def load_class_by_alias_or_classname(namespace, name):
"""Load class using stevedore alias or the class name
Load class using the stevedore driver manager
:param namespace: namespace where the alias is defined
:param name: alias or class name of the class to be loaded
:returns: class if calls can be loaded
:raises ImportError: if class cannot be loaded
"""
if not name:
LOG.error("Alias or class name is not set")
raise ImportError(_("Class not found."))
try:
# Try to resolve class by alias
mgr = driver.DriverManager(namespace, name)
class_to_load = mgr.driver
except RuntimeError:
e1_info = sys.exc_info()
# Fallback to class name
try:
class_to_load = importutils.import_class(name)
except (ImportError, ValueError):
LOG.error("Error loading class by alias",
exc_info=e1_info)
LOG.error("Error loading class by class name",
exc_info=True)
raise ImportError(_("Class not found."))
return class_to_load
def show(self, request, id):
# NOTE(dprince): the extensions alias is used as the 'id' for show
ext = self.extension_manager.extensions.get(id)
if not ext:
raise webob.exc.HTTPNotFound(
_("Extension with alias %s does not exist") % id)
return dict(extension=self._translate(ext))
class ApmecException(Exception):
"""Base Apmec Exception.
To correctly use this class, inherit from it and define
a 'message' property. That message will get printf'd
with the keyword arguments provided to the constructor.
"""
message = _("An unknown exception occurred.")
def __init__(self, **kwargs):
try:
super(ApmecException, self).__init__(self.message % kwargs)
self.msg = self.message % kwargs
except Exception:
with excutils.save_and_reraise_exception() as ctxt:
if not self.use_fatal_exceptions():
ctxt.reraise = False
# at least get the core message out if something happened
super(ApmecException, self).__init__(self.message)
if six.PY2:
def __unicode__(self):
return unicode(self.msg)
def __str__(self):
return self.msg
def use_fatal_exceptions(self):
"""Is the instance using fatal exceptions.
:returns: Always returns False.
"""
return False
class NetworkVlanRangeError(ApmecException):
message = _("Invalid network VLAN range: '%(vlan_range)s' - '%(error)s'")
def __init__(self, **kwargs):
# Convert vlan_range tuple to 'start:end' format for display
if isinstance(kwargs['vlan_range'], tuple):
kwargs['vlan_range'] = "%d:%d" % kwargs['vlan_range']
super(NetworkVlanRangeError, self).__init__(**kwargs)
def __init__(self, kind, match):
# Process the match
try:
self.target_field = re.findall(r'^\%\((.*)\)s$', match)[0]
except IndexError:
err_reason = (_("Unable to identify a target field from:%s. "
"Match should be in the form %%(<field_name>)s") %
match)
LOG.exception(err_reason)
raise exceptions.PolicyInitError(policy="%s:%s" % (kind, match),
reason=err_reason)
super(OwnerCheck, self).__init__(kind, match)
def _update_meca_wait(self_obj, meca_id, execution_id):
exec_state = "RUNNING"
mistral_retries = MISTRAL_RETRIES
while exec_state == "RUNNING" and mistral_retries > 0:
time.sleep(MISTRAL_RETRY_WAIT)
exec_state = self._vim_drivers.invoke(
driver_type,
'get_execution',
execution_id=execution_id,
auth_dict=self.get_auth_dict(context)).state
LOG.debug('status: %s', exec_state)
if exec_state == 'SUCCESS' or exec_state == 'ERROR':
break
mistral_retries = mistral_retries - 1
error_reason = None
if mistral_retries == 0 and exec_state == 'RUNNING':
error_reason = _(
"MECA update is not completed within"
" {wait} seconds as creation of mistral"
" execution {mistral} is not completed").format(
wait=MISTRAL_RETRIES * MISTRAL_RETRY_WAIT,
mistral=execution_id)
exec_obj = self._vim_drivers.invoke(
driver_type,
'get_execution',
execution_id=execution_id,
auth_dict=self.get_auth_dict(context))
self._vim_drivers.invoke(driver_type,
'delete_execution',
execution_id=execution_id,
auth_dict=self.get_auth_dict(context))
self._vim_drivers.invoke(driver_type,
'delete_workflow',
workflow_id=workflow['id'],
auth_dict=self.get_auth_dict(context))
super(MeoPlugin,
self)._update_meca_post(context, meca_id, exec_obj,
mead_dict, error_reason)
class MECAInUse(exceptions.InUse):
message = _('MECA %(meca_id)s is still in use')
class VimFromMeaNotFoundException(exceptions.NotFound):
message = _('VIM from MEA %(mea_id)s could not be found')
class VimGetResourceNameNotUnique(exceptions.ApmecException):
message = _("Getting resource id from VIM with resource name %(name)s "
"by %(cmd)s returns more than one")
class VimUnsupportedResourceTypeException(exceptions.ApmecException):
message = _("Resource type %(type)s is unsupported by VIM")
class VimRegionNotFoundException(exceptions.ApmecException):
message = _("Unknown VIM region name %(region_name)s")
class VimNotFoundException(exceptions.ApmecException):
message = _("Specified VIM id %(vim_id)s is invalid. Please verify and "
"pass a valid VIM id")
class MESInUse(exceptions.InUse):
message = _('MES %(mes_id)s is still in use')
class InsufficientCredentialDataError(ApmecException):
message = _('Insufficient credential data was provided, either '
'"token" must be set in the passed conf, or a context '
'with an "auth_token" property must be passed.')
class AuthTypeInvalidError(ApmecException):
message = _("Invalid auth_type was specified, auth_type: %(type)s")
class VimDefaultNotDefined(exceptions.ApmecException):
message = _("Default VIM is not defined.")
class VimDefaultDuplicateException(exceptions.ApmecException):
message = _("Default VIM already exists %(vim_id)s.")
class MESNotFound(exceptions.NotFound):
message = _('MES %(mes_id)s could not be found')
class MECANotFound(exceptions.NotFound):
message = _('MECA %(meca_id)s could not be found')
class VNFFGDNotFound(exceptions.NotFound):
message = _('VNFFGD template(s) not existed for MESD %(mesd_name)')
class VimKeyNotFoundException(exceptions.ApmecException):
message = _("Unable to find key file for VIM %(vim_id)s")
class MECDriverNotfound(exceptions.NotFound):
message = _('MEC driver not specified for the MESD %(mesd_name)')
class VimGetResourceException(exceptions.ApmecException):
message = _("Error while trying to issue %(cmd)s to find resource type "
"%(type)s by resource name %(name)s")
class NFVDriverNotFound(exceptions.NotFound):
message = _('NFV driver is not specified for the MESD %(mesd_name)')
class VimGetResourceNotFoundException(exceptions.ApmecException):
message = _("Getting resource id from VIM with resource name %(name)s "
"by %(cmd)s returns nothing")
class VimUnauthorizedException(exceptions.ApmecException):
message = _("%(message)s")
class ToscaParserFailed(exceptions.InvalidInput):
message = _("tosca-parser failed: - %(error_msg_details)s")
class VimConnectionException(exceptions.ApmecException):
message = _("%(message)s")
class NoTasksException(exceptions.ApmecException):
message = _('No tasks to run for %(action)s on %(resource)s')
class VimInUseException(exceptions.ApmecException):
message = _("VIM %(vim_id)s is still in use by MEA")
