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/**
* 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.transport.amqp;
import java.io.IOException;
import java.security.cert.X509Certificate;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.Command;
import org.apache.activemq.transport.Transport;
import org.apache.activemq.transport.TransportFilter;
import org.apache.activemq.transport.TransportListener;
import org.apache.activemq.transport.tcp.SslTransport;
import org.apache.activemq.util.IOExceptionSupport;
import org.apache.activemq.wireformat.WireFormat;
import org.apache.qpid.proton.jms.InboundTransformer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The AMQPTransportFilter normally sits on top of a TcpTransport that has been
* configured with the AmqpWireFormat and is used to convert AMQP commands to
* ActiveMQ commands. All of the conversion work is done by delegating to the
* AMQPProtocolConverter
*/
public class AmqpTransportFilter extends TransportFilter implements AmqpTransport {
private static final Logger LOG = LoggerFactory.getLogger(AmqpTransportFilter.class);
static final Logger TRACE_BYTES = LoggerFactory.getLogger(AmqpTransportFilter.class.getPackage().getName() + ".BYTES");
static final Logger TRACE_FRAMES = LoggerFactory.getLogger(AmqpTransportFilter.class.getPackage().getName() + ".FRAMES");
private IAmqpProtocolConverter protocolConverter;
private AmqpWireFormat wireFormat;
private boolean trace;
private String transformer = InboundTransformer.TRANSFORMER_NATIVE;
private final ReentrantLock lock = new ReentrantLock();
public AmqpTransportFilter(Transport next, WireFormat wireFormat, BrokerService brokerService) {
super(next);
this.protocolConverter = new AMQPProtocolDiscriminator(this, brokerService);
if (wireFormat instanceof AmqpWireFormat) {
this.wireFormat = (AmqpWireFormat) wireFormat;
}
}
@Override
public void oneway(Object o) throws IOException {
try {
final Command command = (Command) o;
lock.lock();
try {
protocolConverter.onActiveMQCommand(command);
} finally {
lock.unlock();
}
} catch (Exception e) {
throw IOExceptionSupport.create(e);
}
}
@Override
public void onException(IOException error) {
lock.lock();
try {
protocolConverter.onAMQPException(error);
} finally {
lock.unlock();
}
}
@Override
public void sendToActiveMQ(IOException error) {
super.onException(error);
}
@Override
public void onCommand(Object command) {
try {
if (trace) {
TRACE_BYTES.trace("Received: \n{}", command);
}
lock.lock();
try {
protocolConverter.onAMQPData(command);
} finally {
lock.unlock();
}
} catch (IOException e) {
handleException(e);
} catch (Exception e) {
onException(IOExceptionSupport.create(e));
}
}
@Override
public void sendToActiveMQ(Command command) {
assert lock.isHeldByCurrentThread();
TransportListener l = transportListener;
if (l != null) {
l.onCommand(command);
}
}
@Override
public void sendToAmqp(Object command) throws IOException {
assert lock.isHeldByCurrentThread();
if (trace) {
TRACE_BYTES.trace("Sending: \n{}", command);
}
Transport n = next;
if (n != null) {
n.oneway(command);
}
}
@Override
public X509Certificate[] getPeerCertificates() {
if (next instanceof SslTransport) {
X509Certificate[] peerCerts = ((SslTransport) next).getPeerCertificates();
if (trace && peerCerts != null) {
LOG.debug("Peer Identity has been verified\n");
}
return peerCerts;
}
return null;
}
@Override
public boolean isTrace() {
return trace;
}
public void setTrace(boolean trace) {
this.trace = trace;
this.protocolConverter.updateTracer();
}
@Override
public AmqpWireFormat getWireFormat() {
return this.wireFormat;
}
public void handleException(IOException e) {
super.onException(e);
}
@Override
public String getTransformer() {
return transformer;
}
public void setTransformer(String transformer) {
this.transformer = transformer;
}
@Override
public IAmqpProtocolConverter getProtocolConverter() {
return protocolConverter;
}
@Override
public void setProtocolConverter(IAmqpProtocolConverter protocolConverter) {
this.protocolConverter = protocolConverter;
}
public void setPrefetch(int prefetch) {
protocolConverter.setPrefetch(prefetch);
}
public void setProducerCredit(int producerCredit) {
protocolConverter.setProducerCredit(producerCredit);
}
}