/*
* Licensed under the GPL License. You may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
* THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
package com.googlecode.psiprobe.tools;
import javax.management.AttributeNotFoundException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeData;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class JmxTools {
private static Log logger = LogFactory.getLog(JmxTools.class);
public static Object getAttribute(MBeanServer mBeanServer, ObjectName oName, String attrName) throws Exception {
try {
return mBeanServer.getAttribute(oName, attrName);
} catch (AttributeNotFoundException e) {
logger.error(oName + " does not have \""+attrName+"\" attribute");
return null;
}
}
public static long getLongAttr(MBeanServer mBeanServer, ObjectName oName, String attrName, long defaultValue) {
try {
Object o = mBeanServer.getAttribute(oName, attrName);
return o == null ? defaultValue : ((Long) o).longValue();
} catch (Exception e) {
return defaultValue;
}
}
public static long getLongAttr(MBeanServer mBeanServer, ObjectName oName, String attrName) throws Exception {
return ((Long) mBeanServer.getAttribute(oName, attrName)).longValue();
}
public static int getIntAttr(MBeanServer mBeanServer, ObjectName oName, String attrName) throws Exception {
return ((Integer) mBeanServer.getAttribute(oName, attrName)).intValue();
}
public static String getStringAttr(MBeanServer mBeanServer, ObjectName oName, String attrName) throws Exception {
Object o = getAttribute(mBeanServer, oName, attrName);
return o == null ? null : o.toString();
}
public static long getLongAttr(CompositeData cds, String name) {
Object o = cds.get(name);
if (o != null && o instanceof Long) {
return ((Long)o).longValue();
} else {
return 0;
}
}
public static String getStringAttr(CompositeData cds, String name) {
Object o = cds.get(name);
return o != null ? o.toString() : null;
}
public static boolean getBooleanAttr(CompositeData cds, String name) {
Object o = cds.get(name);
return o != null && o instanceof Boolean && ((Boolean) o).booleanValue();
}
public static int getIntAttr(CompositeData cds, String name, int defaultValue) {
Object o = cds.get(name);
if (o != null && o instanceof Integer) {
return ((Integer)o).intValue();
} else {
return defaultValue;
}
}
public static boolean hasAttribute(MBeanServer server, ObjectName mbean, String attrName) throws Exception {
MBeanInfo info = server.getMBeanInfo(mbean);
MBeanAttributeInfo[] ai = info.getAttributes();
for (int i = 0; i < ai.length; i++) {
if (ai[i].getName().equals(attrName)) {
return true;
}
}
return false;
}
}