@@ -42,3 +42,16 @@ class MetadataServerHttpError(Error):
 class NoDataError(Error):
     """An error for no data when data is expected."""
     pass
+
+
+class InvalidInputError(Exception):
+    """Exception raised when an invalid input is encountered."""
+
+    def __init__(self, invalid_input):
+        """Constructor for invalid input error.
+
+        Args:
+            invalid_input (dict): the invalid data format in question.
+        """
+        super(InvalidInputError, self).__init__(
+            'Invalid input found: %s' % invalid_input)
# Copyright 2017 The Forseti Security Authors. All rights reserved.
#
# 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.

"""Util Errors module."""


class Error(Exception):
    """Base error class for the module."""


class EmailSendError(Error):
    """Unable to send email."""
    pass


class InvalidFileExtensionError(Error):
    """No parser exists for the given file extension."""
    pass


class InvalidParserTypeError(Error):
    """No parser exists for the given parser type."""
    pass


class MetadataServerHttpError(Error):
    """An error for handling HTTP errors with the metadata server."""
    pass


class NoDataError(Error):
    """An error for no data when data is expected."""
    pass

Please have this sorted.