diff options
Diffstat (limited to 'qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/HeadersExchange.java')
| -rw-r--r-- | qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/HeadersExchange.java | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/HeadersExchange.java b/qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/HeadersExchange.java deleted file mode 100644 index 68ad88c4cb..0000000000 --- a/qpid/java/broker/src/main/java/org/apache/qpid/server/exchange/HeadersExchange.java +++ /dev/null @@ -1,360 +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.protocol.AMQConstant; -import org.apache.qpid.exchange.ExchangeDefaults; -import org.apache.qpid.framing.AMQShortString; -import org.apache.qpid.framing.AMQTypedValue; -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.virtualhost.VirtualHost; - -import javax.management.JMException; -import javax.management.openmbean.ArrayType; -import javax.management.openmbean.CompositeData; -import javax.management.openmbean.CompositeDataSupport; -import javax.management.openmbean.CompositeType; -import javax.management.openmbean.OpenDataException; -import javax.management.openmbean.OpenType; -import javax.management.openmbean.SimpleType; -import javax.management.openmbean.TabularData; -import javax.management.openmbean.TabularDataSupport; -import javax.management.openmbean.TabularType; -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); - - - - public static final ExchangeType<HeadersExchange> TYPE = new ExchangeType<HeadersExchange>() - { - - public AMQShortString getName() - { - return ExchangeDefaults.HEADERS_EXCHANGE_CLASS; - } - - public Class<HeadersExchange> getExchangeClass() - { - return HeadersExchange.class; - } - - public HeadersExchange newInstance(VirtualHost host, AMQShortString name, boolean durable, int ticket, - boolean autoDelete) throws AMQException - { - HeadersExchange exch = new HeadersExchange(); - exch.initialise(host, name, durable, ticket, autoDelete); - return exch; - } - - public AMQShortString getDefaultExchangeName() - { - - return ExchangeDefaults.HEADERS_EXCHANGE_NAME; - } - }; - - - 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 - { - @MBeanConstructor("Creates an MBean for AMQ Headers exchange") - public HeadersExchangeMBean() throws JMException - { - super(); - _exchangeType = "headers"; - init(); - } - - /** - * initialises the OpenType objects. - */ - protected void init() throws OpenDataException - { - _bindingItemNames = new String[]{"Binding No", "Queue Name", "Queue Bindings"}; - _bindingItemIndexNames = new String[]{_bindingItemNames[0]}; - - _bindingItemTypes = new OpenType[3]; - _bindingItemTypes[0] = SimpleType.INTEGER; - _bindingItemTypes[1] = SimpleType.STRING; - _bindingItemTypes[2] = new ArrayType(1, SimpleType.STRING); - _bindingDataType = new CompositeType("Exchange Binding", "Queue name and header bindings", - _bindingItemNames, _bindingItemNames, _bindingItemTypes); - _bindinglistDataType = new TabularType("Exchange Bindings", "List of exchange bindings for " + getName(), - _bindingDataType, _bindingItemIndexNames); - } - - public TabularData bindings() throws OpenDataException - { - _bindingList = new TabularDataSupport(_bindinglistDataType); - int count = 1; - for (Iterator<Registration> itr = _bindings.iterator(); itr.hasNext();) - { - Registration registration = itr.next(); - String queueName = registration.queue.getName().toString(); - - HeadersBinding headers = registration.binding; - FieldTable headerMappings = headers.getMappings(); - final List<String> mappingList = new ArrayList<String>(); - - headerMappings.processOverElements(new FieldTable.FieldTableElementProcessor() - { - - public boolean processElement(String propertyName, AMQTypedValue value) - { - mappingList.add(propertyName + "=" + value.getValue()); - return true; - } - - public Object getResult() - { - return mappingList; - } - }); - - - Object[] bindingItemValues = {count++, 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 javax.management.JMException - */ - public void createNewBinding(String queueName, String binding) throws JMException - { - AMQQueue queue = getQueueRegistry().getQueue(new AMQShortString(queueName)); - - if (queue == null) - { - throw new JMException("Queue \"" + queueName + "\" is not registered with the exchange."); - } - - String[] bindings = binding.split(","); - FieldTable bindingMap = 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>\" "); - } - bindingMap.setString(keyAndValue[0], keyAndValue[1]); - } - - _bindings.add(new Registration(new HeadersBinding(bindingMap), queue)); - } - - } // End of MBean class - - public AMQShortString getType() - { - return ExchangeDefaults.HEADERS_EXCHANGE_CLASS; - } - - public void registerQueue(AMQShortString 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(AMQShortString routingKey, AMQQueue queue, FieldTable args) throws AMQException - { - _logger.debug("Exchange " + getName() + ": Unbinding " + queue.getName()); - if(!_bindings.remove(new Registration(new HeadersBinding(args), queue))) - { - throw new AMQException(AMQConstant.NOT_FOUND, "Queue " + queue + " was not registered with exchange " + this.getName() - + " with headers args " + args); - } - } - - public void route(AMQMessage payload) throws AMQException - { - FieldTable headers = getHeaders(payload.getContentHeaderBody()); - if (_logger.isDebugEnabled()) - { - _logger.debug("Exchange " + getName() + ": routing message with headers " + headers); - } - boolean routed = 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()); - } - payload.enqueue(e.queue); - routed = true; - } - } - if (!routed) - { - - String msg = "Exchange " + getName() + ": message not routable."; - - if (payload.getMessagePublishInfo().isMandatory() || payload.getMessagePublishInfo().isImmediate()) - { - throw new NoRouteException(msg, payload); - } - else - { - _logger.warn(msg); - } - - } - } - - public boolean isBound(AMQShortString routingKey, FieldTable arguments, AMQQueue queue) - { - //fixme isBound here should take the arguements in to consideration. - return isBound(routingKey, queue); - } - - public boolean isBound(AMQShortString routingKey, AMQQueue queue) - { - return isBound(queue); - } - - public boolean isBound(AMQShortString routingKey) - { - return hasBindings(); - } - - public boolean isBound(AMQQueue queue) - { - for (Registration r : _bindings) - { - if (r.queue.equals(queue)) - { - return true; - } - } - return false; - } - - public boolean hasBindings() - { - return !_bindings.isEmpty(); - } - - protected FieldTable 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 (JMException ex) - { - _logger.error("Exception occured in creating the HeadersExchangeMBean", ex); - throw new AMQException("Exception occured in creating the HeadersExchangeMBean", ex); - } - } - - public Map<AMQShortString, List<AMQQueue>> getBindings() - { - return null; - } - - 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); - } - } -} |