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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2012-2014 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
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* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.glassfish.grizzly;
import org.glassfish.grizzly.nio.NIOTransport;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.channels.Channel;
import java.util.Random;
/**
* @since 2.2.19
*/
public abstract class AbstractBindingHandler implements SocketBinder {
protected static final Random RANDOM = new Random();
protected final NIOTransport transport;
protected Processor processor;
protected ProcessorSelector processorSelector;
// ------------------------------------------------------------ Constructors
public AbstractBindingHandler(final NIOTransport transport) {
this.transport = transport;
this.processor = transport.getProcessor();
this.processorSelector = transport.getProcessorSelector();
}
// ---------------------------------------------------------- Public Methods
/**
* Get the default {@link Processor} to process {@link IOEvent}, occurring
* on connection phase.
*
* @return the default {@link Processor} to process {@link IOEvent},
* occurring on connection phase.
*/
public Processor getProcessor() {
return processor;
}
/**
* Set the default {@link Processor} to process {@link IOEvent}, occurring
* on connection phase.
*
* @param processor the default {@link Processor} to process
* {@link IOEvent}, occurring on connection phase.
*/
public void setProcessor(Processor processor) {
this.processor = processor;
}
/**
* Gets the default {@link ProcessorSelector}, which will be used to get
* {@link Processor} to process I/O events, occurring on connection phase.
*
* @return the default {@link ProcessorSelector}, which will be used to get
* {@link Processor} to process I/O events, occurring on connection phase.
*/
public ProcessorSelector getProcessorSelector() {
return processorSelector;
}
/**
* Sets the default {@link ProcessorSelector}, which will be used to get
* {@link Processor} to process I/O events, occurring on connection phase.
*
* @param processorSelector the default {@link ProcessorSelector},
* which will be used to get {@link Processor} to process I/O events,
* occurring on connection phase.
*/
public void setProcessorSelector(final ProcessorSelector processorSelector) {
this.processorSelector = processorSelector;
}
// ----------------------------------------------- Methods from SocketBinder
/**
* {@inheritDoc}
*/
@Override
public Connection bind(final int port) throws IOException {
return bind(new InetSocketAddress(port));
}
/**
* {@inheritDoc}
*/
@Override
public Connection bind(final String host, final int port) throws IOException {
return bind(new InetSocketAddress(host, port));
}
/**
* {@inheritDoc}
*/
@Override
public Connection bind(final String host, final int port, final int backlog)
throws IOException {
return bind(new InetSocketAddress(host, port), backlog);
}
/**
* {@inheritDoc}
*/
@Override
public Connection bind(final String host, final PortRange portRange,
final int backlog) throws IOException {
IOException ioException;
final int lower = portRange.getLower();
final int range = portRange.getUpper() - lower + 1;
int offset = RANDOM.nextInt(range);
final int start = offset;
do {
final int port = lower + offset;
try {
return bind(host, port, backlog);
} catch (IOException e) {
ioException = e;
}
offset = (offset + 1) % range;
} while (offset != start);
throw ioException;
}
/**
* This operation is not supported by implementations of {@link AbstractBindingHandler}.
*
* @throws UnsupportedOperationException
*/
@Override
public final void unbindAll() {
throw new UnsupportedOperationException();
}
// ------------------------------------------------------- Protected Methods
@SuppressWarnings("unchecked")
protected T getSystemInheritedChannel(final Class channelType)
throws IOException {
final Channel inheritedChannel = System.inheritedChannel();
if (inheritedChannel == null) {
throw new IOException("Inherited channel is not set");
}
if (!(channelType.isInstance(inheritedChannel))) {
throw new IOException("Inherited channel is not "
+ channelType.getName()
+ ", but "
+ inheritedChannel.getClass().getName());
}
return (T) inheritedChannel;
}
// ----------------------------------------------------------- Inner Classes
/**
* Builder
*
* @param
*/
@SuppressWarnings("unchecked")
public abstract static class Builder {
protected Processor processor;
protected ProcessorSelector processorSelector;
public E processor(final Processor processor) {
this.processor = processor;
return (E) this;
}
public E processorSelector(final ProcessorSelector processorSelector) {
this.processorSelector = processorSelector;
return (E) this;
}
public AbstractBindingHandler build() {
AbstractBindingHandler bindingHandler = create();
if (processor != null) {
bindingHandler.setProcessor(processor);
}
if (processorSelector != null) {
bindingHandler.setProcessorSelector(processorSelector);
}
return bindingHandler;
}
protected abstract AbstractBindingHandler create();
}
}
