Example usage for org.apache.commons.pool2.impl BaseObjectPoolConfig DEFAULT_JMX_NAME_PREFIX

Introduction

In this page you can find the example usage for org.apache.commons.pool2.impl BaseObjectPoolConfig DEFAULT_JMX_NAME_PREFIX.

Prototype

String DEFAULT_JMX_NAME_PREFIX

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Document

The default value for the prefix used to name JMX enabled pools created with a configuration instance.

Usage

From source file:JDBCPool.dbcp.demo.sourcecode.BaseGenericObjectPool.java

/**
 * Registers the pool with the platform MBean server.
 * The registered name will be/*from  ww w  .  j av  a 2  s.c  om*/
 * <code>jmxNameBase + jmxNamePrefix + i</code> where i is the least
 * integer greater than or equal to 1 such that the name is not already
 * registered. Swallows MBeanRegistrationException, NotCompliantMBeanException
 * returning null.
 *
 * @param config Pool configuration
 * @param jmxNameBase default base JMX name for this pool
 * @param jmxNamePrefix name prefix
 * @return registered ObjectName, null if registration fails
 */
private ObjectName jmxRegister(BaseObjectPoolConfig config, String jmxNameBase, String jmxNamePrefix) {
    ObjectName objectName = null;
    MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
    int i = 1;
    boolean registered = false;
    String base = config.getJmxNameBase();
    if (base == null) {
        base = jmxNameBase;
    }
    while (!registered) {
        try {
            ObjectName objName;
            // Skip the numeric suffix for the first pool in case there is
            // only one so the names are cleaner.
            if (i == 1) {
                objName = new ObjectName(base + jmxNamePrefix);
            } else {
                objName = new ObjectName(base + jmxNamePrefix + i);
            }
            mbs.registerMBean(this, objName);
            objectName = objName;
            registered = true;
        } catch (MalformedObjectNameException e) {
            if (BaseObjectPoolConfig.DEFAULT_JMX_NAME_PREFIX.equals(jmxNamePrefix)
                    && jmxNameBase.equals(base)) {
                // Shouldn't happen. Skip registration if it does.
                registered = true;
            } else {
                // Must be an invalid name. Use the defaults instead.
                jmxNamePrefix = BaseObjectPoolConfig.DEFAULT_JMX_NAME_PREFIX;
                base = jmxNameBase;
            }
        } catch (InstanceAlreadyExistsException e) {
            // Increment the index and try again
            i++;
        } catch (MBeanRegistrationException e) {
            // Shouldn't happen. Skip registration if it does.
            registered = true;
        } catch (NotCompliantMBeanException e) {
            // Shouldn't happen. Skip registration if it does.
            registered = true;
        }
    }
    return objectName;
}

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