* stable-4.8:
Prepare 4.7.3-SNAPSHOT builds
JGit v4.7.2.201807261330-r
Delete all loose refs empty directories
Use java.nio to delete path to get detailed errors
GC: Remove empty references folders
Do not ignore path deletion errors
Change-Id: I6ab2b951dd94a9fc1c4f5283847a3e2ec37d0895
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-4.7:
Prepare 4.7.3-SNAPSHOT builds
JGit v4.7.2.201807261330-r
Delete all loose refs empty directories
Use java.nio to delete path to get detailed errors
GC: Remove empty references folders
Do not ignore path deletion errors
Change-Id: Iadc8275fbaa3d6f7d08a96ab66d49f392f6aab78
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Remove completely the empty directories under refs/<namespace>
including the first level partition of the changes, when they are
completely empty.
Bug: 536777
Change-Id: I88304d34cc42435919c2d1480258684d993dfdca
Signed-off-by: Luca Milanesio <luca.milanesio@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Get the full IOException of the reason why a directory
cannot be removed during GC.
Change-Id: Ia555bce009fa48087a73d677f1ce3b9c0b685b57
Signed-off-by: Luca Milanesio <luca.milanesio@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
When processing a fetch using protocol v2, UploadPack#fetchV2 sends an
extraneous flush pkt when also sending a packfile (#sendPack sending its
own flush pkt). Update that method to only send the flush pkt if the
packfile is not being sent.
Change-Id: I7117a264bccd2d7f3a048645fcb8425a9d78d526
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
In a0c9016abd ("upload-pack: send refs' objects despite "filter"",
2018-07-09), Git updated the "filter" option in the fetch-pack
upload-pack protocol to not filter objects explicitly specified in
"want" lines, even if they match the criterion of the filter. Update
JGit to match that behavior.
Change-Id: Ia4d74326edb89e61062e397e05483298c50f9232
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Propagating more information from the manifest to the superproject
tends to work out well. These particular settings mean:
Recording the remote branch in .gitmodules allows
- "git submodule update --remote" to fetch the right branch
- Gerrit's submodule subscription feature to subscribe from the
right branch, if requested
Recording groups in .gitattributes allows commands like "git clone
--recurse-submodules=:(attr:platform-linux) $superproject" to clone
the correct set of projects.
Recording the shallow bit in .gitmodules means that "git clone
--recurse-submodules" will use shallow clone in submodules where that
was requested in the manifest.
Gerrit's supermanifest plugin records the remote branch and shallow
bit by default already, and most users of that plugin configure it to
record groups in .gitattributes as well, so for most users this will
be a no-op.
Change-Id: Id2ed47cbca5ce822bde517494673c86ab8c58da9
Signed-off-by: Jonathan Nieder <jrn@google.com>
Don't try to delete folders if the merger chooses THEIRS, but all of
BASE, OURS, and THEIRS contain the folder.
Add a test for rebase with auto-stash and subdirectories that
verifies this case. The needless directory deletion and reporting
such directories in getModifiedFiles() was the root cause of bug
536880.
Note even with this fix, bug 536880 will not be fixed in all cases
yet. There may still be cases where the set of modified files ends
up containing directories. This will be dealt with in EGit where
this set is used. (See https://git.eclipse.org/r/#/c/126242/ .)
Bug: 536880
Change-Id: I62b4571a1c1d4415934a6cb4270e0c8036deb2e9
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
04b9f4436 fixed places where compressed bitmaps were holding on to their
full buffers, but missed this StoredBitmap.getBitmap() case where a
bitmap is resonstituted from an xor chain.
Change-Id: I7cf75d9e49c18a1a8a880a4df7e821502edc68a4
Signed-off-by: Terry Parker <tparker@google.com>
Currently SubmoduleAddCommand always uses the path as submodule name.
This patch lets the caller specify a submodule name.
SubmoduleUpdateCommand still does not make use of the submodule name
(see bug 535027) but Git does. To avoid triggering CVE-2018-11235,
do some validation on the name to avoid '..' path components.
[jn: fleshed out commit message, mostly to work around flaky CI]
Change-Id: I6879c043c6d7973556e2080387f23c246e3d76a5
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
Make the method names more consistent and their semantics simpler:
hasRef and seekRef to look up a single exact reference by name and
hasRefsByPrefix and seekRefsByPrefix to look up multiple references by
name prefix.
In particular, splitting hasRef into two separate methods for its
different uses makes DfsReftableDatabase.isNameConflicting easier to
follow.
[jn: fleshed out commit message]
Change-Id: I71106068ff3ec4f7e14dd9eb6ee6b5fab8d14d0b
Signed-off-by: Minh Thai <mthai@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
Reftable implementation of RefDatabase.getRefsByPrefix() should be
more performant, as references are filtered directly by prefix;
instead of fetching the whole subtree then filter by prefix.
Change-Id: If4f5f8c08285ea1eaec9efb83c3d864cea7a1321
Signed-off-by: Minh Thai <mthai@google.com>
The "Building bitmaps" GC phase fails for large repositories (repos with
10M objects use 1.25MB per uncompressed bitmap, and those with long
histories may build >25k bitmaps). Since these bitmaps xor well against
each other, the actual space needed for each compressed bitmap is
usually no more than a few KB. Calling trim() will ensure we aren't
holding on to excess memory.
Change-Id: I40bf78c730b9f6051da6025f9777ce27220a5b0a
Signed-off-by: Terry Parker <tparker@google.com>
This may be convenient for downstream implementers who require a dummy
StoredConfig implementation, rather than making them reimplement the two
abstract StoredConfig methods.
Change-Id: I2b7bc6250d722c2b95d9f99e4eff1e5bf97cb567
After packaging references, the folders containing these references are
not deleted. In a busy repository, this causes operations to slow down
as traversing the references tree becomes longer.
Delete empty reference folders after the loose references have been
packed.
To avoid deleting a folder that was just created by another concurrent
operation, only delete folders that were not modified in the last 30
seconds.
Signed-off-by: Hector Oswaldo Caballero <hector.caballero@ericsson.com>
Change-Id: Ie79447d6121271cf5e25171be377ea396c7028e0
Signed-off-by: Luca Milanesio <luca.milanesio@gmail.com>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Log as warning when an attempt to remove a directory
fails. This helps troubleshooting some bugs like the GC leaving
behind empty directories.
Change-Id: Idb94ce17f8be9668a970c7ecae31436bf434073c
Signed-off-by: Luca Milanesio <luca.milanesio@gmail.com>
* stable-5.0:
ResolveMerger: Fix encoding with string; use bytes
Change-Id: I8e6d0c92144db3bf57ea05f93852ac015458260b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-4.11:
ResolveMerger: Fix encoding with string; use bytes
Change-Id: I40b7b4b3fd6d53bbad32f8f550e885c0e698faf1
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-4.10:
ResolveMerger: Fix encoding with string; use bytes
Change-Id: I2f02298d0ff7caafeca4020cde4fdfa29a46e585
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-4.9:
ResolveMerger: Fix encoding with string; use bytes
Change-Id: Ibd8f2a041b0de6e008a1ea84b92823f8cbc6e3d2
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-4.8:
ResolveMerger: Fix encoding with string; use bytes
Change-Id: Id6a85804695d5dcb32f26ed1d861b7c93577c5e4
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
* stable-4.7:
ResolveMerger: Fix encoding with string; use bytes
Change-Id: If17328fbd101d596a8a16d9c4a190e9b6e120902
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Try to give as much information as possible. The connection's
response message might contain additional hints as to why the
connection could not be established.
Bug: 536541
Change-Id: I7230e4e0be9417be8cedeb8aaab35186fcbf00a5
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
In a new RevWalk, if the first object parsed is one of the
shallow commits, the following happens:
1) RevCommit.parseCanonical() is called on a new "r1" RevCommit.
2) RevCommit.parseCanonical() immediately calls
RevWalk.initializeShallowCommits().
3) RevWalk.initializeShallowCommits() calls lookupCommit(id),
creating and adding a new "r2" version of this same object and
marking its parents empty.
4) RevCommit.parseCanonical() initializes the "r1" RevCommit's
fields, including the parents.
5) RevCommit.parseCanonical()'s caller uses the "r1" commit that
has parents, losing the fact that it is a shallow commit.
This change passes the current RevCommit as an argument to
RevWalk.initializeShallowCommits() so that method can set its
parents empty rather than creating the duplicate "r2" commit.
Change-Id: I67b79aa2927dd71ac7b0d8f8917f423dcaf08c8a
Signed-off-by: Terry Parker <tparker@google.com>
The previous algorithm selected commits by creating bitmaps at
each branch tip, doing a revwalk to populate each bitmap, and
looping in this way:
1) Select the remaining branch with the most commits (the branch
whose bitmap has the highest cardinality)
2) Select well-spaced bitmaps in that branch
3) Remove commits in the selected branch from the remaining
branch-tip bitmaps
4) Repeat at #1
This algorithm gave good commit selection on all branches but
a more uniform selection on "important" branches, where branch
length is the proxy for "important". However the algorithm
required N bitmaps of size M solely for the purpose of commit
selection, where N is the number of branch tips in the primary
GC pack, and M is the number of objects in the pack.
This new algorithm uses branch modification date as the proxy for
"important" branches, replacing the N*M memory allocation with a
single M-sized bitmap and N revwalks from new branch tips to
shared history (which will be short when there is a lot of shared
history).
GcCommitSelectionTest.testDistributionOnMultipleBranches verifies
that this algorithm still yields good coverage on all branches.
Change-Id: Ib6019b102b67eabb379e6b85623e4b5549590e6e
Signed-off-by: Terry Parker <tparker@google.com>
Since no files are actually deleted it makes no sense to fire such an
event.
Change-Id: I66e87afc1791f27fddaa873bafe8bb8b61662535
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
This change fixes the issue [1]. Before this fix, a merge involving
the caching of consecutive yet similar filenames with Norwegian
characters [2] used to throw an IllegalStateException: Duplicate
stages not allowed. This was caused by inaccurate decoding of the
filenames, using string values assuming default encoding. In the
toString method of DirCacheEntry, used before through getPathString,
UTF-8 encoding is used, but the end result becomes default encoding,
through Object's default toString usage. The special characters in
those two consecutive (particular) filenames [2] were becoming the
very same decoded /single character, lending consecutive -but then
identical- filenames. Thus the perceived duplicate 0-staging of the
file(s).
Replace getPathString usage with getRawPath for this specific case,
or use byte array representations of cached entries instead of string.
Adding a test for this change is not possible, as there is no known
way to change the default encoding for filenames such as [2] (e.g.).
JGitTestUtil does write file contents through UTF-8, but encoding like
so does not apply to the actual file name. Hence there is no way to
create files with names properly made of special characters such as
[2]'s. And the test that is necessary for this case assumes such
Norwegian (or similar characters) filenames. Changing the default
locale programmatically in a test has no effect either. And changing
the LANG value passed to the JVM is only possible upon starting it.
[1] https://bugs.chromium.org/p/gerrit/issues/detail?id=9153
[2] <=>
(...)
"a/b/SíÒr-Norge.map",
"a/b/Sør-Norge.map",
(...)
Change-Id: Ib9f2f5297932337c9817064cc09d9f774dd168f4
Signed-off-by: Marco Miller <marco.miller@ericsson.com>
If I run
git config --global protocol.version 2
mkdir repo
cd repo
git init --bare
git remote add origin https://go.googlesource.com/proposal
git fetch --depth=1
git fetch --unshallow
then I expect to have a full history, just as though I had fetched
without --depth in the first place. Instead, it reports success
but does not fetch enough objects:
$ git fsck
notice: HEAD points to an unborn branch (master)
Checking object directories: 100% (256/256), done.
Checking objects: 100% (468/468), done.
broken link from commit 2c6bc83f234085c8eadb7ea33405ce6223c44d1b
to commit 878975cf2b600675b4c905e5d9591bd24541ae9e
missing commit 878975cf2b600675b4c905e5d9591bd24541ae9e
dangling commit 314be00dae78dd526851f5635e6349014e2ad0c2
The false success indicates problems in the client and the server.
Git 2.18-rc2 (the client) ought to have been more defensive, noticing
the incomplete history. The greater error is in JGit (the server),
which neglects to send the objects requested.
When serving protocol v0 requests, JGit sends the correct objects by
taking unshallowCommits into account when generating the pack to send
to the client. Do the same in the protocol v2 code path. I forgot to
do this in v5.0.0.201806050710-rc3~6 (Teach UploadPack shallow fetch
in protocol v2, 2018-03-15).
Reported-by: Russ Cox <rsc@golang.org>
Change-Id: I282b45f47616a641b9e8d6210b4a070d3efdbb9b
Signed-off-by: Jonathan Nieder <jrn@google.com>
Instead, do it when we return the first PlotCommit from next().
On a repository with many refs, getAllRefsByPeeledObjectId() can
take a while. Doing a late initialization simplifies the handling
of a PlotWalk.
EGit, for instance, creates and configures an instance, and then
does the real walk in a background job. With late initialization,
the potentially expensive getAllRefsByPeeledObjectId() also occurs
in that background job.
Bug: 485743
Change-Id: I84c020cf8f7afda6f181778786612b8e6ddd7ed8
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
* stable-5.0:
Prepare 5.0.1-SNAPSHOT builds
JGit v5.0.0.201806131550-r
JGit v5.0.0.201806131210-r
Downgrade Apache httpclient to 4.5.2.v20170210-0925
RefUpdateTest: Refactor to not use deprecated Repository#getAllRefs
Propagate failure of ssh command to caller of SshSupport
Make JGit describe behaves same as c-git for lightweight tags
Fix issues with LFS on GitHub (SSH)
Change-Id: I0471440919adfdbfc72996711d9e0bbd1f3cf477
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
When SshSupport.runSshCommand fails since the executed external ssh
command failed throw a CommandFailedException.
If discovery of LFS server fails due to failure of the
git-lfs-authenticate command chain the CommandFailureException to the
LfsConfigInvalidException in order to allow root cause analysis in the
application using that.
Change-Id: I2f9ea2be11274549f6d845937164c248b3d840b2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
JGit now considers lightweight tags only if the --tags option is set
i.e. `git.describe().setAllTags(true)` has to be set, else the default
is now as in c git:
Only annotated tags are evaluated unless you pass true
equivalent to --tags (or --all) by the option setAllTags.
Hint: This (still) doesn't address any difference between c-git
`--all` and `!--all --tags` behavior;
perhaps this might be a follow up request
Bug: 423206
Change-Id: I9a3699756df0b9c6a7c74a7e8887dea0df17c8e7
Signed-off-by: Marcel Trautwein <me+eclipse@childno.de>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* URIish seems to have a tiny feature (bug?). The path of the URI
starts with a '/' only if the URI has a port set (it seems).
* GitHub does not return SSH authorization on a single line as Gerrit
does - need to account for that.
* Increase the SSH git-lfs-authenticate timeout, as GitHub sometimes
responds slower than expected.
* Guard against NPE in case the download action does not contain any
additional headers.
Change-Id: Icd1ead3d015479fd4b8bbd42ed42129b0abfb95c
Signed-off-by: Markus Duft <markus.duft@ssi-schaefer.com>
Change-Id: Ib4ebc57236bdea663f27295764886413e2550580
Signed-off-by: Michael Keppler <Michael.Keppler@gmx.de>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Jsch checks only for the availability of the algorithms given by
Jsch-internal config keys "CheckCiphers", "CheckKexes", and
"CheckSignatures". If the ssh config defines any algorithms
unknown to Jsch not listed in those keys, it'll still propose them
during the negotiation phase, and run into an NPE later on if the
server happens to propose such an algorithm and it gets chosen.
Jsch reads those "CheckCiphers" and the other values from either a
session-local config, or the global static Jsch config. It bypasses
~/.ssh/config for these values.
Therefore, copy these values from the config as read from
~/.ssh/config into the session-specific config. That makes Jsch
check _all_ configured algorithms up front, discarding any for
which it has no implementation. Thus it proposes only algorithms
it actually can handle.
Bug: 535672
Change-Id: I6a68e54f4d9a3267e895c536bcf3c58099826ad5
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
From the javadoc for Files.list:
"The returned stream encapsulates a DirectoryStream. If timely disposal
of file system resources is required, the try-with-resources construct
should be used to ensure that the stream's close method is invoked
after the stream operations are completed."
This is the only call to Files#newDirectoryStream that is not already in
a try-with-resources.
Change-Id: I91e6c56b5d74e8435457ad6ed9e6b4b24d2aa14e
(cherry picked from commit 1c16ea4601)
* stable-5.0:
Use constant for ".lock"
Simplify locking of FileRepository's index snapshot
Refactor FileRepository.detectIndexChange()
Change-Id: Ifd427711359bcf38b2c877b2143d45bff0c9895a
Signed-off-by: Jonathan Nieder <jrn@google.com>
synchronize on simple Object monitor instead of using ReentrantLock
Change-Id: I897020ab35786336b51b0fef76ea6071aff8aefa
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.0:
Update to latest Photon Orbit R20180606145124
Ensure index change event is fired when index snapshot changed
Change-Id: I8724fc92999d2bc0f8bde5e401156738dd9f1ee6
Signed-off-by: Jonathan Nieder <jrn@google.com>
Ensure that notifyIndexChanged is called every time we call
FileSnapshot.save, except the first.
Change-Id: I5a4e9826e791f518787366ae7c3a0ef3d416d2c1
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-5.0:
Teach UploadPack "filter" in protocol v2 fetch
Refactor test of capabilities output
Refactor v2 advertisement into own function
Refactor parsing of "filter" into its own method
Disallow unknown args to "fetch" in protocol v2
Teach UploadPack shallow fetch in protocol v2
Refactor unshallowCommits to local variable
Add protocol v2 support in http
Give info/refs services more control over response
Change-Id: I1683902222e076e1091795e94790a264550afb7b
Signed-off-by: Jonathan Nieder <jrn@google.com>
If the configuration variable uploadpack.allowfilter is true, advertise
that "filter" is supported, and support it if the client sends such an
argument.
Change-Id: I7de66c0a0ada46ff71c5ba124d4ffa7c47254c3b
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
A subsequent patch needs dynamic generation of this advertisement
depending on a configuration variable in the underlying repository, so
refactor it into a function instead of using a constant list.
Change-Id: Ie00584add1fb56c9e88c7b57f75703981ea5bb85
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
The implementation of protocol v2 will also need to parse the "filter"
option, so refactor it into its own method.
Change-Id: I751f6e6ca63fab873298594653a3885202297a2e
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
JGit's implementation of the fetch command of protocol v2, unlike its
implementation of ls-refs, currently tolerates unknown arguments.
Tighten fetch to not allow unrecognized arguments and add tests to
verify this behavior for both ls-refs and fetch.
Change-Id: I321161d568bd638252fab1a47b06b924d472a669
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Add support for the "shallow" and "deepen" parameters in the "fetch"
command in the fetch-pack/upload-pack protocol v2. Advertise support for
this in the capability advertisement.
TODO: implement deepen-relative, deepen-since, deepen-not
Change-Id: I7ffd80d6c38872f9d713ac7d6e0412106b3766d7
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
This reduces the amount of state held as instance variables in
UploadPack, and makes it easier for a future patch to contain a clearer
version of UploadPack#processShallow.
Change-Id: I6df80b42f9e5118fda1420692e02e417670cced3
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
Teach UploadPack to support protocol v2 with non-bidirectional pipes,
and add support to the HTTP protocol for v2. This is only activated if
the repository's config has "protocol.version" equal to 2.
Change-Id: I093a14acd2c3850b8b98e14936a716958f35a848
Helped-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
Provide a factory for comparators that use the default heuristics except
with a different ordering of PackSources.
Change-Id: I0809b64deb3d0486040076946fdbdad650d69240
There are several ways of comparing DfsPackDescriptions for different
purposes, such as object lookup search order and reftable ordering. Some
of these are later compounded into comparators on other objects, so they
appear in the code as Comparator<DfsReftable>, for example.
Put all the DfsPackDescription comparators in static methods on
DfsPackDescription itself. Stop implementing Comparable, to avoid giving
the impression that there is always one true and correct way of sorting
packs.
Change-Id: Ia5ca65249c13373f7ef5b8a5d1ad50a26577706c
Rather than requiring callers to do their own computations based on the
package-private "category" number, provide an actual
Comparator<PackSource> instance, and explicitly discourage usage of
default Enum comparison.
Construct the default comparator using a builder pattern based on
defining equivalence classes. This gives us the same behavior as the old
category field in PackSource, with an abstraction that does not leak the
implementation detail of comparing rank numbers.
Change-Id: I6757211397ab1bc181d61298e073f88b69dbefc3
In normal operation, the source of a pack should never be null; the DFS
implementation should always know where a pack came from. Existing
implementations in InMemoryRepository and at Google always have the
source available at construction time.
The problem with null PackSources in the previous implementation was it
made the DfsPackDescription#compareTo method intransitive. Specifically,
it skips comparing the sources at all if *either* operand is null.
Suppose we have three descriptions A, B, and C, where all fields are
equal except the PackSource, and:
* A's source is INSERT
* B's source is null
* C's source is RECEIVE
In this case, A.compareTo(B) == 0, and B.compareTo(C) == 0, since all
fields are equal except the source, which is skipped. But
A.compareTo(C) != 0, since A and B have different sources.
Avoid this problem in compareTo by enforcing that the source is never
null. We could of course assign an arbitrary category number to a null
source in order to make comparison transitive[1], but it's simpler to
implement and reason about if the field is non-nullable, and there is no
real-world use case to make it null.
Although a non-null source is required at construction time, the field
is currently still mutable: DfsPackDecscription#setPackSource is used by
DfsInserterTest to mark packs as garbage. This could probably be
avoided as well, allowing us to convert packSource to a final field, but
doing so is beyond the scope of this change.
[1] The astute reader will notice this is already done by
DfsObjDatabase#reftableComparator(). In fact, the reason that
different comparator implementations non-obviously have different
semantics for this nullable field is another reason why it's clearer
to avoid null entirely.
Change-Id: I85a2aaf3fd6d4868f241f7972a0349f087830ffa
The canonical implementation also doesn't. Compare current
code in remote.c, function get_stale_heads_cb.[1] Not handling
symrefs in this case was introduced in canonical git in [2]
in 2008.
[1] https://github.com/git/git/blob/v2.17.0/remote.c#L2259
[2] https://github.com/git/git/commit/740fdd27f0
Bug: 533549
Change-Id: If348d56bb4a96b8aa7141f7e7b5a0d3dd4e7808b
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Callers of getAllRefs that only iterate over the `values()` of the
returned map can be trivially fixed to call getRefDatabase().getRefs()
instead.
Only fix those where the calling method is already declared to throw
IOException, to avoid potential API changes.
Change-Id: I2b05f785077a1713953cfd42df7bf915f889f90b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Callers should instead use getRefDatabase().getRefs(), which does not
swallow the IOException.
Replace @link with @code in the Javadoc of FileRepository, since linking
to the deprecated method causes an error:
Javadoc: The method getAllRefs() from the type Repository is deprecated
Existing callers of the deprecated method are not adapted in this commit
because many of them require more refactoring. They will be done in
separate follow-up commits.
Bug: 534731
Change-Id: Id84e70e4cd7be3d1ca1795512950c6abe3d18ffd
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Callers should use getRefDatabase().peel(ref) instead since it
doesn't swallow the IOException.
Adapt all trivial callers to user the alternative.
DescribeCommand still uses the deprecated method and is not adapted in
this change since it will require more refactoring to add handling of
the IOException.
Change-Id: I14d4a95a5e0570548753b9fc5c03d024dc3ff832
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
This means less cognitive overhead for both implementors and callers,
since this way we can guarantee that they are always synonyms for
RefDatabase#exactRef and RefDatabase#findRef, respectively.
Change-Id: Ic8aeb52fc7ed65672f3f6cd1da39a66908d88baa
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Make FileTreeIterator not enter ignored directories by default. We
only need to enter ignored directories if we do some operation against
git, and there is at least one tracked file underneath an ignored
directory.
Walking ignored directories should be avoided as much as possible as
it is a potential performance bottleneck. Some projects have a lot of
files or very deep hierarchies in ignored directories; walking those
may be costly (especially so on Windows). See for instance also bug
500106.
Provide a FileTreeIterator.setWalkIgnoredDirectories() operation to
force the iterator to iterate also through otherwise ignored
directories. Useful for tests (IgnoreNodeTest, CGitIgnoreTest), or
to implement things like "git ls-files --ignored".
Add tests in DirCacheCheckoutTest, and amend IndexDiffTest to test a
little bit more.
Bug: 388582
Change-Id: I6ff584a42c55a07120a4369fd308409431bdb94a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Callers should use getRefDatabase().getRefsByPrefix(R_TAGS) instead.
Adjust the tests accordingly.
Bug: 534731
Change-Id: Ib28ae365e42720268996ff46e34cae1745ad545c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Remove it from
* package private functions.
* try blocks
* for loops
this was done with the following python script:
$ cat f.py
import sys
import re
import os
def replaceFinal(m):
return m.group(1) + "(" + m.group(2).replace('final ', '') + ")"
methodDecl = re.compile(r"^([\t ]*[a-zA-Z_ ]+)\(([^)]*)\)")
def subst(fn):
input = open(fn)
os.rename(fn, fn + "~")
dest = open(fn, 'w')
for l in input:
l = methodDecl.sub(replaceFinal, l)
dest.write(l)
dest.close()
for root, dirs, files in os.walk(".", topdown=False):
for f in files:
if not f.endswith('.java'):
continue
full = os.path.join(root, f)
print full
subst(full)
Change-Id: If533a75a417594fc893e7c669d2c1f0f6caeb7ca
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Refs are not advertised as part of the protocol v2 capability
advertisement. Don't call AdvertiseRefsHook.
Noticed because many implementations of AdvertiseRefsHook read all
refs in order to call UploadPack#setAdvertisedRefs, causing the
capability advertisement to be as slow as a v0 ref advertisement with
some RefDatabase implementations.
Such an AdvertiseRefsHook is of dubious utility (a better place to
determine which refs are advertised is in the RefDatabase
implementation itself, as in Gerrit), but at any rate since it's not
bringing about any benefit here, we can skip the hook call.
TODO:
- call an appropriate hook instead (https://bugs.eclipse.org/534847)
- add tests
[jn: fleshed out commit message; added TODO notes]
Change-Id: I6eb60ccfb251a45432954467a9ae9c1079a8c8b5
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
With this patch, a server spawned by "jgit daemon" can be accessed using
protocol v2 from a Git client that supports it (for example, "git" with
the appropriate patches). This is only activated if the repository's
config has "protocol.version" be 2.
This required a change to the package-private #execute methods in
DaemonService to allow passing of extra parameters.
This has been tested with a patched Git.
Change-Id: Icf043efec7ce956d72b075fc6dc7a87d5a2da82a
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Add support for the "ofs-delta" parameter in the "fetch" command in
the fetch-pack/upload-pack protocol v2.
Change-Id: I728cf986082fce4ddeb6a6435897692e15e60cc7
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Add support for the "include-tag" parameter in the "fetch" command in
the fetch-pack/upload-pack protocol v2.
In order to determine which tags to include, only objects pointed to by
refs starting with "refs/tags/" are checked. This restriction is for
performance reasons and to match the behavior of Git (see add_ref_tag()
in builtin/pack-objects.c).
Change-Id: I7d70aa09bcc8a525218ff1559e286c2a610258ca
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
When OPTION_INCLUDE_TAG is set, UploadPack#sendPack uses the #refs
instance variable as a source of information of tags. A subsequent patch
will need to supply this information to #sendPack without
modifying #refs, so refactor #sendPack to take in this information
through a parameter instead.
Note that prior to this patch, #refs was used twice in #sendPack: once
to generate the argument to PackWriter#setTagTargets, and once to
determine if any tags need to be included in the packfile. This patch
only updates the latter use, since the former is meant not only for
"true" tag targets but any object that should be hoisted earlier during
packing (see the documentation of PackWriter#setTagTargets).
This patch does not introduce any functionality change.
Change-Id: I70ed65a1041334abeda8d4bac98cce7cae7efcdf
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
Add an internal lineMapOrNull helper that returns null when the file
is binary.
This is simpler than using an exception for control flow and avoids
having to override fillInStackTrace to avoid a performance regression.
Change-Id: Ib8bb8df6a6bbd60c62cfb3b4c484a962a98b7507
This allows to differentiate if index was changed by an external git
command or by JGit itself.
Change-Id: Iae692ba7d9bf01a288b3fb2dc2d07aec9891c712
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This makes binary detection exact in ResolveMerger and DiffFormatter
This has the same intention as
Id4342a199628d9406bfa04af1b023c27a47d4014 but preserves backward
compatibility of the signature of RawParseUtils.lineMap.
Change-Id: Ia24a4e716592bab3363ae24e3a46315a7511154f
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
https://tools.ietf.org/html/rfc7616 says:
5.12. Parameter Randomness
The security of this protocol is critically dependent on the
randomness of the randomly chosen parameters, such as client and
server nonces. These should be generated by a strong random or
properly seeded pseudorandom source (see [RFC4086]).
Change-Id: I4da5316cb1eb3f59ae06c070ce1c3335e9ee87d6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-4.11:
Retry stale file handles on .git/config file
Change-Id: I4fe6152c3c40dde9cb88913cc9706852de0fd712
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-4.9:
Retry stale file handles on .git/config file
Change-Id: I6db7256dbd1c71b23e1231809642ca21e996e066
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
On a local non-NFS filesystem the .git/config file will be orphaned if
it is replaced by a new process while the current process is reading the
old file. The current process successfully continues to read the
orphaned file until it closes the file handle.
Since NFS servers do not keep track of open files, instead of orphaning
the old .git/config file, such a replacement on an NFS filesystem will
instead cause the old file to be garbage collected (deleted). A stale
file handle exception will be raised on NFS clients if the file is
garbage collected (deleted) on the server while it is being read. Since
we no longer have access to the old file in these cases, the previous
code would just fail. However, in these cases, reopening the file and
rereading it will succeed (since it will open the new replacement file).
Since retrying the read is a viable strategy to deal with stale file
handles on the .git/config file, implement such a strategy.
Since it is possible that the .git/config file could be replaced again
while rereading it, loop on stale file handle exceptions, up to 5 extra
times, trying to read the .git/config file again, until we either read
the new file, or find that the file no longer exists. The limit of 5 is
arbitrary, and provides a safe upper bounds to prevent infinite loops
consuming resources in a potential unforeseen persistent error
condition.
Change-Id: I6901157b9dfdbd3013360ebe3eb40af147a8c626
Signed-off-by: Nasser Grainawi <nasser@codeaurora.org>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
That site serves from https now.
Reported-by: Nicholas Glorioso <glorioso@google.com>
Change-Id: I2150a18425a1fe3ab5a022882ffe06ccbde17f16
Signed-off-by: Jonathan Nieder <jrn@google.com>
This is easier to type and makes it clearer that it only returns refs
and not the pseudo-refs returned by getAdditionalRefs. It also puts us
in a better position to add a method to the Repository class later
that delegates to this one without colliding with the existing
Repository#getAllRefs method that returns a Map<String, Ref>.
While at it, clarify the javadoc of getRefs and hasRefs to make the
same point.
Suggested-by: David Pursehouse <david.pursehouse@gmail.com>
Change-Id: I23497c66ac7b5e0c987b91efbc9e9cc29924ca66
Signed-off-by: Jonathan Nieder <jrn@google.com>
Callers can now say:
db.getRefDatabase().hasRefs()
rather than the more verbose:
!db.getRefDatabase().getAllRefs().isEmpty()
The default implementation simply uses getAllRefs().isEmpty(), but a
derived class could possibly override the method with a more efficient
implementation.
Change-Id: I5244520708a1a7d9adb351f10e43fc39d98e22a1
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
The previous version suggested testing w2 first because w1 was used
for hashing, but in fact, hashCode returns w2. The order (w3, w4, w5,
w1, w2) might be better on 64-bit processors too, since it allows
comparing 64 bits at a time, although perhaps on a modern SIMD
processor, the entire 160 bytes would be compared at once anyway.
Change-Id: Ieb69606d3c1456aeff36bffe99a71587ea76e977
Signed-off-by: David Turner <dturner@twosigma.com>
Currently to get all refs, callers must use:
getRefsByPrefix(ALL)
Introduce getAllRefs, which does this, and migrate all existing
callers of getRefsByPrefix(ALL).
Change-Id: I7b1687c162c8ae836dc7db3ccc7ac847863f691d
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
The Javadoc refers to the deprecated getRefs method. Update it to refer
to getRefsByPrefix which is the recommended replacement of getRefs.
Change-Id: I61f2abcf1a3794f40a1746317dbc18aa0beb87a7
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Eclipse warns that DfsReader should be managed by try-with-resource.
As described in 1484d6e (LargePackedWholeObject: Do not reuse released
inflater, 2018-04-26), the DfsReader is owned and closed by the
PackInputStream or explicitly closed in the try block's finally.
Suppress the warning with a brief explanatory comment.
Change-Id: I4187c935742072f3ee7f2d3551a6a98d40fc2702
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
LargePackedWholeObject.openStream produces a stream that allows
reading a large object. This stream holds a DfsReader that takes care
of caching delta bases etc and in particular holds zlib Inflater for
use while reading the each delta in the packfile.
At DfsReader creation time, the Inflater is acquired from a global
InflaterCache to avoid initialization overhead in case there is an
existing Inflater available for reuse. When done with the Inflater,
the DfsReader is responsible for returning it to the cache for reuse.
The DfsReader is AutoClosable to remind the caller to close it and
release the Inflater when finished with it.
b0ac5f9c89 (LargePackedWholeObject:
Refactor to open DfsReader in try-with-resource, 2018-04-11) tried to
clarify the lifetime of the DfsReader but was too aggressive: when
this function returns, PackInputStream owns the DfsReader and is
already going to release it. Worse, the returned InflaterInputStream
holds a reference to the DfsReader's inflater, making releasing the
DfsReader not only unnecessary but unsafe.
The Inflater gets released into the InflaterCache's pool, to be
acquired by another caller that uses it concurrently with the
InflaterInputStream. This results in errors, such as
java.util.zip.ZipException: incorrect header check
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:164)
at java.util.zip.InflaterInputStream.skip(InflaterInputStream.java:208)
at java.io.BufferedInputStream.skip(BufferedInputStream.java:377)
and
java.util.zip.DataFormatException: incorrect header check
at java.util.zip.Inflater.inflateBytes(Native Method)
at java.util.zip.Inflater.inflate(Inflater.java:259)
at org.eclipse.jgit.internal.storage.dfs.DfsReader.inflate(DfsReader.java:783)
at org.eclipse.jgit.internal.storage.dfs.DfsPackFile.decompress(DfsPackFile.java:420)
at org.eclipse.jgit.internal.storage.dfs.DfsPackFile.load(DfsPackFile.java:767)
and
Caused by: java.util.zip.ZipException: incorrect header check
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:164)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
at org.eclipse.jgit.lib.ObjectStream$Filter.read(ObjectStream.java:219)
at org.eclipse.jgit.util.IO.readFully(IO.java:233)
at org.eclipse.jgit.transport.PackParser.checkObjectCollision(PackParser.java:1173)
Verified in production. It should be possible to make a
straightforward unit test for this using the InflaterCache state but
that can wait for a followup commit.
Change-Id: Iaf1d6fd368b64f76c520d215fd270a6098a1f236
Eclipse reports these as errors, so remove them.
Change-Id: Ic53d8003f9faef38fe776af5a73794e7bb1dfc49
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
* Photon throws null analysis errors on the repeated invocation of those
previously null checked methods. Extract them to a local variable to
avoid this. (the null analysis is configured in project properties)
* setUseProtocolV2() misses @since tag. Problem was introduced with
332bc61124. Might be caused by the long
delay of 2 months from creation to merging.
Change-Id: Ibbb1a1580b604b8e7cd4bf7edc4643e292b6b4a8
Signed-off-by: Michael Keppler <Michael.Keppler@gmx.de>
Add support for the "no-progress" parameter in the "fetch" command in
the fetch-pack/upload-pack protocol v2.
Change-Id: I6a6d6b1534f44845254b81d0e1f5c4ba2ac3d10b
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Add support for the "thin-pack" parameter in the "fetch" command in
the fetch-pack/upload-pack protocol v2.
Change-Id: I39a37b2b66a16929137d35c718a3acf2afb6b0b5
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Add basic support for the "fetch" command in the fetch-pack/upload-pack
protocol v2. This patch teaches "have" and "done".
The protocol specification (Documentation/technical/protocol-v2.txt in
the Git project) states:
want <oid>
Indicates to the server an object which the client wants to
retrieve. Wants can be anything and are not limited to
advertised objects.
It is unspecified whether the server should respect the
uploadpack.allowtipsha1inwant option etc. when serving packfiles. This
patch is conservative in that the server respects them.
Change-Id: I3dbec172239712ef9286a15b8407e86b87ea7863
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Add support for the "ref-prefix" parameter in the "ls-refs" command in
the fetch-pack/upload-pack protocol v2.
Change-Id: If9cf93b2646f75d50a11b5f482594f014d59a836
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Once we have read the user's entire command, there is no more need to
buffer our response --- even the strictest servlet engine allows
writing output once the input has been consumed. Noticed when the
analogous code in the "fetch" command (introduced in a later patch)
overflowed its buffer:
java.lang.OutOfMemoryError
at java.io.ByteArrayOutputStream.hugeCapacity(ByteArrayOutputStream.java:123)
[...]
at org.eclipse.jgit.transport.UploadPack.sendPack(UploadPack.java:1905)
at org.eclipse.jgit.transport.UploadPack.sendPack(UploadPack.java:1741)
at org.eclipse.jgit.transport.UploadPack.fetchV2(UploadPack.java:1001)
at org.eclipse.jgit.transport.UploadPack.serviceV2(UploadPack.java:1030)
at org.eclipse.jgit.transport.UploadPack.upload(UploadPack.java:726)
at org.eclipse.jgit.http.server.UploadPackServlet.doPost(UploadPackServlet.java:195)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
Change-Id: I33df56f1cb1c6c2c25ee95426cb7ad665134ac6b
Implement support for Git protocol v2's "ls-refs" command and its
"symrefs" and "peel" parameters.
This adds support for this command to UploadPack but the git://,
ssh://, and git:// transports do not make use of it yet. That will
have to wait for later patches.
Change-Id: I8abc6bcc6ed4a88c165677ff1245625aca01267b
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
Add initial support for protocol v2 of the fetch-pack/upload-pack
protocol. This protocol is described in the Git project in
"Documentation/technical/protocol-v2.txt".
This patch adds support for protocol v2 (without any capabilities) to
UploadPack. Adaptations of callers to make use of this support will
come in subsequent patches.
[jn: split from a larger patch; tweaked the API to make UploadPack
handle parsing the extra parameters and config instead of requiring
each caller to do such parsing]
Change-Id: I79399fa0dce533fdc8c1dbb6756748818cee45b0
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
Most pkt-lines (data-pkts) have the form
pkt-len pkt-payload
where pkt-len is a string of 4 hexadecimal digits representing the
size in bytes of the pkt-line. Since this size includes the size of
the pkt-len, no data-pkt has a length less than 4.
A pkt-line with a length field less than 4 can thus be used for
other purposes. In Git protocol v1, the only such pkt-line was
flush-pkt = "0000"
which was used to mark the end of a stream. Protocol v2 (see
Documentation/technical/protocol-v2.txt in git.git) introduces a
second special pkt-line type:
delim-pkt = "0001"
used to mark the end of a section within a stream, for example to
separate capabilities from the content of a command.
[jn: split out from a larger patch that made use of this support]
Change-Id: I10e7824fa24ed74c4f45624bd490bba978cf5c34
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
The existing RefDatabase#getRefs abstract method (to be implemented by
ref database backends) has the following issues:
- It returns a map with a key (the name of the ref with the prefix
removed) which is potentially superfluous (it can be derived by the
caller if need be) and confusing (in that the prefix is removed).
- The prefix is required to end with a '/', but some backends (e.g.
reftable) have fast search by prefix regardless of what the last
character of the prefix is.
Add a new method #getRefsByPrefix that does not have these issues. This
is non-abstract with a default implementation that uses #getRefs (for
backwards compatibility), but ref database backends can reimplement it.
This also prepares for supporting "ref-prefix" in the "ls-refs" command
in the fetch-pack/upload-pack protocol v2, which does not require that
the prefix end with a '/'.
Change-Id: I4c92f852e8c1558095dd460b5fd7b602c1d82df1
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
Otherwise successful, non-conflicting merges will never get a
Gerrit Change-Id.
Bug: 358206
Change-Id: I9b599ad01d9f7332200c1d81a1ba6ce5ef990ab5
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Various places on the client side of the push were creating unordered
maps and sets of ref names, resulting in ReceivePack processing commands
in an order other than what the client provided. This is normally not
problematic for clients, who don't typically care about the order in
which ref updates are applied to the storage layer.
However, it does make it difficult to write deterministic tests of
ReceivePack or hooks whose output depends on the order in which commands
are processed, for example if informational per-ref messages are written
to a sideband.[1]
Add a test that ensures the ordering of commands both internally in
ReceivePack and in the output PushResult.
[1] Real-world example:
https://gerrit-review.googlesource.com/c/gerrit/+/171871/1/javatests/com/google/gerrit/acceptance/git/PushPermissionsIT.java#149
Change-Id: I7f1254b4ebf202d4dcfc8e59d7120427542d0d9e
Previously @ was allowed e.g. in branch names, but not as the last
character. The case that @ is the last character was not handled.
Change-Id: Ic33870b22236f7a5ec7b54007f1b0cefd9354bfb
Instead of hard-coding the encoding name, use the constant from
StandardCharsets. As a result it is no longer necessary to catch
the UnsupportedEncodingException.
Change-Id: I3cb6de921a78e05e2a894c220e0d5a5c85e172cc
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
This breaks any scenario where native git (with LFS) clones a repository
(and thus installs the hook) and later on JGit is used to push changes.
Change-Id: I2a17753377265a0b612ba3451b9df63a577a1c38
Signed-off-by: Markus Duft <markus.duft@ssi-schaefer.com>
* stable-4.11:
Remove package import for javax.servlet.http from org.eclipse.jgit
Add missing @since tag and silence API error
Change-Id: I2783a15ead26ab19de31a8fb3bfb148ef19de91a
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
These methods were introduced for 4.11.1 so we have to silence the API
error adding API in a service release raises.
Change-Id: Ic847cebbed439912d3979ec2ec1809f77a28f61e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Getting attributes of files on Windows is an expensive operation.
Windows stores file attributes in the directory, so they are
basically available "for free" when a directory is listed. The
implementation of Java's Files.walkFileTree() takes advantage of
that (at least in the OpenJDK implementation for Windows) and
provides the attributes from the directory to a FileVisitor.
Using Files.walkFileTree() with a maximum depth of 1 is thus a
good approach on Windows to get both the file names and the
attributes in one go.
In my tests, this gives a significant speed-up of FileTreeIterator
over the "normal" way: using File.listFiles() and then reading the
attributes of each file individually. The speed-up is hard to
quantify exactly, but in my tests I've observed consistently 30-40%
for staging 500 files one after another, each individually, and up
to 50% for individual TreeWalks with a FileTreeIterator.
On Unix, this technique is detrimental. Unix stores file attributes
differently, and getting attributes of individual files is not costly.
On Unix, the old way of doing a listFiles() and getting individual
attributes (both native operations) is about three times faster than
using walkFileTree, which is implemented in Java.
Therefore, move the operation to FS/FS_Win32 and call it from
FileTreeIterator, so that we can have different implementations
depending on the file system.
A little performance test program is included as a JUnit test (to be
run manually).
While this does speed up things on Windows, it doesn't solve the basic
problem of bug 532300: the iterator always gets the full directory
listing and the attributes of all files, and the more files there are
the longer that takes.
Bug: 532300
Change-Id: Ic5facb871c725256c2324b0d97b95e6efc33282a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
These methods were added after 4.11 so strictly speaking they violate
semantic versioning since new API requires increasing the minor version
number. Hence pretend these methods were introduced in 5.0
Change-Id: I7793ead16577dc1f2ddea09ba6b055103c783555
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Matthias Sohn