/
labels.go
62 lines (50 loc) · 1.03 KB
/
labels.go
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package filter
type LabelFunc func() string
func (l LabelFunc) Value() string { return l() }
type LabelString string
func (l LabelString) Value() string { return string(l) }
type LabelValue interface {
Value() string
}
type Labels map[string]LabelValue
func (l Labels) MarshalYAML() (interface{}, error) {
if l == nil {
return nil, nil
}
m := make(map[string]string)
for k, v := range l {
if s, ok := v.(LabelString); ok {
m[k] = string(s)
}
}
return m, nil
}
func (l *Labels) UnmarshalYAML(unmarshal func(interface{}) error) error {
var arr []string
err := unmarshal(&arr)
proxy := map[string]string{}
if err == nil {
for _, name := range arr {
proxy[name] = "true"
}
} else {
err = unmarshal(proxy)
}
out := Labels{}
for k, v := range proxy {
out[k] = LabelString(v)
}
*l = out
return err
}
// Labels implements Labelled.
func (l Labels) GetLabels() Labels {
return l
}
func LabelsFromMap(m map[string]string) Labels {
out := Labels{}
for k, v := range m {
out[k] = LabelString(v)
}
return out
}