Function objectGetAttributes

lib/api/objectGetAttributes.js:64–175

* objectGetAttributes - Retrieves all metadata from an object without returning the object itself * @param {AuthInfo} authInfo - Instance of AuthInfo class with requester's info * @param {object} request - http request object * @param {object} log - Werelogs logger * @param {function} callback -

(authInfo, request, log, callback)

 * @throws {ArsenalError} MethodNotAllowed - if object is a delete marker
 */
async function objectGetAttributes(authInfo, request, log, callback) {
    if (callback) {
        return objectGetAttributes(authInfo, request, log)
            .then(result => callback(null, result.xml, result.responseHeaders))
            .catch(err => callback(err, null, err.responseHeaders ?? {}));
    }

    log.trace('processing request', { method: OBJECT_GET_ATTRIBUTES });
    const { bucketName, objectKey, headers, actionImplicitDenies } = request;

    const versionId = decodeVersionId(request.query);
    if (versionId instanceof Error) {
        log.debug('invalid versionId query', {
            method: OBJECT_GET_ATTRIBUTES,
            versionId: request.query.versionId,
            error: versionId,
        });
        throw versionId;
    }

    const metadataValParams = {
        authInfo,
        bucketName,
        objectKey,
        versionId,
        getDeleteMarker: true,
        requestType: request.apiMethods || OBJECT_GET_ATTRIBUTES,
        request,
    };

    let bucket, objectMD;
    try {
        ({ bucket, objectMD } = await validateBucketAndObj(metadataValParams, actionImplicitDenies, log));
        await checkExpectedBucketOwnerPromise(headers, bucket, log);
    } catch (err) {
        log.debug('error validating bucket and object', {
            method: OBJECT_GET_ATTRIBUTES,
            bucket: bucketName,
            key: objectKey,
            versionId,
            error: err,
        });
        throw err;
    }

    const responseHeaders = collectCorsHeaders(headers.origin, request.method, bucket);

    if (!objectMD) {
        log.debug('object not found', {
            method: OBJECT_GET_ATTRIBUTES,
            bucket: bucketName,
            key: objectKey,
            versionId,
        });
        const err = versionId ? errors.NoSuchVersion : errors.NoSuchKey;
        err.responseHeaders = responseHeaders;
        throw err;
    }