if hostAddr == "" {
		return "", "", errors.New("unable to process empty address")
	}

	// Simplify the work of url.Parse() and always send a url with
	if !strings.HasPrefix(hostAddr, "http://") && !strings.HasPrefix(hostAddr, "https://") {
		hostAddr = "//" + hostAddr
	}

	// Parse address to extract host and scheme field
	u, err := url.Parse(hostAddr)
	if err != nil {
		return "", "", err
	}

	"github.com/minio/pkg/v3/policy"
)

// Verify if request has JWT.
func isRequestJWT(r *http.Request) bool {
	return strings.HasPrefix(r.Header.Get(xhttp.Authorization), jwtAlgorithm)
}

// Verify if request has AWS Signature Version '4'.
func isRequestSignatureV4(r *http.Request) bool {
	return strings.HasPrefix(r.Header.Get(xhttp.Authorization), signV4Algorithm)
}

// Verify if request has AWS Signature Version '2'.

	// to make parsing easier.
	v4Auth = strings.ReplaceAll(v4Auth, " ", "")
	if v4Auth == "" {
		return sv, ErrAuthHeaderEmpty
	}

	// Verify if the header algorithm is supported or not.
	if !strings.HasPrefix(v4Auth, signV4Algorithm) {
		return sv, ErrSignatureVersionNotSupported
	}

	// Strip off the Algorithm prefix.
	v4Auth = strings.TrimPrefix(v4Auth, signV4Algorithm)

	}, BucketInfo{
		Name: pathJoin(minioMetaBucket, bucketMetaPrefix),
	})

	// Heal latest buckets first.
	sort.Slice(buckets, func(i, j int) bool {
		a, b := strings.HasPrefix(buckets[i].Name, minioMetaBucket), strings.HasPrefix(buckets[j].Name, minioMetaBucket)
		if a != b {
			return a
		}
		return buckets[i].Created.After(buckets[j].Created)
	})

	// Load bucket totals
	cache := dataUsageCache{}

func (h *metricsV3Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	pathComponents := mux.Vars(r)["pathComps"]
	isListingRequest := r.Form.Has("list")

	var buckets []string
	if strings.HasPrefix(pathComponents, "/bucket/") {
		// bucket specific metrics, extract the bucket name from the path.
		// it's the last part of the path. e.g. /bucket/api/<bucket-name>
		bucketIdx := strings.LastIndex(pathComponents, "/")

	stmt.tableAlias = selectAST.From.As
	// Remove quotes from column aliases
	if selectAST.Expression != nil {
		for _, exp := range selectAST.Expression.Expressions {
			if strings.HasSuffix(exp.As, "'") && strings.HasPrefix(exp.As, "'") && len(exp.As) >= 2 {
				exp.As = exp.As[1 : len(exp.As)-1]
			}
		}
	}
	return stmt, err
}

func validateTableName(from *TableExpression) error {

	for name, ok := range selectColumns {
		columnName := ""
		if strings.HasPrefix(name, association.Relationship.Name) {
			if columnName = strings.TrimPrefix(name, association.Relationship.Name); columnName == ".*" {
				columnName = name
			}
		} else if strings.HasPrefix(name, clause.Associations) {
			columnName = name
		}

		if columnName != "" {
			if ok {

			}
		case AWSKms:
			keyID := rule.DefaultEncryptionAction.MasterKeyID
			if keyID == "" {
				return nil, errors.New("MasterKeyID is missing with aws:kms")
			}
			spaces := strings.HasPrefix(keyID, " ") || strings.HasSuffix(keyID, " ")
			if spaces {
				return nil, errors.New("MasterKeyID contains unsupported characters")
			}
		}
	}

	if config.XMLNS == "" {
		config.XMLNS = xmlNS
	}

	if firstTime {
		bfs, err := blockdevice.NewDefaultFS()
		if err == nil {
			devName := ""
			diskstats, _ := bfs.ProcDiskstats()
			for _, dstat := range diskstats {
				// ignore all loop devices
				if strings.HasPrefix(dstat.DeviceName, "loop") {
					continue
				}
				if dstat.MajorNumber == info.Major && dstat.MinorNumber == info.Minor {
					devName = dstat.DeviceName
					break
				}
			}
			if devName != "" {

	var signature [80]byte
	_, err = io.ReadFull(cr.reader, signature[:])
	if err == io.EOF {
		err = io.ErrUnexpectedEOF
	}
	if err != nil {
		cr.err = err
		return n, cr.err
	}
	if !bytes.HasPrefix(signature[:], []byte("chunk-signature=")) {
		cr.err = errMalformedEncoding
		return n, cr.err
	}
	b, err := cr.reader.ReadByte()
	if err == io.EOF {
		err = io.ErrUnexpectedEOF
	}
	if err != nil {