Function locationHeaderCheck

lib/api/apiUtils/object/locationHeaderCheck.js:16–35

* locationHeaderCheck - compares 'x-amz-location-constraint' header * to location constraints in config * @param {object} headers - request headers * @param {string} objectKey - key name of object * @param {string} bucketName - name of bucket * @return {undefined|Object} returns error, object,

(headers, objectKey, bucketName)

 * @return {string} - return.locationType - type of location constraint
 */
function locationHeaderCheck(headers, objectKey, bucketName) {
    const location = headers['x-amz-location-constraint'];
    if (location) {
        const validLocation = config.locationConstraints[location];
        if (!validLocation) {
            return errorInstances.InvalidLocationConstraint.customizeDescription(
                'Invalid location constraint specified in header');
        }
        const bucketMatch = validLocation.details.bucketMatch;
        const backendKey = bucketMatch ? objectKey :
            `${bucketName}/${objectKey}`;
        return {
            location,
            key: backendKey,
            locationType: validLocation.type,
        };
    }
    // no location header was passed
    return undefined;
}

module.exports = locationHeaderCheck;