openapi-core/openapi_core/schema/parameters/models.py
2020-02-03 11:29:01 +00:00

89 lines
2.8 KiB
Python

"""OpenAPI core parameters models module"""
import logging
import warnings
from openapi_core.schema.parameters.enums import (
ParameterLocation, ParameterStyle,
)
from openapi_core.schema.parameters.exceptions import (
MissingRequiredParameter, MissingParameter, InvalidParameterValue,
EmptyParameterValue,
)
from openapi_core.schema.schemas.enums import SchemaType
from openapi_core.casting.schemas.exceptions import CastError
log = logging.getLogger(__name__)
class Parameter(object):
"""Represents an OpenAPI operation Parameter."""
PARAMETER_STYLE_DESERIALIZERS = {
ParameterStyle.FORM: lambda x: x.split(','),
ParameterStyle.SIMPLE: lambda x: x.split(','),
ParameterStyle.SPACE_DELIMITED: lambda x: x.split(' '),
ParameterStyle.PIPE_DELIMITED: lambda x: x.split('|'),
}
def __init__(
self, name, location, schema=None, required=False,
deprecated=False, allow_empty_value=False,
items=None, style=None, explode=None):
self.name = name
self.location = ParameterLocation(location)
self.schema = schema
self.required = (
True if self.location == ParameterLocation.PATH else required
)
self.deprecated = deprecated
self.allow_empty_value = (
allow_empty_value if self.location == ParameterLocation.QUERY
else False
)
self.items = items
self.style = ParameterStyle(style or self.default_style)
self.explode = self.default_explode if explode is None else explode
@property
def aslist(self):
return (
self.schema and
self.schema.type in [SchemaType.ARRAY, SchemaType.OBJECT]
)
@property
def default_style(self):
simple_locations = [ParameterLocation.PATH, ParameterLocation.HEADER]
return (
'simple' if self.location in simple_locations else "form"
)
@property
def default_explode(self):
return self.style == ParameterStyle.FORM
def get_dererializer(self):
return self.PARAMETER_STYLE_DESERIALIZERS[self.style]
def deserialize(self, value):
if not self.aslist or self.explode:
return value
deserializer = self.get_dererializer()
return deserializer(value)
def deserialise(self, value):
if self.deprecated:
warnings.warn(
"{0} parameter is deprecated".format(self.name),
DeprecationWarning,
)
if (self.location == ParameterLocation.QUERY and value == "" and
not self.allow_empty_value):
raise EmptyParameterValue(self.name)
try:
return self.deserialize(value)
except (ValueError, AttributeError) as exc:
raise InvalidParameterValue(self.name, exc)