if labels.SubsetOf(instance.Labels) {
				out = append(out, instance)
			}
		}
	}

	return out
}

// ServiceEndpoints returns the cached instances by svc if exists.
func (ps *PushContext) ServiceEndpoints(svcKey string) map[int][]*IstioEndpoint {
	if instances, exists := ps.ServiceIndex.instancesByPort[svcKey]; exists {
		return instances
	}

	return nil
}