/**
* 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.store.kahadaptor;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.command.BaseCommand;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.store.MessageStore;
import org.apache.activemq.store.TopicMessageStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Stores a messages/acknowledgements for a transaction
*
*
*/
class KahaTransaction {
protected List<TxCommand> list = new ArrayList<TxCommand>();
void add(KahaMessageStore store, BaseCommand command) {
TxCommand tx = new TxCommand();
tx.setCommand(command);
tx.setMessageStoreKey(store.getId());
list.add(tx);
}
public void add(KahaMessageStore destination, String clientId, String subscriptionName, MessageId messageId, MessageAck ack) {
TxCommand tx = new TxCommand();
tx.setCommand(ack);
tx.setMessageStoreKey(destination.getId());
tx.setClientId(clientId);
tx.setSubName(subscriptionName);
tx.setMessageId(messageId);
list.add(tx);
}
Message[] getMessages() {
List<BaseCommand> result = new ArrayList<BaseCommand>();
for (int i = 0; i < list.size(); i++) {
TxCommand command = list.get(i);
if (command.isAdd()) {
result.add(command.getCommand());
}
}
Message[] messages = new Message[result.size()];
return result.toArray(messages);
}
MessageAck[] getAcks() {
List<BaseCommand> result = new ArrayList<BaseCommand>();
for (int i = 0; i < list.size(); i++) {
TxCommand command = list.get(i);
if (command.isRemove()) {
result.add(command.getCommand());
}
}
MessageAck[] acks = new MessageAck[result.size()];
return result.toArray(acks);
}
void prepare() {
}
void rollback() {
list.clear();
}
/**
* @throws IOException
*/
void commit(KahaTransactionStore transactionStore) throws IOException {
for (int i = 0; i < list.size(); i++) {
TxCommand command = list.get(i);
MessageStore ms = transactionStore.getStoreById(command.getMessageStoreKey());
if (command.isAdd()) {
ms.addMessage(null, (Message)command.getCommand());
}
}
for (int i = 0; i < list.size(); i++) {
TxCommand command = list.get(i);
MessageStore ms = transactionStore.getStoreById(command.getMessageStoreKey());
if (command.isRemove()) {
ms.removeMessage(null, (MessageAck)command.getCommand());
} else if (command.isAck()) {
((TopicMessageStore)ms).acknowledge(null, command.getClientId(), command.getSubscriptionName(),
command.getMessageId(), (MessageAck)command.getCommand());
}
}
}
List<TxCommand> getList() {
return new ArrayList<TxCommand>(list);
}
void setList(List<TxCommand> list) {
this.list = list;
}
}