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| /* | ||
| Copyright 2020 The cert-manager Authors. | ||
| 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. | ||
| */ | ||
|
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| package test | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "time" | ||
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| corev1 "k8s.io/api/core/v1" | ||
| kubeinformers "k8s.io/client-go/informers" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/kubernetes/scheme" | ||
| clientv1 "k8s.io/client-go/kubernetes/typed/core/v1" | ||
| "k8s.io/client-go/rest" | ||
| "k8s.io/client-go/tools/clientcmd" | ||
| "k8s.io/client-go/tools/record" | ||
| "k8s.io/utils/clock" | ||
|
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| clientset "github.com/cert-manager/cert-manager/pkg/client/clientset/versioned" | ||
| cmscheme "github.com/cert-manager/cert-manager/pkg/client/clientset/versioned/scheme" | ||
| informers "github.com/cert-manager/cert-manager/pkg/client/informers/externalversions" | ||
| "github.com/cert-manager/cert-manager/pkg/util" | ||
| ) | ||
|
|
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| const resyncPeriod = 10 * time.Hour | ||
|
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| // Context contains various types that are used by controller implementations. | ||
| type Context struct { | ||
| // RootContext is the root context for the controller | ||
| RootContext context.Context | ||
|
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| StopCh <-chan struct{} | ||
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| FieldManager string | ||
| // RESTConfig is the loaded Kubernetes apiserver rest client configuration | ||
| RESTConfig *rest.Config | ||
| Client kubernetes.Interface | ||
| CMClient clientset.Interface | ||
|
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| Recorder record.EventRecorder | ||
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| KubeSharedInformerFactory kubeinformers.SharedInformerFactory | ||
| SharedInformerFactory informers.SharedInformerFactory | ||
|
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| ContextOptions | ||
| } | ||
|
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| // ContextOptions are static Controller Context options. | ||
| type ContextOptions struct { | ||
| // APIServerHost is the host address of the target Kubernetes API server. | ||
| APIServerHost string | ||
| Kubeconfig string | ||
| Namespace string | ||
| Clock clock.Clock | ||
| } | ||
|
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| // ContextFactory is used for constructing new Contexts who's clients have been | ||
| // configured with a User Agent built from the component name. | ||
| type ContextFactory struct { | ||
| baseRestConfig *rest.Config | ||
| ctx *Context | ||
| } | ||
|
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| // NewContextFactory builds a ContextFactory that builds controller Contexts | ||
| // that have been configured for that components User Agent. | ||
| func NewContextFactory(ctx context.Context, opts ContextOptions) (*ContextFactory, error) { | ||
| // Load the users Kubernetes config | ||
| restConfig, err := clientcmd.BuildConfigFromFlags(opts.APIServerHost, opts.Kubeconfig) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error creating rest config: %w", err) | ||
| } | ||
| restConfig = util.RestConfigWithUserAgent(restConfig) | ||
|
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| clients, err := buildClients(restConfig) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| sharedInformerFactory := informers.NewSharedInformerFactoryWithOptions(clients.cmClient, resyncPeriod, informers.WithNamespace(opts.Namespace)) | ||
| kubeSharedInformerFactory := kubeinformers.NewSharedInformerFactoryWithOptions(clients.kubeClient, resyncPeriod, kubeinformers.WithNamespace(opts.Namespace)) | ||
|
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| return &ContextFactory{ | ||
| baseRestConfig: restConfig, | ||
| ctx: &Context{ | ||
| RootContext: ctx, | ||
| StopCh: ctx.Done(), | ||
| KubeSharedInformerFactory: kubeSharedInformerFactory, | ||
| SharedInformerFactory: sharedInformerFactory, | ||
| ContextOptions: opts, | ||
| }, | ||
| }, nil | ||
| } | ||
|
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| // Build builds a new controller Context who's clients have a User Agent | ||
| // derived from the optional component name. | ||
| func (c *ContextFactory) Build(component ...string) (*Context, error) { | ||
| restConfig := util.RestConfigWithUserAgent(c.baseRestConfig, component...) | ||
|
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| clients, err := buildClients(restConfig) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| // Create event broadcaster. | ||
| cmscheme.AddToScheme(scheme.Scheme) | ||
| eventBroadcaster := record.NewBroadcaster() | ||
| eventBroadcaster.StartRecordingToSink(&clientv1.EventSinkImpl{Interface: clients.kubeClient.CoreV1().Events("")}) | ||
| recorder := eventBroadcaster.NewRecorder(scheme.Scheme, corev1.EventSource{Component: util.PrefixFromUserAgent(restConfig.UserAgent)}) | ||
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| ctx := *c.ctx | ||
| ctx.FieldManager = util.PrefixFromUserAgent(restConfig.UserAgent) | ||
| ctx.RESTConfig = restConfig | ||
| ctx.Client = clients.kubeClient | ||
| ctx.CMClient = clients.cmClient | ||
| ctx.Recorder = recorder | ||
|
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| return &ctx, nil | ||
| } | ||
|
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| // contextClients is a helper struct containing API clients. | ||
| type contextClients struct { | ||
| kubeClient kubernetes.Interface | ||
| cmClient clientset.Interface | ||
| } | ||
|
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| // buildClients builds all required clients for the context using the given | ||
| // REST config. | ||
| func buildClients(restConfig *rest.Config) (contextClients, error) { | ||
| // Create a cert-manager api client | ||
| cmClient, err := clientset.NewForConfig(restConfig) | ||
| if err != nil { | ||
| return contextClients{}, fmt.Errorf("error creating internal group client: %w", err) | ||
| } | ||
| kubeClient, err := kubernetes.NewForConfig(restConfig) | ||
| if err != nil { | ||
| return contextClients{}, fmt.Errorf("error creating kubernetes client: %w", err) | ||
| } | ||
| return contextClients{kubeClient, cmClient}, nil | ||
| } |
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