mirror of https://github.com/docker/cli.git
62 lines
1.7 KiB
Go
62 lines
1.7 KiB
Go
package kubernetes
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import (
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"io/ioutil"
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"github.com/docker/cli/cli/context"
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"k8s.io/client-go/tools/clientcmd"
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clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
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)
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// FromKubeConfig creates a Kubernetes endpoint from a Kubeconfig file
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func FromKubeConfig(kubeconfig, kubeContext, namespaceOverride string) (Endpoint, error) {
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cfg := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
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&clientcmd.ClientConfigLoadingRules{ExplicitPath: kubeconfig},
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&clientcmd.ConfigOverrides{CurrentContext: kubeContext, Context: clientcmdapi.Context{Namespace: namespaceOverride}})
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ns, _, err := cfg.Namespace()
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if err != nil {
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return Endpoint{}, err
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}
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clientcfg, err := cfg.ClientConfig()
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if err != nil {
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return Endpoint{}, err
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}
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var ca, key, cert []byte
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if ca, err = readFileOrDefault(clientcfg.CAFile, clientcfg.CAData); err != nil {
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return Endpoint{}, err
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}
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if key, err = readFileOrDefault(clientcfg.KeyFile, clientcfg.KeyData); err != nil {
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return Endpoint{}, err
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}
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if cert, err = readFileOrDefault(clientcfg.CertFile, clientcfg.CertData); err != nil {
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return Endpoint{}, err
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}
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var tlsData *context.TLSData
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if ca != nil || cert != nil || key != nil {
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tlsData = &context.TLSData{
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CA: ca,
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Cert: cert,
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Key: key,
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}
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}
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return Endpoint{
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EndpointMeta: EndpointMeta{
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EndpointMetaBase: context.EndpointMetaBase{
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Host: clientcfg.Host,
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SkipTLSVerify: clientcfg.Insecure,
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},
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DefaultNamespace: ns,
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AuthProvider: clientcfg.AuthProvider,
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Exec: clientcfg.ExecProvider,
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},
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TLSData: tlsData,
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}, nil
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}
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func readFileOrDefault(path string, defaultValue []byte) ([]byte, error) {
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if path != "" {
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return ioutil.ReadFile(path)
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}
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return defaultValue, nil
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}
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