66 lines
2 KiB
Python
66 lines
2 KiB
Python
from enum import Enum
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from flask import url_for
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from werkzeug.exceptions import HTTPException
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class ApiErrorType(Enum):
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invalid_request = 'invalid_request'
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class ApiException(HTTPException):
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"""
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Represents an error in the application/problem+json format.
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See: https://tools.ietf.org/html/rfc7807
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- "type" (string) - A URI reference that identifies the
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problem type.
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- "title" (string) - A short, human-readable summary of the problem
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type. It SHOULD NOT change from occurrence to occurrence of the
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problem, except for purposes of localization
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- "status" (number) - The HTTP status code
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- "detail" (string) - A human-readable explanation specific to this
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occurrence of the problem.
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- "instance" (string) - A URI reference that identifies the specific
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occurrence of the problem. It may or may not yield further
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information if dereferenced.
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"""
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def __init__(self, error_type, status_code, error_description, payload=None):
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Exception.__init__(self)
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self.error_description = error_description
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self.code = status_code
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self.payload = payload
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self.error_type = error_type
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self.data = self.to_dict()
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super(ApiException, self).__init__(error_description, None)
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def to_dict(self):
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rv = dict(self.payload or ())
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if self.error_description is not None:
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rv['detail'] = self.error_description
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rv['error_message'] = self.error_description # TODO: deprecate
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rv['error_type'] = self.error_type.value # TODO: deprecate
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rv['title'] = self.error_type.value
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rv['type'] = url_for('api.error', error_type=self.error_type.value, _external=True)
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rv['status'] = self.code
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return rv
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class InvalidRequest(ApiException):
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def __init__(self, error_description, payload=None):
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ApiException.__init__(self, ApiErrorType.invalid_request, 400, error_description, payload)
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class InvalidResponse(ApiException):
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def __init__(self, error_description, payload=None):
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ApiException.__init__(self, ApiErrorType.invalid_response, 400, error_description, payload)
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