Mercurial > hg
view tests/test-push.t @ 32697:19b9fc40cc51
revlog: skeleton support for version 2 revlogs
There are a number of improvements we want to make to revlogs
that will require a new version - version 2. It is unclear what the
full set of improvements will be or when we'll be done with them.
What I do know is that the process will likely take longer than a
single release, will require input from various stakeholders to
evaluate changes, and will have many contentious debates and
bikeshedding.
It is unrealistic to develop revlog version 2 up front: there
are just too many uncertainties that we won't know until things
are implemented and experiments are run. Some changes will also
be invasive and prone to bit rot, so sitting on dozens of patches
is not practical.
This commit introduces skeleton support for version 2 revlogs in
a way that is flexible and not bound by backwards compatibility
concerns.
An experimental repo requirement for denoting revlog v2 has been
added. The requirement string has a sub-version component to it.
This will allow us to declare multiple requirements in the course
of developing revlog v2. Whenever we change the in-development
revlog v2 format, we can tweak the string, creating a new
requirement and locking out old clients. This will allow us to
make as many backwards incompatible changes and experiments to
revlog v2 as we want. In other words, we can land code and make
meaningful progress towards revlog v2 while still maintaining
extreme format flexibility up until the point we freeze the
format and remove the experimental labels.
To enable the new repo requirement, you must supply an experimental
and undocumented config option. But not just any boolean flag
will do: you need to explicitly use a value that no sane person
should ever type. This is an additional guard against enabling
revlog v2 on an installation it shouldn't be enabled on. The
specific scenario I'm trying to prevent is say a user with a
4.4 client with a frozen format enabling the option but then
downgrading to 4.3 and accidentally creating repos with an
outdated and unsupported repo format. Requiring a "challenge"
string should prevent this.
Because the format is not yet finalized and I don't want to take
any chances, revlog v2's version is currently 0xDEAD. I figure
squatting on a value we're likely never to use as an actual revlog
version to mean "internal testing only" is acceptable. And
"dead" is easily recognized as something meaningful.
There is a bunch of cleanup that is needed before work on revlog
v2 begins in earnest. I plan on doing that work once this patch
is accepted and we're comfortable with the idea of starting down
this path.
| author | Gregory Szorc <gregory.szorc@gmail.com> |
|---|---|
| date | Fri, 19 May 2017 20:29:11 -0700 |
| parents | e58acb4fc510 |
| children | 78fc540c53e1 08cfc4baf3ba |
line wrap: on
line source
================================== Basic testing for the push command ================================== Testing of the '--rev' flag =========================== $ hg init test-revflag $ hg -R test-revflag unbundle "$TESTDIR/bundles/remote.hg" adding changesets adding manifests adding file changes added 9 changesets with 7 changes to 4 files (+1 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ for i in 0 1 2 3 4 5 6 7 8; do > echo > hg init test-revflag-"$i" > hg -R test-revflag push -r "$i" test-revflag-"$i" > hg -R test-revflag-"$i" verify > done pushing to test-revflag-0 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 1 changesets, 1 total revisions pushing to test-revflag-1 searching for changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 1 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 2 changesets, 2 total revisions pushing to test-revflag-2 searching for changes adding changesets adding manifests adding file changes added 3 changesets with 3 changes to 1 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 3 changesets, 3 total revisions pushing to test-revflag-3 searching for changes adding changesets adding manifests adding file changes added 4 changesets with 4 changes to 1 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 4 changesets, 4 total revisions pushing to test-revflag-4 searching for changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 1 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 2 changesets, 2 total revisions pushing to test-revflag-5 searching for changes adding changesets adding manifests adding file changes added 3 changesets with 3 changes to 1 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 3 changesets, 3 total revisions pushing to test-revflag-6 searching for changes adding changesets adding manifests adding file changes added 4 changesets with 5 changes to 2 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 2 files, 4 changesets, 5 total revisions pushing to test-revflag-7 searching for changes adding changesets adding manifests adding file changes added 5 changesets with 6 changes to 3 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 3 files, 5 changesets, 6 total revisions pushing to test-revflag-8 searching for changes adding changesets adding manifests adding file changes added 5 changesets with 5 changes to 2 files checking changesets checking manifests crosschecking files in changesets and manifests checking files 2 files, 5 changesets, 5 total revisions $ cd test-revflag-8 $ hg pull ../test-revflag-7 pulling from ../test-revflag-7 searching for changes adding changesets adding manifests adding file changes added 4 changesets with 2 changes to 3 files (+1 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 4 files, 9 changesets, 7 total revisions $ cd .. Test server side validation during push ======================================= $ hg init test-validation $ cd test-validation $ cat > .hg/hgrc <<EOF > [server] > validate=1 > EOF $ echo alpha > alpha $ echo beta > beta $ hg addr adding alpha adding beta $ hg ci -m 1 $ cd .. $ hg clone test-validation test-validation-clone updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved Test spurious filelog entries: $ cd test-validation-clone $ echo blah >> beta $ cp .hg/store/data/beta.i tmp1 $ hg ci -m 2 $ cp .hg/store/data/beta.i tmp2 $ hg -q rollback $ mv tmp2 .hg/store/data/beta.i $ echo blah >> beta $ hg ci -m '2 (corrupt)' Expected to fail: $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files beta@1: dddc47b3ba30 not in manifests 2 files, 2 changesets, 4 total revisions 1 integrity errors encountered! (first damaged changeset appears to be 1) [1] $ hg push pushing to $TESTTMP/test-validation (glob) searching for changes adding changesets adding manifests adding file changes transaction abort! rollback completed abort: received spurious file revlog entry [255] $ hg -q rollback $ mv tmp1 .hg/store/data/beta.i $ echo beta > beta Test missing filelog entries: $ cp .hg/store/data/beta.i tmp $ echo blah >> beta $ hg ci -m '2 (corrupt)' $ mv tmp .hg/store/data/beta.i Expected to fail: $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files beta@1: manifest refers to unknown revision dddc47b3ba30 2 files, 2 changesets, 2 total revisions 1 integrity errors encountered! (first damaged changeset appears to be 1) [1] $ hg push pushing to $TESTTMP/test-validation (glob) searching for changes adding changesets adding manifests adding file changes transaction abort! rollback completed abort: missing file data for beta:dddc47b3ba30e54484720ce0f4f768a0f4b6efb9 - run hg verify [255] $ cd .. Test push hook locking ===================== $ hg init 1 $ echo '[ui]' >> 1/.hg/hgrc $ echo 'timeout = 10' >> 1/.hg/hgrc $ echo foo > 1/foo $ hg --cwd 1 ci -A -m foo adding foo $ hg clone 1 2 updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg clone 2 3 updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cat <<EOF > $TESTTMP/debuglocks-pretxn-hook.sh > hg debuglocks > true > EOF $ echo '[hooks]' >> 2/.hg/hgrc $ echo "pretxnchangegroup.a = sh $TESTTMP/debuglocks-pretxn-hook.sh" >> 2/.hg/hgrc $ echo 'changegroup.push = hg push -qf ../1' >> 2/.hg/hgrc $ echo bar >> 3/foo $ hg --cwd 3 ci -m bar $ hg --cwd 3 push ../2 --config devel.legacy.exchange=bundle1 pushing to ../2 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files lock: user *, process * (*s) (glob) wlock: free $ hg --cwd 1 --config extensions.strip= strip tip -q $ hg --cwd 2 --config extensions.strip= strip tip -q $ hg --cwd 3 push ../2 # bundle2+ pushing to ../2 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files lock: user *, process * (*s) (glob) wlock: user *, process * (*s) (glob)