Incompatible with Localstack

[jl-DaDar]

not sure if this is dynamodump issue or a localstack issue. I can use aws cli on localstack so I assume this is a dynamodump issue.

bash-4.2# dynamodump --host xxxxx-container-localstack --port 4566 -m backup -r local -s xxxxxxxxx --accessKey test --secretKey test
INFO:root:Found 1 table(s) in DynamoDB host to backup: comm-dev-pricing-price-retails
INFO:root:Starting backup for xxxxxxxxx.
INFO:root:Dumping table schema for xxxxxxxxx
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib64/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib64/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.8/site-packages/dynamodump/dynamodump.py", line 673, in do_backup
    table_desc = dynamo.describe_table(TableName=table_name)
  File "/usr/local/lib/python3.8/site-packages/botocore/client.py", line 415, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/usr/local/lib/python3.8/site-packages/botocore/client.py", line 745, in _make_api_call
    raise error_class(parsed_response, operation_name)
botocore.errorfactory.ResourceNotFoundException: An error occurred (ResourceNotFoundException) when calling the DescribeTable operation: Cannot do operations on a non-existent table


^CTraceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/dynamodump/dynamodump.py", line 1337, in main
    args.read_capacity,
AttributeError: 'Namespace' object has no attribute 'read_capacity'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/dynamodump", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.8/site-packages/dynamodump/dynamodump.py", line 1367, in main
    q.join()
  File "/usr/lib64/python3.8/queue.py", line 89, in join
    self.all_tasks_done.wait()
  File "/usr/lib64/python3.8/threading.py", line 302, in wait
    waiter.acquire()
KeyboardInterrupt

[bchew]

I did some tests and from what I can tell the issue is potentially due to dynamodump's usage of local as the region. As mentioned in #139 (comment), this would be outside the scope of the original intention of what the tool was designed for but happy for PRs of the changes to resolve this issue. 🙂

[mnuzzo-moxe]

Wouldn't you be able to key off of if the host parameter is set instead of if the region is local? Or am I missing something that would make this change complex?