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exceptions.py
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exceptions.py
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import traceback as tb
import logging
from flask import request, jsonify, make_response
logger = logging.getLogger(__name__)
# make an answer to client
def answer(status=0, msg='', result=None):
if status == 0 and not msg and result is None:
status = -1000
msg = "nothing happened"
if status == 200 and not msg:
msg = 'ok'
a = {"status": status, "detail": msg}
a.update({'request': request.args})
if result is not None:
a.update({"result": result})
return make_response(jsonify(a), status)
# make an answer as exception
class AnswerException(Exception):
def __init__(self, status, msg='', result=None):
self.status, self.msg, self.result = status, msg, result
self.answer = answer(status, msg, result)
Exception.__init__(self, self.answer)
# standard exception treatment for any api function
def exception_handler(f):
def exception_f(*args, **kwargs):
try:
return f(*args, **kwargs)
except AnswerException as e:
traceback = tb.format_exc()
logger.error(traceback)
if 'traceback' not in e.result:
e.result['traceback'] = traceback
if hasattr(exception_f, 'request_id') and not e.result['request_id']:
e.result['request_id'] = exception_f.request_id
return answer(e.status, e.msg, e.result)
except Exception as e:
traceback = tb.format_exc()
logger.error(traceback)
print(traceback)
body = {'traceback': traceback}
if hasattr(exception_f, 'request_id'):
body['request_id'] = exception_f.request_id
return answer(500, e.__class__.__name__ + ': ' + str(e), body)
exception_f.__name__ = f.__name__
return exception_f