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view tests/test-import-git.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outdated and unsupported repo format.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 | c64926b365b6 |
children | 4441705b7111 |
line wrap: on
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$ hg init repo $ cd repo New file: $ hg import -d "1000000 0" -mnew - <<EOF > diff --git a/new b/new > new file mode 100644 > index 0000000..7898192 > --- /dev/null > +++ b/new > @@ -0,0 +1 @@ > +a > EOF applying patch from stdin $ hg tip -q 0:ae3ee40d2079 New empty file: $ hg import -d "1000000 0" -mempty - <<EOF > diff --git a/empty b/empty > new file mode 100644 > EOF applying patch from stdin $ hg tip -q 1:ab199dc869b5 $ hg locate empty empty chmod +x: $ hg import -d "1000000 0" -msetx - <<EOF > diff --git a/new b/new > old mode 100644 > new mode 100755 > EOF applying patch from stdin #if execbit $ hg tip -q 2:3a34410f282e $ test -x new $ hg rollback -q #else $ hg tip -q 1:ab199dc869b5 #endif Copy and removing x bit: $ hg import -f -d "1000000 0" -mcopy - <<EOF > diff --git a/new b/copy > old mode 100755 > new mode 100644 > similarity index 100% > copy from new > copy to copy > diff --git a/new b/copyx > similarity index 100% > copy from new > copy to copyx > EOF applying patch from stdin $ test -f copy #if execbit $ test ! -x copy $ test -x copyx $ hg tip -q 2:21dfaae65c71 #else $ hg tip -q 2:0efdaa8e3bf3 #endif $ hg up -qCr1 $ hg rollback -q Copy (like above but independent of execbit): $ hg import -d "1000000 0" -mcopy - <<EOF > diff --git a/new b/copy > similarity index 100% > copy from new > copy to copy > diff --git a/new b/copyx > similarity index 100% > copy from new > copy to copyx > EOF applying patch from stdin $ hg tip -q 2:0efdaa8e3bf3 $ test -f copy $ cat copy a $ hg cat copy a Rename: $ hg import -d "1000000 0" -mrename - <<EOF > diff --git a/copy b/rename > similarity index 100% > rename from copy > rename to rename > EOF applying patch from stdin $ hg tip -q 3:b1f57753fad2 $ hg locate copyx empty new rename Delete: $ hg import -d "1000000 0" -mdelete - <<EOF > diff --git a/copyx b/copyx > deleted file mode 100755 > index 7898192..0000000 > --- a/copyx > +++ /dev/null > @@ -1 +0,0 @@ > -a > EOF applying patch from stdin $ hg tip -q 4:1bd1da94b9b2 $ hg locate empty new rename $ test -f copyx [1] Regular diff: $ hg import -d "1000000 0" -mregular - <<EOF > diff --git a/rename b/rename > index 7898192..72e1fe3 100644 > --- a/rename > +++ b/rename > @@ -1 +1,5 @@ > a > +a > +a > +a > +a > EOF applying patch from stdin $ hg tip -q 5:46fe99cb3035 Copy and modify: $ hg import -d "1000000 0" -mcopymod - <<EOF > diff --git a/rename b/copy2 > similarity index 80% > copy from rename > copy to copy2 > index 72e1fe3..b53c148 100644 > --- a/rename > +++ b/copy2 > @@ -1,5 +1,5 @@ > a > a > -a > +b > a > a > EOF applying patch from stdin $ hg tip -q 6:ffeb3197c12d $ hg cat copy2 a a b a a Rename and modify: $ hg import -d "1000000 0" -mrenamemod - <<EOF > diff --git a/copy2 b/rename2 > similarity index 80% > rename from copy2 > rename to rename2 > index b53c148..8f81e29 100644 > --- a/copy2 > +++ b/rename2 > @@ -1,5 +1,5 @@ > a > a > b > -a > +c > a > EOF applying patch from stdin $ hg tip -q 7:401aede9e6bb $ hg locate copy2 [1] $ hg cat rename2 a a b c a One file renamed multiple times: $ hg import -d "1000000 0" -mmultirenames - <<EOF > diff --git a/rename2 b/rename3 > rename from rename2 > rename to rename3 > diff --git a/rename2 b/rename3-2 > rename from rename2 > rename to rename3-2 > EOF applying patch from stdin $ hg tip -q 8:2ef727e684e8 $ hg log -vr. --template '{rev} {files} / {file_copies}\n' 8 rename2 rename3 rename3-2 / rename3 (rename2)rename3-2 (rename2) $ hg locate rename2 rename3 rename3-2 rename3 rename3-2 $ hg cat rename3 a a b c a $ hg cat rename3-2 a a b c a $ echo foo > foo $ hg add foo $ hg ci -m 'add foo' Binary files and regular patch hunks: $ hg import -d "1000000 0" -m binaryregular - <<EOF > diff --git a/binary b/binary > new file mode 100644 > index 0000000000000000000000000000000000000000..593f4708db84ac8fd0f5cc47c634f38c013fe9e4 > GIT binary patch > literal 4 > Lc\${NkU|;|M00aO5 > > diff --git a/foo b/foo2 > rename from foo > rename to foo2 > EOF applying patch from stdin $ hg tip -q 10:27377172366e $ cat foo2 foo $ hg manifest --debug | grep binary 045c85ba38952325e126c70962cc0f9d9077bc67 644 binary Multiple binary files: $ hg import -d "1000000 0" -m multibinary - <<EOF > diff --git a/mbinary1 b/mbinary1 > new file mode 100644 > index 0000000000000000000000000000000000000000..593f4708db84ac8fd0f5cc47c634f38c013fe9e4 > GIT binary patch > literal 4 > Lc\${NkU|;|M00aO5 > > diff --git a/mbinary2 b/mbinary2 > new file mode 100644 > index 0000000000000000000000000000000000000000..112363ac1917b417ffbd7f376ca786a1e5fa7490 > GIT binary patch > literal 5 > Mc\${NkU|\`?^000jF3jhEB > > EOF applying patch from stdin $ hg tip -q 11:18b73a84b4ab $ hg manifest --debug | grep mbinary 045c85ba38952325e126c70962cc0f9d9077bc67 644 mbinary1 a874b471193996e7cb034bb301cac7bdaf3e3f46 644 mbinary2 Binary file and delta hunk (we build the patch using this sed hack to avoid an unquoted ^, which check-code says breaks sh on Solaris): $ sed 's/ caret /^/g;s/ dollarparen /$(/g' > 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dLms-Q2;1kB<*Q1a3f8kZr;xX=!Qro@`~@xN*Qj>gx;i;0Z24!~i2uLb`}v > zA?R$|wvC+m caret Ups=*(4lDh*=UN8{5h(A?p#D caret 2N$8u4Z55!q?ZAh(iEEng9_Zi>IgO > z#~**JC8hE4@n{hO&8btT5F*?nC_%LhA3i)PDhh-pB_&1wGrDIl caret *=8x3n&;akBf caret - > zJd&86kq$%%907v caret tgWoQdwI`|oNK%VvU~S#C<o caret F?6c48?Cjj#-4P<>HFD%&|Ni~t > zKJ(|#H`$<5W+6ZkBb213rXonKZLB+X> caret L}J@W6osP3piLD_5?R!`S}*{xLBzFiL4@ > zX+}l{`A%?f@T5tT%ztu60p;)be`fWC`tP@WpO=?cpf8Xuf1OSj6d3f@Ki(ovDYq%0 > z{4ZSe`kOay5@=lAT!}vFzxyemC{sXDrhuYM0Y#ZI1r%ipD9W11{w=@&xgJ}t2x;ep > P00000NkvXXu0mjfZ5|Er > > literal 0 > HcmV?d00001 > > EOF $ hg import -d "1000000 0" -m delta quote-hack.patch applying quote-hack.patch $ rm quote-hack.patch $ hg manifest --debug | grep delta 9600f98bb60ce732634d126aaa4ac1ec959c573e 644 delta $ hg import -d "1000000 0" -m delta - <<'EOF' > diff --git a/delta b/delta > index 8c9b7831b231c2600843e303e66b521353a200b3..0021dd95bc0dba53c39ce81377126d43731d68df 100644 > GIT binary patch > delta 49 > zcmZ1~yHs|=21Z8J$r~9bFdA-lVv=EEw4WT$qRf2QSa5SIOAHI6(&k4T8H|kLo4vWB > FSO9ZT4bA`n > > delta 49 > zcmV-10M7rV9i<(xumJ(}ld%Di0Xefm0vrMXpOaq%BLm9I%d>?9Tm%6Vv*HM70RcC& > HOA1;9yU-AD > > EOF applying patch from stdin $ hg manifest --debug | grep delta 56094bbea136dcf8dbd4088f6af469bde1a98b75 644 delta Filenames with spaces: $ sed 's,EOL$,,g' <<EOF | hg import -d "1000000 0" -m spaces - > diff --git a/foo bar b/foo bar > new file mode 100644 > index 0000000..257cc56 > --- /dev/null > +++ b/foo bar EOL > @@ -0,0 +1 @@ > +foo > EOF applying patch from stdin $ hg tip -q 14:4b79479c9a6d $ cat "foo bar" foo Copy then modify the original file: $ hg import -d "1000000 0" -m copy-mod-orig - <<EOF > diff --git a/foo2 b/foo2 > index 257cc56..fe08ec6 100644 > --- a/foo2 > +++ b/foo2 > @@ -1 +1,2 @@ > foo > +new line > diff --git a/foo2 b/foo3 > similarity index 100% > copy from foo2 > copy to foo3 > EOF applying patch from stdin $ hg tip -q 15:9cbe44af4ae9 $ cat foo3 foo Move text file and patch as binary $ echo a > text2 $ hg ci -Am0 adding text2 $ hg import -d "1000000 0" -m rename-as-binary - <<"EOF" > diff --git a/text2 b/binary2 > rename from text2 > rename to binary2 > index 78981922613b2afb6025042ff6bd878ac1994e85..10efcb362e9f3b3420fcfbfc0e37f3dc16e29757 > GIT binary patch > literal 5 > Mc$`b*O5$Pw00T?_*Z=?k > > EOF applying patch from stdin $ cat binary2 a b \x00 (no-eol) (esc) $ hg st --copies --change . A binary2 text2 R text2 Invalid base85 content $ hg rollback repository tip rolled back to revision 16 (undo import) working directory now based on revision 16 $ hg revert -aq $ hg import -d "1000000 0" -m invalid-binary - <<"EOF" > diff --git a/text2 b/binary2 > rename from text2 > rename to binary2 > index 78981922613b2afb6025042ff6bd878ac1994e85..10efcb362e9f3b3420fcfbfc0e37f3dc16e29757 > GIT binary patch > literal 5 > Mc$`b*O.$Pw00T?_*Z=?k > > EOF applying patch from stdin abort: could not decode "binary2" binary patch: bad base85 character at position 6 [255] $ hg revert -aq $ hg import -d "1000000 0" -m rename-as-binary - <<"EOF" > diff --git a/text2 b/binary2 > rename from text2 > rename to binary2 > index 78981922613b2afb6025042ff6bd878ac1994e85..10efcb362e9f3b3420fcfbfc0e37f3dc16e29757 > GIT binary patch > literal 6 > Mc$`b*O5$Pw00T?_*Z=?k > > EOF applying patch from stdin abort: "binary2" length is 5 bytes, should be 6 [255] $ hg revert -aq $ hg import -d "1000000 0" -m rename-as-binary - <<"EOF" > diff --git a/text2 b/binary2 > rename from text2 > rename to binary2 > index 78981922613b2afb6025042ff6bd878ac1994e85..10efcb362e9f3b3420fcfbfc0e37f3dc16e29757 > GIT binary patch > Mc$`b*O5$Pw00T?_*Z=?k > > EOF applying patch from stdin abort: could not extract "binary2" binary data [255] Simulate a copy/paste turning LF into CRLF (issue2870) $ hg revert -aq $ cat > binary.diff <<"EOF" > diff --git a/text2 b/binary2 > rename from text2 > rename to binary2 > index 78981922613b2afb6025042ff6bd878ac1994e85..10efcb362e9f3b3420fcfbfc0e37f3dc16e29757 > GIT binary patch > literal 5 > Mc$`b*O5$Pw00T?_*Z=?k > > EOF >>> fp = file('binary.diff', 'rb') >>> data = fp.read() >>> fp.close() >>> file('binary.diff', 'wb').write(data.replace('\n', '\r\n')) $ rm binary2 $ hg import --no-commit binary.diff applying binary.diff $ cd .. Consecutive import with renames (issue2459) $ hg init issue2459 $ cd issue2459 $ hg import --no-commit --force - <<EOF > diff --git a/a b/a > new file mode 100644 > EOF applying patch from stdin $ hg import --no-commit --force - <<EOF > diff --git a/a b/b > rename from a > rename to b > EOF applying patch from stdin a has not been committed yet, so no copy data will be stored for b. $ hg debugstate a 0 -1 unset b $ hg ci -m done $ cd .. Renames and strip $ hg init renameandstrip $ cd renameandstrip $ echo a > a $ hg ci -Am adda adding a $ hg import --no-commit -p2 - <<EOF > diff --git a/foo/a b/foo/b > rename from foo/a > rename to foo/b > EOF applying patch from stdin $ hg st --copies A b a R a Prefix with strip, renames, creates etc $ hg revert -aC undeleting a forgetting b $ rm b $ mkdir -p dir/dir2 $ echo b > dir/dir2/b $ echo c > dir/dir2/c $ echo d > dir/d $ hg ci -Am addbcd adding dir/d adding dir/dir2/b adding dir/dir2/c prefix '.' is the same as no prefix $ hg import --no-commit --prefix . - <<EOF > diff --git a/dir/a b/dir/a > --- /dev/null > +++ b/dir/a > @@ -0,0 +1 @@ > +aaaa > diff --git a/dir/d b/dir/d > --- a/dir/d > +++ b/dir/d > @@ -1,1 +1,2 @@ > d > +dddd > EOF applying patch from stdin $ cat dir/a aaaa $ cat dir/d d dddd $ hg revert -aC forgetting dir/a (glob) reverting dir/d (glob) $ rm dir/a prefix with default strip $ hg import --no-commit --prefix dir/ - <<EOF > diff --git a/a b/a > --- /dev/null > +++ b/a > @@ -0,0 +1 @@ > +aaa > diff --git a/d b/d > --- a/d > +++ b/d > @@ -1,1 +1,2 @@ > d > +dd > EOF applying patch from stdin $ cat dir/a aaa $ cat dir/d d dd $ hg revert -aC forgetting dir/a (glob) reverting dir/d (glob) $ rm dir/a (test that prefixes are relative to the cwd) $ mkdir tmpdir $ cd tmpdir $ hg import --no-commit -p2 --prefix ../dir/ - <<EOF > diff --git a/foo/a b/foo/a > new file mode 100644 > --- /dev/null > +++ b/foo/a > @@ -0,0 +1 @@ > +a > diff --git a/foo/dir2/b b/foo/dir2/b2 > rename from foo/dir2/b > rename to foo/dir2/b2 > diff --git a/foo/dir2/c b/foo/dir2/c > --- a/foo/dir2/c > +++ b/foo/dir2/c > @@ -0,0 +1 @@ > +cc > diff --git a/foo/d b/foo/d > deleted file mode 100644 > --- a/foo/d > +++ /dev/null > @@ -1,1 +0,0 @@ > -d > EOF applying patch from stdin $ hg st --copies M dir/dir2/c A dir/a A dir/dir2/b2 dir/dir2/b R dir/d R dir/dir2/b $ cd .. Renames, similarity and git diff $ hg revert -aC forgetting dir/a (glob) undeleting dir/d (glob) undeleting dir/dir2/b (glob) forgetting dir/dir2/b2 (glob) reverting dir/dir2/c (glob) $ rm dir/a dir/dir2/b2 $ hg import --similarity 90 --no-commit - <<EOF > diff --git a/a b/b > rename from a > rename to b > EOF applying patch from stdin $ hg st --copies A b a R a $ cd .. Pure copy with existing destination $ hg init copytoexisting $ cd copytoexisting $ echo a > a $ echo b > b $ hg ci -Am add adding a adding b $ hg import --no-commit - <<EOF > diff --git a/a b/b > copy from a > copy to b > EOF applying patch from stdin abort: cannot create b: destination already exists [255] $ cat b b Copy and changes with existing destination $ hg import --no-commit - <<EOF > diff --git a/a b/b > copy from a > copy to b > --- a/a > +++ b/b > @@ -1,1 +1,2 @@ > a > +b > EOF applying patch from stdin cannot create b: destination already exists 1 out of 1 hunks FAILED -- saving rejects to file b.rej abort: patch failed to apply [255] $ cat b b #if symlink $ ln -s b linkb $ hg add linkb $ hg ci -m addlinkb $ hg import --no-commit - <<EOF > diff --git a/linkb b/linkb > deleted file mode 120000 > --- a/linkb > +++ /dev/null > @@ -1,1 +0,0 @@ > -badhunk > \ No newline at end of file > EOF applying patch from stdin patching file linkb Hunk #1 FAILED at 0 1 out of 1 hunks FAILED -- saving rejects to file linkb.rej abort: patch failed to apply [255] $ hg st ? b.rej ? linkb.rej #endif Test corner case involving copies and multiple hunks (issue3384) $ hg revert -qa $ hg import --no-commit - <<EOF > diff --git a/a b/c > copy from a > copy to c > --- a/a > +++ b/c > @@ -1,1 +1,2 @@ > a > +a > @@ -2,1 +2,2 @@ > a > +a > diff --git a/a b/a > --- a/a > +++ b/a > @@ -1,1 +1,2 @@ > a > +b > EOF applying patch from stdin Test email metadata $ hg revert -qa $ hg --encoding utf-8 import - <<EOF > From: =?UTF-8?q?Rapha=C3=ABl=20Hertzog?= <hertzog@debian.org> > Subject: [PATCH] =?UTF-8?q?=C5=A7=E2=82=AC=C3=9F=E1=B9=AA?= > > diff --git a/a b/a > --- a/a > +++ b/a > @@ -1,1 +1,2 @@ > a > +a > EOF applying patch from stdin $ hg --encoding utf-8 log -r . changeset: *:* (glob) tag: tip user: Rapha\xc3\xabl Hertzog <hertzog@debian.org> (esc) date: * (glob) summary: \xc5\xa7\xe2\x82\xac\xc3\x9f\xe1\xb9\xaa (esc) $ cd ..