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application_chart_valueshelper.go
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application_chart_valueshelper.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 values
import (
"github.com/gardener/gardener/landscaper/pkg/controlplane/apis/imports"
admissioncontrollerconfigv1alpha1 "github.com/gardener/gardener/pkg/admissioncontroller/apis/config/v1alpha1"
"github.com/gardener/gardener/pkg/utils"
)
// ApplicationChartValuesHelper provides methods computing the values to be used when applying the control plane application chart
type ApplicationChartValuesHelper interface {
// GetApplicationChartValues computes the values to be used when applying the control plane application chart.
GetApplicationChartValues() (map[string]interface{}, error)
}
// valuesHelper is a concrete implementation of ApplicationChartValuesHelper
// Contains all values that are needed to render the control plane application chart
type valuesHelper struct {
// VirtualGarden defines if the application chart is installed into a virtual Garden cluster
// this has implications on how the Webhook configurations are set up (cannot use k8s services directly
// as Configuration and GAC are not deployed in the same cluster)
VirtualGarden bool // .Values.global.deployment.virtualGarden.enabled
// VirtualGardenClusterIP is written into the endpoints resource of the "gardener-apiserver" service.
VirtualGardenClusterIP *string
// CAPublicKeyGardenerAPIServer is the CA put into the APIService registering the Gardener API groups to validate
// the TLS serving certificates presented by the Gardener API Server.
CAPublicCertGardenerAPIServer string // .Values.global.apiserver.caBundle
// CAPublicCertAdmissionController is the CA put into the MutatingWebhookConfiguration `gardener-admission-controller`
// to validate the TLS serving certificates presented by the Gardener Admission Controller
CAPublicCertAdmissionController *string // .Values.global.admission.config.server.https.tls.caBundle
// InternalDomain configures the internal domain secret
InternalDomain imports.DNS
// DefaultDomains configures the internal domain secrets
DefaultDomains []imports.DNS
// DiffieHellmannKey configures the secret containing the OpenVPN Diffie-Hellmann-Key
DiffieHellmannKey string
// Alerting is needed to set up the Alerting secret
Alerting []imports.Alerting
// AdmissionControllerConfig is the configuration of the Gardener Admission Controller
// Needed for the application chart for the validating webhook configuration registering the webhook `validate-resource-size.gardener.cloud`
// Uses the resourceAdmissionConfiguration.Limits{apiGroups, apiVersions, resources / not: size, operationMode}
// Configured to .Values.global.admission.config.server.resourceAdmissionConfiguration.limits
AdmissionControllerConfig *admissioncontrollerconfigv1alpha1.AdmissionControllerConfiguration
// SeedRestrictionEnabled configures if the validating webhook with name validate-namespace-deletion should contain
// the webhook seed-restriction.gardener.cloud
SeedRestrictionEnabled *bool
}
// NewApplicationChartValuesHelper creates a new ApplicationChartValuesHelper.
func NewApplicationChartValuesHelper(
virtualGarden bool,
virtualGardenClusterIP *string,
caPublicCertGardenerAPIServer string,
caPublicCertAdmissionController *string,
internalDomain imports.DNS,
defaultDomains []imports.DNS,
diffieHellmannKey string,
alerting []imports.Alerting,
admissionControllerConfig *admissioncontrollerconfigv1alpha1.AdmissionControllerConfiguration,
seedRestrictionEnabled *bool,
) ApplicationChartValuesHelper {
return &valuesHelper{
VirtualGarden: virtualGarden,
VirtualGardenClusterIP: virtualGardenClusterIP,
CAPublicCertGardenerAPIServer: caPublicCertGardenerAPIServer,
CAPublicCertAdmissionController: caPublicCertAdmissionController,
InternalDomain: internalDomain,
DefaultDomains: defaultDomains,
DiffieHellmannKey: diffieHellmannKey,
Alerting: alerting,
AdmissionControllerConfig: admissionControllerConfig,
SeedRestrictionEnabled: seedRestrictionEnabled,
}
}
func (v valuesHelper) GetApplicationChartValues() (map[string]interface{}, error) {
var (
values = make(map[string]interface{})
err error
)
values, err = utils.SetToValuesMap(values, v.VirtualGarden, "deployment", "virtualGarden", "enabled")
if err != nil {
return nil, err
}
if v.VirtualGardenClusterIP != nil {
values, err = utils.SetToValuesMap(values, *v.VirtualGardenClusterIP, "deployment", "virtualGarden", "clusterIP")
if err != nil {
return nil, err
}
}
values, err = utils.SetToValuesMap(values, v.CAPublicCertGardenerAPIServer, "apiserver", "caBundle")
if err != nil {
return nil, err
}
if v.CAPublicCertAdmissionController != nil {
values, err = utils.SetToValuesMap(values, v.CAPublicCertAdmissionController, "admission", "config", "server", "https", "tls", "caBundle")
if err != nil {
return nil, err
}
}
internalDomainValue, err := utils.ToValuesMapWithOptions(v.InternalDomain, utils.Options{
LowerCaseKeys: true,
})
if err != nil {
return nil, err
}
values, err = utils.SetToValuesMap(values, internalDomainValue, "internalDomain")
if err != nil {
return nil, err
}
var defaultDomainValues []map[string]interface{}
for _, domain := range v.DefaultDomains {
v, err := utils.ToValuesMapWithOptions(domain, utils.Options{
LowerCaseKeys: true,
})
if err != nil {
return nil, err
}
defaultDomainValues = append(defaultDomainValues, v)
}
if len(defaultDomainValues) > 0 {
values, err = utils.SetToValuesMap(values, defaultDomainValues, "defaultDomains")
if err != nil {
return nil, err
}
}
values, err = utils.SetToValuesMap(values, v.DiffieHellmannKey, "openVPNDiffieHellmanKey")
if err != nil {
return nil, err
}
if v.SeedRestrictionEnabled != nil && *v.SeedRestrictionEnabled {
values, err = utils.SetToValuesMap(values, v.SeedRestrictionEnabled, "admission", "seedRestriction", "enabled")
if err != nil {
return nil, err
}
}
if v.AdmissionControllerConfig != nil && v.AdmissionControllerConfig.Server.ResourceAdmissionConfiguration != nil {
v, err := utils.ToValuesMapWithOptions(v.AdmissionControllerConfig.Server.ResourceAdmissionConfiguration, utils.Options{RemoveZeroEntries: true})
if err != nil {
return nil, err
}
values, err = utils.SetToValuesMap(values, v, "admission", "config", "server", "resourceAdmissionConfiguration")
if err != nil {
return nil, err
}
}
var alertingValues []map[string]interface{}
for _, alert := range v.Alerting {
var alertValues map[string]interface{}
// custom mapping needed because the keys in the helm chart do not match the keys in the import configuration
switch alert.AuthType {
case "none":
alertValues = map[string]interface{}{
"auth_type": alert.AuthType,
"url": alert.Url,
}
case "smtp":
alertValues = map[string]interface{}{
"auth_type": alert.AuthType,
"to": alert.ToEmailAddress,
"from": alert.FromEmailAddress,
"smarthost": alert.Smarthost,
"auth_username": alert.AuthUsername,
"auth_identity": alert.AuthIdentity,
"auth_password": alert.AuthPassword,
}
case "basic":
alertValues = map[string]interface{}{
"auth_type": alert.AuthType,
"url": alert.Url,
"username": alert.Username,
"password": alert.Password,
}
case "certificate":
alertValues = map[string]interface{}{
"auth_type": alert.AuthType,
"url": alert.Url,
"ca_crt": alert.CaCert,
"tls_cert": alert.TlsCert,
"tls_key": alert.TlsKey,
}
}
alertingValues = append(alertingValues, alertValues)
}
if len(alertingValues) > 0 {
values, err = utils.SetToValuesMap(values, alertingValues, "alerting")
if err != nil {
return nil, err
}
}
return map[string]interface{}{
"global": values,
}, nil
}