/*
* 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.axis2.deployment;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.axis2.clustering.ClusterManager;
import org.apache.axis2.clustering.configuration.ConfigurationManager;
import org.apache.axis2.clustering.configuration.ConfigurationManagerListener;
import org.apache.axis2.clustering.context.ContextManager;
import org.apache.axis2.clustering.context.ContextManagerListener;
import org.apache.axis2.engine.AxisConfiguration;
import org.apache.axis2.i18n.Messages;
import javax.xml.namespace.QName;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* Builds a service description from OM
*/
public class ClusterBuilder extends DescriptionBuilder {
// private static final Log log = LogFactory.getLog(ClusterBuilder.class);
public ClusterBuilder(AxisConfiguration axisConfig) {
this.axisConfig = axisConfig;
}
public ClusterBuilder(InputStream serviceInputStream, AxisConfiguration axisConfig) {
super(serviceInputStream, axisConfig);
}
/**
* Populates service from corresponding OM.
*/
public void buildCluster(OMElement clusterElement) throws DeploymentException {
OMAttribute classNameAttr = clusterElement.getAttribute(new QName(TAG_CLASS_NAME));
if (classNameAttr == null) {
throw new DeploymentException(Messages.getMessage("classAttributeNotFound",
TAG_CLUSTER));
}
String className = classNameAttr.getAttributeValue();
ClusterManager clusterManager;
try {
Class clazz;
try {
clazz = Class.forName(className);
} catch (ClassNotFoundException e) {
throw new DeploymentException(Messages.getMessage("clusterImplNotFound",
className));
}
clusterManager = (ClusterManager) clazz.newInstance();
clusterManager.setConfigurationContext(configCtx);
//loading the parameters.
processParameters(clusterElement.getChildrenWithName(new QName(TAG_PARAMETER)),
clusterManager,
null);
//loading the ConfigurationManager
loadConfigManager(clusterElement, clusterManager);
// loading the ContextManager
loadContextManager(clusterElement, clusterManager);
axisConfig.setClusterManager(clusterManager);
} catch (InstantiationException e) {
throw new DeploymentException(Messages.getMessage("cannotLoadClusterImpl"));
} catch (IllegalAccessException e) {
throw new DeploymentException(e);
}
}
private void loadContextManager(OMElement clusterElement,
ClusterManager clusterManager) throws DeploymentException,
InstantiationException,
IllegalAccessException {
OMElement contextManagerEle =
clusterElement.getFirstChildWithName(new QName(TAG_CONTEXT_MANAGER));
if (contextManagerEle != null) {
// Load & set the ContextManager class
OMAttribute classNameAttr =
contextManagerEle.getAttribute(new QName(ATTRIBUTE_CLASS));
if (classNameAttr == null) {
throw new DeploymentException(Messages.getMessage("classAttributeNotFound",
TAG_CONTEXT_MANAGER));
}
String className = classNameAttr.getAttributeValue();
Class clazz;
try {
clazz = Class.forName(className);
} catch (ClassNotFoundException e) {
throw new DeploymentException(Messages.getMessage("clusterImplNotFound",
className));
}
ContextManager contextManager = (ContextManager) clazz.newInstance();
clusterManager.setContextManager(contextManager);
// Load & set the ContextManagerListener
OMElement listenerEle =
contextManagerEle.getFirstChildWithName(new QName(TAG_LISTENER));
if (listenerEle != null) {
classNameAttr = listenerEle.getAttribute(new QName(TAG_CLASS_NAME));
if (classNameAttr == null) {
throw new DeploymentException(Messages.getMessage("classAttributeNotFound",
TAG_LISTENER));
}
className = classNameAttr.getAttributeValue();
try {
clazz = Class.forName(className);
} catch (ClassNotFoundException e) {
throw new DeploymentException(Messages.getMessage("clusterImplNotFound",
className));
}
ContextManagerListener listener = (ContextManagerListener) clazz.newInstance();
contextManager.setContextManagerListener(listener);
} else {
throw new DeploymentException(Messages.getMessage("contextManagerListenerIsNull"));
}
//loading the parameters.
processParameters(contextManagerEle.getChildrenWithName(new QName(TAG_PARAMETER)),
contextManager,
null);
// Load the replication patterns to be excluded. We load the following structure.
/*<replication>
<defaults>
<exclude name="foo.bar.*"/>
</defaults>
<context class="org.apache.axis2.context.ConfigurationContext">
<exclude name="my.sandesha.*"/>
</context>
<context class="org.apache.axis2.context.ServiceGroupContext">
<exclude name="my.sandesha.*"/>
</context>
<context class="org.apache.axis2.context.ServiceContext">
<exclude name="my.sandesha.*"/>
</context>
</replication>*/
OMElement replicationEle =
contextManagerEle.getFirstChildWithName(new QName(TAG_REPLICATION));
if (replicationEle != null) {
// Process defaults
OMElement defaultsEle =
replicationEle.getFirstChildWithName(new QName(TAG_DEFAULTS));
if (defaultsEle != null) {
List defaults = new ArrayList();
for (Iterator iter = defaultsEle.getChildrenWithName(new QName(TAG_EXCLUDE));
iter.hasNext();) {
OMElement excludeEle = (OMElement) iter.next();
OMAttribute nameAtt = excludeEle.getAttribute(new QName(ATTRIBUTE_NAME));
defaults.add(nameAtt.getAttributeValue());
}
contextManager.setReplicationExcludePatterns(TAG_DEFAULTS, defaults);
}
// Process specifics
for (Iterator iter = replicationEle.getChildrenWithName(new QName(TAG_CONTEXT));
iter.hasNext();) {
OMElement contextEle = (OMElement) iter.next();
String ctxClassName =
contextEle.getAttribute(new QName(ATTRIBUTE_CLASS)).getAttributeValue();
List excludes = new ArrayList();
for (Iterator iter2 = contextEle.getChildrenWithName(new QName(TAG_EXCLUDE));
iter2.hasNext();) {
OMElement excludeEle = (OMElement) iter2.next();
OMAttribute nameAtt = excludeEle.getAttribute(new QName(ATTRIBUTE_NAME));
excludes.add(nameAtt.getAttributeValue());
}
contextManager.setReplicationExcludePatterns(ctxClassName, excludes);
}
}
}
}
private void loadConfigManager(OMElement clusterElement,
ClusterManager clusterManager) throws DeploymentException,
InstantiationException,
IllegalAccessException {
OMElement configManagerEle =
clusterElement.getFirstChildWithName(new QName(TAG_CONFIGURATION_MANAGER));
if (configManagerEle != null) {
OMAttribute classNameAttr = configManagerEle.getAttribute(new QName(ATTRIBUTE_CLASS));
if (classNameAttr == null) {
throw new DeploymentException(Messages.getMessage("classAttributeNotFound",
TAG_CONFIGURATION_MANAGER));
}
String className = classNameAttr.getAttributeValue();
Class clazz;
try {
clazz = Class.forName(className);
} catch (ClassNotFoundException e) {
throw new DeploymentException(Messages.getMessage("clusterImplNotFound",
className));
}
ConfigurationManager configurationManager =
(ConfigurationManager) clazz.newInstance();
clusterManager.setConfigurationManager(configurationManager);
OMElement listenerEle =
configManagerEle.getFirstChildWithName(new QName(TAG_LISTENER));
if (listenerEle != null) {
classNameAttr = listenerEle.getAttribute(new QName(TAG_CLASS_NAME));
if (classNameAttr == null) {
throw new DeploymentException(Messages.getMessage("clusterImplNotFound",
TAG_LISTENER));
}
className = classNameAttr.getAttributeValue();
try {
clazz = Class.forName(className);
} catch (ClassNotFoundException e) {
throw new DeploymentException(Messages.getMessage("configurationManagerListenerIsNull"));
}
ConfigurationManagerListener listener = (ConfigurationManagerListener) clazz
.newInstance();
listener.setConfigurationContext(configCtx);
configurationManager.setConfigurationManagerListener(listener);
} else {
throw new DeploymentException(Messages.getMessage("configurationManagerListenerIsNull"));
}
//updating the ConfigurationManager with the new ConfigurationContext
configurationManager.setConfigurationContext(configCtx);
//loading the parameters.
processParameters(configManagerEle.getChildrenWithName(new QName(TAG_PARAMETER)),
configurationManager,
null);
}
}
}