/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.karaf.management;

import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;

public class RmiRegistryFactory {

    private int port = Registry.REGISTRY_PORT;
    private Registry registry;
    private boolean locate;
    private boolean create = true;
    private boolean locallyCreated;
    
    /**
     * @return the create
     */
    public boolean isCreate() {
        return create;
    }

    /**
     * @param create the create to set
     */
    public void setCreate(boolean create) {
        this.create = create;
    }

    /**
     * @return the locate
     */
    public boolean isLocate() {
        return locate;
    }

    /**
     * @param locate the locate to set
     */
    public void setLocate(boolean locate) {
        this.locate = locate;
    }

    /**
     * @return the port
     */
    public int getPort() {
        return port;
    }

    /**
     * @param port the port to set
     */
    public void setPort(int port) {
        this.port = port;
    }

    public Object getObject() throws Exception {
        return registry;
    }

    public void init() throws RemoteException {
        if (registry == null && locate) {
            try {
                Registry reg = LocateRegistry.getRegistry(getPort());
                reg.list();
                registry = reg;
            } catch (RemoteException e) {
                // ignore
            }
        }
        if (registry == null && create) {
            registry = LocateRegistry.createRegistry(getPort());
            locallyCreated = true;
        }
    }

    public void destroy() throws RemoteException {
        if (registry != null && locallyCreated) {
            Registry reg = registry;
            registry = null;
            UnicastRemoteObject.unexportObject(reg, true);
        }
    }

}
