io.netty.channel.nio.NioTask Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* 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:
*
* 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.nio;
import java.nio.channels.SelectableChannel;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
/**
* An arbitrary task that can be executed by {@link NioEventLoop} when a {@link SelectableChannel} becomes ready.
*
* @see NioEventLoop#register(SelectableChannel, int, NioTask)
*/
public interface NioTask {
/**
* Invoked when the {@link SelectableChannel} has been selected by the {@link Selector}.
*/
void channelReady(C ch, SelectionKey key) throws Exception;
/**
* Invoked when the {@link SelectionKey} of the specified {@link SelectableChannel} has been cancelled and thus
* this {@link NioTask} will not be notified anymore.
*
* @param cause the cause of the unregistration. {@code null} if a user called {@link SelectionKey#cancel()} or
* the event loop has been shut down.
*/
void channelUnregistered(C ch, Throwable cause) throws Exception;
}