org.xnio.conduits.WriteReadyHandler Maven / Gradle / Ivy
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*
* Copyright 2013 Red Hat, Inc. and/or its affiliates.
*
* Licensed 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.xnio.conduits;
import org.xnio.ChannelListener;
import org.xnio.ChannelListeners;
import org.xnio.IoUtils;
import org.xnio.channels.CloseListenerSettable;
import org.xnio.channels.SuspendableWriteChannel;
import org.xnio.channels.WriteListenerSettable;
/**
* A conduit write-ready handler.
*
* @author David M. Lloyd
*/
public interface WriteReadyHandler extends TerminateHandler {
/**
* Signify that writes are ready.
*/
void writeReady();
/**
* A write ready handler which calls channel listener(s).
*
* @param the channel type
*/
class ChannelListenerHandler & CloseListenerSettable> implements WriteReadyHandler {
private final C channel;
/**
* Construct a new instance.
*
* @param channel the channel
*/
public ChannelListenerHandler(final C channel) {
this.channel = channel;
}
public void forceTermination() {
IoUtils.safeClose(channel);
}
public void writeReady() {
final ChannelListener writeListener = channel.getWriteListener();
if (writeListener == null) {
channel.suspendWrites();
} else {
ChannelListeners.invokeChannelListener(channel, writeListener);
}
}
public void terminated() {
ChannelListeners.invokeChannelListener(channel, channel.getCloseListener());
}
}
/**
* A runnable task which invokes the {@link WriteReadyHandler#writeReady()} method of the given handler.
*/
class ReadyTask implements Runnable {
private final WriteReadyHandler handler;
/**
* Construct a new instance.
*
* @param handler the handler to invoke
*/
public ReadyTask(final WriteReadyHandler handler) {
this.handler = handler;
}
public void run() {
handler.writeReady();
}
}
}