First round cleansing of exceptions

There are too many exception types defined. This patch cleanse some of
them. Following patches upcoming will try combine some exceptions.

Change-Id: I17608a9c01677ec25a7905242944cf14ad1d0dda

senlin/api/middleware/fault.py

@@ -49,14 +49,10 @@ class FaultWrapper(wsgi.Middleware):
         'ActionInProgress': webob.exc.HTTPConflict,
         'ActionNotFound': webob.exc.HTTPNotFound,
         'AttributeError': webob.exc.HTTPBadRequest,
-        'ClusterActionNotSupported': webob.exc.HTTPBadRequest,
-        'ClusterExists': webob.exc.HTTPConflict,
         'ClusterNotFound': webob.exc.HTTPNotFound,
         'EventNotFound': webob.exc.HTTPNotFound,
         'Forbidden': webob.exc.HTTPForbidden,
-        'Invalid': webob.exc.HTTPBadRequest,
         'InvalidParameter': webob.exc.HTTPBadRequest,
-        'InvalidTenant': webob.exc.HTTPForbidden,
         'InvalidSchemaError': webob.exc.HTTPBadRequest,
         'NodeNotFound': webob.exc.HTTPNotFound,
         'NotFound': webob.exc.HTTPNotFound,
@@ -69,11 +65,8 @@ class FaultWrapper(wsgi.Middleware):
         'ProjectNotMatch': webob.exc.HTTPBadRequest,
         'ProfileTypeNotMatch': webob.exc.HTTPBadRequest,
         'RequestLimitExceeded': webob.exc.HTTPBadRequest,
-        'RevertFailed': webob.exc.HTTPInternalServerError,
         'SenlinBadRequest': webob.exc.HTTPBadRequest,
-        'ServerBuildFailed': webob.exc.HTTPInternalServerError,
         'SpecValidationFailed': webob.exc.HTTPBadRequest,
-        'StopActionFailed': webob.exc.HTTPInternalServerError,
         'ValueError': webob.exc.HTTPBadRequest,
     }
 

senlin/common/exception.py

@@ -32,20 +32,6 @@ _FATAL_EXCEPTION_FORMAT_ERRORS = False
 LOG = logging.getLogger(__name__)
 
 
-class RedirectException(Exception):
-    def __init__(self, url):
-        self.url = urlparse.urlparse(url)
-
-
-class KeystoneError(Exception):
-    def __init__(self, code, message):
-        self.code = code
-        self.message = message
-
-    def __str__(self):
-        return "Code: %s, message: %s" % (self.code, self.message)
-
-
 def wrap_exception(notifier=None, publisher_id=None, event_type=None,
                    level=None):
     '''Decorator that wraps a method to catch any exceptions.
@@ -127,27 +113,6 @@ class SenlinException(Exception):
         return self.__class__(**self.kwargs)
 
 
-class MissingCredentialError(SenlinException):
-    msg_fmt = _("Missing required credential: %(required)s")
-
-
-class BadAuthStrategy(SenlinException):
-    msg_fmt = _("Incorrect auth strategy, expected \"%(expected)s\" but "
-                "received \"%(received)s\"")
-
-
-class AuthBadRequest(SenlinException):
-    msg_fmt = _("Connect error/bad request to Auth service at URL %(url)s.")
-
-
-class AuthUrlNotFound(SenlinException):
-    msg_fmt = _("Auth service at URL %(url)s not found.")
-
-
-class AuthorizationFailure(SenlinException):
-    msg_fmt = _("Authorization failed.")
-
-
 class NotAuthenticated(SenlinException):
     msg_fmt = _("You are not authenticated.")
 
@@ -156,40 +121,10 @@ class Forbidden(SenlinException):
     msg_fmt = _("You are not authorized to complete this action.")
 
 
-class NotAuthorized(Forbidden):
-    msg_fmt = _("You are not authorized to complete this action.")
-
-
-class Invalid(SenlinException):
-    msg_fmt = _("Data supplied was not valid: %(reason)s")
-
-
-class AuthorizationRedirect(SenlinException):
-    msg_fmt = _("Redirecting to %(uri)s for authorization.")
-
-
-class RequestUriTooLong(SenlinException):
-    msg_fmt = _("The URI was too long.")
-
-
 class SenlinBadRequest(SenlinException):
     msg_fmt = _("The request is malformed: %(msg)s")
 
 
-class MaxRedirectsExceeded(SenlinException):
-    msg_fmt = _("Maximum redirects (%(redirects)s) was exceeded.")
-
-
-class InvalidRedirect(SenlinException):
-    msg_fmt = _("Received invalid HTTP redirect.")
-
-
-class RegionAmbiguity(SenlinException):
-    msg_fmt = _("Multiple 'image' service matches for region %(region)s. This "
-                "generally means that a region is required and you have not "
-                "supplied one.")
-
-
 class ProjectNotMatch(SenlinException):
     msg_fmt = _("%(message)s")
 
@@ -199,31 +134,14 @@ class MultipleChoices(SenlinException):
                 "Please be more specific.")
 
 
-class UserParameterMissing(SenlinException):
-    msg_fmt = _("The Parameter (%(key)s) was not provided.")
-
-
 class InvalidParameter(SenlinException):
     msg_fmt = _("Invalid value '%(value)s' specified for '%(name)s'")
 
 
-class InvalidTenant(SenlinException):
-    msg_fmt = _("Searching Tenant %(target)s "
-                "from Tenant %(actual)s forbidden.")
-
-
 class ClusterNotFound(SenlinException):
     msg_fmt = _("The cluster (%(cluster)s) could not be found.")
 
 
-class ClusterExists(SenlinException):
-    msg_fmt = _("The cluster (%(cluster_name)s) already exists.")
-
-
-class ClusterNotSpecified(SenlinException):
-    msg_fmt = _("The cluster was not specified.")
-
-
 class NodeNotFound(SenlinException):
     msg_fmt = _("The node (%(node)s) could not be found.")
 
@@ -284,10 +202,6 @@ class NotSupported(SenlinException):
     msg_fmt = _("%(feature)s is not supported.")
 
 
-class ClusterActionNotSupported(SenlinException):
-    msg_fmt = _("%(action)s is not supported for Cluster.")
-
-
 class Error(SenlinException):
     msg_fmt = "%(message)s"
 
@@ -342,24 +256,10 @@ class ActionBeingWorked(SenlinException):
     msg_fmt = _("Worker %(owner)s is working on this action.")
 
 
-class StopActionFailed(SenlinException):
-    msg_fmt = _("Failed to stop cluster (%(cluster_name)s) on other engine "
-                "(%(engine_id)s)")
-
-
 class EventNotFound(SenlinException):
     msg_fmt = _("The event (%(event)s) could not be found.")
 
 
-class EventSendFailed(SenlinException):
-    msg_fmt = _("Failed to send message to cluster (%(cluster_name)s) "
-                "on other engine (%(engine_id)s)")
-
-
-class DriverFailure(SenlinException):
-    msg_fmt = _("Driver '%(driver)s' failed creation: %(exc)s")
-
-
 class HTTPExceptionDisguise(Exception):
     """Disguises HTTP exceptions.
 

senlin/db/sqlalchemy/api.py

@@ -112,7 +112,7 @@ def _paginate_query(context, query, model, limit=None, marker=None,
                                      model_marker, sort_dir)
     except utils.InvalidSortKey as ex:
         # TODO(Qiming): Catch this exception and return to user
-        raise exception.Invalid(reason=ex.message)
+        raise exception.InvalidParameter(name='sort_keys', value=sort_keys)
     return query
 
 

senlin/tests/test_wsgi.py

@@ -205,8 +205,8 @@ class ResourceTest(base.SenlinTestCase):
 class ResourceExceptionHandlingTest(base.SenlinTestCase):
     scenarios = [
         ('client_exceptions', dict(
-            exception=exception.ClusterNotSpecified,
-            exception_catch=exception.ClusterNotSpecified)),
+            exception=exception.NotAuthenticated,
+            exception_catch=exception.NotAuthenticated)),
         ('webob_bad_request', dict(
             exception=webob.exc.HTTPBadRequest,
             exception_catch=exception.HTTPExceptionDisguise)),