Do not automatically organize imports using a save action since this
seems to be buggy and removed some annotations org.eclipse.jgit.pgm
needs to use args4j.
Change-Id: I5a91292c3b9241ce2dde3e4ecce14ad460097129
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Revert the following save actions which were introduced in c0ad77d8:
- always use braces around blocks
- remove unused imports
Other than I expected save actions are run globally on edited files -
and not only on edited code lines only.
Hence revert the save action "Convert control statement bodies to
blocks" which would affect a large number of code lines not affected by
the change editing some small part of a class. This would generate a
large number of changes which may lead to many unnecessary conflicts.
Total number of affected lines across jgit would be around 10k lines.
Also revert "Remove unused imports" since it erroneously removes imports
of some annotations needed by pgm classes using args4j.
Change-Id: I879a47f68e664129e6124cf25c1ae1f6a2d7a5aa
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Add the following Eclipse save actions executed when saving modified
lines. This should help to reduce manual work needed to maintain a clean
and consistent code style:
- organize imports
- always use braces around blocks
- add missing annotations
- @Override including implementation of interface methods
- @Deprecated
- remove
- unused imports
- unnecessary $NON-NLS$ tags
- redundant type arguments
Also add default values for new settings that were introduced in recent
Eclipse versions up to Neon since we updated save rules the last time.
Change-Id: Idc90b249df044d0552f04edf01a5f607c4846f50
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Some repositories can have a policy that do not accept certain blobs. To
check if the incoming pack file contains such blobs, ObjectChecker can
be used. However, this ObjectChecker is not called by PackParser if the
blob is stored as a whole. This is because the object can be so large
that it doesn't fit in memory.
This change introduces BlobObjectChecker. This interface takes chunks of
a blob instead of the entire object. ObjectChecker can optionally return
a BlobObjectChecker. This won't change existing ObjectChecker
implementation; existing implementation continues to receive deltified
blob objects only.
Change-Id: Ic33a92c2de42bd7a89786a4da26b7a648b25218d
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
** matching always tries the empty match first. If a mismatch occurs
later, the ** must be extended by exactly one segment and matching must
resume with the matcher following the ** matcher.
Bug: 520920
Change-Id: Id019ad1c773bd645ae92e398021952f8e961f45c
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Path pattern matching for attribute rules is different than matching
for excluded files.
The first difference concerns patterns without slashes. For
gitattributes those must match on the last component only, not on
any earlier segment. This is true also for directory-only patterns.
The second difference concerns directory-only patterns. Those also
must not match on a prefix or segment except the last one. They do
not apply recursively to all files beneath.
And third, matches only on a prefix must match for gitattributes
only if the last matcher was "/**".
Add a new parameter for such path matching to IMatcher.matches() and
pass it through as appropriate (false for gitignore, true for
gitattributes). As far as gitignore is concerned, there is no change.
New tests have been added, and some existing attribute matching tests
have been fixed since they operated on wrong assumptions.
Bug: 508568
Change-Id: Ie825dc2cac8a85a72a7eeb0abb888f3193d21dd2
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
These tests verify that JGit matches the same as C git, for
both attribute matching (.gitattributes) and file exclusion matching
(.gitignore). These tests work by setting up a test repository and
test rules, and then determine excluded files or attributes both with
JGit and with the native C git, and then compare the results.
For .gitignore tests, we run
git ls-files --ignored --exclude-standard -o
and for attribute tests we use
git check-attr --stdin --all
and pass the list of all files in the repository via stdin.
Change-Id: I5b40946e04ff4a97456be7dffe09374323b7c89d
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
The Eclipse compiler raises errors for unthrown exceptions declared to
be thrown by test methods introduced in 88e45399.
Change-Id: I0d91c89e1b20ceff52c38b759abf906cc94e9902
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Except for %p and %r and partially %C, we can do token substitutions
as defined by OpenSSH inside the config file parser. %p and %r can
be replaced only if specified in the config; if not, it would be the
caller's responsibility to replace them with values obtained from the
URI to connect to.
Jsch doesn't know about token substitutions at all. By doing the
replacements as good as we can in the config file parser, we can
make Jsch support most of these tokens.
%i is not handled at all as Java has no concept of a "user ID".
Includes unit tests.
Bug: 496170
Change-Id: If9d324090707de5d50c740b0d4455aefa8db46ee
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Ensure the Jsch instance used knows about ~/.ssh/config. This
enables Jsch to honor more user configurations (see
com.jcraft.jsch.Session.applyConfig()), in particular also the
UserKnownHostsFile configuration, or additional identities given
via multiple IdentityFile entries.
Turn JGit's OpenSshConfig into a full parser that can be a
Jsch-compliant ConfigRepository. This avoids a few bugs
in Jsch's OpenSSHConfig and keeps the JGit-facing interface
unchanged. At the same time we can supply a JGit OpenSshConfig
instance as a ConfigRepository to Jsch. And since they'll both
work from the same object, we can also be sure that the parsing
behavior is identical.
The parser does not handle the "Match" and "Include" keys, and it
doesn't do %-token substitutions (yet).
Note that Jsch doesn't handle multi-valued UserKnownHostFile
entries as known by modern OpenSSH.[1]
[1] http://man.openbsd.org/OpenBSD-current/man5/ssh_config.5
Additional tests for new features are provided in OpenSshConfigTest.
Bug: 490939
Change-Id: Ic683bd412fa8c5632142aebba4a07fad4c64c637
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Add an update_index to every reference in a reftable, storing the
exact transaction that last modified the reference. This is necessary
to fix some merge race conditions.
Consider updates at T1, T3 are present in two reftables. Compacting
these will create a table with range [T1,T3]. If T2 arrives during
or after the compaction its impossible for readers to know how to
merge the [T1,T3] table with the T2 table.
With an explicit update_index per reference, MergedReftable is able to
individually sort each reference, merging individual entries at T3
from [T1,T3] ahead of identically named entries appearing in T2.
Change-Id: Ie4065d4176a5a0207dcab9696ae05d086e042140
* changes:
LongObjectIdTest: Add back self comparison test
Format BUILD files with buildifier
Bazel: Add missing dependency in org.eclipse.jgit.http.test
resolve(Ref) helps callers recursively chase symbolic references and
is a useful function when wrapping a Reftable inside a RefDatabase, as
RefCursor does not resolve symbolic references during iteration.
Change-Id: I1ba143f403773497972e225dc92c35ecb989e154
A compaction of reftables is just copying the results of a
MergedReftable into a ReftableWriter. Wrap this up into a utility.
Change-Id: I6f5677d923e9628993a2d8b4b007a9b8662c9045
MergedReftable combines multiple reference tables together in a stack,
allowing higher/later tables to shadow earlier/lower tables. This
forms the basis of a transaction system, where each transaction writes
a new reftable containing only the modified references, and readers
perform a merge on the fly to get the latest value.
Change-Id: Ic2cb750141e8c61a8b2726b2eb95195acb6ddc83
Add additional test cases for looking up entries within a namespace
such as refs/heads/ or refs/tags/, where the seek is passed a name
that ends with '/'.
Change-Id: I5f944de7518cd0090374bddba48d4dd3955a8d72
Add more test cases that cover larger collections of
references, verifying every reference is accessible
both by scan and by seek.
Change-Id: Icada59fdcfc92a4634f6df61baaebb1c37b75d98
This set of tests covers primitive storage of an empty
file, and each type of supported reference.
Change-Id: I3bdff35cae8ae27283051932f20608b3ac353559
Currently there is no way to determine the precise changes done
to the working tree by a JGit command. Only the CheckoutCommand
actually provides access to the lists of modified, deleted, and
to-be-deleted files, but those lists may be inaccurate (since they
are determined up-front before the working tree is modified) if
the actual checkout then fails halfway through. Moreover, other
JGit commands that modify the working tree do not offer any way to
figure out which files were changed.
This poses problems for EGit, which may need to refresh parts of the
Eclipse workspace when JGit has done java.io file operations.
Provide the foundations for better file change tracking: the working
tree is modified exclusively in DirCacheCheckout. Make it emit a new
type of RepositoryEvent that lists all files that were modified or
deleted, even if the checkout failed halfway through. We update the
'updated' and 'removed' lists determined up-front in case of file
system problems to reflect the actual state of changes made.
EGit thus can register a listener for these events and then knows
exactly which parts of the Eclipse workspace may need to be refreshed.
Two commands manage checking out individual DirCacheEntries themselves:
checkout specific paths, and applying a stash with untracked files.
Make those two also emit such a new WorkingTreeModifiedEvent.
Furthermore, merges may modify files, and clean, rm, and stash create
may delete files.
CQ: 13969
Bug: 500106
Change-Id: I7a100aee315791fa1201f43bbad61fbae60b35cb
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
When creating a new PackFile instance it is specified whether this pack
has an associated bitmap index file or not. This information is cached
and the public method getBitmapIndex() will always assume a bitmap index
file must exist if the cached data tells so. But it may happen that the
packfiles are repacked during a gc in a different process causing the
packfile, bitmap-index and index file to be deleted. Since JGit still
has an open FileHandle on the packfile this file is not really deleted
and can still be accessed. But index and bitmap index file are deleted.
Fix getBitmapIndex() to invalidate the cached packfile instance if such
a situation occurs.
This problem showed up when a gerrit server was serving repositories
which where garbage collected with native git regularly. Fetch and
clone commands for certain repositories failed permanently after a
native git gc had deleted old bitmap index files.
Change-Id: I8e620bec74dd3f310ba42024f9a657062f868f0e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Per the git config documentation[1], pushInsteadOf is ignored when
a remote has explicit pushUris.
Implement this, and adapt tests.
Up to now JGit mistakenly applied pushInsteadOf also to existing
pushUris. If some repositories had relied on this mis-feature,
pushes may newly suddenly fail (the uncritical case; the config
just needs to be fixed) or even still succeed but push to unexpected
places, namely to the non-rewritten pushUrls (the critical case).
The release notes should point out this change.
[1] https://git-scm.com/docs/git-config
Bug: 393170
Change-Id: I38c83204d2ac74f88f3d22d0550bf5ff7ee86daf
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
According to [1], pushInsteadOf is
1. applied to the uris, not to the pushUris
2. ignored if a remote has an explicit pushUri
JGit applied it only to the pushUris. As a result, pushInsteadOf was
ignored for remotes having only a uri, but no pushUri.
This commit implements (1) if there are no pushUris. I did not dare
implement (2) because:
* there are explicit tests for it that expect that pushInsteadOf gets
applied to existing pushUrls, and
* people may actually use and rely on this JGit behavior.
[1] https://git-scm.com/docs/git-config
Bug: 393170
Change-Id: I6dacbf1768a105190c2a8c5272e7880c1c9c943a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
This matches the proposal that has been discussed at length on
git-core mailing list and seems to be the accepted convention.
Change-Id: I9f6ab15144826893d1e2a4b48a2d657d6dd445ec
Otherwise fancy combinations of attributes (binary or -text in
combination with crlf or eol) may result in the corruption of binary
data.
Bug: 520910
Change-Id: I3ffc666c13d1b9d2ed987b69a67bfc7f42ccdbfc
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Attribute rules must match against the entry path relative to the
attribute node containing the rule. The global entry path is to be
used only for the init and the global node (and of course the root
node).
Bug: 520677
Change-Id: I80389a2dc272a72312729ccd5358d7c75e1ea20a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
This avoids executing mergeAlgorithm.merge on binary data, which is
unlikely to be useful.
Arguably, binary data should not make it to
ResolveMerger#contentMerge, but this approach has the following
advantages:
* binary detection is exact, since it doesn't only look at the start
of the blob.
* it is cheap, as we have to iterate over the bytes anyway to find
'\n'.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Change-Id: I424295df1dc60a719859d9d7c599067891b15792
Very short abbreviations that are under 8 hex digits do not
have values in w2. Use w1 as the Java hashCode() instead, so
that the prefix of the abbreviation is always included in the
hashing function used by any java.util.Collection type.
Change-Id: Idaf69f86b62630ba4a022d31b4c293c6d138f557
In a server scenario such as Gerrit Code Review, there may be many
atomic BatchRefUpdates contending for locks on both the packed-refs file
and some subset of loose refs. We already retry lock acquisition to
improve this situation slightly, but we can do better by using an
in-process lock. This way, instead of retrying and potentially exceeding
their timeout, different threads sharing the same Repository instance
can wait on a fair lock without having to touch the disk lock. Since a
server is probably already using RepositoryCache anyway, there is a high
likelihood of reusing the Repository instance.
Change-Id: If5dd1dc58f0ce62f26131fd5965a0e21a80e8bd3
If a repo frequently uses PackedBatchRefUpdates, there is likely to be
contention on the packed-refs file, so it's not appropriate to fail
immediately the first time we fail to acquire a lock. Add some logic to
RefDirectory to support general retrying of lock acquisition.
Currently, there is a hard-coded wait starting at 100ms and backing off
exponentially to 1600ms, for about 3s of total wait. This is no worse
than the hard-coded backoff that JGit does elsewhere, e.g. in
FileUtils#delete. One can imagine a scheme that uses per-repository
configuration of backoff, and the current interface would support this
without changing any callers.
Change-Id: I4764e11270d9336882483eb698f67a78a401c251
Make sure all objects referenced by references are reachable. Stop at
the first missing object.
Change-Id: Ifcd7392c4321b17d9290bd87f038bc62bc10dabb
Signed-off-by: Zhen Chen <czhen@google.com>
JGit already had some fsck-like classes like ObjectChecker which can
check for an individual object.
The read-only FsckPackParser which will parse all objects within a pack
file and check it with ObjectChecker. It will also check the pack index
file against the object information from the pack parser.
Change-Id: Ifd8e0d28eb68ff0b8edd2b51b2fa3a50a544c855
Signed-off-by: Zhen Chen <czhen@google.com>
On-disk reflogs are not stored in the packed-refs file, so we cannot
ensure atomic updates. We choose the lesser evil of dropping failed
reflog updates on the floor, rather than throwing an exception even
though the underlying ref updates succeeded.
Add tests for reflogs to BatchRefUpdateTest.
Change-Id: Ia456ba9e36af8e01fde81b19af46a72378e614cd
* Factor out helpers for setting up and executing updates.
* Use common assert methods, with a special enum type that papers over
the fact that there is no ReceiveCommand.Result for transaction
aborted.
* Static import ReceiveCommand.Type constants.
* Add blank lines to separate repo setup, update execution, and asserts.
Change-Id: Ic3717f94331abfc7ae3e92065f3fe32026bf7cea
Run with @Parameterized, so we don't have to duplicate test setup for
each atomic/non-atomic test. We still have to have two different sets of
asserts for the cases where the behavior is different. In fact, this is
a readability win: it emphasizes that performing the exact same setup
except for the atomic setting will have different behavior.
Change-Id: I78a8214075e204732a423341f14c09de273a7854
The existing packed-refs file provides a mechanism for implementing
atomic multi-ref updates without any changes to the on-disk format or
lockfile protocol. We just need to make sure that there are no loose
refs involved in the transaction, which we can achieve by packing the
refs while holding locks on all loose refs. Full details of the
algorithm are in the PackedBatchRefUpdate javadoc.
This change does not implement reflog support, which will come in a
later change.
Change-Id: I09829544a0d4e8dbb141d28c748c3b96ef66fee1
ReceiveCommand.Result has a slightly richer set of possibilities, so it
makes sense for RefUpdate.Result to have more values in order to match.
In particular, this allows us to return REJECTED_MISSING_OBJECT from
RefUpdate when an object is missing.
The comment in RefUpdate#safeParse about expecting some old objects to be
missing is only applicable to the old ID, not the new ID. A missing new
ID is a bug or programmer error, and we should not update a ref to point
to one.
Fix various tests that started failing because they depended for no good
reason on setting refs to point to nonexistent objects; it's always easy
to create a real object when necessary.
It is possible that some downstream users of RefUpdate.Result might
choose to handle one of the new statuses differently, for example by
providing a more user-readable error message; that is not done in this
change.
Change-Id: I734b1c32d5404752447d9e20329471436ffe05fc
Fix patch matching for patterns of form a/b/** : this should not match
paths like a/b but still match a/b/ and a/b/c.
Change-Id: Iacbf496a43f01312e7d9052f29c3f9c33807c85d
Signed-off-by: Dmitry Pavlenko <pavlenko@tmatesoft.com>
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* changes:
Add tests for updating single refs to missing objects
Fix deleting symrefs
RefDirectory: Throw exception if CAS of packed ref list fails
ReceiveCommand: Explicitly check constructor preconditions
BatchRefUpdate: Document when getPushOptions is null
When a file uses a different block size (e.g. 500) than the cache
(e.g. 512), and the DfsPackFile's blockSize field has not been
initialized, the cache misaligns block loads. The cache uses its
default of 512 to compute the block alignment instead of the file's
500.
This causes DfsReader try to set an empty range into an Inflater,
resulting in an object being unable to load.
Change-Id: I7d6352708225f62ef2f216d1ddcbaa64be113df6
Simple test to verify two DfsRepository instances will reuse the same
DfsBlocks in the DfsBlockCache, even though the DfsStreamKey instance
is now different between their DfsPackFile instances.
Change-Id: I409c109142dea488d189b9ac0d3c319755dce7b4
By making this a deterministic function, DfsBlockCache can stop
retaining a map of every DfsPackDescription it has ever seen. This
fixes a long standing memory leak in DfsBlockCache.
This refactoring also simplifies the idea of setting up more
lightweight objects around streams.
Change-Id: I051e7b96f5454c6b0a0e652d8f4a69c0bed7f6f4
The reader may find it surprising that this succeeds without incident
unless there is peeling or a fast-forward check involved. This behavior
may be changed in the future, but for now, just document the current
behavior.
Change-Id: I348b37e93e0264dc0905c4d58ce881852d1dfe5e
The RefDirectory implementation of doDelete never considered whether to
delete a symref or its leaf, because the detachingSymbolicRef bit was
never exposed from RefUpdate. The behavior was thus incorrectly to
always delete the symref, never the leaf.
There was no test for this behavior. The only thing that attempted to be
a test was testDeleteHeadInBareRepo, but this test was broken for
reasons unrelated to this bug. Specifically, it set the leaf to point to
a completely nonexistent object, and then asserted that deleting HEAD
resulted in NO_CHANGE. The only reason this test ever passed is because
of a quirk of updateImpl, which treats a missing object as the same as
null. This quirk aside, the test wasn't really testing the right thing.
Turn this into a real test by writing out a real object and pointing the
leaf at that.
Also, add a test for the detachingSymbolicRef case, i.e. deleting the
symref and leaving the leaf alone.
Change-Id: Ib96d2a35b4f99eba0734725486085fc6f9d78aa5
The contents of the packedRefList AtomicReference should never differ
from what we expect prior to writing, because this segment of the code
is protected by the packed-refs lock file on disk. If it does happen,
whether due to programmer error or a rogue process not respecting the
locking protocol, it's better to let the caller know than to silently
drop the whole commit operation on the floor.
The existing concurrentOnlyOneWritesPackedRefs test is inherently
nondeterministic as written, and was already about 6% flaky as measured
by bazel:
$ bazel test --runs_per_test=200 //org.eclipse.jgit.test:org_eclipse_jgit_internal_storage_file_GcPackRefsTest
...
INFO: Elapsed time: 42.608s, Critical Path: 10.35s
//org.eclipse.jgit.test:org_eclipse_jgit_internal_storage_file_GcPackRefsTest FAILED in 12 out of 200 in 1.6s
Stats over 200 runs: max = 1.6s, min = 1.1s, avg = 1.3s, dev = 0.1s
This flakiness was caused by the assumption that exactly one of the 2
threads would fail, when both might actually succeed in practice due to
racing on the compare-and-swap.
For whatever reason, this change affected the interleaving behavior in
such a way that the flakiness jumped to around 50%. Making the
interleaving of the test fully deterministic is beyond the scope of this
change, but a simple tweak to the assertion is enough to make it pass
consistently 200+ times both before and after this change.
Change-Id: I5ff4dc39ee05bda88d47909acb70118f3d0c8f74
Some downstream code checks whether a ReceiveCommand is a create or a
delete based on the type field. Other downstream code (in particular a
good chunk of Gerrit code I wrote) checks the same thing by comparing
oldId/newId to zeroId. Unfortunately, there were no strict checks in the
constructor that ensures that zeroId is only set for oldId/newId if the
type argument corresponds, so a caller that passed mismatched IDs and
types would observe completely undefined behavior as a result. This is
and always has been a misuse of the API; throw IllegalArgumentException
so the caller knows that it is a misuse.
Similarly, throw from the constructor if oldId/newId are null. The
non-nullness requirement was already documented. Fix RefDirectoryTest to
not do the wrong thing.
Change-Id: Ie2d0bfed8a2d89e807a41925d548f0f0ce243ecf
This renaming supports reusing DfsStreamKey in a future commit
to index other PackExt type streams inside of the DfsBlockCache.
Change-Id: Ib52d374e47724ccb837f4fbab1fc85c486c5b408
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>
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>
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>
Change-Id: Idcc93c2ca95938995d489cffda649c7d7b26c50e
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
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>
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>
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>
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
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>
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>
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>
* stable-4.7:
Cleanup and test trailing slash handling in ManifestParser
ManifestParser: Throw exception if remote does not have fetch attribute
Change-Id: Ia9dc3110bcbdae05175851ce647ffd11c542f4c0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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>
In the repo manifest documentation [1] the fetch attribute is marked
as "#REQUIRED".
If the fetch attribute is not specified, this would previously result in
NullPointerException. Throw a SAXException instead.
[1] https://gerrit.googlesource.com/git-repo/+/master/docs/manifest-format.txt
Change-Id: Ib8ed8cee6074fe6bf8f9ac6fc7a1664a547d2d49
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
It was already increased in 61a943e, but that was still not enough to
take into account the length of snapshot versions.
Change-Id: Ib54cec97e97042fe274b87a3a1afa9bb06c8bf19
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
All that's really required to run a merge operation is a single
ObjectInserter, from which we can construct a RevWalk, plus a Config
that declares a diff algorithm. Provide some factory methods that don't
take Repository.
Change-Id: Ib884dce2528424b5bcbbbbfc043baec1886b9bbd
A higher limit is required to account for proper JGit version number
being sent in the UserAgent.
The version string "4.7.0.201704031717-r" is 20 characters, however
the strings used during development are shorter:
- When running from mvn, "4.7.0.qualifier" is used; 15 characters
- When running in Eclipse, "unknown" is used; 7 characters
Change-Id: I9aca2f71389a42fedce305e9078db016869c3d1a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
DiffAlgorithms can return different edit locations for inserts or
deletes, if they can be "shifted" up or down repeating blocks of
lines. This causes the 3-way merge to apply both edits, resulting in
incorrectly removing or duplicating lines.
Augment an existing "tidy-up" stage in DiffAlgorithm to move all
shiftable edits (not just the last INSERT edit) to a consistent
location, and add test cases for previously incorrect merges.
Bug: 514095
Change-Id: I5fe150a2fc04e1cdb012d22609d86df16dfb0b7e
Signed-off-by: KB Sriram <kbsriram@google.com>
Add a new API method to set the recurse mode, and pass the mode into
the fetch command.
Extend the existing FetchCommandRecurseSubmodulesTest to also perform
the same tests for fetch. Rename the test class accordingly.
Change-Id: I12553af47774b4778f7011e1018bd575a7909bd0
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
In I3ab958ce8 explicit dependency in lib/BUILD were defined and most
of the bazel build implementation was switched to using it. Switch
test.bzl test implementation to using explicit dependencies as well.
Change-Id: I4413d1a45addeeb2a980d07669fa034c2eebb3a4
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
Add bazel build for ui and junit.http, and the test packages.
A number of different test labels are supported:
api
attributes
dfs
diff
http
lfs
lfs-server
nls
notes
pack
patch
pgm
reftree
revplot
revwalk
storage
submodule
symlinks
transport
treewalk
util
To run all tests:
bazel test //...
To run specific tests, using labels:
bazel test --test_tag_filters=api,dfs,revplot,treewalk //...
Change-Id: Ic41b05a79d855212e67b1b4707e9c6b4dc9ea70d
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
Signed-off-by: Jonathan Nieder <jrn@google.com>
This is a preparation change to Bazel build implementation. Error
Prone rejects the code with variable crypto algorithm as insecure
see: [1].
[1] http://errorprone.info/bugpattern/InsecureCryptoUsage
Change-Id: I92db70a7da454bc364597a995e8be5dccc2d6427
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
With the filename suffix "Tests", the module was not included in tests
when building with Maven, and without the @Test annotations the tests
didn't get executed under Eclipse or buck test.
testRacyGitDetection was failing because the index file did not exist.
Add the missing configuration, the missing annotations, and add a call
to reset() in testRacyGitDetection to force creation of the index file.
Change-Id: I29dd8f89c36fef4ab40bedce7f4a26bd9b2390e4
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
This fixes error flagged by error prone:
Java compilation in rule '//org.eclipse.jgit.test:jgit' failed: Worker
process sent response with exit code: 1.
org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/RevFlagSetTest.java:149:
error: [CollectionIncompatibleType] Argument '"bob"' should not be
passed to this method; its type String is not compatible with its
collection's type argument RevFlag
assertFalse(set.contains("bob"));
Change-Id: I4a971ce92fee55e28b2ab0c7b716ac20fa9c6709
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
The submodule.name.fetchRecurseSubmodules value was being read from the
configuration of the submodule, but it should be read from the config
of the parent repository.
Also, the fetch.recurseSubmodules value from the parent repository's
configuration was not being considered at all.
Fix both of these and add tests. Now the precedence of the recurse mode
is determined as follows:
1. Value passed to the API
2. Value configured in submodule.name.fetchRecurseSubmodules
3. Value configured in fetch.recurseSubmodules
4. Default to "on demand"
Change-Id: Ic23b7c40b5f39135fb3fd754c597dd4bcc94240c
Extend FetchCommand to expose a new method, setRecurseSubmodules(mode),
which allows to set the mode to ON, OFF or ON_DEMAND.
After fetching a repository, its submodules are recursively fetched:
- When the mode is YES, submodules are always fetched.
- When the mode is NO, submodules are not fetched.
- When the mode is ON_DEMAND, submodules are only fetched when the
parent repository receives an update of the submodule and the new
revision is not already in the submodule.
The mode is determined in the following order of precedence:
- Value specified in the API call using setRecurseSubmodules.
- Value specified in the repository's config under the key
submodule.name.fetchRecurseSubmodules
- Defaults to ON_DEMAND if neither of the previous is set.
Extend FetchResult to recursively include results for submodules, as
a map of the submodule path to an instance of FetchResult.
Test setup is based on testCloneRepositoryWithNestedSubmodules.
Change-Id: Ibc841683763307cb76e78e142e0da5b11b1add2a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
This operation was added recently with the goal to provide some
way to auto-correct invalid user input, or to provide a correction
suggestion to the user -- EGit uses it now that way. But the initial
implementation was very restrictive; it removed all non-ASCII
characters and even slashes.
Understandably end users were not happy with that. Git has no such
restriction to ASCII-only; nor does JGit. Branch names should be
meaningful to the end user, and if a user-supplied branch name is
invalid for technical reasons, a "normalized" name should still
be meaningful to the user.
Rewrite to attempt a minimal fix such that the result will pass
isValidRefName.
* Replace all Unicode whitespace by underscore.
* Replace troublesome special characters by dash.
* Collapse sequences of underscores, dots, and dashes.
* Remove underscores, dots, and dashes following slashes, and
collapse sequences of slashes.
* Strip leading and trailing sequences of slashes, dots, dashes,
and underscores.
* Avoid the ".lock" extension.
* Avoid the Windows reserved device names.
* If input name is null return an empty String so callers don't need to
check for null.
This still allows branch names with single slashes as separators
between components, avoids some pitfalls that isValidRefName() tests
for, and leaves other character untouched and thus allows non-ASCII
branch names.
Also move the function from the bottom of the file up to where
isValidRefName is implemented.
Bug: 512508
Change-Id: Ia0576d9b2489162208c05e51c6d54e9f0c88c3a7
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Update SHA1 class to include a Java port of sha1dc[1]'s ubc_check,
which can detect the attack pattern used by the SHAttered[2] authors.
Given the shattered example files that have the same SHA-1, this
modified implementation can identify there is risk of collision given
only one file in the pair:
$ jgit ...
[main] WARN org.eclipse.jgit.util.sha1.SHA1 - SHA-1 collision 38762cf7f55934b34d179ae6a4c80cadccbb7f0a
When JGit detects probability of a collision the SHA1 class now warns
on the logger, reporting the object's SHA-1 hash, and then throws a
Sha1CollisionException to the caller.
From the paper[3] by Marc Stevens, the probability of a false positive
identification of a collision is about 14 * 2^(-160), sufficiently low
enough for any detected collision to likely be a real collision.
git-core[4] may adopt sha1dc before the system migrates to an entirely
new hash function. This commit enables JGit to remain compatible with
that move to sha1dc, and help protect users by warning if similar
attacks as SHAttered are identified.
Performance declined about 8% (detection off), now:
MessageDigest 238.41 MiB/s
MessageDigest 244.52 MiB/s
MessageDigest 244.06 MiB/s
MessageDigest 242.58 MiB/s
SHA1 216.77 MiB/s (was ~240.83 MiB/s)
SHA1 220.98 MiB/s
SHA1 221.76 MiB/s
SHA1 221.34 MiB/s
This decline in throughput is attributed to the step loop unrolling in
compress(), which was necessary to easily fit the UbcCheck logic into
the hash function. Using helper functions s1-s4 reduces the code
explosion, providing acceptable throughput.
With detection enabled (default):
SHA1 detectCollision 180.12 MiB/s
SHA1 detectCollision 181.59 MiB/s
SHA1 detectCollision 181.64 MiB/s
SHA1 detectCollision 182.24 MiB/s
sha1dc (native C) ~206.28 MiB/s
sha1dc (native C) ~204.47 MiB/s
sha1dc (native C) ~203.74 MiB/s
Average time across 100,000 calls to hash 4100 bytes (such as a commit
or tree) for the various algorithms available to JGit also shows SHA1
is slower than MessageDigest, but by an acceptable margin:
MessageDigest 17 usec
SHA1 18 usec
SHA1 detectCollision 22 usec
Time to index-pack for git.git (217982 objects, 69 MiB) has increased:
MessageDigest SHA1 w/ detectCollision
------------- -----------------------
20.12s 25.25s
19.87s 25.48s
20.04s 25.26s
avg 20.01s 25.33s +26%
Being implemented in Java with these additional safety checks is
clearly a penalty, but throughput is still acceptable given the
increased security against object name collisions.
[1] https://github.com/cr-marcstevens/sha1collisiondetection
[2] https://shattered.it/
[3] https://marc-stevens.nl/research/papers/C13-S.pdf
[4] https://public-inbox.org/git/20170223230621.43anex65ndoqbgnf@sigill.intra.peff.net/
Change-Id: I9fe4c6d8fc5e5a661af72cd3246c9e67b1b9fee6
The TreeWalk filtering classes need to support the three different
meanings of the return value the path comparison generates.
A new path comparison method (isPathMatch) is created with
three distinct return values (isPathPrefix use value '0' to
encode two of these) which will makes it possible for the logical
operators (especially NOT) to aggregate a correct verdict.
A filter like: AND(Path("path"), NOT(Path("path/to/other")))
Should filter out 'path/to/other/file', but not 'path/to/my/file'.
The path-limiting feature when testing path/to/my/file, would
result to run test for the following paths:
path
path/to
path/to/my
path/to/my/file
isPathPrefix('path/to/other') will return '0' for the first two
and since there is no way for NOT to distinguish between an exact
match and a match indicating that the tested path is a 'parent',
it will incorrectly return false and thus remove everything below
'path' immediately.
isPathMatch has a distinguished value for 'parent' matches that
will be preserved through the logic operators and should not
cause an over-eager removal of paths.
The functionality of isPathPrefix is required by other parts
and is untouched.
Unit tests are included to ensure that the logical functionality
is correct and can be preserved.
Change-Id: Ice2ca9406f09f1b179569e99b86a0e5d77baa20d
Signed-off-by: Magnus Vigerlöf <magnus.vigerlof@gmail.com>
Allow SHA1 instances to be reused to compute another hash value, and
resume caching them in ObjectInserter and PackParser. This shaves a
small amount of running time off parsing git.git's pack file:
before after
------ ------
25.25s 25.55s
25.48s 25.06s
25.26s 24.94s
Almost noise (small difference), but recycling the instances reduces
some stress on the memory allocator finding two 80 word message block
arrays needed for hashing and collision detection.
Change-Id: I4af88a720e81460293bc5c5d1d3db1a831e7e228
This implementation is derived straight from the description written
in RFC 3174. On Mac OS X with Java 1.8.0_91 it offers similar
throughput as MessageDigest SHA-1:
system 239.75 MiB/s
system 244.71 MiB/s
system 245.00 MiB/s
system 244.92 MiB/s
sha1 234.08 MiB/s
sha1 244.50 MiB/s
sha1 242.99 MiB/s
sha1 241.73 MiB/s
This is the fastest implementation I could come up with. Common SHA-1
implementation tricks such as unrolling loops creates a method too
large for the JIT to effectively optimize, resulting in lower overall
hashing throughput. Using a preprocessor to perform the register
renaming of A-E also didn't help, as again the method was too large
for the JIT to effectively optimize.
Fortunately the fastest version is a naive, straight-forward
implementation very close to the description in RFC 3174.
Change-Id: I228b05c4a294ca2ad51386cf0e47978c68e1aa42
Since the introduction of generic type parameter inference in Java 7,
it's not necessary to explicitly specify the type of generic parameters.
Enable the warning in Eclipse, and fix all occurrences.
Change-Id: I9158caf1beca5e4980b6240ac401f3868520aad0
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Set missingOverrideAnnotation=warning in Eclipse compiler preferences
which enables the warning:
The method <method> of type <type> should be tagged with @Override
since it actually overrides a superclass method
Justification for this warning is described in:
http://stackoverflow.com/a/94411/381622
Enabling this causes in excess of 1000 warnings across the entire
code-base. They are very easy to fix automatically with Eclipse's
"Quick Fix" tool.
Fix all of them except 2 which cause compilation failure when the
project is built with mvn; add TODO comments on those for further
investigation.
Change-Id: I5772061041fd361fe93137fd8b0ad356e748a29c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Archived zip files for a same commit have different MD5 hash because
mdate and mdate in the header of zip entries are not specified. In
this case, Commons Compress sets an archived time.
In the original git implementation, it's set a commit time:
e2b2d6a172/archive.c (L378)
By this fix, archive command sets the commit time to ZipArchiveEntry
when RevCommit is given as an archiving target.
Change-Id: I30dd8710e910cdf42d57742f8709e9803930a123
Signed-off-by: Naoki Takezoe <takezoe@gmail.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If the pruneexpire config is set to "now", then any unreferenced loose
objects are immediately eligible for gc. So there is no need to
actually write the loose objects.
Users who run hosting services which sometimes accept large, entirely
garbage packs might set the following configurations:
gc.pruneExpire = now
gc.prunePackExpire = 2.weeks
Then garbage objects will be kept around in packs, but after two weeks
the packs themselves will get deleted.
For client-side users of jgit, the default settings will loosen
garbage objects, and, after an hour, delete the old packs in which
they resided.
Change-Id: I8f686ac60b40181b1ee92ac6c313c3f33b55c44c
Signed-off-by: David Turner <dturner@twosigma.com>
Place a configurable upper bound on the amount of command data
received from clients during `git push`. The limit is applied to the
encoded wire protocol format, not the JGit in-memory representation.
This allows clients to flexibly use the limit; shorter reference names
allow for more commands, longer reference names permit fewer commands
per batch.
Based on data gathered from many repositories at $DAY_JOB, the average
reference name is well under 200 bytes when encoded in UTF-8 (the wire
encoding). The new 3 MiB default receive.maxCommandBytes allows about
11,155 references in a single `git push` invocation. A Gerrit Code
Review system with six-digit change numbers could still encode 29,399
references in the 3 MiB maxCommandBytes limit.
Change-Id: I84317d396d25ab1b46820e43ae2b73943646032c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
submoduleStandalone is created by createWorkRepository() which adds
the created repository to the set of repositories to be closed in
the test teardown. It is therefore not necessary to explicitly close
it.
Change-Id: Ib6f525b644fdeaaf1934df39cc2d3583a0d883dc
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
When rebasing, force-pushing has a race condition: someone else might
have pushed a commit since the one you just rewrote. The force-with-lease
option prevents this by ensuring that the ref's old value is the one
that you expected.
Change-Id: I97ca9f8395396c76332bdd07c486e60549ca4401
Signed-off-by: David Turner <dturner@twosigma.com>
In 8ac65d33ed PackWriter changed its
behavior to always prefer the last object representation presented
to it by the ObjectReuseAsIs implementation. This was a fix to avoid
delta chain cycles.
Unfortunately it can lead to suboptimal compression when concurrent
GCs are run on the same repository. One case is automatic GC running
(with default settings) in parallel to a manual GC that has disabled
delta reuse in order to generate new smaller deltas for the entire
history of the repository.
Running GC with no-reuse generally requires more CPU time, which
also translates to a longer running time. This can lead to a race
where the automatic GC completes before the no-reuse GC, leaving
the repository in a state such as:
no-reuse GC: size 1 GiB, mtime = 18:45
auto GC: size 8 GiB, mtime = 17:30
With the default sort ordering, the smaller no-reuse GC pack is
sorted earlier in the pack list, due to its more recent mtime.
During object reuse in a future GC, these smaller representations
are considered first by PackWriter, but are all discarded when the
auto GC file from 17:30 is examined second (due to its older mtime).
Work around this in two ways.
Well formed DFS repositories should have at most 1 GC pack. If
2 or more GC packs exist, break the sorting tie by selecting the
smaller file earlier in the pack list. This allows all normal read
code paths to favor the smaller file, which places less pressure
on the DfsBlockCache. If any GC race happens, readers serving clone
requests will prefer the file that is smaller.
During object reuse, flip this ordering so that the smaller file is
last. This allows PackWriter to see smaller deltas last, replacing
larger representations that were previously considered from other
pack files.
Change-Id: I0b7dc8bb9711c82abd6bd16643f518cfccc6d31a
Delta search was discarding discovered deltas if an object appeared
near a type boundary in the delta search window. This has caused JGit
to produce larger pack files than other implementations of the packing
algorithm.
Delta search works by pushing prior objects into a search window, an
ordered list of objects to attempt to delta compress the next object
against. (The window size is bounded, avoiding O(N^2) behavior.)
For implementation reasons multiple object types can appear in the
input list, and the window. PackWriter commonly passes both trees and
blobs in the input list handed to the DeltaWindow algorithm. The pack
file format requires an object to only delta compress against the same
type, so the DeltaWindow algorithm must stop doing comparisions if a
blob would be compared to a tree.
Because the input list is sorted by object type and the window is
recently considered prior objects, once a wrong type is discovered in
the window the search algorithm stops and uses the current result.
Unfortunately the termination condition was discarding any found
delta by setting deltaBase and deltaBuf to null when it was trying
to break the window search.
When this bug occurs, the state of the DeltaWindow looks like this:
current
|
\ /
input list: tree0 tree1 blob1 blob2
window: blob1 tree1 tree0
/ \
|
res.prev
As the loop iterates to the right across the window, it first finds
that blob1 is a suitable delta base for blob2, and temporarily holds
this in the bestDelta/deltaBuf fields. It then considers tree1, but
tree1 has the wrong type (blob != tree), so the window loop must give
up and fall through the remaining code.
Moving the condition up and discarding the window contents allows
the bestDelta/deltaBuf to be kept, letting the final file delta
compress blob1 against blob0.
The impact of this bug (and its fix) on real world repositories is
likely minimal. The boundary from blob to tree happens approximately
once in the search, as the input list is sorted by type. Only the
first window size worth of blobs (e.g. 10 or 250) were failing to
produce a delta in the final file.
This bug fix does produce significantly different results for small
test repositories created in the unit test suite, such as when a pack
may contains 6 objects (2 commits, 2 trees, 2 blobs). Packing test
cases can now better sample different output pack file sizes depending
on delta compression and object reuse flags in PackConfig.
Change-Id: Ibec09398d0305d4dbc0c66fce1daaf38eb71148f
Disabling the garbage pack coalescing when garbageTtl > 0 can result in
lot of garbage packs if they are created within the garbageTtl time.
To avoid a large number of garbage packs, re-introducing garbage pack
coalescing for the packs that are created within a single calendar day
when the garbageTtl is more than one day or one third of the garbageTtl.
Change-Id: If969716aeb55fb4fd0ff71d75f41a07638cd5a69
Signed-off-by: Thirumala Reddy Mutchukota <thirumala@google.com>
Cover the case where the exception is wrapped up as a
cause, e.g., PackIndex#open(File).
Change-Id: I0df5b1e9c2ff886bdd84dee3658b6a50866699d1
Signed-off-by: Hongkai Liu <hongkai.liu@ericsson.com>
* stable-4.6:
Clean up orphan files in GC
Change-Id: I4fb6b4cd03d032535a9c04ede784bea880b4536b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
JGit now requires Java 8, so it is no longer necessary to have a
separate class for Java 7 specific tests. Remove it and merge its
tests into the existing FileTreeIteratorTest.
FileTreeIteratorTest has an @Before annotated method that sets up
some files in the git, which breaks the tests which have assumptions
on the file names. Add adjustments.
Change-Id: I14f88d8e079e1677c8dfbc1fcbf4444ea8265365
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Rename the test class to match the name of the class under test.
JGit now requires Java 8 so it is no longer necessary to have a
separate class (FileUtils7Test) for Java 7 tests. Merge those into
FileUtilsTest.
Change-Id: I39dd7e76a2e4ce97319c7d52261b0a1546879788
Signed-off-by: Hongkai Liu <hongkai.liu@ericsson.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
An orphan file is either a bitmap or an idx file in pack folder,
and its corresponding pack file is missing.
Change-Id: I3c4cb1f7aa99dd7b398bdb8d513f528d7761edff
Signed-off-by: Hongkai Liu <hongkai.liu@ericsson.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The tearDown() of the superclass closed the repository once more which
led to a negative use count warning logged by Repository.close().
Change-Id: I331f85a540c68264a53456276c32f72b79113d61
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
createBareRepository adds the created repo to the list of repos to be
closed in the superclass's teardown. Wrapping it in try-with-resource
causes it to be closed too many times, resulting in a corrupt use
count.
Change-Id: I4c70630bf6008544324dda453deb141f4f89472c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
The repositories get added to the "toClose" set by createBareRepository,
and are then closed in the superclass's tearDown method.
Explicitly closing them in this test class's teardown causes the use
count to go negative when subsequently closed again by the superclass.
Change-Id: Idcbb16b4cf4bf0640d7e4ac15d1926d8a27c1251
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
These methods add the created Repository into "toClose", and they are
then closed by LocalDiskRepositoryTestCase's tearDown method.
Calling them in try-with-resource causes them to first be closed in
the test method, and then again in tearDown, which results in the use
count going negative and a log message on the console.
While this is not a serious problem, having so many false positives
in the logs will potentially drown out real cases of Repository being
closed too many times.
Change-Id: Ib374445e101dc11cb840957b8b19ee1caf777392
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
The repositories are already closed in the superclass teardown due
to being added to the "toClose" set.
Change-Id: I768ba8a02fc585907687caf37e2e283434016c04
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Otherwise these methods may produce unexpected results if used for
strings that are intended to be interpreted locale independently.
Examples are programming language identifiers, protocol keys, and HTML
tags. For instance, "TITLE".toLowerCase() in a Turkish locale returns
"t\u0131tle", where '\u0131' is the LATIN SMALL LETTER DOTLESS I
character.
See
https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#toLowerCase--http://blog.thetaphi.de/2012/07/default-locales-default-charsets-and.html
Bug: 511238
Change-Id: Id8d8f37d84d62239c918b81f8d883ed798d87656
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The Compacter and Garbage Collector will record the estimated size of
the newly going to be created compact, gc or garbage packs. This
information can be used by the clients to better make a call on how to
actually store the pack based on the approximated expected size.
Added a new protected method DfsObjDatabase.newPack(PackSource
packSource, long estimatedPackSize), so that the clients can override
this method to make use of the estimatedPackSize while creating a new
PackDescription object. The default implementation of this method is
equivalent to
newPack(packSource).setEstimatedPackSize(estimatedPackSize). I didn't
make it abstract because that would force all the existing sub classes
of DfsObjDatabase to implement this method. Due to this default
implementation, the estimatedPackSize is added to DfsPackDescription
using a setter instead of a constructor parameter (even though
constructor parameter would be a better choice as this value is set only
during the object creation).
Change-Id: Iade1122633ea774c2e842178a6a6cbb4a57b598b
Signed-off-by: Thirumala Reddy Mutchukota <thirumala@google.com>
An unreferenced object might appear in a pack. This could only happen
because it was previously referenced, and then later that reference
was removed. When we gc, we copy the referenced objects into a new
pack, and delete the old pack. This would remove the unreferenced
object. Now we first create a loose object from any unreferenced
object in the doomed pack. This kicks off the two-week grace period
for that object, after which it will be collected if it's not
referenced.
This matches the behavior of regular git.
Change-Id: I59539aca1d0d83622c41aa9bfbdd72fa868ee9fb
Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
The new --preserve-oldpacks option moves old pack files into the
preserved subdirectory instead of deleting them after repacking.
The new --prune-preserved option prunes old pack files from the
preserved subdirectory after repacking, but before potentially
moving the latest old packfiles to this subdirectory.
These options are designed to prevent stale file handle exceptions
during git operations which can happen on users of NFS repos when
repacking is done on them. The strategy is to preserve old pack files
around until the next repack with the hopes that they will become
unreferenced by then and not cause any exceptions to running processes
when they are finally deleted (pruned).
Change-Id: If3f729f0d9ce920ee2c3e6acdde46f2068be61d2
Signed-off-by: James Melvin <jmelvin@codeaurora.org>
Generic normalization method for a possible invalid branch name.
The method compresses dividers between spaces, then replaces spaces
and non word characters with underscores.
This method is needed in preparation for subsequent EGit changes.
Bug: 509878
Change-Id: Ic0d12f098f90f912a45bcc5693d6accf751d4e58
Signed-off-by: Wim Jongman <wim.jongman@remainsoftware.com>
If there are untracked changes, apply only the untracked tree
after a successful merge. The merge tree from merging untracked
with HEAD would also contain files already reset before (changes
in tracked files) and try to reset those again,leading to false
checkout conflicts.
Bug: 505804
Change-Id: Iaced4d277623334d11e3d1cca5969590d7c5093e
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
ObjectDirectory.getShallowCommits should throw an IOException
instead of an InvalidArgumentException if invalid SHAs are present
in .git/shallow (as this file is usually edited by a human).
Change-Id: Ia3a39d38f7aec4282109c7698438f0795fbec905
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
This fixes a nasty performance issue for repositories that have many
objects referenced through refs/tags/, but not in refs/heads/.
Situations like this can arise when a project has made releases like
refs/tags/v1.0, and then decides to orphan history and start over for
version 2. The v1.0 objects are not reachable from master anymore,
but are still live due to the v1.0 tag.
When tags are packed in the GC_OTHER pack, bitmaps are not able to
cover the repository's contents. This may cause very slow counting
times during git clone, as the server must enumerate the ancient
history under refs/tags/ to respond to the client.
Clients by default always ask for all tags when asking for all heads
during clone. This has been true since git-core commit 8434c2f1afedb
(Apr 27 2008), when clone was converted to a builtin. Including tags
in the main GC pack should still allow servers to benefit from the
fast full pack reuse path when serving a clone to a client.
Change-Id: I22e29517b5bc6fa3d6b19a19f13bef0c68afdca3
Previously it was looking for a keep file with the name of a pack file
(extenstion included) appended with a '.keep'. However, the keep file
name should be the pack file name with a '.keep' extension
Change-Id: I9dc4c7c393ae20aefa0b9507df8df83610ce4d42
Signed-off-by: James Melvin <jmelvin@codeaurora.org>
FileSnapshot.isModified may have reported a file to be clean although it
was actually dirty.
Imagine you have a FileSnapshot on file f. lastmodified and lastread are
both t0. Now time is t1 and you
1) modify the file
2) update the FileSnapshot of the file (lastModified=t1, lastRead=t1)
3) modify the file again
4) wait 3 seconds
5) ask the Filesnapshot whether the file is dirty or not. It erroneously
answered it's clean.
Any file which has been modified longer than 2.5 seconds ago was
reported to be clean. As the test shows that's not always correct.
The real-world problem fixed by this change is the following:
* A gerrit server using JGit to serve git repositories is processing
fetch requests while simultaneously a native git garbage collection
runs on the repo.
* At time t1 native git writes temporary files in the pack folder
setting the mtime of the pack folder to t1.
* A fetch request causes JGit to search for new packfiles and JGit
remembers this scan in a Filesnapshot on the packs folder. Since the gc
is not finished JGit doesn't see any new packfiles.
* The fetch is processed and the gc ends while the filesystem timer is
still t1. GC writes a new packfile and deletes the old packfile.
* 3 seconds later another request arrives. JGit does not yet know about
the new packfile but is also not rescanning the pack folder because it
cached that the last scan happened at time t1 and pack folder's mtime is
also t1. Now JGit will not be able to resolve any object contained in
this new pack. This behavior may be persistent if objects referenced by
the ref/meta/config branch are affected so gerrit can't read permissions
stored in the refs/meta/config branch anymore and will not allow any
pushes anymore. The pack folder will not change its mtime and therefore
no rescan will take place.
Change-Id: I3efd0ccffeb97b01207dc3e7a6b85c6b06928fad
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Fix JGits merge-base calculation in case of inconsistent commit times.
JGit was potentially failing to compute correct merge-bases when the
commit times where inconsistent (a parent commit was younger than a
child commit). The code in MergeBaseGenerator was aware of the fact that
sometimes the discovery of a merge base x can occur after the parents of
x have been seen (see comment in #carryOntoOne()). But in the light of
inconsistent commit times it was possible that these parents of a
merge-base have already been returned as a merge-base.
This commit fixes the bug by buffering all commits generated by
MergeBaseGenerator. It is expected that this buffer will be small
because the number of merge-bases will be small. Additionally a new
flag is used to mark the ancestors of merge-bases. This allows to filter
out the unwanted commits.
Bug: 507584
Change-Id: I9cc140b784c3231b972bd2c3de61a789365237ab
Use Oxygen M3 Orbit repository which provides the bundles built using
the new orbit-recipe based build.
CQ: 11658
Change-Id: I7f3dcc966732b32830c75d5daa55383bd028d182
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Java 8 fixed the silent flush during close issue by
FilterOutputStream (base class of BufferedOutputStream)
using try-with-resources to close the stream, getting a
behavior matching what JGit's SafeBufferedOutputStream
was doing:
try {
flush();
} finally {
out.close();
}
With Java 8 as the minimum required version to run JGit
it is no longer necessary to override close() or have
this class. Deprecate the class, and use the JRE's version
of close.
Change-Id: Ic0584c140010278dbe4062df2e71be5df9a797b3
This method pair allows the caller to read and modify the description
file that is traditionally used by gitweb and cgit when rendering a
repository on the web.
Gerrit Code Review has offered this feature for years as part of
its GitRepositoryManager interface, but its fundamentally a feature
of JGit and its Repository abstraction.
git-core typically initializes a repository with a default value
inside the description file. During getDescription() this string
is converted to null as it is never a useful description.
Change-Id: I0a457026c74e9c73ea27e6f070d5fbaca3439be5
In case a value is used which isn’t a power of 2 there will be a high
chance of java.lang.ArrayIndexOutBoundsException and
org.eclipse.jgit.errors.CorruptObjectException due to a mismatching
assumption for the DfsBlockCache#blockSizeShift parameter.
Change-Id: Ib348b3704edf10b5f93a3ffab4fa6f09cbbae231
Signed-off-by: Philipp Marx <smigfu@googlemail.com>
* GC.tooManyLooseObjects() always responded true since the loop missed
to advance the iterator so it always incremented until the threshold was
exceeded.
* Also fix loop exit criterion which was off by 1.
* Add some tests.
Change-Id: I70976dfaa026efbcf3c46bd45941f37277a18e04
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Previously, the streamFileThreshold, the threshold at which a file
would be streamed rather than loaded entirely into memory, was only
configurable on a global basis.
This commit makes this threshold configurable on a per-loader basis.
Bug: 490404
Change-Id: I492c18c3155dbf56eedda9044a61d76120fd75f9
Signed-off-by: Kevin Corcoran <kevin.corcoran@puppetlabs.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Git barfs on these (and they don't make any sense), so we certainly
shouldn't write them.
Change-Id: I3faf8554a05f0fd147be2e63fbe55987d3f88099
Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Upgrade to match the version used on Gerrit's master branch.
Requires a couple of modifications to make the tests work:
- Remove source_under_test parameters from java_test calls.
- Add vm_args with explicit setting of tmpdir location for http
tests. This is needed due to upstream changes in temporary
directory handling [1].
[1] https://github.com/facebook/buck/issues/946
Change-Id: I5d5dd5edc335d44b118e8587f69ba89b83fc7fbb
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-4.5:
Unconditionally close repositories in RepositoryCache.clear()
Fix eviction of repositories with negative usage count
Adapt to parameter removed from
RepositoryCache.unregisterAndCloseRepository().
Change-Id: I7087667056ced401a3b3a027977f2715cd77a1c5
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If the repository close method was called twice (or more) for one open,
the usage count became negative and the repository was never be evicted
from the cache because the method checking if repository is expired was
not considering negative usage count.
Change-Id: I18a80c415c54c37d1b9def2b311ff2d0afa455ca
Signed-off-by: Hugo Arès <hugo.ares@ericsson.com>
Symlinks on MacOS are written as UTF-8 NFD, but
readSymbolicLink().toString() converts to NFC with potentially fewer
bytes. May occur in particular if the link target has non-ASCII
characters for which the NFC and NFD encodings differ. This may lead
to an EOFException: Short read of block.
This causes all kinds of weird effects in EGit, ranging from failing
rebases (which report the exception to the user) to EGit decorations in
the navigator silently disappearing (and never coming back).
* Rename readContentAsNormalizedString() to readSymlinkTarget() as it's
called only for symlinks. Also make it protected.
* Fix by allowing the read to succeed even if less than the expected
number of bytes are returned by the entry's input stream.
* Override in FileTreeIterator to use fs.readSymlink() directly.
Includes a new MacOS-only test.
Change-Id: I264c5972d67b1cbb1ed690580f5706e671b9affd
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
CheckoutCommand was not returning updated and removed files in case of
an overall status of NONDELETED. That's status which occurs especially
on the Windows platform when Checkout wanted to delete files but the
filesystem doesn't allow this. The situation is more seldom on linux/mac
because open filehandles don't stop a deletion attempt and checkout
succeeds more often.
Change-Id: I4828008e58c09bd8f9edaf0f7eda0a79c629fb57
* stable-4.5:
Fix carrying over flags during a RevWalk
Change-Id: Ibf4573c5664271dfa7a6ecc3ede6eaad749f89d8
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
There was a bug when carrying over flags from a merge commit to its
non-first parents. The first parent of a merge commit was handled
differently and correct but the non-first parents are handled by a
recursive algorithm. Flags should be copied from the root merge commit
to parent-2, to grandparent-2, ... up to the limit of STACK_DEPTH==500
parents-levels. But the recursive algorithm was always copying only to
the direct parents of the merge commit and not the grand*-parents.
This seems to be no problem when commits are handled in a strict date
order because then copying only one level is no problem if children are
handled before parents. But when commits are not seperated anymore by
distinctive correct dates (e.g. because all commits have the same date)
then it may happen that a merge-parent is handled before the merge
commit and when dealing later with the merge commit one has to copy
flags down to more than one level
Bug: 501211
Change-Id: I2d79a7cf1e3bce21a490905ccd9d5e502d7b8421
Change-Id: I26d69fb6d35c6fb120360ef143d1b1f565d4014c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Adds a JGit built-in implementation of the "git lfs smudge" filter. This
filter should do the same as the one described in [1] besides that it
only supports the local case when the lfs objects are already present in
the media directory. Remote cases where download of LFS objects from an
LFS server is needed will be done in a later commit.
[1] https://github.com/github/git-lfs/blob/master/docs/man/git-lfs-smudge.1.ronn
Change-Id: I8ff661d4edd3667ef7f86f3b4fa33e568eb4c8f4
Adds a JGit built-in implementation of the "git lfs clean" filter. This
filter should do the same as the one described in [1]. But since this
filter is written in Java and can be called by JGit without forking new
processes it should be much faster
[1]
https://github.com/github/git-lfs/blob/master/docs/man/git-lfs-clean.1.ronn
Change-Id: If60e387e97870245b4bd765eda6717eb84cffb1d
JGit supports smudge filters defined in repository configuration. The
filters are implemented as external programs filtering content by
accepting the original content (as seen in git's object database) on
stdin and which emit the filtered content on stdout. This content is
then written to the file in the working tree. To run such a filter JGit
has to start an external process and pump data into/from this process.
This commit adds support for built-in smudge filters which are
implemented in Java and which are executed by jgit's main thread. When a
filter is defined in the configuration as
"jgit://builtin/<filterDriverName>/smudge" then JGit will lookup in a
static map whether a builtin filter is registered under this name. If
found such a filter is called to do the filtering.
The functionality in this commit requires that a program using JGit
explicitly calls the JGit API to register built-in implementations for
specific smudge filters. In follow-up commits configuration parameters
will be added which trigger such registrations.
Change-Id: Ia743aa0dbed795e71e5792f35ae55660e0eb3c24
JGit supports clean filters defined in repository configuration. The
filters are implemented as external programs filtering content by
accepting the original content (as seen in the working tree) on stdin
and which emit the filtered content on stdout. To run such a filter JGit
has to start an external process and pump data into/from this process.
This commit adds support for clean filters which are implemented
in Java and which are executed by jgit's main thread. When a filter is
defined in the configuration as
"jgit://builtin/<filterDriverName>/clean" then JGit will lookup in a
static map whether a filter is registered under this name. If found
such a filter is called to do the filtering.
The functionality in this commit requires that a program using JGit
explicitly calls the JGit API to register built-in implementations for
specific clean filters. In follow-up commits configuration parameters
will be added which trigger such registrations. Other commits will add
implementations for lfs filters.
Change-Id: I0344d3c54801c9a46e5a606c5df17e5f2e17b2be
BranchConfig treated this config property as a boolean, but git also
allows the values "preserve" and "interactive". Config property
pull.rebase also allows the same values.
Replace private enum PullCommand.PullRebaseMode by new public enum
BranchConfig.BranchRebaseMode and adapt all uses. Add a new setter to
PullCommand.
Note: PullCommand will treat "interactive" like "true", i.e., as a
non-interactive rebase. Not sure how "interactive" should be handled.
At least it won't balk on it.
Bug: 499482
Change-Id: I7309360f5662b2c2efa1bd8ea6f112c63cf064af
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Change-Id: I6691b454404dd4db3c690ecfc7515de765bc2ef7
Signed-off-by: Martin Goellnitz <m.goellnitz@outlook.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
- enhance FS.readPipe to throw an exception if the external command
fails to enable the caller to handle the command failure
- reduce log level to warning if system git config does not exist
- improve log message
Bug: 476639
Change-Id: I94ae3caec22150dde81f1ea8e1e665df55290d42
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Without the bridge JGit tests don't show log output in Eclipse console.
Change-Id: I7acce1f1787960b5ca98377cb5c7f599a8a220b5
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Since 4.0 JGit does no longer support Java versions older than Java 7 so
there is no need anymore to mention Java 7 in the class name.
Change-Id: Ic46c9d89a7e919ae4a69487fa06de0478d2b21f0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Refactor all of the push option support code to allocate the list
immediately before parsing the options section off the stream.
Move option support down to ReceivePack instead of BaseReceivePack.
Push options are specific to the ReceivePack protocol and are not
likely to appear in the 4 year old subscription proposal. These
changes are OK before JGit 4.5 ships as no consumer should be relying
on these new APIs.
Change-Id: Ib07d18c877628aba07da07cd91875f918d509c49
Initialize pushOptions when we decide to use them, instead of when we
advertise them.
In the case of HTTP the advertisement is in a different network
request, hence in a different instance of the BaseReceivePack.
Change-Id: I094c60942e04de82cb6d8433c9cd43a46ffae332
Signed-off-by: Stefan Beller <sbeller@google.com>
DfsRefDatabase#compareAndPut had a vague semantics for reference
matching. Because of this, an operation to make a symbolic
reference had been broken for some DFS implementations even if they
followed the contract of compareAndPut. The clarified semantics
requires the implementations to satisfy the followings:
* Matching references should be both symbolic references or both
object ID references.
* If both are symbolic references, both should have the same target
name.
* If both are object ID references, both should have the same object
ID.
This semantics is defined based on
https://git.eclipse.org/r/#/c/77416/. Before this commit,
DfsRefDatabase couldn't see the target of symbolic references.
InMemoryRepository is changed to comply with the new semantics. This
semantics change can affect the existing DFS implementations that only
checks object IDs. This commit adds two tests that the previous
InMemoryRepository couldn't pass.
Change-Id: I6c6b5d3cc8241a81f4a37782381c88e8a59fdf15
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
The RepositoryTestCase hierarchy no longer comes from TestCase, so all
test methods must have @Test.
Fix one test that was broken but never run; fortunately this was just
a typo in the test code.
Change-Id: I3ac8ccdab5e2d5539c63d7b0a88d8bdb0c5ff66e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This fixes the tests failed in JDK8.
FS uses java.nio API to get file attributes. The timestamps obtained
from that API are more precise than the ones from
java.io.File#lastModified() since Java8.
This difference accidentally makes JGit detect newly added files as
smudged. Use the precised timestamp to avoid this false positive.
Bug: 500058
Change-Id: I9e587583c85cb6efa7562ad6c5f26577869a2e7c
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
This will be used by EGit for implementing commit amend in the staging
view (see Idcd1efeeee8b3065bae36e285bfc0af24ab1e88f).
Change-Id: Ice9ebbb1c0c3314c679f4db40cdd3664f61c27c3
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This fixes the warning "src/ is missing from source.."
Change-Id: I166e3a6a3d5230e4110d3283ec4dbc7d1dfe6732
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* changes:
LfsProtocolServlet: Allow access to objects in request
LfsProtocolServlet: Allow getLargeFileRepository to raise exceptions
Remove references to org.eclipse.jgit.java7
cgit changed the --depth parameter to mean the total depth of history
rather than the depth of ancestors to be returned [1]. JGit still uses
the latter meaning, so update it to match cgit.
depth=0 still means a non-shallow clone. depth=1 now means only the
wants rather than the wants and their direct parents.
This is accomplished by changing the semantic meaning of "depth" in
UploadPack and PackWriter to mean the total depth of history desired,
while keeping "depth" in DepthWalk.{RevWalk,ObjectWalk} to mean
the depth of traversal. Thus UploadPack and PackWriter always
initialize their DepthWalks with "depth-1".
[1] upload-pack: fix off-by-one depth calculation in shallow clone
https://code.googlesource.com/git/+/682c7d2f1a2d1a5443777237450505738af2ff1a
Change-Id: I87ed3c0f56c37e3491e367a41f5e555c4207ff44
Signed-off-by: Terry Parker <tparker@google.com>
When fetching from a shallow clone, the client sends "have" lines
to tell the server about objects it already has and "shallow" lines
to tell where its local history terminates. In some circumstances,
the server fails to honor the shallow lines and fails to return
objects that the client needs.
UploadPack passes the "have" lines to PackWriter so PackWriter can
omit them from the generated pack. UploadPack processes "shallow"
lines by calling RevWalk.assumeShallow() with the set of shallow
commits. RevWalk creates and caches RevCommits for these shallow
commits, clearing out their parents. That way, walks correctly
terminate at the shallow commits instead of assuming the client has
history going back behind them. UploadPack converts its RevWalk to an
ObjectWalk, maintaining the cached RevCommits, and passes it to
PackWriter.
Unfortunately, to support shallow fetches the PackWriter does the
following:
if (shallowPack && !(walk instanceof DepthWalk.ObjectWalk))
walk = new DepthWalk.ObjectWalk(reader, depth);
That is, when the client sends a "deepen" line (fetch --depth=<n>)
and the caller has not passed in a DepthWalk.ObjectWalk, PackWriter
throws away the RevWalk that was passed in and makes a new one. The
cleared parent lists prepared by RevWalk.assumeShallow() are lost.
Fortunately UploadPack intends to pass in a DepthWalk.ObjectWalk.
It tries to create it by calling toObjectWalkWithSameObjects() on
a DepthWalk.RevWalk. But it doesn't work: because DepthWalk.RevWalk
does not override the standard RevWalk#toObjectWalkWithSameObjects
implementation, the result is a plain ObjectWalk instead of an
instance of DepthWalk.ObjectWalk.
The result is that the "shallow" information is thrown away and
objects reachable from the shallow commits can be omitted from the
pack sent when fetching with --depth from a shallow clone.
Multiple factors collude to limit the circumstances under which this
bug can be observed:
1. Commits with depth != 0 don't enter DepthGenerator's pending queue.
That means a "have" cannot have any effect on DepthGenerator unless
it is also a "want".
2. DepthGenerator#next() doesn't call carryFlagsImpl(), so the
uninteresting flag is not propagated to ancestors there even if a
"have" is also a "want".
3. JGit treats a depth of 1 as "1 past the wants".
Because of (2), the only place the UNINTERESTING flag can leak to a
shallow commit's parents is in the carryFlags() call from
markUninteresting(). carryFlags() only traverses commits that have
already been parsed: commits yet to be parsed are supposed to inherit
correct flags from their parent in PendingGenerator#next (which
doesn't happen here --- that is (2)). So the list of commits that have
already been parsed becomes relevant.
When we hit the markUninteresting() call, all "want"s, "have"s, and
commits to be unshallowed have been parsed. carryFlags() only
affects the parsed commits. If the "want" is a direct parent of a
"have", then it carryFlags() marks it as uninteresting. If the "have"
was also a "shallow", then its parent pointer should have been null
and the "want" shouldn't have been marked, so we see the bug. If the
"want" is a more distant ancestor then (2) keeps the uninteresting
state from propagating to the "want" and we don't see the bug. If the
"shallow" is not also a "have" then the shallow commit isn't parsed
so (2) keeps the uninteresting state from propagating to the "want
so we don't see the bug.
Here is a reproduction case (time flowing left to right, arrows
pointing to parents). "C" must be a commit that the client
reports as a "have" during negotiation. That can only happen if the
server reports it as an existing branch or tag in the first round of
negotiation:
A <-- B <-- C <-- D
First do
git clone --depth 1 <repo>
which yields D as a "have" and C as a "shallow" commit. Then try
git fetch --depth 1 <repo> B:refs/heads/B
Negotiation sets up: have D, shallow C, have C, want B.
But due to this bug B is marked as uninteresting and is not sent.
Change-Id: I6e14b57b2f85e52d28cdcf356df647870f475440
Signed-off-by: Terry Parker <tparker@google.com>
The bundle org.eclipse.jgit.java7 was removed in 4.0.
Remove references to it from the README.md.
Remove reference to it from org.eclipse.jgit.test/.project, which
causes an error message when opening the project in Eclipse:
Resource '/org.eclipse.jgit.java7' does not exist.
Change-Id: If0dbd562dcd60550bec3c0f793289474b7624bce
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
When doing an incremental fetch from JGit, "have" commits are marked
as "uninteresting". In a non-shallow fetch, when the RevWalk hits an
"uninteresting" commit it marks the commit's corresponding tree as
uninteresting. That has the effect of dropping those trees and all the
trees and blobs they reference out of the thin pack returned to the
client.
However, shallow fetches use a DepthWalk to limit the RevWalk, which
nearly always causes the RevWalk to terminate before encountering the
"have" commits. As a result the pack created for the incremental fetch
never encounters "uninteresting" tree objects and thus includes
duplicate objects that it knows the client already has.
Change-Id: I7b1f7c3b0d83e04d34cd2fa676f1ad4fec904c05
Signed-off-by: Terry Parker <tparker@google.com>
Previously jgit would attempt to clean git repositories that had not
been committed by calling a non-recursive delete on them, which would
fail as they are directories. This commit addresses that issue in the
following ways.
Repositories are skipped in a default clean, similarly to cgit and only
cleaned when the force flag is applied. When the force flag is applied
repositories are deleted using a recursive delete call. The force flag
and setForce method are added here to CleanCommand to support this
change.
Bug: 498367
Change-Id: Ib6cfff65a033d0d0f76395060bf76719e13fc467
Signed-off-by: Matthaus Owens <matthaus@puppetlabs.com>
This commit adds some test coverage to cleaning a repository with a
submodule, which did not previously exist.
Bug: 498367
Change-Id: Ia5c4e4cc53488800dd486f8556dc57656783f1c4
Signed-off-by: Matthaus Owens <matthaus@puppetlabs.com>
This prevents the warning:
Potential heap pollution via varargs parameter
The method doesn't do any casting of types that would cause the heap
pollution, so it should be safe to add @SafeVarArgs.
See [1] for information about this warning.
[1] http://stackoverflow.com/a/12462259/381622
Change-Id: Ic6d252915ea44b4f1c385afecb98906cd2c54382
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-4.4:
JGit v4.4.1.201607150455-r
RefDirectory: remove ref lock file for following ref dir removal
Change-Id: Ifc8a782efd7f2f991e70ad2a3691a8dba66c7554
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Gerrit's superproject subscription feature uses RefSpecs to formalize
the ACLs of when the superproject subscription feature is allowed.
As this is a slightly different use case than describing a local/remote
pair of refs, we need to be more permissive. Specifically we want to allow:
refs/heads/*
refs/heads/*:refs/heads/master
refs/heads/master:refs/heads/*
Introduce a new constructor, that allows constructing these RefSpecs.
Change-Id: I46c0bea9d876e61eb2c8d50f404b905792bc72b3
Signed-off-by: Stefan Beller <sbeller@google.com>
We had a case in Gerrits superproject subscriptions where
'refs/heads/' was configured with the intention to mean 'refs/heads/*'.
The first expression lacks the '*', which is why it is not considered
a wildcard but it was considered valid and so was not found early to be
a typo.
Refs are not allowed to end with '/' anyway, so add a check for that.
Change-Id: I3ffdd9002146382acafb4fbc310a64af4cc1b7a9
Signed-off-by: Stefan Beller <sbeller@google.com>
Example usage:
$ ./jgit push \
--push-option "Reviewer=j.doe@example.org" \
--push-option "<arbitrary string>" \
origin HEAD:refs/for/master
Stefan Beller has also made an equivalent change to CGit:
http://thread.gmane.org/gmane.comp.version-control.git/299872
Change-Id: I6797e50681054dce3bd179e80b731aef5e200d77
Signed-off-by: Dan Wang <dwwang@google.com>
* stable-4.4:
Log if Repository.useCnt becomes negative
Time based eviction strategy for repository cache
Add method to read time unit from config
Align include.path max depth with native git
Config load should not fail on unsupported or nonexistent include path
Allow using JDK 7 bootclasspath when compiling JGit using Java 8
Extract work queue to allow reusing it
Change-Id: I6aeedb1cb8b0c3068af344a719c80a03ae68fc23
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
When Repository.close() decrements the useCount to 0 currently the cache
immediately evicts the repository from WindowCache and RepositoryCache.
This leads to I/O overhead on busy repositories because pack files and
references are inserted and deleted from the cache frequently.
This commit defers the eviction of a repository from the caches until
last use of the repository is older than time to live. The eviction is
handled by a background task running periodically.
Add two new configuration parameters:
* core.repositoryCacheExpireAfter: cache entries are evicted if the
cache entry wasn't accessed longer than this time in milliseconds
* core.repositoryCacheCleanupDelay: defines the interval in milliseconds
for running a background task evicting expired cache entries. If set to
-1 the delay is set to min(repositoryCacheExpireAfter, 10 minutes). If
set to 0 the time based eviction is switched off and no background task
is started. If time based eviction is switched off the JVM can still
evict cache entries if heap memory is running low.
Change-Id: I4a0214ad8b4a193985dda6a0ade63b70bdb948d7
Also-by: Matthias Sohn <matthias.sohn@sap.com>
Also-by: Hugo Arès <hugo.ares@ericsson.com>
Also-by: Sasa Zivkov <sasa.zivkov@sap.com>
If the client sent a well-formed enough request to see it wants to use
side-band-64k for status reporting (meaning its a modern client), but
any other command record was somehow invalid (e.g. corrupt SHA-1)
report the parsing exception using channel 3. This allows clients to
see the failure and know the server will not be continuing.
git-core and JGit clients send all commands and then start a sideband
demux before sending the pack. By consuming all commands first we get
the client into a state where it can see and respond to the channel 3
server failure.
This behavior is useful on HTTPS connections when the client is buggy
and sent a corrupt command, but still managed to request side-band-64k
in the first line.
Change-Id: If385b91ceb9f024ccae2d1645caf15bc6b206130
Matthias Sohn