/**
* Copyright 2013, Big Switch Networks, Inc.
*
* 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, 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 org.openflow.protocol.factory;
import org.jboss.netty.buffer.ChannelBuffer;
import org.openflow.protocol.action.OFActionVendor;
/** Interface contract for an actionfactory that creates vendor-specific actions.
* VendorActionFactories are registered with the BasicFactory for a specific
* vendor id.
* <p>
* <b>Note:</b> Implementations are expected to be thread-safe.
*
* @author Andreas Wundsam <andreas.wundsam@bigswitch.com>
*/
public interface OFVendorActionFactory {
/** parse the data from the wire, create and return a vendor-specific action.
*
* @param data contains a serialized vendor action at the current readerPosition.
* The full message is guaranteed to be available in the buffer.
*
* @return upon success returns a newly allocated vendor-specific
* action instance, and advances the readerPosition in data for the
* entire length. Upon failure, returns null and leaves the readerPosition
* in data unmodified.
*/
OFActionVendor readFrom(ChannelBuffer data);
}