- fix handling of interrupts in FileStoreAttributes#saveToConfig
- increase retry wait time to 100ms
- don't wait after last retry
- dont retry if failure is caused by another exception than
LockFailedException
Change-Id: I108c012717d2bcce71f2c6cb9cf0879de704ebc2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The method org.eclipse.jgit.util.FS.supportsAtomicCreateNewFile()
should default to true as mentioned in docs [1]
org.eclipse.jgit.util.FS_POSIX.supportsAtomicCreateNewFile() method
will set the value to false if the git config
core.supportsatomiccreatenewfile is not set.
It should default to true if the configuration is undefined.
[1]
4169a95a65/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_POSIX.java (L372)
Bug: 544164
Change-Id: I16ccf989a89da2cf4975c200b3228b25ba4c0d55
Signed-off-by: Vishal Devgire <vishaldevgire@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
We can't add this method to the super class StoredConfig since that
abstracts from filesystem storage. MockSystemReader.MockConfig is a
StoredConfig and is also used by tests for dfs based storage. Hence
remove this leaky abstraction.
This implies we always use the fallback FileStoreAttributes which means
a config file modification is considered racy within the first 2
seconds. This should not be an issue since typically configs change
rarely and re-reading a config within the racy period is relatively
cheap since configs are small.
Change-Id: Ia2615addc24a7cadf3c566ee842c6f4f07e159a5
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If no OpenPGP key is found in pubring.kbx, try the legacy secring.gpg.
This appears to be consistent with GPG[1].
[1] https://lists.gnupg.org/pipermail/gnupg-users/2015-December/054881.html
Bug: 549439
Change-Id: I1557fd9b1f555a9b521fcd57cd3caccbdbacbeda
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
* stable-5.4: (82 commits)
Export all packages of o.e.j.ant and o.e.j.archive bundles
Do not require test bundles to export all packages
Fix API problem filters
Increase severity of AmbiguousMethodReference to ERROR
[error prone] suppress AmbiguousMethodReference in AnyLongObjectId
[error prone] fix ReferenceEquality warning in CommitBuilder
[error prone] suppress NonAtomicVolatileUpdate warning in SimpleLruCache
[error prone] fix ReferenceEquality warning in CommitGraphPane#authorFor
[error prone] fix ReferenceEquality warning in RevWalk#isMergedInto
[error prone] fix ReferenceEquality warning in RefUpdate#updateImpl
[error prone] fix ReferenceEquality warning in static equals methods
[error prone] suppress AmbiguousMethodReference in AnyObjectId
[error prone] fix "FutureReturnValueIgnored" error in FS
Fix formatting and add missing braces in Repository#stripWorkDir
Repository: fix reference comparison of Files
MergeAlgorithm: Suppress Error Prone warning about reference equality
Fix NarrowingCompoundAssignment warnings from Error Prone
FS_POSIX: handle Files.getFileStore() failures
Fix OpenSshConfigTest#config
FileSnapshot: fix bug with timestamp thresholding
In LockFile#waitForStatChange wait in units of file time resolution
Cache FileStoreAttributeCache per directory
Fix FileSnapshot#save(long) and FileSnapshot#save(Instant)
Persist minimal racy threshold and allow manual configuration
Measure minimum racy interval to auto-configure FileSnapshot
Reuse FileUtils to recursively delete files created by tests
Fix FileAttributeCache.toString()
Add test for racy git detection in FileSnapshot
Repeat RefDirectoryTest.testGetRef_DiscoversModifiedLoose 100 times
Fix org.eclipse.jdt.core.prefs of org.eclipse.jgit.junit
Add missing javadoc in org.eclipse.jgit.junit
Enhance RepeatRule to report number of failures at the end
Fix FileSnapshotTests for filesystem with high timestamp resolution
Retry deleting test files in FileBasedConfigTest
Measure filesystem timestamp resolution already in test setup
Refactor FileSnapshotTest to use NIO APIs
Measure stored timestamp resolution instead of time to touch file
Handle CancellationException in FileStoreAttributeCache
Fix FileSnapshot#saveNoConfig
Use Instant for smudge time in DirCache and DirCacheEntry
Use Instant instead of milliseconds for filesystem timestamp handling
Workaround SecurityException in FS#getFsTimestampResolution
Fix NPE in FS$FileStoreAttributeCache.getFsTimestampResolution
FS: ignore AccessDeniedException when measuring timestamp resolution
Add debug trace for FileSnapshot
Use FileChannel.open to touch file and set mtime to now
Persist filesystem timestamp resolution and allow manual configuration
Increase bazel timeout for long running tests
Bazel: Fix lint warning flagged by buildifier
Update bazlets to latest version
Bazel: Add missing dependencies for ArchiveCommandTest
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
Add support for nanoseconds and microseconds for Config#getTimeUnit
Optionally measure filesystem timestamp resolution asynchronously
Delete unused FileTreeIteratorWithTimeControl
FileSnapshot#equals: consider UNKNOWN_SIZE
Timeout measuring file timestamp resolution after 2 seconds
Fix RacyGitTests#testRacyGitDetection
GlobalBundleCache: Fix ClassNewInstance warning from Error Prone
IncorrectObjectTypeException: Fix typos in constructors' Javadoc
Change RacyGitTests to create a racy git situation in a stable way
Deprecate Constants.CHARACTER_ENCODING in favor of StandardCharsets.UTF_8
Fix non-deterministic hash of archives created by ArchiveCommand
Update Maven plugins ecj, plexus, error-prone
Update Maven plugins and cleanup Maven warnings
Make inner classes static where possible
Error Prone: Increase severity of NonOverridingEquals to ERROR
Error Prone: Increase severity of ImmutableEnumChecker to ERROR
GitDateParser#ParseableSimpleDateFormat: Make formatStr private final
BatchRefUpdateTest: Suppress ImmutableEnumChecker warning
PacketLineIn: Suppress comparison warnings for END and DELIM
FileSnapshot#toString: Suppress ReferenceEquality warnings
Blame: Suppress ReferenceEquality warning for RevCommit instances
Fix API problem filters
pgm: add missing optional dependency to org.tukaani:xz
NetscapeCookieFile: Make hash static and group overloaded write
NetscapeCookieFile: Javadoc fixes
Config: Handle reference-equality warning (and empty javadoc)
Error Prone: Increase severity of ShortCircuitBoolean to ERROR
ObjectWalk: Prefer boolean operators over logical operators in comparisons
BasePackFetchConnection: Prefer boolean operators over logical operators in comparisons
PackWriter: Prefer boolean operators over logical operators in comparisons
Change-Id: I825fd55bcb5345fb7afe066bf54ca50325f40acb
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Comparing with UTF_8 constant in StandardCharsets doesn't require to use
equals.
Change-Id: I6c73a929367f32c9e76ce99f6c0af268480d9230
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
It's not important to update time field, scalability is more important
than perfect LRU ordering of cache entries.
Change-Id: I22466c580cd3613b81e1989130b2724af9d6c466
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Implement a helper method suppressing the ReferenceEquality error prone
warning and use it to fix this warning in static equals methods where
this comparison is used to implement fast path of static equals
implementation.
See https://errorprone.info/bugpattern/ReferenceEquality
Change-Id: I33538a3406007d24efec3a504e031ca1069572ed
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Move the implementation of the static equals() method to a new method
and suppress the error. Deprecate the old method to signal that we
intend to remove it in the next major release.
See https://errorprone.info/bugpattern/AmbiguousMethodReference
Change-Id: I5e29c97f4db3e11770be589a6ccd785e2c9ac7f2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Error Prone reports:
[ReferenceEquality] Comparison using reference equality instead of
value equality
The END_EDIT instance is used as a marker, and thus it's OK to use
a reference equality comparison. Factor the comparison to a method
and add a suppression.
Change-Id: I7d9dc1fa21f46c984787056b0b5d163e313026a6
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Error Prone reports:
[NarrowingCompoundAssignment] Compound assignments from long to int
hide lossy casts
and
[NarrowingCompoundAssignment] Compound assignments from int to byte
hide lossy casts
See https://errorprone.info/bugpattern/NarrowingCompoundAssignment
Fix the warnings by adding explicit casts or changing types as
necessary.
Now that all occurrences of the warning are fixed, increase its
severity to ERROR.
Change-Id: Idb3670e6047b146ae37daee07212ff9455512623
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Android unconditionally throws a SecurityException;[1] getFileStore()
is not supported. Catch the exception and don't attempt the hard-
linking atomic file mechanism.
[1] https://android.googlesource.com/platform/libcore/+/21e6175e25
Bug: 548947
Change-Id: Idfba2d9dbcbc80ea15ab2ae7889e5142444c1581
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
* stable-5.3:
Fix OpenSshConfigTest#config
FileSnapshot: fix bug with timestamp thresholding
In LockFile#waitForStatChange wait in units of file time resolution
Cache FileStoreAttributeCache per directory
Fix FileSnapshot#save(long) and FileSnapshot#save(Instant)
Persist minimal racy threshold and allow manual configuration
Measure minimum racy interval to auto-configure FileSnapshot
Reuse FileUtils to recursively delete files created by tests
Fix FileAttributeCache.toString()
Add test for racy git detection in FileSnapshot
Repeat RefDirectoryTest.testGetRef_DiscoversModifiedLoose 100 times
Fix org.eclipse.jdt.core.prefs of org.eclipse.jgit.junit
Add missing javadoc in org.eclipse.jgit.junit
Enhance RepeatRule to report number of failures at the end
Fix FileSnapshotTests for filesystem with high timestamp resolution
Retry deleting test files in FileBasedConfigTest
Measure filesystem timestamp resolution already in test setup
Refactor FileSnapshotTest to use NIO APIs
Measure stored timestamp resolution instead of time to touch file
Handle CancellationException in FileStoreAttributeCache
Fix FileSnapshot#saveNoConfig
Use Instant for smudge time in DirCache and DirCacheEntry
Use Instant instead of milliseconds for filesystem timestamp handling
Workaround SecurityException in FS#getFsTimestampResolution
Fix NPE in FS$FileStoreAttributeCache.getFsTimestampResolution
FS: ignore AccessDeniedException when measuring timestamp resolution
Add debug trace for FileSnapshot
Use FileChannel.open to touch file and set mtime to now
Persist filesystem timestamp resolution and allow manual configuration
Increase bazel timeout for long running tests
Bazel: Fix lint warning flagged by buildifier
Update bazlets to latest version
Bazel: Add missing dependencies for ArchiveCommandTest
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
Add support for nanoseconds and microseconds for Config#getTimeUnit
Optionally measure filesystem timestamp resolution asynchronously
Delete unused FileTreeIteratorWithTimeControl
FileSnapshot#equals: consider UNKNOWN_SIZE
Timeout measuring file timestamp resolution after 2 seconds
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Deprecate Constants.CHARACTER_ENCODING in favor of StandardCharsets.UTF_8
Fix non-deterministic hash of archives created by ArchiveCommand
Update Maven plugins ecj, plexus, error-prone
Update Maven plugins and cleanup Maven warnings
Make inner classes static where possible
Fix API problem filters
Change-Id: Iec3ad6ccc194582cb844310dc172c3103dae4457
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.2:
Fix OpenSshConfigTest#config
FileSnapshot: fix bug with timestamp thresholding
In LockFile#waitForStatChange wait in units of file time resolution
Cache FileStoreAttributeCache per directory
Fix FileSnapshot#save(long) and FileSnapshot#save(Instant)
Persist minimal racy threshold and allow manual configuration
Measure minimum racy interval to auto-configure FileSnapshot
Reuse FileUtils to recursively delete files created by tests
Fix FileAttributeCache.toString()
Add test for racy git detection in FileSnapshot
Repeat RefDirectoryTest.testGetRef_DiscoversModifiedLoose 100 times
Fix org.eclipse.jdt.core.prefs of org.eclipse.jgit.junit
Add missing javadoc in org.eclipse.jgit.junit
Enhance RepeatRule to report number of failures at the end
Fix FileSnapshotTests for filesystem with high timestamp resolution
Retry deleting test files in FileBasedConfigTest
Measure filesystem timestamp resolution already in test setup
Refactor FileSnapshotTest to use NIO APIs
Measure stored timestamp resolution instead of time to touch file
Handle CancellationException in FileStoreAttributeCache
Fix FileSnapshot#saveNoConfig
Use Instant for smudge time in DirCache and DirCacheEntry
Use Instant instead of milliseconds for filesystem timestamp handling
Workaround SecurityException in FS#getFsTimestampResolution
Fix NPE in FS$FileStoreAttributeCache.getFsTimestampResolution
FS: ignore AccessDeniedException when measuring timestamp resolution
Add debug trace for FileSnapshot
Use FileChannel.open to touch file and set mtime to now
Persist filesystem timestamp resolution and allow manual configuration
Increase bazel timeout for long running tests
Bazel: Fix lint warning flagged by buildifier
Update bazlets to latest version
Bazel: Add missing dependencies for ArchiveCommandTest
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
Add support for nanoseconds and microseconds for Config#getTimeUnit
Optionally measure filesystem timestamp resolution asynchronously
Delete unused FileTreeIteratorWithTimeControl
FileSnapshot#equals: consider UNKNOWN_SIZE
Timeout measuring file timestamp resolution after 2 seconds
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Deprecate Constants.CHARACTER_ENCODING in favor of
StandardCharsets.UTF_8
Fix non-deterministic hash of archives created by ArchiveCommand
Update Maven plugins ecj, plexus, error-prone
Update Maven plugins and cleanup Maven warnings
Make inner classes static where possible
Fix API problem filters
Change-Id: I238adfd3080a5fed9d64c3c757297da6ea893918
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.1:
Fix OpenSshConfigTest#config
FileSnapshot: fix bug with timestamp thresholding
In LockFile#waitForStatChange wait in units of file time resolution
Cache FileStoreAttributeCache per directory
Fix FileSnapshot#save(long) and FileSnapshot#save(Instant)
Persist minimal racy threshold and allow manual configuration
Measure minimum racy interval to auto-configure FileSnapshot
Reuse FileUtils to recursively delete files created by tests
Fix FileAttributeCache.toString()
Add test for racy git detection in FileSnapshot
Repeat RefDirectoryTest.testGetRef_DiscoversModifiedLoose 100 times
Fix org.eclipse.jdt.core.prefs of org.eclipse.jgit.junit
Add missing javadoc in org.eclipse.jgit.junit
Enhance RepeatRule to report number of failures at the end
Fix FileSnapshotTests for filesystem with high timestamp resolution
Retry deleting test files in FileBasedConfigTest
Measure filesystem timestamp resolution already in test setup
Refactor FileSnapshotTest to use NIO APIs
Measure stored timestamp resolution instead of time to touch file
Handle CancellationException in FileStoreAttributeCache
Fix FileSnapshot#saveNoConfig
Use Instant for smudge time in DirCache and DirCacheEntry
Use Instant instead of milliseconds for filesystem timestamp handling
Workaround SecurityException in FS#getFsTimestampResolution
Fix NPE in FS$FileStoreAttributeCache.getFsTimestampResolution
FS: ignore AccessDeniedException when measuring timestamp resolution
Add debug trace for FileSnapshot
Use FileChannel.open to touch file and set mtime to now
Persist filesystem timestamp resolution and allow manual configuration
Increase bazel timeout for long running tests
Bazel: Fix lint warning flagged by buildifier
Update bazlets to latest version
Bazel: Add missing dependencies for ArchiveCommandTest
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
Add support for nanoseconds and microseconds for Config#getTimeUnit
Optionally measure filesystem timestamp resolution asynchronously
Delete unused FileTreeIteratorWithTimeControl
FileSnapshot#equals: consider UNKNOWN_SIZE
Timeout measuring file timestamp resolution after 2 seconds
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Deprecate Constants.CHARACTER_ENCODING in favor of StandardCharsets.UTF_8
Fix non-deterministic hash of archives created by ArchiveCommand
Update Maven plugins ecj, plexus, error-prone
Update Maven plugins and cleanup Maven warnings
Make inner classes static where possible
Fix API problem filters
Change-Id: Ia57385b2a60f48a5317c8d723721c235d7043a84
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Increase the safety factor to 2.5x for extra safety if max of measured
timestamp resolution and measured minimal racy threshold is < 100ms, use
1.25 otherwise since for large filesystem resolution values the
influence of finite resolution of the system clock should be negligible.
Before, not yet using the newly introduced minRacyThreshold measurement,
the threshold was 1.1x FS resolution, and we could issue the
following sequence of events,
start
create-file
read-file (currentTime)
end
which had the following timestamps:
create-file 1564589081998
start 1564589082002
read 1564589082003
end 1564589082004
In this case, the difference between create-file and read is 5ms,
which exceeded the 4ms FS resolution, even though the events together
took just 2ms of runtime.
Reproduce with:
bazel test --runs_per_test=100 \
//org.eclipse.jgit.test:org_eclipse_jgit_internal_storage_file_FileSnapshotTest
The file system timestamp resolution is 4ms in this case.
This code assumes that the kernel and the JVM use the same clock that
is synchronized with the file system clock. This seems plausible,
given the resolution of System.currentTimeMillis() and the latency for
a gettimeofday system call (typically ~1us), but it would be good to
justify this with specifications.
Also cover a source of flakiness: if the test runs under extreme load,
then we could have
start
create-file
<long delay>
read
end
which would register as an unmodified file. Avoid this by skipping the
test if end-start is too big.
[msohn]:
- downported from master to stable-5.1
- skip test if resolution is below 10ms
- adjust safety factor to 1.25 for resolutions above 100ms
Change-Id: I87d2cf035e01c44b7ba8364c410a860aa8e312ef
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Since we now measure file time resolution we can use it to replace the
hard coded wait time of 25ms. FileSnapshot#equals will return true until
the mtime of the old (o) and the new FileSnapshot (n) differ by at least
one file time resolution.
Change-Id: Icb713a80ce9eb929242ed083406bfb6650c72223
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Cache FileStoreAttributeCache entries since looking up FileStore for a
file may be expensive on some platforms.
Implement a simple LRU cache based on ConcurrentHashMap using a simple
long counter to order access to cache entries.
Change-Id: I4881fa938ad2f17712c05da857838073a2fc4ddb
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com>
Also-By: Marc Strapetz <marc.strapetz@syntevo.com>
Use the fallback timestamp resolution as already described in the
javadoc of these methods. Using zero file timestamp resolution doesn't
make sense.
Change-Id: Iaad2a0f99c3be3678e94980a0a368181b6aed38c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
To enable persisting the minimal racy threshold per FileStore add a
new config option to the user global git configuration:
- Config section is "filesystem"
- Config subsection is concatenation of
- Java vendor (system property "java.vendor")
- Java version (system property "java.version")
- FileStore's name, on Windows we use the attribute volume:vsn instead
since the name is not necessarily unique.
- separated by '|'
e.g.
"AdoptOpenJDK|1.8.0_212-b03|/dev/disk1s1"
The same prefix is used as for filesystem timestamp resolution, so
both values are stored in the same config section
- The config key for minmal racy threshold is "minRacyThreshold" as a
time value, supported time units are those supported by
DefaultTypedConfigGetter#getTimeUnit
- measure for 3 seconds to limit runtime which depends on hardware, OS
and Java version being used
If the minimal racy threshold is configured for a given FileStore the
configured value is used instead of measuring it.
When the minimal racy threshold was measured it is persisted in the user
global git configuration.
Rename FileStoreAttributeCache to FileStoreAttributes since this class
is now declared public in order to enable exposing all attributes in one
object.
Example:
[filesystem "AdoptOpenJDK|11.0.3|/dev/disk1s1"]
timestampResolution = 7000 nanoseconds
minRacyThreshold = 3440 microseconds
Change-Id: I22195e488453aae8d011b0a8e3276fe3d99deaea
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Also-By: Marc Strapetz <marc.strapetz@syntevo.com>
By running FileSnapshotTest#detectFileModified we found that the sum of
measured filesystem timestamp resolution and measured clock resolution
may yield a too small interval after a file has been modified which we
need to consider racily clean. In our tests we didn't find this behavior
on all systems we tested on, e.g. on MacOS using APFS and Java 8 and 11
this effect was not observed.
On Linux (SLES 15, kernel 4.12.14-150.22-default) we collected the
following test results using Java 8 and 11:
In 23-98% of 10000 test runs (depending on filesystem type and Java
version) the test failed, which means the effective interval which needs
to be considered racily clean after a file was modified is larger than
the measured file timestamp resolution.
"delta" is the observed interval after a file has been modified but
FileSnapshot did not yet detect the modification:
"resolution" is the measured sum of file timestamp resolution and clock
resolution seen in Java.
Java version filesystem failures resolution min delta max delta
1.8.0_212-b04 btrfs 98.6% 1 ms 3.6 ms 6.6 ms
1.8.0_212-b04 ext4 82.6% 3 ms 1.1 ms 4.1 ms
1.8.0_212-b04 xfs 23.8% 4 ms 3.7 ms 3.9 ms
1.8.0_212-b04 zfs 23.1% 3 ms 4.8 ms 5.0 ms
11.0.3+7 btrfs 98.1% 3 us 0.7 ms 4.7 ms
11.0.3+7 ext4 98.1% 6 us 0.7 ms 4.7 ms
11.0.3+7 xfs 98.5% 7 us 0.1 ms 8.0 ms
11.0.3+7 zfs 98.4% 7 us 0.7 ms 5.2 ms
Mac OS
1.8.0_212 APFS 0% 1 s
11.0.3+7 APFS 0% 6 us
The observed delta is not distributed according to a normal gaussian
distribution but rather random in the observed range between "min delta"
and "max delta".
Run this test after measuring file timestamp resolution in
FS.FileAttributeCache to auto-configure JGit since it's unclear what
mechanism is causing this effect.
In FileSnapshot#isRacyClean use the maximum of the measured timestamp
resolution and the measured "delta" as explained above to decide if a
given FileSnapshot is to be considered racily clean. Add a 30% safety
margin to ensure we are on the safe side.
Change-Id: I1c8bb59f6486f174b7bbdc63072777ddbe06694d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
These are useful to avoid typos, and also for tab completion.
Change-Id: I0f2d267e46b36bc40297c9657c447f3fd8b9f831
Signed-off-by: David Turner <dturner@twosigma.com>
In a subsequent patch, in some cases, PackWriter#writePack will be
responsible for both the "packfile-uris" and "packfile" sections,
meaning that (in these cases) it must write the "packfile" section
header itself.
In preparation for that patch, move the writing of the "packfile"
section header closer to the invocation of PackWriter#writePack when the
entire fetch response is configured to use the sideband. This means that
"packfile" is written *after* objects are counted (and progress messages
sent to the client in sideband 2) when the "sideband-all" feature is
used (whether "packfile-uris" is used or not), and written *before*
objects are counted otherwise.
Having code to write "packfile" in two places is unfortunate but
necessary. When "sideband-all" is not used, object counting has to
happen after "packfile" is written, because "packfile" activates the
sideband that allows counting progress to be transmitted. When
"packfile-uris" is used, object counting has to happen before "packfile"
is written, because object counting determines whether to send
"packfile-uris" or "packfile". When "sideband-all" is used but
"packfile-uris" is not used, either way works; this commit uses
"packfile-uris" behavior in this case.
Also make the naming of the sideband-activating methods in PacketLineOut
more consistent.
Change-Id: Ifbfd26cc26af10c41b77758168833702d6983df1
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
We should not list the complete cache but only show the cache entry at
hand.
Change-Id: I22be2a4dcbf0145155e23f2389bfcf5662cf23a6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Repeat the test 10000 times to get statistics if measured
fsTimestampResolution is working in practice to detect racy git
situations.
Add a class to compute statistics for this test. Log delta between
lastModified and time when FileSnapshot failed to detect modification.
This happens if the racy git limit determined by measuring filesystem
timestamp resolution and clock resolution is too small. If it would be
correct FileSnapshot would always detect modification or mark it
modified if time since modification is smaller than the racy git limit.
Change-Id: Iabe7af1a7211ca58480f8902d4fa4e366932fc77
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The newly introduced ProtocolV2HookChain is implemented using lists
instead of arrays.
Update PostUploadHookChain to keep the hook chains implementation
consistent.
Change-Id: I5ae0c923f117ac48558a989464f5d5d868d81f76
Signed-off-by: Ivan Frade <ifrade@google.com>
The newly introduced ProtocolV2HookChain is implemented using lists
instead of arrays.
Update PostUploadHookChain to keep hook chain implementations
consistent.
Change-Id: Ic5694feab943e8949896b93103dbf427716c9bd7
Signed-off-by: Ivan Frade <ifrade@google.com>
Set synchronized to make the config access consistent.
> Inconsistent synchronization of
org.eclipse.jgit.transport.JschConfigSessionFactory.config; locked 80%
of time
In order to make JschConfigSessionFactory threadsafe, synchronize this
method as well.
Change-Id: I32d1bfc2e98363d254992144e795ce72fe1e8846
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
Measure granularity of timestamps stored in the filesystem by setting
and then getting lastModified timestamp until the read value changed.
Increase increment exponentially to limit number of iterations starting
with 1 microsecond since Java's FileTime (up to Java 12) truncates
timestamps to 1 microsecond resolution. The chosen algorithm yields 2000
steps between 1 ms and 2.5 s.
Also measure clock resolution and add that for the total timestamp
resolution. This avoids systematic measurement errors introduced by
doing IO to touch a file.
Change-Id: I9b37138619422452373e298d9d8c7cb2c384db3f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
We should not use configuration when creating FileSnapshot when
accessing FileBasedConfig.
Change-Id: Ic521632870f18bb004751642b9d30648dd94049a
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
A caller cannot install a second hook in the UploadPack without
overwriting whatever is already there.
Offer a method to get the current protocol v2 hook, so it can be chained
with new hooks.
Change-Id: Icb06f94ec52b8c8714f509b5b8622d6db42960fb
Signed-off-by: Ivan Frade <ifrade@google.com>
UploadPack only supports one protocol-v2 hook. There are already cases
where more than one is needed.
Offer a Chain class to compose ProtocolV2Hooks, as other hooks do. It
looks like a single hook but it calls all its members.
Change-Id: Idd173ca7df6672079ac0de03c67f77abac376538
Signed-off-by: Ivan Frade <ifrade@google.com>
This enables higher file timestamp resolution on filesystems like ext4,
Mac APFS (1ns) or NTFS (100ns) providing high timestamp resolution on
filesystem level.
Note:
- on some OSes Java 8,9 truncate milliseconds, see
https://bugs.openjdk.java.net/browse/JDK-8177809, fixed in Java 10
- UnixFileAttributes truncates timestamp resolution to microseconds when
converting the internal representation to FileTime exposed in the API,
see https://bugs.openjdk.java.net/browse/JDK-8181493
- WindowsFileAttributes also provides only microsecond resolution
Change-Id: I25ffff31a3c6f725fc345d4ddc2f26da3b88f6f2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
On Android FS#getFsTimestampResolution always throws a
SecurityException, handle this by falling back to the fallback timestamp
resolution.
Bug: 548947
Change-Id: I0ee6cb3c20e189bdc8d488434a930427ad6f2df2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
It seems on cygwin creating a file under a writable directory can fail
with AccessDeniedException. Log a warning in this case and fallback to
worst case timestamp resolution of 2 seconds.
Bug: 548648
Change-Id: Ic50c31ce9dc9ccadd4db5247df929418ac62d45c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Checking lastModified is time critical hence debug trace is the only way
to analyze issues since debugging is impractical.
Also add configuration for buffering of log4j output to reduce runtime
impact when debug trace is on. Limit buffer to 1MiB and comment this
configuration out since we may not always want to use buffering.
Change-Id: Ib1a0537b67c8dc3fac994a77b42badd974ce6c97
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Use options
- StandardOpenOption.CREATE to create touched file if not existing
- StandardOpenOption.SYNC to enforce synch of data and meta data changes
- StandardOpenOption.WRITE
Also set mtime explicitly in FileUtils#touch to the current system time.
This should fix that the previous implementation didn't work on
- locally cached Windows network share (CSC-CACHE filesystem) mapped as
a drive
- nfsv4 mounts on Linux
and that it didn't create unborn file like Linux command "touch".
Apache common's and Guava's touch() use the same approach.
Immediately after creating the probe file used to measure timestamp
resolution touch it. This ensures we always use the local system clock
when measuring filesystem timestamp resolution. This should prevent that
clock skew could influence the measured timestamp resolution in case of
a mounted network filesystem.
Bug: 548598
Change-Id: Iaeaf5967963f582395a195aa637b8188bfadac60
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
To enable persisting filesystem timestamp resolution per FileStore add a
new config section to the user global git configuration:
- Config section is "filesystem"
- Config subsection is concatenation of
- Java vendor (system property "java.vm.vendor")
- runtime version (system property "java.vm.version")
- FileStore's name
- separated by '|'
e.g.
"AdoptOpenJDK|1.8.0_212-b03|/dev/disk1s1"
The prefix is needed since some Java versions do not expose the full
timestamp resolution of the underlying filesystem. This may also
depend on the underlying operating system hence concrete key values
may not be portable.
- Config key for timestamp resolution is "timestampResolution" as a time
value, supported time units are those supported by
DefaultTypedConfigGetter#getTimeUnit
If timestamp resolution is already configured for a given FileStore
the configured value is used instead of measuring the resolution.
When timestamp resolution was measured it is persisted in the user
global git configuration.
Example:
[filesystem "AdoptOpenJDK|1.8.0_212-b03|/dev/disk1s1"]
timestampResolution = 1 seconds
If locking the git config file fails retry saving the resolution up to 5
times in order to workaround races with another thread.
In order to avoid stack overflow use the fallback filesystem timestamp
resolution when loading FileBasedConfig which creates itself a
FileSnapshot to help checking if the config changed.
Note:
- on some OSes Java 8,9 truncate to milliseconds or seconds, see
https://bugs.openjdk.java.net/browse/JDK-8177809, fixed in Java 10
- UnixFileAttributes up to Java 12 truncates timestamp resolution to
microseconds when converting the internal representation to FileTime
exposed in the API, see https://bugs.openjdk.java.net/browse/JDK-8181493
- WindowsFileAttributes also provides only microsecond resolution up to
Java 12
Hence do not attempt to manually configure a higher timestamp resolution
than supported by the Java version being used at runtime.
Bug: 546891
Bug: 548188
Change-Id: Iff91b8f9e6e5e2295e1463f87c8e95edf4abbcf8
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Allow the client to specify "sideband-all" in a fetch v2 request,
indicating that the whole response is to be multiplexed (with a sideband
indicator on every non-flush and non-delim pkt) instead of only the
packfile being multiplexed. This allows, for example, progress messages
to be sent at any point in the response.
This implements the "sideband-all" feature documented in
Documentation/technical/protocol-v2.txt in Git.
Change-Id: I3e7f21c88ff0982b1b7ebb09c9ad6c742c4483c8
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
It is difficult to track what's happening with the pckOut instance
field, so replace it with a local variable in #upload instead.
Change-Id: Ibd9225b28334b7133eccdc6d82b26fc96cbde299
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Use brackets in all "if" statements and remove the "final" from local
variables and method arguments.
https://wiki.eclipse.org/EGit/Contributor_Guide#Coding_standards
Change-Id: I185f3112848fc1218cd7adb9828488f03fa4ddfc
Signed-off-by: Ivan Frade <ifrade@google.com>
In order to avoid blocking on the main thread during measurement
interactive applications like EGit may want to measure the filesystem
timestamp resolution asynchronously.
In order to enable measurement in the background call
FileStoreAttributeCache.setAsyncfileStoreAttrCache(true)
before the first access to cached FileStore attributes.
Bug: 548188
Change-Id: I8c9a2dbfc3f1d33441edea18b90e36b1dc0156c7
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Add a unittest.
In commit I5485db55 ("Fix FileSnapshot's consideration of file size"),
the special casing of UNKNOWN_SIZE was forgotten.
This change, together with I493f3b57b ("Measure file timestamp
resolution used in FileSnapshot") introduced a regression that would
occasionally surface in Gerrit integration tests marked UseLocalDisk,
with the symptom that creating the Admin user in NoteDb failed with a
LOCK_FAILURE.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Change-Id: I7ffd972581f815c144f810481103c7985af5feb0
Fixes PDE API checks complaining: the methods were added
in JGit 5.5.0.
Change-Id: I9ff860c3408c6bb3891fa0da7547394d0fe9d0b6
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
It was reported that measuring file timestamp resolution may hang
indefinitely on nfs. Hence timeout this measurement at the known worst
filesystem timestamp resolution (FAT) of 2 seconds.
Bug: 548188
Change-Id: I17004b0aa49d5b0e76360a008af3adb911b289c0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
All other exceptions are handled in a wrapped sendPack method.
Consolidate the error handling code.
Change-Id: Ieac0ce64960534d009d1e6b025130b021b744794
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
By doing this, exceptions thrown by sendPack are also covered by the
same code.
Change-Id: I3509f2d832af1410f307e931577e4d07e32b014e
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
When another exception is thrown while handling another exception, that
exception can be attached to the original exception since Java 7
(Throwable#getSuppressed). Attach the secondary exception to the
original exception instead of throwing it away.
Change-Id: Ia093b8207714f2638e0343bc45a83d4342947505
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
RevWalk does not currently provide a --first-parent equivalent and the
feature has been requested.
Add a field to the RevWalk class to specify whether walks should
traverse first parents only. Modify Generator implementations to support
the feature.
Change-Id: I4a9a0d5767f82141dcf6d08659d7cb77c585fae4
Signed-off-by: Dave Borowitz <dborowitz@google.com>
Signed-off-by: Alex Spradlin <alexaspradlin@google.com>
If a client clones with "--filter=blob:none", the checkout that "git
clone" automatically does causes the client to fetch all blobs at HEAD.
When fetching from a non-bitmapped repository, this will fail if an
object walk is ever needed, because JGit currently rejects such requests
- see the commit message of d3021788d2 ("Use bitmaps for non-commit
reachability checks", 2017-11-10) for more information.
Rejecting such requests in the absence of bitmaps is probably
overzealous: it is true that the server would prefer to have bitmaps in
this case, but there might be a small proportion of repos (for example,
very small repos or newly created ones) that do not have bitmaps, yet
the server would still like to have partial clones for them.
So, allow such requests, performing the object walk reachability check
if necessary. Limit this to servers with "uploadpack.allowFilter"
configured, so that servers wanting to support partial clone have this
functionality, and servers that do not support partial clone do not have
to pay the object walk reachability check cost.
Change-Id: I51964bafec68696a799625d627615b4f45ddbbbf
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Error Prone reports:
[ClassNewInstance] Class.newInstance() bypasses exception checking;
prefer getDeclaredConstructor().newInstance()
See https://errorprone.info/bugpattern/ClassNewInstance
This was the only occurrence of the warning in the code base; now it's
fixed, increase the severity to ERROR to prevent future occurrences.
Change-Id: Ic04d1c5d2bd458bbb4bb399d6ce9d147bd48d0b1
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
The placeholders in manifest and plugin.properties did not match. To
avoid similar issues, all placeholders have been changed to
Bundle-Vendor and Bundle-Name now.
Bug:548503
Change-Id: Ibd4b9bc237b323e614506b97e5fbc99416365040
Signed-off-by: Michael Keppler <Michael.Keppler@gmx.de>
The deleted code is not required as removed files are deleted correctly in
doCheckout() anyway.
The deleted code failed in case a non-empty directory had to be deleted.
file.delete() returned false, triggering an exception.
Bug: 479266
Change-Id: I011bb3882ff0c35b238aa3eccad7889041210277
Signed-off-by: René Scheibe <rene.scheibe@gmail.com>
Creating a folder failed in case a file with the same name already
existed.
Bug: 479266
Change-Id: Ia987660ec0968ad4081dbd5a60e80660539497e3
Signed-off-by: René Scheibe <rene.scheibe@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Archives created by the ArchiveCommand didn't produce deterministic
archive hashes. For RevCommits RevWalk.parseTree returns the root tree
instead of the RevCommit hence retrieving the commit's timestamp didn't
work. Instead use RevWalk.parseAny and extract the tree manually.
Archive entries store timestamps with 1 second resolution hence we need
to wait longer when creating the same archive twice and compare archive
hashes. Otherwise hash comparison in tests wouldn't fail without this
patch.
Bug: 548312
Change-Id: I437d515de51cf68265584d28a8446cebe6341b79
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
update Maven plugins
- jacoco-maven-plugin to 0.8.4
- japicmp-maven-plugin to 0.14.1
- maven-compiler-plugin to 3.8.1
- maven-deploy-plugin to 3.0.0-M1
- maven-enforcer-plugin to 3.0.0-M2
- maven-install-plugin to 3.0.0-M1
- maven-jar-plugin to 3.1.2
- maven-javadoc-plugin to 3.1.0
- maven-jxr-plugin to 3.0.0
- maven-pmd-plugin to 3.12.0
- maven-resources-plugin to 3.1.0
- maven-shade-plugin to 3.2.1
- maven-source-plugin to 3.1.0
- maven-surefire-plugin to 3.0.0-M3
- spotbugs-maven-plugin to 3.1.12
- tycho to 1.3.0
- tycho-pack200a-plugin to 1.3.0
- tycho-pack200b-plugin to 1.3.0
Cleanup Maven warnings
- pin version of all used Maven plugins
- remove deprecated way to declare minimum Maven version
Change-Id: If23e2e2bb03e5e1e7b1eb9d4924a8faa0aa3704e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Replace javax.xml.bind.DatatypeConverter, that is not available any
more in Java 11 and later with Hex utility from non optional Bouncy
Castle library.
Bug: 540790
Change-Id: I9903c00ecc1a434e9795b8ba9267f02628fdc0e9
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
As reported by Error Prone:
An inner class should be static unless it references members of its
enclosing class. An inner class that is made non-static unnecessarily
uses more memory and does not make the intent of the class clear.
See https://errorprone.info/bugpattern/ClassCanBeStatic
Change-Id: Ib99d120532630dba63cf400cc1c61c318286fc41
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
(cherry picked from commit ee40efcea4)
Error Prone reports the warning on several classes:
[NonOverridingEquals] equals method doesn't override Object.equals;
if this is a type-specific helper for a method that does override
Object.equals, either inline it into the callers or rename it to
avoid ambiguity.
See https://errorprone.info/bugpattern/NonOverridingEquals
Most of these are in the public API, so we can't rename or inline them
without breaking the API. FileSnapshot is not part of the public API,
but clients may be using it anyway, so we also shouldn't change that.
Suppress all the warnings instead. Having the check at severity ERROR
will at least make sure we don't introduce any new occurrences.
Change-Id: I92345c11256f06b4fa03ccc13337f72af5a43591
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
ParseableSimpleDateFormat is an enum, and enums must be immutable,
hence the member should be final. At the same time, make it private
since it does not need to be publicly visible.
Change-Id: I7e181f591038d556f1123b6e37adf8441059e99a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Reference comparison is intentional. The END and DELIM string
constants are used as sentinels and will always be the same
instances.
Suppress both ReferenceEquality and StringEquality warnings.
Change-Id: I4ce0495702c56b3911f42f26c2f81d28073cbe19
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Reference comparison with EMPTY and MISSING_FILE is intended; these
are static instances used as markers, and will always be the same
instances.
Change-Id: Ic27f5b797bdb9370cf8f6b3b7bb3f1523d4a454c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
When cloning repository with --single-branch option, tag chains are not
packed and pack file is broken in some cases.
Typical test-case:
git tag -a test_tag <commit-id>
git tag -a test_prev_tag test_tag
git tag -d test_tag
git clone --single-branch <repository>
fatal: did not receive expected object <test_tag_id>
The reason for that is missing object for original test_tag reference,
which was deleted.
Problem description:
When pack-objects is given --include-tag, it peels each tag reference
down to a commit. If the commit is prepared to be packed, we we have to
include such tag too. The problem is when the tag points to through some
chain of other tag to commit. Then, the inner tags are not added leading
to broken pack.
Fix:
When going to commit, we have to check and add any of the tags on the
way (if they were not selected, which may happen with --single-branch
option).
Change-Id: I1682d4a2c52d674f90a1b021e0f6c3524c5ce5bc
Signed-off-by: Pavel Flaška <Pavel.Flaska@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Issues reported by downstream analyzers.
The "hash" method can be static.
It is a good practice to group overloaded methods. Move the write(URL)
method with the other writes.
Change-Id: Ia42c0d7081333edcb77e58d5e627929d29672490
Signed-off-by: Ivan Frade <ifrade@google.com>
Downstream analyzers reported empty fields in the javadoc. I corrected
few more details:
* Fill empty javadoc fields.
* Use <p> to separate description paragraphs.
* End description paragraphs with a period.
* Remove period at the end of field descriptions.
Change-Id: I749e4b821fc855999caddc442ac788fa514386ea
Signed-off-by: Ivan Frade <ifrade@google.com>
Reported by downstream analyzers. Suppress the warning on reference
equality for isMissing and fill an empty javadoc field.
Change-Id: I3494423daf2a53ca10e0a9c66553f00204c35396
Signed-off-by: Ivan Frade <ifrade@google.com>
Using the | and & operators in boolean conditions results in a warning
from Error Prone:
[ShortCircuitBoolean]
Prefer the short-circuiting boolean operators && and || to & and |.
see https://errorprone.info/bugpattern/ShortCircuitBoolean
Change-Id: I182f986263b8b9ac189907f4bd1662b4092a52d8
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Using the | and & operators in boolean conditions results in a warning
from Error Prone:
[ShortCircuitBoolean]
Prefer the short-circuiting boolean operators && and || to & and |.
see https://errorprone.info/bugpattern/ShortCircuitBoolean
Change-Id: I6cccca3fdd28bf93b302a9b8a66e68ac912cb60d
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Using the | and & operators in boolean conditions results in a warning
from Error Prone:
[ShortCircuitBoolean]
Prefer the short-circuiting boolean operators && and || to & and |.
see https://errorprone.info/bugpattern/ShortCircuitBoolean
Change-Id: I4275c60306e43c74030c4465ba02cb853ad444e1
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Fix all remaining instances of the OperatorPrededence warning, by adding
parentheses to make the precedence explicit.
Change-Id: Ib296dfed09f9be042d0ff0f7fad8214e4dd766b4
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* master:
Handle missing "ours" stage in WorkingTreeIterator.hasCrLfInIndex()
Config: Add helper method to check for empty value
ErrorProne: Increase severity of FutureReturnValueIgnored to ERROR
FS_Win32: Add missing parentheses on if-blocks
Upgrade spotbugs to 3.1.12
Abbreviated{Long}ObjectId: Make operator precedence explicit
GC: Update TODO comments
FS_POSIX: Fix reference comparison of Boolean.FALSE
Increase bazel timeout for long running tests
Use bazelisk to switch between used bazel version
Bump minimum Bazel version to 0.26.1
Bazel: Bump skylib library version to 0.8.0
Retry loading config when locked by another process
Make pull --rebase on an unborn branch do a checkout
Warn if configured cookie file is missing
Handle escaped CR-LF in git config files
DescribeCommand: use glob match instead of path match
Fix off-by-one error in RebaseTodoFile when reading a todo file
Consistently use "!isEmpty()" to detect non-empty list
TransportHttp: Check for non-empty list with "!isEmpty()" rather than
"size() > 0"
TransportHttp: Fix comparison of size with ">= 0"
NetscapeCookieFileTest: Split HttpCookiesMatcher to own class
Bazel: Add missing dependency on mockito for TransportHttpTest
Determine hard-linking and nlink support per FileStore
Support reading and writing cookies.
Repository: Add getIdentifier() method to avoid instanceof operator
Update to Orbit R20190602212107
PacketLineIn: Deprecate the END constant
PacketLineIn: Add an iterator over strings in the input stream
Replace most usages of PacketLineIn.END with PacketLineIn.end()
PacketLineIn: Deprecate DELIM constant
Replace trivial reference comparison of PacketLineIn.{DELIM,END}
PacketLineIn: Rename isDelim to isDelimiter
ProtocolV2ParserTest: Fix typo in comment
Upgrade Bouncy Castle to 1.61
Update to Orbit R20190531194818 and rollback update to Ant 1.10.6
cli: Add the --always option to describe
DescribeCommand: Support the "always" option
cli: Add the --tags option to describe
DescribeCommand: Consistenly omit the default value
Remove excess blank line in FileUtilsTest
PacketLineIn: Add helper methods to check for END and DELIM
UploadPackTest: Rename variable to avoid hiding class member
UploadPackTest: Add missing <> operator on instantiation of ArrayList
BitmapCalculator: javadoc fixes
RevWalkUtils: add progress callback to findBranchesReachableFrom
Upgrade maven-source-plugin to 3.1.0
Upgrade maven-jar-plugin to 3.1.2
Upgrade jacoco-maven-plugin to 0.8.4
BitmapCalculator and its test: add missing license header
RevWalk: new method createReachabilityChecker()
Change-Id: I4d76c7c0dbe6411c842f3468b709f7df51789c08
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
In a delete-modify conflict with the deletion as "ours" there may be
no stage 2 in the index. Add appropriate null checks. Add a new test
for this case, and verify that the file gets added with a single LF
after conflict resolution with core.autocrlf=true. This matches the
behavior of canonical git for this case.
Bug: 547724
Change-Id: I1bafdb83d9b78bf85294c78325e818e72fae53bc
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Rename MAGIC_EMPTY_VALUE to MISSING_ENTRY, make it private, and add
a helper method to check if a given string is that value.
This avoids that callers trigger the "reference equality" warning
from Error Prone.
Change-Id: Idc76f78c0cf1828aa48d02ee33911a4b5df50355
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Matthias Sohn