Possum Add support for Possum files in S3

Currently, Possum writes hashes and S3 URIs for built functions in ~/.possum/<name> locally. To support using Possum with build tools such as AWS CodePipeline where there may not be a persistent filesystem, have the location of the .possum directory be configured as an S3 bucket.

Apr 11 '18 04:04 brysontyrrell

@tomislacker Looking for your input on this as well as we improve Possum for CI/CD use.

Sep 19 '18 16:09 brysontyrrell

That seems legit to me. May want to add some functionality to clear out older hashes too. I realized today my bucket was already up to ~950MB in just the couple of days I've been working on my project. Not that it breaks the bank, but could be a nuisance.

On the same token, that is my deployment bucket. For a cache bucket, it probably doesn't matter as much as the onus should be on the administrator to have an appropriate lifecycle policy setup.

Sep 19 '18 16:09 tomislacker

I'm open for changing the behavior of writing the files to the deployment bucket. We need to consider the changes for opting between uploading and saving locally in #12 .

Sep 19 '18 16:09 brysontyrrell