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pkg/cache: support creating a json cache directly from a model.Model #1111
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joelanford
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Maybe we should create an empty digest file in the case that we're loading from a model?
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Would this be done in
LoadJSONFromModel
?Would you ever do a integrity check when you're loaded directly from a model?
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I mean from my perspective I'd call
LoadJSONFromModel
with a temporary directory and throw the directory away when I am done.There was a problem hiding this comment.
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I don't think so. The digest is a combination of the filesystem contents of the FBC and the cache, so if either change, then the cache is invalid. In this case, we have no FBC filesystem, so the integrity check doesn't make sense.
Yes, that would be the expected use of this function. But I'm not happy with the API because it never makes sense to do anything other than that. In which case, why ask the caller to pass a directory in? Ideally, the temporary directory would be an implementation detail not exposed in the API. But then how does the caller clean up when they're done? The
Cache
API design expects the cache to be re-usable and saved for later, so there is noClose()
orCleanup()
method in the cache API or in the JSON cache struct.Maybe need a higher level abstraction that uses a cache under the hood?
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Well, the "magic" happens in the
packagesFromModel
function so maybe the easier approach is to expose that publicly and then call the functions on thepackageIndex
? This seems to sidestep the caching mechanism entirely if I am not mistaken.There was a problem hiding this comment.
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Some of those functions accept a cache though (e.g.
operator-registry/pkg/cache/pkgs.go
Line 62 in 6c60284
So right now,
packageIndex
is very much coupled to the cache.There was a problem hiding this comment.
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Yeah.. I see that now. My mistake.