date := sumHMAC([]byte("AWS4"+secretKey), []byte(currTime.Format(yyyymmdd)))
	region := sumHMAC(date, []byte(globalMinioDefaultRegion))
	service := sumHMAC(region, []byte(string(serviceS3)))
	signingKey := sumHMAC(service, []byte("aws4_request"))

	signature := hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))

	// final Authorization header
	parts := []string{

}

// OnServiceAdd is called whenever creation of new service object
// is observed.
func (proxier *Proxier) OnServiceAdd(service *v1.Service) {
	proxier.OnServiceUpdate(nil, service)
}

// OnServiceUpdate is called whenever modification of an existing
// service object is observed.
func (proxier *Proxier) OnServiceUpdate(oldService, service *v1.Service) {

		cases := []struct {
			name     string
			p        *model.Proxy
			cfg      []config.Config
			services []*model.Service
		}{
			{
				name:     "simple",
				p:        p,
				services: []*model.Service{svc},
			},
			{
				name:     "sidecar with service",
				p:        p,
				services: []*model.Service{svc},
				cfg:      []config.Config{sidecarConfig},
			},
			{
				name:     "sidecar",