Example #1
0
// Updates the external load balancer of a service, assuming we hold the mutex
// associated with the service.
func (s *ServiceController) lockedUpdateLoadBalancerHosts(service *api.Service, hosts []string) error {
	if !wantsExternalLoadBalancer(service) {
		return nil
	}

	// This operation doesn't normally take very long (and happens pretty often), so we only record the final event
	name := cloudprovider.GetLoadBalancerName(service)
	err := s.balancer.UpdateTCPLoadBalancer(name, s.zone.Region, hosts)
	if err == nil {
		s.eventRecorder.Event(service, "UpdatedLoadBalancer", "Updated load balancer with new hosts")
		return nil
	}

	// It's only an actual error if the load balancer still exists.
	if _, exists, err := s.balancer.GetTCPLoadBalancer(name, s.zone.Region); err != nil {
		glog.Errorf("External error while checking if TCP load balancer %q exists: name, %v", name, err)
	} else if !exists {
		return nil
	}

	s.eventRecorder.Eventf(service, "LoadBalancerUpdateFailed", "Error updating load balancer with new hosts: %v", err)
	return err
}
Example #2
0
func (s *ServiceController) loadBalancerName(service *api.Service) string {
	return cloudprovider.GetLoadBalancerName(service)
}