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types.go
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types.go
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// Copyright (c) 2019 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 kubernetes
import (
"context"
"github.com/gardener/gardener/pkg/chartrenderer"
gardencoreclientset "github.com/gardener/gardener/pkg/client/core/clientset/versioned"
gardencorescheme "github.com/gardener/gardener/pkg/client/core/clientset/versioned/scheme"
gardenextensionsscheme "github.com/gardener/gardener/pkg/client/extensions/clientset/versioned/scheme"
gardenseedmanagementclientset "github.com/gardener/gardener/pkg/client/seedmanagement/clientset/versioned"
gardenseedmanagementscheme "github.com/gardener/gardener/pkg/client/seedmanagement/clientset/versioned/scheme"
gardensettingsscheme "github.com/gardener/gardener/pkg/client/settings/clientset/versioned/scheme"
druidv1alpha1 "github.com/gardener/etcd-druid/api/v1alpha1"
dnsv1alpha1 "github.com/gardener/external-dns-management/pkg/apis/dns/v1alpha1"
resourcesscheme "github.com/gardener/gardener-resource-manager/pkg/apis/resources/v1alpha1"
hvpav1alpha1 "github.com/gardener/hvpa-controller/api/v1alpha1"
istionetworkingv1beta1 "istio.io/client-go/pkg/apis/networking/v1beta1"
apiextensionsclientset "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
apiextensionsscheme "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/scheme"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/runtime/serializer/json"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/version"
autoscalingscheme "k8s.io/autoscaler/vertical-pod-autoscaler/pkg/apis/autoscaling.k8s.io/v1beta2"
kubernetesclientset "k8s.io/client-go/kubernetes"
corescheme "k8s.io/client-go/kubernetes/scheme"
"k8s.io/client-go/rest"
apiregistrationclientset "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset"
apiregistrationscheme "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/scheme"
"sigs.k8s.io/controller-runtime/pkg/cache"
"sigs.k8s.io/controller-runtime/pkg/client"
)
var (
// GardenScheme is the scheme used in the Garden cluster.
GardenScheme = runtime.NewScheme()
// SeedScheme is the scheme used in the Seed cluster.
SeedScheme = runtime.NewScheme()
// ShootScheme is the scheme used in the Shoot cluster.
ShootScheme = runtime.NewScheme()
// PlantScheme is the scheme used in the Plant cluster
PlantScheme = runtime.NewScheme()
// DefaultDeleteOptions use foreground propagation policy and grace period of 60 seconds.
DefaultDeleteOptions = []client.DeleteOption{
client.PropagationPolicy(metav1.DeletePropagationForeground),
client.GracePeriodSeconds(60),
}
// ForceDeleteOptions use background propagation policy and grace period of 0 seconds.
ForceDeleteOptions = []client.DeleteOption{
client.PropagationPolicy(metav1.DeletePropagationBackground),
client.GracePeriodSeconds(0),
}
// SeedSerializer is a YAML serializer using the Seed scheme.
SeedSerializer = json.NewSerializerWithOptions(json.DefaultMetaFactory, SeedScheme, SeedScheme, json.SerializerOptions{Yaml: true, Pretty: false, Strict: false})
// SeedCodec is a codec factory using the Seed scheme.
SeedCodec = serializer.NewCodecFactory(SeedScheme)
// ShootSerializer is a YAML serializer using the Shoot scheme.
ShootSerializer = json.NewSerializerWithOptions(json.DefaultMetaFactory, ShootScheme, ShootScheme, json.SerializerOptions{Yaml: true, Pretty: false, Strict: false})
// ShootCodec is a codec factory using the Shoot scheme.
ShootCodec = serializer.NewCodecFactory(ShootScheme)
)
// DefaultGetOptions are the default options for GET requests.
func DefaultGetOptions() metav1.GetOptions { return metav1.GetOptions{} }
// DefaultCreateOptions are the default options for CREATE requests.
func DefaultCreateOptions() metav1.CreateOptions { return metav1.CreateOptions{} }
// DefaultUpdateOptions are the default options for UPDATE requests.
func DefaultUpdateOptions() metav1.UpdateOptions { return metav1.UpdateOptions{} }
func init() {
gardenSchemeBuilder := runtime.NewSchemeBuilder(
corescheme.AddToScheme,
gardencorescheme.AddToScheme,
gardenseedmanagementscheme.AddToScheme,
gardensettingsscheme.AddToScheme,
apiregistrationscheme.AddToScheme,
)
utilruntime.Must(gardenSchemeBuilder.AddToScheme(GardenScheme))
seedSchemeBuilder := runtime.NewSchemeBuilder(
corescheme.AddToScheme,
dnsv1alpha1.AddToScheme,
gardenextensionsscheme.AddToScheme,
resourcesscheme.AddToScheme,
autoscalingscheme.AddToScheme,
hvpav1alpha1.AddToScheme,
druidv1alpha1.AddToScheme,
apiextensionsscheme.AddToScheme,
istionetworkingv1beta1.AddToScheme,
)
utilruntime.Must(seedSchemeBuilder.AddToScheme(SeedScheme))
shootSchemeBuilder := runtime.NewSchemeBuilder(
corescheme.AddToScheme,
apiextensionsscheme.AddToScheme,
apiregistrationscheme.AddToScheme,
autoscalingscheme.AddToScheme,
)
utilruntime.Must(shootSchemeBuilder.AddToScheme(ShootScheme))
plantSchemeBuilder := runtime.NewSchemeBuilder(
corescheme.AddToScheme,
gardencorescheme.AddToScheme,
)
utilruntime.Must(plantSchemeBuilder.AddToScheme(PlantScheme))
}
// MergeFunc determines how oldOj is merged into new oldObj.
type MergeFunc func(newObj, oldObj *unstructured.Unstructured)
// Applier is an interface which describes declarative operations to apply multiple
// Kubernetes objects.
type Applier interface {
ApplyManifest(ctx context.Context, unstructured UnstructuredReader, options MergeFuncs) error
DeleteManifest(ctx context.Context, unstructured UnstructuredReader, opts ...DeleteManifestOption) error
}
// Interface is used to wrap the interactions with a Kubernetes cluster
// (which are performed with the help of kubernetes/client-go) in order to allow the implementation
// of several Kubernetes versions.
type Interface interface {
RESTConfig() *rest.Config
RESTClient() rest.Interface
// Client returns the ClientSet's controller-runtime client. This client should be used by default, as it carries
// a cache, which uses SharedIndexInformers to keep up-to-date.
Client() client.Client
// APIReader returns a client.Reader that directly reads from the API server.
APIReader() client.Reader
// DirectClient returns a controller-runtime client, which can be used to talk to the API server directly
// (without using a cache).
// Deprecated: used APIReader instead, if the controller can't tolerate stale reads.
DirectClient() client.Client
// Cache returns the ClientSet's controller-runtime cache. It can be used to get Informers for arbitrary objects.
Cache() cache.Cache
// Applier returns an Applier which uses the ClientSet's client.
Applier() Applier
// ChartRenderer returns a ChartRenderer populated with the cluster's Capabilities.
ChartRenderer() chartrenderer.Interface
// ChartApplier returns a ChartApplier using the ClientSet's ChartRenderer and Applier.
ChartApplier() ChartApplier
Kubernetes() kubernetesclientset.Interface
GardenCore() gardencoreclientset.Interface
GardenSeedManagement() gardenseedmanagementclientset.Interface
APIExtension() apiextensionsclientset.Interface
APIRegistration() apiregistrationclientset.Interface
// Deprecated: Use `Client()` and utils instead.
ForwardPodPort(string, string, int, int) (chan struct{}, error)
CheckForwardPodPort(string, string, int, int) error
// Version returns the server version of the targeted Kubernetes cluster.
Version() string
// DiscoverVersion tries to retrieve the server version of the targeted Kubernetes cluster and updates the
// ClientSet's saved version accordingly. Use Version if you only want to retrieve the kubernetes version instead
// of refreshing the ClientSet's saved version.
DiscoverVersion() (*version.Info, error)
// Start starts the cache of the ClientSet's controller-runtime client and returns immediately.
// It must be called first before using the client to retrieve objects from the API server.
Start(ctx context.Context)
// WaitForCacheSync waits for the cache of the ClientSet's controller-runtime client to be synced.
WaitForCacheSync(ctx context.Context) bool
}