def handle_error(self, e):
'''
Error handler for the API transforms a raised exception into a Flask response,
with the appropriate HTTP status code and body.
:param Exception e: the raised Exception object
'''
got_request_exception.send(current_app._get_current_object(), exception=e)
headers = Headers()
if e.__class__ in self.error_handlers:
handler = self.error_handlers[e.__class__]
result = handler(e)
default_data, code, headers = unpack(result, 500)
elif isinstance(e, HTTPException):
code = e.code
default_data = {
'message': getattr(e, 'description', HTTP_STATUS_CODES.get(code, ''))
}
headers = e.get_response().headers
elif self._default_error_handler:
result = self._default_error_handler(e)
default_data, code, headers = unpack(result, 500)
else:
code = 500
default_data = {
'message': HTTP_STATUS_CODES.get(code, str(e)),
}
default_data['message'] = default_data.get('message', str(e))
data = getattr(e, 'data', default_data)
fallback_mediatype = None
if code >= 500:
exc_info = sys.exc_info()
if exc_info[1] is None:
exc_info = None
current_app.log_exception(exc_info)
elif code == 404 and current_app.config.get("ERROR_404_HELP", True):
data['message'] = self._help_on_404(data.get('message', None))
elif code == 406 and self.default_mediatype is None:
# if we are handling NotAcceptable (406), make sure that
# make_response uses a representation we support as the
# default mediatype (so that make_response doesn't throw
# another NotAcceptable error).
supported_mediatypes = list(self.representations.keys())
fallback_mediatype = supported_mediatypes[0] if supported_mediatypes else "text/plain"
# Remove blacklisted headers
for header in HEADERS_BLACKLIST:
headers.pop(header, None)
resp = self.make_response(data, code, headers, fallback_mediatype=fallback_mediatype)
if code == 401:
resp = self.unauthorized(resp)
return resp
def error_response(status_code, message=None):
resbody = {'error': HTTP_STATUS_CODES.get(status_code, 'Unknown error')}
if message:
resbody['message'] = message
response = jsonify(resbody)
response.status_code = status_code
return response
def error_response(status_code, message=None):
payload = {'error': HTTP_STATUS_CODES.get(status_code, 'Unknown error')}
if message:
payload['message'] = message
response = jsonify(payload)
response.status_code = status_code
return response
def abort_error(code, message=None, **kwargs):
if message is None:
message = HTTP_STATUS_CODES.get(code, '')
response = jsonify(code=code, msg=message, data={}, **kwargs)
response.status_code = code
return response
def error_response(status_code, message=None):
payload = {'error': HTTP_STATUS_CODES.get(status_code, 'Unknown error')}
if message:
payload['message'] = message
response = jsonify(payload)
response.status_code = status_code
return response
def get_status_msg(status_code):
"""将status code转换为status message
200 => 'OK'
400 => 'Bad Request'
500 => 'Internal Server Error'
"""
return HTTP_STATUS_CODES.get(status_code, 'Unknown Error')
def make_json_response(message, status_code=200, status=None):
"""Convenience function to create standard JSON response."""
if status is None:
status = HTTP_STATUS_CODES.get(status_code, '')
response = jsonify(message=message, statusCode=status_code, status=status)
response.status_code = status_code
return response
def handle_http_error(e):
response = {
'meta': meta(e.code, HTTP_STATUS_CODES.get(e.code)),
}
return jsonify(response), e.code
def error_response(status_code, message=None):
answer = {'error': HTTP_STATUS_CODES.get(status_code, 'Error')}
if message:
answer['message'] = message
response = jsonify(answer)
response.status_code = status_code
return response
def abort(ex, *, json=None, query=None):
from flask import abort, make_response
from werkzeug.http import HTTP_STATUS_CODES
from werkzeug.exceptions import default_exceptions
json = json or {}
query = query or {}
if isinstance(ex, Response):
try:
if ("message" in ex.json() and len(json) == 0
and ex.json()["message"] is not None
and ex.json()["message"] != ""):
json = ex.json()["messsage"]
except JSONDecodeError:
pass
ex = default_exceptions[ex.status_code]
payload = dict(
code=ex.code,
message=ex.description,
status=HTTP_STATUS_CODES.get(ex.code, "Unknown Error"),
)
if len(json) > 0:
payload.setdefault("errors", {})["json"] = json
if len(query) > 0:
payload.setdefault("errors", {})["query"] = query
abort(make_response(payload, ex.code))
def http_status_message(code: int) -> str:
"""Maps an HTTP status code to the textual status
:param code:
"""
return HTTP_STATUS_CODES.get(code, "")
def error_response(status_code, message=None):
payload = {"error": HTTP_STATUS_CODES.get(status_code, "Unknown error")}
if message:
payload["message"] = message
response = jsonify(payload)
response.status_code = status_code
return response
def get_reason_phrase(status_code: int) -> str:
"""A helper function to get the reason phrase of the given status code.
Arguments:
status_code: A standard HTTP status code.
"""
return HTTP_STATUS_CODES.get(status_code, 'Unknown error')
def error_response(status_code, message=None):
"""
Function to send a custom error response in case an API is used
The response is composed of a status code and optionaly a message
Those two data are input ones
:param status_code: the status code that will be returned
:type status_code: int
:param message: the error message that will be returned
:type message: None | str
:return: the error response
:rtype: flask.wrappers.Response
"""
payload = {"error": HTTP_STATUS_CODES.get(status_code, "Unknown error")}
if message:
payload["message"] = message
response = jsonify(payload)
response.status_code = status_code
return response
def get_status_msg(status_code):
"""将status code转换为status message
200 => 'OK'
400 => 'Bad Request'
500 => 'Internal Server Error'
"""
return HTTP_STATUS_CODES.get(status_code, 'Unknown Error')
def error_response(status_code, message=None):
response = {
"code": status_code,
"msg": HTTP_STATUS_CODES.get(status_code),
"data": {}
}
return jsonify(response)
def error(self, status_code, request, message=None):
"""Handle error response.
:param int status_code:
:param request:
:return:
"""
status_code_text = HTTP_STATUS_CODES.get(status_code, 'http error')
status_error_tag = status_code_text.lower().replace(' ', '_')
custom_response_map = {
404:
self.make_error_response(
status_error_tag,
'The requested URL {} was not found on this service.'.format(
request.path)),
400:
self.make_error_response(status_error_tag, message),
405:
self.make_error_response(
status_error_tag,
'The requested URL {} was not allowed HTTP method {}.'.format(
request.path, request.method)),
}
return self._raw_response(
status_code,
custom_response_map.get(
status_code,
self.make_error_response(status_error_tag, message
or status_code_text)))
def bad_request(message):
payload = {'error': HTTP_STATUS_CODES.get(400, 'Unknown error')}
if message:
payload['message'] = message
response = jsonify(payload)
response.status_code = 400
return response
def api_abort(code, message=None, **kwargs):
if message is None:
message = HTTP_STATUS_CODES.get(code, '')
response = jsonify(code=code, message=message, **kwargs)
response.status_code = code
return response
def api_message(http_code, code=None, message=None, data=None, **kwargs):
if message is None:
message = HTTP_STATUS_CODES.get(http_code, '')
if data is None:
response = dict(code=code, message=message, **kwargs)
else:
response = dict(code=code, message=message, data=data, **kwargs)
return response, http_code
def error_response(status_code, message=None):
#dictionary that provides a short descriptive name for each HTTP status code
payload = {'error': HTTP_STATUS_CODES.get(status_code, 'Unknown error')}
if message:
payload['message'] = message
response = jsonify(payload)
response.status_code = status_code
return response
def error_response(status_code, message=None):
payload = {'error': HTTP_STATUS_CODES.get(status_code, 'Unknown error')}
if message:
payload['message'] = message
response = jsonify(payload)
response.status_code = status_code
response.headers.add('Access-Control-Allow-Origin', '*')
return response
def error_response(error):
payload = {'error': HTTP_STATUS_CODES.get(error.status_code,
'Unknown error')}
if error.description:
payload['message'] = error.description
response = jsonify(payload)
response.status_code = error.status_code
return response
def success_response(self):
payload = {
'message': HTTP_STATUS_CODES.get(self.status_code),
'data': self.data
}
response = jsonify(payload)
response.status_code = self.status_code
return response
def error_response(status_code: int,
messages: Union[str, List, Dict] = None) -> Response:
error_status = HTTP_STATUS_CODES.get(status_code, "Unknown error")
response = jsonify({"success": False, "errors": messages or error_status})
response.status_code = status_code
secure_headers.flask(response)
return response
def error_response(status_code, message=None):
"""основа для создания ответа об ошибке"""
payload = {'error': HTTP_STATUS_CODES.get(status_code, 'Unknown error')}
if message:
payload['message'] = message
response = jsonify(payload)
response.status_code = status_code
return response
def status(self):
"""Returns the HTTP status line for the error response
:return: The HTTP status line for the error response
:rtype: str
"""
return str(self.status_code) + ' ' + HTTP_STATUS_CODES.get(
self.status_code, 'Unknown Error')
def error_response(status_code, message=None):
"""Construct an API error response."""
response = jsonify({
"error": HTTP_STATUS_CODES.get(status_code, "Unkown Error"),
"message": message
})
response.status_code = status_code
return response
def handle_error(self, environ, ue):
if ue.status_code == 404:
return self._not_found_response(environ, ue.url)
else:
status = str(ue.status_code) + ' ' + HTTP_STATUS_CODES.get(ue.status_code, 'Unknown Error')
return self._error_response(environ, ue.url, ue.msg,
status=status)
def error_response(status_code, message=None):
"""Return a JSON object of the HTTP status code and optional message"""
payload = {'error': HTTP_STATUS_CODES.get(status_code, 'Unknown error')}
if message:
payload['message'] = message
response = jsonify(payload)
response.status_code = status_code
return response
def get_body(self):
return (u'<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">\n'
u'<title>%(code)s %(name)s</title>\n'
u'<h1>%(name)s</h1>\n') % {
'code': self.status_code,
'name': HTTP_STATUS_CODES.get(self.status_code,
'Unknown Error')
}
def error_response(status_code, message=None):
payload = {"error": HTTP_STATUS_CODES.get(status_code, 'Unknown error')}
if message:
payload["message"] = message
app.logger.error("Error: " + message)
response = jsonify(payload)
response.status_code = status_code
return response
def error_response(status_code: int, message: str = None) -> Response:
error_dict: Dict[str, str] = dict()
error_dict['error'] = HTTP_STATUS_CODES.get(status_code, 'Unknown error')
if message:
error_dict['message'] = message
response: Response = jsonify(error_dict)
response.status_code = status_code
return response
def as_dict(self):
if self.args:
message = str(self)
else:
message = HTTP_STATUS_CODES.get(self.status_code, '')
return {
'status': self.status_code,
'message': message
}
def abort(self, status, error=None, encoder=True):
(self.log.exception if self.app.debug and exc_info()[0] else self.log.error)(
'%r %s %s >> %s', status, request.method, request.path,
error or HTTP_STATUS_CODES.get(status, 'Unknown Error'))
if error:
return abort(status, description=error, response = self.encoders[encoder].make_response(
dict(status=status, error=error), status=status))
else:
return abort(status)
def error_response(status_code, description): # pragma: no cover
response = make_response(
json.dumps({
"message": HTTP_STATUS_CODES.get(status_code),
"status": status_code,
"description": description
})
)
response.mimetype = 'application/json'
response.status_code = status_code
return response
def log_request(self, *args):
'''Use standard logging'''
code = self.request.response_code
if app.config['DEBUG']:
message = '%s [%s: %s]' % (self.request.uri, code,
HTTP_STATUS_CODES.get(code, 'Unknown'))
else:
message = self.format_request(*args)
if code < 404:
logger.info(message)
elif code < 500:
logger.warn(message)
else:
logger.error(message)
def http_status_message(code):
"""Maps an HTTP status code to the textual status"""
return HTTP_STATUS_CODES.get(code, '')
raise BadRequest
必须
raise ApiError
return make_api_resp()
"""
@app.errorhandler(ApiError)
def error_handler(error):
return api_error_handler(error)
from werkzeug.exceptions import HTTPException, MethodNotAllowed
from werkzeug.http import HTTP_STATUS_CODES
def default_error_handler(error):
return make_api_resp(status_code=error.code, msg=error.name)
for status_code in HTTP_STATUS_CODES.keys():
app.error_handler_spec[None][status_code] = default_error_handler
"""设置前处理和后处理"""
@app.before_request
def before_request():
"""如果HTTP Body为Json数据，需要设置Header
Content-Type: application/json
"""
logger.info(Logger.dumps(t='req'))
request.on_json_loading_failed = on_json_loading_failed
@app.after_request
def after_request(resp):
return resp
def as_dict(self):
return {
'status': self.status_code,
'message': HTTP_STATUS_CODES.get(self.status_code, '')
}
def name(self):
return HTTP_STATUS_CODES.get(503, 'Service Unavailable')
def message_for_failed_should(self):
message = 'Expected the status code {0}, but got {1}.'.format(
status, self._actual
)
if self._response_data:
response = 'Response Data:\n"{0}"'.format(self._response_data)
message = '\n'.join([message, response])
return message
def message_for_failed_should_not(self):
return 'Expected the status code not to be {0}'.format(status)
return Checker
# Make be_xxx matchers for all the status codes
_status_codes = HTTP_STATUS_CODES.keys()
for code in _status_codes:
matcher(make_status_checker('be', code))
matcher(make_status_checker('abort', code))
matcher(make_status_checker('return', code))
@matcher
class RedirectMatcher(object):
''' A matcher to check for redirects '''
name = 'redirect_to'
def __call__(self, location):
self._expected = 'http://localhost' + location
self._status_ok = True
return self
def http_status_message(code):
return HTTP_STATUS_CODES.get(code, '')
from typing import Iterable, List, Tuple
from werkzeug.http import HTTP_STATUS_CODES
from apistar import http
__all__ = ['WSGIEnviron', 'WSGIResponse']
STATUS_CODES = {
code: "%d %s" % (code, msg)
for code, msg in HTTP_STATUS_CODES.items()
}
ACCESS_CONTROL_ALLOW_ORIGIN = 'Access-Control-Allow-Origin'
WSGIEnviron = http.WSGIEnviron
class WSGIResponse(object):
__slots__ = ('status', 'headers', 'iterator')
def __init__(self,
status: str,
headers: List[Tuple[str, str]],
iterator: Iterable[bytes]) -> None:
self.status = status
self.headers = headers
self.iterator = iterator
@classmethod
def as_dict(self):
return {"status": self.status_code, "message": HTTP_STATUS_CODES.get(self.status_code, "")}