Python - 重试功能

如何解决Python - 重试功能

在代码中，我多次调用在远程数据库上执行不同任务的函数， 如果我正在运行一个调用，在某些情况下返回代码为 http 代码 = 202（“接受”）， 所以它也需要在“重试”模式下调用其他函数完成的任务，

代码：

      
class Trg:
    
    def __init__(self,**kwargs):
        self.__dict__.update(kwargs)
        self.kwargs = kwargs
        self.trg_cb_connention = Cluster("http://"+ self._checkIfIP(self.TARGET_CB_DB)+ ":8091",ClusterOptions(PasswordAuthenticator(self.TARGET_USER,self.TARGET_PASSWORD)))
    ..... 
    .....



    def _ConnectToBucket(self):
        try:
          bucket = self.trg_cb_connention.bucket(self.trg_bucket_name)
#means bucket exist,otherwise create 
          return True

        except Exception as e:

#bucket not exist,creating
          self._CreateBucket()



    def _CreateBucket(self):
          try:
             self.bm = self.trg_cb_connention.buckets()
             response = self.bm.create_bucket(CreateBucketSettings(name=self.trg_bucket_name,bucket_type="couchbase",ram_quota_mb=100))
             if response.http_status == 202: #acepected
              #means "acepected:"
#Now call to function which validate the bucket created
             
                self.retry_call(self._CheckBucketCreated())
                     
           
             else:
                print("to check:",response) 

    def retry_call(function_name,args=None,kwargs=None,retries=300):
          pass_on_args = args if args else []
          pass_on_kwargs = kwargs if kwargs else {}
          for index in range(1,retries+1):
            try:
                return function_name(*pass_on_args,**pass_on_kwargs)
            except Exception as error:
                if index == retries:
                    print("Failed %s attempts at calling: %s",retries,function_name)
                    raise
                else:
                    print("Failed %d attempt(s) at calling: %s",index,function_name)
                    print("retrying") 

失败原因：

Failed %d attempt(s) at calling: %s 1 MIG_ilceosp089
....
.......
........
retrying
Failed %s attempts at calling: %s 300 MIG_ilceosp089
Error 'Trg' object is not callable

首先，为什么会失败？ 第二 - 不确定我是否做得对，我很好奇这种操作的正确方法是什么。