RFC: Dynamodb endpoint url for local testing

[rtrive]

Key information

• RFC PR:
• Related issue(s), if known:
• Area: Utilities-Parameters-DynamoDB
• Meet tenets: Yes
• Approved by: ''
• Reviewed by: ''

Summary

Add possibility to use this library in AWS lambda with DynamoDB local that run on docker.

Motivation

When you want to test your lambda locally you could user DynamoDB local to avoid to interact with remote database. Right now the parameter endpoint_url is missing on dynamodb provider configuratio

Proposal

  def __init__(
      self,
      table_name: str,
      key_attr: str = "id",
      sort_attr: str = "sk",
      value_attr: str = "value",
      endpoint_url: Optional[str] = None,
      config: Optional[Config] = None,
  ):
      """
      Initialize the DynamoDB client
      """

      config = config or Config()
      self.table = boto3.resource("dynamodb", endpoint_url=endpoint_url, config=config).Table(table_name)

Insert enpoindt_url parameter as init config of dynamodb provider

If this feature should be available in other runtimes (e.g. Java, Typescript), how would this look like to ensure consistency?

Drawbacks

Why should we not do this? Few people are interested on local dynamodb

Do we need additional dependencies? Impact performance/package size? no

Rationale and alternatives

• What other designs have been considered? Why not them?
• What is the impact of not doing this?

Unresolved questions

Optional, stash area for topics that need further development e.g. TBD

[heitorlessa]

Ciao Riccardo!! Definitely on-board with that. There are two things I wanted to do here but might be able to do only next week:

1. Add this - Should be a quick PR, so happy to guide a contribution if you'd like
2. Also add a Session parameter - This will allow customers to fetch parameters across account, as boto Config object isn't enough

I tagged this to make sure it's done and available in the next minor release ;)

Thank you!

[rtrive]

Ciao @heitorlessa!!

i build a small PR only for endpoint_url and i will try to merged it asap :)

[rtrive]

#376

[heitorlessa]

Merged 🎉 this will be out in the next release hopefully by next EOW

[heitorlessa]

hey @rtrive this is now out as part of 1.14.0 release ;) Thanks a lot for contributing it!

[rtrive]

it's a pleasure ;)