Java AttributeList類代碼示例

import javax.management.AttributeList; //導入依賴的package包/類
private void doTest(JMXConnector connector) throws IOException,
MalformedObjectNameException, ReflectionException,
InstanceAlreadyExistsException, MBeanRegistrationException,
MBeanException, NotCompliantMBeanException, InstanceNotFoundException, AttributeNotFoundException, InvalidAttributeValueException {
    MBeanServerConnection  mbsc = connector.getMBeanServerConnection();


    ObjectName objName = new ObjectName("com.redhat.test.jmx:type=NameMBean");
    System.out.println("DEBUG: Calling createMBean");
    mbsc.createMBean(Name.class.getName(), objName);

    System.out.println("DEBUG: Calling setAttributes");
    AttributeList attList = new AttributeList();
    attList.add(new Attribute("FirstName", ANY_NAME));
    attList.add(new Attribute("LastName", ANY_NAME));
    mbsc.setAttributes(objName, attList);
}
 

import javax.management.AttributeList; //導入依賴的package包/類
@Override
public AttributeList getAttributes(String[] attributeNames) {
  if (attributeNames == null || attributeNames.length == 0) 
    throw new IllegalArgumentException();
  
  updateMbeanInfoIfMetricsListChanged();
  
  AttributeList result = new AttributeList(attributeNames.length);
  for (String iAttributeName : attributeNames) {
    try {
      Object value = getAttribute(iAttributeName);
      result.add(new Attribute(iAttributeName, value));
    } catch (Exception e) {
      continue;
    } 
  }
  return result;
}
 

import javax.management.AttributeList; //導入依賴的package包/類
/**
 * Obtain and return the values of several attributes of this MBean.
 *
 * @param names Names of the requested attributes
 */
@Override
public AttributeList getAttributes(String names[]) {

    // Validate the input parameters
    if (names == null)
        throw new RuntimeOperationsException
            (new IllegalArgumentException("Attribute names list is null"),
             "Attribute names list is null");

    // Prepare our response, eating all exceptions
    AttributeList response = new AttributeList();
    for (int i = 0; i < names.length; i++) {
        try {
            response.add(new Attribute(names[i],getAttribute(names[i])));
        } catch (Exception e) {
            // Not having a particular attribute in the response
            // is the indication of a getter problem
        }
    }
    return (response);

}
 

import javax.management.AttributeList; //導入依賴的package包/類
/**
 * Set the values of several attributes of this MBean.
 *
 * @param attributes THe names and values to be set
 *
 * @return The list of attributes that were set and their new values
 */
@Override
public AttributeList setAttributes(AttributeList attributes) {
    AttributeList response = new AttributeList();

    // Validate the input parameters
    if (attributes == null)
        return response;
    
    // Prepare and return our response, eating all exceptions
    String names[] = new String[attributes.size()];
    int n = 0;
    Iterator<?> items = attributes.iterator();
    while (items.hasNext()) {
        Attribute item = (Attribute) items.next();
        names[n++] = item.getName();
        try {
            setAttribute(item);
        } catch (Exception e) {
            // Ignore all exceptions
        }
    }

    return (getAttributes(names));

}
 

import javax.management.AttributeList; //導入依賴的package包/類
/**
 * Obtain and return the values of several attributes of this MBean.
 *
 * @param names
 *            Names of the requested attributes
 */
@Override
public AttributeList getAttributes(String names[]) {

	// Validate the input parameters
	if (names == null)
		throw new RuntimeOperationsException(new IllegalArgumentException("Attribute names list is null"),
				"Attribute names list is null");

	// Prepare our response, eating all exceptions
	AttributeList response = new AttributeList();
	for (int i = 0; i < names.length; i++) {
		try {
			response.add(new Attribute(names[i], getAttribute(names[i])));
		} catch (Exception e) {
			// Not having a particular attribute in the response
			// is the indication of a getter problem
		}
	}
	return (response);

}
 

import javax.management.AttributeList; //導入依賴的package包/類
@Override
public AttributeList getAttributes(String[] attributeNames) {

	if (attributeNames == null) {
		throw new RuntimeOperationsException(new IllegalArgumentException("attributeNames[] cannot be null"),
				"Cannot call getAttributes with null attribute names");
	}
	AttributeList resultList = new AttributeList();

	if (attributeNames.length == 0) {
		return resultList;
	}

	for (String attributeName : attributeNames) {
		try {
			Object value = getAttribute(attributeName);
			resultList.add(new Attribute(attributeName, value));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	return (resultList);
}
 

import javax.management.AttributeList; //導入依賴的package包/類
/**
 * Obtain and return the values of several attributes of this MBean.
 *
 * @param names Names of the requested attributes
 */
public AttributeList getAttributes(String names[]) {

    // Validate the input parameters
    if (names == null)
        throw new RuntimeOperationsException
            (new IllegalArgumentException("Attribute names list is null"),
             "Attribute names list is null");

    // Prepare our response, eating all exceptions
    AttributeList response = new AttributeList();
    for (int i = 0; i < names.length; i++) {
        try {
            response.add(new Attribute(names[i],getAttribute(names[i])));
        } catch (Exception e) {
            ; // Not having a particular attribute in the response
            ; // is the indication of a getter problem
        }
    }
    return (response);

}
 

import javax.management.AttributeList; //導入依賴的package包/類
@Test
public void testSetAttribute() throws Exception {
    DynamicMBean proxy = JMX.newMBeanProxy(platformMBeanServer, threadPoolDynamicWrapperON, DynamicMBean.class);

    proxy.setAttribute(new Attribute(THREAD_COUNT, newThreadCount));

    assertEquals(newThreadCount, proxy.getAttribute(THREAD_COUNT));
    assertEquals(newThreadCount, threadPoolConfigBean.getThreadCount());

    AttributeList attributeList = new AttributeList();
    attributeList.add(new Attribute(THREAD_COUNT, threadCount));
    boolean bool = true;
    attributeList.add(new Attribute(TRIGGER_NEW_INSTANCE_CREATION, bool));
    proxy.setAttributes(attributeList);

    assertEquals(threadCount, threadPoolConfigBean.getThreadCount());
    assertEquals(bool, threadPoolConfigBean.isTriggerNewInstanceCreation());
}
 

import javax.management.AttributeList; //導入依賴的package包/類
public static double getProcessCpuLoad(MBeanServerConnection mbs)
    throws MalformedObjectNameException, NullPointerException, InstanceNotFoundException,
           ReflectionException, IOException {
  ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
  AttributeList list = mbs.getAttributes(name, new String[]{"ProcessCpuLoad"});

  if (list.isEmpty()) {
    return 0.0;
  }

  Attribute att = (Attribute) list.get(0);
  Double value = (Double) att.getValue();

  // usually takes a couple of seconds before we get real values
  if (value == -1.0) {
    return 0.0;
  }
  // returns a percentage value with 1 decimal point precision
  return ((int) (value * 1000) / 10.0);
}
 

import javax.management.AttributeList; //導入依賴的package包/類
public AttributeList getAttributes(ObjectName name,
        String[] attributes)
        throws InstanceNotFoundException,
        ReflectionException,
        IOException {
    if (logger.debugOn()) logger.debug("getAttributes",
            "name=" + name + ", attributes="
            + strings(attributes));

    final ClassLoader old = pushDefaultClassLoader();
    try {
        return connection.getAttributes(name,
                attributes,
                delegationSubject);

    } catch (IOException ioe) {
        communicatorAdmin.gotIOException(ioe);

        return connection.getAttributes(name,
                attributes,
                delegationSubject);
    } finally {
        popDefaultClassLoader(old);
    }
}
 

import javax.management.AttributeList; //導入依賴的package包/類
@Test
public void testReadAttributes() throws Exception {
    DynamicMBean proxy = JMX.newMBeanProxy(platformMBeanServer, threadPoolDynamicWrapperON, DynamicMBean.class);

    assertEquals(threadCount, proxy.getAttribute(THREAD_COUNT));

    assertEquals(threadPoolConfigBean.isTriggerNewInstanceCreation(),
            proxy.getAttribute(TRIGGER_NEW_INSTANCE_CREATION));

    AttributeList attributes = proxy.getAttributes(new String[] { THREAD_COUNT, TRIGGER_NEW_INSTANCE_CREATION });
    assertEquals(2, attributes.size());
    Attribute threadCountAttr = (Attribute) attributes.get(0);
    assertEquals(THREAD_COUNT, threadCountAttr.getName());
    assertEquals(threadCount, threadCountAttr.getValue());
    Attribute boolTestAttr = (Attribute) attributes.get(1);
    assertEquals(TRIGGER_NEW_INSTANCE_CREATION, boolTestAttr.getName());
    assertEquals(threadPoolConfigBean.isTriggerNewInstanceCreation(), boolTestAttr.getValue());

    MBeanInfo beanInfo = proxy.getMBeanInfo();
    assertEquals(2, beanInfo.getAttributes().length);
}
 

import javax.management.AttributeList; //導入依賴的package包/類
public AttributeList setAttributes(AttributeList attributes) {
  if (attributes == null)
    throw new RuntimeOperationsException(new IllegalArgumentException(
        LocalizedStrings.MX4JModelMBean_ATTRIBUTE_LIST_CANNOT_BE_NULL.toLocalizedString()));

  Logger logger = getLogger();

  AttributeList list = new AttributeList();
  for (Iterator i = attributes.iterator(); i.hasNext();) {
    Attribute attribute = (Attribute) i.next();
    String name = attribute.getName();
    try {
      setAttribute(attribute);
      list.add(attribute);
    } catch (Exception x) {
      if (logger.isEnabledFor(Logger.TRACE))
        logger.trace("setAttribute for attribute " + name + " failed", x);
      // And go on with the next one
    }
  }
  return list;
}
 

import javax.management.AttributeList; //導入依賴的package包/類
public static double getProcessCpuLoad() {
	double cpuLoad;
	try {
		MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
		ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
		AttributeList list = mbs.getAttributes(name, new String[] { "ProcessCpuLoad" });

		if(list.isEmpty()) {
			return Double.NaN;
		}

		Attribute att = (Attribute) list.get(0);
		Double value = (Double) att.getValue();

		if(value == -1.0) {
			return Double.NaN;
		}

		cpuLoad = value * 100d;
	} catch (InstanceNotFoundException | ReflectionException | MalformedObjectNameException err) {
		cpuLoad = Double.NaN;
	}

	return cpuLoad;
}
 

import javax.management.AttributeList; //導入依賴的package包/類
public AttributeList getAttributes(String[] attributeNames) 
{
       if(attributeNames != null)
       {
       	AttributeList resultList = new AttributeList();

        if (attributeNames.length == 0)
   	        return resultList;
       
        // Build the result attribute list
        for(int i=0 ; i<attributeNames.length; i++)
        {
            try 
            {        
                Object oValue = getAttribute(attributeNames[i]);     
                resultList.add(new Attribute(attributeNames[i], oValue));
            } 
            catch (Exception e) 
            {
            }
        }
        return resultList;
   	}
       return null;
}
 

import javax.management.AttributeList; //導入依賴的package包/類
@Override
public Object invoke(final String actionName, final Object[] params, final String[] signature)
        throws MBeanException, ReflectionException {
    if ("getAttribute".equals(actionName) && params.length == 1 && signature[0].equals(String.class.getName())) {
        try {
            return getAttribute((String) params[0]);
        } catch (final AttributeNotFoundException e) {
            throw new MBeanException(e, "Attribute not found on " + moduleIdentifier);
        }
    } else if ("getAttributes".equals(actionName) && params.length == 1
            && signature[0].equals(String[].class.getName())) {
        return getAttributes((String[]) params[0]);
    } else if ("setAttributes".equals(actionName) && params.length == 1
            && signature[0].equals(AttributeList.class.getName())) {
        return setAttributes((AttributeList) params[0]);
    } else {
        LOG.debug("Operation not found {} ", actionName);
        throw new UnsupportedOperationException(String.format(
                "Operation not found on %s. Method invoke is only supported for getInstance and getAttribute(s) "
                        + "method, got actionName %s, params %s, signature %s ",
                moduleIdentifier, actionName, params, signature));
    }
}