a75f055caf
Implements cancelling of stack update in progress, for any stack regardless of disable_rollback status. As a side-effect, a framework for sending arbitrary one-time signals from outside into a task running as greenthread is added. ThreadgroupManager holds references of greenlet events associated with a given stack now. Implements blueprint cancel-update-stack (partial) Change-Id: Ic929d42946cf28eeb2a7caea8bf908f492693c09
364 lines
11 KiB
Python
364 lines
11 KiB
Python
#
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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 sys
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import six
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from six.moves.urllib import parse as urlparse
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from heat.openstack.common.gettextutils import _
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from heat.openstack.common import log as logging
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_FATAL_EXCEPTION_FORMAT_ERRORS = False
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LOG = logging.getLogger(__name__)
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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 KeystoneError(Exception):
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def __init__(self, code, message):
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self.code = code
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self.message = message
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def __str__(self):
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return "Code: %s, message: %s" % (self.code, self.message)
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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 as 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 HeatException(Exception):
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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 'msg_fmt' property. That msg_fmt 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, **kwargs):
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self.kwargs = kwargs
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try:
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self.message = self.msg_fmt % kwargs
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except KeyError:
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exc_info = sys.exc_info()
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#kwargs doesn't match a variable in the message
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#log the issue and the kwargs
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LOG.exception(_('Exception in string format operation'))
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for name, value in six.iteritems(kwargs):
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LOG.error("%s: %s" % (name, value)) # noqa
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if _FATAL_EXCEPTION_FORMAT_ERRORS:
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raise exc_info[0], exc_info[1], exc_info[2]
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def __str__(self):
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return unicode(self.message).encode('UTF-8')
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def __unicode__(self):
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return unicode(self.message)
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def __deepcopy__(self, memo):
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return self.__class__(**self.kwargs)
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class MissingCredentialError(HeatException):
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msg_fmt = _("Missing required credential: %(required)s")
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class BadAuthStrategy(HeatException):
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msg_fmt = _("Incorrect auth strategy, expected \"%(expected)s\" but "
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"received \"%(received)s\"")
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class AuthBadRequest(HeatException):
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msg_fmt = _("Connect error/bad request to Auth service at URL %(url)s.")
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class AuthUrlNotFound(HeatException):
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msg_fmt = _("Auth service at URL %(url)s not found.")
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class AuthorizationFailure(HeatException):
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msg_fmt = _("Authorization failed.")
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class NotAuthenticated(HeatException):
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msg_fmt = _("You are not authenticated.")
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class Forbidden(HeatException):
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msg_fmt = _("You are not authorized to complete this action.")
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#NOTE(bcwaldon): here for backwards-compatibility, need to deprecate.
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class NotAuthorized(Forbidden):
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msg_fmt = _("You are not authorized to complete this action.")
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class Invalid(HeatException):
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msg_fmt = _("Data supplied was not valid: %(reason)s")
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class AuthorizationRedirect(HeatException):
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msg_fmt = _("Redirecting to %(uri)s for authorization.")
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class RequestUriTooLong(HeatException):
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msg_fmt = _("The URI was too long.")
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class MaxRedirectsExceeded(HeatException):
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msg_fmt = _("Maximum redirects (%(redirects)s) was exceeded.")
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class InvalidRedirect(HeatException):
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msg_fmt = _("Received invalid HTTP redirect.")
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class RegionAmbiguity(HeatException):
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msg_fmt = _("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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class UserParameterMissing(HeatException):
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msg_fmt = _("The Parameter (%(key)s) was not provided.")
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class UnknownUserParameter(HeatException):
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msg_fmt = _("The Parameter (%(key)s) was not defined in template.")
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class InvalidTemplateVersion(HeatException):
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msg_fmt = _("The template version is invalid: %(explanation)s")
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class InvalidTemplateSection(HeatException):
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msg_fmt = _("The template section is invalid: %(section)s")
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class InvalidTemplateParameter(HeatException):
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msg_fmt = _("The Parameter (%(key)s) has no attributes.")
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class InvalidTemplateAttribute(HeatException):
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msg_fmt = _("The Referenced Attribute (%(resource)s %(key)s)"
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" is incorrect.")
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class InvalidTemplateReference(HeatException):
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msg_fmt = _("The specified reference \"%(resource)s\" (in %(key)s)"
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" is incorrect.")
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class UserKeyPairMissing(HeatException):
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msg_fmt = _("The Key (%(key_name)s) could not be found.")
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class FlavorMissing(HeatException):
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msg_fmt = _("The Flavor ID (%(flavor_id)s) could not be found.")
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class ImageNotFound(HeatException):
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msg_fmt = _("The Image (%(image_name)s) could not be found.")
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class PhysicalResourceNameAmbiguity(HeatException):
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msg_fmt = _(
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"Multiple physical resources were found with name (%(name)s).")
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class InvalidTenant(HeatException):
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msg_fmt = _("Searching Tenant %(target)s "
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"from Tenant %(actual)s forbidden.")
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class StackNotFound(HeatException):
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msg_fmt = _("The Stack (%(stack_name)s) could not be found.")
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class StackExists(HeatException):
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msg_fmt = _("The Stack (%(stack_name)s) already exists.")
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class StackValidationFailed(HeatException):
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msg_fmt = _("%(message)s")
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class InvalidSchemaError(HeatException):
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msg_fmt = _("%(message)s")
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class ResourceNotFound(HeatException):
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msg_fmt = _("The Resource (%(resource_name)s) could not be found "
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"in Stack %(stack_name)s.")
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class ResourceTypeNotFound(HeatException):
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msg_fmt = _("The Resource Type (%(type_name)s) could not be found.")
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class ResourceNotAvailable(HeatException):
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msg_fmt = _("The Resource (%(resource_name)s) is not available.")
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class PhysicalResourceNotFound(HeatException):
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msg_fmt = _("The Resource (%(resource_id)s) could not be found.")
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class WatchRuleNotFound(HeatException):
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msg_fmt = _("The Watch Rule (%(watch_name)s) could not be found.")
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class ResourceFailure(HeatException):
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msg_fmt = _("%(exc_type)s: %(message)s")
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def __init__(self, exception, resource, action=None):
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if isinstance(exception, ResourceFailure):
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exception = getattr(exception, 'exc', exception)
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self.exc = exception
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self.resource = resource
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self.action = action
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exc_type = type(exception).__name__
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super(ResourceFailure, self).__init__(exc_type=exc_type,
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message=six.text_type(exception))
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class NotSupported(HeatException):
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msg_fmt = _("%(feature)s is not supported.")
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class ResourceActionNotSupported(HeatException):
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msg_fmt = _("%(action)s is not supported for resource.")
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class ResourcePropertyConflict(HeatException):
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msg_fmt = _('Cannot define the following properties at the same time: %s.')
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def __init__(self, *args):
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self.msg_fmt = self.msg_fmt % ", ".join(args)
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super(ResourcePropertyConflict, self).__init__()
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class HTTPExceptionDisguise(Exception):
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"""Disguises HTTP exceptions so they can be handled by the webob fault
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application in the wsgi pipeline.
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"""
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def __init__(self, exception):
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self.exc = exception
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self.tb = sys.exc_info()[2]
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class EgressRuleNotAllowed(HeatException):
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msg_fmt = _("Egress rules are only allowed when "
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"Neutron is used and the 'VpcId' property is set.")
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class Error(HeatException):
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msg_fmt = "%(message)s"
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def __init__(self, msg):
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super(Error, self).__init__(message=msg)
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class NotFound(HeatException):
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def __init__(self, msg_fmt=_('Not found')):
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self.msg_fmt = msg_fmt
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super(NotFound, self).__init__()
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class InvalidContentType(HeatException):
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msg_fmt = _("Invalid content type %(content_type)s")
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class RequestLimitExceeded(HeatException):
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msg_fmt = _('Request limit exceeded: %(message)s')
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class StackResourceLimitExceeded(HeatException):
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msg_fmt = _('Maximum resources per stack exceeded.')
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class ActionInProgress(HeatException):
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msg_fmt = _("Stack %(stack_name)s already has an action (%(action)s) "
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"in progress.")
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class StopActionFailed(HeatException):
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msg_fmt = _("Failed to stop stack (%(stack_name)s) on other engine "
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"(%(engine_id)s)")
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class EventSendFailed(HeatException):
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msg_fmt = _("Failed to send message to stack (%(stack_name)s) "
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"on other engine (%(engine_id)s)")
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