Function parseAttributesHeaders

lib/api/apiUtils/object/objectAttributes.js:19–42

* Parse and validate attribute headers from a request. * @param {object} headers - Request headers object * @param {string} headerName - Name of the header to parse (e.g., 'x-amz-object-attributes') * @param {Set } supportedAttributes - Set of valid attribute names * @returns {Set

(headers, headerName, supportedAttributes)

 * ['ETag', 'ObjectSize', 'x-amz-meta-custom']
 */
function parseAttributesHeaders(headers, headerName, supportedAttributes) {
    const result = new Set();

    const rawValue = headers[headerName];
    if (rawValue === null || rawValue === undefined) {
        return result;
    }

    for (const rawAttr of rawValue.split(',')) {
        let attr = rawAttr.trim();

        if (!supportedAttributes.has(attr)) {
            attr = attr.toLowerCase();
        }

        if (!attr.startsWith('x-amz-meta-') && !supportedAttributes.has(attr)) {
            throw errorInstances.InvalidArgument.customizeDescription('Invalid attribute name specified.');
        }

        result.add(attr);
    }

    return result;
}

/**
 * buildAttributesXml - Builds XML reponse for requested object attributes