/*
* 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.proton.transaction;
import java.util.LinkedList;
import java.util.Map;
import org.apache.activemq.artemis.core.persistence.StorageManager;
import org.apache.activemq.artemis.core.server.MessageReference;
import org.apache.activemq.artemis.core.server.Queue;
import org.apache.activemq.artemis.core.server.ServerConsumer;
import org.apache.activemq.artemis.core.server.impl.QueueImpl;
import org.apache.activemq.artemis.core.server.impl.RefsOperation;
import org.apache.activemq.artemis.core.transaction.Transaction;
import org.apache.qpid.proton.engine.Delivery;
/**
* AMQP Protocol has different TX Rollback behaviour for Acks depending on whether an AMQP delivery has been settled
* or not. This class extends the Core RefsOperation used for normal acks. In the case where deliveries have been
* settled, normal Ack rollback is applied. For cases where deliveries are unsettled and rolled back, we increment
* the delivery count and return to the consumer.
*/
public class ProtonTransactionRefsOperation extends RefsOperation {
public ProtonTransactionRefsOperation(final Queue queue, StorageManager storageManager) {
super(queue, storageManager);
}
@Override
public void rollbackRedelivery(Transaction txn, MessageReference ref, long timeBase, Map<QueueImpl, LinkedList<MessageReference>> queueMap) throws Exception {
ProtonTransactionImpl tx = (ProtonTransactionImpl) txn;
if (tx.getDeliveries().containsKey(ref)) {
Delivery del = tx.getDeliveries().get(ref).getA();
ServerConsumer consumer = (ServerConsumer) tx.getDeliveries().get(ref).getB().getBrokerConsumer();
// Rollback normally if the delivery is not settled or a forced TX rollback is done (e.g. connection drop).
if (del.remotelySettled() || !tx.isDischarged()) {
super.rollbackRedelivery(tx, ref, timeBase, queueMap);
} else {
ref.incrementDeliveryCount();
consumer.backToDelivering(ref);
del.disposition(del.getLocalState() == null ? del.getDefaultDeliveryState() : del.getLocalState());
}
} else {
super.rollbackRedelivery(tx, ref, timeBase, queueMap);
}
}
}