extend SQS event handler

[eviltwin]

Description

• report_batch_item_failures for partial batch processing
• maximum_concurrency to provide limits to SQS event source scaling
• remove outdated documentation about FIFO queues being unsupported

[eviltwin]

It was quite a small extension of the existing SQS handler, so I wasn't sure how much documentation would need adding for it... I'm happy to elaborate more on what I put, but the existing options didn't come with much explainer so I wasn't sure if that was a deliberate choice or not.

I corrected the FIFO docs part mostly in passing (I have confirmed that a FIFO queue works just fine).

[monkut]

It looks like we don't have good test coverage around this, but can you try to add testcases to cover this addition?

It appears we have minor coverage in test_placebo.py has event_source related testcases.

[coveralls]

coverage: 74.655% (-0.2%) from 74.81%
when pulling 61f8407 on eviltwin:master
into a38058b on zappa:master.

[eviltwin]

@monkut thanks, I'd looked for the test coverage when SQS events were originally implemented but I couldn't find them. I'll try to find the time in the next week to add coverage in the places you indicated :)

[github-actions]

Hi there! Unfortunately, this PR has not seen any activity for at least 90 days. If the PR is still relevant to the latest version of Zappa, please comment within the next 10 days if you wish to keep it open. Otherwise, it will be automatically closed.

[github-actions]

Hi there! Unfortunately, this PR was automatically closed as it had not seen any activity in at least 100 days. If the PR is still relevant to the latest version of Zappa, please open a new PR.