Class ResourceDMBean

java.lang.Object

org.jgroups.jmx.ResourceDMBean

All Implemented Interfaces:

DynamicMBean

public class ResourceDMBean
extends Object
implements DynamicMBean

A DynamicMBean wrapping an annotated object instance and exposing attributes annotated with @ManagedAttribute and operations annotated with @ManagedOperation.

Author:

Chris Mills, Vladimir Blagojevic, Bela Ban

See Also:

• ManagedAttribute
• ManagedOperation
• MBean

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ResourceDMBean.Accessor
static class	ResourceDMBean.AttributeEntry
static class	ResourceDMBean.FieldAccessor
static final record	ResourceDMBean.MethodAccessor
static class	ResourceDMBean.NoopAccessor

Field Summary

Fields

Modifier and Type	Field	Description
protected final MBeanAttributeInfo[]	attrInfo
protected final HashMap<String, ResourceDMBean.AttributeEntry>	atts
protected List<Object>	components
protected final boolean	expose_all
protected static final Predicate<AccessibleObject>	FILTER
protected final Log	log
protected final Object	obj
protected static final List<Method>	OBJECT_METHODS
protected final MBeanOperationInfo[]	opInfo
protected final List<MBeanOperationInfo>	ops
protected static final Class<?>[]	primitives

Constructor Summary

Constructors

Constructor	Description
ResourceDMBean(Object instance)
ResourceDMBean(Object instance, Predicate<AccessibleObject> filter)

Method Summary

Modifier and Type	Method	Description
static void	dumpStats(Object obj, String prefix, Map<String,Object> map)
static void	dumpStats(Object obj, Map<String,Object> map)
protected void	exposeManagedAttribute(Method method, Object instance, String prefix)
protected void	findFields(Object instance, Predicate<AccessibleObject> filter, String prefix)
protected static ResourceDMBean.Accessor	findGetter(Object target, String attr_name)	Finds an accessor for an attribute.
protected void	findMethods(Object instance, Predicate<AccessibleObject> filter, String prefix)
static ResourceDMBean.Accessor	findSetter(Object target, String attr_name)	Finds an accessor for an attribute.
protected void	fixFields(Object instance)	Provides field-based getter and/or setters for all attributes in attrs if not present
void	forAllAttributes(BiConsumer<String, ResourceDMBean.AttributeEntry> c)
Object	getAttribute(String name)
AttributeList	getAttributes(String[] names)
protected static Class<?>	getClassForName(String name)
MBeanInfo	getMBeanInfo()
protected Attribute	getNamedAttribute(String name)
protected static TimeUnit	getTimeUnit(AccessibleObject ao)
protected static AttributeType	getType(AccessibleObject ao)
Object	invoke(String name, Object[] args, String[] sig)
static boolean	isFractional(Class<?> cl)
static boolean	isGetMethod(Method method)
static boolean	isIsMethod(Method method)
static boolean	isNumber(Class<?> cl)
static boolean	isNumeric(Class<?> cl)
static boolean	isSetMethod(Method method)
protected static String	prefix(String s, String prefix)
static String	prettyPrint(Object val, AccessibleObject a)
void	setAttribute(Attribute attribute)
AttributeList	setAttributes(AttributeList list)
protected boolean	setNamedAttribute(Attribute attribute)
protected static String	toLowerCase(String input)	Returns a string with the first letter being lowercase

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

primitives

protected static final Class<?>[] primitives

OBJECT_METHODS

protected static final List<Method> OBJECT_METHODS

expose_all

protected final boolean expose_all

log

protected final Log log

obj

protected final Object obj

components

protected List<Object> components

attrInfo

protected final MBeanAttributeInfo[] attrInfo

opInfo

protected final MBeanOperationInfo[] opInfo

atts

protected final HashMap<String, ResourceDMBean.AttributeEntry> atts

ops

protected final List<MBeanOperationInfo> ops

FILTER

protected static final Predicate<AccessibleObject> FILTER

Constructor Details

ResourceDMBean

public ResourceDMBean(Object instance)

ResourceDMBean

public ResourceDMBean(Object instance,
 Predicate<AccessibleObject> filter)

Method Details

getMBeanInfo

public MBeanInfo getMBeanInfo()

Specified by:

getMBeanInfo in interface DynamicMBean

forAllAttributes

public void forAllAttributes(BiConsumer<String, ResourceDMBean.AttributeEntry> c)

getAttribute

public Object getAttribute(String name)

Specified by:

getAttribute in interface DynamicMBean

setAttribute

public void setAttribute(Attribute attribute)

Specified by:

setAttribute in interface DynamicMBean

getAttributes

public AttributeList getAttributes(String[] names)

Specified by:

getAttributes in interface DynamicMBean

setAttributes

public AttributeList setAttributes(AttributeList list)

Specified by:

setAttributes in interface DynamicMBean

invoke

public Object invoke(String name,
 Object[] args,
 String[] sig)
              throws MBeanException,
ReflectionException

Specified by:

invoke in interface DynamicMBean

Throws:

MBeanException

ReflectionException

isSetMethod

public static boolean isSetMethod(Method method)

isGetMethod

public static boolean isGetMethod(Method method)

isIsMethod

public static boolean isIsMethod(Method method)

dumpStats

public static void dumpStats(Object obj,
 Map<String,Object> map)

dumpStats

public static void dumpStats(Object obj,
 String prefix,
 Map<String,Object> map)

prettyPrint

public static String prettyPrint(Object val,
 AccessibleObject a)

isNumeric

public static boolean isNumeric(Class<?> cl)

isFractional

public static boolean isFractional(Class<?> cl)

isNumber

public static boolean isNumber(Class<?> cl)

getType

protected static AttributeType getType(AccessibleObject ao)

getTimeUnit

protected static TimeUnit getTimeUnit(AccessibleObject ao)

getClassForName

protected static Class<?> getClassForName(String name)
                                   throws ClassNotFoundException

Throws:

ClassNotFoundException

findMethods

protected void findMethods(Object instance,
 Predicate<AccessibleObject> filter,
 String prefix)

fixFields

protected void fixFields(Object instance)

Provides field-based getter and/or setters for all attributes in attrs if not present

exposeManagedAttribute

protected void exposeManagedAttribute(Method method,
 Object instance,
 String prefix)

prefix

protected static String prefix(String s,
 String prefix)

findGetter

protected static ResourceDMBean.Accessor findGetter(Object target,
 String attr_name)

Finds an accessor for an attribute. Tries to find getAttrName(), isAttrName(), attrName() methods. If not found, tries to use reflection to get the value of attr_name. If still not found, creates a NullAccessor.

findSetter

public static ResourceDMBean.Accessor findSetter(Object target,
 String attr_name)

Finds an accessor for an attribute. Tries to find setAttrName(), attrName() methods. If not found, tries to use reflection to set the value of attr_name. If still not found, creates a NullAccessor.

toLowerCase

protected static String toLowerCase(String input)

Returns a string with the first letter being lowercase

findFields

protected void findFields(Object instance,
 Predicate<AccessibleObject> filter,
 String prefix)

getNamedAttribute

protected Attribute getNamedAttribute(String name)

setNamedAttribute

protected boolean setNamedAttribute(Attribute attribute)