Example usage for org.springframework.jmx.support RegistrationPolicy REPLACE_EXISTING

Introduction

In this page you can find the example usage for org.springframework.jmx.support RegistrationPolicy REPLACE_EXISTING.

Prototype

RegistrationPolicy REPLACE_EXISTING

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Document

Registration should replace the affected MBean when attempting to register an MBean under a name that already exists.

Usage

From source file:org.springframework.jmx.support.MBeanRegistrationSupport.java

/**
 * Actually register the MBean with the server. The behavior when encountering
 * an existing MBean can be configured using {@link #setRegistrationPolicy}.
 * @param mbean the MBean instance//  w  w w .j a v  a  2s  .c  om
 * @param objectName the suggested ObjectName for the MBean
 * @throws JMException if the registration failed
 */
protected void doRegister(Object mbean, ObjectName objectName) throws JMException {
    Assert.state(this.server != null, "No MBeanServer set");
    ObjectName actualObjectName;

    synchronized (this.registeredBeans) {
        ObjectInstance registeredBean = null;
        try {
            registeredBean = this.server.registerMBean(mbean, objectName);
        } catch (InstanceAlreadyExistsException ex) {
            if (this.registrationPolicy == RegistrationPolicy.IGNORE_EXISTING) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Ignoring existing MBean at [" + objectName + "]");
                }
            } else if (this.registrationPolicy == RegistrationPolicy.REPLACE_EXISTING) {
                try {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Replacing existing MBean at [" + objectName + "]");
                    }
                    this.server.unregisterMBean(objectName);
                    registeredBean = this.server.registerMBean(mbean, objectName);
                } catch (InstanceNotFoundException ex2) {
                    logger.error("Unable to replace existing MBean at [" + objectName + "]", ex2);
                    throw ex;
                }
            } else {
                throw ex;
            }
        }

        // Track registration and notify listeners.
        actualObjectName = (registeredBean != null ? registeredBean.getObjectName() : null);
        if (actualObjectName == null) {
            actualObjectName = objectName;
        }
        this.registeredBeans.add(actualObjectName);
    }

    onRegister(actualObjectName, mbean);
}

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