Class PollingServer

java.lang.Object

QueueNet.NodeSection

NodeSections.PipeSection

NodeSections.ServiceSection

NodeSections.PollingServer

Direct Known Subclasses:

ExhaustivePollingServer, GatedPollingServer, LimitedPollingServer

public class PollingServer
extends ServiceSection

This class implements a polling server. Every class has a specific distribution and a own set of statistical parameters. Every class has walk over (switchover) period

Author:

Ahmed Salem

Field Summary

Fields inherited from class NodeSection

EXCEPTION_MEASURE_DOES_NOT_EXIST, EXCEPTION_PROPERTY_NOT_AVAILABLE, INPUT, jobsList, logger, MSG_NOT_PROCESSED, MSG_PROCESSED, NO_ADDRESS, OUTPUT, PROPERTY_ID_ARRIVING_JOBS, PROPERTY_ID_AVERAGE_UTILIZATION, PROPERTY_ID_DEPARTING_JOBS, PROPERTY_ID_RESIDENCE_TIME, PROPERTY_ID_RESIDENT_JOBS, PROPERTY_ID_UTILIZATION, SERVICE

Constructor Summary

Constructors

Constructor	Description
PollingServer(Integer numberOfServers, Integer[] numberOfVisitsPerClass, ServiceStrategy[] serviceStrategies, ServiceStrategy[] switchOverStrategies)
PollingServer(Integer numberOfServers, Integer[] numberOfVisits, ServiceStrategy[] serviceStrategies, ServiceStrategy[] switchOverStrategies, Integer[] serverNumRequired, String[] serverNames, Integer[] serversPerServerType, Object[] serverCompatibilities, String schedulingPolicy)	Creates a new instance of PollingServer.

Method Summary

Modifier and Type	Method	Description
double	getDoubleSectionProperty(int id)	Gets a double type property of this node.
double	getDoubleSectionProperty(int id, JobClass jobClass)	Gets a double type property of this node depending on a specified job class.
ServiceStrategy[]	getServiceStrategies()	Gets the service strategy for each class.
protected void	nodeLinked(NetNode node)	This method should be overridden to implement a specific behaviour of the node section when the node section itself is linked to the owner node.
protected int	process(NetMessage message)	This method should be overridden to implement a specific NetMessage processor.

Methods inherited from class ServiceSection

sendBackward, sendBackward, sendForward, sendForward

Methods inherited from class NodeSection

analyze, analyze, analyzeFCR, analyzeFJ, analyzeJoin, analyzeTransition, getClassCompatibilities, getIntSectionProperty, getIntSectionProperty, getJobClasses, getJobInfoList, getObject, getObject, getOwnerNode, getParameter, getParameter, getSectionID, getServerTypes, isEnabled, isEnabled, isMine, isMyOwnerNode, redirect, removeMessage, send, send, send, send, send, send, sendAckAfterDrop, sendMe, sendMe, updateVisitPath

Methods inherited from class Object

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

Constructor Details

PollingServer

public PollingServer(Integer numberOfServers,
 Integer[] numberOfVisitsPerClass,
 ServiceStrategy[] serviceStrategies,
 ServiceStrategy[] switchOverStrategies)

PollingServer

public PollingServer(Integer numberOfServers,
 Integer[] numberOfVisits,
 ServiceStrategy[] serviceStrategies,
 ServiceStrategy[] switchOverStrategies,
 Integer[] serverNumRequired,
 String[] serverNames,
 Integer[] serversPerServerType,
 Object[] serverCompatibilities,
 String schedulingPolicy)

Creates a new instance of PollingServer.

Parameters:

numberOfServers - Number of jobs which can be served simultaneously.

numberOfVisits - Number of job visits per class (not used).

serviceStrategies - Array of service strategies, one per class.

switchOverStrategies - Array of switchover strategies, one per class

Method Details

getDoubleSectionProperty

public double getDoubleSectionProperty(int id)
                                throws NetException

Description copied from class: NodeSection

Gets a double type property of this node. Note that the first 256 identifiers are reserved by NodeSection class.

Overrides:

getDoubleSectionProperty in class NodeSection

Parameters:

id - Property identifier (see properties constants).

Returns:

Property value.

Throws:

NetException - if the requested property is not available.

getDoubleSectionProperty

public double getDoubleSectionProperty(int id,
 JobClass jobClass)
                                throws NetException

Description copied from class: NodeSection

Gets a double type property of this node depending on a specified job class. Note that the first 256 identifiers are reserved by NodeSection class.

Overrides:

getDoubleSectionProperty in class NodeSection

Parameters:

id - Property identifier (see properties constants).

jobClass - jobClass.

Returns:

Property value.

Throws:

NetException - if the requested property is not available.

nodeLinked

protected void nodeLinked(NetNode node)
                   throws NetException

Description copied from class: NodeSection

This method should be overridden to implement a specific behaviour of the node section when the node section itself is linked to the owner node. This method should be used to set node section properties depending on the owner node ones.

Overrides:

nodeLinked in class NodeSection

Parameters:

node - Owner node.

Throws:

NetException

process

protected int process(NetMessage message)
               throws NetException

Description copied from class: NodeSection

This method should be overridden to implement a specific NetMessage processor.

Specified by:

process in class NodeSection

Parameters:

message - message to be processed.

Returns:

message processing result.

Throws:

NetException

getServiceStrategies

public ServiceStrategy[] getServiceStrategies()

Gets the service strategy for each class.

Returns:

the service strategy for each class.