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Merge pull request #80814 from xiaoanyunfei/cleanup/GeneralPredicates

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Use iteration to make the GeneralPredicates code cleaner
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Kubernetes Prow Robot 2019-08-27 00:52:40 -07:00 committed by GitHub
commit ead8e0c24e
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1 changed files with 16 additions and 35 deletions
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51
pkg/scheduler/algorithm/predicates/predicates.go
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@ -1195,20 +1195,14 @@ func haveOverlap(a1, a2 []string) bool {
// that only non-critical pods need and EssentialPredicates are the predicates that all pods, including critical pods, need
func GeneralPredicates(pod *v1.Pod, meta PredicateMetadata, nodeInfo *schedulernodeinfo.NodeInfo) (bool, []PredicateFailureReason, error) {
var predicateFails []PredicateFailureReason
fit, reasons, err := noncriticalPredicates(pod, meta, nodeInfo)
if err != nil {
return false, predicateFails, err
}
if !fit {
predicateFails = append(predicateFails, reasons...)
}
fit, reasons, err = EssentialPredicates(pod, meta, nodeInfo)
if err != nil {
return false, predicateFails, err
}
if !fit {
predicateFails = append(predicateFails, reasons...)
for _, predicate := range []FitPredicate{noncriticalPredicates, EssentialPredicates} {
fit, reasons, err := predicate(pod, meta, nodeInfo)
if err != nil {
return false, predicateFails, err
}
if !fit {
predicateFails = append(predicateFails, reasons...)
}
}
return len(predicateFails) == 0, predicateFails, nil
@ -1231,31 +1225,18 @@ func noncriticalPredicates(pod *v1.Pod, meta PredicateMetadata, nodeInfo *schedu
// EssentialPredicates are the predicates that all pods, including critical pods, need
func EssentialPredicates(pod *v1.Pod, meta PredicateMetadata, nodeInfo *schedulernodeinfo.NodeInfo) (bool, []PredicateFailureReason, error) {
var predicateFails []PredicateFailureReason
fit, reasons, err := PodFitsHost(pod, meta, nodeInfo)
if err != nil {
return false, predicateFails, err
}
if !fit {
predicateFails = append(predicateFails, reasons...)
}
// TODO: PodFitsHostPorts is essential for now, but kubelet should ideally
// preempt pods to free up host ports too
fit, reasons, err = PodFitsHostPorts(pod, meta, nodeInfo)
if err != nil {
return false, predicateFails, err
}
if !fit {
predicateFails = append(predicateFails, reasons...)
for _, predicate := range []FitPredicate{PodFitsHost, PodFitsHostPorts, PodMatchNodeSelector} {
fit, reasons, err := predicate(pod, meta, nodeInfo)
if err != nil {
return false, predicateFails, err
}
if !fit {
predicateFails = append(predicateFails, reasons...)
}
}
fit, reasons, err = PodMatchNodeSelector(pod, meta, nodeInfo)
if err != nil {
return false, predicateFails, err
}
if !fit {
predicateFails = append(predicateFails, reasons...)
}
return len(predicateFails) == 0, predicateFails, nil
}