35 lines
1.6 KiB
Text
35 lines
1.6 KiB
Text
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It took 9 hours, but I finally got to make [[!commit c0dc134cded6078bb2e5fa2d4420b9cc09a292f7]],
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which both removes 35 lines of code, and adds chunking support to all
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external special remotes!
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The groundwork for that commit involved taking the type scheme I sketched
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out yesterday, completely failing to make it work with such high-ranked
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types, and falling back to a simpler set of types that both I and GHC seem
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better at getting our heads around.
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Then I also had more fun with types, when it turned out I needed to
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run encryption in the Annex monad. So I had to go convert several parts of
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the utility libraries to use MonadIO and exception lifting. Yurk.
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The final and most fun stumbling block caused git-annex to crash when
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retriving a file from an external special remote that had neither
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encryption not chunking. Amusingly it was because I had not put in an
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optimation (namely, just renaming the file that was retrieved in this case,
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rather than unnecessarily reading it in and writing it back out). It's
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not often that a lack of an optimisation causes code to crash!
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So, fun day, great result, and it should now be very simple to convert
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the bup, ddar, gcrypt, glacier, rsync, S3, and WebDAV special remotes
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to the new system. Fingers crossed.
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But first, I will probably take half a day or so and write a
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`git annex testremote` that can be run in a repository and does live
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testing of a special remote including uploading and downloading files.
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There are quite a lot of cases to test now, and it seems best to get
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that in place before I start changing a lot of remotes without a way to
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test everything.
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----
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Today's work was sponsored by Daniel Callahan.
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