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/*
* 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
*
* https://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 psiprobe.tools;
import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.IntrospectionException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanException;
import javax.management.MBeanInfo;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.ReflectionException;
import javax.management.RuntimeOperationsException;
import javax.management.openmbean.CompositeData;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The Class JmxTools.
*/
public final class JmxTools {
/** The Constant logger. */
private static final Logger logger = LoggerFactory.getLogger(JmxTools.class);
/**
* Prevent Instantiation.
*/
private JmxTools() {
// Prevent Instantiation
}
/**
* Gets the attribute. All exceptions default to null.
*
* @param mbeanServer the mbean server
* @param objectName the object name
* @param attributeName the attribute name
*
* @return the attribute
*/
public static Object getAttribute(MBeanServer mbeanServer, ObjectName objectName,
String attributeName) {
try {
return mbeanServer.getAttribute(objectName, attributeName);
} catch (AttributeNotFoundException e) {
logger.error("MBean Object '{}' does not have '{}' attribute", objectName, attributeName);
logger.trace("", e);
} catch (RuntimeOperationsException e) {
logger.error("MBean Object '{}' or Attribute '{}' are null", objectName, attributeName);
logger.trace("", e);
} catch (InstanceNotFoundException e) {
logger.error("MBean Object '{}' not registered", objectName);
logger.trace("", e);
} catch (MBeanException | ReflectionException e) {
logger.error("MBean Object '{}' not accessible", objectName);
logger.trace("", e);
}
return null;
}
/**
* Invoke mbean server method. All exceptions default to null.
*
* @param mbeanServer the mbean server
* @param objectName the object name
* @param method the method
* @param parameters the parameters
* @param signatures the signatures
*
* @return the object
*/
public static Object invoke(MBeanServer mbeanServer, ObjectName objectName, String method,
Object[] parameters, String[] signatures) {
try {
return mbeanServer.invoke(objectName, method, parameters, signatures);
} catch (InstanceNotFoundException e) {
logger.error("MBean Object '{}' not registered", objectName);
logger.trace("", e);
} catch (MBeanException | ReflectionException e) {
logger.error("MBean Object '{}' not accessible", objectName);
logger.trace("", e);
}
return null;
}
/**
* Gets the long attribute. Default value used if null or any exceptions.
*
* @param mbeanServer the mbean server
* @param objectName the object name
* @param attributeName the attribute name
* @param defaultValue the default value
*
* @return the long attr
*/
public static long getLongAttr(MBeanServer mbeanServer, ObjectName objectName,
String attributeName, long defaultValue) {
Object object = JmxTools.getAttribute(mbeanServer, objectName, attributeName);
return object == null ? defaultValue : (Long) object;
}
/**
* Gets the long attribute. Default value '0' if null or any exceptions.
*
* @param compositeData the composite data
* @param name the name
*
* @return the long attribute
*/
public static long getLongAttr(CompositeData compositeData, String name) {
Object object = compositeData.get(name);
return object instanceof Long ? (Long) object : 0;
}
/**
* Gets the long attribute. Default value '0' if null or any exceptions.
*
* @param mbeanServer the mbean server
* @param objectName the object name
* @param attributeName the attribute name
*
* @return the long attribute
*/
public static long getLongAttr(MBeanServer mbeanServer, ObjectName objectName,
String attributeName) {
Object object = JmxTools.getAttribute(mbeanServer, objectName, attributeName);
return object == null ? 0 : (Long) object;
}
/**
* Gets the int attribute. Default value '0' if null or any exceptions.
*
* @param mbeanServer the mbean server
* @param objectName the object name
* @param attributeName the attribute name
*
* @return the int attribute
*/
public static int getIntAttr(MBeanServer mbeanServer, ObjectName objectName,
String attributeName) {
Object object = JmxTools.getAttribute(mbeanServer, objectName, attributeName);
return object == null ? 0 : (Integer) object;
}
/**
* Gets the int attribute. Default to default value if not found.
*
* @param compositeData the composite data
* @param name the name
* @param defaultValue the default value
*
* @return the int attribute
*/
public static int getIntAttr(CompositeData compositeData, String name, int defaultValue) {
Object object = compositeData.get(name);
return object instanceof Integer ? (Integer) object : defaultValue;
}
/**
* Gets the string attribute. All exceptions default to null.
*
* @param mbeanServer the mbean server
* @param objectName the object name
* @param attributeName the attribute name
*
* @return the string attribute
*/
public static String getStringAttr(MBeanServer mbeanServer, ObjectName objectName,
String attributeName) {
Object object = JmxTools.getAttribute(mbeanServer, objectName, attributeName);
return object == null ? null : object.toString();
}
/**
* Gets the string attribute.
*
* @param compositeData the composite data
* @param name the name
*
* @return the string attribute
*/
public static String getStringAttr(CompositeData compositeData, String name) {
Object object = compositeData.get(name);
return object == null ? null : object.toString();
}
/**
* Gets the boolean attribute. All exceptions default to false.
*
* @param mbeanServer the mbean server
* @param objectName the object name
* @param attributeName the attribute name
*
* @return the string attribute
*/
public static boolean getBooleanAttr(MBeanServer mbeanServer, ObjectName objectName,
String attributeName) {
Object object = JmxTools.getAttribute(mbeanServer, objectName, attributeName);
return object instanceof Boolean && (Boolean) object;
}
/**
* Gets the boolean attribute.
*
* @param compositeData the composite data
* @param name the name
*
* @return the boolean attribute
*/
public static boolean getBooleanAttr(CompositeData compositeData, String name) {
Object object = compositeData.get(name);
return object instanceof Boolean && (Boolean) object;
}
/**
* Checks for attribute. All exceptions default to false.
*
* @param server the server
* @param mbean the mbean
* @param attributeName the attribute name
*
* @return true, if successful
*/
public static boolean hasAttribute(MBeanServer server, ObjectName mbean, String attributeName) {
try {
MBeanInfo info = server.getMBeanInfo(mbean);
for (MBeanAttributeInfo attributeInfo : info.getAttributes()) {
if (attributeInfo.getName().equals(attributeName)) {
return true;
}
}
} catch (InstanceNotFoundException e) {
logger.error("MBean Object '{}' not registered", mbean);
logger.trace("", e);
} catch (IntrospectionException | ReflectionException e) {
logger.error("MBean Object '{}' not accessible", mbean);
logger.trace("", e);
}
return false;
}
}
