container/modules/storeconfig/src/share/org/apache/catalina/storeconfig/CatalinaClusterSF.java

/*
 * Copyright 1999-2001,2004 The Apache Software Foundation.
 * 
 * Licensed 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.catalina.storeconfig;

import java.io.PrintWriter;

import org.apache.catalina.Valve;
import org.apache.catalina.cluster.CatalinaCluster;
import org.apache.catalina.cluster.ClusterDeployer;
import org.apache.catalina.cluster.ClusterReceiver;
import org.apache.catalina.cluster.ClusterSender;
import org.apache.catalina.cluster.MembershipService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Generate Cluster Element with Membership,Sender,Receiver,Deployer and
 * ReplicationValve
 * 
 * @author Peter Rossbach
 */
public class CatalinaClusterSF extends StoreFactoryBase {

    private static Log log = LogFactory.getLog(CatalinaClusterSF.class);

    /**
     * Store the specified Cluster childs.
     * 
     * @param aWriter
     *            PrintWriter to which we are storing
     * @param indent
     *            Number of spaces to indent this element
     * @param aCluster
     *            Cluster whose properties are being stored
     * 
     * @exception Exception
     *                if an exception occurs while storing
     */
    public void storeChilds(PrintWriter aWriter, int indent, Object aCluster,
            StoreDescription parentDesc) throws Exception {
        if (aCluster instanceof CatalinaCluster) {
            CatalinaCluster cluster = (CatalinaCluster) aCluster;

            // Store nested <Membership> element
            MembershipService service = cluster.getMembershipService();
            if (service != null) {
                storeElement(aWriter, indent, service);
            }
            // Store nested <Sender> element
            ClusterSender sender = cluster.getClusterSender();
            if (sender != null) {
                storeElement(aWriter, indent, sender);
            }
            // Store nested <Receiver> element
            ClusterReceiver receiver = cluster.getClusterReceiver();
            if (receiver != null) {
                storeElement(aWriter, indent, receiver);
            }
            // Store nested <Deployer> element
            ClusterDeployer deployer = cluster.getClusterDeployer();
            if (deployer != null) {
                storeElement(aWriter, indent, deployer);
            }
            // Store nested <Valve> element
            // ReplicationValve are not store at Hosts element, see
            // Host transient child list!
            Valve valve = cluster.getValve();
            if (valve != null) {
                IStoreFactory elementFactory = getRegistry().findStoreFactory(
                        valve.getClass());
                if (elementFactory != null) {
                    StoreDescription desc = getRegistry().findDescription(
                            valve.getClass());
                    elementFactory.store(aWriter, indent, valve);
                }
            }
        }
    }
}