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Diffstat (limited to 'java/java/broker/src/org/apache/qpid/server/exchange/HeadersExchange.java')
| -rw-r--r-- | java/java/broker/src/org/apache/qpid/server/exchange/HeadersExchange.java | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/java/java/broker/src/org/apache/qpid/server/exchange/HeadersExchange.java b/java/java/broker/src/org/apache/qpid/server/exchange/HeadersExchange.java deleted file mode 100644 index 961d4ddf4c..0000000000 --- a/java/java/broker/src/org/apache/qpid/server/exchange/HeadersExchange.java +++ /dev/null @@ -1,271 +0,0 @@ -/* - * - * 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.qpid.server.exchange; - -import org.apache.log4j.Logger; -import org.apache.qpid.AMQException; -import org.apache.qpid.framing.BasicContentHeaderProperties; -import org.apache.qpid.framing.ContentHeaderBody; -import org.apache.qpid.framing.FieldTable; -import org.apache.qpid.server.management.MBeanConstructor; -import org.apache.qpid.server.management.MBeanDescription; -import org.apache.qpid.server.queue.AMQMessage; -import org.apache.qpid.server.queue.AMQQueue; -import org.apache.qpid.server.registry.ApplicationRegistry; - -import javax.management.JMException; -import javax.management.NotCompliantMBeanException; -import javax.management.openmbean.*; -import java.util.ArrayList; -import java.util.Iterator; -import java.util.List; -import java.util.Map; -import java.util.concurrent.CopyOnWriteArrayList; - -/** - * An exchange that binds queues based on a set of required headers and header values - * and routes messages to these queues by matching the headers of the message against - * those with which the queues were bound. - * <p/> - * <pre> - * The Headers Exchange - * - * Routes messages according to the value/presence of fields in the message header table. - * (Basic and JMS content has a content header field called "headers" that is a table of - * message header fields). - * - * class = "headers" - * routing key is not used - * - * Has the following binding arguments: - * - * the X-match field - if "all", does an AND match (used for GRM), if "any", does an OR match. - * other fields prefixed with "X-" are ignored (and generate a console warning message). - * a field with no value or empty value indicates a match on presence only. - * a field with a value indicates match on field presence and specific value. - * - * Standard instances: - * - * amq.match - pub/sub on field content/value - * </pre> - */ -public class HeadersExchange extends AbstractExchange -{ - private static final Logger _logger = Logger.getLogger(HeadersExchange.class); - - private final List<Registration> _bindings = new CopyOnWriteArrayList<Registration>(); - - /** - * HeadersExchangeMBean class implements the management interface for the - * Header Exchanges. - */ - @MBeanDescription("Management Bean for Headers Exchange") - private final class HeadersExchangeMBean extends ExchangeMBean - { - private String[] _bindingItemNames = {"Queue", "HeaderBinding"}; - private String[] _bindingItemDescriptions = {"Queue Name", "Header attribute bindings"}; - private String[] _bindingItemIndexNames = {"HeaderBinding"}; - private OpenType[] _bindingItemTypes = new OpenType[2]; - - private CompositeType _bindingDataType = null; - private TabularType _bindinglistDataType = null; - private TabularDataSupport _bindingList = null; - - @MBeanConstructor("Creates an MBean for AMQ Headers exchange") - public HeadersExchangeMBean() throws NotCompliantMBeanException - { - super(); - init(); - } - /** - * initialises the OpenType objects. - */ - private void init() - { - try - { - _bindingItemTypes[0] = SimpleType.STRING; - _bindingItemTypes[1] = new ArrayType(1, SimpleType.STRING); - - _bindingDataType = new CompositeType("QueueAndHeaderAttributesBinding", - "Queue name and header bindings", - _bindingItemNames, - _bindingItemDescriptions, - _bindingItemTypes); - _bindinglistDataType = new TabularType("HeaderBindings", - "List of queue bindings for " + getName(), - _bindingDataType, - _bindingItemIndexNames); - } - catch(OpenDataException ex) - { - //It should never occur. - _logger.error("OpenDataTypes could not be created.", ex); - throw new RuntimeException(ex); - } - } - - public TabularData viewBindings() - throws OpenDataException - { - _bindingList = new TabularDataSupport(_bindinglistDataType); - for (Iterator<Registration> itr = _bindings.iterator(); itr.hasNext();) - { - Registration registration = itr.next(); - String queueName = registration.queue.getName(); - - HeadersBinding headers = registration.binding; - Map<Object, Object> headerMappings = headers.getMappings(); - List<String> mappingList = new ArrayList<String>(); - - for (Map.Entry<Object, Object> en : headerMappings.entrySet()) - { - String key = en.getKey().toString(); - String value = en.getValue().toString(); - - mappingList.add(key + "=" + value); - } - - Object[] bindingItemValues = {queueName, mappingList.toArray(new String[0])}; - CompositeData bindingData = new CompositeDataSupport(_bindingDataType, - _bindingItemNames, - bindingItemValues); - _bindingList.put(bindingData); - } - - return _bindingList; - } - - /** - * Creates bindings. Binding pattern is as follows- - * <attributename>=<value>,<attributename>=<value>,... - * @param queueName - * @param binding - * @throws JMException - */ - public void createBinding(String queueName, String binding) - throws JMException - { - AMQQueue queue = ApplicationRegistry.getInstance().getQueueRegistry().getQueue(queueName); - - if (queue == null) - { - throw new JMException("Queue \"" + queueName + "\" is not registered with the exchange."); - } - - String[] bindings = binding.split(","); - FieldTable fieldTable = new FieldTable(); - for (int i = 0; i < bindings.length; i++) - { - String[] keyAndValue = bindings[i].split("="); - if (keyAndValue == null || keyAndValue.length < 2) - { - throw new JMException("Format for headers binding should be \"<attribute1>=<value1>,<attribute2>=<value2>\" "); - } - fieldTable.put(keyAndValue[0], keyAndValue[1]); - } - - _bindings.add(new Registration(new HeadersBinding(fieldTable), queue)); - } - - } // End of MBean class - - public void registerQueue(String routingKey, AMQQueue queue, FieldTable args) throws AMQException - { - _logger.debug("Exchange " + getName() + ": Binding " + queue.getName() + " with " + args); - _bindings.add(new Registration(new HeadersBinding(args), queue)); - } - - public void deregisterQueue(String routingKey, AMQQueue queue) throws AMQException - { - _logger.debug("Exchange " + getName() + ": Unbinding " + queue.getName()); - _bindings.remove(new Registration(null, queue)); - } - - public void route(AMQMessage payload) throws AMQException - { - Map headers = getHeaders(payload.getContentHeaderBody()); - if (_logger.isDebugEnabled()) - { - _logger.debug("Exchange " + getName() + ": routing message with headers " + headers); - } - boolean delivered = false; - for (Registration e : _bindings) - { - if (e.binding.matches(headers)) - { - if (_logger.isDebugEnabled()) - { - _logger.debug("Exchange " + getName() + ": delivering message with headers " + - headers + " to " + e.queue.getName()); - } - e.queue.deliver(payload); - delivered = true; - } - } - if (!delivered) - { - _logger.warn("Exchange " + getName() + ": message not routable."); - } - } - - protected Map getHeaders(ContentHeaderBody contentHeaderFrame) - { - //what if the content type is not 'basic'? 'file' and 'stream' content classes also define headers, - //but these are not yet implemented. - return ((BasicContentHeaderProperties) contentHeaderFrame.properties).getHeaders(); - } - - protected ExchangeMBean createMBean() throws AMQException - { - try - { - return new HeadersExchangeMBean(); - } - catch (NotCompliantMBeanException ex) - { - _logger.error("Exception occured in creating the HeadersExchangeMBean", ex); - throw new AMQException("Exception occured in creating the HeadersExchangeMBean", ex); - } - } - - private static class Registration - { - private final HeadersBinding binding; - private final AMQQueue queue; - - Registration(HeadersBinding binding, AMQQueue queue) - { - this.binding = binding; - this.queue = queue; - } - - public int hashCode() - { - return queue.hashCode(); - } - - public boolean equals(Object o) - { - return o instanceof Registration && ((Registration) o).queue.equals(queue); - } - } -} |