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dnsprovider.go
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/
dnsprovider.go
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// Copyright (c) 2020 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 dns
import (
"context"
"time"
dnsv1alpha1 "github.com/gardener/external-dns-management/pkg/apis/dns/v1alpha1"
"github.com/sirupsen/logrus"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
"github.com/gardener/gardener/pkg/controllerutils"
"github.com/gardener/gardener/pkg/extensions"
"github.com/gardener/gardener/pkg/operation/botanist/component"
kutil "github.com/gardener/gardener/pkg/utils/kubernetes"
)
// ProviderValues contains the values used to create a DNSProvider.
type ProviderValues struct {
Name string
Purpose string
Provider string
Labels map[string]string
Annotations map[string]string
SecretData map[string][]byte
Domains *IncludeExclude
Zones *IncludeExclude
}
// IncludeExclude contain slices of excluded and included domains/zones.
type IncludeExclude struct {
Include []string
Exclude []string
}
// NewProvider creates a new instance of DeployWaiter for a specific DNSProvider.
func NewProvider(
logger logrus.FieldLogger,
client client.Client,
namespace string,
values *ProviderValues,
) component.DeployWaiter {
return &provider{
logger: logger,
client: client,
namespace: namespace,
values: values,
dnsProvider: &dnsv1alpha1.DNSProvider{
ObjectMeta: metav1.ObjectMeta{
Name: values.Name,
Namespace: namespace,
},
},
}
}
type provider struct {
logger logrus.FieldLogger
client client.Client
namespace string
values *ProviderValues
dnsProvider *dnsv1alpha1.DNSProvider
}
func (p *provider) Deploy(ctx context.Context) error {
secret := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: "extensions-dns-" + p.values.Name,
Namespace: p.namespace,
},
}
if _, err := controllerutils.GetAndCreateOrMergePatch(ctx, p.client, secret, func() error {
secret.Labels = p.values.Labels
secret.Type = corev1.SecretTypeOpaque
secret.Data = p.values.SecretData
return nil
}); err != nil {
return err
}
_, err := controllerutils.GetAndCreateOrMergePatch(ctx, p.client, p.dnsProvider, func() error {
p.dnsProvider.Labels = p.values.Labels
p.dnsProvider.Annotations = p.values.Annotations
metav1.SetMetaDataAnnotation(&p.dnsProvider.ObjectMeta, v1beta1constants.GardenerTimestamp, TimeNow().UTC().String())
p.dnsProvider.Spec = dnsv1alpha1.DNSProviderSpec{
Type: p.values.Provider,
SecretRef: &corev1.SecretReference{Name: secret.Name},
}
if p.values.Domains != nil {
p.dnsProvider.Spec.Domains = &dnsv1alpha1.DNSSelection{
Include: p.values.Domains.Include,
Exclude: p.values.Domains.Exclude,
}
}
if p.values.Zones != nil {
p.dnsProvider.Spec.Zones = &dnsv1alpha1.DNSSelection{
Include: p.values.Zones.Include,
Exclude: p.values.Zones.Exclude,
}
}
return nil
})
return err
}
func (p *provider) Destroy(ctx context.Context) error {
return client.IgnoreNotFound(p.client.Delete(ctx, p.dnsProvider))
}
func (p *provider) Wait(ctx context.Context) error {
return extensions.WaitUntilObjectReadyWithHealthFunction(
ctx,
p.client,
p.logger,
CheckDNSObject,
p.dnsProvider,
dnsv1alpha1.DNSProviderKind,
5*time.Second,
15*time.Second,
2*time.Minute,
nil,
)
}
func (p *provider) WaitCleanup(ctx context.Context) error {
timeoutCtx, cancel := context.WithTimeout(ctx, 2*time.Minute)
defer cancel()
return kutil.WaitUntilResourceDeleted(timeoutCtx, p.client, p.dnsProvider, 5*time.Second)
}