| Commit message (Collapse) | Author | Age |
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does not resume.
This commit was supported by the NSF-funded DataLad project.
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Removed dependency on MissingH, instead depending on the split
library.
After laying groundwork for this since 2015, it
was mostly straightforward. Added Utility.Tuple and
Utility.Split. Eyeballed System.Path.WildMatch while implementing
the same thing.
Since MissingH's progress meter display was being used, I re-implemented
my own. Bonus: Now progress is displayed for transfers of files of
unknown size.
This commit was sponsored by Shane-o on Patreon.
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This could avoid a memory leak. It would only happen when
the meter didn't look at sofar.
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Display progress meter on send and receive from remote.
Added a new hGetMetered that can read an exact number of bytes (or
less), updating a meter as it goes.
This commit was sponsored by Andreas on Patreon.
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This commit was sponsored by Thom May on Patreon.
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as frequently as changes were reported, up to hundreds of times per second, which used unncessary bandwidth when running git-annex over ssh etc.
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local git repo, and from a remote git repo.
Had everything available, just didn't combine the progress meter with the
other places progress is sent to update it. (And to a remote repo already
did show progress.)
Most special remotes should already display progress meters with -J,
same as without it. One exception to this is the web, since it relies on
wget/curl progress display without -J. Still todo..
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It's a code smell, can lead to hard to diagnose error messages.
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I don't quite understand the cause of the deadlock. It only occurred
when git-annex-shell transferinfo was being spawned over ssh to feed
download transfer progress back. And if I removed this line from
feedprogressback, the deadlock didn't occur:
bytes <- readSV v
The problem was not a leaked FD, as far as I could see. So what was it?
I don't know.
Anyway, this is a nice clean implementation, that avoids the deadlock.
Just fork off the async threads to handle filtering the stdout and stderr,
and let them clean up their handles whenever they decide to exit.
I've verified that the handles do get promptly closed, although a little
later than I would expect. Presumably that "little later" is what
was making waiting on the threads deadlock.
Despite the late exit, the last line of stdout and stderr appears where
I'd want it to, so I guess this is ok..
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commands to hang at the end of a file transfer.
Stderr reader blocks waiting for all stderr, and so blocks the process ever
exiting.
I tried several ways to get around this, but no success yet. For now,
disable the stderr reader entirely.
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(eep!)
It sounds worse than it is. ;)
Some external special remotes may run commands that display progress on
stderr. If git-annex is run with --quiet, this should filter out such
displays while letting the errors through.
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Came up with a generic way to filter out progress messages while keeping
errors, for commands that use stderr for both.
--json mode will disable command outputs too.
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hGetSomeString reads one byte at a time, so unicode bytes are not composed.
The problem comes when outputting that to the console with hPut; that
tried to apply the handle's encoding, and so we get mojibake.
Instead, use ByteStrings, and only convert it to a string for parsing, not
for display.
Note that there are a couple of other things that use hGetSomeString,
which I've left as-is for now.
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This should be essentially no-op change for hGetContentsMetered, since it
always gets the entire contents. So the only difference is that each chunk
of the lazy bytestring will always be the full chunk size. So, I'm pretty
sure this is safe. Also, the only current users of hGetContentsMetered are
reading files, so the stream won't block for long in the middle.
The improvement is that hGetUntilMetered will always get some multiple of
the defaultChunkSize. This will allow the S3 multipart code to pick a fixed
size and know that hGetUntilMetered will really get that size.
(cherry picked from commit bd09046291a5fde26afc02f5838c6594c1fa9c00)
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This only performs some basic tests so far; no testing of chunking or
resuming. Also, the existing encryption type of the remote is used; it
would be good later to derive an encrypted and a non-encrypted version of
the remote and test them both.
This commit was sponsored by Joseph Liu.
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Leverage the new chunked remotes to automatically resume downloads.
Sort of like rsync, although of course not as efficient since this
needs to start at a chunk boundry.
But, unlike rsync, this method will work for S3, WebDAV, external
special remotes, etc, etc. Only directory special remotes so far,
but many more soon!
This implementation will also properly handle starting a download
from one remote, interrupting, and resuming from another one, and so on.
(Resuming interrupted chunked uploads is similarly doable, although
slightly more expensive.)
This commit was sponsored by Thomas Djärv.
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Not yet used by any special remotes, but should not be too hard to add it
to most of them.
storeChunks is the hairy bit! It's loosely based on
Remote.Directory.storeLegacyChunked. The object is read in using a lazy
bytestring, which is streamed though, creating chunks as needed, without
ever buffering more than 1 chunk in memory.
Getting the progress meter update to work right was also fun, since
progress meter values are absolute. Finessed by constructing an offset
meter.
This commit was sponsored by Richard Collins.
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Omitted a couple of files what have had significant contributions from
others.
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This has not been tested at all. It compiles!
The only known missing things are support for encryption, and for get/set
of special remote configuration, and of key state. (The latter needs
separate work to add a new per-key log file to store that state.)
Only thing I don't much like is that initremote needs to be passed both
type=external and externaltype=foo. It would be better to have just
type=foo
Most of this is quite straightforward code, that largely wrote itself given
the types. The only tricky parts were:
* Need to lock the remote when using it to eg make a request, because
in theory git-annex could have multiple threads that each try to use
a remote at the same time. I don't think that git-annex ever does
that currently, but better safe than sorry.
* Rather than starting up every external special remote program when
git-annex starts, they are started only on demand, when first used.
This will avoid slowdown, especially when running fast git-annex query
commands. Once started, they keep running until git-annex stops, currently,
which may not be ideal, but it's hard to know a better time to stop them.
* Bit of a chicken and egg problem with caching the cost of the remote,
because setting annex-cost in the git config needs the remote to already
be set up. Managed to finesse that.
This commit was sponsored by Lukas Anzinger.
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There was confusion in different parts of the progress bar code about
whether an update contained the total number of bytes transferred, or the
number of bytes transferred since the last update. One way this bug
showed up was progress bars that seemed to stick at zero for a long time.
In order to fix it comprehensively, I add a new BytesProcessed data type,
that is explicitly a total quantity of bytes, not a delta.
Note that this doesn't necessarily fix every problem with progress bars.
Particularly, buffering can now cause progress bars to seem to run ahead
of transfers, reaching 100% when data is still being uploaded.
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Joey Hess
Joey Hess