Spec 24062: Support Python 3

 - added execeptions to handle_response, since it would otherwise just swallow anything not 200

Author: labkey-ians

labkey/exceptions.py

@@ -0,0 +1,68 @@
+#
+# Copyright (c) 2015 LabKey Corporation
+#
+# 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.
+#
+from requests import exceptions
+
+
+# base exception class for server responses
+class RequestError(exceptions.HTTPError):
+    default_msg = 'Server Error'
+
+    def __init__(self, server_response=None):
+        if server_response is not None:
+            try:
+                decoded = server_response.json()
+                if 'exception' in decoded:
+                    # use labkey server error message if available
+                    msg = decoded['exception']
+                    self.server_exception = decoded
+                else:
+                    msg = self.default_msg
+            except ValueError:
+                # no valid json to decode
+                raise ServerNotFoundError(server_response)
+
+            self.message = '{0}: {1}'.format(server_response.status_code, msg)
+
+        self.response = server_response
+
+
+class QueryNotFoundError(RequestError):
+    default_msg = 'Query Resource Not Found'
+
+
+class RequestAuthorizationError(RequestError):
+    default_msg = 'Authorization Failed'
+
+
+class ServerNotFoundError(RequestError):
+    SERVER_NOT_FOUND_MSG = 'Server resource not found. Please verify context path and project path are valid'
+
+    def __init__(self, server_response=None):
+        self.message = '{0}: {1}'.format(server_response.status_code, self.SERVER_NOT_FOUND_MSG)
+        self.response = server_response
+
+
+class ServerContextError(exceptions.HTTPError):
+    def __init__(self, inner_exception=None):
+        self.message = self._get_message(inner_exception)
+        self.exception = inner_exception
+
+    def _get_message(self, e):
+        switcher = {
+            exceptions.SSLError:
+                'Failed to match server SSL configuration. Ensure the server_context is configured correctly.'
+        }
+        return switcher.get(type(e), 'Please verify server_context is configured correctly')