/
client.go
71 lines (58 loc) · 1.61 KB
/
client.go
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package kubernetes
import (
"os"
"path/filepath"
"github.com/khulnasoft/meshplay/meshkit/utils"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
)
// DetectKubeConfig detects the kubeconfig for the kubernetes cluster and returns it
func DetectKubeConfig(configfile []byte) (config *rest.Config, err error) {
if len(configfile) > 0 {
var cfgFile []byte
cfgFile, err = processConfig(configfile)
if err != nil {
return nil, err
}
if config, err = clientcmd.RESTConfigFromKubeConfig(cfgFile); err == nil {
return config, err
}
}
// If deployed within the cluster
if config, err = rest.InClusterConfig(); err == nil {
return config, err
}
// Look for kubeconfig from the path mentioned in $KUBECONFIG
kubeconfig := os.Getenv("KUBECONFIG")
if kubeconfig != "" {
if config, err = clientcmd.BuildConfigFromFlags("", kubeconfig); err == nil {
return config, err
}
}
// Look for kubeconfig at the default path
path := filepath.Join(utils.GetHome(), ".kube", "config")
if config, err = clientcmd.BuildConfigFromFlags("", path); err == nil {
return config, err
}
return
}
func processConfig(configFile []byte) ([]byte, error) {
cfg, err := clientcmd.Load(configFile)
if err != nil {
return nil, ErrLoadConfig(err)
}
err = clientcmdapi.MinifyConfig(cfg)
if err != nil {
return nil, ErrValidateConfig(err)
}
err = clientcmdapi.FlattenConfig(cfg)
if err != nil {
return nil, ErrValidateConfig(err)
}
err = clientcmd.Validate(*cfg)
if err != nil {
return nil, ErrValidateConfig(err)
}
return clientcmd.Write(*cfg)
}