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defaults.go
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defaults.go
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// Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1alpha1
import (
"fmt"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
"github.com/gardener/gardener/pkg/apis/seedmanagement/helper"
configv1alpha1 "github.com/gardener/gardener/pkg/gardenlet/apis/config/v1alpha1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/utils/pointer"
)
func addDefaultingFuncs(scheme *runtime.Scheme) error {
return RegisterDefaults(scheme)
}
// SetDefaults_ManagedSeed sets default values for ManagedSeed objects.
func SetDefaults_ManagedSeed(obj *ManagedSeed) {
switch {
case obj.Spec.SeedTemplate != nil:
setDefaultsSeedSpec(&obj.Spec.SeedTemplate.Spec, obj.Name, obj.Namespace, true)
case obj.Spec.Gardenlet != nil:
setDefaultsGardenlet(obj.Spec.Gardenlet, obj.Name, obj.Namespace)
}
}
// SetDefaults_GardenletDeployment sets default values for GardenletDeployment objects.
func SetDefaults_GardenletDeployment(obj *GardenletDeployment) {
// Set default replica count
if obj.ReplicaCount == nil {
obj.ReplicaCount = pointer.Int32Ptr(1)
}
// Set default revision history limit
if obj.RevisionHistoryLimit == nil {
obj.RevisionHistoryLimit = pointer.Int32Ptr(1)
}
// Set default image
if obj.Image == nil {
obj.Image = &Image{}
}
// Set default VPA
if obj.VPA == nil {
obj.VPA = pointer.BoolPtr(true)
}
}
// SetDefaults_Image sets default values for Image objects.
func SetDefaults_Image(obj *Image) {
// Set default pull policy
if obj.PullPolicy == nil {
var pullPolicy corev1.PullPolicy
if obj.Tag != nil && *obj.Tag == "latest" {
pullPolicy = corev1.PullAlways
} else {
pullPolicy = corev1.PullIfNotPresent
}
obj.PullPolicy = &pullPolicy
}
}
func setDefaultsGardenlet(obj *Gardenlet, name, namespace string) {
// Set deployment defaults
if obj.Deployment == nil {
obj.Deployment = &GardenletDeployment{}
}
// Decode / initialize gardenlet config
var gardenletConfig *configv1alpha1.GardenletConfiguration
if obj.Config != nil {
// Decode gardenlet config to an external version
// Without defaults, since we don't want to set gardenlet config defaults in the resource at this point
// Ignoring errors, since this package does not support proper error reporting
// and if we just return here obj.Config will remain uninitialized, resulting in no error message but
// wrong behavior later on
gardenletConfig, _ = helper.DecodeGardenletConfigurationExternal(obj.Config, false)
}
if gardenletConfig == nil {
gardenletConfig = &configv1alpha1.GardenletConfiguration{
TypeMeta: metav1.TypeMeta{
APIVersion: configv1alpha1.SchemeGroupVersion.String(),
Kind: "GardenletConfiguration",
},
}
}
// Set gardenlet config defaults
setDefaultsGardenletConfiguration(gardenletConfig, name, namespace)
// Set gardenlet config back to obj.Config
obj.Config = &runtime.RawExtension{Object: gardenletConfig}
// Set default garden connection bootstrap
if obj.Bootstrap == nil {
gardenConnectionBootstrap := BootstrapToken
obj.Bootstrap = &gardenConnectionBootstrap
}
// Set default merge with parent
if obj.MergeWithParent == nil {
obj.MergeWithParent = pointer.BoolPtr(true)
}
}
func setDefaultsGardenletConfiguration(obj *configv1alpha1.GardenletConfiguration, name, namespace string) {
// Initialize seed config
if obj.SeedConfig == nil {
obj.SeedConfig = &configv1alpha1.SeedConfig{}
}
// Set seed spec defaults
setDefaultsSeedSpec(&obj.SeedConfig.SeedTemplate.Spec, name, namespace, false)
}
func setDefaultsSeedSpec(spec *gardencorev1beta1.SeedSpec, name, namespace string, withSecretRef bool) {
if spec.SecretRef == nil && withSecretRef {
spec.SecretRef = &corev1.SecretReference{
Name: fmt.Sprintf("seed-%s", name),
Namespace: namespace,
}
}
if spec.Backup != nil && spec.Backup.SecretRef == (corev1.SecretReference{}) {
spec.Backup.SecretRef = corev1.SecretReference{
Name: fmt.Sprintf("backup-%s", name),
Namespace: namespace,
}
}
}