# Extra Data Types { #extra-data-types }

Up to now, you have been using common data types, like:

* `int`
* `float`
* `str`
* `bool`

But you can also use more complex data types.

And you will still have the same features as seen up to now:

* Great editor support.
* Data conversion from incoming requests.
* Data conversion for response data.
* Data validation.
* Automatic annotation and documentation.

)

// initDataScanner will start the scanner in the background.
func initDataScanner(ctx context.Context, objAPI ObjectLayer) {
	go func() {
		r := rand.New(rand.NewSource(time.Now().UnixNano()))
		// Run the data scanner in a loop
		for {
			runDataScanner(ctx, objAPI)
			duration := max(time.Duration(r.Float64()*float64(scannerCycle.Load())),
				// Make sure to sleep at least a second to avoid high CPU ticks.
				time.Second)

		hashPathCutSet = dataUsageRoot + string(filepath.Separator)
	}
}

// hashPath calculates a hash of the provided string.
func hashPath(data string) dataUsageHash {
	if data != dataUsageRoot {
		data = strings.Trim(data, hashPathCutSet)
	}
	return dataUsageHash(path.Clean(data))
}

//msgp:ignore dataUsageHashMap
type dataUsageHashMap map[string]struct{}

// DecodeMsg implements msgp.Decodable

	fivs := make([]FileInfo, 5)
	objInfos := make([]ObjectInfo, 5)
	objRetentionMeta := make(map[string]string)
	objRetentionMeta[strings.ToLower(xhttp.AmzObjectLockMode)] = string(objectlock.RetCompliance)
	// Set retain until date 12 hours into the future
	objRetentionMeta[strings.ToLower(xhttp.AmzObjectLockRetainUntilDate)] = amztime.ISO8601Format(now.Add(12 * time.Hour))
	/*
		objInfos:
		version stack for obj-1
		v5 uuid-5 modTime

Klaus Post <******@****.***> 1756435188 +0200

Klaus Post <******@****.***> 1756435188 +0200

	// Add the algorithm condition, only accept AWS SignV4 Sha256.
	algorithmConditionStr := `["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"]`
	// Add the date condition, only accept the current date.
	dateConditionStr := fmt.Sprintf(`["eq", "$x-amz-date", "%s"]`, t.Format(iso8601DateFormat))
	// Add the credential string, only accept the credential passed.

	z, ok := o.UserDefined[archiveInfoMetadataKey]
	if !ok {
		return nil
	}
	data := []byte(z)
	if v, ok := o.UserDefined[archiveTypeMetadataKey]; ok && v == archiveTypeEnc {
		decrypted, err := o.metadataDecrypter(h)(archiveTypeEnc, data)
		if err != nil {
			encLogIf(GlobalContext, err)
			return nil
		}
		data = decrypted
	}
	return data
}

// Clone - Returns a cloned copy of current objectInfo

		t.Fatalf("Failed to read xl meta data %v", reducedErr)
	}

	// Test 1: Test that all disks are returned without any failures with
	// unmodified meta data
	erasureDisks = s.getDisks()
	partsMetadata, errs := readAllFileInfo(ctx, erasureDisks, "", bucket, object, "", false, true)
	if err != nil {
		t.Fatalf("Failed to read xl meta data %v", err)
	}

                smbAuthentication.getUsername(), smbAuthentication.getPassword());
    }

    /**
     * Retrieves response data for the given URI.
     *
     * @param uri the URI to retrieve data from
     * @param includeContent whether to include content in the response
     * @return the response data
     */
    protected ResponseData getResponseData(final String uri, final boolean includeContent) {