kieker.analysis.plugin.filter.forward

Class CountingFilter

java.lang.Object

kieker.analysis.analysisComponent.AbstractAnalysisComponent

kieker.analysis.plugin.AbstractPlugin

kieker.analysis.plugin.filter.AbstractFilterPlugin

kieker.analysis.plugin.filter.forward.CountingFilter

All Implemented Interfaces:

IAnalysisComponent, IFilterPlugin, IPlugin

public final class CountingFilter
extends AbstractFilterPlugin

An instance of this class receives any objects, increments an intern tread-safe counter without printing any message and delivers the unchanged objects to the output. The value of the counter can be retrieved by connected to the respective output port using a corresponding method.

Since:

1.4

Author:

Jan Waller, Nils Christian Ehmke

Nested Class Summary

Nested classes/interfaces inherited from interface kieker.analysis.plugin.IPlugin

IPlugin.PluginInputPortReference, IPlugin.STATE

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	INPUT_PORT_NAME_EVENTS The name of the input port receiving the incoming events.
static java.lang.String	OUTPUT_PORT_NAME_COUNT The name of the output port which delivers the current counter value.
static java.lang.String	OUTPUT_PORT_NAME_RELAYED_EVENTS The name of the output port passing the incoming events.

Fields inherited from class kieker.analysis.analysisComponent.AbstractAnalysisComponent

CONFIG_NAME, configuration, log, LOG, projectContext, recordsTimeUnitFromProjectContext

Constructor Summary

Constructors

Constructor and Description
CountingFilter(Configuration configuration, IProjectContext projectContext) Creates a new instance of this class using the given parameters.

Method Summary

Methods

Modifier and Type	Method and Description
Configuration	getCurrentConfiguration() This method should deliver a Configuration object containing the current configuration of this instance.
long	getMessageCount() Returns the number of objects received until now.
boolean	init() Initiates the start of a component.
void	inputEvent(java.lang.Object event) This method represents the input port of this filter.
PlainText	plainTextDisplay()
XYPlot	xyPlotDisplay()

Methods inherited from class kieker.analysis.plugin.filter.AbstractFilterPlugin

terminate

Methods inherited from class kieker.analysis.plugin.AbstractPlugin

areAllRepositoryPortsConnected, connect, connect, deliver, getAllDisplayNames, getAllInputPortNames, getAllOutputPortNames, getAllRepositoryPortNames, getConnectedPlugins, getCurrentRepositories, getDefaultConfiguration, getIncomingPlugins, getPluginDescription, getPluginName, getRepository, getState, isConnectionAllowed, notifyNewIncomingConnection, notifyNewOutgoingConnection, shutdown, start

Methods inherited from class kieker.analysis.analysisComponent.AbstractAnalysisComponent

getName

Methods inherited from class java.lang.Object

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

Methods inherited from interface kieker.analysis.plugin.IPlugin

connect, getAllDisplayNames, getAllInputPortNames, getAllOutputPortNames, getAllRepositoryPortNames, getConnectedPlugins, getCurrentRepositories, getName, getPluginDescription, getPluginName, getState

Field Detail

INPUT_PORT_NAME_EVENTS

public static final java.lang.String INPUT_PORT_NAME_EVENTS

The name of the input port receiving the incoming events.

See Also:

Constant Field Values

OUTPUT_PORT_NAME_RELAYED_EVENTS

public static final java.lang.String OUTPUT_PORT_NAME_RELAYED_EVENTS

The name of the output port passing the incoming events.

See Also:

Constant Field Values

OUTPUT_PORT_NAME_COUNT

public static final java.lang.String OUTPUT_PORT_NAME_COUNT

The name of the output port which delivers the current counter value.

See Also:

Constant Field Values

Constructor Detail

CountingFilter

public CountingFilter(Configuration configuration,
              IProjectContext projectContext)

Creates a new instance of this class using the given parameters.

Parameters:

configuration - The configuration for this component.

projectContext - The project context for this component.

Method Detail

getCurrentConfiguration

public final Configuration getCurrentConfiguration()

This method should deliver a Configuration object containing the current configuration of this instance. In other words: The constructor should be able to use the given object to initialize a new instance of this class with the same intern properties.

Specified by:

getCurrentConfiguration in interface IAnalysisComponent

Specified by:

getCurrentConfiguration in interface IPlugin

Specified by:

getCurrentConfiguration in class AbstractAnalysisComponent

Returns:

A completely filled configuration object.

getMessageCount

public final long getMessageCount()

Returns the number of objects received until now.

Returns:

The current counter value.

inputEvent

public final void inputEvent(java.lang.Object event)

This method represents the input port of this filter.

Parameters:

event - The next event.

init

public boolean init()

Description copied from class: AbstractFilterPlugin

Initiates the start of a component. This method is called once when a AnalysisController's run() method is called. This implementation must not be blocking! Asynchronous consumers would spawn (an) asynchronous thread(s) in this method.

Specified by:

init in interface IPlugin

Overrides:

init in class AbstractFilterPlugin

Returns:

true on success; false otherwise.

plainTextDisplay

public final PlainText plainTextDisplay()

xyPlotDisplay

public final XYPlot xyPlotDisplay()