javax.management.MBeanAttributeInfo Java Examples

private static void printAttrs(
        MBeanServerConnection mbsc1, Class<? extends Exception> expectX)
throws Exception {
    Set<ObjectName> names = mbsc1.queryNames(null, null);
    for (ObjectName name : names) {
        System.out.println(name + ":");
        MBeanInfo mbi = mbsc1.getMBeanInfo(name);
        MBeanAttributeInfo[] mbais = mbi.getAttributes();
        for (MBeanAttributeInfo mbai : mbais) {
            String attr = mbai.getName();
            Object value;
            try {
                value = mbsc1.getAttribute(name, attr);
            } catch (Exception e) {
                if (expectX != null && expectX.isInstance(e))
                    value = "<" + e + ">";
                else
                    throw e;
            }
            String s = "  " + attr + " = " + value;
            if (s.length() > 80)
                s = s.substring(0, 77) + "...";
            System.out.println(s);
        }
    }
}
 

public void printAllMatchedAttributes(String attrRegExp) throws Exception {
  err("List of the keys matching " + attrRegExp + " :");
  Object val = null;
  Pattern p = Pattern.compile(attrRegExp);
  for (ObjectName oname : hadoopObjectNames) {
    err(">>>>>>>>jmx name: " + oname.getCanonicalKeyPropertyListString());
    MBeanInfo mbinfo = mbsc.getMBeanInfo(oname);
    MBeanAttributeInfo[] mbinfos = mbinfo.getAttributes();
    for (MBeanAttributeInfo mb : mbinfos) {
      if (p.matcher(mb.getName()).lookingAt()) {
        val = mbsc.getAttribute(oname, mb.getName());
        System.out.format(format, mb.getName(), (val == null) ? "" : val.toString());
      }
    }
  }
}
 

/**
 * Gets the attribute name value map.
 * 
 * @param objName
 *            the obj name
 * @return the attribute name value map
 */
public Map<String, Object> getAttributes(ObjectName objName) {
	Map<String, Object> attrMap = null;
	try {
		MBeanInfo mbeanInfo = mbeanServerConnection.getMBeanInfo(objName);
		MBeanAttributeInfo[] mbeanAttributeInfo = mbeanInfo.getAttributes();
		attrMap = new HashMap<String, Object>();
		DecimalFormat df = new DecimalFormat("###.##");
		for (int i = 0; i < mbeanAttributeInfo.length; i++) {
			String attrName = mbeanAttributeInfo[i].getName();
			Object attrValue = getAttribute(objName,
					mbeanAttributeInfo[i].getName());
			if (mbeanAttributeInfo[i].getType().equals("double")) {
				attrValue = df.format((Double) getAttribute(objName,
						mbeanAttributeInfo[i].getName()));
			}
			attrMap.put(attrName, attrValue);
		}
	} catch (Exception e) {
		LOGGER.error(e.getMessage(), e);
	}
	return attrMap;
}
 

/** Get the type of an attribute of the object, from the metadata.
 *
 * @param oname
 * @param attName
 * @return null if metadata about the attribute is not found
 * @since 1.1
 */
public String getType( ObjectName oname, String attName )
{
    String type=null;
    MBeanInfo info=null;
    try {
        info=server.getMBeanInfo(oname);
    } catch (Exception e) {
        log.info( "Can't find metadata for object" + oname );
        return null;
    }

    MBeanAttributeInfo attInfo[]=info.getAttributes();
    for( int i=0; i<attInfo.length; i++ ) {
        if( attName.equals(attInfo[i].getName())) {
            type=attInfo[i].getType();
            return type;
        }
    }
    return null;
}
 

/**
 * print all attributes' values
 */
public void printAllValues() throws Exception {
  err("List of all the available keys:");

  Object val = null;

  for (ObjectName oname : hadoopObjectNames) {
    err(">>>>>>>>jmx name: " + oname.getCanonicalKeyPropertyListString());
    MBeanInfo mbinfo = mbsc.getMBeanInfo(oname);
    MBeanAttributeInfo[] mbinfos = mbinfo.getAttributes();

    for (MBeanAttributeInfo mb : mbinfos) {
      val = mbsc.getAttribute(oname, mb.getName());
      System.out.format(format, mb.getName(), (val==null)?"":val.toString());
    }
  }
}
 

private ModelNode getInfo(ObjectName objectName) {
    MBeanServerConnection connection = getConnection();
    ModelNode attributes = null;
    ModelNode headers = null;
    Exception exception = null;
    try {
        MBeanInfo mBeanInfo = connection.getMBeanInfo(objectName);
        MBeanAttributeInfo[] attributeInfos = mBeanInfo.getAttributes();
        ModelNode[] data = modelNodeAttributesInfo(attributeInfos, objectName);
        attributes = data[0];
        headers = data[1];
    } catch (Exception e) {
        if (e instanceof JMException || e instanceof JMRuntimeException) {
            exception = e;
        } else {
            throw new RuntimeException(e);
        }
    }
    return modelNodeResult(attributes, exception, headers);
}
 

@Override
public Map<String, Object> getStatistics() {
    try {
        MBeanInfo mBeanInfo = getConnection().getMBeanInfo(getMbeanName());
        String[] statAttrs = Arrays.asList(mBeanInfo.getAttributes()).stream()
          .filter(MBeanAttributeInfo::isReadable)
          .map(MBeanAttributeInfo::getName)
          .collect(Collectors.toList())
          .toArray(new String[] {});
        return getConnection().getAttributes(getMbeanName(), statAttrs)
          .asList()
          .stream()
          .collect(Collectors.toMap(Attribute::getName, Attribute::getValue));
    } catch (IOException | InstanceNotFoundException | ReflectionException | IntrospectionException ex) {
        throw new RuntimeException(ex);
    }
}
 

public static void main(String[] args) throws Exception {
    // Instantiate the MBean server
    //
    final MBeanAttributeInfo[]    atts   = makeAttInfos(attributes);
    final MBeanConstructorInfo[]  ctors  = makeCtorInfos(constructors);
    final MBeanOperationInfo[]    ops    = makeOpInfos(operations);
    final MBeanNotificationInfo[] notifs =
        makeNotifInfos(notificationclasses);

    for (int i=0; i<mbeanclasses.length;i++) {
        System.out.println("Create an MBeanInfo: " + mbeanclasses[i][0]);
        final MBeanInfo mbi =
            new MBeanInfo(mbeanclasses[i][1],mbeanclasses[i][0],
                          atts, ctors, ops, notifs);
    }

    // Test OK!
    //
    System.out.println("All MBeanInfo successfuly created!");
    System.out.println("Bye! Bye!");
}
 

public static void main(String[] args) throws Exception {
    // Instantiate the MBean server
    //
    final MBeanAttributeInfo[]    atts   = makeAttInfos(attributes);
    final MBeanConstructorInfo[]  ctors  = makeCtorInfos(constructors);
    final MBeanOperationInfo[]    ops    = makeOpInfos(operations);
    final MBeanNotificationInfo[] notifs =
        makeNotifInfos(notificationclasses);

    for (int i=0; i<mbeanclasses.length;i++) {
        System.out.println("Create an MBeanInfo: " + mbeanclasses[i][0]);
        final MBeanInfo mbi =
            new MBeanInfo(mbeanclasses[i][1],mbeanclasses[i][0],
                          atts, ctors, ops, notifs);
    }

    // Test OK!
    //
    System.out.println("All MBeanInfo successfuly created!");
    System.out.println("Bye! Bye!");
}
 

private MBeanInfo createMBeanInfo() {
	Collection<Counter> counters = counterMap.values();
	List<MBeanAttributeInfo> attributes = new ArrayList<>(counters.size());
	for (Counter c : counters) {
		if (!c.isVector()) {
			String typeName = "java.lang.String";
			synchronized (c) {
				Object value = c.getValue();
				if (value != null) {
					typeName = value.getClass().getName();
				}
			}
			attributes.add(new MBeanAttributeInfo(c.getName(), typeName,
					String.format("%s [%s,%s]", c.getName(), c.getUnits(), c.getVariability()), true, false,
					false));
		}
	}
	MBeanAttributeInfo[] attributesArray = attributes.toArray(new MBeanAttributeInfo[attributes.size()]);
	return new MBeanInfo(this.getClass().getName(),
			"An MBean exposing the available JVM Performance Counters as attributes.", attributesArray, null, null,
			null);
}
 

private void printMBeanInfo(MBeanInfo mbInfo) {
    System.out.println("Description " + mbInfo.getDescription());

    for (MBeanConstructorInfo ctor : mbInfo.getConstructors()) {
        System.out.println("Constructor " + ctor.getName());
    }

    for (MBeanAttributeInfo att : mbInfo.getAttributes()) {
        System.out.println("Attribute " + att.getName()
        + " [" + att.getType() + "]");
    }

    for (MBeanOperationInfo oper : mbInfo.getOperations()) {
        System.out.println("Operation " + oper.getName());
    }

    for (MBeanNotificationInfo notif : mbInfo.getNotifications()) {
        System.out.println("Notification " + notif.getName());
    }
}
 

/**
 * print all attributes' values
 */
public void printAllValues() throws Exception {
  err("List of all the available keys:");

  Object val = null;

  for (ObjectName oname : hadoopObjectNames) {
    err(">>>>>>>>jmx name: " + oname.getCanonicalKeyPropertyListString());
    MBeanInfo mbinfo = mbsc.getMBeanInfo(oname);
    MBeanAttributeInfo[] mbinfos = mbinfo.getAttributes();

    for (MBeanAttributeInfo mb : mbinfos) {
      val = mbsc.getAttribute(oname, mb.getName());
      System.out.format(format, mb.getName(), (val==null)?"":val.toString());
    }
  }
}
 

@Test
public void testHappyPath() throws MalformedObjectNameException, JMException {
  TestMbean testMbean = new TestMbean();
  ModelMBean mbean = defaultManagementMBeanAssembler.assemble(testMbean, new ObjectName("org.activiti.jmx.Mbeans:type=something"));
  assertNotNull(mbean);
  assertNotNull(mbean.getMBeanInfo());
  assertNotNull(mbean.getMBeanInfo().getAttributes());
  MBeanAttributeInfo[] attributes = mbean.getMBeanInfo().getAttributes();
  assertEquals(2, attributes.length);
  assertTrue((attributes[0].getName().equals("TestAttributeString") && attributes[1].getName().equals("TestAttributeBoolean") || (attributes[1].getName().equals("TestAttributeString") && attributes[0]
      .getName().equals("TestAttributeBoolean"))));
  assertNotNull(mbean.getMBeanInfo().getOperations());
  MBeanOperationInfo[] operations = mbean.getMBeanInfo().getOperations();
  assertNotNull(operations);
  assertEquals(3, operations.length);

}
 

@Test
public void returnsInfoAboutWritableAttributesInMBeanInfo() {
	MBeanWithSettableAttributes settableMBean = new MBeanWithSettableAttributes(10, 20, "data");
	DynamicMBean mbean = createDynamicMBeanFor(settableMBean);

	MBeanInfo mBeanInfo = mbean.getMBeanInfo();

	MBeanAttributeInfo[] attributesInfoArr = mBeanInfo.getAttributes();
	Map<String, MBeanAttributeInfo> nameToAttr = nameToAttribute(attributesInfoArr);

	assertEquals(3, nameToAttr.size());

	assertTrue(nameToAttr.containsKey("notSettableInt"));
	assertFalse(nameToAttr.get("notSettableInt").isWritable());

	assertTrue(nameToAttr.containsKey("settableInt"));
	assertTrue(nameToAttr.get("settableInt").isWritable());

	assertTrue(nameToAttr.containsKey("settableStr"));
	assertTrue(nameToAttr.get("settableStr").isWritable());
}
 

public static void main(String[] args) throws Exception {
    // Instantiate the MBean server
    //
    final MBeanAttributeInfo[]    atts   = makeAttInfos(attributes);
    final MBeanConstructorInfo[]  ctors  = makeCtorInfos(constructors);
    final MBeanOperationInfo[]    ops    = makeOpInfos(operations);
    final MBeanNotificationInfo[] notifs =
        makeNotifInfos(notificationclasses);

    for (int i=0; i<mbeanclasses.length;i++) {
        System.out.println("Create an MBeanInfo: " + mbeanclasses[i][0]);
        final MBeanInfo mbi =
            new MBeanInfo(mbeanclasses[i][1],mbeanclasses[i][0],
                          atts, ctors, ops, notifs);
    }

    // Test OK!
    //
    System.out.println("All MBeanInfo successfuly created!");
    System.out.println("Bye! Bye!");
}
 

private static void printAttrs(
        MBeanServerConnection mbsc1, Class<? extends Exception> expectX)
throws Exception {
    Set<ObjectName> names = mbsc1.queryNames(null, null);
    for (ObjectName name : names) {
        System.out.println(name + ":");
        MBeanInfo mbi = mbsc1.getMBeanInfo(name);
        MBeanAttributeInfo[] mbais = mbi.getAttributes();
        for (MBeanAttributeInfo mbai : mbais) {
            String attr = mbai.getName();
            Object value;
            try {
                value = mbsc1.getAttribute(name, attr);
            } catch (Exception e) {
                if (expectX != null && expectX.isInstance(e))
                    value = "<" + e + ">";
                else
                    throw e;
            }
            String s = "  " + attr + " = " + value;
            if (s.length() > 80)
                s = s.substring(0, 77) + "...";
            System.out.println(s);
        }
    }
}
 

public static void main(String[] args) throws Exception {
    // Instantiate the MBean server
    //
    final MBeanAttributeInfo[]    atts   = makeAttInfos(attributes);
    final MBeanConstructorInfo[]  ctors  = makeCtorInfos(constructors);
    final MBeanOperationInfo[]    ops    = makeOpInfos(operations);
    final MBeanNotificationInfo[] notifs =
        makeNotifInfos(notificationclasses);

    for (int i=0; i<mbeanclasses.length;i++) {
        System.out.println("Create an MBeanInfo: " + mbeanclasses[i][0]);
        final MBeanInfo mbi =
            new MBeanInfo(mbeanclasses[i][1],mbeanclasses[i][0],
                          atts, ctors, ops, notifs);
    }

    // Test OK!
    //
    System.out.println("All MBeanInfo successfuly created!");
    System.out.println("Bye! Bye!");
}
 

@Test
public void testHappyPath() throws MalformedObjectNameException, JMException {
    TestMbean testMbean = new TestMbean();
    ModelMBean mbean = defaultManagementMBeanAssembler.assemble(testMbean, new ObjectName("org.flowable.jmx.Mbeans:type=something"));
    assertNotNull(mbean);
    assertNotNull(mbean.getMBeanInfo());
    assertNotNull(mbean.getMBeanInfo().getAttributes());
    MBeanAttributeInfo[] attributes = mbean.getMBeanInfo().getAttributes();
    assertEquals(2, attributes.length);
    assertTrue((attributes[0].getName().equals("TestAttributeString") && attributes[1].getName().equals("TestAttributeBoolean") || (attributes[1].getName().equals("TestAttributeString") && attributes[0]
            .getName().equals("TestAttributeBoolean"))));
    assertNotNull(mbean.getMBeanInfo().getOperations());
    MBeanOperationInfo[] operations = mbean.getMBeanInfo().getOperations();
    assertNotNull(operations);
    assertEquals(3, operations.length);

}
 

private void set(final String cmd) {
    final String[] split = cmd.split(" ");
    if (split.length < 2) {
        streamManager.writeErr("you need to specify an attribute, an objectname and a value");
        return;
    }

    final MBeanServer mBeanServer = LocalMBeanServer.get();
    final String newValue = cmd.substring(split[0].length() + split[1].length() + 1).trim();
    try {
        final ObjectName oname = new ObjectName(split[1]);
        final MBeanInfo minfo = mBeanServer.getMBeanInfo(oname);
        final MBeanAttributeInfo attrs[] = minfo.getAttributes();

        String type = String.class.getName();
        for (int i = 0; i < attrs.length; i++) {
            if (attrs[i].getName().equals(split[0])) {
                type = attrs[i].getType();
                break;
            }
        }

        final Object valueObj = propertyEditorRegistry.getValue(type, newValue, Thread.currentThread().getContextClassLoader());
        mBeanServer.setAttribute(oname, new Attribute(split[0], valueObj));
        streamManager.writeOut("done");
    } catch (Exception ex) {
        streamManager.writeOut("Error - " + ex.toString());
    }
}
 

public cfData execute( cfSession _session, List<cfData> parameters )throws cfmRunTimeException{

 	String domain	= parameters.get(1).getString();
 	String type		= parameters.get(0).getString();

 	cfStructData	s	= new cfStructData();

 	try {
   	MBeanServerConnection mbs = ManagementFactory.getPlatformMBeanServer();

   	ObjectName name = new ObjectName( domain + ":type=" + type );

   	MBeanInfo meanInfo = mbs.getMBeanInfo( name );
   	
   	MBeanAttributeInfo[] mbeanAttributeInfo = meanInfo.getAttributes();
		
		for ( int x=0; x < mbeanAttributeInfo.length; x++ ){
			try{
				String key = mbeanAttributeInfo[x].getName();
				String dat = mbs.getAttribute( name, mbeanAttributeInfo[x].getName() ).toString();
				s.setData( key, new cfStringData(dat) );
			}catch(Exception ignore){}
		}
		
	} catch (Exception e) {
		throwException( _session, "Failed to retrieve the attributes: " + e.getMessage() );
	}
	
 	return s;
 }
 

/**
 * Deserializes a {@link ModelMBeanInfoSupport} from an {@link ObjectInputStream}.
 */
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
    if (compat) {
        // Read an object serialized in the old serial form
        //
        ObjectInputStream.GetField fields = in.readFields();
        modelMBeanDescriptor =
                (Descriptor) fields.get("modelMBeanDescriptor", null);
        if (fields.defaulted("modelMBeanDescriptor")) {
            throw new NullPointerException("modelMBeanDescriptor");
        }
        modelMBeanAttributes =
                (MBeanAttributeInfo[]) fields.get("mmbAttributes", null);
        if (fields.defaulted("mmbAttributes")) {
            throw new NullPointerException("mmbAttributes");
        }
        modelMBeanConstructors =
                (MBeanConstructorInfo[]) fields.get("mmbConstructors", null);
        if (fields.defaulted("mmbConstructors")) {
            throw new NullPointerException("mmbConstructors");
        }
        modelMBeanNotifications =
                (MBeanNotificationInfo[]) fields.get("mmbNotifications", null);
        if (fields.defaulted("mmbNotifications")) {
            throw new NullPointerException("mmbNotifications");
        }
        modelMBeanOperations =
                (MBeanOperationInfo[]) fields.get("mmbOperations", null);
        if (fields.defaulted("mmbOperations")) {
            throw new NullPointerException("mmbOperations");
        }
    } else {
        // Read an object serialized in the new serial form
        //
        in.defaultReadObject();
    }
}
 

@Test
public void testNickNameIsExposed() throws Exception {
	ModelMBeanInfo inf = (ModelMBeanInfo) getMBeanInfo();
	MBeanAttributeInfo attr = inf.getAttribute("NickName");

	assertNickName(attr);
}
 

@Test
public void testNickNameIsExposed() throws Exception {
	ModelMBeanInfo inf = (ModelMBeanInfo) getMBeanInfo();
	MBeanAttributeInfo attr = inf.getAttribute("NickName");
	assertNotNull("Nick Name should not be null", attr);
	assertTrue("Nick Name should be writable", attr.isWritable());
	assertTrue("Nick Name should be readable", attr.isReadable());
}
 

private MBeanNode getMBeanNode(ObjectName name) throws JMException {
	final String mbeanName = name.toString();
	final MBeanInfo mbeanInfo = mbeanServer.getMBeanInfo(name);
	final String description = formatDescription(mbeanInfo.getDescription());
	final MBeanAttributeInfo[] attributeInfos = mbeanInfo.getAttributes();
	final List<MBeanAttribute> attributes = getAttributes(name, attributeInfos);
	// les attributs seront triés par ordre alphabétique dans getMBeanNodes
	return new MBeanNode(mbeanName, description, attributes);
}
 

private void appendMbeanInformation( Map<String, List<MbeanAttributeModel>> mbeans, String selector ) throws Exception{
    Set<ObjectName> foundObjectNames = mbeanServer.queryNames( new ObjectName( selector ), null );

    for( ObjectName objectName : foundObjectNames ){
        MBeanInfo mbeanInfo = mbeanServer.getMBeanInfo( objectName );
        String name = objectName.getKeyProperty( "name" );
        if( name == null || mbeans.containsKey(name) ){
            name = name + ":" + mbeanInfo.getDescription();
        }
        List<MbeanAttributeModel> attributes = new ArrayList<>();
        mbeans.put( name, attributes );

        for( MBeanAttributeInfo attributeInfo : mbeanInfo.getAttributes() ){
            MbeanAttributeModel attribute = new MbeanAttributeModel();
            attribute.setName( attributeInfo.getName() );
            attribute.setDescription( attributeInfo.getDescription() );
            Object attr = null;
            try {
                attr = mbeanServer.getAttribute(objectName, attribute.getName());
            } catch (JMException jme) {
                log.warn("Error while getting attribute \"" + attribute.getName() + "\", ignoring, " + jme.getMessage());
            }
            attribute.setValue( attr );
            attributes.add( attribute );
        }
    }
}
 

private static void check(MBeanServer mbs, ObjectName on) throws Exception {
    MBeanInfo mbi = mbs.getMBeanInfo(on);

    // check the MBean itself
    check(mbi);

    // check attributes
    MBeanAttributeInfo[] attrs = mbi.getAttributes();
    for (MBeanAttributeInfo attr : attrs) {
        check(attr);
        if (attr.getName().equals("ReadOnly"))
            check("@Full", attr.getDescriptor(), expectedFullDescriptor);
    }

    // check operations
    MBeanOperationInfo[] ops = mbi.getOperations();
    for (MBeanOperationInfo op : ops) {
        check(op);
        check(op.getSignature());
    }

    MBeanConstructorInfo[] constrs = mbi.getConstructors();
    for (MBeanConstructorInfo constr : constrs) {
        check(constr);
        check(constr.getSignature());
    }
}
 

/**
 * Description of the specified attribute name.
 *
 * @param attributeName - stringified name of the attribute
 * @return the description
 */
public String describeAttribute(String attributeName) {
    String ret = "Attribute not found";
    try {
        MBeanAttributeInfo[] attributes = beanInfo.getAttributes();
        for (MBeanAttributeInfo attribute : attributes) {
            if (attribute.getName().equals(attributeName)) {
                return describeAttribute(attribute);
            }
        }
    } catch (Exception e) {
        throwException("Could not describe attribute '" + attributeName + "'. Reason: ", e);
    }
    return ret;
}
 

@Test
public void testNickNameIsExposed() throws Exception {
	ModelMBeanInfo inf = (ModelMBeanInfo) getMBeanInfo();
	MBeanAttributeInfo attr = inf.getAttribute("NickName");

	assertNickName(attr);
}
 

/**
 * Deserializes a {@link ModelMBeanInfoSupport} from an {@link ObjectInputStream}.
 */
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
    if (compat) {
        // Read an object serialized in the old serial form
        //
        ObjectInputStream.GetField fields = in.readFields();
        modelMBeanDescriptor =
                (Descriptor) fields.get("modelMBeanDescriptor", null);
        if (fields.defaulted("modelMBeanDescriptor")) {
            throw new NullPointerException("modelMBeanDescriptor");
        }
        modelMBeanAttributes =
                (MBeanAttributeInfo[]) fields.get("mmbAttributes", null);
        if (fields.defaulted("mmbAttributes")) {
            throw new NullPointerException("mmbAttributes");
        }
        modelMBeanConstructors =
                (MBeanConstructorInfo[]) fields.get("mmbConstructors", null);
        if (fields.defaulted("mmbConstructors")) {
            throw new NullPointerException("mmbConstructors");
        }
        modelMBeanNotifications =
                (MBeanNotificationInfo[]) fields.get("mmbNotifications", null);
        if (fields.defaulted("mmbNotifications")) {
            throw new NullPointerException("mmbNotifications");
        }
        modelMBeanOperations =
                (MBeanOperationInfo[]) fields.get("mmbOperations", null);
        if (fields.defaulted("mmbOperations")) {
            throw new NullPointerException("mmbOperations");
        }
    } else {
        // Read an object serialized in the new serial form
        //
        in.defaultReadObject();
    }
}
 

private static void testMXBean(MBeanServer mbs, ObjectName on)
        throws Exception {
    MBeanInfo mbi = mbs.getMBeanInfo(on);
    MBeanAttributeInfo[] attrs = mbi.getAttributes();
    int nattrs = attrs.length;
    if (mbi.getAttributes().length != 1)
        failure("wrong number of attributes: " + attrs);
    else {
        MBeanAttributeInfo mbai = attrs[0];
        if (mbai.getName().equals("Ints")
            && mbai.isReadable() && !mbai.isWritable()
            && mbai.getDescriptor().getFieldValue("openType")
                .equals(new ArrayType<int[]>(SimpleType.INTEGER, true))
            && attrs[0].getType().equals("[I"))
            success("MBeanAttributeInfo");
        else
            failure("MBeanAttributeInfo: " + mbai);
    }

    int[] ints = (int[]) mbs.getAttribute(on, "Ints");
    if (equal(ints, new int[] {1, 2, 3}, null))
        success("getAttribute");
    else
        failure("getAttribute: " + Arrays.toString(ints));

    ExplicitMXBean proxy =
        JMX.newMXBeanProxy(mbs, on, ExplicitMXBean.class);
    int[] pints = proxy.getInts();
    if (equal(pints, new int[] {1, 2, 3}, null))
        success("getAttribute through proxy");
    else
        failure("getAttribute through proxy: " + Arrays.toString(pints));
}