ErrTooManyRequests
	ErrInvalidRequest
	ErrTransitionStorageClassNotFoundError
	// MinIO storage class error codes
	ErrInvalidStorageClass
	ErrBackendDown
	// Add new extended error codes here.
	// Please open a https://github.com/minio/minio/issues before adding
	// new error codes here.

	ErrMalformedJSON
	ErrAdminNoSuchUser
	ErrAdminNoSuchUserLDAPWarn
	ErrAdminLDAPExpectedLoginName

// Response codes for a locking request.
const (
	RespOK ResponseCode = iota
	RespLockConflict
	RespLockNotInitialized
	RespLockNotFound
	RespErr
)

// LockResp is a locking request response.
type LockResp struct {
	Code ResponseCode
	Err  string

}

// STSError structure
type STSError struct {
	Code           string
	Description    string
	HTTPStatusCode int
}

// STSErrorResponse - error response format
type STSErrorResponse struct {
	XMLName xml.Name `xml:"https://sts.amazonaws.com/doc/2011-06-15/ ErrorResponse" json:"-"`
	Error   struct {
		Type    string `xml:"Type"`
		Code    string `xml:"Code"`
		Message string `xml:"Message"`
	} `xml:"Error"`

	}

	return fi.ToObjectInfo(minioMetaBucket, key, opts.Versioned || opts.VersionSuspended), nil
}

// PutObject - creates an object upon reading from the input stream
// until EOF, erasure codes the data across all disk and additionally
// writes `xl.meta` which carries the necessary metadata for future
// object operations.

	EnvKafkaBatchSize                = "MINIO_NOTIFY_KAFKA_BATCH_SIZE"
	EnvKafkaProducerCompressionCodec = "MINIO_NOTIFY_KAFKA_PRODUCER_COMPRESSION_CODEC"
	EnvKafkaProducerCompressionLevel = "MINIO_NOTIFY_KAFKA_PRODUCER_COMPRESSION_LEVEL"
)

var codecs = map[string]sarama.CompressionCodec{
	"none":   sarama.CompressionNone,
	"gzip":   sarama.CompressionGZIP,
	"snappy": sarama.CompressionSnappy,

	"github.com/minio/minio/internal/hash/sha256"
	xhttp "github.com/minio/minio/internal/http"
	"github.com/minio/pkg/v2/sync/errgroup"
)

// Object was stored with additional erasure codes due to degraded system at upload time
const minIOErasureUpgraded = "x-minio-internal-erasure-upgraded"

const erasureAlgorithm = "rs-vandermonde"

// GetChecksumInfo - get checksum of a part.

## Configuration Directory

. . .
```

Refer [Prometheus documentation](https://prometheus.io/docs/introduction/first_steps/) for more details.

### 2. Configure authentication type for Prometheus metrics

MinIO supports two authentication modes for Prometheus either `jwt` or `public`, by default MinIO runs in `jwt` mode. To allow public access without authentication for prometheus metrics set environment as follows.

```
export MINIO_PROMETHEUS_AUTH_TYPE="public"

	resp, err := client.Do(req)
	if err != nil {
		if xnet.IsNetworkOrHostDown(err, false) {
			return content, AdminError{
				Code:       AdminUpdateURLNotReachable,
				Message:    err.Error(),
				StatusCode: http.StatusServiceUnavailable,
			}
		}
		return content, AdminError{
			Code:       AdminUpdateUnexpectedFailure,
			Message:    err.Error(),
			StatusCode: http.StatusInternalServerError,
		}
	}

		// as a List() call is an important performance improvement.
		//
		// Spark based s3a committers are a  big enough use-case to have this optimization.
		//
		// A sample code to see the improvements is as follows, this sample code is
		// simply a read on JSON from MinIO and write it back as "parquet".
		//
		// import org.apache.spark.sql.SparkSession