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Merge pull request #2202 from carlory/karmadactl-factory
introduce factory interface for karmadactl
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package util | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
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| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/cli-runtime/pkg/genericclioptions" | ||
| cmdutil "k8s.io/kubectl/pkg/cmd/util" | ||
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| karmadaclientset "github.com/karmada-io/karmada/pkg/generated/clientset/versioned" | ||
| ) | ||
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| const proxyURL = "/apis/cluster.karmada.io/v1alpha1/clusters/%s/proxy/" | ||
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| // The Factory interface provides 2 major features compared to the cmdutil.Factory: | ||
| // 1. provides a method to get a karmada clientset | ||
| // 2. provides a method to get a cmdutil.Factory for the member cluster | ||
| type Factory interface { | ||
| cmdutil.Factory | ||
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| // KarmadaClientSet returns a karmada clientset | ||
| KarmadaClientSet() (karmadaclientset.Interface, error) | ||
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| // FactoryForMemberCluster returns a cmdutil.Factory for the member cluster | ||
| FactoryForMemberCluster(clusterName string) (cmdutil.Factory, error) | ||
| } | ||
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| var _ Factory = &factoryImpl{} | ||
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| // factoryImpl is the implementation of Factory | ||
| type factoryImpl struct { | ||
| cmdutil.Factory | ||
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| // kubeConfigFlags holds all the flags specificed by user. | ||
| // These flags will be inherited by the member cluster's client. | ||
| kubeConfigFlags *genericclioptions.ConfigFlags | ||
| } | ||
|
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| // NewFactory returns a new factory | ||
| func NewFactory(kubeConfigFlags *genericclioptions.ConfigFlags) Factory { | ||
| matchVersionKubeConfigFlags := cmdutil.NewMatchVersionFlags(kubeConfigFlags) | ||
| f := &factoryImpl{ | ||
| kubeConfigFlags: kubeConfigFlags, | ||
| Factory: cmdutil.NewFactory(matchVersionKubeConfigFlags), | ||
| } | ||
| return f | ||
| } | ||
|
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| // KarmadaClientSet returns a karmada clientset | ||
| func (f *factoryImpl) KarmadaClientSet() (karmadaclientset.Interface, error) { | ||
| clientConfig, err := f.ToRESTConfig() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return karmadaclientset.NewForConfig(clientConfig) | ||
| } | ||
|
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| // FactoryForMemberCluster returns a cmdutil.Factory for the member cluster | ||
| func (f *factoryImpl) FactoryForMemberCluster(clusterName string) (cmdutil.Factory, error) { | ||
| // Get client config of the karmada, and use it to create a cmdutil.Factory for the member cluster later. | ||
| clientConfig, err := f.ToRESTConfig() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| karmadaAPIServer := clientConfig.Host | ||
|
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||
| // Check if the given cluster is joined to karmada | ||
| client, err := karmadaclientset.NewForConfig(clientConfig) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| _, err = client.ClusterV1alpha1().Clusters().Get(context.TODO(), clusterName, metav1.GetOptions{}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| // Inherit all properties from the original flags specified by user except for the kube-apiserver address. | ||
| kubeConfigFlags := &genericclioptions.ConfigFlags{ | ||
| CacheDir: f.kubeConfigFlags.CacheDir, | ||
| KubeConfig: f.kubeConfigFlags.KubeConfig, | ||
| ClusterName: f.kubeConfigFlags.ClusterName, | ||
| AuthInfoName: f.kubeConfigFlags.AuthInfoName, | ||
| Context: f.kubeConfigFlags.Context, | ||
| Namespace: f.kubeConfigFlags.Namespace, | ||
| Insecure: f.kubeConfigFlags.Insecure, | ||
| CertFile: f.kubeConfigFlags.CertFile, | ||
| KeyFile: f.kubeConfigFlags.KeyFile, | ||
| CAFile: f.kubeConfigFlags.CAFile, | ||
| BearerToken: f.kubeConfigFlags.BearerToken, | ||
| Impersonate: f.kubeConfigFlags.Impersonate, | ||
| ImpersonateUID: f.kubeConfigFlags.ImpersonateUID, | ||
| ImpersonateGroup: f.kubeConfigFlags.ImpersonateGroup, | ||
| Username: f.kubeConfigFlags.Username, | ||
| Password: f.kubeConfigFlags.Password, | ||
| Timeout: f.kubeConfigFlags.Timeout, | ||
| WrapConfigFn: f.kubeConfigFlags.WrapConfigFn, | ||
| } | ||
| // Override the kube-apiserver address. | ||
| memberAPIserver := karmadaAPIServer + fmt.Sprintf(proxyURL, clusterName) | ||
| kubeConfigFlags.APIServer = &memberAPIserver | ||
| matchVersionKubeConfigFlags := cmdutil.NewMatchVersionFlags(kubeConfigFlags) | ||
| return cmdutil.NewFactory(matchVersionKubeConfigFlags), nil | ||
| } |