For sysadmins of this service, it would be nice to have some simple endpoints that return json showing status about number of files, size, and request activity

blake2b is built in to python's default hashlib now -- no need to install something extra to use blake2b

Add openapi docs to the root page because it's useful and easy

Replace Flask with Sanic

This codebase could potentially be used for reference data storage, allowing us to keep a standardized, centralized place to upload & download RE import data, SDK app data, etc. I propose adding an endpoint that provides a JSON-RPC 2.0 api for uploading files:

Methods:

• upload_file - Upload a new file and get its ID. Returns a hex-encoded content hash of the file, which represents its ID. If the file already exists, then the user is given the file ID and this is a no-op. The user can provide some optional additional metadata which is stored in Minio's object metadata.
• download_file - Download a file from the store using its ID, which is its content hash.

The server can gzip files if they have not already been compressed. We can also have a Python client module that takes care of creating tarballs, gzip compression/extraction, proper low-memory streaming, and checking downloaded data against its content hash.

Optionally, we could have a policy to expire files if they haven't been accessed after a certain time period, such as 500 days.

Blake2b hashing should be used.

Users can upload directories if they pack them into a tarball, and the client can help with this. The server can detect if uploaded files are already gzipped using this

Currently the cache service appears to make a new request to the auth service for every request: https://github.com/kbase/file_cache_server/blob/develop/src/caching_service/authorization/service_token.py

Instead, the service should cache tokens for a time period equal to the cachefor field in the response (typically 5m)

Using http://github.com/jayrbolton/mock_microservice