Matthias Sohn [Fri, 3 Dec 2021 21:45:05 +0000 (22:45 +0100)]
Update maven plugins
- build-helper-maven-plugin to 3.2.0
- jacoco-maven-plugin to 0.8.7
- maven-antrun-plugin to 3.0.0
- maven-dependency-plugin to 3.2.0
- maven-enforcer-plugin to 3.0.0
- maven-jar-plugin to 3.2.0
- maven-javadoc-plugin to 3.3.1
- maven-jxr-plugin to 3.1.1
- maven-pmd-plugin to 3.15.0
- maven-project-info-reports-plugin to 3.1.2
- maven-resources-plugin to 3.2.0
- maven-shade-plugin to 3.2.4
- maven-site-plugin to 3.9.1
- maven-source-plugin to 3.2.1
- maven-surefire-plugin to 3.0.0-M5
- spotbugs-maven-plugin to 4.3.0
- tycho and tycho-extras to 1.7.0
RefDirectory.scanRef: Re-use file existence check done in snapshot creation
Return immediately in scanRef if the loose ref was identified as
missing when a snapshot was attempted for the ref. This will help
performance of scanRef when the ref is packed but has a corresponding
empty dir in 'refs/'.
For example, consider the case where we create 50k sharded refs in
a new namespace called 'new-refs' using an atomic 'BatchRefUpdate'.
The refs are named like 'refs/new-refs/01/1/1', 'refs/new-refs/01/1/2',
'refs/new-refs/01/1/3' and so on. After the refs are created, the
'new-refs' namespace looks like below:
$ find refs/new-refs -type f | wc -l
0
$ find refs/new-refs -type d | wc -l
5101
At this point, an 'exactRef' call on each of the 50k refs without
this change takes ~2.5s, where as with this change it takes ~1.5s.
FileSnapshot: Lazy load file store attributes cache
Doing a getFileStoreAttributes call even when the file doesn't
exist is unnecessary. This call is particularly slow on some
filesystems. Instead, do it only when the file exists and load
the appropriate cache.
This update can help speed up RefDirectory.exactRef when the ref
is packed, but has a corresponding empty dir for it under 'refs/'.
This scenario can happen when an atomic 'BatchRefUpdate' creates
new sharded refs.
For example, consider the case where we create 50k sharded refs in
a new namespace called 'new-refs' using an atomic 'BatchRefUpdate'.
The refs are named like 'refs/new-refs/01/1/1', 'refs/new-refs/01/1/2',
'refs/new-refs/01/1/3' and so on. After the refs are created, the
'new-refs' namespace looks like below:
$ find refs/new-refs -type f | wc -l
0
$ find refs/new-refs -type d | wc -l
5101
At this point, an 'exactRef' call on each of the 50k refs without
this change takes ~30s, where as with this change it takes ~2.5s.
Thomas Wolf [Sun, 28 Nov 2021 10:42:20 +0000 (11:42 +0100)]
FS: debug logging only if system config file cannot be found
The command 'git config --system --show-origin --list -z' fails if
the system config doesn't exist. Use debug logging instead of a
warning for failures of that command. Typically the user cannot do
anything about it anyway, and JGit will just work without system
config.
Bug: 577492
Change-Id: If628ab376182183aea57a385c169e144d371bbb2 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Thomas Wolf [Tue, 19 Oct 2021 07:07:14 +0000 (09:07 +0200)]
Set JSch global config values only if not set already
Bug: 576604
Change-Id: I04415f07bf2023bc8435c097d1d3c65221d563f1 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
(cherry picked from commit f8b0c00e6a8f5628babff6dd37254a21589b6e44)
Thomas Wolf [Fri, 19 Nov 2021 18:15:46 +0000 (19:15 +0100)]
Better git system config finding
We've used "GIT_EDITOR=edit git config --system --edit" to determine
the location of the git system config for a long time. But git 2.34.0
always expects this command to have a tty, but there isn't one when
called from Java. If there isn't one, the Java process may get a
SIGTTOU from the child process and hangs.
Arguably it's a bug in C git 2.34.0 to unconditionally assume there
was a tty. But JGit needs a fix *now*, otherwise any application using
JGit will lock up if git 2.34.0 is installed on the machine.
Therefore, use a different approach if the C git found is 2.8.0 or
newer: parse the output of
git config --system --show-origin --list -z
"--show-origin" exists since git 2.8.0; it prefixes the values with
the file name of the config file they come from, which is the system
config file for this command. (This works even if the first item in
the system config is an include.)
Bug: 577358
Change-Id: I3ef170ed3f488f63c3501468303119319b03575d Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
(cherry picked from commit 9446e62733da5005be1d5182f0dce759a3052d4a)
Matthias Sohn [Fri, 15 Oct 2021 20:58:21 +0000 (22:58 +0200)]
Merge branch 'stable-5.12' into stable-5.13
* stable-5.12:
Fix missing peel-part in lsRefsV2 for loose annotated tags
Fix RevWalk.getMergedInto() ignores annotated tags
Optimize RevWalk.getMergedInto()
reftable: drop code for truncated reads
reftable: pass on invalid object ID in conversion
Update eclipse-jarsigner-plugin to 1.3.2
Fix running benchmarks from bazel
Update eclipse-jarsigner-plugin to 1.3.2
Matthias Sohn [Fri, 15 Oct 2021 20:48:01 +0000 (22:48 +0200)]
Merge branch 'stable-5.11' into stable-5.12
* stable-5.11:
Fix missing peel-part in lsRefsV2 for loose annotated tags
reftable: drop code for truncated reads
reftable: pass on invalid object ID in conversion
Update eclipse-jarsigner-plugin to 1.3.2
Fix running benchmarks from bazel
Update eclipse-jarsigner-plugin to 1.3.2
Matthias Sohn [Fri, 15 Oct 2021 20:45:18 +0000 (22:45 +0200)]
Merge branch 'stable-5.10' into stable-5.11
* stable-5.10:
Fix missing peel-part in lsRefsV2 for loose annotated tags
reftable: drop code for truncated reads
reftable: pass on invalid object ID in conversion
Update eclipse-jarsigner-plugin to 1.3.2
Fix running benchmarks from bazel
Update eclipse-jarsigner-plugin to 1.3.2
Matthias Sohn [Fri, 15 Oct 2021 20:32:00 +0000 (22:32 +0200)]
Merge branch 'stable-5.9' into stable-5.10
* stable-5.9:
Fix missing peel-part in lsRefsV2 for loose annotated tags
reftable: drop code for truncated reads
reftable: pass on invalid object ID in conversion
Update eclipse-jarsigner-plugin to 1.3.2
Fix running benchmarks from bazel
Update eclipse-jarsigner-plugin to 1.3.2
Unfortunately, the existing UploadPackTest didn't reveal this issue
although it provided the test case needed to do so: testV2LsRefsPeel.
This is because The UploadPackTest uses InMemoryRepository which
internally uses Dfs* implementations. The issue is only reproducible
when using the FileRepository.
It is a non-trivial task to refactor the UploadPackTest to work against
both InMemoryRepository and FileRepository and this change is not trying
to do that. This change creates a new test:
UploadPackLsRefsFileRepositoryTest and copies the necesssary code from
the UploadPackTest.
Find out which branches is 2 merged into:
After we calculated that master contains 2, we can mark 6 as TEMP_MARK
to avoid unwanted walks.
When we want to figure out if 2 is merge into the topic, the traversal
path would be [7, 6] instead of [7, 6, 5, 3, 2].
Test:
This change can significantly improve performance for tags.
On a copy of the Linux repository, the command 'git tag --contains
<commit>' had the following performance improvement:
The current version ignores tags, even though the tag is a type of
the ref.
Follow-up commits I'll fix it.
Change-Id: Ie6295ca4d16070499912af462239e679a97cce47 Signed-off-by: kylezhao <kylezhao@tencent.com> Reviewed-by: Christian Halstrick <christian.halstrick@sap.com> Reviewed-by: Martin Fick <mfick@codeaurora.org>
The reftable format is a block based format, but allows for variably
sized blocks. This obviously happens for reflog blocks (which are zlib
compressed), but is also accepted for index blocks: In the spec, this
is motivated as
To achieve constant O(1) disk seeks for lookups the index must be
a single level, which is permitted to exceed the file's
configured block size, but not the format's max block size of
15.99 MiB.
Hence, when parsing a block, one cannot be sure of its exact size:
after reading a default-size block (eg. 4kb), the block header may
state that the block is in fact larger.
Before, the code would mark the block as `truncated`, noting
// Its OK during sequential scan for an index block to have been
// partially read and be truncated in-memory. This happens when
// the index block is larger than the file's blockSize. Caller
// will break out of its scan loop once it sees the blockType.
This looks like either
* a remnant of never-implemented functionality. There is no reason to
ever sequentially scan an index block.
* alluding to sequential scan of the data blocks before the index
blocks (eg. scanning refs, which ends when we find the first ref index
block, and we can then ignore the index block).
This comment is followed by code that populates the
restartTbl/restartCnt fields relative to the (possibly truncated)
buffer. If the buffer is truncated, this essentially reads garbage,
leading to OOB array access when using the index block.
Fix this by dropping the truncated logic and issuing a second read if
the first read was short.
Add a test.
We have never observed this failure scenario at Google. We use 64kb
blocksize, which requires us to need fewer index entries. The reftable
spec mentions an Android repo of size 36M. With 64kb blocks, that's
just 562 index entries. Even with historical growth, we are long from
requiring an index whose size exceeds a single block.
When adding the analogous test for seeking refs, there was no failure.
This points to another possibility which is that the code tries to
avoid writing large index blocks for refs.
Matthias Sohn [Wed, 1 Sep 2021 14:31:13 +0000 (16:31 +0200)]
Merge branch 'master' into stable-5.13
* master:
GitServlet: allow to override default error handlers
Silence API error for new interface method ProtocolV2Hook#onObjectInfo
transport: add object-info capability
Ignore IllegalStateException if JVM is already shutting down
Update orbit to R20210825222808 for 2021-09
RevWalk: getMergedInto's result is wrong on the second call
Antonio Barone [Wed, 1 Sep 2021 10:04:07 +0000 (12:04 +0200)]
GitServlet: allow to override default error handlers
GitServlet delegates repository access over HTTP to the GitFilter
servlet.
GitServlet, in turn, can be extended by jgit consumers to provide custom
logic when handling such operations.
This is the case, for example, with Gerrit Code Review, which provides
custom behavior with a GitOverHttpServlet [1].
Among possible customizations, the ability of specifying a custom error
handler for UploadPack and ReceivePack was already introduced in
GitFilter by Idd3b87d6b and I9c708aa5a2, respectively.
However the `setUploadPackErrorHandler` and `setReceivePackErrorHandler`
methods were never added to the GitServlet.
Expose the `setUploadPackErrorHandler` and `setReceivePackErrorHandler`
methods to the GitServlet, so that consumers of the jgit library might
specify custom error handlers.
Sometimes it is useful to obtain metadata associated with an object
without the need to first download it locally. This is specially useful
when using partial clones.
This change implements the object-info capability that allows clients to
query the remote server for object metadata (currently only size). This
is a backport of the same capability that was recently added to the Git
project a2ba162cda (object-info: support for retrieving object info,
2021-04-20).
Signed-off-by: Bruno Albuquerque <bga@google.com>
Change-Id: I4dc9828e1c247f08b0976b8810be92d124366165
Matthias Sohn [Thu, 12 Aug 2021 07:28:04 +0000 (09:28 +0200)]
Ignore IllegalStateException if JVM is already shutting down
Trying to register/unregister a shutdown hook when the JVM is already in
shutdown throws an IllegalStateException. Ignore this exception since we
can't do anything about it.
Thomas Wolf [Tue, 10 Aug 2021 21:26:42 +0000 (23:26 +0200)]
[gpg] Better GPG home directory determination
GPG can use customized directories instead of the standard ~/.gnupg or
%APPDATA%\gnupg directories:
* Environment variable GNUPGHOME can define the location.
* On Windows, a registry key may define the location (but this is
deprecated).
* Portable installations may use a directory defined via a file
"gpgconf.ctl".
* GPG programs may take a --homedir command-line argument, which
overrides anything.
Implement handling of environment variable GNUPGHOME. The other ways of
GPG to get its home directory are outside the reach of JGit. Provide a
system property "jgit.gpg.home" that the user can set in such cases.
Do tilde replacement for the system property and for GNUPGHOME.
Note that on VMS, the default directory would be ~/gnupg (without dot).
This is not accounted for, but a user on VMS could now use either the
system property or GNUPGHOME to direct JGit to the right directory.
Bug: 575327
Change-Id: Id5ea04a85d58dba0c0df7a705777630d36042467 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
DFS block cache: Refactor to enable parallel index loading
With this change bitmap index creation is not blocked on index and
reverse index full initialization in DfsPackFile. Now bitmap index and index could be
read from storage in parallel in separate threads.
Update PackBitmapIndexV1 constructor to get packIndex and reverseIndex
suppliers instead of actual objects. Inner class IdxPositionBitmap was added to initialize pack objects after bitmap
index is fully read from storage. Update DfsPackFile and PackBitmapIndex
accordingly.
Thomas Wolf [Thu, 29 Jul 2021 11:12:40 +0000 (13:12 +0200)]
Merge branch 'stable-5.12'
* stable-5.12:
[test] Create keystore with the keytool of the running JDK
Fix garbage collection failing to delete pack file
ReachabilityCheckerTestCase: fix reachable from self test case
Change-Id: I4b54f4850819736144edb784617ee902f491ffd6 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
projects / jgit.git / log