com.netflix.loadbalancer
Class ZoneAvoidanceRule

java.lang.Object
  com.netflix.loadbalancer.AbstractLoadBalancerRule
      com.netflix.loadbalancer.ClientConfigEnabledRoundRobinRule
          com.netflix.loadbalancer.PredicateBasedRule
              com.netflix.loadbalancer.ZoneAvoidanceRule

All Implemented Interfaces:

com.netflix.client.IClientConfigAware, IRule

public class ZoneAvoidanceRule
extends PredicateBasedRule

A rule that uses the a CompositePredicate to filter servers based on zone and availability. The primary predicate is composed of a ZoneAvoidancePredicate and AvailabilityPredicate, with the fallbacks to AvailabilityPredicate and an "always true" predicate returned from AbstractServerPredicate.alwaysTrue()

Constructor Summary

ZoneAvoidanceRule()

Method Summary

static java.util.Set<java.lang.String>	getAvailableZones(LoadBalancerStats lbStats, double triggeringLoad, double triggeringBlackoutPercentage)
static java.util.Set<java.lang.String>	getAvailableZones(java.util.Map<java.lang.String,ZoneSnapshot> snapshot, double triggeringLoad, double triggeringBlackoutPercentage)
AbstractServerPredicate	getPredicate() Method that provides an instance of AbstractServerPredicate to be used by this class.
void	initWithNiwsConfig(com.netflix.client.config.IClientConfig clientConfig)

Methods inherited from class com.netflix.loadbalancer.PredicateBasedRule

choose

Methods inherited from class com.netflix.loadbalancer.ClientConfigEnabledRoundRobinRule

setLoadBalancer

Methods inherited from class com.netflix.loadbalancer.AbstractLoadBalancerRule

getLoadBalancer

Methods inherited from class java.lang.Object

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

Constructor Detail

ZoneAvoidanceRule

public ZoneAvoidanceRule()

Method Detail

initWithNiwsConfig

public void initWithNiwsConfig(com.netflix.client.config.IClientConfig clientConfig)

Specified by:

initWithNiwsConfig in interface com.netflix.client.IClientConfigAware

Overrides:

initWithNiwsConfig in class ClientConfigEnabledRoundRobinRule

getAvailableZones

public static java.util.Set<java.lang.String> getAvailableZones(java.util.Map<java.lang.String,ZoneSnapshot> snapshot,
                                                                double triggeringLoad,
                                                                double triggeringBlackoutPercentage)

getAvailableZones

public static java.util.Set<java.lang.String> getAvailableZones(LoadBalancerStats lbStats,
                                                                double triggeringLoad,
                                                                double triggeringBlackoutPercentage)

getPredicate

public AbstractServerPredicate getPredicate()

Description copied from class: PredicateBasedRule

Method that provides an instance of AbstractServerPredicate to be used by this class.

Specified by:

getPredicate in class PredicateBasedRule