SSM的Boto3 AWS API错误响应 [英] Boto3 AWS API error responses for SSM

问题描述

我正在使用一个简单的boto3脚本从aws帐户中的SSM参数存储中检索参数. python脚本如下所示:

I am using a simple boto3 script to retrieve a parameter from SSM param store in my aws account. The python script looks like below:

client = get_boto3_client('ssm', 'us-east-1')
try:
    response = client.get_parameter(Name='my_param_name',WithDecryption=True)
except Exception as e:
    logging.error("retrieve param error: {0}".format(e))
    raise e
return response

如果给定的参数不可用，我将在响应中收到一个通用错误，如下所示:

If the given parameter is not available, I get a generic error in the response like below:

 An error occurred (ParameterNotFound) when calling the GetParameter operation: Parameter my_param_name not found.   

我已经从 boto3验证了方法签名ssm docs .相关 AWS API文档确认返回400响应当参数存储中不存在参数时.

I have verified method signature from boto3 ssm docs. Related AWS API Docs confirms to return a 400 response when parameter does not exist in the param store.

我的问题是，如何验证响应中捕获的异常是否实际上是400状态代码，以便我可以进行相应处理.

My question is that how do I verify if the exception caught in the response is actually a 400 status code so that I can handle it accordingly.

推荐答案

您可以尝试捕获client.exceptions.ParameterNotFound:

client = get_boto3_client('ssm', 'us-east-1')

try:
  response = client.get_parameter(Name='my_param_name',WithDecryption=True)
except client.exceptions.ParameterNotFound:
  logging.error("not found")

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