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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2008-2013 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
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.glassfish.grizzly;
import org.glassfish.grizzly.utils.Holder;
/**
* Result of write operation, returned by {@link Writeable}.
*
* @param type of the message
* @param type of the address
*
* @author Alexey Stashok
*/
public class WriteResult implements Result, Cacheable {
private static final ThreadCache.CachedTypeIndex CACHE_IDX =
ThreadCache.obtainIndex(WriteResult.class, 4);
private boolean isRecycled = false;
public static WriteResult create(Connection connection) {
final WriteResult writeResult = takeFromCache();
if (writeResult != null) {
writeResult.connection = connection;
writeResult.isRecycled = false;
return writeResult;
}
return new WriteResult(connection);
}
public static WriteResult create(final Connection connection,
final K message, final L dstAddress, final long writeSize) {
final WriteResult writeResult = takeFromCache();
if (writeResult != null) {
writeResult.set(connection, message, dstAddress, writeSize);
writeResult.isRecycled = false;
return writeResult;
}
return new WriteResult(connection, message, dstAddress, writeSize);
}
@SuppressWarnings("unchecked")
private static WriteResult takeFromCache() {
return ThreadCache.takeFromCache(CACHE_IDX);
}
/**
* Connection, from which data were read.
*/
private Connection connection;
/**
* message data
*/
private K message;
/**
* Destination address.
*/
private Holder dstAddressHolder;
/**
* Number of bytes written.
*/
private long writtenSize;
protected WriteResult() {
}
private WriteResult(final Connection connection) {
this(connection, null, null, 0);
}
private WriteResult(Connection connection, K message, L dstAddress,
long writeSize) {
set(connection, message, dstAddress, writeSize);
}
/**
* Get the {@link Connection} data were read from.
*
* @return the {@link Connection} data were read from.
*/
@Override
public final Connection getConnection() {
checkRecycled();
return connection;
}
/**
* Get the message, which was read.
*
* @return the message, which was read.
*/
public final K getMessage() {
checkRecycled();
return message;
}
/**
* Set the message, which was read.
*
* @param message the message, which was read.
*/
public final void setMessage(K message) {
checkRecycled();
this.message = message;
}
/**
* Get the destination address, the message was written to.
*
* @return the destination address, the message was written to.
*/
public final L getDstAddress() {
checkRecycled();
return dstAddressHolder != null ? dstAddressHolder.get() : null;
}
/**
* Get the destination address, the message was written to.
*
* @return the destination address, the message was written to.
*/
public final Holder getDstAddressHolder() {
checkRecycled();
return dstAddressHolder;
}
/**
* Set the destination address, the message was written to.
*
* @param dstAddress the destination address, the message was written to.
*/
public final void setDstAddress(final L dstAddress) {
checkRecycled();
this.dstAddressHolder = createAddrHolder(dstAddress);
}
/**
* Set the destination address, the message was written to.
*
* @param dstAddressHolder the destination address, the message was written to.
*/
public final void setDstAddressHolder(final Holder dstAddressHolder) {
checkRecycled();
this.dstAddressHolder = dstAddressHolder;
}
/**
* Get the number of bytes, which were written.
*
* @return the number of bytes, which were written.
*/
public final long getWrittenSize() {
checkRecycled();
return writtenSize;
}
/**
* Set the number of bytes, which were written.
*
* @param writeSize the number of bytes, which were written.
*/
public final void setWrittenSize(long writeSize) {
checkRecycled();
this.writtenSize = writeSize;
}
private void checkRecycled() {
if (Grizzly.isTrackingThreadCache() && isRecycled)
throw new IllegalStateException("ReadResult has been recycled!");
}
/**
* One method to set all the WriteResult properties.
*
* @param connection
* @param message
* @param dstAddress
* @param writtenSize
*/
protected void set(final Connection connection, final K message,
final L dstAddress, final long writtenSize) {
this.connection = connection;
this.message = message;
this.dstAddressHolder = createAddrHolder(dstAddress);
this.writtenSize = writtenSize;
}
/**
* Create an address holder.
*
* @param dstAddress
* @return
*/
protected Holder createAddrHolder(final L dstAddress) {
return Holder.staticHolder(dstAddress);
}
protected void reset() {
connection = null;
message = null;
dstAddressHolder = null;
writtenSize = 0;
}
@Override
public void recycle() {
reset();
isRecycled = true;
ThreadCache.putToCache(CACHE_IDX, this);
}
@Override
public Object copy() {
return WriteResult.create(getConnection(), getMessage(),
getDstAddress(), getWrittenSize());
}
}
