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/*
* Copyright 2012 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:
*
* 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.jboss.netty.channel;
/**
* Receives and processes the terminal downstream {@link ChannelEvent}s.
*
* A {@link ChannelSink} is an internal component which is supposed to be
* implemented by a transport provider. Most users will not see this type
* in their code.
*
* @apiviz.uses org.jboss.netty.channel.ChannelPipeline - - sends events upstream
*/
public interface ChannelSink {
/**
* Invoked by {@link ChannelPipeline} when a downstream {@link ChannelEvent}
* has reached its terminal (the head of the pipeline).
*/
void eventSunk(ChannelPipeline pipeline, ChannelEvent e) throws Exception;
/**
* Invoked by {@link ChannelPipeline} when an exception was raised while
* one of its {@link ChannelHandler}s process a {@link ChannelEvent}.
*/
void exceptionCaught(ChannelPipeline pipeline, ChannelEvent e, ChannelPipelineException cause) throws Exception;
/**
* Execute the given {@link Runnable} later in the io-thread.
* Some implementation may not support this and just execute it directly.
*/
ChannelFuture execute(ChannelPipeline pipeline, Runnable task);
}