/*
* Copyright 2000-2001,2004 The Apache Software Foundation.
*
* Licensed 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.jetspeed.portal.portlets.admin;
// Element Construction Set
import java.util.Enumeration;
import java.util.Properties;
import org.apache.ecs.ConcreteElement;
import org.apache.ecs.html.TD;
import org.apache.ecs.html.TR;
import org.apache.ecs.html.Table;
import org.apache.jetspeed.portal.PortletException;
import org.apache.jetspeed.portal.portlets.AbstractPortlet;
import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
import org.apache.jetspeed.services.logging.JetspeedLogger;
import org.apache.turbine.util.RunData;
/**
* Handles enumerating Portlets that are also applications
*
* @author <a href="mailto:burton@apache.org">Kevin A. Burton</a>
*/
public class JavaRuntimePortlet extends AbstractPortlet {
/**
* Static initialization of the logger for this class
*/
private static final JetspeedLogger logger = JetspeedLogFactoryService
.getLogger(JavaRuntimePortlet.class.getName());
public ConcreteElement getContent(RunData rundata) {
Table table = new Table().setWidth("100%");
try {
// get Runtime status
Runtime jvm = Runtime.getRuntime();
table.addElement(new TR().addElement(new TD("Free Memory (in bytes)"))
.addElement(new TD(Long.toString(jvm.freeMemory()))));
table.addElement(new TR().addElement(new TD("Total Memory (in bytes)"))
.addElement(new TD(Long.toString(jvm.totalMemory()))));
// get the system properties (It can throw a SecurityException)
Properties props = System.getProperties();
Enumeration enu = props.propertyNames();
while (enu.hasMoreElements()) {
Object key = enu.nextElement();
if (!(key instanceof String)) {
continue;
}
Object value = props.getProperty(key.toString());
table.addElement(new TR().addElement(new TD(key.toString()))
.addElement(new TD(value.toString())));
}
} catch (Throwable t) {
logger.error("Throwable", t);
table.addElement(new TR().addElement(new TD("Error")).addElement(
new TD("Could not read system properties")));
}
return table;
}
/**
* @author <a href="mailto:burton@apache.org">Kevin A. Burton</a>
* @version $Id: JavaRuntimePortlet.java,v 1.18 2004/02/23 03:26:19 jford Exp $
*/
public void init() throws PortletException {
this.setTitle("Java Runtime");
this.setDescription("Information about your Java Runtime");
}
public boolean getAllowEdit(RunData rundata) {
return false;
}
public boolean getAllowMaximize(RunData rundata) {
return false;
}
}