func HasLabel(obj ObjectMeta, label string) bool {
	_, found := obj.Labels[label]
	return found
}
HasLabel returns a bool if passed in label exists
package v1
import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"k8s.io/apimachinery/pkg/fields"
	"k8s.io/apimachinery/pkg/labels"
	"k8s.io/apimachinery/pkg/selection"
	"k8s.io/apimachinery/pkg/types"
)
func LabelSelectorAsSelector(ps *LabelSelector) (labels.Selector, error) {
	if ps == nil {
		return labels.Nothing(), nil
	}
	if len(ps.MatchLabels)+len(ps.MatchExpressions) == 0 {
		return labels.Everything(), nil
	}
	requirements := make([]labels.Requirement, 0, len(ps.MatchLabels)+len(ps.MatchExpressions))
	for k, v := range ps.MatchLabels {
		r, err := labels.NewRequirement(k, selection.Equals, []string{v})
		if err != nil {
			return nil, err
		}
		requirements = append(requirements, *r)
	}
	for _, expr := range ps.MatchExpressions {
		var op selection.Operator
		switch expr.Operator {
		case LabelSelectorOpIn:
			op = selection.In
		case LabelSelectorOpNotIn:
			op = selection.NotIn
		case LabelSelectorOpExists:
			op = selection.Exists
		case LabelSelectorOpDoesNotExist:
			op = selection.DoesNotExist
		default:
			return nil, fmt.Errorf("%q is not a valid pod selector operator", expr.Operator)
		}
		r, err := labels.NewRequirement(expr.Key, op, append([]string(nil), expr.Values...))
		if err != nil {
			return nil, err
		}
		requirements = append(requirements, *r)
	}
	selector := labels.NewSelector()
	selector = selector.Add(requirements...)
	return selector, nil
}
func LabelSelectorAsMap(ps *LabelSelector) (map[string]string, error) {
	if ps == nil {
		return nil, nil
	}
	selector := map[string]string{}
	for k, v := range ps.MatchLabels {
		selector[k] = v
	}
	for _, expr := range ps.MatchExpressions {
		switch expr.Operator {
		case LabelSelectorOpIn:
			if len(expr.Values) != 1 {
				return selector, fmt.Errorf("operator %q without a single value cannot be converted into the old label selector format", expr.Operator)
			}
			selector[expr.Key] = expr.Values[0]
		case LabelSelectorOpNotIn, LabelSelectorOpExists, LabelSelectorOpDoesNotExist:
			return selector, fmt.Errorf("operator %q cannot be converted into the old label selector format", expr.Operator)
		default:
			return selector, fmt.Errorf("%q is not a valid selector operator", expr.Operator)
		}
	}
	return selector, nil
}
func ParseToLabelSelector(selector string) (*LabelSelector, error) {
	reqs, err := labels.ParseToRequirements(selector)
	if err != nil {
		return nil, fmt.Errorf("couldn't parse the selector string \"%s\": %v", selector, err)
	}
	labelSelector := &LabelSelector{
		MatchLabels:      map[string]string{},
		MatchExpressions: []LabelSelectorRequirement{},
	}
	for _, req := range reqs {
		var op LabelSelectorOperator
		switch req.Operator() {
		case selection.Equals, selection.DoubleEquals:
			vals := req.Values()
			if vals.Len() != 1 {
				return nil, fmt.Errorf("equals operator must have exactly one value")
			}
			val, ok := vals.PopAny()
			if !ok {
				return nil, fmt.Errorf("equals operator has exactly one value but it cannot be retrieved")
			}
			labelSelector.MatchLabels[req.Key()] = val
			continue
		case selection.In:
			op = LabelSelectorOpIn
		case selection.NotIn:
			op = LabelSelectorOpNotIn
		case selection.Exists:
			op = LabelSelectorOpExists
		case selection.DoesNotExist:
			op = LabelSelectorOpDoesNotExist
		case selection.GreaterThan, selection.LessThan:
			return nil, fmt.Errorf("%q isn't supported in label selectors", req.Operator())
		default:
			return nil, fmt.Errorf("%q is not a valid label selector operator", req.Operator())
		}
		labelSelector.MatchExpressions = append(labelSelector.MatchExpressions, LabelSelectorRequirement{
			Key:      req.Key(),
			Operator: op,
			Values:   req.Values().List(),
		})
	}
	return labelSelector, nil
}
func SetAsLabelSelector(ls labels.Set) *LabelSelector {
	if ls == nil {
		return nil
	}
	selector := &LabelSelector{
		MatchLabels: make(map[string]string, len(ls)),
	}
	for label, value := range ls {
		selector.MatchLabels[label] = value
	}
	return selector
}
func FormatLabelSelector(labelSelector *LabelSelector) string {
	selector, err := LabelSelectorAsSelector(labelSelector)
	if err != nil {
		return "<error>"
	}
	l := selector.String()
	if len(l) == 0 {
		l = "<none>"
	}
	return l
}
func ExtractGroupVersions(l *APIGroupList) []string {
	var groupVersions []string
	for _, g := range l.Groups {
		for _, gv := range g.Versions {
			groupVersions = append(groupVersions, gv.GroupVersion)
		}
	}
	return groupVersions
}
func HasAnnotation(obj ObjectMeta, ann string) bool {
	_, found := obj.Annotations[ann]
	return found
}
func SetMetaDataAnnotation(obj *ObjectMeta, ann string, value string) {
	if obj.Annotations == nil {
		obj.Annotations = make(map[string]string)
	}
	obj.Annotations[ann] = value
}