If RecursiveMerger finds multiple base commits, it tries to compute
the virtual ancestor to use as a base for the three way merge.
Currently, the content conflicts between ancestors are ignored (file
staged with the conflict markers). If the path is a file in one ancestor
and a dir in the other, it results in NoMergeBaseException
(CONFLICTS_DURING_MERGE_BASE_CALCULATION).
Allow these conflicts by ignoring this unmerged path in the virtual
base. The merger will compute diff in the children instead and it
can be further fixed manually if needed.
Change-Id: Id59648ae1d6bdf300b26fff513c3204317b755ab
Signed-off-by: Marija Savtchouk <mariasavtchouk@google.com>
Subclasses can use the corresponding getter methods.
Change-Id: Iaa9ab01f5a9731a264b28608d2418a9405b601d7
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Add it to the GpgConfig. Change GpgConfig to load the values once only.
Add a parameter to the GpgObjectSigner interface's operations to pass
in a GpgConfig. Update CommitCommand and TagCommand to pass the value
to the signer. Let the signer decide whether it can actually produce
the wanted signature type (openpgp or x509).
No behavior change. But this makes it possible to implement different
signers that might support x509 signatures, or use gpg.program and
shell out to an external GPG executable for signing.
Change-Id: I427f83eb1ece81c310e1cddd85315f6f88cc99ea
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
DateRevQueue is expected to give out the commits that have higher
commit time. But in case of tie(same commit time), it should give
the commit that is inserted first. This is inferred from the
testInsertTie test case written for DateRevQueue. Also that test
case, right now uses just two commits which caused it not to fail
with the current implementation, so added another commit to make
the test more robust.
By fixing the DateRevQueue, we would also match the behaviour of
LogCommand.addRange(c1,c2) with git log c1..c2. A test case for
the same is added to show that current behaviour is not the
expected one.
By fixing addRange(), the order in which commits are applied during
a rebase is altered. Rebase logic should have never depended upon
LogCommand.addRange() since the intended order of addRange() is not
the order a rebase should use. So, modify the RebaseCommand to use
RevWalk directly with TopoNonIntermixSortGenerator.
Add a new LogCommandTest.addRangeWithMerge() test case which creates
commits in the following order:
A - B - C - M
\ /
-D-
Using git 2.30.0, git log B..M outputs: M C D
LogCommand.addRange(B, M) without this fix outputs: M D C
LogCommand.addRange(B, M) with this fix outputs: M C D
Change-Id: I30cc3ba6c97f0960f64e9e021df96ff276f63db7
Signed-off-by: Adithya Chakilam <achakila@codeaurora.org>
Keeping the field updateDate is unecessary, as it is set and used only
in the doRename method.
Change-Id: I1cdd1adf759b75c103480db7a74cec8c2d78b794
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
Deleting non-existing files when converting to reftable without backup
caused convertToReftable to fail. Observed this on a mirrored repository
which had no reflogs. Fix this by skipping missing files during
deletion.
Change-Id: I3bb913d5bfddccc6813677b873006efb849a6ebc
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
before connecting.
A socket gets bound on connect in the next line.
Signed-off-by: Alina Djamankulova <adjama@google.com>
Change-Id: I69a423c592e2fdd582b3c40099137b4ef3d05b39
This would run into an endless loop if the offset given was not zero.
Fix the logic to exit the read loop when the buffer is full.
Luckily all existing uses of this method call it only with offset zero.
Change-Id: I0ec2a4fb43efe4a605d06ac2e88cf155d50e2f1e
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Reachability checkers are retrieved from RevWalk and ObjectWalk objects:
* RevWalk.createReachabilityChecker()
* ObjectWalk.createObjectReachabilityChecker()
Since RevWalks and ObjectWalks are themselves directly instantiated
in hundreds of places (e.g. UploadPack...) overriding them in a
consistent way requires overloading 100s of methods, which isn't
feasible. Moving reachability checker generation to a more central
place solves that problem.
The ObjectReader object seems a good place from which to get
reachability checkers, because reachability checkers return
information about relationships between objects. ObjectDatabases
delegate many operations to ObjectReaders, and reachability bitmaps
are attached to ObjectReaders.
The Bitmapped and Pedestrian reachability checker objects were
package private in the org.eclipse.jgit.revwalk package. This change
makes them public and moves them to the
org.eclipse.jgit.internal.revwalk package. Corresponding tests are
also moved.
Motivation:
1) Reachability checking algorithms need to scale. One of the
internal Android repositories has ~2.4 million refs/changes/*
references, causing bad long tail performance in reachability
checks.
2) Reachability check performance is impacted by repository
topography: number of refs, number of objects, amounts of
related vs. unrelated history.
3) Reachability check performance is also affected by per-branch
access (Gerrit branch permissions) since different users can
see different branches.
4) Reachability check performance isn't affected by any state in a
RevWalk or ObjectWalk.
I don't yet know if a single algorithm will work for all cases in #2
and #3. We may need to evolve the ReachabilityChecker interfaces
over time to solve the Gerrit branch permissions case, or use
Gerrit-specific identity information to solve that in an efficient
way.
This change takes the existing public API and moves it to the
ObjectReader/whole repository level, which is where we can do
consistent customizations for #2 and #3. We intend to upstream the
best of whatever works, but anticipate the need for multiple rounds
of experimentation.
Change-Id: I9185feff43551fb387957c436112d5250486833d
Signed-off-by: Terry Parker <tparker@google.com>
* changes:
Compare getting all refs except specific refs with seek and with filter
Add getsRefsByPrefixWithSkips (excluding prefixes) to ReftableDatabase
Add seekPastPrefix method to RefCursor
We sometimes want to get all the refs except specific prefixes,
similarly to getRefsByPrefix that gets all the refs of a specific
prefix.
We now create a new method that gets all refs matching a prefix except a
set of specific prefixes.
One use-case is for Gerrit to be able to get all the refs except
refs/changes; in Gerrit we often have lots of refs/changes, but very
little other refs. Currently, to get all the refs except refs/changes we
need to get all the refs and then filter the refs/changes, which is very
inefficient. With this method, we can simply skip the unneeded prefix so
that we don't have to go over all the elements.
RefDirectory still uses the inefficient implementation, since there
isn't a simple way to use Refcursor to achieve the efficient
implementation (as done in ReftableDatabase).
Signed-off-by: Gal Paikin <paiking@google.com>
Change-Id: I8c5db581acdeb6698e3d3a2abde8da32f70c854c
Adds a new FileUtils.hasFiles(Path) helper method to correctly handle
the Files.list returned Stream.
These errors were found by compiling the code using JDK11's
javac compiler.
Change-Id: Ie8017fa54eb56afc2e939a2988d8b2c5032cd00f
Signed-off-by: Terry Parker <tparker@google.com>
This method will be used by the follow-up change. This useful if we want
to go over all the changes after a specific ref.
For example, the new method allows us to create a follow-up that would
go over all the refs until we reach a specific ref (e.g refs/changes/),
and then we use seekPastPrefix(refs/changes/) to read the rest of the refs,
thus basically we return all refs except a specific prefix.
When seeking past a prefix, the previous condition that created the
RefCursor still applies. E.g, if the cursor was created by
seekRefsWithPrefix, we can skip some refs but we will not return refs
that are not starting with this prefix.
Signed-off-by: Gal Paikin <paiking@google.com>
Change-Id: I2c02e89c877fe90da8619cb8a4a9a0c865f238ef
In some circumstances (eg. compacting a stack that has deletions), the
result may have a {min, max} range that already exists. In these
cases, we would rename onto an already existing file, which does not
work on Windows. By adding a random suffix, we disambiguate the files,
and avoid this failure scenario.
Change-Id: I0273f99bb845cfbdbd8cdd582b55d3c310505d29
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Heap always copied whole blocks, which leads to AIOOBEs. LocalFile
didn't overwrite the method and thus caused NPEs.
Change-Id: Ia37d4a875df9f25d4825e6bc95fed7f0dff42afb
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
If the caller knows already HTTP Basic authentication will be needed
and if it also already has the username and password, preemptive
authentication is a little bit more efficient since it avoids the
initial 401 response.
Add a setPreemptiveBasicAuthentication(username, password) method
to TransportHttp. Client code could call this for instance in a
TransportConfigCallback. The method throws an IllegalStateException
if it is called after an HTTP request has already been made.
Additionally, a URI can include userinfo. Although it is not
recommended to put passwords in URIs, JGit's URIish and also the
Java URL and URI classes still allow it. The underlying HTTP
connection may omit these fields though. If present, take these
fields as additional source for preemptive Basic authentication if
setPreemptiveBasicAuthentication() has not been called.
No preemptive authentication will be done if the connection is
redirected to a different host.
Add tests.
Bug: 541327
Change-Id: Id00b975e56a15b532de96f7bbce48106d992a22b
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
TransportHttp makes several HTTP requests. The SSLContext and socket
factory must be shared over these requests, otherwise authentication
information may not be propagated correctly from one request to the
next. This is important for authentication mechanisms that rely on
client-side state, like NEGOTIATE (either NTLM, if the underlying HTTP
library supports it, or Kerberos). In particular, SPNEGO cannot
authenticate on a POST request; the authentication must come from the
initial GET request, which implies that the POST request must use the
same SSLContext and socket factory that was used for the GET.
Change the way HTTPS connections are configured. Introduce the concept
of a GitSession, which is a client-side HTTP session over several HTTPS
requests. TransportHttp creates such a session and uses it to configure
all HTTP requests during that session (fetch or push). This gives a way
to abstract away the differences between JDK and Apache HTTP connections
and to configure SSL setup outside.
A GitSession can maintain state and thus give all HTTP requests in a
session the same socket factory.
Introduce an extension interface HttpConnectionFactory2 that adds a
method to obtain a new GitSession. Implement this for both existing
HTTP connection factories. Change TransportHttp to use the new
GitSession to configure HTTP connections.
The old methods for disabling SSL verification still exist to support
possibly external connection and connection factory implementations
that do not make use of the new GitSession yet.
Bug: 535850
Change-Id: Iedf67464e4e353c1883447c13c86b5a838e678f1
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Previously, TransportHttp always used the globally set connection
factory. This is problematic if that global factory is changed in
the middle of a fetch or push operation. Initialize the factory to
use in the constructor, then use that factory for all HTTP requests
made through this transport. Provide a setter and a getter for it
so that client code can customize the factory, if needed, in a
TransportConfigCallback.
Once a factory has been used on a TransportHttp instance it cannot
be changed anymore.
Make the global static factory reference volatile.
Change-Id: I7c6ee16680407d3724e901c426db174a3125ba1c
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
UploadPack may log ACKs in protocol V2 that it doesn't send (if it
got a "done" from the client), or may log ACKs twice. That makes
packet log analysis difficult.
Add a new constructor to PacketLineOut to omit all logging from an
instance, and use it in UploadPack.
Change-Id: Ic29ef5f9a05cbcf5f4858a4e1b206ef0e6421c65
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
This fixes errorprone error [SynchronizeOnNonFinalField]: Synchronizing
on non-final fields is not safe: if the field is ever updated, different
threads may end up locking on different objects.
Change-Id: I42fe5bde825151693e2da2d5b6cd6e1d34038dbc
File#getParent can return null which caused this spotbugs warning.
FS.FileStoreAttributes#get already gets the parent directory if the
passed File is not a directory and checks for null. Hence there is no
need to get the parent directory in the FileSnapshot constructor.
Change-Id: I77f71503cffb05970ab8d9ba55b69c96c53098b9
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
If file doesn't exist set state to MISSING_FILE immediately. Doing that
by calling File#lastModified and File#length effectively does the same
since they set the value to 0 if the file doesn't exist.
Log an error if a different exception than NoSuchFileException is
caught.
Change-Id: I0d4396b9f80446692a088d17522d64f735ce6708
Make all transports request protocol V2 when fetching. Depending on
the transport, set the GIT_PROTOCOL environment variable (file and
ssh), pass the Git-Protocol header (http), or set the hidden
"\0version=2\0" (git anon). We'll fall back to V0 if the server
doesn't reply with a version 2 answer.
A user can control which protocol the client requests via the git
config protocol.version; if not set, JGit requests protocol V2 for
fetching. Pushing always uses protocol V0 still.
In the API, there is only a new Transport.openFetch() version that
takes a collection of RefSpecs plus additional patterns to construct
the Ref prefixes for the "ls-refs" command in protocol V2. If none
are given, the server will still advertise all refs, even in protocol
V2.
BasePackConnection.readAdvertisedRefs() handles falling back to
protocol V0. It newly returns true if V0 was used and the advertised
refs were read, and false if V2 is used and an explicit "ls-refs" is
needed. (This can't be done transparently inside readAdvertisedRefs()
because a "stateless RPC" transport like TransportHttp may need to
open a new connection for writing.)
BasePackFetchConnection implements the changes needed for the protocol
V2 "fetch" command (stateless protocol, simplified ACK handling,
delimiters, section headers).
In TransportHttp, change readSmartHeaders() to also recognize the
"version 2" packet line as a valid smart server indication.
Adapt tests, and run all the HTTP tests not only with both HTTP
connection factories (JDK and Apache HttpClient) but also with both
protocol V0 and V2. The SSH tests are much slower and much more
focused on the SSH protocol and SSH key handling. Factor out two
very simple cloning and pulling tests and make those run with
protocol V2.
Bug: 553083
Change-Id: I357c7f5daa7efb2872f1c64ee6f6d54229031ae1
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
On Android, the co-variant override of ConcurrentHashMap.keySet()
introduced in Java 8 was undone. [1] If compiled Java code calls that
co-variant override directly, one gets a NoSuchMethodError exception
at run-time on Android.
Making the code call that method via Map.keySet() side-steps this
problem.
This is similar to bug 496262, where the same problem cropped up when
compiling with Java 8 against a Java 7 target, but here we cannot use
bootclasspath. We build against Java 8, not against the Android version
of it.
Recent Android versions should have some bytecode "magic" that adds the
co-variant override in bytecode (see the commit referenced in [1]), but
on older Android version this problem may still occur. (Or perhaps the
"magic" is ineffective...) There are two pull requests on Github for
this problem, both from 2020, [2][3] while the Android commit [1] is
from March 2018. Apparently people still occasionally run into this
problem in the wild.
[1] 0e8b937ded/ojluni/src/main/java/java/util/concurrent/ConcurrentHashMap.java (1244)
[2] https://github.com/eclipse/jgit/pull/104
[3] https://github.com/eclipse/jgit/pull/100
Change-Id: I7c07e0cc59871cb7fe60795e22867827fa9c2458
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
If a file exists in head, merge, and the working tree, but not in
the index, and we're doing a force checkout, the checkout must be
an "update", not a "keep".
This is a follow-up on If3a9b9e60064459d187c7db04eb4471a72c6cece.
Bug: 569962
Change-Id: I59a7ac41898ddc1dd90e86b09b621a41fdf45667
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
This fixes two warnings of type LI_LAZY_INIT_STATIC.
Change-Id: I26a7a48aed9d0a0547e908a56b7014a7620fadd8
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Use a dedicated Lock object to lock the scheduler in
RepositoryCache#configureEviction to fix spotbugs warning
JLM_JSR166_UTILCONCURRENT_MONITORENTER.
Change-Id: I003dcf0ed1a0a3f4eea5d8a2f51a07473d28a928
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Path#getParent can return null, return fallback filestore attributes in
that case.
Change-Id: Ic09484d527bc87b27964b625e07373b82412f2da
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This fixes spotbugs warning NP_EQUALS_SHOULD_HANDLE_NULL_ARGUMENT.
This implementation violated the contract defined by
java.lang.Object.equals() because it did not check for null being passed
as the argument. All equals() methods should return false if passed a
null value.
Change-Id: I607f6979613d390aae2f3546b587f63133d6d73c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This fixes UL_UNRELEASED_LOCK_EXCEPTION_PATH raised by spotbugs in
#compactFully.
Change-Id: I370578ad9a027c5c9709d60a1dfafdac0cfca908
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This fixes UL_UNRELEASED_LOCK_EXCEPTION_PATH raised by spotbugs in
#DfsReftableDatabase and #clearCache.
Change-Id: Ifd3189288d2a8e64139c02cd105eb335fa2f68cf
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Also mark the return value @Nullable to enable null analysis in Eclipse.
Change-Id: I5b286d657d432f4b32afd4dd370f76892b115422
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
This reverts commit 022b02dea1.
Removing this API warning filter was wrong since we intentionally
removed the config constant CONFIG_REFSTORAGE_REFTREE.
Change-Id: Ie068e539157cc2312efc8a07feabeb0dd2f75096
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
File#list can return null. Fix the potential NPE by using Files#list
which is also faster since it retrieves directory entries lazily while
File#list retrieves them eagerly.
Change-Id: Idf4bda398861c647587e357326b8bc8b587a2584
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
File#listFiles can return null. Use Files#list which does not return
null and should be faster since it's returning directory entries lazily
while File#listFiles fetches them eagerly.
Change-Id: I3bfe2a52278244fc469143692c06b05d9af0d0d4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Marija Savtchouk