/**
* 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.jpa;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.store.MessageRecoveryListener;
import org.apache.activemq.store.ReferenceStore;
import org.apache.activemq.store.jpa.model.StoredMessageReference;
import org.apache.activemq.usage.MemoryUsage;
import org.apache.activemq.usage.SystemUsage;
import org.apache.activemq.util.IOExceptionSupport;
import org.apache.activemq.wireformat.WireFormat;
public class JPAReferenceStore implements ReferenceStore {
protected final JPAPersistenceAdapter adapter;
protected final WireFormat wireFormat;
protected final ActiveMQDestination destination;
protected final String destinationName;
protected AtomicLong lastMessageId = new AtomicLong(-1);
protected final Lock lock = new ReentrantLock();
public JPAReferenceStore(JPAPersistenceAdapter adapter, ActiveMQDestination destination) {
this.adapter = adapter;
this.destination = destination;
this.destinationName = destination.getQualifiedName();
this.wireFormat = this.adapter.getWireFormat();
}
public Lock getStoreLock() {
return lock;
}
public ActiveMQDestination getDestination() {
return destination;
}
public void addMessage(ConnectionContext context, Message message) throws IOException {
throw new RuntimeException("Use addMessageReference instead");
}
public Message getMessage(MessageId identity) throws IOException {
throw new RuntimeException("Use addMessageReference instead");
}
public void addMessageReference(ConnectionContext context, MessageId messageId, ReferenceData data) throws IOException {
EntityManager manager = adapter.beginEntityManager(context);
try {
StoredMessageReference sm = new StoredMessageReference();
sm.setDestination(destinationName);
sm.setId(messageId.getBrokerSequenceId());
sm.setMessageId(messageId.toString());
sm.setExiration(data.getExpiration());
sm.setFileId(data.getFileId());
sm.setOffset(data.getOffset());
manager.persist(sm);
} catch (Throwable e) {
adapter.rollbackEntityManager(context, manager);
throw IOExceptionSupport.create(e);
}
adapter.commitEntityManager(context, manager);
}
public ReferenceData getMessageReference(MessageId identity) throws IOException {
ReferenceData rc = null;
EntityManager manager = adapter.beginEntityManager(null);
try {
StoredMessageReference message = null;
if (identity.getBrokerSequenceId() != 0) {
message = manager.find(StoredMessageReference.class, identity.getBrokerSequenceId());
} else {
Query query = manager.createQuery("select m from StoredMessageReference m where m.messageId=?1");
query.setParameter(1, identity.toString());
message = (StoredMessageReference)query.getSingleResult();
}
if (message != null) {
rc = new ReferenceData();
rc.setExpiration(message.getExiration());
rc.setFileId(message.getFileId());
rc.setOffset(message.getOffset());
}
} catch (Throwable e) {
adapter.rollbackEntityManager(null, manager);
throw IOExceptionSupport.create(e);
}
adapter.commitEntityManager(null, manager);
return rc;
}
public int getMessageCount() throws IOException {
Long rc;
EntityManager manager = adapter.beginEntityManager(null);
try {
Query query = manager.createQuery("select count(m) from StoredMessageReference m");
rc = (Long)query.getSingleResult();
} catch (Throwable e) {
adapter.rollbackEntityManager(null, manager);
throw IOExceptionSupport.create(e);
}
adapter.commitEntityManager(null, manager);
return rc.intValue();
}
public void recover(MessageRecoveryListener container) throws Exception {
EntityManager manager = adapter.beginEntityManager(null);
try {
Query query = manager.createQuery("select m from StoredMessageReference m where m.destination=?1 order by m.id asc");
query.setParameter(1, destinationName);
for (StoredMessageReference m : (List<StoredMessageReference>)query.getResultList()) {
MessageId id = new MessageId(m.getMessageId());
id.setBrokerSequenceId(m.getId());
container.recoverMessageReference(id);
}
} catch (Throwable e) {
adapter.rollbackEntityManager(null, manager);
throw IOExceptionSupport.create(e);
}
adapter.commitEntityManager(null, manager);
}
public void recoverNextMessages(int maxReturned, MessageRecoveryListener listener) throws Exception {
EntityManager manager = adapter.beginEntityManager(null);
try {
Query query = manager.createQuery("select m from StoredMessageReference m where m.destination=?1 and m.id>?2 order by m.id asc");
query.setParameter(1, destinationName);
query.setParameter(2, lastMessageId.get());
query.setMaxResults(maxReturned);
int count = 0;
for (StoredMessageReference m : (List<StoredMessageReference>)query.getResultList()) {
MessageId id = new MessageId(m.getMessageId());
id.setBrokerSequenceId(m.getId());
listener.recoverMessageReference(id);
lastMessageId.set(m.getId());
count++;
if (count >= maxReturned) {
return;
}
}
} catch (Throwable e) {
adapter.rollbackEntityManager(null, manager);
throw IOExceptionSupport.create(e);
}
adapter.commitEntityManager(null, manager);
}
public void removeAllMessages(ConnectionContext context) throws IOException {
EntityManager manager = adapter.beginEntityManager(context);
try {
Query query = manager.createQuery("delete from StoredMessageReference m where m.destination=?1");
query.setParameter(1, destinationName);
query.executeUpdate();
} catch (Throwable e) {
adapter.rollbackEntityManager(context, manager);
throw IOExceptionSupport.create(e);
}
adapter.commitEntityManager(context, manager);
}
public void removeMessage(ConnectionContext context, MessageAck ack) throws IOException {
EntityManager manager = adapter.beginEntityManager(context);
try {
Query query = manager.createQuery("delete from StoredMessageReference m where m.id=?1");
query.setParameter(1, ack.getLastMessageId().getBrokerSequenceId());
query.executeUpdate();
} catch (Throwable e) {
adapter.rollbackEntityManager(context, manager);
throw IOExceptionSupport.create(e);
}
adapter.commitEntityManager(context, manager);
}
public void resetBatching() {
lastMessageId.set(-1);
}
public void setMemoryUsage(MemoryUsage memoeyUSage){
}
public void start() throws Exception {
}
public void stop() throws Exception {
}
public void setBatch(MessageId startAfter) {
}
public boolean supportsExternalBatchControl() {
return false;
}
}