private boolean isMBeanInfoCompliant(MBeanMetaData metadata) {
Logger logger = getLogger();
if (metadata.info == null) {
if (logger.isEnabledFor(Logger.DEBUG)) logger.debug("MBeanInfo is null");
return false;
}
return true;
}
private boolean isMBeanTypeCompliant(MBeanMetaData metadata) {
Logger logger = getLogger();
if (metadata.standard && metadata.dynamic) {
if (logger.isEnabledFor(Logger.DEBUG)) logger.debug("MBean is both standard and dynamic");
return false;
}
if (!metadata.standard && !metadata.dynamic) {
if (logger.isEnabledFor(Logger.DEBUG)) logger.debug("MBean is not standard nor dynamic");
return false;
}
return true;
}
private MBeanInvoker createInvoker(MBeanMetaData metadata) {
Logger logger = getLogger();
if (m_customMBeanInvoker != null) {
if (logger.isEnabledFor(Logger.TRACE))
logger.trace("Custom MBeanInvoker class is: " + m_customMBeanInvoker);
try {
MBeanInvoker mbeanInvoker =
(MBeanInvoker)
Thread.currentThread()
.getContextClassLoader()
.loadClass(m_customMBeanInvoker)
.newInstance();
if (logger.isEnabledFor(Logger.TRACE))
logger.trace("Using custom MBeanInvoker: " + mbeanInvoker);
return mbeanInvoker;
} catch (Exception x) {
if (logger.isEnabledFor(Logger.DEBUG))
logger.debug("Cannot instantiate custom MBeanInvoker, using default", x);
}
}
/* SFR
if (m_bcelClassesAvailable)
{
MBeanInvoker mbeanInvoker = BCELMBeanInvoker.create(metadata);
if (logger.isEnabledFor(Logger.TRACE)) logger.trace("Using default BCEL MBeanInvoker for MBean " + metadata.name + ", " + mbeanInvoker);
return mbeanInvoker;
}
else
{
*/
MBeanInvoker mbeanInvoker = new ReflectedMBeanInvoker();
if (logger.isEnabledFor(Logger.TRACE))
logger.trace(
"Using default Reflection MBeanInvoker for MBean " + metadata.name + ", " + mbeanInvoker);
return mbeanInvoker;
/* SFR } */
}
private MBeanDescription createMBeanDescription(MBeanMetaData metadata) {
// This is a non-standard extension
Logger logger = getLogger();
if (logger.isEnabledFor(Logger.TRACE))
logger.trace("Looking for standard MBean description...");
Class mbeanClass = metadata.mbean.getClass();
for (Class cls = mbeanClass; cls != null; cls = cls.getSuperclass()) {
String clsName = cls.getName();
if (clsName.startsWith("java.")) break;
// Use full qualified name only
String descrClassName = clsName + "MBeanDescription";
// Try to load the class
try {
Class descrClass = null;
ClassLoader loader = metadata.classloader;
if (loader != null) {
// Optimize lookup of the description class in case of MLets: we lookup the description
// class
// only in the classloader of the mbean, not in the whole CLR (since MLets delegates to
// the CLR)
if (loader.getClass() == MLet.class)
descrClass = ((MLet) loader).loadClass(descrClassName, null);
else descrClass = loader.loadClass(descrClassName);
} else {
descrClass = Class.forName(descrClassName, false, null);
}
Object descrInstance = descrClass.newInstance();
if (descrInstance instanceof MBeanDescription) {
MBeanDescription description = (MBeanDescription) descrInstance;
if (logger.isEnabledFor(Logger.TRACE))
logger.trace("Found provided standard MBean description: " + description);
return description;
}
} catch (ClassNotFoundException ignored) {
} catch (InstantiationException ignored) {
} catch (IllegalAccessException ignored) {
}
}
MBeanDescription description = DEFAULT_DESCRIPTION;
if (logger.isEnabledFor(Logger.TRACE))
logger.trace("Cannot find standard MBean description, using default: " + description);
return description;
}
private MBeanInfo getDynamicMBeanInfo(MBeanMetaData metadata) {
Logger logger = getLogger();
MBeanInfo info = null;
try {
info = ((DynamicMBean) metadata.mbean).getMBeanInfo();
} catch (Exception x) {
if (logger.isEnabledFor(Logger.DEBUG)) logger.debug("getMBeanInfo threw: " + x.toString());
}
if (logger.isEnabledFor(Logger.TRACE)) logger.trace("Dynamic MBeanInfo is: " + info);
if (info == null) {
if (logger.isEnabledFor(Logger.DEBUG)) logger.debug("MBeanInfo cannot be null");
return null;
}
return info;
}
private MBeanAttributeInfo[] createMBeanAttributeInfo(
MBeanMetaData metadata, MBeanDescription description) {
Logger logger = getLogger();
HashMap attributes = new HashMap();
HashMap getterNames = new HashMap();
Method[] methods = metadata.management.getMethods();
for (int j = 0; j < methods.length; ++j) {
Method method = methods[j];
if (Utils.isAttributeGetter(method)) {
String name = method.getName();
boolean isIs = name.startsWith("is");
String attribute = null;
if (isIs) attribute = name.substring(2);
else attribute = name.substring(3);
String descr = description == null ? null : description.getAttributeDescription(attribute);
MBeanAttributeInfo info = (MBeanAttributeInfo) attributes.get(attribute);
if (info != null) {
// JMX spec does not allow overloading attributes.
// If an attribute with the same name already exists the MBean is not compliant
if (!info.getType().equals(method.getReturnType().getName())) {
if (logger.isEnabledFor(Logger.DEBUG))
logger.debug("MBean is not compliant: has overloaded attribute " + attribute);
return null;
} else {
// They return the same value,
if (getterNames.get(name) != null) {
// This is the case of an attribute being present in multiple interfaces
// Ignore all but the first, since they resolve to the same method anyways
continue;
}
// there is a chance that one is a get-getter and one is a is-getter
// for a boolean attribute. In this case, the MBean is not compliant.
if (info.isReadable()) {
if (logger.isEnabledFor(Logger.DEBUG))
logger.debug("MBean is not compliant: has overloaded attribute " + attribute);
return null;
}
// MBeanAttributeInfo is already present due to a setter method, just update its
// readability
info =
new MBeanAttributeInfo(
attribute,
info.getType(),
info.getDescription(),
true,
info.isWritable(),
isIs);
}
} else {
info =
new MBeanAttributeInfo(
attribute, method.getReturnType().getName(), descr, true, false, isIs);
}
// Replace if exists
attributes.put(attribute, info);
getterNames.put(name, method);
} else if (Utils.isAttributeSetter(method)) {
String name = method.getName();
String attribute = name.substring(3);
String descr = description == null ? null : description.getAttributeDescription(attribute);
MBeanAttributeInfo info = (MBeanAttributeInfo) attributes.get(attribute);
if (info != null) {
// JMX spec does not allow overloading attributes.
// If an attribute with the same name already exists the MBean is not compliant
if (!info.getType().equals(method.getParameterTypes()[0].getName())) {
if (logger.isEnabledFor(Logger.DEBUG))
logger.debug("MBean is not compliant: has overloaded attribute " + attribute);
return null;
} else {
// MBeanAttributeInfo is already present due to a getter method, just update its
// writability
info =
new MBeanAttributeInfo(
info.getName(),
info.getType(),
info.getDescription(),
info.isReadable(),
true,
info.isIs());
}
} else {
info =
new MBeanAttributeInfo(
attribute, method.getParameterTypes()[0].getName(), descr, false, true, false);
}
// Replace if exists
attributes.put(attribute, info);
}
}
return (MBeanAttributeInfo[])
attributes.values().toArray(new MBeanAttributeInfo[attributes.size()]);
}
