MIDRC-901 Add S3 endpoint

[paulineribeyre]

Link to JIRA ticket if there is one: https://ctds-planx.atlassian.net/browse/MIDRC-901

New Features

• Add the /s3 endpoint, which receives incoming S3 requests, re-signs them with internal credentials, and forwards them to AWS S3

Improvements

• Always log errors before returning them to the user

[github-actions]

The style in this PR agrees with black. ✔️

This formatting comment was generated automatically by a script in uc-cdis/wool.

[AlbertSnows]

this section seems suspicious, although I think I see what you're doing.
making existing_routes a set is a good start.
we can filter out non api routes via

Suggested change

	for route in app.routes:
	api_routes_only = list(filter(lambda r: isinstance(r, APIRoute), app.routes)

then, you could do a for index, route in api_routes_only sort of thing.
the index is going to be unique for each route, so I don't think you'd need the while loop.
e.g.

Suggested change

	for route in app.routes:
	for index, route in enumerate(api_routes_only):
	route.op_id = f"{route.name}_{index}"
	existing_routes.add(route.operating_id)

[paulineribeyre]

the goal is to avoid duplicate route IDs by calling them get_status, get_status_2, get_status_3 etc. Not adding a digit to all routes, although of course that would make them unique too 🙂

[AlbertSnows]

tentative approval. I am not that familiar with s3 stuff, so I would suggest seeking a few more eyes before merging.

[jawadqur]

Do we only want to return response if the content-type is set? Probably true, but just curious 😄

[paulineribeyre]

We still return the response if the content-type isn't set, but in that case we don't include media_type=response.headers["Content-Type"] 👍

[jawadqur]

Apart from that one question this is very cool. This will be great!