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Description
Context
The function status on line 354 of utilities.py does not properly handle the AccessDeniedException from AWS.
def status(self, function):
    response = None
    LOG.debug("getting status for event source %s", self.arn)
    uuid = self._get_uuid(function)
    if uuid:
        try:
            response = self._lambda.call("get_event_source_mapping", UUID=self._get_uuid(function))
            LOG.debug(response)
        except botocore.exceptions.ClientError:
            LOG.debug("event source %s does not exist", self.arn)
            response = None
    else:
        LOG.debug("No UUID for event source %s", self.arn)
    return response
If the user does not have permissions to use lambda:GetEventSourceMapping API call then this still says the event source does not exist.
Expected Behavior
The zappa update {{stage}} command should fail and alert the user their permissions are not enough.
Actual Behavior
The program thinks the event source does not exist, tries to create one with the same UUID and then this error is caused:
botocore.errorfactory.ResourceConflictException: An error occurred (ResourceConflictException) when calling the CreateEventSourceMapping operation: An event source mapping with SQS arn (" arn:aws:sqs:us-west-2:<account>:<sqs_name> ") and function (" <function_name> ") already exists. Please update or delete the existing mapping with UUID <uuid>
Steps to Reproduce
- Successfully deploy an app with a SQS event source.
 - Create a user or role with the following AWS permissions:
 
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "VisualEditor0",
            "Effect": "Allow",
            "Action": [
                "lambda:ListEventSourceMappings",
                "lambda:CreateEventSourceMapping"
            ],
            "Resource": "*"
        },
        {
            "Sid": "VisualEditor1",
            "Effect": "Allow",
            "Action": [
                "iam:GetRole",
                "lambda:UpdateFunctionCode",
                "s3:PutObject",
                "s3:GetObject",
                "iam:PassRole",
                "lambda:GetFunction",
                "lambda:UpdateFunctionConfiguration",
                "lambda:GetFunctionConfiguration",
                "lambda:GetAlias",
                "lambda:GetPolicy",
                "lambda:PutFunctionConcurrency"
            ],
            "Resource": [
                "arn:aws:iam::187760472520:role/*",
                "arn:aws:lambda:*:187760472520:event-source-mapping:*",
                "arn:aws:lambda:*:187760472520:function:*",
                "arn:aws:s3:::*/*"
            ]
        },
        {
            "Sid": "VisualEditor2",
            "Effect": "Allow",
            "Action": "s3:ListBucket",
            "Resource": "arn:aws:s3:::*"
        }
    ]
}
Your Environment
- Zappa version used: 0.58.0
 - Operating System and Python version: MacOS Python 3.11
 
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