clebertsuconic commented on code in PR #6323: URL: https://github.com/apache/artemis/pull/6323#discussion_r3094967720
########## artemis-protocols/artemis-amqp-protocol/src/main/java/org/apache/activemq/artemis/protocol/amqp/broker/AMQPMessagePersisterV4.java: ########## @@ -0,0 +1,109 @@ +/* + * 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.protocol.amqp.broker; + +import java.lang.invoke.MethodHandles; + +import org.apache.activemq.artemis.api.core.ActiveMQBuffer; +import org.apache.activemq.artemis.api.core.Message; +import org.apache.activemq.artemis.core.persistence.CoreMessageObjectPools; +import org.apache.activemq.artemis.utils.DataConstants; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import static org.apache.activemq.artemis.core.persistence.PersisterIDs.AMQPMessagePersisterV4_ID; + +/** + * V4 adds a size field to determine persister boundaries, enabling forward-compatible + * extensions without additional versioning. + **/ +public class AMQPMessagePersisterV4 extends AMQPMessagePersisterV3 { + + private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); + + public static final byte ID = AMQPMessagePersisterV4_ID; + + public static AMQPMessagePersisterV4 theInstance; + + public static AMQPMessagePersisterV4 getInstance() { + if (theInstance == null) { + theInstance = new AMQPMessagePersisterV4(); + } + return theInstance; + } + + @Override + public byte getID() { + return ID; + } + + public AMQPMessagePersisterV4() { + super(); + } + + + protected static final int PERSISTER_SIZE = DataConstants.SIZE_INT + // memory estimate + DataConstants.SIZE_BYTE + + DataConstants.SIZE_BOOLEAN; // message priority + + @Override + public int getEncodeSize(Message record) { + int encodeSize = super.getEncodeSize(record) + PERSISTER_SIZE + DataConstants.SIZE_INT; // the size delimiter and whatever is written in encode + return encodeSize; + } + + + @Override + public void encode(ActiveMQBuffer buffer, Message record) { + super.encode(buffer, record); + + writeSizeDelimiter(buffer); + buffer.writeInt(record.getMemoryEstimate()); + buffer.writeByte(record.getPriority()); + buffer.writeBoolean(record.isDurable()); + } + + protected void writeSizeDelimiter(ActiveMQBuffer buffer) { + // this is to allow us to determine the boundary of this persister, for future use. + buffer.writeInt(PERSISTER_SIZE); Review Comment: we already have extraProperties... but I don't want to use it here.. I wanted to keep it lean and just encoded -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
