Handle RequestEntityTooLarge error

acoustid/api/errors.py

@@ -25,6 +25,7 @@
 ERROR_INSECURE_REQUEST = 16
 ERROR_UNKNOWN_APPLICATION = 17
 ERROR_FINGERPRINT_NOT_FOUND = 18
+ERROR_REQUEST_TOO_LARGE = 19
 
 
 class WebServiceError(Exception):
@@ -174,3 +175,12 @@ class FingerprintNotFoundError(WebServiceError):
     def __init__(self):
         message = 'fingerprint not found'
         WebServiceError.__init__(self, ERROR_FINGERPRINT_NOT_FOUND, message)
+
+
+class RequestTooLargeError(WebServiceError):
+
+    status = 413
+
+    def __init__(self):
+        message = 'request too large'
+        WebServiceError.__init__(self, ERROR_REQUEST_TOO_LARGE, message)

acoustid/api/v2/__init__.py

@@ -24,6 +24,7 @@
 from acoustid.ratelimiter import RateLimiter
 from werkzeug.wrappers import Request, Response
 from werkzeug.datastructures import MultiDict
+from werkzeug.exceptions import HTTPException, RequestEntityTooLarge
 from acoustid.utils import is_uuid, is_foreignid, check_demo_client_api_key
 from acoustid.api import serialize_response, errors
 
@@ -191,6 +192,10 @@ def handle(self, req):
                     return self._ok(self._handle_internal(params), params.format)
                 except errors.WebServiceError:
                     raise
+                except RequestEntityTooLarge:
+                    raise errors.RequestTooLargeError()
+                except HTTPException:
+                    raise
                 except Exception:
                     logger.exception('Error while handling API request')
                     raise errors.InternalError()