| /* |
| * 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.qpid.server.util; |
| |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.apache.qpid.server.model.OperationTimeoutException; |
| |
| public class FutureHelper |
| { |
| public static <T, E extends Exception> T await(Future<T> future, long timeout, TimeUnit timeUnit) |
| throws OperationTimeoutException, CancellationException, E |
| { |
| try |
| { |
| if (timeout > 0) |
| { |
| return future.get(timeout, timeUnit); |
| } |
| else |
| { |
| return future.get(); |
| } |
| } |
| catch (InterruptedException e) |
| { |
| Thread.currentThread().interrupt(); |
| throw new ServerScopedRuntimeException("Future execution was interrupted", e); |
| } |
| catch (ExecutionException e) |
| { |
| Throwable cause = e.getCause(); |
| if (cause instanceof RuntimeException) |
| { |
| throw (RuntimeException) cause; |
| } |
| else if (cause instanceof Error) |
| { |
| throw (Error) cause; |
| } |
| else |
| { |
| try |
| { |
| throw (E) cause; |
| } |
| catch (ClassCastException cce) |
| { |
| throw new ServerScopedRuntimeException("Future failed", cause); |
| } |
| } |
| } |
| catch (TimeoutException e) |
| { |
| throw new OperationTimeoutException(e); |
| } |
| } |
| |
| public static <T, E extends Exception> T await(Future<T> future) |
| throws OperationTimeoutException, CancellationException, E |
| { |
| return FutureHelper.<T, E>await(future, 0, null); |
| } |
| |
| } |