flask-restful reqparse check nested args,can archive required and allowed

nested_reqparse_2.py

#!/usr/bin/python
#! -*- encoding:utf-8 -*-

# Author:       Zhoulin
# FIle:         nested_RequestParser
# Description:  This method,the nested parser do not support required.
# Created:      2018/11/17 23:54
# Modified:
#       2018/11/17 23:54 :
# ---------------------------------

import traceback
from datetime import datetime
from flask import Flask, got_request_exception
from flask_restful import Resource, Api, reqparse
from cerberus import Validator

app = Flask(__name__)
api = Api(app)

import json


def config_validator(value):
    CONFIG_SCHEMA = {
        'back_storage': {'required': True, "allowed":["filestore", "bluestore"]},
        'db_type': {'required': True, 'allowed': ["leveldb", "rocksdb"]},
        'message_type': {'required': True, 'allowed': ["simple", "async"]}
    }
    v = Validator(CONFIG_SCHEMA)
    if v.validate(value):
        return value
    else:
        raise ValueError(json.dumps(v.errors))

class S3AdminAPIBase(Resource):
    def __init__(self):
        """TODO: to be defined1. """
        self.parser = reqparse.RequestParser()
        self.parser.add_argument('XX',required=True,
                                 help='NetEase auth token required')
        self.args = self.parser.parse_args()


class test(S3AdminAPIBase):
    def post(self):
        self.parser.add_argument('config', type=config_validator, action='update')
        self.args = self.parser.parse_args()
        return self.args


api.add_resource(test, '/test')
if __name__ == '__main__':
    app.run(debug=True, host="0.0.0.0", port=5001)

# curl -X "POST" "http://127.0.0.1:5001/test" -H 'Content-Type: application/json; charset=utf-8' -d $'{"XX": "zlyf","config": {"db_type": "leveldb","back_storage": "filestore","message_type": "ccc"}}'
# {
#     "message": {
#         "config": "{\"message_type\": [\"unallowed value ccc\"]}"
#     }
# }
# curl -X "POST" "http://127.0.0.1:5001/test" -H 'Content-Type: application/json; charset=utf-8' -d $'{"XX": "zlyf","config": {"db_type": "leveldb","back_storage": "filestore","message_type": "simple"}}'
# {
#     "XX": "zlyf",
#     "config": {
#         "back_storage": "filestore",
#         "db_type": "leveldb",
#         "message_type": "simple"
#     }
# }