32933821bb
Motivation: AbstractFuture currently wraps CancellationException in a ExecutionException. However the interface of Future says that this exception should be directly thrown. Modifications: - Throw CancellationException from AbstractFuture.get Result: Interface contract for CancellationException is honored in AbstractFuture.
59 lines
1.9 KiB
Java
59 lines
1.9 KiB
Java
/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.util.concurrent;
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import java.util.concurrent.CancellationException;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeoutException;
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/**
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* Abstract {@link Future} implementation which does not allow for cancellation.
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*
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* @param <V>
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*/
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public abstract class AbstractFuture<V> implements Future<V> {
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@Override
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public V get() throws InterruptedException, ExecutionException {
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await();
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Throwable cause = cause();
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if (cause == null) {
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return getNow();
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}
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if (cause instanceof CancellationException) {
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throw (CancellationException) cause;
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}
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throw new ExecutionException(cause);
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}
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@Override
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public V get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
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if (await(timeout, unit)) {
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Throwable cause = cause();
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if (cause == null) {
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return getNow();
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}
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if (cause instanceof CancellationException) {
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throw (CancellationException) cause;
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}
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throw new ExecutionException(cause);
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}
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throw new TimeoutException();
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}
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}
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