diff --git a/synapse/api/errors.py b/synapse/api/errors.py
new file mode 100644
index 0000000000..7ad4d636c2
--- /dev/null
+++ b/synapse/api/errors.py
@@ -0,0 +1,114 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014 matrix.org
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Contains exceptions and error codes."""
+
+import logging
+
+
+class Codes(object):
+ FORBIDDEN = "M_FORBIDDEN"
+ BAD_JSON = "M_BAD_JSON"
+ NOT_JSON = "M_NOT_JSON"
+ USER_IN_USE = "M_USER_IN_USE"
+ ROOM_IN_USE = "M_ROOM_IN_USE"
+ BAD_PAGINATION = "M_BAD_PAGINATION"
+ UNKNOWN = "M_UNKNOWN"
+ NOT_FOUND = "M_NOT_FOUND"
+
+
+class CodeMessageException(Exception):
+ """An exception with integer code and message string attributes."""
+
+ def __init__(self, code, msg):
+ logging.error("%s: %s, %s", type(self).__name__, code, msg)
+ super(CodeMessageException, self).__init__("%d: %s" % (code, msg))
+ self.code = code
+ self.msg = msg
+
+
+class SynapseError(CodeMessageException):
+ """A base error which can be caught for all synapse events."""
+ def __init__(self, code, msg, errcode=""):
+ """Constructs a synapse error.
+
+ Args:
+ code (int): The integer error code (typically an HTTP response code)
+ msg (str): The human-readable error message.
+ err (str): The error code e.g 'M_FORBIDDEN'
+ """
+ super(SynapseError, self).__init__(code, msg)
+ self.errcode = errcode
+
+
+class RoomError(SynapseError):
+ """An error raised when a room event fails."""
+ pass
+
+
+class RegistrationError(SynapseError):
+ """An error raised when a registration event fails."""
+ pass
+
+
+class AuthError(SynapseError):
+ """An error raised when there was a problem authorising an event."""
+
+ def __init__(self, *args, **kwargs):
+ if "errcode" not in kwargs:
+ kwargs["errcode"] = Codes.FORBIDDEN
+ super(AuthError, self).__init__(*args, **kwargs)
+
+
+class EventStreamError(SynapseError):
+ """An error raised when there a problem with the event stream."""
+ pass
+
+
+class LoginError(SynapseError):
+ """An error raised when there was a problem logging in."""
+ pass
+
+
+class StoreError(SynapseError):
+ """An error raised when there was a problem storing some data."""
+ pass
+
+
+def cs_exception(exception):
+ if isinstance(exception, SynapseError):
+ return cs_error(
+ exception.msg,
+ Codes.UNKNOWN if not exception.errcode else exception.errcode)
+ elif isinstance(exception, CodeMessageException):
+ return cs_error(exception.msg)
+ else:
+ logging.error("Unknown exception type: %s", type(exception))
+
+
+def cs_error(msg, code=Codes.UNKNOWN, **kwargs):
+ """ Utility method for constructing an error response for client-server
+ interactions.
+
+ Args:
+ msg (str): The error message.
+ code (int): The error code.
+ kwargs : Additional keys to add to the response.
+ Returns:
+ A dict representing the error response JSON.
+ """
+ err = {"error": msg, "errcode": code}
+ for key, value in kwargs.iteritems():
+ err[key] = value
+ return err
|
