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The CommandFailedException which was thrown in finally block is silently
discarded [1]. Refactor this method to throw the exception after the
finally block.
This fixes the warning "Null comparison always yields false: The
variable failure can only be null at this location".
[1] https://wiki.sei.cmu.edu/confluence/display/java/ERR04-J.+Do+not+complete+abruptly+from+a+finally+block
https://docs.oracle.com/javase/specs/jls/se8/html/jls-14.html#jls-14.20.2
Change-Id: Idbfc303d9c9046ab9a43e0d4c6d65d325bdaf0ed
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Change-Id: I6f6b8641f6c3e8ab9f625594085014272305656a
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Add the following statistics
- cache hit count and hit ratio
- cache miss count and miss ratio
- count of successful and failed loads
- rate of failed loads
- load, eviction and request count
- average and total load time
Use LongAdder instead of AtomicLong to implement counters in order to
improve scalability.
Optionally expose these metrics via JMX, they are registered with the
platform MBean server if the config option jmx.WindowCacheStats = true
in the user or system level git config.
Bug: 553573
Change-Id: Ia2d5246ef69b9c2bd594a23934424bc5800774aa
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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SystemReader.updateAll() must _not_ test whether the file exists. In
tests at least there are FileBasedConfigs with a null file. Test
configs should (and do) override isOutdated() to deal with this case.
Change-Id: I56303fe0d56afeb9f2203ee807a92c5dcf3809e9
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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Change-Id: I6136ef5318f81a6feb1267338ca76e60122fd15b
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
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This ensures the measured filesystem timestamp resolution will be only
used on the machine where it was measured and avoid errors in case the
~/.jgitconfig file is copied to another machine.
Bug: 551850
Change-Id: Iff2a11be62ca94c3bbe4a955182988dc50852f9f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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This avoids polluting hand-crafted user level config with
auto-configured options which might disturb in environments where
the user level config is replicated between different machines.
Add a jgit config as parent of the system level config. Persist
measured timestamp resolutions always in this jgit config and read it
via the user global config. This has the effect that auto-configured
timestamp resolution will be used by default and can be overridden in
either the system level or user level config.
Store the jgit config under the XDG_CONFIG_HOME directory following the
XDG base directory specification [1] in order to ensure that we have
write permissions to persist the file. This has the effect that each OS
user will use its jgit config since they typically use different
XDG_CONFIG_HOME directories.
If the environment variable XDG_CONFIG_HOME is defined the jgit config
file is located at $XDG_CONFIG_HOME/jgit/config otherwise the default is
~/.config/jgit/config.
If you want to avoid redundant measurement for different OS users
manually copy the values measured and auto-configured for one OS user to
the system level git config.
[1] https://wiki.archlinux.org/index.php/XDG_Base_Directory
Bug: 551850
Change-Id: I0022bd40ae62f82e5b964c2ea25822eb55d94687
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Change-Id: Ia77f442e47c5670c2d6d279ba862044016aabd86
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.4:
Prepare 5.3.7-SNAPSHOT builds
JGit v5.3.6.201910020505-r
Prepare 5.1.13-SNAPSHOT builds
JGit v5.1.12.201910011832-r
Do not rely on ArrayIndexOutOfBoundsException to detect end of input
Change-Id: Ia1070fd170651ce827bc6b876c6764a44ffe60eb
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.3:
Prepare 5.3.7-SNAPSHOT builds
JGit v5.3.6.201910020505-r
Prepare 5.1.13-SNAPSHOT builds
JGit v5.1.12.201910011832-r
Do not rely on ArrayIndexOutOfBoundsException to detect end of input
Change-Id: Ia621d06a9489ee276c793de9dd4a77f4ff19e2ac
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.2:
Prepare 5.1.13-SNAPSHOT builds
JGit v5.1.12.201910011832-r
Do not rely on ArrayIndexOutOfBoundsException to detect end of input
Change-Id: I3f11a83e177daefa0a2e91173f70f9547067f713
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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# By Matthias Sohn (2) and Saša Živkov (1)
* stable-5.1:
Prepare 5.1.13-SNAPSHOT builds
JGit v5.1.12.201910011832-r
Do not rely on ArrayIndexOutOfBoundsException to detect end of input
Change-Id: Iaae4b171eaa0081f9142489de8df94ab455d65f7
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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In the Config#StringReader we relied on ArrayIndexOutOfBoundsException
to detect the end of the input. Creation of exception with (deep) stack
trace can significantly degrade performance in case when we read
thousands of config files, like in the case when Gerrit reads all
external ids from the NoteDb.
Use the buf.length to detect the end of the input.
Change-Id: I12266f25751373a870ce3fa623cf2a95d882d521
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* stable-5.4:
WorkingTreeIterator: handle different timestamp resolutions
Change-Id: I83384336e0d766237d0579152673c9eefc9edd65
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.3:
WorkingTreeIterator: handle different timestamp resolutions
Change-Id: I87afe29578b0270c79bc54c4e2cfda579c329237
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.2:
WorkingTreeIterator: handle different timestamp resolutions
Change-Id: Ia2a38949089a66abb5f4f1cd41717d2ae8d0eb5b
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.1:
WorkingTreeIterator: handle different timestamp resolutions
Change-Id: Ic33ebec963af03a182dfe8f46486f5e8d00c0694
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Older JGit stored only milliseconds timestamps in the index. Newer
JGit may get finer timestamps from the file system. This leads to
slow index diffs when a new JGit runs against an index produced
by older JGit because many timestamps will differ and JGit will
then do many content checks. See [1].
Handle this migration case by only comparing milliseconds if the
index entry has only millisecond precision.
The inverse may also occur; also compare only milliseconds if the
file timestamp has only millisecond precision.
Do the same also for microsecond resolution. On Windows, NTFS may
provide 100ns resolution and may be used by external programs writing
the index, but Java's WindowsFileAttributes may provide only
microseconds.
File timestamp precision in Java depends not only on the Java APIs
used by different JGit versions but may also change when running the
same Java code on different VMs. And of course the resolution may
vary among operating and file systems. Moreover, timestamp precision
in the index depends on the program that wrote the index. Canonical
git may use a different resolution, maybe even different between git
versions.
[1] https://www.eclipse.org/forums/index.php/t/1100344/
Change-Id: Idfd08606c883cb98787b2138f9baf0cc89a57b56
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.4:
Fix WorkingTreeIterator.compareMetadata() for CheckStat.MINIMAL
Change-Id: Ibdda7687da015b17cdca67427202766fe102fee1
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.3:
Fix WorkingTreeIterator.compareMetadata() for CheckStat.MINIMAL
Change-Id: Ie8447fc28b03bfc918cee0cc2162a2aa3585f3ea
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.2:
Fix WorkingTreeIterator.compareMetadata() for CheckStat.MINIMAL
Change-Id: I57093dfef181645088767471159c204c50961c3a
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.1:
Fix WorkingTreeIterator.compareMetadata() for CheckStat.MINIMAL
Change-Id: Ic4ee37fb36f61dc7707391f768bf78a33094bfd3
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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If CheckStat is MINIMAL or timestamps have no nanosecond part
WorkingTreeIterator.compareMetaData only checks the second part of
timestamps and ignores nanoseconds which may have ended up in the index
by using native git.
If
fileLastModified.getEpochSecond() == cacheLastModified.getEpochSecond()
we currently proceed comparing fileLastModified and cacheLastModified
with full precision which is wrong since we determined that we detected
reduced timestamp resolution.
Fix this and also handle smudged index entries for CheckStat.MINIMAL.
Change-Id: I6149885903ac63d79b42d234cc02aa4e19578f3c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.4:
Format BUILD files with buildifier
Format BUILD files with buildifier
[error prone] Suppress NonAtomicVolatileUpdate in SimpleLruCache
Bazel: Format BUILD files with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Fix warning about deprecated lib.bzl
Format lib/BUILD with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Bump minimum supported version to 0.29.0
Bazel: Bump skylib library version to 0.8.0
Use bazelisk to switch between used bazel version
Bazel: Require minimum bazel version 0.17.1
Fix wrong placeholder index in error message packInaccessible
JGitText: Remove unused externalized strings
RepoText: Remove unused externalized string
CLI: Remove unused externalized strings
Change-Id: Idf3abd80ad3b00188f655e638d9908228770911f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.3:
Format BUILD files with buildifier
[error prone] Suppress NonAtomicVolatileUpdate in SimpleLruCache
Bazel: Format BUILD files with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Fix warning about deprecated lib.bzl
Format lib/BUILD with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Bump minimum supported version to 0.29.0
Bazel: Bump skylib library version to 0.8.0
Use bazelisk to switch between used bazel version
Bazel: Require minimum bazel version 0.17.1
Fix wrong placeholder index in error message packInaccessible
JGitText: Remove unused externalized strings
RepoText: Remove unused externalized string
CLI: Remove unused externalized strings
Change-Id: Iaea77a89fcd821df5dbb24f5e3e39e6d1dfc0bd4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.2:
[error prone] Suppress NonAtomicVolatileUpdate in SimpleLruCache
Bazel: Format BUILD files with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Fix warning about deprecated lib.bzl
Format lib/BUILD with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Bump minimum supported version to 0.29.0
Bazel: Bump skylib library version to 0.8.0
Use bazelisk to switch between used bazel version
Bazel: Require minimum bazel version 0.17.1
Fix wrong placeholder index in error message packInaccessible
JGitText: Remove unused externalized strings
RepoText: Remove unused externalized string
CLI: Remove unused externalized strings
Change-Id: I0d8b7f79177a20dc00c89e2cf0005eb3d3039532
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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We don't need to update time atomically since it's only used to order
cache entries in LRU order.
Change-Id: I756fa6d90b180c519bf52925f134763744f2c1f1
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.1:
Bazel: Fix warning about deprecated lib.bzl
Format lib/BUILD with buildifier
Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
Bazel: Bump minimum supported version to 0.29.0
Bazel: Bump skylib library version to 0.8.0
Use bazelisk to switch between used bazel version
Bazel: Require minimum bazel version 0.17.1
Fix wrong placeholder index in error message packInaccessible
JGitText: Remove unused externalized strings
RepoText: Remove unused externalized string
CLI: Remove unused externalized strings
Change-Id: Iea37a8e39e9d4872dc607c9222dcf191ce4e4757
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Change-Id: I995d7a1b6ab2866221eee9f5cb828b97192daf4a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
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Change-Id: Ida47637f54afdb76513be9b04aae32107567d4e3
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
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* stable-5.4:
Prepare 5.4.4-SNAPSHOT builds
JGit v5.4.3.201909031940-r
Prepare 5.3.6-SNAPSHOT builds
JGit v5.3.5.201909031855-r
Prepare 5.1.12-SNAPSHOT builds
JGit v5.1.11.201909031202-r
Prepare 4.11.10-SNAPSHOT builds
JGit v4.11.9.201909030838-r
Bazel: Update bazlets to the latest master revision
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: Icd6630db6458971f840c3ab4553e00f6c775ede0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.3:
Prepare 5.3.6-SNAPSHOT builds
JGit v5.3.5.201909031855-r
Prepare 5.1.12-SNAPSHOT builds
JGit v5.1.11.201909031202-r
Prepare 4.11.10-SNAPSHOT builds
JGit v4.11.9.201909030838-r
Bazel: Update bazlets to the latest master revision
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: Icfd5a612055feeff04733c0d2c44837ab554a2c4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.2:
Prepare 5.1.12-SNAPSHOT builds
JGit v5.1.11.201909031202-r
Prepare 4.11.10-SNAPSHOT builds
JGit v4.11.9.201909030838-r
Bazel: Update bazlets to the latest master revision
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: I7e88c7c7d202f1e3fb8e143277650aa5fefff439
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.1:
Prepare 5.1.12-SNAPSHOT builds
JGit v5.1.11.201909031202-r
Prepare 4.11.10-SNAPSHOT builds
JGit v4.11.9.201909030838-r
Bazel: Update bazlets to the latest master revision
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: Iac5dc9683cea97db04d20f27c10f2e103d3ae7b5
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-5.0:
Prepare 4.11.10-SNAPSHOT builds
JGit v4.11.9.201909030838-r
Bazel: Update bazlets to the latest master revision
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: I172136a031ff0730e575327cafb3527c9650a71d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-4.11:
Prepare 4.11.10-SNAPSHOT builds
JGit v4.11.9.201909030838-r
Bazel: Update bazlets to the latest master revision
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: Ifb6a4dbea2f48fd2ffa66eb737d61920aefedfbd
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-4.10:
Bazel: Update bazlets to the latest master revision
Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: If672b4f0c350f4e8ff7e1e706485cffd8137236d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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* stable-4.9:
BatchRefUpdate: repro racy atomic update, and fix it
Delete unused FileTreeIteratorWithTimeControl
Fix RacyGitTests#testRacyGitDetection
Change RacyGitTests to create a racy git situation in a stable way
Silence API warnings
Change-Id: Id5bf44645655fca40ad22bb1f1ad20a7c2e8f6db
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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PackedBatchRefUpdate was creating a new packed-refs list that was
potentially unsorted. This would be papered over when the list was
read back from disk in parsePackedRef, which detects unsorted ref
lists on reading, and sorts them. However, the BatchRefUpdate also
installed the new (unsorted) list in-memory in
RefDirectory#packedRefs.
With the timestamp granularity code committed to stable-5.1, we can
more often accurately decide that the packed-refs file is clean, and
will return the erroneous unsorted data more often. Unluckily timed
delays also cause the file to be clean, hence this problem was
exacerbated under load.
The symptom is that refs added by a BatchRefUpdate would stop being
visible directly after they were added. In particular, the Gerrit
integration tests uses BatchRefUpdate in its setup for creating the
Admin group, and then tries to read it out directly afterward.
The tests recreates one failure case. A better approach would be to
revise RefList.Builder, so it detects out-of-order lists and
automatically sorts them.
Fixes https://bugs.eclipse.org/bugs/show_bug.cgi?id=548716 and
https://bugs.chromium.org/p/gerrit/issues/detail?id=11373.
Bug: 548716
Change-Id: I613c8059964513ce2370543620725b540b3cb6d1
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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Add the constant, and implement hashing of known host names in
OpenSshServerKeyDatabase. Add a test verifying that the hashing
works.
Bug: 548492
Change-Id: Iabe82b666da627bd7f4d82519a366d166aa9ddd4
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
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* stable-5.4:
Return a new instance from openSystemConfig and openUserConfig
Change-Id: If576513ebbd80c7f01b83be5ab2edd436f5739e3
Signed-off-by: Jonathan Nieder <jrn@google.com>
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* stable-5.3:
Return a new instance from openSystemConfig and openUserConfig
Change-Id: I5f2f957ff27b7941ab29b2dc1c885fbf0093705a
Signed-off-by: Jonathan Nieder <jrn@google.com>
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* stable-5.2:
Return a new instance from openSystemConfig and openUserConfig
Change-Id: I6491549ab13aad2a4c3f8444a090a94a378eccdb
Signed-off-by: Jonathan Nieder <jrn@google.com>
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* stable-5.1:
Return a new instance from openSystemConfig and openUserConfig
Change-Id: I93afa16b14e3e2d127705e3378fb703d6c329694
Signed-off-by: Jonathan Nieder <jrn@google.com>
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Move the handling of cached user and system config to getSystemConfig
and getUserConfig methods and revert the implementation of
openSystemConfig and openUserConfig to the old stateless
implementation.
This ensures the open methods respect the passed-in parent config, which
may be different on each invocation. Additionally, returning a new
instance matches the behavior of the previous implementation of the
default system reader, which downstream callers may be depending on.
Move the implementation of the new caching methods getSystemConfig and
getUserConfig up to SystemReader. This avoids that we break the ABI for
subclasses of SystemReader.
Also see [1] which fixed a similar problem with Gerrit's custom
SystemReader.
[1] https://gerrit-review.googlesource.com/c/gerrit/+/225458
Change-Id: If54a2491932d8fc914d4649cb73c9e837c5b8ad0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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These warnings were missed to address in a0048208 which introduced them.
Change-Id: Ia2d15fdce72c10378d020682b80fe7fc548c0d4c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
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When firstParent is set, RevWalk traverses only the first parent of a
commit, even though that commit is UNINTERESTING. Since we want the
maximal UNINTERESTING set, we shouldn't prune any parents here. This
issue is apparent only when some of the commits being traversed are
unparsed, since walker.carryFlagsImpl() propagates the UNINTERESTING
flag to all parsed ancestors, masking the issue.
Therefore teach RevWalk to traverse all parents when a commit is
UNINTERESTING and not only the first parent. Since this issue is
masked by commit parsing, also test situations when the commits
involved are unparsed.
Signed-off-by: Alex Spradlin <alexaspradlin@google.com>
Change-Id: I95e2ad9ae8f1f50fbecae674367ee7e0855519b1
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It's expected that jgit should work without native git installation.
In such case Security Manager can be configured to deny access to the
files outside of git repository. JGit tries to find cygwin
installation. If Security manager restricts access to some folders
in PATH, it should be considered that those folders are absent
for jgit.
Also JGit tries to detect if symbolic links are supported by OS. If
security manager forbids creation of symlinks, it should be assumed
that symlinks aren't supported.
Bug: 550115
Change-Id: Ic4b243cada604bc1090db6cc1cfd74f0fa324b98
Signed-off-by: Nail Samatov <sanail@yandex.ru>
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