hedwig-server/src/test/java/org/apache/hedwig/StubCallback.java

/**
 * 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.hedwig;

import java.util.concurrent.SynchronousQueue;

import org.apache.hedwig.exceptions.PubSubException;
import org.apache.hedwig.util.ConcurrencyUtils;
import org.apache.hedwig.util.Either;
import org.apache.hedwig.util.Callback;

public class StubCallback<T> implements Callback<T> {

    public SynchronousQueue<Either<T, PubSubException>> queue = new SynchronousQueue<Either<T, PubSubException>>();

    public void operationFailed(Object ctx, final PubSubException exception) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                ConcurrencyUtils.put(queue, Either.of((T) null, exception));

            }
        }).start();

    }

    public void operationFinished(Object ctx, final T resultOfOperation) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                ConcurrencyUtils.put(queue, Either.of(resultOfOperation, (PubSubException) null));

            }
        }).start();
    }
}