/*
* 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.endpoints;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.synapse.SynapseConstants;
import org.apache.synapse.config.xml.endpoints.utils.LoadbalanceAlgorithmFactory;
import org.apache.synapse.endpoints.Endpoint;
import org.apache.synapse.endpoints.SALoadbalanceEndpoint;
import org.apache.synapse.endpoints.algorithms.LoadbalanceAlgorithm;
import org.apache.synapse.endpoints.dispatch.Dispatcher;
import org.apache.synapse.endpoints.dispatch.HttpSessionDispatcher;
import org.apache.synapse.endpoints.dispatch.SimpleClientSessionDispatcher;
import org.apache.synapse.endpoints.dispatch.SoapSessionDispatcher;
import javax.xml.namespace.QName;
import java.util.List;
import java.util.Properties;
/**
* Creates {@link SALoadbalanceEndpoint} from an XML configuration.
*
* <endpoint [name="name"]>
* <session type="soap | ..other session types.." />
* <loadbalance policy="policy">
* <endpoint>+
* </loadbalance>
* </endpoint>
*/
public class SALoadbalanceEndpointFactory extends EndpointFactory {
private static SALoadbalanceEndpointFactory instance = new SALoadbalanceEndpointFactory();
private SALoadbalanceEndpointFactory() {}
public static SALoadbalanceEndpointFactory getInstance() {
return instance;
}
protected Endpoint createEndpoint(OMElement epConfig, boolean anonymousEndpoint,
Properties properties) {
// create the endpoint, manager and the algorithms
SALoadbalanceEndpoint loadbalanceEndpoint = new SALoadbalanceEndpoint();
// get the session for this endpoint
OMElement sessionElement = epConfig.
getFirstChildWithName(new QName(SynapseConstants.SYNAPSE_NAMESPACE, "session"));
if (sessionElement != null) {
OMElement sessionTimeout = sessionElement.getFirstChildWithName(
new QName(SynapseConstants.SYNAPSE_NAMESPACE, "sessionTimeout"));
if (sessionTimeout != null) {
try {
loadbalanceEndpoint.setSessionTimeout(Long.parseLong(
sessionTimeout.getText().trim()));
} catch (NumberFormatException nfe) {
handleException("Invalid session timeout value : " + sessionTimeout.getText());
}
}
String type = sessionElement.getAttributeValue(new QName("type"));
if (type.equalsIgnoreCase("soap")) {
Dispatcher soapDispatcher = new SoapSessionDispatcher();
loadbalanceEndpoint.setDispatcher(soapDispatcher);
} else if (type.equalsIgnoreCase("http")) {
Dispatcher httpDispatcher = new HttpSessionDispatcher();
loadbalanceEndpoint.setDispatcher(httpDispatcher);
} else if (type.equalsIgnoreCase("simpleClientSession")) {
Dispatcher csDispatcher = new SimpleClientSessionDispatcher();
loadbalanceEndpoint.setDispatcher(csDispatcher);
}
} else {
handleException("Session affinity endpoints should " +
"have a session element in the configuration.");
}
// set endpoint name
OMAttribute name = epConfig.getAttribute(new QName(
org.apache.synapse.config.xml.XMLConfigConstants.NULL_NAMESPACE, "name"));
if (name != null) {
loadbalanceEndpoint.setName(name.getAttributeValue());
}
OMElement loadbalanceElement;
loadbalanceElement = epConfig.getFirstChildWithName
(new QName(SynapseConstants.SYNAPSE_NAMESPACE, "loadbalance"));
if(loadbalanceElement != null) {
// set endpoints
List<Endpoint> endpoints = getEndpoints(loadbalanceElement,
loadbalanceEndpoint, properties);
loadbalanceEndpoint.setChildren(endpoints);
// set load balance algorithm
LoadbalanceAlgorithm algorithm = LoadbalanceAlgorithmFactory.
createLoadbalanceAlgorithm(loadbalanceElement, endpoints);
loadbalanceEndpoint.setAlgorithm(algorithm);
// process the parameters
processProperties(loadbalanceEndpoint, epConfig);
return loadbalanceEndpoint;
}
return null;
}
}