/*
*
* 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.qpid.management.web.action;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.net.URI;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
import java.util.Properties;
import java.util.Map.Entry;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.namespace.QName;
import org.apache.muse.core.proxy.ProxyHandler;
import org.apache.muse.core.proxy.ReflectionProxyHandler;
import org.apache.muse.ws.addressing.EndpointReference;
import org.apache.qpid.management.Names;
import org.w3c.dom.Element;
public class WsdmPropertiesPerspectiveAction extends HttpServlet
{
private static final long serialVersionUID = -2411413147821629363L;
private ProxyHandler proxyHandler;
interface JavaToHtmlAdapter
{
String toHtml(Object javaObject);
}
private URI resourceUri;
private JavaToHtmlAdapter mapAdapter = new JavaToHtmlAdapter()
{
@SuppressWarnings("unchecked")
public String toHtml(Object javaObject)
{
Map<String,Object> value = (Map<String, Object>) javaObject;
if (value == null || value.isEmpty())
{
return "(empty)";
}
StringBuilder builder = new StringBuilder();
builder.append("<ul>");
for (Entry<String, Object> entry : value.entrySet())
{
builder
.append("<li>")
.append(entry.getKey())
.append(" = ")
.append(entry.getValue());
}
builder.append("</ul>");
return builder.toString();
}
};
private Map<String, JavaToHtmlAdapter> adapters = new HashMap<String, JavaToHtmlAdapter>();
@Override
public void init() throws ServletException
{
adapters.put(Map.class.getName(), mapAdapter);
adapters.put(HashMap.class.getName(),mapAdapter);
adapters.put(Properties.class.getName(),mapAdapter);
adapters.put(Hashtable.class.getName(),mapAdapter);
proxyHandler = new ReflectionProxyHandler();
proxyHandler.setAction("http://schemas.xmlsoap.org/ws/2004/09/mex/GetMetadata");
proxyHandler.setRequestName(new QName("http://schemas.xmlsoap.org/ws/2004/09/mex", "GetMetadata", Names.PREFIX));
proxyHandler.setRequestParameterNames(new QName[]{new QName("http://schemas.xmlsoap.org/ws/2004/09/mex", "Dialect", Names.PREFIX)});
proxyHandler.setResponseName(new QName("http://schemas.xmlsoap.org/ws/2004/09/mex", "Metadata", Names.PREFIX));
proxyHandler.setReturnType(Element[].class);
}
@SuppressWarnings("unchecked")
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
try
{
String resourceId = request.getParameter("resourceId");
ObjectName objectName = new ObjectName(resourceId);
String wsresourceid = objectName.getKeyProperty(Names.OBJECT_ID);
EndpointReference resourceEndpointReference = new EndpointReference(getURI(request));
resourceEndpointReference.addParameter(
Names.RESOURCE_ID_QNAME,
wsresourceid);
// WsResourceClient resourceClient = new WsResourceClient(resourceEndpointReference);
// Element wsdl = ((Element[])resourceClient.invoke(proxyHandler,WSDL_DIALECT))[0];
// Element rmd = ((Element[])resourceClient.invoke(proxyHandler,RMD_DIALECT))[0];
String [] keyProperties = objectName.getKeyPropertyListString().split(",");
MBeanServer server = ManagementFactory.getPlatformMBeanServer();
MBeanInfo metadata = server.getMBeanInfo(objectName);
Map<String, String> attributes = getAttributes(server, objectName,metadata.getAttributes());
request.setAttribute("resourceId", resourceId);
request.setAttribute("metadata",metadata);
request.setAttribute("nameAttributes",keyProperties);
request.setAttribute("attributes",attributes);
RequestDispatcher dispatcher = request.getRequestDispatcher("/wsdm_properties_perspective.jsp");
dispatcher.forward(request,response);
} catch(Exception exception)
{
request.setAttribute("errorMessage","Unable to detect the exact cause Please look at the reported stack trace below.");
request.setAttribute("exception",exception);
RequestDispatcher dispatcher = request.getRequestDispatcher("/error_page.jsp");
dispatcher.forward(request,response);
}
}
private URI getURI(HttpServletRequest request)
{
if (resourceUri == null)
{
StringBuilder builder = new StringBuilder();
builder
.append(request.getProtocol())
.append("//")
.append(request.getServerName())
.append(":")
.append(request.getServerPort())
.append("/qman/services/QManWsResource");
resourceUri = URI.create(builder.toString());
}
return resourceUri;
}
private Map<String, String> getAttributes(MBeanServer server, ObjectName name, MBeanAttributeInfo [] metadata) throws Exception
{
Map<String,String> result = new HashMap<String, String>(metadata.length);
for (MBeanAttributeInfo attribute : metadata)
{
Object value = server.getAttribute(name, attribute.getName());
result.put(attribute.getName(),getAdaptedValue(attribute.getType(), value));
}
return result;
}
private String getAdaptedValue(String type, Object value)
{
JavaToHtmlAdapter adapter = adapters.get(type);
return (adapter != null) ? adapter.toHtml(value) : String.valueOf(value);
}
}