monasca-api/monasca_api/v2/reference/resource.py

58 lines
2.0 KiB
Python

# Copyright 2014 Hewlett-Packard
# (C) Copyright 2015 Hewlett Packard Enterprise Development Company LP
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import falcon
from oslo_log import log
from monasca_api.common.repositories import exceptions
from monasca_api.v2.common.exceptions import HTTPUnprocessableEntityError
LOG = log.getLogger(__name__)
def resource_try_catch_block(fun):
def try_it(*args, **kwargs):
try:
return fun(*args, **kwargs)
except falcon.HTTPError:
raise
except exceptions.DoesNotExistException:
raise falcon.HTTPNotFound
except exceptions.MultipleMetricsException as ex:
raise falcon.HTTPConflict("MultipleMetrics", str(ex))
except exceptions.AlreadyExistsException as ex:
raise falcon.HTTPConflict(ex.__class__.__name__, str(ex))
except exceptions.InvalidUpdateException as ex:
raise HTTPUnprocessableEntityError(ex.__class__.__name__, str(ex))
except exceptions.RepositoryException as ex:
LOG.exception(ex)
msg = " ".join(map(str, ex.args[0].args))
raise falcon.HTTPInternalServerError('The repository was unable '
'to process your request',
msg)
except Exception as ex:
LOG.exception(ex)
raise falcon.HTTPInternalServerError('Service unavailable',
str(ex))
return try_it