When raising DatasourceNameInUse or DatasourceCreationError in managers/datasource.py in add_datasource, an error gets thrown:
2015-09-04 15:29:56.195 DEBUG congress.managers.datasource [req-aef25e7b-de7e-4410-adcd-584303fd8f35 admin 2ce6b3b11b364d419eac74353a57f2e6] updating db from (pid=47868) add_datasource /opt/stack/congress/congress/managers/datasource.py:50
2015-09-04 15:29:56.256 ERROR congress.exception [req-aef25e7b-de7e-4410-adcd-584303fd8f35 admin 2ce6b3b11b364d419eac74353a57f2e6] Exception in string format operation
2015-09-04 15:29:56.256 TRACE congress.exception Traceback (most recent call last):
2015-09-04 15:29:56.256 TRACE congress.exception File "/opt/stack/congress/congress/exception.py", line 77, in __init__
2015-09-04 15:29:56.256 TRACE congress.exception message = self.msg_fmt % kwargs
2015-09-04 15:29:56.256 TRACE congress.exception KeyError: 'name'
2015-09-04 15:29:56.256 TRACE congress.exception
2015-09-04 15:29:56.257 ERROR congress.exception [req-aef25e7b-de7e-4410-adcd-584303fd8f35 admin 2ce6b3b11b364d419eac74353a57f2e6] code: 409
2015-09-04 15:29:56.257 INFO API-datasource [req-aef25e7b-de7e-4410-adcd-584303fd8f35 admin 2ce6b3b11b364d419eac74353a57f2e6] Datasource Error: Datasource already in use with name %(name)s
2015-09-04 15:29:56.257 DEBUG congress.api.application [req-aef25e7b-de7e-4410-adcd-584303fd8f35 admin 2ce6b3b11b364d419eac74353a57f2e6] ApiApplication: found DataModelException Datasource already in use with name %(name)s from (pid=47868) __call__ /opt/stack/congress/congress/api/application.py:52
Fix proposed to branch: master
Review: https:/