org.apache.hivemind.management.mbeans

Class PerformanceMonitorMBean

java.lang.Object

org.apache.hivemind.management.mbeans.AbstractDynamicMBean

org.apache.hivemind.management.mbeans.PerformanceMonitorMBean

All Implemented Interfaces:

javax.management.DynamicMBean, javax.management.MBeanRegistration, PerformanceCollector

public class PerformanceMonitorMBean
extends AbstractDynamicMBean
implements PerformanceCollector

MBean that holds and calculates the performance data for service method calls intercepted by the performanceMonitor interceptor. Creates for each intercepted method 5 MBean attributes: Number of Calls, Minimum, maximum, average and last execution time

Since:

1.1

Author:

Achim Huegen

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.String	DATA_TYPE_AVERAGE_TIME
protected static java.lang.String	DATA_TYPE_COUNT
protected static java.lang.String	DATA_TYPE_LAST_TIME
protected static java.lang.String	DATA_TYPE_MAXIMUM_TIME
protected static java.lang.String	DATA_TYPE_MINIMUM_TIME

Constructor Summary

Constructors

Constructor and Description
PerformanceMonitorMBean(java.util.Set methods) Creates a new instance

Method Summary

Methods

Modifier and Type	Method and Description
void	addMeasurement(org.apache.hivemind.service.MethodSignature method, long executionTime) Adds the measurement of a method execution
protected java.lang.String	buildAttributeName(org.apache.hivemind.service.MethodSignature method, java.lang.String performanceDataType) Builds the attribute name that holds the measurement data of type performanceDataType for the method.
protected java.lang.String	buildAttributeNameDefensive(org.apache.hivemind.service.MethodSignature method, java.lang.String performanceDataType) Builds the attribute name that holds the measurement data of type.
protected javax.management.MBeanAttributeInfo[]	createMBeanAttributeInfo() Provides the info which attributes the MBean has.
java.lang.Object	getAttribute(java.lang.String attribute)
protected void	initAttributes(java.util.List mBeanAttributeInfoList, org.apache.hivemind.management.mbeans.Counter counter, org.apache.hivemind.service.MethodSignature method) Creates for a intercepted method 5 MBean attributes: Number of Calls, Minimum, maximum, average and last execution time
protected void	initCounters() Builds two maps for accessing the counters by method signature and method id

Methods inherited from class org.apache.hivemind.management.mbeans.AbstractDynamicMBean

createMBeanConstructorInfo, createMBeanNotificationInfo, createMBeanOperationInfo, getAttributes, getMBeanClassName, getMBeanDescription, getMBeanInfo, getMBeanServer, invoke, postDeregister, postRegister, preDeregister, preRegister, setAttribute, setAttributes, setMBeanInfo

Methods inherited from class java.lang.Object

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

Field Detail

DATA_TYPE_MAXIMUM_TIME

protected static final java.lang.String DATA_TYPE_MAXIMUM_TIME

See Also:

Constant Field Values

DATA_TYPE_MINIMUM_TIME

protected static final java.lang.String DATA_TYPE_MINIMUM_TIME

See Also:

Constant Field Values

DATA_TYPE_LAST_TIME

protected static final java.lang.String DATA_TYPE_LAST_TIME

See Also:

Constant Field Values

DATA_TYPE_AVERAGE_TIME

protected static final java.lang.String DATA_TYPE_AVERAGE_TIME

See Also:

Constant Field Values

DATA_TYPE_COUNT

protected static final java.lang.String DATA_TYPE_COUNT

See Also:

Constant Field Values

Constructor Detail

PerformanceMonitorMBean

public PerformanceMonitorMBean(java.util.Set methods)

Creates a new instance

Parameters:

methods - Set with instances of MethodSignature. Contains the methods for that calls can be counted by this MBean

Method Detail

initCounters

protected void initCounters()

Builds two maps for accessing the counters by method signature and method id

initAttributes

protected void initAttributes(java.util.List mBeanAttributeInfoList,
                  org.apache.hivemind.management.mbeans.Counter counter,
                  org.apache.hivemind.service.MethodSignature method)

Creates for a intercepted method 5 MBean attributes: Number of Calls, Minimum, maximum, average and last execution time

buildAttributeName

protected java.lang.String buildAttributeName(org.apache.hivemind.service.MethodSignature method,
                                  java.lang.String performanceDataType)

Builds the attribute name that holds the measurement data of type performanceDataType for the method.

buildAttributeNameDefensive

protected java.lang.String buildAttributeNameDefensive(org.apache.hivemind.service.MethodSignature method,
                                           java.lang.String performanceDataType)

Builds the attribute name that holds the measurement data of type. performanceDataType for the method. Some jmx implementations (jboss 3.2.7) don't accept spaces and braces in attribute names. Unlike buildAttributeName(MethodSignature, String) this method doesn't use chars that are not accepted by Character.isJavaIdentifierPart(char).

addMeasurement

public void addMeasurement(org.apache.hivemind.service.MethodSignature method,
                  long executionTime)

Description copied from interface: PerformanceCollector

Adds the measurement of a method execution

Specified by:

addMeasurement in interface PerformanceCollector

Parameters:

method - the executed method

executionTime - the duration of the method execution

See Also:

PerformanceCollector.addMeasurement(MethodSignature, long)

createMBeanAttributeInfo

protected javax.management.MBeanAttributeInfo[] createMBeanAttributeInfo()

Description copied from class: AbstractDynamicMBean

Provides the info which attributes the MBean has. Should be overwritten by the descendants

Overrides:

createMBeanAttributeInfo in class AbstractDynamicMBean

getAttribute

public java.lang.Object getAttribute(java.lang.String attribute)
                              throws javax.management.AttributeNotFoundException,
                                     javax.management.MBeanException,
                                     javax.management.ReflectionException

Specified by:

getAttribute in interface javax.management.DynamicMBean

Overrides:

getAttribute in class AbstractDynamicMBean

Throws:

javax.management.AttributeNotFoundException

javax.management.MBeanException

javax.management.ReflectionException

See Also:

AbstractDynamicMBean.getAttribute(java.lang.String)