mirror of
https://github.com/correl/openapi-core.git
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116 lines
3.6 KiB
Python
116 lines
3.6 KiB
Python
"""OpenAPI core parameters models module"""
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import logging
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import warnings
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from openapi_core.schema.parameters.enums import (
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ParameterLocation, ParameterStyle,
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)
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from openapi_core.schema.parameters.exceptions import (
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MissingRequiredParameter, MissingParameter, InvalidParameterValue,
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EmptyParameterValue,
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)
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from openapi_core.schema.schemas.enums import SchemaType
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from openapi_core.schema.schemas.exceptions import InvalidSchemaValue
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log = logging.getLogger(__name__)
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class Parameter(object):
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"""Represents an OpenAPI operation Parameter."""
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PARAMETER_STYLE_DESERIALIZERS = {
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ParameterStyle.FORM: lambda x: x.split(','),
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ParameterStyle.SIMPLE: lambda x: x.split(','),
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ParameterStyle.SPACE_DELIMITED: lambda x: x.split(' '),
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ParameterStyle.PIPE_DELIMITED: lambda x: x.split('|'),
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}
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def __init__(
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self, name, location, schema=None, required=False,
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deprecated=False, allow_empty_value=False,
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items=None, style=None, explode=None):
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self.name = name
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self.location = ParameterLocation(location)
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self.schema = schema
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self.required = (
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True if self.location == ParameterLocation.PATH else required
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)
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self.deprecated = deprecated
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self.allow_empty_value = (
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allow_empty_value if self.location == ParameterLocation.QUERY
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else False
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)
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self.items = items
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self.style = ParameterStyle(style or self.default_style)
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self.explode = self.default_explode if explode is None else explode
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@property
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def aslist(self):
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return (
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self.schema and
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self.schema.type in [SchemaType.ARRAY, SchemaType.OBJECT]
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)
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@property
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def default_style(self):
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simple_locations = [ParameterLocation.PATH, ParameterLocation.HEADER]
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return (
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'simple' if self.location in simple_locations else "form"
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)
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@property
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def default_explode(self):
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return self.style == ParameterStyle.FORM
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def get_dererializer(self):
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return self.PARAMETER_STYLE_DESERIALIZERS[self.style]
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def deserialize(self, value):
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if not self.aslist or self.explode:
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return value
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deserializer = self.get_dererializer()
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return deserializer(value)
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def get_value(self, request):
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location = request.parameters[self.location.value]
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try:
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raw = location[self.name]
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except KeyError:
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if self.required:
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raise MissingRequiredParameter(
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"Missing required `{0}` parameter".format(self.name))
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if not self.schema or self.schema.default is None:
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raise MissingParameter(
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"Missing `{0}` parameter".format(self.name))
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raw = self.schema.default
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if self.aslist and self.explode:
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return location.getlist(self.name)
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return raw
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def unmarshal(self, value):
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if self.deprecated:
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warnings.warn(
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"{0} parameter is deprecated".format(self.name),
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DeprecationWarning,
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)
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if (self.location == ParameterLocation.QUERY and value == "" and
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not self.allow_empty_value):
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raise EmptyParameterValue(
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"Value of {0} parameter cannot be empty".format(self.name))
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if not self.schema:
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return value
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deserialized = self.deserialize(value)
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try:
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return self.schema.unmarshal(deserialized)
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except InvalidSchemaValue as exc:
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raise InvalidParameterValue(str(exc))
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