292 lines
9.5 KiB
Python
292 lines
9.5 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Heat exception subclasses"""
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import functools
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import urlparse
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class RedirectException(Exception):
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def __init__(self, url):
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self.url = urlparse.urlparse(url)
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class HeatException(Exception):
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"""
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Base Heat Exception
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To correctly use this class, inherit from it and define
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a 'message' property. That message will get printf'd
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with the keyword arguments provided to the constructor.
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"""
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message = _("An unknown exception occurred")
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def __init__(self, *args, **kwargs):
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try:
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self._error_string = self.message % kwargs
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except Exception:
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# at least get the core message out if something happened
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self._error_string = self.message
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if len(args) > 0:
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# If there is a non-kwarg parameter, assume it's the error
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# message or reason description and tack it on to the end
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# of the exception message
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# Convert all arguments into their string representations...
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args = ["%s" % arg for arg in args]
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self._error_string = (self._error_string +
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"\nDetails: %s" % '\n'.join(args))
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def __str__(self):
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return self._error_string
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def wrap_exception(notifier=None, publisher_id=None, event_type=None,
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level=None):
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"""This decorator wraps a method to catch any exceptions that may
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get thrown. It logs the exception as well as optionally sending
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it to the notification system.
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"""
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# TODO(sandy): Find a way to import nova.notifier.api so we don't have
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# to pass it in as a parameter. Otherwise we get a cyclic import of
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# nova.notifier.api -> nova.utils -> nova.exception :(
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# TODO(johannes): Also, it would be nice to use
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# utils.save_and_reraise_exception() without an import loop
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def inner(f):
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def wrapped(*args, **kw):
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try:
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return f(*args, **kw)
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except Exception, e:
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# Save exception since it can be clobbered during processing
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# below before we can re-raise
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exc_info = sys.exc_info()
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if notifier:
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payload = dict(args=args, exception=e)
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payload.update(kw)
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# Use a temp vars so we don't shadow
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# our outer definitions.
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temp_level = level
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if not temp_level:
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temp_level = notifier.ERROR
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temp_type = event_type
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if not temp_type:
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# If f has multiple decorators, they must use
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# functools.wraps to ensure the name is
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# propagated.
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temp_type = f.__name__
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notifier.notify(publisher_id, temp_type, temp_level,
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payload)
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# re-raise original exception since it may have been clobbered
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raise exc_info[0], exc_info[1], exc_info[2]
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return functools.wraps(f)(wrapped)
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return inner
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class NovaException(Exception):
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"""Base Nova Exception
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To correctly use this class, inherit from it and define
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a 'message' property. That message will get printf'd
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with the keyword arguments provided to the constructor.
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"""
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message = _("An unknown exception occurred.")
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def __init__(self, message=None, **kwargs):
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self.kwargs = kwargs
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if 'code' not in self.kwargs:
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try:
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self.kwargs['code'] = self.code
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except AttributeError:
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pass
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if not message:
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try:
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message = self.message % kwargs
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except Exception as e:
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# at least get the core message out if something happened
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message = self.message
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super(NovaException, self).__init__(message)
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class MissingArgumentError(HeatException):
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message = _("Missing required argument.")
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class MissingCredentialError(HeatException):
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message = _("Missing required credential: %(required)s")
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class BadAuthStrategy(HeatException):
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message = _("Incorrect auth strategy, expected \"%(expected)s\" but "
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"received \"%(received)s\"")
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class NotFound(HeatException):
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message = _("An object with the specified identifier was not found.")
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class UnknownScheme(HeatException):
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message = _("Unknown scheme '%(scheme)s' found in URI")
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class BadStoreUri(HeatException):
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message = _("The Store URI %(uri)s was malformed. Reason: %(reason)s")
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class Duplicate(HeatException):
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message = _("An object with the same identifier already exists.")
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class StorageFull(HeatException):
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message = _("There is not enough disk space on the image storage media.")
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class StorageWriteDenied(HeatException):
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message = _("Permission to write image storage media denied.")
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class ImportFailure(HeatException):
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message = _("Failed to import requested object/class: '%(import_str)s'. "
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"Reason: %(reason)s")
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class AuthBadRequest(HeatException):
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message = _("Connect error/bad request to Auth service at URL %(url)s.")
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class AuthUrlNotFound(HeatException):
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message = _("Auth service at URL %(url)s not found.")
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class AuthorizationFailure(HeatException):
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message = _("Authorization failed.")
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class NotAuthorized(HeatException):
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message = _("You are not authorized to complete this action.")
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class NotAuthorizedPublicImage(NotAuthorized):
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message = _("You are not authorized to complete this action.")
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class Invalid(HeatException):
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message = _("Data supplied was not valid.")
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class AuthorizationRedirect(HeatException):
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message = _("Redirecting to %(uri)s for authorization.")
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class DatabaseMigrationError(HeatException):
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message = _("There was an error migrating the database.")
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class ClientConnectionError(HeatException):
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message = _("There was an error connecting to a server")
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class ClientConfigurationError(HeatException):
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message = _("There was an error configuring the client.")
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class MultipleChoices(HeatException):
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message = _("The request returned a 302 Multiple Choices. This generally "
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"means that you have not included a version indicator in a "
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"request URI.\n\nThe body of response returned:\n%(body)s")
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class LimitExceeded(HeatException):
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message = _("The request returned a 413 Request Entity Too Large. This "
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"generally means that rate limiting or a quota threshold was "
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"breached.\n\nThe response body:\n%(body)s")
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def __init__(self, *args, **kwargs):
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self.retry_after = (int(kwargs['retry']) if kwargs.get('retry')
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else None)
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super(LimitExceeded, self).__init__(*args, **kwargs)
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class ServiceUnavailable(HeatException):
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message = _("The request returned a 503 ServiceUnavilable. This "
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"generally occurs on service overload or other transient "
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"outage.")
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def __init__(self, *args, **kwargs):
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self.retry_after = (int(kwargs['retry']) if kwargs.get('retry')
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else None)
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super(ServiceUnavailable, self).__init__(*args, **kwargs)
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class RequestUriTooLong(HeatException):
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message = _("The URI was too long.")
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class InvalidContentType(HeatException):
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message = _("Invalid content type %(content_type)s")
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class BadRegistryConnectionConfiguration(HeatException):
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message = _("Registry was not configured correctly on API server. "
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"Reason: %(reason)s")
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class BadStoreConfiguration(HeatException):
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message = _("Store %(store_name)s could not be configured correctly. "
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"Reason: %(reason)s")
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class BadDriverConfiguration(HeatException):
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message = _("Driver %(driver_name)s could not be configured correctly. "
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"Reason: %(reason)s")
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class StoreDeleteNotSupported(HeatException):
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message = _("Deleting images from this store is not supported.")
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class StoreAddDisabled(HeatException):
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message = _("Configuration for store failed. Adding images to this "
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"store is disabled.")
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class InvalidNotifierStrategy(HeatException):
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message = _("'%(strategy)s' is not an available notifier strategy.")
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class MaxRedirectsExceeded(HeatException):
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message = _("Maximum redirects (%(redirects)s) was exceeded.")
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class InvalidRedirect(HeatException):
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message = _("Received invalid HTTP redirect.")
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class NoServiceEndpoint(HeatException):
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message = _("Response from Keystone does not contain a Heat endpoint.")
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class RegionAmbiguity(HeatException):
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message = _("Multiple 'image' service matches for region %(region)s. This "
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"generally means that a region is required and you have not "
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"supplied one.")
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