Right now, PackParser relies on the object count from the pack header.
However, when creating Dfs INSERT packs, the object count is not known
at the beginning of the operation. And when we append the base to a
RECEIVE pack, we can't modify the pack header for object count in most
Dfs implementations.
Make it possible to tell PackParser the expected object count by adding
a setter for expectedObjectCount, implementation can overwrite the
object count in onPackHeader function.
Change-Id: I646ca33ab2b843de84edc287abfb65803a56a927
Signed-off-by: Zhen Chen <czhen@google.com>
Callers may estimate the size, and their estimate may be zero. Silently
allow this, rather than throwing IndexOutOfBoundsException later during
add.
Change-Id: Ife236f9f4ce469c57b18e76cf4fad6feb52cb2b0
Inline the old addRefToPrefixes, since it was just a glorified addAll.
Split getPrefixes into a variant, addPrefixesTo, that doesn't allocate a
small Collection on every invocation. Use this in the tight loop of
getTakenPrefixes.
Change-Id: I25cc7feef0c8e312820d85b7ed48559da49b83d2
If a block is missing from the block cache, open the pack stream,
retain the ReadableChannel, and turn on read-ahead. This should help
to load a medium sized pack into a cold cache more quickly from a
slower IO stream, as the pack is scanned sequentially and missing
blocks are more likely to be available through the read-ahead.
Change-Id: I3300d936b9299be6d9eb642992df7c04bb439cde
The merger is now able to react to the use of the merge attribute.
The value unset and the custom value 'binary' are handled (-merge
and merge=binary)
Since the specification of the merge attribute states that when the
attribute is unset, ours version must be kept in case of a conflict, we
don't overwrite the file but keep the local version.
Bug: 517128
Change-Id: Ib5fbf17bdaf727bc5d0e106ce88f2620d9f87a6f
Signed-off-by: Mathieu Cartaud <mathieu.cartaud@obeo.fr>
Add a test for parsing fsck config options and expose FsckMode enum
These config options allow overriding the message type (error, warn or
ignore) of a specific message ID such as missingEmail.
The supported fsck message IDs are defined in ObjectChecker.ErrorType.
Since TransferConfig.FsckMode wasn't public parsing fsck configuration
options like e.g. fsck.missingEmail=ignore failed with an
IllegalAccessException. Fix this by declaring this enum public.
Change-Id: I3f41ff7a76a846250a63ce92a9fd111eb347269f
Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Fix bug in multiple tag handling on DescribeCommand
In the case of multiple tags on the same commit, jgit previously
only ever looked at the last of those tags; git behaviour is to
return the first tag (or first matching one if --match is
specified).
Bug: 518377
Change-Id: I3b6b58ad9f8aa3879ae35b84542b7bddc74a27d6
Signed-off-by: Oliver Lockwood <oliver.lockwood@cantab.net>
A `match()` method has been added to the DescribeCommand, allowing
users to specify one or more `glob(7)` matchers as per Git convention.
Bug: 518377
Change-Id: Ib4cf34ce58128eed0334adf6c4a052dbea62c601
Signed-off-by: Oliver Lockwood <oliver.lockwood@cantab.net>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
When the configuration entry 'pull.ff' exists the merge of the pull will
use the value as fast forward option.
Bug: 474174
Change-Id: Ic8db2f00095ed81528667b064ff523911e6c122e
Signed-off-by: Mattias Neuling <neuling@dakosy.de>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Fetch/PullCommand: Improve Javadoc of setRecurseSubmodules
Annotate the `recurse` parameter as @Nullable and expand the
Javadoc to clarify the precedence of options.
Change-Id: I7aee800cdbf8243133a0d353ef79b97b67ce011e
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
- mark parameter to be nullable
- explain that we fallback to value of merge.ff if set to null and to
--ff if also not configured there
Change-Id: Id077763b95195d21543ac637f9939a6d4179e982
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If set, "singlePack" will create a single GC pack file for all
objects reachable from refs/*. If not set, the GC pack will contain
object reachable from refs/heads/* and refs/tags/*, and the GC_REST
pack will contain all other reachable objects.
Change-Id: I56bcb6a9da2c10a0909c2f940c025db6f3acebcb
Signed-off-by: Terry Parker <tparker@google.com>
Allow to use an external ExecutorService for background auto-gc
If set use the external executor, otherwise use JGit's own simple
WorkQueue. Move WorkQueue to an internal package so we can reuse it
without exposing it in the public API.
Change-Id: I060d62ffd6692362a88b4bf13ee07b0dc857abe9
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Fetch: Add --recurse-submodules and --no-recurse-submodules options
Add options to control recursion into submodules on fetch.
Add a callback interface on FetchCommand, to allow Fetch to display
an update "Fetching submodule XYZ" for each submodule.
Change-Id: Id805044b57289ee0f384b434aba1dbd2fd317e5b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
SubmoduleUpdateCommand#setCallback should return 'this'
The other methods in this class follow the builder pattern, and
return 'this', allowing multiple method calls to be chained in a
single statement.
Update the setCallback method to do the same.
Change-Id: I4ddaacd6d50601f47f61eb6be8b62c8d59cce062
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Defer object collision check until pack stream is done
Object collision check requires read from local storage which may be
slow. We already delay this check for blobs, this change will also delay
other objects until the pack stream is closed. In this way, there is no
readCurs call until the pack stream is closed.
Change-Id: I3c8c4720dd19a5f64f8c7ddf07d815ed6877b6aa
Signed-off-by: Zhen Chen <czhen@google.com>
The other methods in this class follow the builder pattern, and
return 'this', allowing multiple method calls to be chained in a
single statement.
Update the setCallback method to do the same.
Change-Id: I0366d28bf66ba47f08ee7eee636d613c9fe079f5
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
ArchiveCommand: Create prefix entry with commit time
The cgit archive command creates a prefix (root) directory entry
in the archive file. That entry's time is set to the commit time.
This patch makes jgit's behavior consistent with with cgit:
prefix: hoge/ -> creates prefix directory "hoge/" entry.
prefix: hoge//// -> creates prefix directory "hoge/" entry.
prefix: hoge/foo -> does not create prefix directory entry, but for
each file/directory entry, prefix is added.
Change-Id: I2610e40ce37972c5f7456fdca6337e7fb07176e5
Signed-off-by: Yasuhiro Takagi <ytakagi@bea.hi-ho.ne.jp>
When running an automatic GC on a FileRepository, when the caller
passes a NullProgressMonitor, run the GC in a background thread. Use a
thread pool of size 1 to limit the number of background threads spawned
for background gc in the same application. In the next minor release we
can make the thread pool configurable.
In some cases, the auto GC limit is lower than the true number of
unreachable loose objects, so auto GC will run after every (e.g) fetch
operation. This leads to the appearance of poor fetch performance.
Since these GCs will never make progress (until either the objects
become referenced, or the two week timeout expires), blocking on them
simply reduces throughput.
In the event that an auto GC would make progress, it's still OK if it
runs in the background. The progress will still happen.
This matches the behavior of regular git.
Git (and now jgit) uses the lock file for gc.log to prevent simultaneous
runs of background gc. Further, it writes errors to gc.log, and won't
run background gc if that file is present and recent. If gc.log is too
old (according to the config gc.logexpiry), it will be ignored.
Change-Id: I3870cadb4a0a6763feff252e6eaef99f4aa8d0df
Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Allow fetch to accept a SHA-1 on the left hand side of a RefSpec,
enabling callers to pass a specific SHA-1 they want that may not have
been advertised by the remote repository. This can be passed along to
the network protocol to be sent in a "want" line.
Rest of the plumbing only cares about the ObjectId of the Ref in
the askFor map, so make up a fake name using ObjectId.name() to
pass the desired ObjectId into the network code.
Change-Id: I620a189f3de005c403aa68b7d0442d6aa94e6056
Fix null return from FS.readPipe when command fails to launch
When a command invoked from readPipe fails to launch (i.e. the exec call
fails due to a missing command executable), Process.start() throws,
which gets caught by the generic IOException handler, resulting in a
null return. This change detects this case and rethrows a
CommandFailedException instead.
Additionally, this change uses /bin/sh instead of bash for its posix
command failure test, to accomodate building in environments where bash
is unavailable.
Change-Id: Ifae51e457e5718be610c0a0914b18fe35ea7b008
Signed-off-by: Bryan Donlan <bdonlan@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Compute how much disk IO a DfsReader is performing, and how long the
sum of those operations took on this reader instance. Implementations
of DFS and interested applications can get the stats by calling the
new DfsReader.getIoStats() method at or after close().
Change-Id: If585741301f29182617933d6406d4a70497f2ca7
The API exception should have the same javadoc like the internal
exception org.eclipse.jgit.errors.TooLargeObjectInPackException
Change-Id: Ia7508c77609e53c8e808412ac523a93194648e49
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Commit db77610 ensured that all refs/tags commits are added to the
primary GC pack. It did that by adding all of the refs/tags commits
to the primary GC pack PackWriter's "interesting" object set.
Unfortunately, all commit objects in the "interesting" set are
selected as commits for which bitmap indices will be built. In a
repository like chromium with lots of tags, this changed the number of
bitmaps created from <700 to >10000. That puts huge memory pressure on
the GC task.
This change restores the original behavior of ignoring tags when
selecting commits for bitmaps.
In the "uninteresting" set, commits for refs/heads and refs/tags for
unannotated tags can not be differentiated. We instead identify
refs/tags commits by passing their ObjectIds as a new "noBitmaps"
parameter to the PackWriter.preparePack() methods.
PackWriterBitmapPreparer.setupTipCommitBitmaps() can then use that
"noBitmaps" parameter to exclude those commits.
Change-Id: Icd287c6b04fc1e48de773033fe432a9b0e904ac5
Signed-off-by: Terry Parker <tparker@google.com>
CloneCommand.call() has three stages: preparation, then the actual
clone (init/fetch), and finally maybe checking out the working
directory.
Restructure such that if we fail or are cancelled during the actual
clone (middle phase), we do clean up the disk again. This prevents
leaving behind a partial clone in an inconsistent state: either we
have a fully successfully built clone, or nothing at all.
Bug: 516303
Change-Id: I9b18c60f8f99816d42a3deb7d4a33a9f22eeb709
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
DirCacheCheckout is generating names for temporary files. It was not checking
the length of this filenames. It may happen that a generated filename is
longer than 255 chars which causes problems on certain platforms. Make sure
that filenames for temporary files do not exceed 255 chars.
Bug: 508823
Change-Id: I9475c04351ce3faebdc6ad40ea4faa3c326815f4
The ObjectWalker in PackWriterBitmapWalker needs to be reset whenever it
starts a new walk. Move this responsibility from the caller to the
method when the new walk starts.
Change-Id: Ib66003be1b5bdc80f46b9bbbb17d45e616714912
Signed-off-by: Zhen Chen <czhen@google.com>
Some repository topologies can cause carryOntoHistory to overflow the
thread stack, due to its strategy of recursing into the 2nd+ parents
of a merge commit. This can easily happen if a project maintains a
local fork, and frequently pulls from the upstream repository, which
itself may have a branchy history.
Rewrite the carryOntoHistory algorithm to use a fixed amount of thread
stack, pushing the save points onto the heap. By using heap space the
thread stack depth is no longer a concern. Repositories are instead
limited by available memory.
The algorithm is now structured as two loops:
carryOntoHistory: This outer loop pops saved commits off the top of
the stack, allowing the inner loop algorithm to dive down that path
and carry bits onto commits along that part of the graph. The loop
ends when there are no more stack elements.
carryOntoHistoryInner: The inner loop walks along a single path of
the graph. For a string of pearls (commits with one parent each)
r <- s <- t <- u
the algorithm walks backwards from u to r by iteratively updating
its local variable 'c'. This avoids heap allocation along a simple
path that does not require remembering state.
The inner loop breaks in the HAVE_ALL case, when all bits have been
found to be previously set on the commit. This occurs when a prior
iteration of the outer loop (carryOntoHistory) explored a different
path to this same commit, and copied the bits onto it.
When the inner loop encounters a merge commit, it pushes all parents
onto the heap based stack by allocating individual CarryStack
elements for each parent. Parents are pushed in order, allowing
side branches to be explored first.
A small optimization is taken for the last parent, avoiding pushing
it and instead updating 'c', allowing the side branch to be entered
without allocating a CarryStack.
Change-Id: Ib7b67d90f141c497fbdc61a31b0caa832e4b3c04
Add the --recurse-submodules option on the command, which causes
submodules to also be initialized and updated.
Add a callback interface on CloneCommand and SubmoduleUpdateCommand to
them to provide progress feedback for clone operations.
Change-Id: I41b1668bc0d0bdfa46a9a89882c9657ea3063fc1
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Delete expired garbage even when there is no GC pack present.
Delete the condition to check whether the garbage pack creation time
is older than the last GC operation, because it's not possible to
find the last GC operation time when there is no GC pack.
Add additional tests to make sure the contents of the expired garbage
packs are considered during the GC operation and any actively
referenced objects from the garbage packs are copied successfully
into the GC pack before deleting the garbage pack.
Change-Id: I09e8b2656de8ba7f9b996724ad1961d908e937b6
Signed-off-by: Thirumala Reddy Mutchukota <thirumala@google.com>
Add parseCommit(AnyObjectId) method to Repository.
It is quite common to want to parse a commit without already having a
RevWalk. Provide a shortcut to do so to make it more convenient, and to
ensure that the RevWalk is released afterwards.
Signed-off-by: Martin Fick<mfick@codeaurora.org>
Change-Id: I9528e80063122ac318f115900422a24ae49a920e
Android wants them to work, and we're only interested in them for bare
repos, so add them just for that.
Make sure to use symlinks instead of just using the copyfile
implementation. Some scripts look up where they're actually located in
order to find related files, so they need the link back to their
project.
Change-Id: I929b69b2505f03036f69e25a55daf93842871f30
Signed-off-by: Dan Willemsen <dwillemsen@google.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Jeff Gaston <jeffrygaston@google.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Process all "have"s even when MissingObjectException is encountered
Because objects described by the client using "have" lines do not need
to be reachable by any ref on the server, it is possible for them to
point to missing objects in the reachability graph. When such an
object is encountered, I1097a2defa4a9dcf502ca8baca5d32880378818f (Only
throw MissingObjectException when necessary, 2017-03-29) aborts the
"have" walk early to salvage the fetch. The downside of that change
is that remaining "have"s are ignored unless they pointed directly to
an object with a bitmap. In the worst case this can increase the
bandwidth cost of a fetch to the cost of a clone because most "have"s
are ignored.
Avoid this cost by bypassing the failed "have" completely and moving
on to the remaining "have"s.
Change-Id: Iac236b6d05f735078c9935abfa6e58d1eb47f388
When looping through alternates, prevent visiting the same object
directory twice. This could happen when the objects/info/alternates file
includes itself directly or indirectly via a another repo and its
alternates file.
Change-Id: I79bb3da099ebc3c262d2e6c61ed4578eb1aa3474
Signed-off-by: James Melvin <jmelvin@codeaurora.org>
Signed-off-by: Martin Fick <mfick@codeaurora.org>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This is necessary for deploying submodules on android.googlesource.com.
* Allow an empty base URL. This is useful if the 'fetch' field is "."
and all names are relative to some host root.
* The URLs in the resulting superproject are relative to the
superproject's URL. Add RepoCommand#setDestinationURI to
set this. If unset, the existing behavior is maintained.
* Add two tests for the Android and Gerrit case, checking the URL
format in .gitmodules; the tests use a custom RemoteReader which is
representative of the use of this class in Gerrit's Supermanifest
plugin.
Change-Id: Ia75530226120d75aa0017c5410fd65d0563e91b
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Cleanup and test trailing slash handling in ManifestParser
This is a workaround for
https://bugs.openjdk.java.net/browse/JDK-4666701.
Change-Id: Idd04657e8d95a841d72230f8881b6b899daadbc2
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Matthias Sohn
Zhen Chen
Dave Borowitz
Shawn Pearce
Mathieu Cartaud
David Turner
Oliver Lockwood
Mattias Neuling
David Pursehouse
Terry Parker
Yasuhiro Takagi
Han-Wen Nienhuys
Bryan Donlan
Thomas Wolf
Christian Halstrick
Mickael Istria
Thirumala Reddy Mutchukota
Martin Fick
Dan Willemsen
Jonathan Nieder