content: /*
   * 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.cassandra.net;
  
  import io.netty.channel.Channel;
  import io.netty.channel.ChannelFuture;
  import io.netty.channel.ChannelHandlerContext;
  import io.netty.channel.ChannelPromise;
  import io.netty.util.concurrent.Future; // checkstyle: permit this import
  import io.netty.util.concurrent.GenericFutureListener;
  import org.apache.cassandra.utils.concurrent.AsyncPromise;
  
  /**
   * See {@link AsyncPromise} and {@link io.netty.channel.ChannelPromise}
   *
   * This class is all boiler plate, just ensuring we return ourselves and invoke the correct Promise method.
   */
  public class AsyncChannelPromise extends AsyncPromise.WithExecutor<Void> implements ChannelPromise
  {
      private final Channel channel;
  
      @SuppressWarnings("unused")
      public AsyncChannelPromise(Channel channel)
      {
          super(channel.eventLoop());
          this.channel = channel;
      }
  
      AsyncChannelPromise(Channel channel, GenericFutureListener<? extends Future<? super Void>> listener)
      {
          super(channel.eventLoop(), listener);
          this.channel = channel;
      }
  
      public static AsyncChannelPromise withListener(ChannelHandlerContext context, GenericFutureListener<? extends Future<? super Void>> listener)
      {
          return withListener(context.channel(), listener);
      }
  
      public static AsyncChannelPromise withListener(Channel channel, GenericFutureListener<? extends Future<? super Void>> listener)
      {
          return new AsyncChannelPromise(channel, listener);
      }
  
      public static ChannelFuture writeAndFlush(ChannelHandlerContext context, Object message, GenericFutureListener<? extends Future<? super Void>> listener)
      {
          return context.writeAndFlush(message, withListener(context.channel(), listener));
      }
  
      public static ChannelFuture writeAndFlush(Channel channel, Object message, GenericFutureListener<? extends Future<? super Void>> listener)
      {
          return channel.writeAndFlush(message, withListener(channel, listener));
      }
  
      public static ChannelFuture writeAndFlush(ChannelHandlerContext context, Object message)
      {
          return context.writeAndFlush(message, new AsyncChannelPromise(context.channel()));
      }
  
      public static ChannelFuture writeAndFlush(Channel channel, Object message)
      {
          return channel.writeAndFlush(message, new AsyncChannelPromise(channel));
      }
  
      public Channel channel()
      {
          return channel;
      }
  
      public boolean isVoid()
      {
          return false;
      }
  
      public ChannelPromise setSuccess()
      {
          return setSuccess(null);
      }
  
      public AsyncChannelPromise setSuccess(Void v)
      {
          super.setSuccess(v);
          return this;
      }
  
      public boolean trySuccess()
      {
          return trySuccess(null);
      }
  
      public AsyncChannelPromise setFailure(Throwable throwable)
      {
          super.setFailure(throwable);
          return this;
      }
  
      public AsyncChannelPromise sync() throws InterruptedException
      {
          super.sync();
          return this;
      }
  
      public AsyncChannelPromise syncUninterruptibly()
      {
          super.syncUninterruptibly();
          return this;
      }
  
      public AsyncChannelPromise await() throws InterruptedException
      {
          super.await();
          return this;
      }
  
      public AsyncChannelPromise awaitUninterruptibly()
      {
          super.awaitUninterruptibly();
          return this;
      }
  
      public AsyncChannelPromise addListener(GenericFutureListener<? extends Future<? super Void>> listener)
      {
          super.addListener(listener);
          return this;
      }
  
      public AsyncChannelPromise addListeners(GenericFutureListener<? extends Future<? super Void>>... listeners)
      {
          super.addListeners(listeners);
          return this;
      }
  
      public AsyncChannelPromise removeListener(GenericFutureListener<? extends Future<? super Void>> listener)
      {
          throw new UnsupportedOperationException();
      }
  
      public AsyncChannelPromise removeListeners(GenericFutureListener<? extends Future<? super Void>>... listeners)
      {
          throw new UnsupportedOperationException();
      }
  
      public ChannelPromise unvoid()
      {
          return this;
      }
  }
  