Only the presence or absence of whitespace is significant; but not the
actual whitespace characters. Don't compare whitespace bytes.
Compare the C git implementation at [1].
[1] https://github.com/git/git/blob/0d0e1e8/xdiff/xutils.c#L173
Bug: 563570
Change-Id: I2d0522b637ba6b5c8b911b3376a9df5daa9d4c27
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
This reverts commit 3aee92478c, which
increased fetch latency significantly.
Change-Id: Id31a94dff83bf7ab2121718ead819bd08306a0b6
Signed-off-by: Yunjie Li <yunjieli@google.com>
Avoid using a key written to a file. This makes it clearer that
the test does not rely on files being present.
Change-Id: I31cf4f404aab5b891c32fc4bda906b7f8fe03777
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
A builder API provides a more convenient way to define a customized
SshdSessionFactory by hiding the subclassing.
Also provide a new interface SshConfigStore to abstract away the
specifics of reading a ssh config file, and provide a way to customize
the concrete ssh config implementation to be used. This facilitates
using an alternate ssh config implementation that may or may not be
based on files.
Change-Id: Ib9038e8ff2a4eb3a9ce7b3554d1450befec8e1e1
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Avoid trying other authentication methods on SocketException or on
InterruptedIOException. SocketException is rather fatal, such as
nothing listening on the peer's port, connection reset, or it could
be a connection time-out.
Time-outs enforced by Timeout{Input,Output}Stream may result in
InterruptedIOException being thrown.
In both cases, it makes no sense to try other authentication methods,
and doing so may wrongly report "authentication not supported" or
"cannot open git-upload-pack" or some such instead of reporting a
time-out.
Bug: 563138
Change-Id: I0191b1e784c2471035e550205abd06ec9934fd00
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Config core.eol is to be ignored if core.autocrlf is true or input.[1]
JGit didn't do so when core.autocrlf=input was set.
[1] https://git-scm.com/docs/git-config#Documentation/git-config.txt-coreeol
Bug: 561877
Change-Id: I5e62e0510d160b5113c1090319af09c2bc1bcb59
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
In Git 2.10.0 the interpretation of gitattributes changed or was fixed
such that "* text=auto eol=crlf" would indeed still do auto-detection
of text vs. binary content.[1] Previously this was identical to
"* text eol=crlf", i.e., treating all files as text.
JGit still did the latter, which caused surprises because it changed
binary files.
[1] https://github.com/git/git/blob/master/Documentation/RelNotes/2.10.0.txt#L248
Bug: 561341
Change-Id: I5b6fb97b5e86fd950a98537b6b8574f768ae30e5
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Bazel buildtools project includes in addition to buildifier also unused
deps and buildozer utilities, that detect unused dependencies and fix
them by applying the removal to the build files. This change is created
by installing unused_deps from buildtools@HEAD and running:
$ unused_deps //...
and applying the suggested modifications.
Change-Id: Iad74ec2fa719475b29391586f40b13ae30477004
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
Log the stack trace in order to help understanding the bug 563380
Bug: 563380
Change-Id: If993a63ccec5042b10e1d5e945b18f4b5f06d8ff
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Update dependency to Bouncy Castle to 1.65.
Add the IssuerFingerprint as a hashed sub-packet in the signature. If
added unhashed, GPG ignores it.
Bug: 553206
Change-Id: I6807e8e2385e6ec5790f388e4753a44aa9474ebb
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
OSGi semantic versioning allows breaking implementers in a minor
release.
Change-Id: Ib55dc43dd3b50b0ef39a7094190f230210aee4b6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* changes:
PackBitmapIndex: Set distance threshold
PackBitmapIndex: Not buffer inflated bitmap in BasePackBitmapIndex
PackBitmapIndex: Remove convertedBitmaps in the Remapper
PackBitmapIndex: Reduce memory usage in GC
PackBitmapIndex: Add AddToBitmapWithCacheFilter class
PackBitmapIndex: Add util methods and builder to BitmapCommit
PackBitmapIndex: Move BitmapCommit to a top-level class
Refactor: Make retriveCompressed an method of the Bitmap class
Setting the distance threshold to 2000 in PackWriterBitmapPreparer to
reduce memory usage in garbage collection. When the threshold is 0, GC
for the msm repository would use about 37 GB memory to complete. After
setting it to 2000, GC can finish in 75 min with about 10 GB memory.
Change-Id: I39783eeecbae58261c883735499e61ee1cac75fe
Signed-off-by: Yunjie Li <yunjieli@google.com>
Currently we're buffering the inflated bitmap entry in BasePackBitmapIndex
to optimize running time. However, this will use lots of memory during
the construction of the pack bitmap index file which may cause failure of
garbage collection.
The running time didn't increase significantly, if there's any increase,
after removing the buffering here. The report about usage of time/memory
will come in the next commit.
Change-Id: I874503ecc85714acab7ca62a6a7968c2dc0b56b3
Signed-off-by: Yunjie Li <yunjieli@google.com>
The convertedBitmaps serves for time-optimization purpose. But it's
actually not saving time much but using lots of memory. So remove the
field here to save memory.
Currently the remapper class is only used in the construction of the
bitmap index file. And during the preparation of the file, we're only
getting bitmaps from the remapper when finding objects accessible from
a commit, so bitmap associated with each commit will only be fetched once
and thus the convertedBitmaps would hardly be read, which means that it's
not saving time.
Change-Id: Ic942a8e485135fb177ec21d09282d08ca6646fdb
Signed-off-by: Yunjie Li <yunjieli@google.com>
Currently, the garbage collection is consistently failing for some large
repositories in the building bitmap phase, e.g.Linux-MSM project:
https://source.codeaurora.org/quic/la/kernel/msm-3.18
Historically, bitmap index creation happened in 3 phases:
1. Select the commits to which bitmaps should be attached.
2. Create all bitmaps for these commits, stored in uncompressed format
in the PackBitmapIndexBuilder.
3. Deltify the bitmaps and write them to disk.
We investigated the process. For phase 2 it's most efficient to create
bitmaps starting with oldest commit and moving to the newest commit,
because the newer commits are able to reuse the work for the old ones.
But for bitmap deltification in phase 3, it's better when a newer
commit's bitmap is the base, and the current disk format writes bitmaps
out for the newest commits first.
This change introduces a new collection to hold the deltified and
compressed representations of the bitmaps, keeping a smaller subset of
commits in the PackBitmapIndexBuilder to help make the bitmap index
creation more memory efficient.
And in this commit, we're setting DISTANCE_THRESHOLD to 0 in the
PackWriterBitmapPreparer, which means the garbage collection will not
have much behavoir change and will still use as much memory as before.
Change-Id: I6ec2c3e8dde11805af47874d67d33cf1ef83660e
Signed-off-by: Yunjie Li <yunjieli@google.com>
Add a new revwalk filter, AddToBitmapWithCachedFilter. This filter updates
a client-provided {@code BitmapBuilder} as a side effect of a revwalk.
Similar to {@code AddToBitmapFilter}, it short circuits the walk when it
encounters a commit which is included in the provided bitmap's BitmapIndex.
It also short circuits the walk if it encounters the client-provided
cached commit.
Change-Id: I62cb503016f4d3995d648d92b82baab7f93549a9
Signed-off-by: Yunjie Li <yunjieli@google.com>
Add some utility methods and a builder class for BitmapCommit class in
preparation for improving the memory footprint of GC's bitmap generation
phase.
Change-Id: Ice3d257fc26f3917a65a64eaf53b508b89043caa
Signed-off-by: Yunjie Li <yunjieli@google.com>
Move BitmapCommit from inside the PackWriterBitmapPreparer to a new
top-level class in preparation for improving the memory footprint of GC's
bitmap generation phase.
Change-Id: I4d404a5b3a34998b441d23105197f33d32d39670
Signed-off-by: Yunjie Li <yunjieli@google.com>
Make retrieveCompressed() a method of Bitmap interface to avoid type
casting and later reuse in improving the memory footprint of GC's bitmap
generation phase.
Change-Id: I098d85105cf17af845d43b8c71b4ca48b02fd7da
Signed-off-by: Yunjie Li <yunjieli@google.com>
When downloading LFS objects also accept response code 203 as successful
download. This response may be seen when downloading via a proxy.
Bug: 563022
Change-Id: Iee85fdb451b33369d08859872e5bfc2a67dffa6d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
By default, it will generate hostname using the aws region passed to the
constructor.
This will allow for easier testing, since you can just spin up a local
minio (or other s3-compatible storage service) instance and point the
application at that for the storage mechanism.
It will also allow for storing lfs objects on-prem.
Change-Id: I2566b1fcce58f3d306ddd23a8da702ef5a451c7b
Signed-off-by: Pat Long <pllong@arista.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Introduce an IterativeConnectivityChecker which runs a connectivity
check with a filtered set of references, and falls back to using the
full set of advertised references.
It uses references during first check attempt:
- References that are ancestors of an incoming commits (e.g., pushing
a commit onto an existing branch or pushing a new branch based on
another branch)
- Additional list of references we know client can be interested in
(e.g. list of open changes for Gerrit)
We tested it inside Google and it improves connectivity for certain
topologies. For example connectivity counts for
chromium.googlesource.com/chromium/src:
percentile_50: 1923 (was: 22777)
percentile_90: 23272 (was: 353003)
percentile_99: 345522 (was: 353435)
This saved ~2 seconds on every push to this repository.
Signed-off-by: Demetr Starshov <dstarshov@google.com>
Change-Id: I6543c2e10ed04622ca795b195665133e690d3b10
Moving transport related internal classes into dedicated subpackage in
o/e/j/internal package.
Signed-off-by: Demetr Starshov <dstarshov@google.com>
Change-Id: I21ed029d359f5f7d8298f102efbb4b1dcdf404ad
Fix NullPointerException occurring when calling
CheckoutCommand with forced == true option when
the branch isn't changed and there is deleted
uncommitted file.
Change-Id: I99bf1fc25e6889f07092320d7bc2772ec5d341b5
Signed-off-by: Nail Samatov <sanail@yandex.ru>
When applying a patch that contains renames or copies using ApplyCommand,
also apply all hunks that apply to the renamed or copied file.
Change-Id: I9f3fa4370458bd7c14beeb2e2b49e846d70203cb
Signed-off-by: Jack Wickham <jwickham@palantir.com>
Before this change, applying a patch will fail if the destination directory
doesn't exist; after, the necessary parent directories are created.
If renaming the file fails, the directories won't be deleted, so this change
isn't atomic. However, ApplyCommand is already not atomic - if one hunk fails
to apply, other hunks still get applied - so I don't think that is a blocker.
Change-Id: Iea36138b806d4e7012176615bcc673756a82f365
Signed-off-by: Jack Wickham <jwickham@palantir.com>
ObjectReachabilityChecker interface is the only public API. The
implementation is instantiated by ObjectWalk and doesn't need to be
visible outside the package.
Change-Id: I5b97bb98990cded637686bdc15c9655330b7780f
Signed-off-by: Ivan Frade <ifrade@google.com>
The bitmap-bassed object reachability checker, tries to find the objects
in the first starter, then adding the second starter... and so on. This
rewards passing the most popular refs first.
Order the refs with heads first, then tags, then others (e.g. changes)
for the object reachability checker. Using streams, delay also the
resolution of the ref to RevObject until necessary.
Change-Id: I9414b76754d7c0ffee1e2eeed6939895c8e92cbe
Signed-off-by: Ivan Frade <ifrade@google.com>
ObjectWalk#createObjectReachabilityChecker() returns the best
implementation for the repo. UploadPack can use the interface and fold
the with/without commits cases in one code path.
Change-Id: I857c11735d1d8e36c3ed8185ff11de8a62e86540
Signed-off-by: Ivan Frade <ifrade@google.com>
Christian Halstrick
Thomas Wolf
Yunjie Li
Matthias Sohn
David Pursehouse
David Ostrovsky
Terry Parker
Pat Long
Demetr Starshov
Nail Samatov
Jack Wickham
Ivan Frade
Michael Keppler