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Optimize logic in EvenPodsSpread API validation

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This commit is contained in:
Wei Huang 2019-07-20 23:12:32 -07:00
parent a9d4eddcd1
commit cfd97ba070
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GPG Key ID: BE5E9752F8B6E005
1 changed files with 8 additions and 19 deletions
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27
pkg/apis/core/validation/validation.go
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@ -5703,16 +5703,10 @@ var (
supportedScheduleActions = sets.NewString(string(core.DoNotSchedule), string(core.ScheduleAnyway))
)
type spreadConstraintPair struct {
topologyKey string
whenUnsatisfiable core.UnsatisfiableConstraintAction
}
// validateTopologySpreadConstraints validates given TopologySpreadConstraints.
func validateTopologySpreadConstraints(constraints []core.TopologySpreadConstraint, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
var existingConstraintPairs []spreadConstraintPair
for i, constraint := range constraints {
subFldPath := fldPath.Index(i)
if err := ValidateMaxSkew(subFldPath.Child("maxSkew"), constraint.MaxSkew); err != nil {
@ -5725,14 +5719,8 @@ func validateTopologySpreadConstraints(constraints []core.TopologySpreadConstrai
allErrs = append(allErrs, err)
}
// tuple {topologyKey, whenUnsatisfiable} denotes one kind of spread constraint
pair := spreadConstraintPair{
topologyKey: constraint.TopologyKey,
whenUnsatisfiable: constraint.WhenUnsatisfiable,
}
if err := ValidateSpreadConstraintPair(subFldPath.Child("{topologyKey, whenUnsatisfiable}"), pair, existingConstraintPairs); err != nil {
if err := ValidateSpreadConstraintNotRepeat(subFldPath.Child("{topologyKey, whenUnsatisfiable}"), constraint, constraints[i+1:]); err != nil {
allErrs = append(allErrs, err)
} else {
existingConstraintPairs = append(existingConstraintPairs, pair)
}
}
@ -5763,12 +5751,13 @@ func ValidateWhenUnsatisfiable(fldPath *field.Path, action core.UnsatisfiableCon
return nil
}
// ValidateSpreadConstraintPair tests that if `pair` exists in `existingConstraintPairs`.
func ValidateSpreadConstraintPair(fldPath *field.Path, pair spreadConstraintPair, existingConstraintPairs []spreadConstraintPair) *field.Error {
for _, existingPair := range existingConstraintPairs {
if pair.topologyKey == existingPair.topologyKey &&
pair.whenUnsatisfiable == existingPair.whenUnsatisfiable {
return field.Duplicate(fldPath, pair)
// ValidateSpreadConstraintNotRepeat tests that if `constraint` duplicates with `existingConstraintPairs`
// on TopologyKey and WhenUnsatisfiable fields.
func ValidateSpreadConstraintNotRepeat(fldPath *field.Path, constraint core.TopologySpreadConstraint, restingConstraints []core.TopologySpreadConstraint) *field.Error {
for _, restingConstraint := range restingConstraints {
if constraint.TopologyKey == restingConstraint.TopologyKey &&
constraint.WhenUnsatisfiable == restingConstraint.WhenUnsatisfiable {
return field.Duplicate(fldPath, fmt.Sprintf("{%v, %v}", constraint.TopologyKey, constraint.WhenUnsatisfiable))
}
}
return nil