                String msg = localStrings.getLocalString("AppRefsNotDefined",
                        "Application refs does not exist in server {0}", target);
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage(msg);
                return;
            }
            boolean appLbEnabled = false;
            for(ApplicationRef aRef:appRefs) {
                if(Boolean.parseBoolean(aRef.getLbEnabled())) {
                    appLbEnabled = true;
                    break;
                }
            }

            if (appLbEnabled) {
                String msg = localStrings.getLocalString("AppsNotDisabled",
                        "All referenced applications must be disabled in LB");
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage(msg);
                return;
            }
        }

        removeServerRef(lbConfig, sRef);
    }

    private void deleteClusterFromLBConfig(String configName, String clusterName) {
        LbConfig lbConfig = lbconfigs.getLbConfig(configName);

        ClusterRef cRef = lbConfig.getRefByRef(ClusterRef.class, clusterName);
        if (cRef == null) {
            // does not exist, just return from here
            return;
        }

        if (!Boolean.parseBoolean(force)) {
            Cluster c = domain.getClusterNamed(clusterName);
            if ( c == null ) {
                String msg = localStrings.getLocalString("ClusterNotDefined",
                            "Cluster {0} cannot be used as target", target);
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage(msg);
                return;
            }

            List<ServerRef> sRefs = c.getServerRef();
            boolean refLbEnabled = false;
            for(ServerRef ref:sRefs) {
                if(Boolean.parseBoolean(ref.getLbEnabled())) {
                    refLbEnabled = true;
                }
            }

            if (refLbEnabled) {
                String msg = localStrings.getLocalString("ServerNeedsToBeDisabled",
                        "Server [{0}] needs to be disabled before it can be removed from the load balancer.", target);
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage(msg);
                return;
            }
        }
        removeClusterRef(lbConfig, cRef);
    }

    public void removeServerRef(final LbConfig lc, final ServerRef sRef) {
        try {
            ConfigSupport.apply(new SingleConfigCode<LbConfig>() {
                    @Override
                    public Object run(LbConfig param) throws PropertyVetoException, TransactionFailure {
                        param.getClusterRefOrServerRef().remove(sRef);
                        return Boolean.TRUE;
                    }
            }, lc);
        } catch (TransactionFailure ex) {
            String msg = localStrings.getLocalString("FailedToRemoveServerRef", "Failed to remove server-ref");
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            report.setFailureCause(ex);
            return;
        }
    }

    public void removeClusterRef(final LbConfig lc, final ClusterRef cRef) {
        try {
            ConfigSupport.apply(new SingleConfigCode<LbConfig>() {
                    @Override
                    public Object run(LbConfig param) throws PropertyVetoException, TransactionFailure {
                        param.getClusterRefOrServerRef().remove(cRef);
                        return Boolean.TRUE;
                    }
            }, lc);
        } catch (TransactionFailure ex) {
            String msg = localStrings.getLocalString("FailedToRemoveClusterRef", "Failed to remove cluster-ref");
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(msg);
            report.setFailureCause(ex);
            return;
        }
    }
}