/*
 *
 * Copyright (c) 2006 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.qpid.server.cluster;

import org.apache.qpid.framing.AMQMethodBody;

public class BlockingHandler implements ResponseHandler
{
    private final Class _expected;
    private boolean _completed;
    private AMQMethodBody _response;


    public BlockingHandler()
    {
        this(AMQMethodBody.class);
    }

    public BlockingHandler(Class<? extends AMQMethodBody> expected)
    {
        _expected = expected;
    }

    public void responded(AMQMethodBody response)
    {
        if (_expected.isInstance(response))
        {
            _response = response;
            completed();
        }
    }

    public void removed()
    {
        completed();
    }

    private synchronized void completed()
    {
        _completed = true;
        notifyAll();
    }

    synchronized void waitForCompletion()
    {
        while (!_completed)
        {
            try
            {
                wait();
            }
            catch (InterruptedException ignore)
            {

            }
        }
    }

    AMQMethodBody getResponse()
    {
        return _response;
    }

    boolean failed()
    {
        return _response == null;
    }

    boolean isCompleted()
    {
        return _completed;
    }
}
