Teach UploadPack to take a provider of URIs corresponding to cached
packs. When fetching, if the client supports the packfile-uri feature,
and if such a cached pack were to be streamed, instead send the
corresponding URI.
This packfile-uri feature is implemented in the jt/fetch-cdn-offload
branch of Git. There is interest in this feature [1], but it is not yet
merged.
[1] https://public-inbox.org/git/cover.1552073690.git.jonathantanmy@google.com/
Change-Id: I9a32dae131c9c56ad2ff4a8a9638ae3b5e44dc15
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
* stable-5.4:
Fix NPE in RebaseTodoFile#parseComments
Fix NPE in ObjectIdOwnerMap#get
Fix NPE in CommitOnlyTest#getHead
FileUtils#lastModifiedInstant should not log error if path doesn't exist
Cache user global and system-wide git configurations
Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock
Add missing dependencies for running FS_POSIXTest in Eclipse
Fix javadoc for SystemReader#getInstance
Upgrade tycho-extras to 1.4.0
Improve retry handling when saving FileStoreAttributes fails
Ensure FSTest uses MockSystemReader
Make supportsAtomicCreateNewFile return true as default
Update orbit to R20190602212107-2019-06 to enable backports from master
Handle InvalidPathException in FS_POSIX#createNewFileAtomic
Ensure root cause of lock creation failures is logged
Implement toString in MockSystemReader and MockConfig
LocalDiskRefTreeDatabaseTest shall use MockSystemReader
Ensure LocalDiskRepositoryTestCase#setup fully uses MockSystemReader
Ensure we use MockSystemReader in tests
Override FileBasedConfig's save method in MockConfig
Remove FileBasedConfig.load(boolean) introduced in d45219ba
Disable debug log for FS in org.eclipse.jgit.test
Bazel: enable logging for tests in org.eclipse.jgit.test
LockFile: log exception if creation of lock file failed
Stop using deprecated Constants.CHARACTER_ENCODING
Change-Id: I709de5edb626536529a99220aae7751b127c9bff
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.3:
Fix NPE in RebaseTodoFile#parseComments
Fix NPE in ObjectIdOwnerMap#get
Fix NPE in CommitOnlyTest#getHead
FileUtils#lastModifiedInstant should not log error if path doesn't exist
Cache user global and system-wide git configurations
Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock
Add missing dependencies for running FS_POSIXTest in Eclipse
Fix javadoc for SystemReader#getInstance
Improve retry handling when saving FileStoreAttributes fails
Ensure FSTest uses MockSystemReader
Make supportsAtomicCreateNewFile return true as default
Update orbit to R20190602212107-2019-06 to enable backports from master
Handle InvalidPathException in FS_POSIX#createNewFileAtomic
Ensure root cause of lock creation failures is logged
Implement toString in MockSystemReader and MockConfig
LocalDiskRefTreeDatabaseTest shall use MockSystemReader
Ensure LocalDiskRepositoryTestCase#setup fully uses MockSystemReader
Ensure we use MockSystemReader in tests
Override FileBasedConfig's save method in MockConfig
Remove FileBasedConfig.load(boolean) introduced in d45219ba
Disable debug log for FS in org.eclipse.jgit.test
Bazel: enable logging for tests in org.eclipse.jgit.test
LockFile: log exception if creation of lock file failed
Stop using deprecated Constants.CHARACTER_ENCODING
Change-Id: I43c2ab8b44c3e87d48e4072907ad169c81e3ffe0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.2:
Fix NPE in RebaseTodoFile#parseComments
Fix NPE in ObjectIdOwnerMap#get
Fix NPE in CommitOnlyTest#getHead
FileUtils#lastModifiedInstant should not log error if path doesn't exist
Cache user global and system-wide git configurations
Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock
Add missing dependencies for running FS_POSIXTest in Eclipse
Fix javadoc for SystemReader#getInstance
Improve retry handling when saving FileStoreAttributes fails
Ensure FSTest uses MockSystemReader
Make supportsAtomicCreateNewFile return true as default
Update orbit to R20190602212107-2019-06 to enable backports from master
Handle InvalidPathException in FS_POSIX#createNewFileAtomic
Ensure root cause of lock creation failures is logged
Implement toString in MockSystemReader and MockConfig
LocalDiskRefTreeDatabaseTest shall use MockSystemReader
Ensure LocalDiskRepositoryTestCase#setup fully uses MockSystemReader
Ensure we use MockSystemReader in tests
Override FileBasedConfig's save method in MockConfig
Remove FileBasedConfig.load(boolean) introduced in d45219ba
Disable debug log for FS in org.eclipse.jgit.test
Bazel: enable logging for tests in org.eclipse.jgit.test
LockFile: log exception if creation of lock file failed
Stop using deprecated Constants.CHARACTER_ENCODING
Change-Id: If0c5010a2cf151ebebb2f2088fac3ee02c5007b9
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.1:
Fix NPE in RebaseTodoFile#parseComments
Fix NPE in ObjectIdOwnerMap#get
Fix NPE in CommitOnlyTest#getHead
FileUtils#lastModifiedInstant should not log error if path doesn't exist
Cache user global and system-wide git configurations
Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock
Add missing dependencies for running FS_POSIXTest in Eclipse
Fix javadoc for SystemReader#getInstance
Improve retry handling when saving FileStoreAttributes fails
Ensure FSTest uses MockSystemReader
Make supportsAtomicCreateNewFile return true as default
Update orbit to R20190602212107-2019-06 to enable backports from master
Handle InvalidPathException in FS_POSIX#createNewFileAtomic
Ensure root cause of lock creation failures is logged
Implement toString in MockSystemReader and MockConfig
LocalDiskRefTreeDatabaseTest shall use MockSystemReader
Ensure LocalDiskRepositoryTestCase#setup fully uses MockSystemReader
Ensure we use MockSystemReader in tests
Override FileBasedConfig's save method in MockConfig
Remove FileBasedConfig.load(boolean) introduced in d45219ba
Disable debug log for FS in org.eclipse.jgit.test
Bazel: enable logging for tests in org.eclipse.jgit.test
LockFile: log exception if creation of lock file failed
Stop using deprecated Constants.CHARACTER_ENCODING
Change-Id: I48c585f3c9287be7d6ddb6b01a1955444e13fa31
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Previously, the API did not enforce ordering of writes. Misuse of
this API would lead to data effectively being lost.
Guard against that with IllegalArgumentException, and add a test.
Change-Id: I04f55c481d60532fc64d35fa32c47037a03988ae
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Small reftables omit the log index. Currently,
ReftableWriter#shouldHaveIndex does this if there is a single-block
log, but other writers could decide on different criteria.
In the case that the log index is missing, we have to linearly search
for the right block. It is never appropriate to use binary search on
blocks for log data, as the blocks are compressed and therefore
irregularly sized.
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Change-Id: Id59874edf6bf45c7dec502d9465888e077ffe198
So far the git configuration and the system wide git configuration were
always reloaded when jgit accessed these global configuration files to
access global configuration options which are not in the context of a
single git repository. Cache these configurations in SystemReader and
only reload them if their file metadata observed using FileSnapshot
indicates a modification.
Change-Id: I092fe11a5d95f1c5799273cacfc7a415d0b7786c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
The existing javadoc was copied from another method and not adapted.
Change-Id: I39a7e5d719b2c379de9bd1a4710a55a73700c6f0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The "Location" header in a redirect response may contain a relative
URI. Resolve it against the URI the request was made.
Bug: 550033
Change-Id: I29de07dfbbbc794090821b7c190cb2cf662c5a60
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
The algorithm for finding keys was already improved in commit db0eb9f8,
but that wasn't quite correct yet.
If there is no pubring.kbx but a private-keys-v1.d directory and a
pubring.gpg, GPG also uses pubring.gpg in combination with the
private-keys-v1.d directory. GPG has three ways to locate public and
private key pairs:
* pubring.kbx and private-keys-v1.d (GPG >= 2.1)
* pubring.gpg and private-keys-v1.d (GPG >= 2.1)
* pubring.gpg and secring.gpg (GPG < 2.1)
See [1] and [2]. pubring.kbx may not exist if the user migrated from
an older GPG installation and didn't run the agent. Since we don't
know which GPG version the user has we must try secring.gpg also if
we found the public key in pubring.gpg, but didn't find the secret
key in the private key directory. Note that GPG < 2.1 also may have
a private key directory, used by the agent. But it may also _not_ have
that directory.
[1] https://lists.gnupg.org/pipermail/gnupg-users/2015-December/054881.html
[2] https://www.gnupg.org/faq/whats-new-in-2.1.html#nosecring
Bug: 549439
Change-Id: I6088014b16c585b6a3408bb31dba3c116e6b583d
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
- 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>
Jonathan Tan