Working with existing DynamoDB table flow: requires excessive permissions

[Isan-Rivkin]

When working with DynamoDB, some users prefer to create the DynamoDB externally (with IAC for example).

Current Flow:

1. Try create table
2. Check type: if error.Type == ResourceInUseException then table exists and it's ok dismiss error.
3. else:... handle error.

The problem:

Even when working with an existing DDB table the code requires to have excessive permissions (CreateTable, DeleteTable and UpdateTable).
If the user did not provide those extra permissions it will be a different error than ResourceInUseException which causes the flow to fail.

Suggested solutions:

Could be that user indicates in the config that it's an existing table and the code will skip CreateTableWithContext.
Another option is to try and DescribeTable before trying to create it, the downside here is that it will cause initial error in cases the table doesn't exist.
Another option could be check if the error is Permission related and try to describe the table, only if the table does not exist handle this as real error.