Files
PandaX/apps/devops/services/k8s/pods/fieldpath.go
2022-01-22 17:07:04 +08:00

42 lines
991 B
Go

package pods
import (
"fmt"
"strings"
"k8s.io/apimachinery/pkg/api/meta"
)
// FormatMap formats map[string]string to a string.
func FormatMap(m map[string]string) (fmtStr string) {
for key, value := range m {
fmtStr += fmt.Sprintf("%v=%q\n", key, value)
}
fmtStr = strings.TrimSuffix(fmtStr, "\n")
return
}
// ExtractFieldPathAsString extracts the field from the given object
// and returns it as a string. The object must be a pointer to an
// API type.
func ExtractFieldPathAsString(obj interface{}, fieldPath string) (string, error) {
accessor, err := meta.Accessor(obj)
if err != nil {
return "", nil
}
switch fieldPath {
case "metadata.annotations":
return FormatMap(accessor.GetAnnotations()), nil
case "metadata.labels":
return FormatMap(accessor.GetLabels()), nil
case "metadata.name":
return accessor.GetName(), nil
case "metadata.namespace":
return accessor.GetNamespace(), nil
}
return "", fmt.Errorf("unsupported fieldPath: %v", fieldPath)
}