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"""
Handled exceptions raised by REST framework.
In addition Django's built in 403 and 404 exceptions are handled.
(`django.http.Http404` and `django.core.exceptions.PermissionDenied`)
"""
from djangorestframework import status
class ParseError(Exception):
status_code = status.HTTP_400_BAD_REQUEST
default_detail = 'Malformed request.'
def __init__(self, detail=None):
self.detail = detail or self.default_detail
class PermissionDenied(Exception):
status_code = status.HTTP_403_FORBIDDEN
default_detail = 'You do not have permission to access this resource.'
def __init__(self, detail=None):
self.detail = detail or self.default_detail
class MethodNotAllowed(Exception):
status_code = status.HTTP_405_METHOD_NOT_ALLOWED
default_detail = "Method '%s' not allowed."
def __init__(self, method, detail=None):
self.detail = (detail or self.default_detail) % method
class UnsupportedMediaType(Exception):
status_code = status.HTTP_415_UNSUPPORTED_MEDIA_TYPE
default_detail = "Unsupported media type '%s' in request."
def __init__(self, media_type, detail=None):
self.detail = (detail or self.default_detail) % media_type
class Throttled(Exception):
status_code = status.HTTP_429_TOO_MANY_REQUESTS
default_detail = "Request was throttled. Expected available in %d seconds."
def __init__(self, wait, detail=None):
import math
self.detail = (detail or self.default_detail) % int(math.ceil(wait))
REST_FRAMEWORK_EXCEPTIONS = (
ParseError, PermissionDenied, MethodNotAllowed,
UnsupportedMediaType, Throttled
)
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