iflytek/astron-agent · error · BusinessException

50006

50006

Error message

system.s3.presign.error

What it means

generatePresignedGetUrl throws the same BusinessException built from ResponseEnum.S3_PRESIGN_ERROR (code 50006, message 'system.s3.presign.error') when the objectKey is null or blank. It is argument validation before any SDK interaction; the numeric code 50006 is what callers see in the error response body.

Solutions

1. Validate the object key in the caller/endpoint layer and return a 400-style error instead of hitting presign
2. Repair the data: backfill the missing object key on the stored record
3. Fix key derivation so it cannot produce an empty value

Example fix

// before
String url = s3ClientUtil.generatePresignedGetUrl(bucket, record.getObjectKey(), 3600);
// after
String key = record.getObjectKey();
if (key == null || key.trim().isEmpty()) {
    throw new IllegalArgumentException("Record has no object key: " + record.getId());
}
String url = s3ClientUtil.generatePresignedGetUrl(bucket, key, 3600);

if (objectKey == null || objectKey.trim().isEmpty()) {
    throw new IllegalArgumentException("objectKey required for presigned GET");
}

static boolean hasText(String s) { return s != null && !s.trim().isEmpty(); }

try {
    return s3ClientUtil.generatePresignedGetUrl(bucket, key, expiry);
} catch (BusinessException e) {
    if ("50006".equals(String.valueOf(e.getCode()))) {
        log.error("presign GET rejected for key '{}'", key, e);
    }
    throw e;
}

When it happens

Trigger: Calling generatePresignedGetUrl(bucket, null, expiry) or with an empty/whitespace object key — e.g. a stored file record with a missing object key field.

Common situations: Database record has NULL object_key, a download endpoint received a missing/blank key parameter, or key derivation from an id produced an empty string.

Understand the failure class

Background: "must not be empty", "cannot be empty" — required-field validation errors across open-source libraries — this error's family across 41 libraries.

Related errors

• S3_PRESIGN_ERROR
• User UID cannot be null
• S3_UPLOAD_ERROR
• Input stream cannot be empty
• PARAM_ERROR

AI-assisted analysis of iflytek/astron-agent@5e758547a8 (2026-09-12). Data as JSON: /api/errors/56fa918e2d613f0e. Report an issue: GitHub.

Appendix: source

Thrown at console/backend/commons/src/main/java/com/iflytek/astron/console/commons/util/S3ClientUtil.java:979

    }

    /**
     * Generate a presigned GET URL for reading/downloading an object.
     *
     * @param bucketName target bucket
     * @param objectKey object key
     * @param expirySeconds expiry in seconds (MinIO requires 1..604800)
     * @return URL usable for HTTP GET
     */
    public String generatePresignedGetUrl(String bucketName, String objectKey, int expirySeconds) {
        // Validate parameters
        if (bucketName == null || bucketName.trim().isEmpty()) {
            log.error("Bucket name cannot be null or empty");
            throw new BusinessException(ResponseEnum.S3_PRESIGN_ERROR);
        }
        if (objectKey == null || objectKey.trim().isEmpty()) {
            log.error("Object key cannot be null or empty");
            throw new BusinessException(ResponseEnum.S3_PRESIGN_ERROR);
        }
        if (expirySeconds < 1 || expirySeconds > 604800) {
            log.error("Expiry seconds must be between 1 and 604800, got: {}", expirySeconds);
            throw new BusinessException(ResponseEnum.S3_PRESIGN_ERROR);
        }

        try {
            return presignClient.getPresignedObjectUrl(
                    GetPresignedObjectUrlArgs.builder()
                            .method(Method.GET)
                            .bucket(bucketName)
                            .object(objectKey)
                            .expiry(expirySeconds)
                            .build());
        } catch (ErrorResponseException | InsufficientDataException | InternalException | InvalidKeyException
                | InvalidResponseException | IOException | NoSuchAlgorithmException | XmlParserException
                | ServerException e) {
            log.error(

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