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AMQPFederationQueueSenderController.java
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AMQPFederationQueueSenderController.java
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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.artemis.protocol.amqp.connect.federation;
import static org.apache.activemq.artemis.protocol.amqp.proton.AmqpSupport.QUEUE_CAPABILITY;
import static org.apache.activemq.artemis.protocol.amqp.proton.AmqpSupport.TOPIC_CAPABILITY;
import static org.apache.activemq.artemis.protocol.amqp.proton.AmqpSupport.verifyOfferedCapabilities;
import static org.apache.activemq.artemis.protocol.amqp.connect.federation.AMQPFederation.FEDERATION_INSTANCE_RECORD;
import static org.apache.activemq.artemis.protocol.amqp.connect.federation.AMQPFederationConstants.FEDERATION_QUEUE_RECEIVER;
import java.util.Map;
import org.apache.activemq.artemis.api.config.ActiveMQDefaultConfiguration;
import org.apache.activemq.artemis.api.core.ActiveMQExceptionType;
import org.apache.activemq.artemis.api.core.RoutingType;
import org.apache.activemq.artemis.api.core.SimpleString;
import org.apache.activemq.artemis.core.server.Consumer;
import org.apache.activemq.artemis.core.server.QueueQueryResult;
import org.apache.activemq.artemis.protocol.amqp.exceptions.ActiveMQAMQPException;
import org.apache.activemq.artemis.protocol.amqp.exceptions.ActiveMQAMQPIllegalStateException;
import org.apache.activemq.artemis.protocol.amqp.exceptions.ActiveMQAMQPNotFoundException;
import org.apache.activemq.artemis.protocol.amqp.exceptions.ActiveMQAMQPNotImplementedException;
import org.apache.activemq.artemis.protocol.amqp.proton.AMQPSessionContext;
import org.apache.activemq.artemis.protocol.amqp.proton.AmqpSupport;
import org.apache.activemq.artemis.protocol.amqp.proton.ProtonServerSenderContext;
import org.apache.activemq.artemis.protocol.amqp.proton.SenderController;
import org.apache.activemq.artemis.selector.filter.FilterException;
import org.apache.activemq.artemis.selector.impl.SelectorParser;
import org.apache.activemq.artemis.utils.CompositeAddress;
import org.apache.qpid.proton.amqp.DescribedType;
import org.apache.qpid.proton.amqp.Symbol;
import org.apache.qpid.proton.amqp.messaging.Source;
import org.apache.qpid.proton.amqp.transport.AmqpError;
import org.apache.qpid.proton.amqp.transport.ReceiverSettleMode;
import org.apache.qpid.proton.engine.Connection;
import org.apache.qpid.proton.engine.Sender;
/**
* {@link SenderController} used when an AMQP federation Queue receiver is created
* and this side of the connection needs to create a matching sender. The attach of
* the sender should only succeed if there is a local matching queue, otherwise the
* link should be closed with an error indicating that the matching resource is not
* present on this peer.
*/
public final class AMQPFederationQueueSenderController extends AMQPFederationBaseSenderController {
public AMQPFederationQueueSenderController(AMQPSessionContext session) throws ActiveMQAMQPException {
super(session);
}
@SuppressWarnings("unchecked")
@Override
public Consumer init(ProtonServerSenderContext senderContext) throws Exception {
final Sender sender = senderContext.getSender();
final Source source = (Source) sender.getRemoteSource();
final String selector;
final Connection protonConnection = sender.getSession().getConnection();
final org.apache.qpid.proton.engine.Record attachments = protonConnection.attachments();
AMQPFederation federation = attachments.get(FEDERATION_INSTANCE_RECORD, AMQPFederation.class);
if (federation == null) {
throw new ActiveMQAMQPIllegalStateException("Cannot create a federation link from non-federation connection");
}
if (source == null) {
throw new ActiveMQAMQPNotImplementedException("Null source lookup not supported on federation links.");
}
// Match the settlement mode of the remote instead of relying on the default of MIXED.
sender.setSenderSettleMode(sender.getRemoteSenderSettleMode());
// We don't currently support SECOND so enforce that the answer is always FIRST
sender.setReceiverSettleMode(ReceiverSettleMode.FIRST);
// We need to offer back that we support federation for the remote to complete the attach
sender.setOfferedCapabilities(new Symbol[] {FEDERATION_QUEUE_RECEIVER});
// We indicate desired to meet specification that we cannot use a capability unless we
// indicated it was desired, however unless offered by the remote we cannot use it.
sender.setDesiredCapabilities(new Symbol[] {AmqpSupport.CORE_MESSAGE_TUNNELING_SUPPORT});
final RoutingType routingType = getRoutingType(source);
final SimpleString targetAddress;
final SimpleString targetQueue;
if (CompositeAddress.isFullyQualified(source.getAddress())) {
targetAddress = SimpleString.toSimpleString(CompositeAddress.extractAddressName(source.getAddress()));
targetQueue = SimpleString.toSimpleString(CompositeAddress.extractQueueName(source.getAddress()));
} else {
targetAddress = null;
targetQueue = SimpleString.toSimpleString(source.getAddress());
}
final QueueQueryResult result = sessionSPI.queueQuery(targetQueue, routingType, false, null);
if (!result.isExists()) {
federation.registerMissingQueue(targetQueue.toString());
throw new ActiveMQAMQPNotFoundException("Queue: '" + targetQueue + "' does not exist");
}
if (targetAddress != null && !result.getAddress().equals(targetAddress)) {
federation.registerMissingQueue(targetQueue.toString());
throw new ActiveMQAMQPNotFoundException("Queue: '" + targetQueue + "' is not mapped to specified address: " + targetAddress);
}
// An queue receiver may supply a filter if the queue being federated had a filter attached
// to it at creation, this ensures that we only bring back message that match the original
// queue filter and not others that would simply increase traffic for no reason.
final Map.Entry<Symbol, DescribedType> filter = AmqpSupport.findFilter(source.getFilter(), AmqpSupport.JMS_SELECTOR_FILTER_IDS);
if (filter != null) {
final String filterString = filter.getValue().getDescribed().toString();
try {
SelectorParser.parse(filterString);
} catch (FilterException e) {
throw new ActiveMQAMQPException(AmqpError.INVALID_FIELD, "Invalid filter", ActiveMQExceptionType.INVALID_FILTER_EXPRESSION);
}
// No need to apply another filter if the current one on the Queue already matches that.
if (result.getFilterString() == null || !filterString.equals(result.getFilterString().toString())) {
selector = filterString;
} else {
selector = null;
}
} else {
selector = null;
}
// We need to check that the remote offers its ability to read tunneled core messages and
// if not we must not send them but instead convert all messages to AMQP messages first.
tunnelCoreMessages = verifyOfferedCapabilities(sender, AmqpSupport.CORE_MESSAGE_TUNNELING_SUPPORT);
// Configure an action to register a watcher for this federated queue to be created if it is
// removed during the lifetime of the federation receiver, if restored an event will be sent
// to the remote to prompt it to create a new receiver.
resourceDeletedAction = (e) -> federation.registerMissingQueue(targetQueue.toString());
return (Consumer) sessionSPI.createSender(senderContext, targetQueue, selector, false);
}
private static RoutingType getRoutingType(Source source) {
if (source != null) {
if (source.getCapabilities() != null) {
for (Symbol capability : source.getCapabilities()) {
if (TOPIC_CAPABILITY.equals(capability)) {
return RoutingType.MULTICAST;
} else if (QUEUE_CAPABILITY.equals(capability)) {
return RoutingType.ANYCAST;
}
}
}
}
return ActiveMQDefaultConfiguration.getDefaultRoutingType();
}
}