exchange: don't attempt phase exchange if phase-heads was in bundle
The Mercurial core server doesn't yet include phase-heads parts in the
bundle, but our Google-internal server wants to do
that. Unfortunately, the usual exchange still happens even if
phase-heads part is included (including the short-circuited one for
old/publishing servers). That means that even if our server (again,
the Google-internal one, but also future Mercurial core servers)
includes a phase-heads part to indicate that some heads should be
drafts, that would still get overwritten by the phase updating that
happens after. So let's fix that by marking the phase step done if we
receive at least one phase-heads part in the bundle.
Differential Revision: https://phab.mercurial-scm.org/D440
Create repo with old manifest
$ cat << EOF >> $HGRCPATH
> [format]
> usegeneraldelta=yes
> EOF
$ hg init existing
$ cd existing
$ echo footext > foo
$ hg add foo
$ hg commit -m initial
We're using v1, so no manifestv2 entry is in requires yet.
$ grep manifestv2 .hg/requires
[1]
Let's clone this with manifestv2 enabled to switch to the new format for
future commits.
$ cd ..
$ hg clone --pull existing new --config experimental.manifestv2=1
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd new
Check that entry was added to .hg/requires.
$ grep manifestv2 .hg/requires
manifestv2
Make a new commit.
$ echo newfootext > foo
$ hg commit -m new
Check that the manifest actually switched to v2.
$ hg debugdata -m 0
foo\x0021e958b1dca695a60ee2e9cf151753204ee0f9e9 (esc)
$ hg debugdata -m 1
\x00 (esc)
\x00foo\x00 (esc)
I\xab\x7f\xb8(\x83\xcas\x15\x9d\xc2\xd3\xd3:5\x08\xbad5_ (esc)
Check that manifestv2 is used if the requirement is present, even if it's
disabled in the config.
$ echo newerfootext > foo
$ hg --config experimental.manifestv2=False commit -m newer
$ hg debugdata -m 2
\x00 (esc)
\x00foo\x00 (esc)
\xa6\xb1\xfb\xef]\x91\xa1\x19`\xf3.#\x90S\xf8\x06 \xe2\x19\x00 (esc)
Check that we can still read v1 manifests.
$ hg files -r 0
foo
$ cd ..
Check that entry is added to .hg/requires on repo creation
$ hg --config experimental.manifestv2=True init repo
$ cd repo
$ grep manifestv2 .hg/requires
manifestv2
Set up simple repo
$ echo a > file1
$ echo b > file2
$ echo c > file3
$ hg ci -Aqm 'initial'
$ echo d > file2
$ hg ci -m 'modify file2'
Check that 'hg verify', which uses manifest.readdelta(), works
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 2 changesets, 4 total revisions
Check that manifest revlog is smaller than for v1
$ hg debugindex -m
rev offset length delta linkrev nodeid p1 p2
0 0 81 -1 0 57361477c778 000000000000 000000000000
1 81 33 0 1 aeaab5a2ef74 57361477c778 000000000000