def test_set_rollback_for_transaction_in_managed_mode(self):
class MockTransaction(object):
called_rollback = False
called_leave_transaction_management = False
def is_managed(self):
return True
def is_dirty(self):
return True
def rollback(self):
self.called_rollback = True
def leave_transaction_management(self):
self.called_leave_transaction_management = True
dirty_mock_transaction = MockTransaction()
compat.transaction = dirty_mock_transaction
compat.set_rollback()
assert dirty_mock_transaction.called_rollback is True
assert dirty_mock_transaction.called_leave_transaction_management is True
clean_mock_transaction = MockTransaction()
clean_mock_transaction.is_dirty = lambda: False
compat.transaction = clean_mock_transaction
compat.set_rollback()
assert clean_mock_transaction.called_rollback is False
assert clean_mock_transaction.called_leave_transaction_management is True
def datal_exception_handler(exception, context):
# Call REST framework's default exception handler first,
# to get the standard error response.
response = exception_handler(exception, context)
# Now add the HTTP status code to the response.
if not response is None:
response.data['status'] = response.status_code
if not 'description' in response.data:
response.data['description'] = ''
if 'detail' in response.data:
response.data['description'] = response.data.pop('detail')
response.data['error'] = str(exception.__class__.__name__)
response.data['type'] = 'api-error'
elif isinstance(exception, DATALException):
set_rollback()
response = Response({}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
response.data['status'] = exception.status_code
response.data['description'] = exception.description % {}
response.data['error'] = str(exception.__class__.__name__)
response.data['type'] = exception.tipo
elif not settings.DEBUG:
logger = logging.getLogger(__name__)
trace = '\n'.join(traceback.format_exception(*(sys.exc_info())))
logger.error('[UnexpectedCatchError] %s. %s %s' %
(str(exception), repr(exception), trace))
set_rollback()
response = Response({}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
response.data['status'] = response.status_code
response.data['description'] = json.dumps(str(exception))
response.data['error'] = str(exception.__class__.__name__)
response.data['type'] = 'unexpected-error'
return response
def datal_exception_handler(exception, context):
# Call REST framework's default exception handler first,
# to get the standard error response.
response = exception_handler(exception, context)
# Now add the HTTP status code to the response.
if response is not None:
response.data['status'] = response.status_code
if not 'description' in response.data:
response.data['description'] = ''
if 'detail' in response.data:
response.data['description'] = response.data.pop('detail')
response.data['error'] = str(exception.__class__.__name__)
response.data['type'] = 'api-error'
elif isinstance(exception, DATALException):
set_rollback()
response = Response({}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
response.data['status'] = exception.status_code
response.data['description'] = exception.description % {}
response.data['error'] = str(exception.__class__.__name__)
response.data['type'] = exception.tipo
elif not settings.DEBUG:
logger = logging.getLogger(__name__)
trace = '\n'.join(traceback.format_exception(*(sys.exc_info())))
logger.error('[UnexpectedCatchError] %s. %s %s' % (
str(exception), repr(exception), trace))
set_rollback()
response = Response({}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
response.data['status'] = response.status_code
response.data['description'] = str(exception)
response.data['error'] = str(exception.__class__.__name__)
response.data['type'] = 'unexpected-error'
return response
def custom_exception_handler(exc, context):
response = rest_exception_handler(exc, context)
if isinstance(exc, DjangoValidationError):
data = {'detail': exc.messages}
set_rollback()
return Response(data, status=status.HTTP_400_BAD_REQUEST)
return response
def test_set_rollback_for_transaction_in_managed_mode(self):
class MockTransaction(object):
called_rollback = False
called_leave_transaction_management = False
def is_managed(self):
return True
def is_dirty(self):
return True
def rollback(self):
self.called_rollback = True
def leave_transaction_management(self):
self.called_leave_transaction_management = True
dirty_mock_transaction = MockTransaction()
compat.transaction = dirty_mock_transaction
compat.set_rollback()
assert dirty_mock_transaction.called_rollback is True
assert dirty_mock_transaction.called_leave_transaction_management is True
clean_mock_transaction = MockTransaction()
clean_mock_transaction.is_dirty = lambda: False
compat.transaction = clean_mock_transaction
compat.set_rollback()
assert clean_mock_transaction.called_rollback is False
assert clean_mock_transaction.called_leave_transaction_management is True
def custom_handler(exc, context):
"""
Handle exceptions that are NOT `rest_framework.exceptions.APIException`-based exceptions
"""
# Call REST framework's default exception handler first,
# to get the standard error response.
response = exception_handler(exc, context)
request = context.get('request', None)
view = context.get('view', None)
if not response:
q('CUSTOM EXCEPTION!', exc, request.data)
# Get exception info
exc_type, exc_value, exc_trace = sys.exc_info()
q(exc_type, exc_value, exc_trace)
# Customize exceptions that translate to HTTP-4XX status-codes
if isinstance(exc, core_exceptions.ObjectDoesNotExist):
msg = str(exc) # TODO! Translate this!
data = {'detail': six.text_type(msg)}
status_code = status.HTTP_404_NOT_FOUND
elif isinstance(exc, AssertionError):
if isinstance(exc.message, basestring):
data = {'detail': six.text_type(exc.message)}
else:
data = exc.message
status_code = status.HTTP_400_BAD_REQUEST
else:
q('UNHANDLED CUSTOM EXCEPTION!')
# Unhandled exception; print and then just wrap to make render properly
traceback.print_exception(exc_type, exc_value, exc_trace)
try:
msg = str(exc) # TODO! Translate this!
# http://stackoverflow.com/a/696095/1008905
raise WrappedException, (msg, exc_type, exc_value), exc_trace
except Exception, exc:
response = exception_handler(exc, context)
return response
# Add some additional information to the response-data
if view:
data['view'] = view.__class__.__name__
if context.get('kwargs', None):
data['kwargs'] = context['kwargs']
if request.data:
data['request'] = request.data
if not status_code:
status_code = exc.status_code if exc.status_code else 500
set_rollback()
return Response(data, status=status_code)
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
detail = exc.detail
field_name = ''
while isinstance(detail, dict):
field_name = next(iter(detail.keys()))
detail = detail[field_name]
if isinstance(detail, list):
detail = detail[0]
err_data = {
'code': exc.code if hasattr(exc, 'code') else exc.status_code,
'msg': exc.msg if hasattr(exc, 'msg') else detail,
'field_name': field_name
}
set_rollback()
return Response(err_data, status=200, headers=headers)
elif isinstance(exc, Http404):
set_rollback()
err_data = {'code': 404, 'msg': exc.__repr__()}
return Response(err_data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
err_data = {'code': 403, 'msg': exc.__repr__()}
set_rollback()
return Response(err_data, status=status.HTTP_403_FORBIDDEN)
elif isinstance(exc, DatabaseError):
logger.error(exc)
set_rollback()
# 数据库异常
err_data = {'code': 500, 'msg': exc.__repr__()}
response = Response(err_data,
status=status.HTTP_507_INSUFFICIENT_STORAGE)
return response
elif isinstance(exc, RedisError):
set_rollback()
# 数据库异常
err_data = {'code': 500, 'msg': exc.__repr__()}
response = Response(err_data,
status=status.HTTP_507_INSUFFICIENT_STORAGE)
return response
def custom_exception_handler(exc, context):
if isinstance(exc, (NotAuthenticated, AuthenticationFailed)):
data = {
"code": error_codes.Unauthorized.code,
"data": {"login_url": {"full": settings.LOGIN_FULL, "simple": settings.LOGIN_SIMPLE}},
"message": error_codes.Unauthorized.message,
"request_id": local.request_id,
}
return Response(data, status=error_codes.Unauthorized.status_code)
elif isinstance(exc, (ValidationError, ParseError)):
detail = exc.detail
if "non_field_errors" in exc.detail:
message = detail["non_field_errors"]
else:
message = detail
data = {"code": 400, "message": message, "data": None, "request_id": local.request_id}
set_rollback()
return Response(data, status=200, headers={})
elif isinstance(exc, APIError):
# 更改返回的状态为为自定义错误类型的状态码
data = {"code": exc.code, "message": exc.message, "data": None, "request_id": local.request_id}
set_rollback()
return Response(data)
elif isinstance(exc, (MethodNotAllowed, PermissionDenied)):
data = {"code": 400, "message": exc.detail, "data": None, "request_id": local.request_id}
set_rollback()
return Response(data, status=200)
elif isinstance(exc, Http404):
data = {"code": 404, "message": _("资源未找到"), "data": None}
set_rollback()
return Response(data, status=200)
elif isinstance(exc, backend_exceptions.APIError):
data = {"code": exc.code, "message": "%s" % exc, "data": exc.data, "request_id": local.request_id}
set_rollback()
return Response(data, status=exc.status_code)
# Call REST framework's default exception handler to get the standard error response.
response = exception_handler(exc, context)
# Use a default error code
if response is not None:
response.data.update(code="ERROR")
# catch all exception, if in prod/stag mode
if settings.IS_COMMON_EXCEPTION_MSG and not settings.DEBUG and not response:
logger.exception("restful api unhandle exception")
data = {
"code": 500,
"message": _("数据请求失败，请稍后再试{}").format(settings.COMMON_EXCEPTION_MSG),
"data": None,
"request_id": local.request_id,
}
return Response(data)
return response
def exception_response(data, status_code, headers, django=False):
if django:
res = JsonResponse(data, status=status_code)
set_django_response_headers(res, headers)
else:
res = Response(data, status=status_code, headers=headers)
res.is_final = True
set_rollback()
return res
def exception_handler(exc, content):
data = {
'result': False,
'data': None
}
if isinstance(exc, (NotAuthenticated, AuthenticationFailed)):
data = {
'result': False,
'code': ResponseCodeStatus.UNAUTHORIZED,
'detail': u'用户未登录或登录态失效，请使用登录链接重新登录',
'login_url': ''
}
return Response(data, status=status.HTTP_403_FORBIDDEN)
if isinstance(exc, PermissionDenied) or isinstance(exc, RestPermissionDenied):
message = exc.detail if hasattr(exc, 'detail') else u'该用户没有该权限功能'
data = {
'result': False,
'code': ResponseCodeStatus.PERMISSION_DENIED,
'message': message
}
return Response(data, status=status.HTTP_403_FORBIDDEN)
else:
if isinstance(exc, ValidationError):
data.update({
'code': ResponseCodeStatus.VALIDATE_ERROR,
'message': exc.detail
})
elif isinstance(exc, MethodNotAllowed):
data.update({
'code': ResponseCodeStatus.METHOD_NOT_ALLOWED,
'message': exc.detail,
})
elif isinstance(exc, Http404):
# 更改返回的状态为为自定义错误类型的状态码
data.update({
'code': ResponseCodeStatus.OBJECT_NOT_EXIST,
'message': exc.message,
})
else:
# 调试模式
logger.error(traceback.format_exc())
print traceback.format_exc()
# if settings.RUN_MODE != 'PRODUCT':
# raise exc
# 正式环境，屏蔽500
data.update({
'code': ResponseCodeStatus.SERVER_500_ERROR,
'message': exc.message,
})
set_rollback()
return Response(data, status=status.HTTP_200_OK)
def YB_exception_handler(exc, context):
""" Funcion de tratamiento de error en peticiones por defecto
El contecto incluye los siguientes:
'view': self,
'args': getattr(self, 'args', ()),
'kwargs': getattr(self, 'kwargs', {}),
'request': getattr(self, 'request', None)
"""
try:
milog.info("Excepcion capturada de alto nivel: %s",exc.__str__())
if settings.DEBUG:
milog.exception(exc)
except:
pass
"""
Se capturaran todas y se devolvera un mensaje 400 si no mas especifico
El mensaje de vuelta tendra la estructura:
tipo:
1-Error Arquitectura/API REST
2-Error de aplicacion
3-Validacion
4-Error excepcion capturada
msg: Mensaje por defecto
data:Otros datos relevantes
"""
miresp={}
code=status.HTTP_400_BAD_REQUEST
#tratamiento de errores de validacion
if isinstance(exc,ValidationError):
miresp['tipo']=3
miresp['msg']=[_('Error en los datos recibidos. Revise mensajes adicionales.')]
miresp['data']=exc.detail
else:
#Comportamiento por defecto
response = exception_handler(exc, context)
if not(response is None):
#Pasamos a nuestro estandar
miresp['tipo']=1
miresp['msg']=[response.data.get('detail',None)]
response.data=miresp
return response
else:
#Tratamiento de excepciones propias y no controladas por API
if isinstance(exc,excepcionAplicacion):
if isinstance(exc,excepcionAplicacionRollBack):
set_rollback()
miresp['tipo']=2
miresp['msg']=[force_text(exc.__str__())]
else:
set_rollback()
miresp['tipo']=4
miresp['msg']=[force_text(exc.__str__())]
return Response(data=miresp,status=code)
def my_exception_handler(exc, context):
if (
isinstance(exc, exceptions.APIException) and
isinstance(exc.detail, (list, dict))
):
detail = " - ".join(
["{}: {}".format(k, v[0]) for k, v in exc.detail.items()])
response = {"error": detail}
set_rollback()
return Response(response, status=exc.status_code)
else:
exception_handler(exc, context)
def custom_exception_handler(exc, context):
# Call REST framework's default exception handler first,
# to get the standard error response.
response = exception_handler(exc, context)
# No response means DRF couldn't handle it
# Output a generic 500 in a JSON format
if response is None:
logging.exception('Uncaught Exception', exc_info=exc)
set_rollback()
return Response({'detail': 'Server Error'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
return response
def get_exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, dict):
if exc.detail.get('card'):
data = {'detail': '卡号已存在'}
else:
data = [v[0] for k, v in exc.detail.items()]
data = {'detail': ','.join(data)}
print data
elif isinstance(exc.detail, list):
data = {'detail': ''.join(exc.detail)}
else:
data = {'detail': exc.detail}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
# elif isinstance(exc, Http404):
# msg = _('Not found.')
# data = {'msgs': six.text_type(msg)}
#
# set_rollback()
# return Response(data, status=status.HTTP_404_NOT_FOUND)
# elif isinstance(exc, PermissionDenied):
# msg = _('Permission denied.')
# data = {'msgs': six.text_type(msg)}
#
# set_rollback()
# return Response(data, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
return None
def exception_handler(exc, context):
if isinstance(exc, exceptions.ValidationError):
set_rollback()
return error(exc.status_code, exc.detail)
elif isinstance(exc, Http404):
msg = 'Not found.'
set_rollback()
return error(404, msg)
elif isinstance(exc, PermissionDenied):
msg = 'Permission denied.'
set_rollback()
return error(403, msg)
elif isinstance(exc, exceptions.APIException):
set_rollback()
return error(exc.status_code, exc.detail)
request = context.get('request')
logger.error('Internal Server Error: %s', request.path,
exc_info=sys.exc_info(),
extra={
'status_code': 500,
'request': request
}
)
return error(500, exc.message)
def custom_exception_handler(exc, context):
"""Handle select errors not handled by DRF's default exception handler."""
response = exception_handler(exc, context)
if response is None:
if isinstance(exc, ProtectedError):
# provides handling of ProtectError from use of models
# ForeignKey on_delete=PROTECT argument.
msg = _('Cannot delete protected objects while '
'related objects still exist')
data = {'detail': six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_400_BAD_REQUEST)
return response
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
request = context.get('request')
view_class = context.get('view').__class__.__name__
if not isinstance(exc, NotAuthenticated) and not view_class == "ImageViewSet":
logger.exception(exc, extra={'request': request})
if isinstance(exc, APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
# TODO: Investigate
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
data = {'error': True, 'detail': exc.detail, 'error_code': exc.default_code}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {'error': True, 'detail': six.text_type(msg), 'error_code': 'not_found'}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, ObjectDoesNotExist):
msg = _('Object Not found.')
data = {'error': True, 'detail': six.text_type(msg), 'error_code': 'not_found'}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {'error': True, 'detail': six.text_type(msg), 'error_code': 'permission_denied'}
message = six.text_type(exc)
if message:
data['detail'] = message
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
return None
def custom_rest_exception_handler(exc, context):
""" Custom rest api exception handler """
from rest_framework import exceptions
from rest_framework.compat import set_rollback
from rest_framework.views import exception_handler
response = exception_handler(exc, context)
if isinstance(exc, IntegrityError) and ('already exists' in str(exc) or 'must make a unique set' in str(exc)):
data = {'detail': 'duplicate unique key'}
set_rollback()
return Response(data, status=status.HTTP_409_CONFLICT)
if isinstance(exc, exceptions.NotAuthenticated):
response.status_code = status.HTTP_401_UNAUTHORIZED
if isinstance(exc, exceptions.ValidationError) and (
'already exists' in str(exc) or 'must make a unique set' in str(exc)):
response.status_code = status.HTTP_409_CONFLICT
return response
def custom_exception_handler(exc, context):
# Call REST framework's default exception handler first,
# to get the standard error response.
response = exception_handler(exc, context)
# No response means DRF couldn't handle it
# Output a generic 500 in a JSON format
if response is None:
logging.exception('Uncaught Exception', exc_info=exc)
set_rollback()
return Response({'detail': 'Server Error'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
# log a few different types of exception instead of use APIException
if isinstance(exc, (DeisException, ServiceUnavailable, HealthcheckException)):
logging.exception(exc.__cause__, exc_info=exc)
return response
def G3WExceptionHandler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
data = G3WAPIResults()
data.result = False
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc, exceptions.ValidationError):
data.error = {
'code': 'validation',
'message': _('Data are not correct or insufficent!')
}
else:
data.error = {
'code': 'servererror',
'message': _('A error server is occured!')
}
data.results['error']['data'] = exc.detail
set_rollback()
return Response(data.results, status=exc.status_code, headers=headers)
set_rollback()
return Response(data.results, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found')
data.error = six.text_type(msg)
set_rollback()
return Response(data.results, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied')
data.error = six.text_type(msg)
set_rollback()
return Response(data.results, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
return None
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
request = context.get('request')
logger.exception(exc, extra={'request': request})
if isinstance(exc, APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
# TODO: Investigate
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
data = {'error': True, 'detail': exc.detail, 'error_code': exc.default_code}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {'error': True, 'detail': six.text_type(msg), 'error_code': 'not_found'}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, ObjectDoesNotExist):
msg = _('Object Not found.')
data = {'error': True, 'detail': six.text_type(msg), 'error_code': 'not_found'}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {'error': True, 'detail': six.text_type(msg), 'error_code': 'permission_denied'}
message = six.text_type(exc)
if message:
data['detail'] = message
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
return None
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
request_url = context['request'].build_absolute_uri()
if isinstance(exc, APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
data = {
'msg': exc.detail,
'code': exc.code,
'error_code': exc.error_code,
'request_url': request_url
}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {
'msg': six.text_type(msg),
'error_code': 40000,
'request_url': request_url
}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
Adds support the DRF default to also handle django.core.exceptions.ValidationError
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
response = original_exception_handler(exc, context)
if response:
return response
elif isinstance(exc, DjangoValidationError):
data = {'messages': exc.messages}
set_rollback()
return Response(data, status=status.HTTP_400_BAD_REQUEST)
return None
def custom_rest_exception_handler(exc, context):
''' Custom rest api exception handler '''
from rest_framework import exceptions
from rest_framework.compat import set_rollback
from rest_framework.views import exception_handler
response = exception_handler(exc, context)
if isinstance(
exc, IntegrityError) and ('already exists' in str(exc)
or 'must make a unique set' in str(exc)):
data = {'detail': 'duplicate unique key'}
set_rollback()
return Response(data, status=status.HTTP_409_CONFLICT)
if isinstance(exc, exceptions.NotAuthenticated):
response.status_code = status.HTTP_401_UNAUTHORIZED
if isinstance(exc, exceptions.ValidationError) and (
'already exists' in str(exc)
or 'must make a unique set' in str(exc)):
response.status_code = status.HTTP_409_CONFLICT
return response
def full_exception_handler(exc, context):
"""
Transform dict-like error-messages to flat list.
"""
if isinstance(exc, exceptions.APIException):
set_rollback()
data = exc.get_full_details()
errors = data
if isinstance(exc.detail, dict):
errors = []
for field_name, values in data.items():
for value in values.copy():
if field_name != 'non_field_errors':
value['field'] = field_name
errors.append(value)
return Response(errors, status=exc.status_code)
return None
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
errors = exc.detail
if isinstance(exc.detail, list):
error_detail = exc.detail[0]
elif isinstance(exc.detail, dict):
# TODO 处理嵌套字典的错误,嵌套serializer中会出现此种情况，对于嵌套的报错，使用最里层的那个报错字符串
error_detail = exc.detail.copy().popitem()[1][0]
set_rollback()
else:
error_detail = exc.detail
errors = None
error_code = getattr(error_detail, 'code', 'invalid')
if isinstance(error_code, six.text_type):
error_code = 1001
set_rollback()
if error_code < 1000:
# drf内部错误有时通过error_detail中获取的code和实际http应该返回的code不一致，所以如果不是验证错误
# 使用exc的status_code作为返回码
error_code = exc.status_code
return {'code': error_code, 'detail': error_detail, 'errors': errors}
return {'code': -1, 'detail': 'unknown'}
def custom_exception_handler(exc, context):
# give more context on the error since DRF masks it as Not Found
if isinstance(exc, Http404):
set_rollback()
return Response(str(exc), status=status.HTTP_404_NOT_FOUND)
# Call REST framework's default exception handler after specific 404 handling,
# to get the standard error response.
response = exception_handler(exc, context)
# No response means DRF couldn't handle it
# Output a generic 500 in a JSON format
if response is None:
logging.exception('Uncaught Exception', exc_info=exc)
set_rollback()
return Response({'detail': 'Server Error'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
# log a few different types of exception instead of using APIException
if isinstance(exc, (DeisException, ServiceUnavailable, HealthcheckException)):
logging.exception(exc.__cause__, exc_info=exc)
return response
def custom_exception_handler(exc, context):
if isinstance(exc, Error):
set_rollback()
logger.error(exc)
return ErrorResponse(exc.err_code,
exc.err_result,
exc.message,
status=exc.status_code)
if isinstance(exc, KeyError):
data = 'key error.'
set_rollback()
logger.error(exc)
return ErrorResponse(2001,
data,
u'KeyError',
status=status.HTTP_200_OK)
if isinstance(exc, ParseError):
data = exc.detail
set_rollback()
logger.error(exc)
return ErrorResponse(2001,
data,
u'parse error',
status=status.HTTP_200_OK)
if isinstance(exc, ValidationError):
data = exc.detail
if data.has_key('email_title'):
return ErrorResponse(2104,
data,
u'email_title can not be null',
status=status.HTTP_200_OK)
set_rollback()
logger.error(exc)
return ErrorResponse(2001,
data,
u'validation error',
status=status.HTTP_200_OK)
if isinstance(exc, IntegrityError):
data = str(exc)
return ErrorResponse(3101,
data,
u'duplicate error',
status=status.HTTP_200_OK)
def custom_exception_handler(exc, context):
"""
Custom django rest framework exception handler that includes 'status_code' field in the
responses.
"""
# Call REST framework's default exception handler first
response = exception_handler(exc, context)
# Catch unexpected exceptions
if response is None:
if isinstance(exc, Exception):
print('\n\nUnhandled Exception\n')
print(exc)
print('\n')
data = {'detail': 'A server error occurred.'}
set_rollback()
response = Response(data,
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
# Now add the HTTP status code to the response.
if response is not None:
response.data['status_code'] = response.status_code
return response
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, "auth_header", None):
headers["WWW-Authenticate"] = exc.auth_header
if getattr(exc, "wait", None):
headers["Retry-After"] = "%d" % exc.wait
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
data = {"detail": exc.detail}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _("Not found.")
data = {"detail": six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _("Permission denied.")
data = {"detail": six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
elif isinstance(exc, DjangoValidationError):
msg = _("Validation error.")
data = {"detail": exc.messages}
set_rollback()
return Response(data, status=status.HTTP_400_BAD_REQUEST)
# Note: Unhandled exceptions will raise a 500 error.
return None
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
print(exc)
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
# data = {'detail': exc.detail}
data = exc.detail
code = -100
if isinstance(exc,AuthenticationFailed):
code = 401
set_rollback()
return DefaultJsonResponse(message=data,code=code, status=200, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {'detail': six.text_type(msg)}
set_rollback()
return DefaultJsonResponse(message=data, code=-100,status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {'detail': six.text_type(msg)}
set_rollback()
return DefaultJsonResponse(message=msg, status=status.HTTP_403_FORBIDDEN)
elif isinstance(exc,ConditionDenied):
print(exc.detail)
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
data = {'detail': exc.detail}
print(type(exc))
print(data)
return DefaultJsonResponse(message=data.get('detail'), code=exc.code, status=status.HTTP_200_OK,)
elif isinstance(exc,PageInvalidate): # 客户端请求的页码超出
return DefaultJsonResponse(message=exc.detail, code=exc.code, status=status.HTTP_200_OK,)
elif isinstance(exc,VertifySmsNotMatchException):
return DefaultJsonResponse(message=exc.detail, code= appcodes.SMS_VERIFY_FAILED, status=status.HTTP_200_OK,)
elif isinstance(exc,AdminDenied):
return DefaultJsonResponse(message='MDZZ')
return None
def exception_handler(exc, context):
# Custom Error
if isinstance(exc, APIError):
set_rollback()
return APIResponse(code=exc.err_code, message=exc.message, data=None)
# Authentication
if isinstance(exc, exceptions.AuthenticationFailed):
return APIResponse(code=errors.TOKEN_EXPIRED,
message=exc.default_detail,
data={'detail': exc.detail},
status_code=exc.status_code)
# Throttled
if isinstance(exc, exceptions.Throttled):
return APIResponse(code=errors.THROTTLE_REACHED,
message=exc.default_detail,
data={'detail': exc.detail})
# Common
if isinstance(exc, exceptions.APIException):
# print(exc)
return APIResponse(code=errors.OTHER_ERROR,
message=exc.default_detail,
data={'detail': exc.detail})
def custom_exception_handler(exc, context):
# give more context on the error since DRF masks it as Not Found
if isinstance(exc, Http404):
set_rollback()
return Response(str(exc), status=status.HTTP_404_NOT_FOUND)
# Call REST framework's default exception handler after specific 404 handling,
# to get the standard error response.
response = exception_handler(exc, context)
# No response means DRF couldn't handle it
# Output a generic 500 in a JSON format
if response is None:
logging.exception('Uncaught Exception', exc_info=exc)
set_rollback()
return Response({'detail': 'Server Error'},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
# log a few different types of exception instead of using APIException
if isinstance(exc,
(DeisException, ServiceUnavailable, HealthcheckException)):
logging.exception(exc.__cause__, exc_info=exc)
return response
def exception_handler(exc, context):
if isinstance(exc, exceptions.ValidationError):
errors = []
message = "Validation failed."
for field, field_errors in exc.detail.items():
if field == "non_field_errors":
field = None
for error in field_errors:
if isinstance(error, ValidationErrorDetail):
message = error.message
error = {"error": error.error}
else:
error = {"error": error}
if field:
error["field"] = field
errors.append(error)
data = {"message": message, "errors": errors}
return Response(data, status=422)
if isinstance(exc, exceptions.APIException):
if isinstance(exc.detail, list):
errors = [{"error": e} for e in exc.detail]
data = {"message": "API exception occurred.", "errors": errors}
elif isinstance(exc.detail, dict):
message = exc.detail.get("message", "API exception occurred.")
errors = [{"error": e} for e in exc.detail.get("errors", [])]
data = {'message': message, "errors": errors}
else:
data = {'message': exc.detail, "errors": []}
set_rollback()
return Response(data, status=exc.status_code)
elif isinstance(exc, Http404):
data = {"message": "Not found.", "errors": [{"error": "not_found"}]}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
data = {
"message": "Permision denied.",
"errors": [{
"error": "permission_denied"
}]
}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
return None
def exception_handler(exc, context):
if isinstance(exc, exceptions.APIException):
set_rollback()
return error(exc.status_code, exc.detail)
elif isinstance(exc, Http404):
msg = 'Not found.'
set_rollback()
return error(404, msg)
elif isinstance(exc, PermissionDenied):
msg = 'Permission denied.'
set_rollback()
return error(403, msg)
return error(500, exc.message)
def exception_handler(exc, context):
"""
Logging exceptions.
"""
request = context.get('request')
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, (dict)):
data = exc.detail
elif isinstance(exc.detail, (list)):
data = {'detail': ', '.join(exc.detail)}
else:
data = {'detail': exc.detail}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {'detail': six.text_type(msg)}
set_rollback()
logger.exception(
"----------- API Exception 404: User: {}, data: {}, source: {}, full_path: {}"
.format(request.user, request._full_data,
request.META.get('HTTP_SOURCE'), request.get_full_path()))
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {'detail': six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
logger.exception(
"----------- API Exception: User: {}, data: {}, source: {}, full_path: {}"
.format(request.user, request._full_data,
request.META.get('HTTP_SOURCE'), request.get_full_path()))
return None
def custom_exception_handler(exc, context):
# Call REST framework's default exception handler first,
# to get the standard error response.
custom_error = CustomError()
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, (list, dict)):
if exc.detail is list:
for errors in exc.detail:
for key, item in errors.items():
custom_error.add(key, item)
else:
for key, item in exc.detail.items():
custom_error.add(key, item)
else:
custom_error.add(Common.REST_FRAMEWORK['NON_FIELD_ERRORS_KEY'],
[exc.detail])
set_rollback()
return Response(custom_error.get(),
status=exc.status_code,
headers=headers)
elif isinstance(exc, Http404):
msg = 'Не найден'
custom_error.add(Common.REST_FRAMEWORK['NON_FIELD_ERRORS_KEY'],
[six.text_type(msg)])
set_rollback()
return Response(custom_error.get(), status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = 'Доступ запрещен'
custom_error.add(Common.REST_FRAMEWORK['NON_FIELD_ERRORS_KEY'],
[six.text_type(msg)])
set_rollback()
return Response(custom_error.get(), status=status.HTTP_403_FORBIDDEN)
return custom_error.get()
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['X-Throttle-Wait-Seconds'] = '%d' % exc.wait
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
class_name = exc.__class__.__name__
class_module = exc.__class__.__module__
data = {
"_error_message": force_text(exc.detail),
"_error_type": "{0}.{1}".format(class_module, class_name)
}
print(data)
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {'_error_message': six.text_type(msg)}
set_rollback()
print(data)
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {'_error_message': six.text_type(msg)}
set_rollback()
print(data)
return Response(data, status=status.HTTP_403_FORBIDDEN)
return None
def simple_exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
Return 400 errors like this:
[
{"field":"non_field_errors",
"message":"User with this email already exist."},
{"field":"field1",
"message":"Someone other error."},
]
"""
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
data = convert_to_list(exc.detail, api_settings.NON_FIELD_ERRORS_KEY)
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {'detail': six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {'detail': six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
return None
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
data = {'detail': exc.detail}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {'detail': six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {'detail': six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
# throw django's error page if debug is True
if settings.DEBUG:
exception_reporter = debug.ExceptionReporter(context.get('request'), *sys.exc_info())
return HttpResponse(exception_reporter.get_traceback_html(), status=500)
return None
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
headers = None
if isinstance(exc, APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
message_code = exc.detail
status_code = exc.status_code
set_rollback()
elif isinstance(exc, Http404):
msg = _('Not found.')
message_code = six.text_type(msg)
status_code = status.HTTP_404_NOT_FOUND
set_rollback()
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
message_code = six.text_type(msg)
status_code = status.HTTP_403_FORBIDDEN
set_rollback()
else:
message_code = str(exc)
status_code = status.HTTP_500_INTERNAL_SERVER_ERROR
return harri_response({},
message_code=message_code,
status_code=status_code,
headers=headers)
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
exception_detail_key = api_settings.EXCEPTION_DETAIL_KEY
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
data = {exception_detail_key: exc.detail}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {exception_detail_key: six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {exception_detail_key: six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
return None
def exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
error_key = api_settings.EXCEPTION_HANDLER_ERROR_KEY
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, (list, dict)):
data = exc.detail
else:
data = {error_key: exc.detail}
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {error_key: six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {error_key: six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
return None
def pingo_exception_handler(exc, context):
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
data = {}
if isinstance(exc.detail, list):
data['detail'] = {
'error': exc.detail,
}
if isinstance(exc.detail, dict):
data['detail'] = exc.detail
if isinstance(exc, ScheduleConflictionError):
data['title'] = _('Schedule Confliction')
data['message'] = _('The schedule you want to set is conflicted to existed schedules.')
elif isinstance(exc, exceptions.AuthenticationFailed):
data['title'] = _('Authentication Failed')
data['message'] = exc.detail
elif isinstance(exc, exceptions.NotAuthenticated):
data['title'] = _('Not Authenticated')
data['message'] = _('User credential is required to perform this action.')
elif isinstance(exc, exceptions.PermissionDenied):
data['title'] = _('Permission Denied')
data['message'] = exc.detail
elif isinstance(exc, exceptions.ValidationError):
data['title'] = _('Validation Failed')
data['message'] = _('Provided data is failed to pass the validation.')
else:
data['title'] = _('Error')
data['message'] = _('Unknown error.')
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {
'title': _('Not Found'),
'message': _('Requested resource is not found.'),
}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {
'title': _('Permission Denied'),
'message': _('You have no permission to do so.'),
}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
if settings.DEBUG:
return None
# return Response(status=status.HTTP_500_INTERNAL_SERVER_ERROR)
def custom_exception_handler(exc, context):
"""
Returns the response that should be used for any given exception.
By default we handle the REST framework `APIException`, and also
Django's built-in `Http404` and `PermissionDenied` exceptions.
Any unhandled exceptions may return `None`, which will cause a 500 error
to be raised.
"""
if isinstance(exc, exceptions.APIException):
headers = {}
if getattr(exc, 'auth_header', None):
headers['WWW-Authenticate'] = exc.auth_header
if getattr(exc, 'wait', None):
headers['Retry-After'] = '%d' % exc.wait
if isinstance(exc.detail, (list, dict)):
# Concatenate all field and non_field errors for message:
message = ''
for key in exc.detail:
try:
if isinstance(exc.detail[key], str):
message += exc.detail[key] + ' '
else:
for error in exc.detail[key]:
# Don't include duplicates in universal error message
if error not in message:
message += error + ' '
except TypeError:
if key == 'non_field_errors':
message = exc.detail[key][0]
else:
message = _('Invalid request.')
if message.endswith(' '):
message = message[:-1] # remove last space
data = OrderedDict([('status', 'error'), ('message', message), ('data', exc.detail)])
else:
data = OrderedDict([('status', 'error'), ('message', exc.detail)])
set_rollback()
return Response(data, status=exc.status_code, headers=headers)
elif isinstance(exc, Http404):
msg = _('Not found.')
data = {'status': 'error', 'message': six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
msg = _('Permission denied.')
data = {'status': 'error', 'message': six.text_type(msg)}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
return None
def exception_handler(exc, context):
if isinstance(exc, exceptions.ValidationError):
errors = []
message = "Validation failed."
for field, field_errors in exc.detail.items():
if field == "non_field_errors":
field = None
for error in field_errors:
if isinstance(error, ValidationErrorDetail):
message = error.message
error = {"error": error.error}
else:
error = {"error": error}
if field:
error["field"] = field
errors.append(error)
data = {
"message": message,
"errors": errors
}
return Response(data, status=422)
if isinstance(exc, exceptions.APIException):
if isinstance(exc.detail, list):
errors = [{"error": e} for e in exc.detail]
data = {"message": "API exception occurred.", "errors": errors}
elif isinstance(exc.detail, dict):
message = exc.detail.get("message", "API exception occurred.")
errors = [{"error": e} for e in exc.detail.get("errors", [])]
data = {'message': message, "errors": errors}
else:
data = {'message': exc.detail, "errors":[]}
set_rollback()
return Response(data, status=exc.status_code)
elif isinstance(exc, Http404):
data = {
"message":"Not found.",
"errors":[
{"error":"not_found"}
]
}
set_rollback()
return Response(data, status=status.HTTP_404_NOT_FOUND)
elif isinstance(exc, PermissionDenied):
data = {
"message":"Permision denied.",
"errors":[
{"error":"permission_denied"}
]
}
set_rollback()
return Response(data, status=status.HTTP_403_FORBIDDEN)
# Note: Unhandled exceptions will raise a 500 error.
return None
