13 lines
940 B
Markdown
13 lines
940 B
Markdown
to work around [[forum/original_filename_on_s3/]], i need to get the key from a file, and i'm not within the git-annex process. i know there's `git annex lookupkey $FILE`, but that incurs significant overhead because the whole git annex runtime needs to fire up. in my tests, this takes around 25ms on average.
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could i optimise this by simply doing a `readlink` call on the git checkout? it sure looks like `readlink | basename` is all I really need, and that can probably be done below 10ms (4ms in my tests). how reliable are those links anyways, and is that what lookupkey does?
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similarly, i wonder if it's safe to bypass git-annex and talk straight with git to extract location tracking? i can jump from 90ms to below 10ms for such requests if I turn `git annex find <file>` into the convoluted:
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<pre>
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git annex lookupkey $file
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printf $key | md5sum
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git cat-file -p refs/heads/git-annex:$hash/${key}.log
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</pre>
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thanks. --[[anarcat]]
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