github.com/enmand/kubernetes@v1.2.0-alpha.0/pkg/apis/experimental/v1alpha1/defaults.go (about)

     1  /*
     2  Copyright 2015 The Kubernetes Authors All rights reserved.
     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 v1alpha1
    18  
    19  import (
    20  	"k8s.io/kubernetes/pkg/api"
    21  	"k8s.io/kubernetes/pkg/util"
    22  )
    23  
    24  func addDefaultingFuncs() {
    25  	api.Scheme.AddDefaultingFuncs(
    26  		func(obj *APIVersion) {
    27  			if len(obj.APIGroup) == 0 {
    28  				obj.APIGroup = "experimental"
    29  			}
    30  		},
    31  		func(obj *DaemonSet) {
    32  			var labels map[string]string
    33  			if obj.Spec.Template != nil {
    34  				labels = obj.Spec.Template.Labels
    35  			}
    36  			// TODO: support templates defined elsewhere when we support them in the API
    37  			if labels != nil {
    38  				if len(obj.Spec.Selector) == 0 {
    39  					obj.Spec.Selector = labels
    40  				}
    41  				if len(obj.Labels) == 0 {
    42  					obj.Labels = labels
    43  				}
    44  			}
    45  		},
    46  		func(obj *Deployment) {
    47  			// Set DeploymentSpec.Replicas to 1 if it is not set.
    48  			if obj.Spec.Replicas == nil {
    49  				obj.Spec.Replicas = new(int)
    50  				*obj.Spec.Replicas = 1
    51  			}
    52  			strategy := &obj.Spec.Strategy
    53  			// Set default DeploymentStrategyType as RollingUpdate.
    54  			if strategy.Type == "" {
    55  				strategy.Type = RollingUpdateDeploymentStrategyType
    56  			}
    57  			if strategy.Type == RollingUpdateDeploymentStrategyType {
    58  				if strategy.RollingUpdate == nil {
    59  					rollingUpdate := RollingUpdateDeployment{}
    60  					strategy.RollingUpdate = &rollingUpdate
    61  				}
    62  				if strategy.RollingUpdate.MaxUnavailable == nil {
    63  					// Set default MaxUnavailable as 1 by default.
    64  					maxUnavailable := util.NewIntOrStringFromInt(1)
    65  					strategy.RollingUpdate.MaxUnavailable = &maxUnavailable
    66  				}
    67  				if strategy.RollingUpdate.MaxSurge == nil {
    68  					// Set default MaxSurge as 1 by default.
    69  					maxSurge := util.NewIntOrStringFromInt(1)
    70  					strategy.RollingUpdate.MaxSurge = &maxSurge
    71  				}
    72  			}
    73  			if obj.Spec.UniqueLabelKey == nil {
    74  				obj.Spec.UniqueLabelKey = new(string)
    75  				*obj.Spec.UniqueLabelKey = "deployment.kubernetes.io/podTemplateHash"
    76  			}
    77  		},
    78  		func(obj *Job) {
    79  			var labels map[string]string
    80  			if obj.Spec.Template != nil {
    81  				labels = obj.Spec.Template.Labels
    82  			}
    83  			// TODO: support templates defined elsewhere when we support them in the API
    84  			if labels != nil {
    85  				if len(obj.Spec.Selector) == 0 {
    86  					obj.Spec.Selector = labels
    87  				}
    88  				if len(obj.Labels) == 0 {
    89  					obj.Labels = labels
    90  				}
    91  			}
    92  			if obj.Spec.Completions == nil {
    93  				completions := 1
    94  				obj.Spec.Completions = &completions
    95  			}
    96  			if obj.Spec.Parallelism == nil {
    97  				obj.Spec.Parallelism = obj.Spec.Completions
    98  			}
    99  		},
   100  	)
   101  }