/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 io.hawtjms.provider.discovery.multicast;
import io.hawtjms.provider.discovery.DiscoveryEvent;
/**
* Interface for a DatagramPacket parser object which is used by the
* MulticastDiscoveryAget to parse incoming packets to determine the
* discovered peer information.
*/
public interface PacketParser {
/**
* @return the multicast group assignment for this parser.
*/
String getGroup();
/**
* Sets the multicast group that the parent agent is assigned to. This can
* be used in some cases to parse discovery messages.
*
* @param group
* the multicast group that this parser's parent agent resides in./
*/
void setGroup(String group);
/**
* Process in incoming event packet and create a DiscoveryEvent from the data.
*
* @param data
* the new data packet to process.
* @param offset
* the offset into the data buffer to start at.
* @param length
* the length of the data packet contained in the buffer.
*
* @return a new DiscoveryEvent created from pocessing the incoming data.
*/
DiscoveryEvent processPacket(byte[] data, int offset, int length);
}