Await.java

/**
 * Copyright 2015 Santhosh Kumar Tekuri
 *
 * The JLibs authors license 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 jlibs.wamp4j;

import java.util.concurrent.atomic.AtomicReference;

import static com.jayway.awaitility.Awaitility.await;
import static org.hamcrest.Matchers.notNullValue;

/**
 * @author Santhosh Kumar Tekuri
 */
public class Await{
    @SuppressWarnings("unchecked")
    public static <T> T getResult(AtomicReference<Object> atomic) throws Throwable{
        await().untilAtomic(atomic, notNullValue());
        Object result = atomic.getAndSet(null);
        if(result instanceof Throwable)
            throw (Throwable)result;
        return (T)result;
    }
}