org.glassfish.grizzly.asyncqueue.PushBackHandler Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2011-2015 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.asyncqueue;
import org.glassfish.grizzly.Connection;
/**
* Callback handler, which will be called by Grizzly {@link org.glassfish.grizzly.Writer}
* implementation, if message can not be neither written nor added to write queue
* at the moment due to I/O or memory limitations.
* User may perform one of the actions proposed by {@link PushBackContext} or
* implement any other custom processing logic.
*
* @since 2.2
*
* @deprecated push back logic is deprecated.
*
* @author Alexey Stashok
*/
@SuppressWarnings("deprecation")
public interface PushBackHandler {
/**
* The method is invoked once message is accepted by
* {@link org.glassfish.grizzly.Writer}. It means either message was written
* or scheduled to be written asynchronously.
*
* @param connection {@link Connection}
* @param message {@link WritableMessage}
*/
void onAccept(Connection connection, WritableMessage message);
/**
* The method is invoked if message was refused by {@link org.glassfish.grizzly.Writer}
* due to I/O or memory limitations.
* At this point user can perform one of the actions proposed by {@link PushBackContext},
* or implement any custom processing logic.
*
* @param connection {@link Connection}
* @param message {@link WritableMessage}
* @param pushBackContext {@link PushBackContext}
*/
void onPushBack(Connection connection, WritableMessage message,
PushBackContext pushBackContext);
}