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• DelegatingChannelPromiseNotifier.java

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io.netty.channel.DelegatingChannelPromiseNotifier Maven / Gradle / Ivy

/*
 * Copyright 2017 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.channel;

import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.GenericFutureListener;
import io.netty.util.internal.PromiseNotificationUtil;
import io.netty.util.internal.UnstableApi;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import static io.netty.util.internal.ObjectUtil.checkNotNull;

@UnstableApi
public final class DelegatingChannelPromiseNotifier implements ChannelPromise, ChannelFutureListener {
    private static final InternalLogger logger =
            InternalLoggerFactory.getInstance(DelegatingChannelPromiseNotifier.class);
    private final ChannelPromise delegate;
    private final boolean logNotifyFailure;

    public DelegatingChannelPromiseNotifier(ChannelPromise delegate) {
        this(delegate, !(delegate instanceof VoidChannelPromise));
    }

    public DelegatingChannelPromiseNotifier(ChannelPromise delegate, boolean logNotifyFailure) {
        this.delegate = checkNotNull(delegate, "delegate");
        this.logNotifyFailure = logNotifyFailure;
    }

    @Override
    public void operationComplete(ChannelFuture future) throws Exception {
        InternalLogger internalLogger = logNotifyFailure ? logger : null;
        if (future.isSuccess()) {
            Void result = future.get();
            PromiseNotificationUtil.trySuccess(delegate, result, internalLogger);
        } else if (future.isCancelled()) {
            PromiseNotificationUtil.tryCancel(delegate, internalLogger);
        } else {
            Throwable cause = future.cause();
            PromiseNotificationUtil.tryFailure(delegate, cause, internalLogger);
        }
    }

    @Override
    public Channel channel() {
        return delegate.channel();
    }

    @Override
    public ChannelPromise setSuccess(Void result) {
        delegate.setSuccess(result);
        return this;
    }

    @Override
    public ChannelPromise setSuccess() {
        delegate.setSuccess();
        return this;
    }

    @Override
    public boolean trySuccess() {
        return delegate.trySuccess();
    }

    @Override
    public boolean trySuccess(Void result) {
        return delegate.trySuccess(result);
    }

    @Override
    public ChannelPromise setFailure(Throwable cause) {
        delegate.setFailure(cause);
        return this;
    }

    @Override
    public ChannelPromise addListener(GenericFutureListener> listener) {
        delegate.addListener(listener);
        return this;
    }

    @Override
    public ChannelPromise addListeners(GenericFutureListener>... listeners) {
        delegate.addListeners(listeners);
        return this;
    }

    @Override
    public ChannelPromise removeListener(GenericFutureListener> listener) {
        delegate.removeListener(listener);
        return this;
    }

    @Override
    public ChannelPromise removeListeners(GenericFutureListener>... listeners) {
        delegate.removeListeners(listeners);
        return this;
    }

    @Override
    public boolean tryFailure(Throwable cause) {
        return delegate.tryFailure(cause);
    }

    @Override
    public boolean setUncancellable() {
        return delegate.setUncancellable();
    }

    @Override
    public ChannelPromise await() throws InterruptedException {
        delegate.await();
        return this;
    }

    @Override
    public ChannelPromise awaitUninterruptibly() {
        delegate.awaitUninterruptibly();
        return this;
    }

    @Override
    public boolean isVoid() {
        return delegate.isVoid();
    }

    @Override
    public ChannelPromise unvoid() {
        return isVoid() ? new DelegatingChannelPromiseNotifier(delegate.unvoid()) : this;
    }

    @Override
    public boolean await(long timeout, TimeUnit unit) throws InterruptedException {
        return delegate.await(timeout, unit);
    }

    @Override
    public boolean await(long timeoutMillis) throws InterruptedException {
        return delegate.await(timeoutMillis);
    }

    @Override
    public boolean awaitUninterruptibly(long timeout, TimeUnit unit) {
        return delegate.awaitUninterruptibly(timeout, unit);
    }

    @Override
    public boolean awaitUninterruptibly(long timeoutMillis) {
        return delegate.awaitUninterruptibly(timeoutMillis);
    }

    @Override
    public Void getNow() {
        return delegate.getNow();
    }

    @Override
    public boolean cancel(boolean mayInterruptIfRunning) {
        return delegate.cancel(mayInterruptIfRunning);
    }

    @Override
    public boolean isCancelled() {
        return delegate.isCancelled();
    }

    @Override
    public boolean isDone() {
        return delegate.isDone();
    }

    @Override
    public Void get() throws InterruptedException, ExecutionException {
        return delegate.get();
    }

    @Override
    public Void get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
        return delegate.get(timeout, unit);
    }

    @Override
    public ChannelPromise sync() throws InterruptedException {
        delegate.sync();
        return this;
    }

    @Override
    public ChannelPromise syncUninterruptibly() {
        delegate.syncUninterruptibly();
        return this;
    }

    @Override
    public boolean isSuccess() {
        return delegate.isSuccess();
    }

    @Override
    public boolean isCancellable() {
        return delegate.isCancellable();
    }

    @Override
    public Throwable cause() {
        return delegate.cause();
    }
}