Class HpSelector

java.lang.Object

org.j7m.middleware.ha.HpSelector

public final class HpSelector
extends Object

Phase 2 high-performance candidate selector.

The selector is stateless and thread-safe. It scores candidates using lease freshness, locality, peer health, latency, success rate, load, and deterministic near-equal tie breaking.

Constructor Summary

Constructors

Constructor	Description
HpSelector()	Creates a selector with the default Phase 2 scoring weights.

Method Summary

Modifier and Type	Method	Description
HpSelection	select(List<org.j7m.middleware.api.ObjectRef> candidates, String localRuntimeId, List<org.j7m.middleware.registry.api.RegistryPeerStatus> peers, InvocationStatsView stats, Clock clock)	Selects the best candidate.

Methods inherited from class Object

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

Constructor Details

HpSelector

public HpSelector()

Creates a selector with the default Phase 2 scoring weights.

Method Details

select

public HpSelection select(List<org.j7m.middleware.api.ObjectRef> candidates,
 String localRuntimeId,
 List<org.j7m.middleware.registry.api.RegistryPeerStatus> peers,
 InvocationStatsView stats,
 Clock clock)

Selects the best candidate.

Parameters:

candidates - candidate references

localRuntimeId - local runtime id

peers - registry peers

stats - statistics view

clock - scoring clock

Returns:

selected candidate and scores