2016-04-26 42 views
2

我下面這個例子:速率限制類視圖瓶

http://flask-limiter.readthedocs.org/en/stable/#ratelimit-string

app = Flask(__name__) 
limiter = Limiter(app, key_func=get_remote_address) 

class MyView(flask.views.MethodView): 
    decorators = [limiter.limit("10/second")] 
    def get(self): 
     return "get" 

    def put(self): 
     return "put" 

我的問題是,例如,應用程序,限制和類在同一個文件中定義我的如果應用程序和限制器在同一個文件中定義,但我的類存在於單獨的文件中。

如果我導入限制器或應用程序,我的Flask應用程序無法啓動,因爲通知dependencies。如何解決這個問題,推薦的方法是什麼?我想將限制器應用於特定的端點。 我試過from flask import current_app爲了初始化限制器,但是這個函數並沒有把它作爲一個有效的參數。任何建議?

文件信息:

  • app.py
  • api_main.py

在app.py我定義我的資源:

api_app = Flask(__name__) # Flask Application 
api_app.config.from_pyfile("../../../conf/settings.py") # Flask configuration 

imbue_api = restful.Api(api_app) # Define API 
limiter = Limiter(api_app, key_func=get_remote_address, global_limits=["10 per second"]) 

imbue_api.add_resource(ApiBase, settings.BASE_API_URL) 

在api_main。 py我已經定義了我所有的類:

class ApiBase(Resource): 
    @authenticator.requires_auth 
    def get(self): 
     """ 

     :return: 
     """ 
     try: 
      # ========================================================= 
      # GET API 
      # ========================================================= 
      log.info(request.remote_addr + ' ' + request.__repr__()) 
      if request.headers['Content-Type'] == 'application/json': 
       # ========================================================= 
       # Send API version information 
       # ========================================================= 
       log.info('api() | GET | Version' + settings.api_version) 
       response = json.dumps('version: ' + settings.api_version) 
       resp = Response(response, status=200, mimetype='application/json') 
       return resp 

     except KeyError: 
      response = json.dumps('Invalid type headers. Use application/json') 
      resp = Response(response, status=415, mimetype='application/json') 
      return resp 

     except Exception, exception: 
      log.exception(exception.__repr__()) 
      response = json.dumps('Internal Server Error') 
      resp = Response(response, status=500, mimetype='application/json') 
      return resp 

回答

1

使用Resource.method_decorators

https://github.com/flask-restful/flask-restful/blob/master/flask_restful/init.py#L574

它被應用於每個請求。您可以在您的視圖類覆蓋它:

@property 
def method_decorators(self): 
    # get some limiter bound to the `g` context 
    # maybe you prefer to get it from `current_app` 
    return g.limiter 

如果你願意,你可以追加限制器現有method_decorators添加資源到你的寧靜API之前。

ApiBase.method_decorators.append(limiter) 
imbue_api.add_resource(ApiBase, settings.BASE_API_URL)