deb-sahara/sahara/service/validation.py
Andrey Pavlov 11e6439938 Adding more information to validation errors
All jsonschema validation failures will be printed
in one error message. Also this message will contain
the name of the parameter which doesn't pass validation.

Closes-bug: #1540809

Change-Id: I7fa82d2e873326f8a061ea13394eb0831c638e21
2016-02-20 13:51:25 +03:00

97 lines
2.9 KiB
Python

# Copyright (c) 2013 Mirantis Inc.
#
# 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 functools
from oslo_utils import reflection
from sahara import exceptions as ex
from sahara.i18n import _
from sahara.utils import api as u
from sahara.utils import api_validator
def _get_path(path):
if path:
path_string = path[0]
for x in path[1:]:
path_string += '[%s]' % str(x)
return path_string + ': '
return ''
def _generate_error(errors):
message = [_get_path(list(e.path)) + e.message for e in errors]
if message:
return ex.SaharaException('\n'.join(message), "VALIDATION_ERROR")
def validate(schema, *validators):
def decorator(func):
@functools.wraps(func)
def handler(*args, **kwargs):
request_data = u.request_data()
try:
if schema:
validator = api_validator.ApiValidator(schema)
errors = validator.iter_errors(request_data)
error = _generate_error(errors)
if error:
return u.bad_request(error)
if validators:
for validator in validators:
validator(**kwargs)
except ex.SaharaException as e:
return u.bad_request(e)
except Exception as e:
return u.internal_error(
500, "Error occurred during validation", e)
return func(*args, **kwargs)
return handler
return decorator
def check_exists(get_func, *id_prop, **get_args):
def decorator(func):
@functools.wraps(func)
def handler(*args, **kwargs):
if id_prop and not get_args:
get_args['id'] = id_prop[0]
get_kwargs = {}
for get_arg in get_args:
get_kwargs[get_arg] = kwargs[get_args[get_arg]]
obj = None
try:
obj = get_func(**get_kwargs)
except Exception as e:
cls_name = reflection.get_class_name(e, fully_qualified=False)
if 'notfound' not in cls_name.lower():
raise e
if obj is None:
e = ex.NotFoundException(get_kwargs,
_('Object with %s not found'))
return u.not_found(e)
return func(*args, **kwargs)
return handler
return decorator