proxiedHeadRequestsFailures         MetricName = "proxied_head_requests_failures"
	proxiedPutTaggingRequestFailures    MetricName = "proxied_put_tagging_requests_failures"
	proxiedGetTaggingRequestFailures    MetricName = "proxied_get_tagging_requests_failures"
	proxiedDeleteTaggingRequestFailures MetricName = "proxied_delete_tagging_requests_failures"

	freeBytes       MetricName = "free_bytes"

			},
			Bucket:    roi.Bucket,
			OpType:    replication.HealReplicationType,
			EventType: ReplicateHealDelete,
		}
		// heal delete marker replication failure or versioned delete replication failure
		if roi.ReplicationStatus == replication.Pending ||
			roi.ReplicationStatus == replication.Failed ||
			roi.VersionPurgeStatus == Failed || roi.VersionPurgeStatus == Pending {

		int64(buffer1.Len()), buffer1, s.accessKey, s.secretKey, s.signer)
	c.Assert(err, nil)
	// set Content-Md5 to invalid value.
	request.Header.Set("Content-Md5", "kvLTlMrX9NpYDQlEIFlnDA==")
	// expecting a failure during upload.
	response, err = s.client.Do(request)
	c.Assert(err, nil)
	// Since Content-Md5 header was wrong, expecting to fail with "SignatureDoesNotMatch" error.

	res = madmin.SRResyncOpStatus{
		Status:   ResyncStarted.String(),
		OpType:   "start",
		ResyncID: rs.ResyncID,
		Buckets:  res.Buckets,
	}
	if len(res.Buckets) > 0 {
		res.ErrDetail = "partial failure in starting site resync"
	}
	if len(buckets) != 0 && len(res.Buckets) == len(buckets) {
		return res, fmt.Errorf("all buckets resync failed")
	}
	return res, nil
}

          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "minio_bucket_replication_proxied_head_requests_failures{job=\"$scrape_jobs\"}",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{instance}}",
          "refId": "A"
        }
      ],

	"github.com/minio/minio/internal/hash/sha256"
	xhttp "github.com/minio/minio/internal/http"
	ioutilx "github.com/minio/minio/internal/ioutil"
)

// Type to capture different modifications to API request to simulate failure cases.
type Fault int

const (
	None Fault = iota
	MissingContentLength
	TooBigObject
	TooBigDecodedLength
	BadSignature
	BadMD5
	MissingUploadID
)