/**
* 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 org.apache.activemq.artemis.core.message.impl;
import org.apache.activemq.artemis.api.core.ActiveMQBuffer;
import org.apache.activemq.artemis.api.core.Message;
import org.apache.activemq.artemis.api.core.SimpleString;
import org.apache.activemq.artemis.core.persistence.Persister;
import org.apache.activemq.artemis.utils.DataConstants;
public class CoreMessagePersister implements Persister<Message> {
public static CoreMessagePersister theInstance = new CoreMessagePersister();
public static CoreMessagePersister getInstance() {
return theInstance;
}
protected CoreMessagePersister() {
}
@Override
public int getEncodeSize(Message record) {
return DataConstants.SIZE_BYTE + record.getPersistSize() +
SimpleString.sizeofNullableString(record.getAddressSimpleString()) + DataConstants.SIZE_LONG;
}
/** Sub classes must add the first short as the protocol-id */
@Override
public void encode(ActiveMQBuffer buffer, Message record) {
buffer.writeByte((byte)1);
buffer.writeLong(record.getMessageID());
buffer.writeNullableSimpleString(record.getAddressSimpleString());
record.persist(buffer);
}
@Override
public Message decode(ActiveMQBuffer buffer, Message record) {
// the caller must consume the first byte already, as that will be used to decide what persister (protocol) to use
long id = buffer.readLong();
SimpleString address = buffer.readNullableSimpleString();
record = new CoreMessage();
record.reloadPersistence(buffer);
record.setMessageID(id);
record.setAddress(address);
return record;
}
}