MBeanInfoAssembler.java 文件源码

/**
 * Gets the {@link ModelMBeanInfo} for the given managed bean
 *
 * @param defaultManagedBean  the default managed bean
 * @param customManagedBean   an optional custom managed bean
 * @param objectName   the object name
 * @return the model info, or <tt>null</tt> if not possible to create, for example due the managed bean is a proxy class
 * @throws JMException is thrown if error creating the model info
 */
public ModelMBeanInfo getMBeanInfo(Object defaultManagedBean, Object customManagedBean, String objectName) throws JMException {
    // skip proxy classes
    if (defaultManagedBean != null && Proxy.isProxyClass(defaultManagedBean.getClass())) {
        LOG.trace("Skip creating ModelMBeanInfo due proxy class {}", defaultManagedBean.getClass());
        return null;
    }

    // maps and lists to contain information about attributes and operations
    Map<String, ManagedAttributeInfo> attributes = new LinkedHashMap<String, ManagedAttributeInfo>();
    Set<ManagedOperationInfo> operations = new LinkedHashSet<ManagedOperationInfo>();
    Set<ModelMBeanAttributeInfo> mBeanAttributes = new LinkedHashSet<ModelMBeanAttributeInfo>();
    Set<ModelMBeanOperationInfo> mBeanOperations = new LinkedHashSet<ModelMBeanOperationInfo>();
    Set<ModelMBeanNotificationInfo> mBeanNotifications = new LinkedHashSet<ModelMBeanNotificationInfo>();

    // extract details from default managed bean
    if (defaultManagedBean != null) {
        extractAttributesAndOperations(defaultManagedBean.getClass(), attributes, operations);
        extractMbeanAttributes(defaultManagedBean, attributes, mBeanAttributes, mBeanOperations);
        extractMbeanOperations(defaultManagedBean, operations, mBeanOperations);
        extractMbeanNotifications(defaultManagedBean, mBeanNotifications);
    }

    // extract details from custom managed bean
    if (customManagedBean != null) {
        extractAttributesAndOperations(customManagedBean.getClass(), attributes, operations);
        extractMbeanAttributes(customManagedBean, attributes, mBeanAttributes, mBeanOperations);
        extractMbeanOperations(customManagedBean, operations, mBeanOperations);
        extractMbeanNotifications(customManagedBean, mBeanNotifications);
    }

    // create the ModelMBeanInfo
    String name = getName(customManagedBean != null ? customManagedBean : defaultManagedBean, objectName);
    String description = getDescription(customManagedBean != null ? customManagedBean : defaultManagedBean, objectName);
    ModelMBeanAttributeInfo[] arrayAttributes = mBeanAttributes.toArray(new ModelMBeanAttributeInfo[mBeanAttributes.size()]);
    ModelMBeanOperationInfo[] arrayOperations = mBeanOperations.toArray(new ModelMBeanOperationInfo[mBeanOperations.size()]);
    ModelMBeanNotificationInfo[] arrayNotifications = mBeanNotifications.toArray(new ModelMBeanNotificationInfo[mBeanNotifications.size()]);

    ModelMBeanInfo info = new ModelMBeanInfoSupport(name, description, arrayAttributes, null, arrayOperations, arrayNotifications);
    LOG.trace("Created ModelMBeanInfo {}", info);
    return info;
}