validation.go

Documentation: k8s.io/kubernetes/pkg/apis/node/validation

     1  /*
     2  Copyright 2019 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package validation
    18  
    19  import (
    20  	apivalidation "k8s.io/apimachinery/pkg/api/validation"
    21  	unversionedvalidation "k8s.io/apimachinery/pkg/apis/meta/v1/validation"
    22  	"k8s.io/apimachinery/pkg/util/validation/field"
    23  	"k8s.io/kubernetes/pkg/apis/core"
    24  	corevalidation "k8s.io/kubernetes/pkg/apis/core/validation"
    25  	"k8s.io/kubernetes/pkg/apis/node"
    26  )
    27  
    28  // ValidateRuntimeClass validates the RuntimeClass
    29  func ValidateRuntimeClass(rc *node.RuntimeClass) field.ErrorList {
    30  	allErrs := apivalidation.ValidateObjectMeta(&rc.ObjectMeta, false, apivalidation.NameIsDNSSubdomain, field.NewPath("metadata"))
    31  
    32  	for _, msg := range apivalidation.NameIsDNSLabel(rc.Handler, false) {
    33  		allErrs = append(allErrs, field.Invalid(field.NewPath("handler"), rc.Handler, msg))
    34  	}
    35  
    36  	if rc.Overhead != nil {
    37  		allErrs = append(allErrs, validateOverhead(rc.Overhead, field.NewPath("overhead"))...)
    38  	}
    39  	if rc.Scheduling != nil {
    40  		allErrs = append(allErrs, validateScheduling(rc.Scheduling, field.NewPath("scheduling"))...)
    41  	}
    42  
    43  	return allErrs
    44  }
    45  
    46  // ValidateRuntimeClassUpdate validates an update to the object
    47  func ValidateRuntimeClassUpdate(new, old *node.RuntimeClass) field.ErrorList {
    48  	allErrs := apivalidation.ValidateObjectMetaUpdate(&new.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))
    49  
    50  	allErrs = append(allErrs, apivalidation.ValidateImmutableField(new.Handler, old.Handler, field.NewPath("handler"))...)
    51  
    52  	return allErrs
    53  }
    54  
    55  func validateOverhead(overhead *node.Overhead, fldPath *field.Path) field.ErrorList {
    56  	// reuse the ResourceRequirements validation logic
    57  	return corevalidation.ValidateResourceRequirements(&core.ResourceRequirements{Limits: overhead.PodFixed}, nil, fldPath,
    58  		corevalidation.PodValidationOptions{})
    59  }
    60  
    61  func validateScheduling(s *node.Scheduling, fldPath *field.Path) field.ErrorList {
    62  	var allErrs field.ErrorList
    63  	if s.NodeSelector != nil {
    64  		allErrs = append(allErrs, unversionedvalidation.ValidateLabels(s.NodeSelector, fldPath.Child("nodeSelector"))...)
    65  	}
    66  	allErrs = append(allErrs, validateTolerations(s.Tolerations, fldPath.Child("tolerations"))...)
    67  	return allErrs
    68  }
    69  
    70  func validateTolerations(tolerations []core.Toleration, fldPath *field.Path) field.ErrorList {
    71  	allErrs := corevalidation.ValidateTolerations(tolerations, fldPath.Child("tolerations"))
    72  	// Ensure uniquenes of tolerations.
    73  	tolerationSet := map[core.Toleration]bool{}
    74  	for i, t := range tolerations {
    75  		// listKey includes the toleration fields identified as listKeys in the API.
    76  		listKey := core.Toleration{
    77  			Key:      t.Key,
    78  			Operator: t.Operator,
    79  			Value:    t.Value,
    80  			Effect:   t.Effect,
    81  		}
    82  		if tolerationSet[listKey] {
    83  			allErrs = append(allErrs, field.Duplicate(fldPath.Index(i), t))
    84  		} else {
    85  			tolerationSet[listKey] = true
    86  		}
    87  	}
    88  	return allErrs
    89  }
    90
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