Check if repository metadata already exists (is cached)

[felixsch]

Instead of re-downloading repomd metadata, check if the files are already exists in the "cache" (repository_path).

How to review:

$ git checkout master
$ bundle exec bin/rmt-cli repos enable 6301
$ bundle exec bin/rmt-cli mirror repository 6301
$ bundle exec bin/rmt-cli mirror repository 6301
# expect: See that the metadata is re-downloaded (↓ instead of →)

$ git checkout fix-non-cached-metadata
$ bundle exec bin/rmt-cli mirror repository 6301
# expect: See that the metadata is NOT re-downloaded (→ instead of ↓)

Note: Why is there no test for this? The logic of when to download what is in downloader.rb rather then repomd.rb. If you insist I add a test checking if cache_dir: is set? Needed?

Thank you for reviewing!

cheers,

[mssola]

Works as advertised 👍🏻

[mssola]

If you insist I add a test checking if cache_dir: is set? Needed

Not needed from my side.