notificationEventsSentTotal       = "events_sent_total"
	notificationEventsSkippedTotal    = "events_skipped_total"
)

var (
	notificationCurrentSendInProgressMD = NewCounterMD(notificationCurrentSendInProgress, "Number of concurrent async Send calls active to all targets")
	notificationEventsErrorsTotalMD     = NewCounterMD(notificationEventsErrorsTotal, "Events that were failed to be sent to the targets")

func networkMetricsPrometheus(ch chan<- prometheus.Metric) {
	connStats := globalConnStats.toServerConnStats()

	// Network Sent/Received Bytes (internode)
	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(
			prometheus.BuildFQName(interNodeNamespace, "tx", "bytes_total"),
			"Total number of bytes sent to the other peer nodes by current MinIO server instance",
			nil, nil),
		prometheus.CounterValue,

var errLessData = StorageErr("less data available than what was requested")

// errMoreData = returned when more data was sent by the caller than what it was supposed to.
var errMoreData = StorageErr("more data was sent than what was advertised")

// indicates readDirFn to return without further applying the fn()
var errDoneForNow = errors.New("done for now")

					Subsystem: notifySubsystem,
					Name:      "events_sent_total",
					Help:      "Total number of events sent to the targets (deprecated, please use 'minio_notify_target_total_events' instead)",
					Type:      counterMetric,
				},
				Value: float64(nstats.TotalEvents),
			})
			for id, st := range nstats.TargetStats {
				metrics = append(metrics, MetricV2{
					Description: MetricDescription{

// If any of the supplied actions are allowed it will be successful.
// If nil ObjectLayer is returned, the operation is not permitted.
// When nil ObjectLayer has been returned an error has always been sent to w.
func validateAdminReq(ctx context.Context, w http.ResponseWriter, r *http.Request, actions ...policy.AdminAction) (ObjectLayer, auth.Credentials) {
	// Get current object layer instance.
	objectAPI := newObjectLayerFn()

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "sum by (server) (rate(minio_s3_traffic_sent_bytes{job=~\"$scrape_jobs\"}[$__rate_interval]))",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "Data Sent [{{server}}]",
          "refId": "A"
        }
      ],
      "title": "S3 API Egress Rate ",
      "type": "timeseries"
    },

const MinIOMultipartChecksum = "x-minio-multipart-checksum"

// ChecksumType contains information about the checksum type.
type ChecksumType uint32

const (

	// ChecksumTrailing indicates the checksum will be sent in the trailing header.
	// Another checksum type will be set.
	ChecksumTrailing ChecksumType = 1 << iota

	// ChecksumSHA256 indicates a SHA256 checksum.
	ChecksumSHA256
	// ChecksumSHA1 indicates a SHA-1 checksum.

func NewBytesCap(size int) *Bytes {
	b := Bytes(GetByteBufferCap(size))
	return &b
}

// NewBytesWith returns a new Bytes with the provided content.
// When sent as a parameter, the caller gives up ownership of the byte slice.
// When returned as response, the handler also gives up ownership of the byte slice.
func NewBytesWith(b []byte) *Bytes {
	bb := Bytes(b)
	return &bb
}

		}
		if len(params) >= 2 {
			apiErr.Object = decodeDirObject(params[1])
		}
		return apiErr
	}
	return err
}

// SignatureDoesNotMatch - when content md5 does not match with what was sent from client.
type SignatureDoesNotMatch struct{}

func (e SignatureDoesNotMatch) Error() string {
	return "The request signature we calculated does not match the signature you provided. Check your key and signing method."

		// requests.
		spBytes, err := base64.StdEncoding.DecodeString(sp)
		if err != nil {
			// Base64 decoding fails, we should log to indicate
			// something is malforming the request sent by client.
			authNLogIf(GlobalContext, err, logger.ErrorKind)
			return nil, errAuthentication
		}
		claims.MapClaims[sessionPolicyNameExtracted] = string(spBytes)
	}

	return claims.Map(), nil
}