func affinityPredicates() util.StringSet {
return util.NewStringSet(
"HostName",
"MatchNodeSelector",
"PodFitsPorts",
"PodFitsResources",
"NoDiskConflict",
// Ensures that all pods within the same service are hosted on minions within the same region as defined by the "region" label
factory.RegisterFitPredicate("ServiceAffinity", algorithm.NewServiceAffinityPredicate(factory.PodLister, factory.ServiceLister, factory.MinionLister, []string{"region"})),
// Fit is defined based on the presence of the "region" label on a minion, regardless of value.
factory.RegisterFitPredicate("NodeLabelPredicate", algorithm.NewNodeLabelPredicate(factory.MinionLister, []string{"region"}, true)),
)
}
// Registers a custom fit predicate with the algorithm registry.
// Returns the name, with which the predicate was registered.
func RegisterCustomFitPredicate(policy schedulerapi.PredicatePolicy) string {
var predicateFactory FitPredicateFactory
var ok bool
validatePredicateOrDie(policy)
// generate the predicate function, if a custom type is requested
if policy.Argument != nil {
if policy.Argument.ServiceAffinity != nil {
predicateFactory = func(args PluginFactoryArgs) algorithm.FitPredicate {
return algorithm.NewServiceAffinityPredicate(
args.PodLister,
args.ServiceLister,
args.NodeInfo,
policy.Argument.ServiceAffinity.Labels,
)
}
} else if policy.Argument.LabelsPresence != nil {
predicateFactory = func(args PluginFactoryArgs) algorithm.FitPredicate {
return algorithm.NewNodeLabelPredicate(
args.NodeInfo,
policy.Argument.LabelsPresence.Labels,
policy.Argument.LabelsPresence.Presence,
)
}
}
} else if predicateFactory, ok = fitPredicateMap[policy.Name]; ok {
// checking to see if a pre-defined predicate is requested
glog.V(2).Infof("Predicate type %s already registered, reusing.", policy.Name)
}
if predicateFactory == nil {
glog.Fatalf("Invalid configuration: Predicate type not found for %s", policy.Name)
}
return RegisterFitPredicateFactory(policy.Name, predicateFactory)
}