Package io.pcp.parfait

Interface Summary

Interface	Description
Counter
Monitor	A monitor is notified of any changes to the value of any Monitorable objects it is attached to.
Monitorable<T>	An interface to be implemented by any value that needs to be monitored using the Parfait monitoring system.
MonitorableRegistryListener
MonitoringView	An output bridge for a particular set of Monitorables.

Class Summary

Class	Description
AbstractMonitorable<T>	Convenience base class for implementing Monitorable.
CompositeCounter
CompositeMonitoringView
DynamicMonitoringView
JmxUtilities	Convenience mechanisms for locating MBeanServer classes.
MonitorableRegistry	A collection of Monitorables to be monitored by a given output source (or sources).
MonitoredConstant<T>	MonitoredConstant provides an implementation of Monitorable for simple values that are rarely (read: never) updated, once initialised.
MonitoredCounter	A MonitoredCounter is a useful implementation of Monitorable specifically for implementing long-valued counters.
MonitoredIntValue	Monitorable implementation for a free-running Integer value.
MonitoredLongValue	Monitorable implementation for a free-running Long value.
MonitoredValue<T>	MonitoredValue provides a convenient implementation of Monitorable for free-running values that are updatable through a single set method call.
MonitoringViewProperties
ParfaitAgent
PollingMonitoredValue<T>	Monitors the value returned by calls at the provided interval to the provided Supplier.
QuiescentRegistryListener	Designed to run code after the MonitorableRegistry has become quiet, in terms of addition of new metrics
Specification
SystemTimePoller	An implementation of Supplier to get the System time.
TimerScheduler
TimeWindow	A 'time bucket', used for counters which represent an event count or metric delta over a limited, sliding time window.
TimeWindowCounter	Counter which keeps track of the increments only over a particular TimeWindow, expiring old increments after the window has elapsed.
TimeWindowCounterBuilder	Factory class to produce multiple sets of TimeWindowCounters with a specific and consistent set of TimeWindows, and in turn produce PollingMonitoredValues which watch those TimeWindowCounters.

Enum Summary

Enum	Description
ValueSemantics	Possible semantics of the individual values of a metric.

Exception Summary

Exception	Description
JmxException	General base exception to be thrown on JMX errors.
MBeanServerException	Exception thrown when we cannot locate an instance of an MBeanServer
SpecificationException	General Specification parsing error exceptions.