def validate_request(cls,
req,
resource_type,
single_schema=None,
collection_schema=None):
#首先需要是一个合法的json串
json_req = cls.validate_json(req)
use_schema = {
"single": single_schema or cls.single_schema,
"collection": collection_schema or cls.collection_schema
}.get(resource_type)
try:
jsonschema.validate(json_req, use_schema)
except exceptions.ValidationError as exc:
if len(exc.path) > 0:
raise errors.JsonValidationError(
# NOTE(ikutukov): here was a exc.path.pop(). It was buggy
# because JSONSchema error path could contain integers
# and joining integers as string is not a good idea in
# python. So some schema error messages were not working
# properly and give 500 error code except 400.
": ".join([six.text_type(exc.path), exc.message]))
raise errors.JsonValidationError(exc.message)
def validate_attribute(cls, attr_name, attr):
"""Validates a single attribute from settings.yaml.
Dict is of this form::
description: <description>
label: <label>
restrictions:
- <restriction>
- <restriction>
- ...
type: <type>
value: <value>
weight: <weight>
regex:
error: <error message>
source: <regexp source>
We validate that 'value' corresponds to 'type' according to
attribute_type_schemas mapping in json_schema/cluster.py.
If regex is present, we additionally check that the provided string
value matches the regexp.
:param attr_name: Name of the attribute being checked
:param attr: attribute value
:return: attribute or raise InvalidData exception
"""
if not isinstance(attr, dict):
return attr
if 'type' not in attr and 'value' not in attr:
return attr
schema = copy.deepcopy(base_types.ATTRIBUTE_SCHEMA)
type_ = attr.get('type')
if type_:
value_schema = base_types.ATTRIBUTE_TYPE_SCHEMAS.get(type_)
if value_schema:
schema['properties'].update(value_schema)
try:
cls.validate_schema(attr, schema)
except errors.JsonValidationError as e:
raise errors.JsonValidationError('[{0}] {1}'.format(
attr_name, e.message))
# Validate regexp only if some value is present
# Otherwise regexp might be invalid
if attr['value']:
regex_err = restrictions.AttributesRestriction.validate_regex(attr)
if regex_err is not None:
raise errors.JsonValidationError('[{0}] {1}'.format(
attr_name, regex_err))