defaults.go

Documentation: k8s.io/kubernetes/pkg/controller/podautoscaler/config/v1alpha1

     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 v1alpha1
    18  
    19  import (
    20  	"time"
    21  
    22  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    23  	kubectrlmgrconfigv1alpha1 "k8s.io/kube-controller-manager/config/v1alpha1"
    24  )
    25  
    26  // RecommendedDefaultHPAControllerConfiguration defaults a pointer to a
    27  // HPAControllerConfiguration struct. This will set the recommended default
    28  // values, but they may be subject to change between API versions. This function
    29  // is intentionally not registered in the scheme as a "normal" `SetDefaults_Foo`
    30  // function to allow consumers of this type to set whatever defaults for their
    31  // embedded configs. Forcing consumers to use these defaults would be problematic
    32  // as defaulting in the scheme is done as part of the conversion, and there would
    33  // be no easy way to opt-out. Instead, if you want to use this defaulting method
    34  // run it in your wrapper struct of this type in its `SetDefaults_` method.
    35  func RecommendedDefaultHPAControllerConfiguration(obj *kubectrlmgrconfigv1alpha1.HPAControllerConfiguration) {
    36  	zero := metav1.Duration{}
    37  	if obj.ConcurrentHorizontalPodAutoscalerSyncs == 0 {
    38  		obj.ConcurrentHorizontalPodAutoscalerSyncs = 5
    39  	}
    40  	if obj.HorizontalPodAutoscalerSyncPeriod == zero {
    41  		obj.HorizontalPodAutoscalerSyncPeriod = metav1.Duration{Duration: 15 * time.Second}
    42  	}
    43  	if obj.HorizontalPodAutoscalerUpscaleForbiddenWindow == zero {
    44  		obj.HorizontalPodAutoscalerUpscaleForbiddenWindow = metav1.Duration{Duration: 3 * time.Minute}
    45  	}
    46  	if obj.HorizontalPodAutoscalerDownscaleStabilizationWindow == zero {
    47  		obj.HorizontalPodAutoscalerDownscaleStabilizationWindow = metav1.Duration{Duration: 5 * time.Minute}
    48  	}
    49  	if obj.HorizontalPodAutoscalerCPUInitializationPeriod == zero {
    50  		obj.HorizontalPodAutoscalerCPUInitializationPeriod = metav1.Duration{Duration: 5 * time.Minute}
    51  	}
    52  	if obj.HorizontalPodAutoscalerInitialReadinessDelay == zero {
    53  		obj.HorizontalPodAutoscalerInitialReadinessDelay = metav1.Duration{Duration: 30 * time.Second}
    54  	}
    55  	if obj.HorizontalPodAutoscalerDownscaleForbiddenWindow == zero {
    56  		obj.HorizontalPodAutoscalerDownscaleForbiddenWindow = metav1.Duration{Duration: 5 * time.Minute}
    57  	}
    58  	if obj.HorizontalPodAutoscalerTolerance == 0 {
    59  		obj.HorizontalPodAutoscalerTolerance = 0.1
    60  	}
    61  }
    62
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