CallMediatorFactory.java
/*
* 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.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.synapse.Mediator;
import org.apache.synapse.config.xml.endpoints.EndpointFactory;
import org.apache.synapse.endpoints.Endpoint;
import org.apache.synapse.mediators.builtin.CallMediator;
import javax.xml.namespace.QName;
import java.io.File;
import java.util.Properties;
/**
* Factory for {@link org.apache.synapse.mediators.builtin.CallMediator} instances.
* <p>
* The <call> element is used to send messages out of Synapse to some endpoint. In the simplest case,
* the place to send the message to is implicit in the message (via a property of the message itself)-
* that is indicated by the following:
* <pre>
* <call/>
* </pre>
*
* If the message is to be sent to a endpoint, then the following is used:
* <pre>
* <call>
* (endpointref | endpoint)
* </call>
* </pre>
* where the endpointref token refers to the following:
* <pre>
* <endpoint ref="name"/>
* </pre>
* and the endpoint token refers to an anonymous endpoint defined inline:
* <pre>
* <endpoint address="url"/>
* </pre>
* If the message is to be sent to an endpoint selected by load balancing across a set of endpoints,
* then it is indicated by the following:
* <pre>
* <call>
* <load-balance algorithm="uri">
* (endpointref | endpoint)+
* </load-balance>
* </call>
* </pre>
* Similarly, if the message is to be sent to an endpoint with failover semantics, then it is indicated by the following:
* <pre>
* <call>
* <failover>
* (endpointref | endpoint)+
* </failover>
* </call>
* </pre>
*/
public class CallMediatorFactory extends AbstractMediatorFactory {
private static final QName CALL_Q = new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "call");
private static final QName ENDPOINT_Q = new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "endpoint");
private static final QName BLOCKING_Q = new QName("blocking");
private static final QName ATT_INIT_AXIS2_CLIENT_OPTIONS = new QName("initAxis2ClientOptions");
private static final QName ATT_AXIS2XML = new QName("axis2xml");
private static final QName ATT_REPOSITORY = new QName("repository");
public Mediator createSpecificMediator(OMElement elem, Properties properties) {
CallMediator callMediator = new CallMediator();
// after successfully creating the mediator
// set its common attributes such as tracing etc
processAuditStatus(callMediator, elem);
OMElement epElement = elem.getFirstChildWithName(ENDPOINT_Q);
if (epElement != null) {
// create the endpoint and set it in the call mediator
Endpoint endpoint = EndpointFactory.getEndpointFromElement(epElement, true, properties);
if (endpoint != null) {
callMediator.setEndpoint(endpoint);
}
}
OMAttribute blockingAtt = elem.getAttribute(BLOCKING_Q);
if (blockingAtt != null) {
callMediator.setBlocking(Boolean.parseBoolean(blockingAtt.getAttributeValue()));
if (callMediator.isBlocking()) {
OMAttribute initAxis2ClientOptions = elem.getAttribute(ATT_INIT_AXIS2_CLIENT_OPTIONS);
OMAttribute axis2xmlAttr = elem.getAttribute(ATT_AXIS2XML);
OMAttribute repoAttr = elem.getAttribute(ATT_REPOSITORY);
if (initAxis2ClientOptions != null) {
callMediator.setInitClientOptions(Boolean.parseBoolean(initAxis2ClientOptions.getAttributeValue()));
}
if (axis2xmlAttr != null && axis2xmlAttr.getAttributeValue() != null) {
File axis2xml = new File(axis2xmlAttr.getAttributeValue());
if (axis2xml.exists() && axis2xml.isFile()) {
callMediator.setAxis2xml(axis2xmlAttr.getAttributeValue());
} else {
handleException("Invalid axis2.xml path: " + axis2xmlAttr.getAttributeValue());
}
}
if (repoAttr != null && repoAttr.getAttributeValue() != null) {
File repo = new File(repoAttr.getAttributeValue());
if (repo.exists() && repo.isDirectory()) {
callMediator.setClientRepository(repoAttr.getAttributeValue());
} else {
handleException("Invalid repository path: " + repoAttr.getAttributeValue());
}
}
}
}
return callMediator;
}
public QName getTagQName() {
return CALL_Q;
}
}