Ensure .gitmodules is loaded when accessing submodule name
This problem occurred when calling SubmoduleWalk#getModuleName if the
first submodule processed has a name and a path which do not match
SubmoduleWalk#getModuleName returned the module path instead of the
module name. In order to fix this SubmoduleWalk#getModuleName needs to
ensure that the modules config is loaded.
Bug: 565776
Change-Id: I36ce1fbc64c4849f9d8e39864b825c6e28d344f8
Signed-off-by: John Dallaway <john@dallaway.org.uk>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Add new performance logging to register events of type duration.
The proposed logging is similar to the performance logging
in OS Gerrit https://gerrit-review.googlesource.com/c/gerrit/+/225628:
a global Singleton (LoggingContext in Gerrit) is
collecting the performance logs in a thread-safe events list,
and at the end of the monitored command the list of events is
retrieved and written to a log, after which it is cleared.
What this patch does:
The main component is the Singleton (PerformanceLogContext), which
is used to collect the records (PerformanceLogRecord) in one place
(ThreadLocal eventsList) from anywhere using
PerformanceLogContext.getInstance().addEvent().
Reason why this change is needed:
The current monitoring in JGit has several issues:
1. git fetch and git push events are handled separately
(PackStatistics and ReceivedPackStatistics), with no unified way
of writing or reading the statistics.
2. PostUploadHook is only invoked on the event of sending the
pack, which means that the PackStatistics is not available for
the fetch requests that did not end with sending the pack
(negotiation requests).
3. The way the logs are created is different from the performance
log approach, so the long-running operations need to be collected
from both performance log (for JGit DFS overridden operations and
Gerrit operations) and gitlog (for JGit ones).
The proposed performance logging is going to solve the above
mentioned issues: it collects all of the performance logs in one
place, thus accounting for the commands that do not result in
sending a pack. The logs are compatible with the ones on Gerrit.
Moreover, the Singleton is accessible anywhere in the call stack,
which proved to be successful in other projects like Dapper
(https://research.google/pubs/pub36356/).
Signed-off-by: Alexa Panfil <alexapizza@google.com>
Change-Id: Iabfe667a3412d8a9db94aabb0f39b57f43469c41
This enables jgit to use any refs in the refs/ namespace when describing
commits.
Signed-off-by: Jason Yeo <jasonyeo88@gmail.com>
Change-Id: I1fa22d1c39c0e2f5e4c2938c9751d8556494ac26
Support "http.userAgent" and "http.extraHeader" from the git config
Validate the extra headers and log but otherwise ignore invalid
headers. An empty http.extraHeader starts the list afresh.
The http.userAgent is restricted to printable 7-bit ASCII, other
characters are replaced by '.'.
Moves a support method from the ssh.apache bundle to HttpSupport in
the main JGit bundle.
Bug:541500
Change-Id: Id2d8df12914e2cdbd936ff00dc824d8f871bd580
Signed-off-by: James Wynn <james@jameswynn.com>
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Reason why this change is needed:
Getting this metric will help estimate how much time will be saved once
the reachability checks get optimized
What this patch does:
Measure time spent by requestValidator.checkWants() in parseWants() and save
it in an instance of PackStatistics.Accumulator.
Signed-off-by: Alexa Panfil <alexapizza@google.com>
Change-Id: Id7fe4016f96549d9511a2c24052dad93cfbb31a4
When comparing git directory paths to check whether one is a prefix
of another, one must add a slash to avoid false prefix matches when
one directory name is a prefix of another. The path "audio" is not
a prefix of the path "audio-new", but would be a prefix of a path
"audio/new".
Bug: 566799
Change-Id: I6f671ca043c7c2c6044eb05a71dc8cca8d0ee040
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
ReceivePackStats: Add size and count of unnecessary pushed objects
Since there is no negotiation for a push, the client is probably sending
redundant objects and bytes which already exist in the server.
Add more metrics in the stats to quantify it. Duplicated size and number
to measure the size and the number of duplicated objects which should
not be pushed.
Change-Id: Iaacd4761ee9366a0a7ec4e26c508eff45c8744de
Signed-off-by: Yunjie Li <yunjieli@google.com>
DfsBundleWriter writes out the entire repository to a Git bundle file.
It packs all objects included in the packfile by concatenating all pack
files. This makes the bundle creation fast and cheap. Useful for backing
up a repository as-is.
Change-Id: Iee20e4b1ab45b2a178dde8c72093c0dd83f04805
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
ResolveMerger: do not content-merge gitlinks on del/mod conflicts
Previously ResolveMerger tried to make a fulltext merge entry in case
one of sides got deleted regardless of file mode. This is not
applicable for GITLINK type of entry. After this change it is
rendering appropriate merge result.
Signed-off-by: Demetr Starshov <dstarshov@google.com>
Change-Id: Ibdb4557bf8781bdb48bcee6529e37dc80582ed7e
ResolveMerger: choose OURS on gitlink when ignoreConflicts
Option ignoreConflicts is used when a caller want to create a virtual
commit and use it in a future merge (recursive merge) or show it on
UI (e.g. Gerrit). According to contract in case of ignoreConflicts
ResolveMerger should populate only stage 0 for entries with merge
conflicts as if there is no conflict. Current implementation breaks
this contract for cases when gitlink revision is ambiguous.
Therefore, always select 'ours' when we merge in ignoreConflicts mode.
This will satisfy the contract contract, so recursive merge can
succeed, however it is an arbitrary decision, so it is not guaranteed
to select best GITLINK in all cases.
GITLINK merging is a special case of recursive merge because of
limitations of GITLINK type of entry. It can't contain more than 1 sha-1
so jgit can't write merge conflicts in place like it can with a blob.
Ideally we could signal the conflict with a special value (like
'0000...'), but that must be supported by all tooling (git fsck, c-git)."
Signed-off-by: Demetr Starshov <dstarshov@google.com>
Change-Id: Id4e9bebc8e828f7a1ef9f83259159137df477d89
ResolveMerger: Adding test cases for GITLINK merge
Add test cases which cover content-merge resolve logic.
Git clients try to agressively merge blobs by content, but GITLINK types
of entries can't be merged with each other or with blobs. This change
ensures all possible permutations which can trigger blob and GITLINK
content merge are covered.
Signed-off-by: Demetr Starshov <dstarshov@google.com>
Change-Id: I7e83a28a14d4d2f9e0ba2b1cffbf3224fb7f3fef
Fix possible NegativeArraySizeException in PackIndexV1
Due to an integer overflow bug, the current "Index file is too large
for jgit" check did not work properly and subsequently a
NegativeArraySizeException was raised.
Change-Id: I2736efb28987c29e56bc946563b7fa781898a94a
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com>
Keep line endings for text files committed with CR/LF on text=auto
Git never converts line endings if the version in the repository is a
text file with CR/LF and text=auto. See [1]: "When the file has been
committed with CRLF, no conversion is done."
Because the sentence just before is about converting line endings on
check-in, I had understood that in commit 60cf85a [2] to mean that no
conversion on check-in was to be done. However, as bug 565048 and a
code inspection of the C git code showed it really means no conversion
is done on check-in *or check-out*.
If the text attribute is not set but core.autocrlf = true, this is
the same as text=auto eol=crlf. C git does not convert on check-out
even on text=auto eol=lf if the index version is a text file with
CR/LF.
For check-in, one has to look at the intended target, which is done
in WorkingTreeIterator since commit 60cf85a. For check-out, it can
be done by looking at the source and can thus be done in the
AutoLFOutputStream.
Additionally, provide a constructor for AutoLFInputStream to do
the same; for cases where the equivalent of a check-out is done via
an input stream obtained from a blob. (EGit does that in its
GitBlobStorage for the Eclipse compare framework; it's more efficient
than using a TemporaryBuffer and DirCacheCheckout.getContent(), and
it avoids the need for a temporary file.)
Adapt existing tests, and add new checkout and merge tests to verify
the resulting files have the correct line endings.
EGit's GitBlobStorage will need to call the new version of
EolStreamTypeUtil.wrapInputStream().
[1] https://git-scm.com/docs/gitattributes#Documentation/gitattributes.txt-Settostringvalueauto
[2] https://git.eclipse.org/r/c/jgit/jgit/+/127324
Bug: 565048
Change-Id: If1282ef43e2abd00263541bd10a01fe1f5c619fc
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Index format version 4 was introduced in C git in 2012. It's about
time that JGit can deal with it.
Version 4 added prefix path compression. Instead of writing the full
path for each index entry to disk, only the difference to the previous
entry's path is written: a variable-encoded int telling how many bytes
to remove from the previous entry's path to get the common prefix,
followed by the new suffix.
Also, cache entries in a version 4 index are not padded anymore.
Internally, version 3 and version 4 index entries are identical; it's
only the stored format that changes.
Implement this path compression, and make sure we write an index file
that we read previously in the same format. (Only changing from version
2 to version 3 if there are extended flags.)
Add support for the "feature.manyFiles" and the "index.version" git
configs, and honor them when writing a new index file.
Add tests, including a compatibility test that verifies that JGit can
read a version 4 index generated by C git and write an identical
version 4 index.
Bug: 565774
Change-Id: Id83241cf009e50f950eb42f8d56b834fb47da1ed
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Do not send empty blob in response to blob:none filter
If I create a repository containing an empty file and clone it
with
git clone --no-checkout --filter=blob:none \
https://url/of/repository
then I would expect no blobs to be transferred over the wire. Alas,
JGit rewrites filter=blob:none to filter=blob:limit=0, so if the
repository contains an empty file then the empty blob gets
transferred.
Fix it by teaching JGit about filters based on object type to
complement the existing filters based on object size. This prepares
us for other future filters such as object:none.
In particular, this means we do not need to look up the size of the
filtered blobs, which should speed up clones. Noticed by Anna
Pologova and Terry Parker.
Change-Id: Id4b234921a190c108d8be2c87f54dcbfa811602a
Signed-off-by: Jonathan Nieder <jrn@google.com>
Teach the FilterSpec serialization code about tree filters so they can
be communicated over the wire and understood by the server.
While we're here, harden the FilterSpec serialization code to throw
IllegalStateException if we encounter a FilterSpec that cannot be
expressed as a "filter" line. The only public API for creating a
Filterspec is to pass in a "filter" line to be parsed, so these should
not appear in practice.
Change-Id: I9664844059ffbc9c36eb829e2d860f198b9403a0
Signed-off-by: Jonathan Nieder <jrn@google.com>
DiffFormatter: correctly deal with tracked files in ignored folders
In JGit 5.0, the FileTreeIterator was changed to skip ignored folders
by default. To catch tracked files inside ignored folders, the tree
walk needs to have a DirCacheIterator, and the FileTreeIterator has
to know about that DirCacheIterator via setDirCacheIterator(). (Or
the optimization has to be switched off explicitly via
setWalkIgnoredDirectories(true).)
Skipping ignored directories is an important optimization in some
cases, for instance in node.js/npm projects, where we'd otherwise
traverse the whole huge and deep hierarchy of the typically ignored
node_modules folder.
While all uses of WorkingTreeIterator in JGit had been adapted,
DiffFormatter was forgotten. To make it work correctly (again) also
for such cases, make it set up a WorkingTreeeIterator automatically,
and make sure the WorkingTreeSource can find such files, too. Also
pass the repository to the TreeWalks used inside the DiffFormatter
to pick up the correct attributes, filters, and line-ending settings.
Bug: 565081
Change-Id: Ie88ac81166dc396ba28b83313964c1712b6ca199
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Make sure we don't produce a spurious empty line at the end.
Bug: 564428
Change-Id: Ib991d93fbd052baca65d32a7842f07f9ddeb8130
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Improve error message when receive.maxCommandBytes is exceeded
The message "Too many commands" implies there is a hard limit on the
number of commands, which isn't the case. The limit is on the total
size of the received data, as explained in change I84317d396 which
introduced the configuration setting receive.maxCommandBytes:
shorter reference names allow for more commands, longer reference
names permit fewer commands per batch.
Change the message to:
Commands size exceeds limit defined in receive.maxCommandBytes
Change-Id: I678b78f919b2fec8f8058f3403f2541c26a5d00e
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
DiffFormatterTest: Add a test to confirm the default rename detection settings
Add a test that confirms:
- No rename detector is initialized by default
- Rename detector is initialized after calling setDetectRenames(true)
- Rename limit and rename score have the default values 400 and
60, respectively. Note that there are no constants for these values
so the test hard codes them.
Change-Id: I327e2b348a40ef67d8a184e5ab09f4e9ab573e1c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
MergedReftable: Include the last reftable in determining minUpdateIndex
MergedReftable ignores the last reftable in the stack while calculating the
minUpdateIndex.
Update the loop indices to include all reftables in the minUpdateIndex
calculation, while skipping position 0 as it is read outside the loop.
Change-Id: I12d3e714581e93d178be79c02408a67ab2bd838e
Signed-off-by: Minh Thai <mthai@google.com>
ApplyCommand: use context lines to determine hunk location
If a hunk does not apply at the position stated in the hunk header
try to determine its position using the old lines (context and
deleted lines).
This is still a far cry from a full git apply: it doesn't do binary
patches, it doesn't handle git's whitespace options, and it's perhaps
not the fastest on big patches. C git hashes the lines and uses these
hashes to speed up matching hunks (and to do its whitespace magic).
Bug: 562348
Change-Id: Id0796bba059d84e648769d5896f497fde0b787dd
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Motivation: JSch serves as 'default' implementations of the SSH
transport. If a client application does not use it then there is no need
to pull in this dependency.
Move the classes depending on JSch to an OSGi fragment extending the
org.eclipse.jgit bundle and keep them in the same package as before
since moving them to another package would break API. Defer moving them
to a separate package to the next major release.
Add a new feature org.eclipse.jgit.ssh.jsch feature to enable
installation. With that users can now decide which of the ssh client
integrations (JCraft JSch or Apache Mina SSHD) they want to install.
We will remove the JCraft JSch integration in a later step due to the
reasons discussed in bug 520927.
Bug: 553625
Change-Id: I5979c8a9dbbe878a2e8ac0fbfde7230059d74dc2
Also-by: Michael Dardis <git@md-5.net>
Signed-off-by: Michael Dardis <git@md-5.net>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
Motivation: BouncyCastle serves as 'default' implementation of
the GPG Signer. If a client application does not use it there is no need
to pull in this dependency, especially since BouncyCastle is a large
library.
Move the classes depending on BouncyCastle to an OSGi fragment extending
the org.eclipse.jgit bundle. They are moved to a distinct internal
package in order to avoid split packages. This doesn't break public API
since these classes were already in an internal package before this
change.
Add a new feature org.eclipse.jgit.gpg.bc to enable installation. With
that users can now decide if they want to install it.
Attempts to sign a commit if org.eclipse.jgit.gpg.bc isn't available
will result in ServiceUnavailableException being thrown.
Bug: 559106
Change-Id: I42fd6c00002e17aa9a7be96ae434b538ea86ccf8
Also-by: Michael Dardis <git@md-5.net>
Signed-off-by: Michael Dardis <git@md-5.net>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
RawTextComparator.WS_IGNORE_CHANGE must not compare whitespace
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>
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>
Attributes: fix handling of text=auto in combination with eol
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>
PackBitmapIndex: Move BitmapCommit to a top-level class
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>
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
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>
Apply hunks when renaming or copying from patch files
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>
Create parent directories when renaming a file in ApplyCommand
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>
Extract ObjectReachabilityChecker interface from the walk-based
implementation, to add a bitmapped based implementation later.
Refactor the test case to use it for both implementations.
Change-Id: Iaac7c6b037723811956ac22625f27d3b4d742139
Signed-off-by: Ivan Frade <ifrade@google.com>
Preparing the code to optimize the bitmap-based object reachability
checker. We are mirroring first the commit reachability checker
structure (interface + 2 implementations).
Move the walk-base reachability checker to its own class.
This class is public at the moment. Later ObjectWalk will return an
interface and this implementation will be package-private.
Change-Id: Ifac70094e1af137291c3607d95e689992f814b26
Signed-off-by: Ivan Frade <ifrade@google.com>
UploadPack: Clear advertised ref map after negotiation
After negotiation phase of a fetch, the advertised ref map is no longer used and
can be safely cleared. For >1GiB repos object selection and packfile writing may
take 10s of minutes. For the chromium.googlesource.com/chromium/src repo, this
advertised ref map is >400MiB. Returning this memory to the Java heap is a major
scalability win.
Change-Id: I00d453c5ef47630c21f199e333e1cfcf47b7e92a
Signed-off-by: Minh Thai <mthai@google.com>
Scan through all merged reftables for max/min update indices
Since reftables might have update index ranges that are overlapped.
Change-Id: I8f8215b99a0a978d4dd0155dbaf33e5e06ea8202
Signed-off-by: Minh Thai <mthai@google.com>
(cherry picked from commit 06748c205c)
Ensure files are writable before trying to delete them.
Bug: 408846
Change-Id: I930a547594bba853c33634ae54bd64d236afade3
Signed-off-by: Alexander Nittka <alex@nittka.de>
FS.runInShell(): handle quoted filters and hooksPath containing blanks
Revert commit 2323d7a. Using $0 in the shell command call results in
the command string being taken literally. That was introduced to fix
a problem with backslashes, but is actually not correct.
First, the problem with backslashes occurred only on Win32/Cygwin,
and has been properly fixed in commit 6f268f8.
Second, this is used only for hooks (which don't have backslashes in
their names) and filter commands from the git config, where the user
is responsible for properly quoting or escaping such that the commands
work.
Third, using $0 actually breaks correctly quoted filter commands
like in the bug report. The shell really takes the command literally,
and then doesn't find the command because of quotes.
So revert this change.
At the same time there's a related problem with hooks. If the path to
the hook contains blanks, runInShell() would also fail to find the
hook. In this case, the command doesn't come from user input but is
just a Java File object with an absolute path containing blanks. (Can
occur if core.hooksPath points to such a path with blanks, or if the
repository has such a path.)
The path to the hook as obtained from the file system must be quoted.
Add a test for a hook path with a blank.
This reverts commit 2323d7a1ef.
Bug: 561666
Change-Id: I4d7df13e6c9b245fe1706e191e4316685a8a9d59
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Handle non-normalized index also for executable files
Commit 60cf85a4 corrected the handling of check-in for files where
the index version is non-normalized, i.e., contains CR-LF line endings.
However, it did so only for regular files, not executable files.
Bug: 561438
Change-Id: I372cc990c5efeb00315460f36459c0652d5d1e77
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Scan through all merged reftables for max/min update indices
Since reftables might have update index ranges that are overlapped.
Change-Id: I8f8215b99a0a978d4dd0155dbaf33e5e06ea8202
Signed-off-by: Minh Thai <mthai@google.com>
The recursive merge strategy builds a virtual ancestor merging
recursively the common bases (when more than one) between the
want-to-merge commits. While building this virtual ancestor, content
conflicts are ignored, but current code doesn't do so when a file is
removed.
This was spotted in [1], for example. Merging two commits to build the
virtual ancestor bumped into a conflict (modified in one side, deleted
in the other) that stopped the process.
Follow the "spec" and in case of conflict leave the unmerged content in
the index and working trees.
[1] https://android-review.googlesource.com/c/kernel/common/+/1228962
Change-Id: Ife9c32ae3ac3a87d3660fa1242e07854b65169d5
Signed-off-by: Ivan Frade <ifrade@google.com>
Allow explicitly setting the tag option for the remote configuration
when cloning a repository.
Bug: 561021
Change-Id: Iac43268a2bb231ae7599c3255bf555883d34fa32
Signed-off-by: Alexander Nittka <alex@nittka.de>
John Dallaway
Alexa Panfil
Jason Yeo
Thomas Wolf
Matthias Sohn
James Wynn
Yunjie Li
Masaya Suzuki
Demetr Starshov
Marc Strapetz
Jonathan Nieder
David Pursehouse
Minh Thai
Nail Samatov
Jack Wickham
Ivan Frade
Konrad Windszus
Alexander Nittka