Function SetValueFunc

plugin/metadata/provider.go:102–110

SetValueFunc set the metadata label to the value function. If no metadata can be found this is a noop and false is returned. Any existing value is overwritten.

(ctx context.Context, label string, f Func)

// SetValueFunc set the metadata label to the value function. If no metadata can be found this is a noop and
// false is returned. Any existing value is overwritten.
func SetValueFunc(ctx context.Context, label string, f Func) bool {
	if metadata := ctx.Value(key{}); metadata != nil {
		if m, ok := metadata.(md); ok {
			m[label] = f
			return true
		}
	}
	return false
}

// md is metadata information storage.
type md map[string]Func