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/*
* 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.tomcat.util.modeler.modules;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.management.ObjectName;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.digester.Digester;
import org.apache.tomcat.util.modeler.ManagedBean;
import org.apache.tomcat.util.modeler.Registry;
public class MbeansDescriptorsDigesterSource extends ModelerSource
{
private static final Log log =
LogFactory.getLog(MbeansDescriptorsDigesterSource.class);
private Registry registry;
private final List<ObjectName> mbeans = new ArrayList<>();
private static volatile Digester digester = null;
private static Digester createDigester() {
Digester digester = new Digester();
digester.setNamespaceAware(false);
digester.setValidating(false);
URL url = Registry.getRegistry(null, null).getClass().getResource
("/org/apache/tomcat/util/modeler/mbeans-descriptors.dtd");
digester.register
("-//Apache Software Foundation//DTD Model MBeans Configuration File",
url.toString());
// Configure the parsing rules
digester.addObjectCreate
("mbeans-descriptors/mbean",
"org.apache.tomcat.util.modeler.ManagedBean");
digester.addSetProperties
("mbeans-descriptors/mbean");
digester.addSetNext
("mbeans-descriptors/mbean",
"add",
"java.lang.Object");
digester.addObjectCreate
("mbeans-descriptors/mbean/attribute",
"org.apache.tomcat.util.modeler.AttributeInfo");
digester.addSetProperties
("mbeans-descriptors/mbean/attribute");
digester.addSetNext
("mbeans-descriptors/mbean/attribute",
"addAttribute",
"org.apache.tomcat.util.modeler.AttributeInfo");
digester.addObjectCreate
("mbeans-descriptors/mbean/notification",
"org.apache.tomcat.util.modeler.NotificationInfo");
digester.addSetProperties
("mbeans-descriptors/mbean/notification");
digester.addSetNext
("mbeans-descriptors/mbean/notification",
"addNotification",
"org.apache.tomcat.util.modeler.NotificationInfo");
digester.addObjectCreate
("mbeans-descriptors/mbean/notification/descriptor/field",
"org.apache.tomcat.util.modeler.FieldInfo");
digester.addSetProperties
("mbeans-descriptors/mbean/notification/descriptor/field");
digester.addSetNext
("mbeans-descriptors/mbean/notification/descriptor/field",
"addField",
"org.apache.tomcat.util.modeler.FieldInfo");
digester.addCallMethod
("mbeans-descriptors/mbean/notification/notification-type",
"addNotifType", 0);
digester.addObjectCreate
("mbeans-descriptors/mbean/operation",
"org.apache.tomcat.util.modeler.OperationInfo");
digester.addSetProperties
("mbeans-descriptors/mbean/operation");
digester.addSetNext
("mbeans-descriptors/mbean/operation",
"addOperation",
"org.apache.tomcat.util.modeler.OperationInfo");
digester.addObjectCreate
("mbeans-descriptors/mbean/operation/descriptor/field",
"org.apache.tomcat.util.modeler.FieldInfo");
digester.addSetProperties
("mbeans-descriptors/mbean/operation/descriptor/field");
digester.addSetNext
("mbeans-descriptors/mbean/operation/descriptor/field",
"addField",
"org.apache.tomcat.util.modeler.FieldInfo");
digester.addObjectCreate
("mbeans-descriptors/mbean/operation/parameter",
"org.apache.tomcat.util.modeler.ParameterInfo");
digester.addSetProperties
("mbeans-descriptors/mbean/operation/parameter");
digester.addSetNext
("mbeans-descriptors/mbean/operation/parameter",
"addParameter",
"org.apache.tomcat.util.modeler.ParameterInfo");
return digester;
}
public void setRegistry(Registry reg) {
this.registry=reg;
}
public void setSource( Object source ) {
this.source=source;
}
@Override
public List<ObjectName> loadDescriptors( Registry registry, String type,
Object source) throws Exception {
setRegistry(registry);
setSource(source);
execute();
return mbeans;
}
public void execute() throws Exception {
if (registry == null) {
registry = Registry.getRegistry(null, null);
}
InputStream stream = (InputStream) source;
if (digester == null) {
digester = createDigester();
}
ArrayList<ManagedBean> loadedMbeans = new ArrayList<>();
synchronized (digester) {
// Process the input file to configure our registry
try {
// Push our registry object onto the stack
digester.push(loadedMbeans);
digester.parse(stream);
} catch (Exception e) {
log.error("Error digesting Registry data", e);
throw e;
} finally {
digester.reset();
}
}
Iterator<ManagedBean> iter = loadedMbeans.iterator();
while (iter.hasNext()) {
registry.addManagedBean(iter.next());
}
}
}
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