Caching directory creation refactor #2024
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The `getuid()` call was leftover from when the substitution pattern had two holes for `/tmp/cvd/` and `<uid>` before `/cache`. reference: google@f4f0f10
This keeps all of the directory creation for `cvd fetch` together, and exposes the dependency of the `Downloaders` class. Also, relax the condition for `CanCache` to allow errors in `CanHardLink` to simply disable caching, instead of terminating execution. This allows cases where the cache directory has not been created, like in `downloaders_test.cpp`.
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This keeps all of the directory creation for
cvd fetchtogether, andexposes the dependency of the
Downloadersclass.Also, relax the condition for
CanCacheto allow errors inCanHardLinkto simply disable caching, instead of terminatingexecution. This allows cases where the cache directory has not been
created like in
downloaders_test.cpp.