sqs dispatcher

[ronybony1990]

send executionPlan and event to sqs queue

[cerveada]

The tests are failing because license header is missing in new files.

[wajda]

@ronybony1990, thank you for the PR, it looks like a really good addition to the Spline agent. However there is one thing I'm unsure of - the dependency on the AWS SDK. It almost doubles the size of the agent bundle and pulls several other transitive dependancies widening the area of potential collision with other agent or spark extensions' dependencies.
Since at the end of the day the SQS request is made through the AWS API call anyway, I'm thinking that maybe calling it directly without SDK library would be a better approach. Error handling and retrial logic doesn't seem too complicated for the use case. Plus there is FallbackLineageDispatcher and CompositeLineageDispatcher that can be used to improve client fault tolerance.
Another option would be making the SDK dependency optional, so that it is not automatically included into the bundle. The user would have to provide all necessary AWS dependencies himself to be able to use SQS dispatcher.
Yet another option would be to create an additional spline-agent-extra-aws module or alike that would contain AWS specific plugins and extensions to the agent, to be used complimentary to the agent-bundle.

@cerveada what do you think?

[cerveada]

I mostly agree.

• Current solution means big bundle size.
• Reimplementing the AWS call is more work (not sure how much).
• optional dependency requires from user to do the dependency resolution.
• Creating a module is theoretically nice, but it is another part that can cause dependency conflicts.

[sonarcloud]

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