Package cambio.simulator.entities.patterns

Class LoadBalancer

java.lang.Object

desmoj.core.simulator.NamedObject

desmoj.core.simulator.ModelComponent

desmoj.core.simulator.Schedulable

desmoj.core.simulator.Entity

cambio.simulator.entities.patterns.LoadBalancer

public final class LoadBalancer
extends desmoj.core.simulator.Entity

Wrapper Class for ILoadBalancingStrategy to encapsulate common behavior around it. E.g. capture last chosen MicroserviceInstance or distribution of messages

Author:

Lion Wagner

Field Summary

Fields inherited from class desmoj.core.simulator.Schedulable

_schedule

Constructor Summary

Constructors

Constructor	Description
LoadBalancer(desmoj.core.simulator.Model model, String name, boolean showInTrace, ILoadBalancingStrategy loadBalancingStrategy)	Creates a new instance of a loadbalancer that will use the given strategy.

Method Summary

Modifier and Type	Method	Description
MicroserviceInstance	getLastChosenInstance()
ILoadBalancingStrategy	getLoadBalancingStrategy()
MicroserviceInstance	getNextInstance(Collection<MicroserviceInstance> instances)	Retrieves the next candidate for receiving a request, consulting its ILoadBalancingStrategy.

Methods inherited from class desmoj.core.simulator.Entity

clone, generateTraceForScheduling, getIdentNumber, getQueueingPriority, getQueues, getScheduledEvents, isEqual, isLarger, isLargerOrEqual, isNotEqual, isQueued, isSimProcess, isSmaller, isSmallerOrEqual, schedule, schedule, schedule, schedule, schedule, schedule, schedule, schedule, schedule, scheduleAfter, scheduleAfter, scheduleAfter, scheduleBefore, scheduleBefore, scheduleBefore, schedulePreempt, schedulePreempt, schedulePreempt, setQueueingPriority

Methods inherited from class desmoj.core.simulator.Schedulable

assignReporter, cancel, getCorrespondingReportable, isCurrent, isScheduled, rename, reSchedule, reSchedule, reSchedulePreempt, scheduledNext, setCorrespondingReportable

Methods inherited from class desmoj.core.simulator.ModelComponent

current, currentEntity, currentEntityAll, currentEvent, currentlySendDebugNotes, currentlySendTraceNotes, currentModel, currentSimProcess, debugIsOn, debugOff, debugOn, getModel, isExperimentCompatible, isModelCompatible, presentTime, sendDebugNote, sendMessage, sendTraceNote, sendWarning, skipTraceNote, skipTraceNote, traceIsOn, traceOff, traceOn

Methods inherited from class desmoj.core.simulator.NamedObject

getName, getQuotedName, toString

Methods inherited from class java.lang.Object

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

Constructor Details

LoadBalancer

public LoadBalancer(desmoj.core.simulator.Model model,
 String name,
 boolean showInTrace,
 ILoadBalancingStrategy loadBalancingStrategy)

Creates a new instance of a loadbalancer that will use the given strategy.

Method Details

getNextInstance

public MicroserviceInstance getNextInstance(Collection<MicroserviceInstance> instances)
                                     throws NoInstanceAvailableException

Retrieves the next candidate for receiving a request, consulting its ILoadBalancingStrategy.

Returns:

a potentially reachable MicroserviceInstance

Throws:

NoInstanceAvailableException - if no MicroserviceInstance is available to send requests to.

getLastChosenInstance

public MicroserviceInstance getLastChosenInstance()

getLoadBalancingStrategy

public ILoadBalancingStrategy getLoadBalancingStrategy()