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Added Annex.cleanup, which is a general purpose interface for adding
actions to run at the end.
Remotes with the old git-annex-shell will commit every time, and have no
commit command, so hide stderr when running the commit command.
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useful when adding hundreds of thousands of files on a system with plenty
of memory.
git add gets quite slow in such a large repository, so if the system has
more than the ~32 mb of memory the queue can use by default, it's a useful
optimisation to increase the queue size, in order to decrease the number
of times git add is run.
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Now gitattributes are looked up, efficiently, in only the places that
really need them, using the same approach used for cat-file.
The old CheckAttr code seemed very fragile, in the way it streamed files
through git check-attr.
I actually found that cad8824852aa0623dc41eac02a9e2bae47d88ec4
was still deadlocking with ghc 7.4, at the end of adding a lot of files.
This should fix that problem, and avoid future ones.
The best part is that this removes withAttrFilesInGit and withNumCopies,
which were complicated Seek methods, as well as simplfying the types
for several other Seek methods that had a Backend tupled in.
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I had not realized what a memory leak the lazy state monad could be,
although I have not seen much evidence of actual leaking in git-annex.
However, if running git-annex on a great many files, this could matter.
The additional Utility.State.changeState adds even more strictness,
avoiding a problem I saw in github-backup where repeatedly modifying
state built up a huge pile of thunks.
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Ssh connection caching is now enabled automatically by git-annex. Only one
ssh connection is made to each host per git-annex run, which can speed some
things up a lot, as well as avoiding repeated password prompts. Concurrent
git-annex processes also share ssh connections. Cached ssh connections are
shut down when git-annex exits.
Note: The rsync special remote does not yet participate in the ssh
connection caching.
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the trust level of a remote.
This overrides the trust.log, and is overridden by the command-line trust
parameters.
It would have been nicer to have Logs.Trust.trustMap just look up the
configuration for all remotes, but a dependency loop prevented that
(Remotes depends on Logs.Trust in several ways). So instead, look up
the configuration when building remotes, storing it in the same forcetrust
field used for the command-line trust parameters.
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Made --from and --to command-specific options.
Added generic storage for values of command-specific options,
which allows removing some of the special case fields in AnnexState.
(Also added generic storage for command-specific flags, although there are
not yet any.)
Note that this storage uses a Map, so repeatedly looking up the same value
is slightly more expensive than looking up an AnnexState field. But, the
value can be looked up once in the seek stage, transformed as necessary,
and passed in a closure to the start stage, and this avoids that overhead.
Still, I'm hesitant to use this for things like force or fast flags.
It's probably best to reserve it for flags that are only used by a few
commands, or options like --from and --to that it's important only be
allowed to be used with commands that implement them, to avoid user
confusion.
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is output by git annex find.
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Constructors and configuration make sense in separate modules.
A separate Git.Types is needed to avoid cycles.
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Conflicts:
git-annex.cabal
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multiple different encrypted special remotes.
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Thanks to Bas van Dijk for providing the instance declarations I needed.
Grody stuff. Bas is talking about perhaps providing utility functions that
contain the ugly parts, so this code may be able to be removed using a
future version of monad-control.
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I had to, I hope temporarily, lose my nice Annex newtype, and use a type
synonym. This because I cannot find a way to derive a MonadBaseControl
instance of the Annex newtype. I've emailed Bas van Dijk in hope he can
help get the newtype back.
Otherwise appears to build & work.
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It would be nice if command-specific options were supported. The first
difficulty is that which command is being called is not known until after
getopt; but that could be worked around by finding the first non-dashed
parameter. Storing the settings without putting them in the annex monad is
the next difficulty; it could perhaps be handled by making the seek stage
pass applicable settings into the start stage (and from there on to perform
as needed). But that still leaves a problem, what data type to use to
represent the options between getopt and seek?
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Many functions took the repo as their first parameter. Changing it
consistently to be the last parameter allows doing some useful things with
currying, that reduce boilerplate.
In particular, g <- gitRepo is almost never needed now, instead
use inRepo to run an IO action in the repo, and fromRepo to get
a value from the repo.
This also provides more opportunities to use monadic and applicative
combinators.
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option is no longer used.
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Before the config was read each time onLocal was called, and entirely
redundantly since it's read for same-host remotes on startup.
Also a minor bug fix: When rsyncing to a same-host remote, use the
rsync-options from the repository that the user ran git-annex in, not those of
the receiving repository.
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no code changes
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split into generic IO code, and a thin Annex wrapper
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Only one place need to filter the list of remotes for ignored remotes:
keyPossibilities. Make the full list available to everything else.
This allows getting rid of the special case handing for --from and --to
to make ignored remotes not be ignored with those options.
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This should change no behavior, but opens the poissibility to use the
matcher for other sorts of limits on which files git-annex processes.
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get, drop: Added --auto option, which decides whether to get/drop content
as needed to work toward the configured numcopies.
The problem with bundling it up in optimize was that I then found I wanted
to run an optmize that did not drop files, only got them. Considered adding
a --only-get switch to it, but that seemed wrong. Instead, let's make
existing subcommands optionally smarter.
Note that the only actual difference between drop and drop --auto is that
the latter does not even try to drop a file if it knows of not enough
copies, and does not print any error messages about files it was unable to
drop.
It might be nice to make get avoid asking git for attributes when not in
auto mode. For now it always asks for attributes.
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This includes a generic JSONStream library built on top of Text.JSON
(somewhat hackishly).
It would be possible to stream out a single json document describing
all actions, but it's probably better for consumers if they can expect
one json document per line, so I did it that way instead.
Output from external programs used for transferring files is not
currently hidden when outputting json, which probably makes it not very
useful there. This may be dealt with if there is demand for json
output for --get or --move to be parsable.
The version, status, and find subcommands have hand-crafted output and
don't do json. The whereis subcommand needs to be modified to produce
useful json.
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This will allow adding other styles of output.
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fmap = liftM
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the liftM on its own can lift all the way into IO.
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Was a type alias; using newtype has the benefit that type errors will
show "Annex foo" rather than two lines of internal type nonsense. Yay!
There should be no other effects to size or runtime.
I've tried to do this at least twice before (each time I read RWH chapter 10);
finally understood how to this time.. sorta.
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The only remaining vestiage of backends is different types of keys. These
are still called "backends", mostly to avoid needing to change user interface
and configuration. But everything to do with storing keys in different
backends was gone; instead different types of remotes are used.
In the refactoring, lots of code was moved out of odd corners like
Backend.File, to closer to where it's used, like Command.Drop and
Command.Fsck. Quite a lot of dead code was removed. Several data structures
became simpler, which may result in better runtime efficiency. There should
be no user-visible changes.
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It was always imported qualified as Git anyway
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Doubles the speed of fsck, and speeds up drop as well.
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Support creating the branch.
Unified branch state into a single data type.
Only commit changes when the index has been changed.
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This will speed up typical cases like git-annex get, which currently
has to read the location log once, then read it a second time in order to
add a line to it. Since these reads now involve more than just reading
in a file, it seemed good to add a cache layer.
Only the most recent thing needs to be cached, because git-annex has
good locality; it operates on one file at a time, and only cares
about one item from the branch per file.
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There is no suitable git hook to run code when pulling changes that
might need to be merged into the git-annex branch. The post-merge hook
is only run when changes are merged into HEAD, and it's possible,
and indeed likely that many pulls will only have changes in git-annex,
but not in HEAD, and not trigger it.
So, git-annex will have to take care to update the branch before reading
from it, to make sure it has merged in current info from remotes. Happily,
this can be done quite inexpensively, just a git-show-ref to list
branches, and a minimalized git-log to see if there are unmerged changes
on the branches. To further speed up, it will be done only once per
git-annex run, max.
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It doesn't export `state` there, so hiding it fails. Just list explicitly
what we use.
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Joey Hess