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loader.go
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loader.go
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package kubeconfig
import (
"io"
"os"
"path/filepath"
"k8s.io/client-go/tools/clientcmd"
)
func GetNonInteractiveClientConfig(kubeConfig string) clientcmd.ClientConfig {
return GetClientConfig(kubeConfig, nil)
}
func GetNonInteractiveClientConfigWithContext(kubeConfig, currentContext string) clientcmd.ClientConfig {
return GetClientConfigWithContext(kubeConfig, currentContext, nil)
}
func GetInteractiveClientConfig(kubeConfig string) clientcmd.ClientConfig {
return GetClientConfig(kubeConfig, os.Stdin)
}
func GetClientConfigWithContext(kubeConfig, currentContext string, reader io.Reader) clientcmd.ClientConfig {
loadingRules := GetLoadingRules(kubeConfig)
overrides := &clientcmd.ConfigOverrides{ClusterDefaults: clientcmd.ClusterDefaults, CurrentContext: currentContext}
return clientcmd.NewInteractiveDeferredLoadingClientConfig(loadingRules, overrides, reader)
}
func GetClientConfig(kubeConfig string, reader io.Reader) clientcmd.ClientConfig {
return GetClientConfigWithContext(kubeConfig, "", reader)
}
func GetLoadingRules(kubeConfig string) *clientcmd.ClientConfigLoadingRules {
loadingRules := clientcmd.NewDefaultClientConfigLoadingRules()
loadingRules.DefaultClientConfig = &clientcmd.DefaultClientConfig
if kubeConfig != "" {
loadingRules.ExplicitPath = kubeConfig
}
var otherFiles []string
homeDir, err := os.UserHomeDir()
if err == nil {
otherFiles = append(otherFiles, filepath.Join(homeDir, ".kube", "k3s.yaml"))
}
otherFiles = append(otherFiles, "/etc/rancher/k3s/k3s.yaml")
loadingRules.Precedence = append(loadingRules.Precedence, canRead(otherFiles)...)
return loadingRules
}
func canRead(files []string) (result []string) {
for _, f := range files {
_, err := os.ReadFile(f)
if err == nil {
result = append(result, f)
}
}
return
}