The working tree iterator now supports providing an object id
for submodule entries and this value should be used instead
of recomputing it again in AddCommand.
Change-Id: I30082514c23fc65968bb78add5ad69a1ca95cf3a
Submodules present in the index but missing from the working
directory should not be staged for deletion when AddCommand
is called with the update flag set to true.
This mirrors the behavior of CGit. Submodules can still be
staged for deletion by running by using the RmCommand.
Change-Id: Iee508a67f9621269d1c28d422f88c6b8dd9f8e6e
If after resolving all conflicts nothing is left to commit, return
an according result, so that downstreams (EGit, ...) can behave like
cgit, and display a nice message informing the user.
Currently, EGit displays a "HEAD advanced fast forward" message, which
is absolutely not helpful at all.
This is the basic API revamping required to get that state communicated
to the outside world (EGit).
Bug: 336812
Change-Id: If2665005cf54a5b51c0fe80bad019fa42b0205af
* changes:
Try to send HTTP error messages over sideband
Extract the capability parsing logic in {Upload,Receive}Pack
Make capability strings in BasePack{Fetch,Push}Connection public
Fix a typo in "capabilities" in ReceivePack
When a client POSTs to /git-{upload,receive}-pack, the first line
includes their client capabilities. As soon as the C git client sends
side-band(-64k), it goes into a state where it chokes on data not sent
in a valid sideband channel.
GitSmartHttpTools.sendError() is called early in the request, likely
before a {Upload,Receive}Pack handler is assigned or, even so, before it
has read the request. In some cases we must read the first line manually
within sendError() to tell whether sideband is needed.
Change-Id: I8277fd45a4ec3b71fa8f87404b4f5d1a09e0f384
Checkout command should throw o.e.j.api.errors.CheckoutConflictException
which is a GitAPIException not o.e.j.errors.CheckoutConflictException.
PullCommand should rethrow the API exception as a JGitInternalException.
Bug: 356922
Change-Id: I865c4905997d9834c85a97fbe7287604daf99075
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This will be the message and person used for the commit
of stashed working directory changes.
Bug: 372884
Change-Id: I2501b080f6b94e826cf7dba3fd526ae5c1d969d1
Signed-off-by: Chris Aniszczyk <zx@twitter.com>
Previously were void which made them inconsistent with
the fluid setter pattern used in other commands.
Change-Id: Idb81dfc7bb097306f0c5d6e34f91a2bbab501668
Signed-off-by: Chris Aniszczyk <zx@twitter.com>
HttpURLConnection.getErrorStream can return null which is
currently not guarded against and will throw an NPE preventing
the actual error response code from bubbling up.
Change-Id: I04fb8dbda16b7df3b82fc579088a303b2fd21e87
The duplication has been introduced when merging
I08e1369e142bb19f42a8d7bbb5a7d062cc8533fc and
I18adc63596f4657516ccc6d704a561924c79d445. The former should have been
manually rebased. It also missed a copyright update in ApplyCommandTest.
Change-Id: I18fe6108220f964524fb16b719604222aa7abee6
CRLF only works for small files, where small is the size of the
buffer, i.e. about 8K. This QD fix reallocates the buffer to be
large enough.
Bug: 369780
Change-Id: Ifc34ad204fbf5986b257a5c616e4a8c601e8261a
Commit 9169e7f9ec failed to add
org.eclipse.jgit/META-INF/eclipse.inf in order to fix bug 372845 since
JGit is not yet built by Tycho. Hence explicitly including it.
Bug: 372845
Change-Id: I6cb12327a237d69fbfe3d5e77d8a6ad7de442ad5
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Initially fill in the current DirCacheEntry field guarding
against a null index tree and use that variable instead of
calling getDirCacheEntry() on a possibly null DirCacheBuildIterator.
Change-Id: I16f388a16636aefdb07d66dae5d05655009e2a0e
This prevents existing entries from being cleared when the
.gitmodules config is saved after the new submodule configuration
is added.
Change-Id: I66841f5e758a7527e2e6e25cf1318e5fea91a909
Signed-off-by: Kevin Sawicki <kevin@github.com>
It seems pack200 became unable to correctly pack the bundle
org.eclipse.jgit (see bug 372845). Hence mark it to be excluded from
this packing step following the workaround which worked for
org.eclipse.jst.jsf.core (bug 335806).
Bug: 372845
Change-Id: I2e3d20645ac49125472ddc235afbe9f3c7480caf
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This is intended to replace the RefFilter interface (but does not yet,
for backwards compatibility). That interface required lots of extra
scanning and copying in filter cases such as only advertising a subtree
of the refs directory. Instead, provide a hook that can be executed
right before ref advertisement, using the public methods on
UploadPack/ReceivePack to explicitly set the map of advertised refs.
Change-Id: I0067019a191c8148af2cfb71a675f2258c5af0ca
Callers may want to format and flush their own output, for example in a
PreReceiveHook that creates its own TextProgressMonitor. The actual
underlying msgOut can change over the lifetime of ReceivePack, so we
implement a small wrapper.
Change-Id: I57b6d6cad2542aaa93dcadc06cb3e933e81bcd3d
This allows callers who know in advance whether a command is UPDATE or
UPDATE_NONFASTFORWARD to specify this in the constructor rather than
with a separate method call.
Change-Id: Iae483594a4ff370ff75d17a7b0648c5590b3d1bd
This allows a PreReceiveHook to easily "take over" all of the
ReceiveCommands passed to it, preventing any of them from being handled
within the ReceivePack core.
Change-Id: I2a8c1fc44e8dcadf22cd97a8ec4ee79d4d9d08f1
This change replaces calls to getEntryObjectId and getEntryFileMode
with the existing method local variables for the index, merge, and
head tree iterators.
Change-Id: I75d1edfdd192a009fc916102ec052434c6302d00
Applies the changes in a stashed commit to the local working
directory and index
Bug: 309355
Change-Id: I9fd5ede8affc7f0060ffa7c5cec34573b6fa2b1b
Signed-off-by: Chris Aniszczyk <zx@twitter.com>
Adds a new command to stash the index and working directory
changes in a commit stored in refs/stash
Bug: 309355
Change-Id: I2ce85b1601b74b07e286a3f99feb358dfbdfe29c
Signed-off-by: Chris Aniszczyk <zx@twitter.com>
This will perform the equivalent of running a
'git checkout -- .' at the root of a repository
Change-Id: I3e2dd563700999bc063effdd3640499c8ed08136
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Instead of using the locale from the SystemReader we let the
SystemReader create the date formats without passing the locale.
Bug 368756
Change-Id: I6be9e07af804a08f3f3ac2d2d526ef594eed19e3
Signed-off-by: Daniel Megert <daniel_megert@ch.ibm.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
EolCanonicalizingInputStream may also be used in combination with
.gitattributes. If .gitattributes states that a file is of type text, line
endings have to be canonicalized even if the actual file content seems
to be binary.
Change-Id: Ie4ccdfc5cb91fbd55e06f51146cf5c7c84b8e18b
There are a few situations where you want to delete files or folders but
where you are not interested in getting exceptions if this doesn't
succeed. E.g. if you delete garbage in the GC class you want that if
certain files can't be deleted the command succeeds. Maybe the next
garbage collector run has more luck not to interfere with a virus
scanner run on Windows. Therefore an option is added to
FileUtils.delete() not to report errors in such cases.
Change-Id: I58994d8c481e591dcbb0f2be7dfa562e125f0f08
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
* stable-1.3:
Prepare post 1.3.0.201202151440-r build
JGit 1.3.0.201202151440-r
Generate conflicts and index updates on file mode changes
Change-Id: Ie99780ef5cdea7b3ea1ea076282fe0a25f14f469
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Handle more cases for file mode changes. Especially make sure that the
following cases are handled correctly.
Case 1)
An entry in the working tree, HEAD tree, and merge tree have
different modes and different content.
Prior Outcome:
Dirty working tree content is replaced and file mode
changes are lost.
New Outcome:
Conflict is generated.
Case 2)
An entry in the index and merge tree have the same content
but different modes but both modes are file type modes.
Prior Outcome:
File mode in working tree is not updated and the working
directory is dirty.
New Outcome:
Index is updated and the working directory is clean.
Bug: 363772
Change-Id: I224602d68228eb419813986807f1eeab77e9c302
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Also-by: Kevin Sawicki <kevin@github.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
* stable-1.3:
Prepare post 1.3.0.201202121842-rc4 builds
JGit 1.3.0.201202121842-rc4
Support gitdir references in working tree .git file
Support committing submodule updates
Update iplog tool's README
Change-Id: Id70f4d4b059b03d4fa6fbd9137b81a337e9c48e8
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
A '.git' file in a repository's working tree root is now parsed
as a ref to a folder located elsewhere. This supports submodules
having their repository location outside of the parent repository's
working directory such as in the parent repository's '.git/modules'
directory.
This adds support to BaseRepositoryBuilder for repositories created
with the '--separate-git-dir' option specified to 'git init'.
Change-Id: I73c538f6d845bdbc0c4e2bce5a77f900cf36e1a9
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Interpret submodule URLs that start with './' or '../' as
relative to either the configured remote for the HEAD branch,
or 'origin', or the parent repository working directory if no
remote URL is configured
Bug: 368536
Change-Id: Id4985824023b75cd45cd64a4dd9d421166391e10
This is used by EGit change I1e1caca561d1b0a0c194bfc42e64b698f42c6e6a to
show branch status in decoration.
It can also be used for providing the same output as C Git in "git
status".
Change-Id: I8d2b108c89905c3f0496f3d517879596740787c0
Signed-off-by: Robin Stocker <robin@nibor.org>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Getting the name of the remote-tracking branch given a branch is not so
easy to get right. This class provides a way to do that and could be
used for more branch config related things (e.g. in PullCommand).
Change-Id: I896a2384217936c8b672df8b81c9599f5c350458
Signed-off-by: Robin Stocker <robin@nibor.org>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
It returns the number of commits that are in start and not in end.
Useful for calculating how much a branch is ahead of another one.
Change-Id: I09f7d9b049beea417da7ff32c9f8bf0d4ed46a7f
Signed-off-by: Robin Stocker <robin@nibor.org>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Revision strings that end with a ':' with no trailing path
should return the tree associated with the current ref parsed
Bug: 368370
Change-Id: I7c7617a77bd418bad4e570be2d1e9002ad280762
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
Java's BufferedOutputStream swallows any errors that occur when flushing
the buffer in close().
This class overrides close to make sure an error during the final
flush is reported back to the caller.
Change-Id: I74a82b31505fadf8378069c5f6554f1033c28f9b
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
In many cases applications want to handle TransportException hence
expose it as an API exception.
Change-Id: I64b885ecfb1a35bd93c89026c6298d1820ba69d0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This patch introduces CRLF handling to the DirCacheCheckout and
WorkingTreeIterator supporting the AutoCRLF for add, checkout
reset and status and hopefully some other places that depende
on the underlying logic of the affected API's.
The patch includes test cases for the Status command provided by
Tomasz Zarna for bug 353867.
The core.eol and core.safecrlf options are not yet supported.
Bug: 301775
Bug: 353867
Change-Id: I2280a2dc0698829475de6a662a6c6e80b1df7663
This will allow recovery from a LockFailedException where
the file associated with an exception is passed to FileUtils.unlock
to attempt an unlock on the file so the operation can be retried
Change-Id: I580166d386126bfb54a318a65253070a6e325936
API commands either throw GitAPIException or JGitInternalException.
Also add missing javadoc and reduce nesting of catch blocks.
Change-Id: I9a3b302e1b3f373ee11a977a0e3d6213bfbd3cdf
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Kevin Sawicki <kevin@github.com>
Currently files in a repository marked as executable will have
that mode unset when modified and committed on systems that
do not support detection of this mode since the working tree
iterator will never report this mode for any entries.
This change updates WorkingTreeIterator to be able
to determine the target file mode to be used for the index
through consideration of the configured WorkingTreeOptions.
Bug: 364956
Change-Id: Iae496baa011b8a59d9329ec73615482b03d34a5a
This allows all the settings of a TransportCommand to be
configured on the clone commands that are run by submodule
add/update
Change-Id: I93bfe5a91d430200de8c7f1e32a60cb990aa58ea
Adds the following commands:
- Add
- Init
- Status
- Sync
- Update
This also updates AddCommand so that file patterns added that
are submodules can be staged in the index.
Change-Id: Ie5112aa26430e5a2a3acd65a7b0e1d76067dc545
Signed-off-by: Kevin Sawicki <kevin@github.com>
Signed-off-by: Chris Aniszczyk <zx@twitter.com>
* stable-1.2:
JGit v1.2.0.201112221803-r
Expose unmerged paths when revert fails
Enforce the use of Java5 API:s only (with a few exceptions)
Change-Id: Ib18d41a65e68cc47fb63114fcce27a16820d0692
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
The places where ResolveMerger was doing content merges have been
refactored. The goal was to have one single method where content merge
was done and to factor out other topics (updating the index, updating
the working tree) into own methods. This was done to allow adding
pluggable content mergers in change
I7817e2123d254f3eeb315b47a61d2c55bd202c12
Change-Id: I8529697b197372a284bcd5ab2c9ba1adb925a520
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
This will allows calling classes to handle lock failures
without checking against the message and will also provide
access to the file that could not be locked.
Change-Id: I95bc59e1330a7af71ae3b0485c4516299193f504
Revision strings such as 'master@{0}' can now be resolved
by Repository.resolve by reading the reflog for the ref and
returning the commit for the entry number specified.
This still throws an exception for cases not supported
such as 'master@{yesterday}'.
Change-Id: I6162777d6510e083565a77cac4545cda5a9aefb3
* stable-1.2:
Add API checking using clirr
Fix MergeCommandTest to pass if File.executable is not supported
Fix ResolveMerger not to add paths with FileMode 0
Change-Id: I86e7194a40acd6dfa3d433f1d17c01bdf5bb0d9c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This only works with Eclipse 3.6 and newer and requires installation
of new package. Documentation is not very good, but there is a blog
about it here:
http://eclipseandjazz.blogspot.com/2011/10/of-invalid-references-to-system.html
API checking is especially useful on OS X where Java5 is not readily
available.
Change-Id: I3c0ad460874a21c073f5ac047146cbf5d31992b4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
In order to generate API reports run: mvn clirr:clirr
The reports are generated to the folder
target/site/clirr-report.html under the respective
project.
In order to check API compatibility and fail the build
on incompatible changes run: mvn clirr:check
For now we compare the API against the latest release
1.1.0.201109151100-r.
Bug: 336849
Change-Id: I21baaf3a6883c5b4db263f712705cc7b8ab6d888
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Kevin Sawicki <kevin@github.com>
This also updates DiffFormatter to not write path lines
for entries that have the same object id
Bug: 361570
Change-Id: I830a78e2babf472503630a7aa020ebfd5c7e69c6
Once a pack has been committed with commitPack(), we know that the pack
list has changed but we don't re-scan the underlying storage.
Change-Id: Ia7b35df4442a5f5dfe7e817edcc77b44b5410d08
All setters for JGit API commands return the command instance, follow
the builder pattern.
Change-Id: Id2bbc3f1300bb179887c4d2d6dd72925bde55f24
Signed-off-by: Kevin Sawicki <kevin@github.com>
When ResolveMerger finds a path where it has to do a content merge it
will try the content merge and if that succeeds it'll add the newly
produced content to the index. For the FileMode of this new index entry
it blindly copies the FileMode it finds for that path in the common base
tree. If by chance the common base tree does not contain this path it'll
try to add FileMode 0 (MISSING) to the index.
One could argue that this can't happen: how can the ResolveMerger
successfully (with no conflicts) merge two contents if there is no
common base? This was due to another bug in ResolveMerger. It failed to
find out that for two files which differ only in the FileMode (e.g. 644
vs. 755) it should not try a content merge.
Change-Id: I7a00fe1a6c610679be475cab8a3f8aa4c08811a1
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
* stable-1.2:
Fix version.sh
Throw API exception when MergeCommand hits checkout conflicts
Add methods for configuring platform emulation
Fix history rendering not to occupy too many lanes
Fix History rendering
Change-Id: If71cc760423ae2b76c7435ca4830edc1745556de
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Allows callers to effectively run multiple hooks and loggers without
modifying the UploadPack/ReceivePack interface.
Change-Id: I5b388816b63036ffff08ef3a9b857ccb764cb8c4
When MergeCommand hit checkout conflicts it did throw an internal JGit
exception org.eclipse.jgit.errors.CheckoutConflictException instead of
org.eclipse.jgit.api.errors.CheckoutConflictException which it
declares to throw. Hence translate the internal exception to the
exception declared in the API.
Bug: 327573
Change-Id: I1efcd93a43ecbf4a40583e0fc9d8d53cffc98cae
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
ReflogCommand command was throwing an incorrect exception type
when an IOException was wrapped and rethrown from the underlying
ReflogReader. The IOException cause is now provided to the thrown
exception as well.
Change-Id: I9f1842c2d414d3e9c658843f9b448bc18891748e
Since FileHeader provides toString() method (via DiffEntry) we could add
a similar method to HunkHeader.
Change-Id: I7886e5b8f775fa8e8478ac5af37d90b6ef677d8b
This will be the case on the initial commit to a repository
and the ref update should expect a non-existent ref
Change-Id: Iaa06e47e6e8cc4a0281c7683b367d4806dd980ea
There was a bug in history rendering which caused jgit to use too
many lanes in case lanes get repositioned. Looking at commit
90c11cbaeb in JGit was one example. Vadim
Dmitriev found the problem and the solution.
Bug: 365460
Change-Id: I6024265b7a593dcfd4fc612d0baf6652a0092ff4
Also-by: Vadim Dmitriev <dmgloss@mail.ru>
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
There was the possibility that during history rendering we draw a lane
"trough" a passed commit. Vadim Dmitriev found that out in bug 335818.
I added the needed check to that block of code where it was missing.
Bug: 335818
Change-Id: Ic944193b2aca55ff3eb0235d46afa60b7896aa0f
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
We do this for the the names that have an explicit scheme and
do it both ways. The URIish is parsed before decoding. Only
a few special characters are encoded for the path part of the
URI, i.e. space, non-ASCII and control characters. The percent
encoding is assumed to be a stream encoding so we interpret it
as UTF-8.
Change-Id: I82d1910df9472e21d7212a2b984ff7d8fb2cbf0f
There was the possibility that during history rendering we draw a lane
"trough" a passed commit. Vadim Dmitriev found that out in bug 335818.
I added the needed check to that block of code where it was missing.
Bug: 335818
Change-Id: Ic944193b2aca55ff3eb0235d46afa60b7896aa0f
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
This parallels the CGit behavior of always using refs/heads/master
when it matches the remote advertised HEAD commit.
Change-Id: I5a5cd1516b58d116e334056aba1ef7990697ec30
The method canAmend was added to RepositoryState. It returns true if
amending the HEAD commit is allowed in the current repository state.
Change-Id: Idd0c4eea83a23c41340789b7b877959b457d951e
Signed-off-by: Jens Baumgart <jens.baumgart@sap.com>
When SSH user/password authentication failed this may have been caused
by changed credentials on the server side. When the SSH credentials of a
user change the SSH connection needs to be re-established and
credentials which may have been stored by the credentials provider
need to be reset in order to enable prompting for the new credentials.
Bug: 356233
Change-Id: I7d64c5f39b68a9687c858bb68a961616eabbc751
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Moves the check from inside the loop to outside the loop
and returns immediately if the HEAD advertisded ref is null
Change-Id: I539da6cafb4f73610b8e00259e32bd4d57f4f4cc
Commit 13931236b9ee2895a98ffdbdacbd0f895956d8a8 in C Git (2011-11-02)
changed the message format:
-Merge remote branch 'origin/foo'
+Merge remote-tracking branch 'origin/foo'
This change does the same in EGit to be consistent.
Change-Id: I7d9c5afa95771dbfe6079b5f89a10b248fee0172
Signed-off-by: Robin Stocker <robin@nibor.org>
Throw a NoHeadException when Repository.getFullBranch
returns null
Bug: 351543
Change-Id: I666cd5b67781508a293ae553c6fe5c080c8f4d99
Signed-off-by: Kevin Sawicki <kevin@github.com>
ReceivePack (and PackParser) can be configured with the
maxObjectSizeLimit in order to prevent users from pushing too large
objects to Git. The limit check is applied to all object types
although it is most likely that a BLOB will exceed the limit. In all
cases the size of the object header is excluded from the object size
which is checked against the limit as this is the size of which a BLOB
object would take in the working tree when checked out as a file.
When an object exceeds the maxObjectSizeLimit the receive-pack will
abort immediately.
Delta objects (both offset and ref delta) are also checked against the
limit. However, for delta objects we will first check the size of the
inflated delta block against the maxObjectSizeLimit and abort
immediately if it exceeds the limit. In this case we even do not know
the exact size of the resolved delta object but we assume it will be
larger than the given maxObjectSizeLimit as delta is generally only
chosen if the delta can copy more data from the base object than the
delta needs to insert or needs to represent the copy ranges. Aborting
early, in this case, avoids unnecessary inflating of the (huge) delta
block.
Unfortunately, it is too expensive (especially for a large delta) to
compute SHA-1 of an object that causes the receive-pack to abort.
This would decrease the value of this feature whose main purpose is to
protect server resources from users pushing huge objects. Therefore
we don't report the SHA-1 in the error message.
Change-Id: I177ef24553faacda444ed5895e40ac8925ca0d1e
Signed-off-by: Sasa Zivkov <sasa.zivkov@sap.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This allows callers to determine why the revert
did not complete successfully
Change-Id: Ie44bb8523cac388b63748bc69ebdd3c3a3665d06
Signed-off-by: Kevin Sawicki <kevin@github.com>
The DfsReader must offer every representation of an object that
exists on the local repository when PackWriter asks for them. This
is necessary to identify objects in the thin pack part that are also
in the cached pack that will be appended onto the end of the stream.
Without looking at all alternatives, PackWriter may pack the same
object twice (once in the thin section, again in the cached base
pack). This may cause the command line C version to go into an
infinite loop when repacking the resulting repository, as it may see
a delta chain cycle with one of those duplicate copies of the object.
Previously the DfsReader tried to avoid looking at packs that it
might not care about, but this is insufficient, as all versions
must be considered during pack generation.
Change-Id: Ibf4a3e8ea5c42aef16404ffc42a5781edd97b18e
Consider two objects A->B where A uses B as a delta base, and these
are in the same source pack file ordered as "A B".
If cached packs is enabled and B is also in the cached pack that
will be appended onto the end of the thin pack, and both A, B are
supposed to be in the thin pack, PackWriter must consider the fact
that A's base B is an edge object that claims to be part of the
new pack, but is actually "external" and cannot be written first.
If the object reuse system considered B candidates fist this bug
does not arise, as B will be marked as edge due to it existing in
the cached pack. When the A candidates are later examined, A sees a
valid delta base is available as an edge, and will not later try to
"write base first" during the writing phase.
However, when the reuse system considers A candidates first they
see that B will be in the outgoing pack, as it is still part of
the thin pack, and arrange for A to be written first. Later when A
switches from being in-pack to being an edge object (as it is part
of the cached pack) the pointer in B does not get its type changed
from ObjectToPack to ObjectId, so B thinks A is non-edge.
We work around this case by also checking that the delta base B
is non-edge before writing the object to the pack. Later when A
writes its object header, delta base B's ObjectToPack will have
an offset == 0, which makes isWritten() = false, and the OBJ_REF
delta format will be used for A's header. This will be resolved by
the client to the copy of B that appears in the later cached pack.
Change-Id: Ifab6bfdf3c0aa93649468f49bcf91d67f90362ca
Packs can contain up to 2^32-1 objects, which exceeds the range of a
Java int. Try harder to accept higher object counts in some cases by
using long more often when we are working with the object count value.
This is a trivial refactoring, we may have to make even more changes
to the object handling code to support more than 2^31-1 objects.
Change-Id: I8cd8146e97cd1c738ad5b48fa9e33804982167e7
Annotated tags are relatively rare and currently are scheduled in a
pack file near the commits, decreasing the time it takes to resolve
client requests reading tags as part of a history traversal.
Putting them first before the commits allows the storage system to
page in the tag area, and have it relatively hot in the LRU when
the nearby commit area gets examined too. Later looking at the
tree and blob data will pollute the cache, making it more likely
the tags are not loaded and would require file IO.
Change-Id: I425f1f63ef937b8447c396939222ea20fdda290f
This counter always was running 1 higher, because it incremented
after the queue was exhausted (and every object was processed). Move
increments to be after the queue has provided a result, to ensure
we do not show a higher in-progress count than total count.
Change-Id: I97f815a0492c0957300475af409b6c6260008463
Make the code more clear with a simple refactoring of the boolean
logic into a method that describes the condition we are looking
for on each pack file. A cached pack is possible if there exists
a tips collection, and the collection is non-empty.
Change-Id: I4ac42b0622b39d159a0f4f223e291c35c71f672c
Double ' characters are needed for variables to appear in
single quotes. Variables surrounded with a s single ' will
not be replaced when formatted
Change-Id: I0182c1f679ba879ca19dd81bf46924f415dc6003
Signed-off-by: Kevin Sawicki <kevin@github.com>
As the method name and its javadoc clearly state that this method can
return null we can ignore this FindBugs warning.
Change-Id: I366435e26eda5d910f5d1a907db51f08efd4bb8c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Stored in a weak concurrent hash map, which we clean up while iterating.
Usually the weak reference behavior should not be necessary because
PackWriters should be released with release(), but we still want to
avoid leaks when dealing with broken client code.
Change-Id: I337abb952ac6524f7f920fedf04065edf84d01d2
Memory usage is dominated by three terms:
- The maximum memory allocated to each delta window.
- The maximum size of a single file held in memory during delta search.
- ObjectToPack instances owned by the writer.
For the first two terms, rather than doing complex instrumentation of
the DeltaWindows, we just overestimate based on the config parameters
(though we may underestimate if the maximum size is not set).
For the ObjectToPack instances, we do some rough byte accounting of the
underlying Java object representation.
Change-Id: I23fe3cf9d260a91f1aeb6ea22d75af8ddb9b1939
Exposes essentially the same state machine to the programmer as is
exposed to the client via a ProgressMonitor, using a wrapper around
beginTask()/endTask().
Change-Id: Ic3622b4acea65d2b9b3551c668806981fa7293e3
Decorators need to know whether folders in the working tree contain only
untracked files. This change enhances IndexDiffFilter to report such
folders. This works only together with treewalks which operate in
default traversal mode. For treewalks which process entries in
postorder mode (files are walked before their parent folder is walked)
this detection doesn't work.
Bug: 359264
Change-Id: I9298d1e3ccac0aec8bbd4e8ac867bc06a5c89c9f
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Signed-off-by: Jens Baumgart <jens.baumgart@sap.com>
Signed-off-by: Chris Aniszczyk <zx@twitter.com>
Mark the treeWalk as recursive; otherwise following renames only works
for toplevel files.
Bug: 302549
Change-Id: I70867928eadf332b0942f8bf6877a3acb3828c87
Signed-off-by: Carsten Pfeiffer <carsten.pfeiffer@gebit.de>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Chris Aniszczyk <zx@twitter.com>
Refactored the three common transport configuration options:
credentials provider, timeout, and transport config callback
into a new TransportCommand base class which is now extended
by all commands that use a Transport object during execution.
Bug: 349188
Change-Id: I90c2c14fb4e3cc4712905158f9047153a0c235c2
Signed-off-by: Kevin Sawicki <kevin@github.com>
Signed-off-by: Chris Aniszczyk <zx@twitter.com>
A few places were still using GitIndex. Replacing it was fairly
simple, but there is a difference in test outcome in
ReadTreeTest.testUntrackedConflicts. I believe the new behavior
is good, since we do not update neither the index, not the worktree.
Change-Id: I4be5357b7b3139dded17f77e07a140addb213ea7
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
This includes merging ReadTreeTest into DirCacheCheckoutTest and
converting IndexDiffTest to use DirCache only. The GitIndex specific
T0007GitIndex test remains.
GitIndex is deprecated. Let us speed up its demise by focusing the
DirCacheCheckout tests to using DirCache instead.
This also add explicit deprecation comments to methods that depend
on GitIndex in Repository and TreeEntry. The latter is deprecated in
itself.
Change-Id: Id89262f7fbfee07871f444378f196ded444f2783
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
Any RuntimeException or Error in this block will leave the lock
held by the caller thread, which can later result in deadlock or
just cache requests hanging forever because they cannot get to
the lock object.
Wrap everything in try/finally to prevent the lock from hanging,
even though a RuntimeException or Error should never happen in
any of these code paths.
Change-Id: Ibb3467f7ee4c06f617b737858b4be17b10d936e0
The cache starts with a single empty Ref that has no data, as the
clock list does not support being empty. When this Ref is removed,
the size has to be decremented from the associated DfsPackKey,
which was previously null. Make it always be non-null.
Change-Id: I2af99903e8039405ea6d67f383576ffa43839cff
* changes:
DfsBlockCache: Update hits to not include contains()
Add a listener for changes to a DfsObjDatabase's pack files
Expose the reverse index size in the DfsPackDescription
Add a DfsPackFile method to get the number of cached bytes
Expose the list of pack files in the DfsBlockCache
Add a DFS repository description and reference it in each pack
Clarify the docstring of DfsBlockCache.reconfigure()
DFS: A storage layer for JGit
Intended for cross-request use, so only refers to
DfsRepositoryDescriptions rather than DfsRepositorys.
Change-Id: I2633e472c9264d91d632069f608d53d4bdd0fc09
Callers may want to inspect the contents of the cache, which this allows
them to do in a read-only fashion without any locking.
Change-Id: Ifd78e8ce34e26e5cc33e9dd61d70c593ce479ee0
Just as DfsPackDescription describes a pack but does not imply it is
open in memory, a DfsRepositoryDescription describes a repository at a
basic level without it necessarily being open.
Change-Id: I890b5fccdda12c1090cfabf4083b5c0e98d717f6
The docstring was copied from the local filesystem cache code, which
actually attempted to reconfigure the cache on the fly. The DFS cache is
designed to be "reconfigured" exactly once.
Change-Id: Ia0b01f5d6b6b3d3a68d65a5c229ff67c1cede5bc
In practice the DHT storage layer has not been performing as well as
large scale server environments want to see from a Git server.
The performance of the DHT schema degrades rapidly as small changes
are pushed into the repository due to the chunk size being less than
1/3 of the pushed pack size. Small chunks cause poor prefetch
performance during reading, and require significantly longer prefetch
lists inside of the chunk meta field to work around the small size.
The DHT code is very complex (>17,000 lines of code) and is very
sensitive to the underlying database round-trip time, as well as the
way objects were written into the pack stream that was chunked and
stored on the database. A poor pack layout (from any version of C Git
prior to Junio reworking it) can cause the DHT code to be unable to
enumerate the objects of the linux-2.6 repository in a completable
time scale.
Performing a clone from a DHT stored repository of 2 million objects
takes 2 million row lookups in the DHT to locate the OBJECT_INDEX row
for each object being cloned. This is very difficult for some DHTs to
scale, even at 5000 rows/second the lookup stage alone takes 6 minutes
(on local filesystem, this is almost too fast to bother measuring).
Some servers like Apache Cassandra just fall over and cannot complete
the 2 million lookups in rapid fire.
On a ~400 MiB repository, the DHT schema has an extra 25 MiB of
redundant data that gets downloaded to the JGit process, and that is
before you consider the cost of the OBJECT_INDEX table also being
fully loaded, which is at least 223 MiB of data for the linux kernel
repository. In the DHT schema answering a `git clone` of the ~400 MiB
linux kernel needs to load 248 MiB of "index" data from the DHT, in
addition to the ~400 MiB of pack data that gets sent to the client.
This is 193 MiB more data to be accessed than the native filesystem
format, but it needs to come over a much smaller pipe (local Ethernet
typically) than the local SATA disk drive.
I also never got around to writing the "repack" support for the DHT
schema, as it turns out to be fairly complex to safely repack data in
the repository while also trying to minimize the amount of changes
made to the database, due to very common limitations on database
mutation rates..
This new DFS storage layer fixes a lot of those issues by taking the
simple approach for storing relatively standard Git pack and index
files on an abstract filesystem. Packs are accessed by an in-process
buffer cache, similar to the WindowCache used by the local filesystem
storage layer. Unlike the local file IO, there are some assumptions
that the storage system has relatively high latency and no concept of
"file handles". Instead it looks at the file more like HTTP byte range
requests, where a read channel is a simply a thunk to trigger a read
request over the network.
The DFS code in this change is still abstract, it does not store on
any particular filesystem, but is fairly well suited to the Amazon S3
or Apache Hadoop HDFS. Storing packs directly on HDFS rather than
HBase removes a layer of abstraction, as most HBase row reads turn
into an HDFS read.
Most of the DFS code in this change was blatently copied from the
local filesystem code. Most parts should be refactored to be shared
between the two storage systems, but right now I am hesistent to do
this due to how well tuned the local filesystem code currently is.
Change-Id: Iec524abdf172e9ec5485d6c88ca6512cd8a6eafb
Actually this is not ok according to the RFC, but this implementation is
ment to be Git compatible. A '\' is needed when the authentication
requires or allows authentication to a Windows domain where the
user name can be specified as DOMAIN\user.
Change-Id: If02f258c032486f1afd2e09592a3c7069942eb8b
Open a repository for submodule entries that have a child .git
directory and use the resolved HEAD commit as the entry's id.
Change-Id: I68d6e127f018b24ee865865a2dd3011a0e21453c
Signed-off-by: Kevin Sawicki <kevin@github.com>
Kevin Sawicki