| /* |
| * 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.synapse.config.xml; |
| |
| import org.apache.axiom.om.OMAbstractFactory; |
| import org.apache.axiom.om.OMElement; |
| import org.apache.axiom.om.OMFactory; |
| import org.apache.axiom.om.OMNamespace; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.synapse.SynapseConstants; |
| import org.apache.synapse.SynapseException; |
| import org.apache.synapse.message.processors.MessageProcessor; |
| import org.apache.synapse.util.xpath.SynapseXPath; |
| |
| import javax.xml.namespace.QName; |
| import java.util.Iterator; |
| |
| |
| /** |
| * Create an instance of the given Message processor, and sets properties on it. |
| * <p/> |
| * <messageProcessor name="string" class="classname" messageStore = "string" > |
| * <parameter name="string">"string" <parameter> |
| * <parameter name="string">"string" <parameter> |
| * <parameter name="string">"string" <parameter> |
| * <parameter name="string" expression="string"> |
| * . |
| * . |
| * </messageProcessor> |
| */ |
| public class MessageProcessorSerializer { |
| |
| private static final Log log = LogFactory.getLog(MessageProcessorSerializer.class); |
| |
| public static final String FORWARDING_PROCESSOR = |
| "org.apache.synapse.message.processors.forward.ScheduledMessageForwardingProcessor"; |
| protected static final OMFactory fac = OMAbstractFactory.getOMFactory(); |
| protected static final OMNamespace synNS = SynapseConstants.SYNAPSE_OMNAMESPACE; |
| protected static final OMNamespace nullNS = fac.createOMNamespace( |
| XMLConfigConstants.NULL_NAMESPACE, ""); |
| |
| |
| /** |
| * Serialize a give Message processor instance to XML configuration |
| * |
| * @param parent parent configuration |
| * @param processor message processor instance |
| * @return created XML configuration |
| */ |
| public static OMElement serializeMessageProcessor(OMElement parent, |
| MessageProcessor processor) { |
| OMElement processorElem = fac.createOMElement("messageProcessor", synNS); |
| if (processor != null) { |
| processorElem.addAttribute(fac.createOMAttribute("class", nullNS, |
| processor.getClass().getName())); |
| } else { |
| handleException("Invalid processor. Provider is required"); |
| } |
| |
| if (processor.getName() != null) { |
| processorElem.addAttribute(fac.createOMAttribute("name", nullNS, processor.getName())); |
| } else { |
| handleException("Message store Name not specified"); |
| } |
| |
| if (FORWARDING_PROCESSOR.equals(processor.getClass().getName())) { |
| if (processor.getTargetEndpoint() != null) { |
| processorElem.addAttribute( |
| fac.createOMAttribute("targetEndpoint", nullNS, processor.getTargetEndpoint())); |
| } else { |
| // This validation is removed to support backward compatibility |
| // handleException("Target Endpoint not specified"); |
| } |
| } |
| |
| if (processor.getMessageStoreName() != null) { |
| processorElem.addAttribute(fac.createOMAttribute( |
| "messageStore", nullNS, processor.getMessageStoreName())); |
| } |
| |
| if (processor.getParameters() != null) { |
| Iterator iterator = processor.getParameters().keySet().iterator(); |
| while (iterator.hasNext()) { |
| String name = (String) iterator.next(); |
| Object object = processor.getParameters().get(name); |
| OMElement property = fac.createOMElement("parameter", synNS); |
| property.addAttribute(fac.createOMAttribute( |
| "name", nullNS, name)); |
| |
| if (object instanceof String) { |
| String value = (String) object; |
| property.setText(value.trim()); |
| |
| } else if (object instanceof SynapseXPath) { |
| SynapseXPath expression = (SynapseXPath) object; |
| SynapseXPathSerializer.serializeXPath(expression,property,"expression"); |
| |
| } |
| |
| processorElem.addChild(property); |
| |
| } |
| } |
| |
| |
| if (getSerializedDescription(processor) != null) { |
| processorElem.addChild(getSerializedDescription(processor)); |
| } |
| |
| if (parent != null) { |
| parent.addChild(processorElem); |
| } |
| return processorElem; |
| } |
| |
| private static void handleException(String msg) { |
| log.error(msg); |
| throw new SynapseException(msg); |
| } |
| |
| private static OMElement getSerializedDescription(MessageProcessor processor) { |
| OMElement descriptionElem = fac.createOMElement( |
| new QName(SynapseConstants.SYNAPSE_NAMESPACE, "description")); |
| |
| if (processor.getDescription() != null) { |
| descriptionElem.setText(processor.getDescription()); |
| return descriptionElem; |
| } else { |
| return null; |
| } |
| } |
| |
| } |