view tests/test-subrepo-recursion.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outdated and unsupported repo format.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.

Create test repository:

  $ hg init repo
  $ cd repo
  $ echo x1 > x.txt

  $ hg init foo
  $ cd foo
  $ echo y1 > y.txt

  $ hg init bar
  $ cd bar
  $ echo z1 > z.txt

  $ cd ..
  $ echo 'bar = bar' > .hgsub

  $ cd ..
  $ echo 'foo = foo' > .hgsub

Add files --- .hgsub files must go first to trigger subrepos:

  $ hg add -S .hgsub
  $ hg add -S foo/.hgsub
  $ hg add -S foo/bar
  adding foo/bar/z.txt (glob)
  $ hg add -S
  adding x.txt
  adding foo/y.txt (glob)

Test recursive status without committing anything:

  $ hg status -S
  A .hgsub
  A foo/.hgsub
  A foo/bar/z.txt
  A foo/y.txt
  A x.txt

Test recursive diff without committing anything:

  $ hg diff --nodates -S foo
  diff -r 000000000000 foo/.hgsub
  --- /dev/null
  +++ b/foo/.hgsub
  @@ -0,0 +1,1 @@
  +bar = bar
  diff -r 000000000000 foo/y.txt
  --- /dev/null
  +++ b/foo/y.txt
  @@ -0,0 +1,1 @@
  +y1
  diff -r 000000000000 foo/bar/z.txt
  --- /dev/null
  +++ b/foo/bar/z.txt
  @@ -0,0 +1,1 @@
  +z1

Commits:

  $ hg commit -m fails
  abort: uncommitted changes in subrepository 'foo'
  (use --subrepos for recursive commit)
  [255]

The --subrepos flag overwrite the config setting:

  $ hg commit -m 0-0-0 --config ui.commitsubrepos=No --subrepos
  committing subrepository foo
  committing subrepository foo/bar (glob)

  $ cd foo
  $ echo y2 >> y.txt
  $ hg commit -m 0-1-0

  $ cd bar
  $ echo z2 >> z.txt
  $ hg commit -m 0-1-1

  $ cd ..
  $ hg commit -m 0-2-1

  $ cd ..
  $ hg commit -m 1-2-1

Change working directory:

  $ echo y3 >> foo/y.txt
  $ echo z3 >> foo/bar/z.txt
  $ hg status -S
  M foo/bar/z.txt
  M foo/y.txt
  $ hg diff --nodates -S
  diff -r d254738c5f5e foo/y.txt
  --- a/foo/y.txt
  +++ b/foo/y.txt
  @@ -1,2 +1,3 @@
   y1
   y2
  +y3
  diff -r 9647f22de499 foo/bar/z.txt
  --- a/foo/bar/z.txt
  +++ b/foo/bar/z.txt
  @@ -1,2 +1,3 @@
   z1
   z2
  +z3

Status call crossing repository boundaries:

  $ hg status -S foo/bar/z.txt
  M foo/bar/z.txt
  $ hg status -S -I 'foo/?.txt'
  M foo/y.txt
  $ hg status -S -I '**/?.txt'
  M foo/bar/z.txt
  M foo/y.txt
  $ hg diff --nodates -S -I '**/?.txt'
  diff -r d254738c5f5e foo/y.txt
  --- a/foo/y.txt
  +++ b/foo/y.txt
  @@ -1,2 +1,3 @@
   y1
   y2
  +y3
  diff -r 9647f22de499 foo/bar/z.txt
  --- a/foo/bar/z.txt
  +++ b/foo/bar/z.txt
  @@ -1,2 +1,3 @@
   z1
   z2
  +z3

Status from within a subdirectory:

  $ mkdir dir
  $ cd dir
  $ echo a1 > a.txt
  $ hg status -S
  M foo/bar/z.txt
  M foo/y.txt
  ? dir/a.txt
  $ hg diff --nodates -S
  diff -r d254738c5f5e foo/y.txt
  --- a/foo/y.txt
  +++ b/foo/y.txt
  @@ -1,2 +1,3 @@
   y1
   y2
  +y3
  diff -r 9647f22de499 foo/bar/z.txt
  --- a/foo/bar/z.txt
  +++ b/foo/bar/z.txt
  @@ -1,2 +1,3 @@
   z1
   z2
  +z3

Status with relative path:

  $ hg status -S ..
  M ../foo/bar/z.txt
  M ../foo/y.txt
  ? a.txt

XXX: filtering lfilesrepo.status() in 3.3-rc causes these files to be listed as
added instead of modified.
  $ hg status -S .. --config extensions.largefiles=
  M ../foo/bar/z.txt
  M ../foo/y.txt
  ? a.txt

  $ hg diff --nodates -S ..
  diff -r d254738c5f5e foo/y.txt
  --- a/foo/y.txt
  +++ b/foo/y.txt
  @@ -1,2 +1,3 @@
   y1
   y2
  +y3
  diff -r 9647f22de499 foo/bar/z.txt
  --- a/foo/bar/z.txt
  +++ b/foo/bar/z.txt
  @@ -1,2 +1,3 @@
   z1
   z2
  +z3
  $ cd ..

Cleanup and final commit:

  $ rm -r dir
  $ hg commit --subrepos -m 2-3-2
  committing subrepository foo
  committing subrepository foo/bar (glob)

Test explicit path commands within subrepos: add/forget
  $ echo z1 > foo/bar/z2.txt
  $ hg status -S
  ? foo/bar/z2.txt
  $ hg add foo/bar/z2.txt
  $ hg status -S
  A foo/bar/z2.txt
  $ hg forget foo/bar/z2.txt
  $ hg status -S
  ? foo/bar/z2.txt
  $ hg forget foo/bar/z2.txt
  not removing foo/bar/z2.txt: file is already untracked (glob)
  [1]
  $ hg status -S
  ? foo/bar/z2.txt
  $ rm foo/bar/z2.txt

Log with the relationships between repo and its subrepo:

  $ hg log --template '{rev}:{node|short} {desc}\n'
  2:1326fa26d0c0 2-3-2
  1:4b3c9ff4f66b 1-2-1
  0:23376cbba0d8 0-0-0

  $ hg -R foo log --template '{rev}:{node|short} {desc}\n'
  3:65903cebad86 2-3-2
  2:d254738c5f5e 0-2-1
  1:8629ce7dcc39 0-1-0
  0:af048e97ade2 0-0-0

  $ hg -R foo/bar log --template '{rev}:{node|short} {desc}\n'
  2:31ecbdafd357 2-3-2
  1:9647f22de499 0-1-1
  0:4904098473f9 0-0-0

Status between revisions:

  $ hg status -S
  $ hg status -S --rev 0:1
  M .hgsubstate
  M foo/.hgsubstate
  M foo/bar/z.txt
  M foo/y.txt
  $ hg diff --nodates -S -I '**/?.txt' --rev 0:1
  diff -r af048e97ade2 -r d254738c5f5e foo/y.txt
  --- a/foo/y.txt
  +++ b/foo/y.txt
  @@ -1,1 +1,2 @@
   y1
  +y2
  diff -r 4904098473f9 -r 9647f22de499 foo/bar/z.txt
  --- a/foo/bar/z.txt
  +++ b/foo/bar/z.txt
  @@ -1,1 +1,2 @@
   z1
  +z2

#if serve
  $ cd ..
  $ hg serve -R repo --debug -S -p $HGPORT -d --pid-file=hg1.pid -E error.log -A access.log
  adding  = $TESTTMP/repo (glob)
  adding foo = $TESTTMP/repo/foo (glob)
  adding foo/bar = $TESTTMP/repo/foo/bar (glob)
  listening at http://*:$HGPORT/ (bound to *:$HGPORT) (glob) (?)
  adding  = $TESTTMP/repo (glob) (?)
  adding foo = $TESTTMP/repo/foo (glob) (?)
  adding foo/bar = $TESTTMP/repo/foo/bar (glob) (?)
  $ cat hg1.pid >> $DAEMON_PIDS

  $ hg clone http://localhost:$HGPORT clone  --config progress.disable=True
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 5 changes to 3 files
  updating to branch default
  cloning subrepo foo from http://localhost:$HGPORT/foo
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 7 changes to 3 files
  cloning subrepo foo/bar from http://localhost:$HGPORT/foo/bar (glob)
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 1 files
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cat clone/foo/bar/z.txt
  z1
  z2
  z3

  $ cat access.log
  * "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  * "GET /?cmd=batch HTTP/1.1" 200 - * (glob)
  * "GET /?cmd=getbundle HTTP/1.1" 200 - * (glob)
  * "GET /foo?cmd=capabilities HTTP/1.1" 200 - (glob)
  * "GET /foo?cmd=batch HTTP/1.1" 200 - * (glob)
  * "GET /foo?cmd=getbundle HTTP/1.1" 200 - * (glob)
  * "GET /foo/bar?cmd=capabilities HTTP/1.1" 200 - (glob)
  * "GET /foo/bar?cmd=batch HTTP/1.1" 200 - * (glob)
  * "GET /foo/bar?cmd=getbundle HTTP/1.1" 200 - * (glob)

  $ killdaemons.py
  $ rm hg1.pid error.log access.log
  $ cd repo
#endif

Enable progress extension for archive tests:

  $ cp $HGRCPATH $HGRCPATH.no-progress
  $ cat >> $HGRCPATH <<EOF
  > [progress]
  > disable=False
  > assume-tty = 1
  > delay = 0
  > # set changedelay really large so we don't see nested topics
  > changedelay = 30000
  > format = topic bar number
  > refresh = 0
  > width = 60
  > EOF

Test archiving to a directory tree (the doubled lines in the output
only show up in the test output, not in real usage):

  $ hg archive --subrepos ../archive
  \r (no-eol) (esc)
  archiving [                                           ] 0/3\r (no-eol) (esc)
  archiving [=============>                             ] 1/3\r (no-eol) (esc)
  archiving [===========================>               ] 2/3\r (no-eol) (esc)
  archiving [==========================================>] 3/3\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  archiving (foo) [                                     ] 0/3\r (no-eol) (esc)
  archiving (foo) [===========>                         ] 1/3\r (no-eol) (esc)
  archiving (foo) [=======================>             ] 2/3\r (no-eol) (esc)
  archiving (foo) [====================================>] 3/3\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  archiving (foo/bar) [                                 ] 0/1\r (no-eol) (glob) (esc)
  archiving (foo/bar) [================================>] 1/1\r (no-eol) (glob) (esc)
                                                              \r (no-eol) (esc)
  $ find ../archive | sort
  ../archive
  ../archive/.hg_archival.txt
  ../archive/.hgsub
  ../archive/.hgsubstate
  ../archive/foo
  ../archive/foo/.hgsub
  ../archive/foo/.hgsubstate
  ../archive/foo/bar
  ../archive/foo/bar/z.txt
  ../archive/foo/y.txt
  ../archive/x.txt

Test archiving to zip file (unzip output is unstable):

  $ hg archive --subrepos --prefix '.' ../archive.zip
  \r (no-eol) (esc)
  archiving [                                           ] 0/3\r (no-eol) (esc)
  archiving [=============>                             ] 1/3\r (no-eol) (esc)
  archiving [===========================>               ] 2/3\r (no-eol) (esc)
  archiving [==========================================>] 3/3\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  archiving (foo) [                                     ] 0/3\r (no-eol) (esc)
  archiving (foo) [===========>                         ] 1/3\r (no-eol) (esc)
  archiving (foo) [=======================>             ] 2/3\r (no-eol) (esc)
  archiving (foo) [====================================>] 3/3\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  archiving (foo/bar) [                                 ] 0/1\r (no-eol) (glob) (esc)
  archiving (foo/bar) [================================>] 1/1\r (no-eol) (glob) (esc)
                                                              \r (no-eol) (esc)

(unzip date formating is unstable, we do not care about it and glob it out)

  $ unzip -l ../archive.zip | grep -v -- ----- | egrep -v files$
  Archive:  ../archive.zip
    Length [ ]* Date [ ]* Time [ ]* Name (re)
        172  [0-9:\- ]*  .hg_archival.txt (re)
         10  [0-9:\- ]*  .hgsub (re)
         45  [0-9:\- ]*  .hgsubstate (re)
          3  [0-9:\- ]*  x.txt (re)
         10  [0-9:\- ]*  foo/.hgsub (re)
         45  [0-9:\- ]*  foo/.hgsubstate (re)
          9  [0-9:\- ]*  foo/y.txt (re)
          9  [0-9:\- ]*  foo/bar/z.txt (re)

Test archiving a revision that references a subrepo that is not yet
cloned:

#if hardlink
  $ hg clone -U . ../empty
  \r (no-eol) (esc)
  linking [ <=>                                           ] 1\r (no-eol) (esc)
  linking [  <=>                                          ] 2\r (no-eol) (esc)
  linking [   <=>                                         ] 3\r (no-eol) (esc)
  linking [    <=>                                        ] 4\r (no-eol) (esc)
  linking [     <=>                                       ] 5\r (no-eol) (esc)
  linking [      <=>                                      ] 6\r (no-eol) (esc)
  linking [       <=>                                     ] 7\r (no-eol) (esc)
  linking [        <=>                                    ] 8\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
#else
  $ hg clone -U . ../empty
  \r (no-eol) (esc)
  linking [ <=>                                           ] 1 (no-eol)
#endif

  $ cd ../empty
#if hardlink
  $ hg archive --subrepos -r tip --prefix './' ../archive.tar.gz
  \r (no-eol) (esc)
  archiving [                                           ] 0/3\r (no-eol) (esc)
  archiving [=============>                             ] 1/3\r (no-eol) (esc)
  archiving [===========================>               ] 2/3\r (no-eol) (esc)
  archiving [==========================================>] 3/3\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  linking [ <=>                                           ] 1\r (no-eol) (esc)
  linking [  <=>                                          ] 2\r (no-eol) (esc)
  linking [   <=>                                         ] 3\r (no-eol) (esc)
  linking [    <=>                                        ] 4\r (no-eol) (esc)
  linking [     <=>                                       ] 5\r (no-eol) (esc)
  linking [      <=>                                      ] 6\r (no-eol) (esc)
  linking [       <=>                                     ] 7\r (no-eol) (esc)
  linking [        <=>                                    ] 8\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  archiving (foo) [                                     ] 0/3\r (no-eol) (esc)
  archiving (foo) [===========>                         ] 1/3\r (no-eol) (esc)
  archiving (foo) [=======================>             ] 2/3\r (no-eol) (esc)
  archiving (foo) [====================================>] 3/3\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  linking [ <=>                                           ] 1\r (no-eol) (esc)
  linking [  <=>                                          ] 2\r (no-eol) (esc)
  linking [   <=>                                         ] 3\r (no-eol) (esc)
  linking [    <=>                                        ] 4\r (no-eol) (esc)
  linking [     <=>                                       ] 5\r (no-eol) (esc)
  linking [      <=>                                      ] 6\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  archiving (foo/bar) [                                 ] 0/1\r (no-eol) (glob) (esc)
  archiving (foo/bar) [================================>] 1/1\r (no-eol) (glob) (esc)
                                                              \r (no-eol) (esc)
  cloning subrepo foo from $TESTTMP/repo/foo
  cloning subrepo foo/bar from $TESTTMP/repo/foo/bar (glob)
#else
Note there's a slight output glitch on non-hardlink systems: the last
"linking" progress topic never gets closed, leading to slight output corruption on that platform.
  $ hg archive --subrepos -r tip --prefix './' ../archive.tar.gz
  \r (no-eol) (esc)
  archiving [                                           ] 0/3\r (no-eol) (esc)
  archiving [=============>                             ] 1/3\r (no-eol) (esc)
  archiving [===========================>               ] 2/3\r (no-eol) (esc)
  archiving [==========================================>] 3/3\r (no-eol) (esc)
                                                              \r (no-eol) (esc)
  \r (no-eol) (esc)
  linking [ <=>                                           ] 1\r (no-eol) (esc)
  cloning subrepo foo/bar from $TESTTMP/repo/foo/bar (glob)
#endif

Archive + subrepos uses '/' for all component separators

  $ tar -tzf ../archive.tar.gz | sort
  .hg_archival.txt
  .hgsub
  .hgsubstate
  foo/.hgsub
  foo/.hgsubstate
  foo/bar/z.txt
  foo/y.txt
  x.txt

The newly cloned subrepos contain no working copy:

  $ hg -R foo summary
  parent: -1:000000000000  (no revision checked out)
  branch: default
  commit: (clean)
  update: 4 new changesets (update)

Disable progress extension and cleanup:

  $ mv $HGRCPATH.no-progress $HGRCPATH

Test archiving when there is a directory in the way for a subrepo
created by archive:

  $ hg clone -U . ../almost-empty
  $ cd ../almost-empty
  $ mkdir foo
  $ echo f > foo/f
  $ hg archive --subrepos -r tip archive
  cloning subrepo foo from $TESTTMP/empty/foo
  abort: destination '$TESTTMP/almost-empty/foo' is not empty (in subrepo foo) (glob)
  [255]

Clone and test outgoing:

  $ cd ..
  $ hg clone repo repo2
  updating to branch default
  cloning subrepo foo from $TESTTMP/repo/foo
  cloning subrepo foo/bar from $TESTTMP/repo/foo/bar (glob)
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo2
  $ hg outgoing -S
  comparing with $TESTTMP/repo (glob)
  searching for changes
  no changes found
  comparing with $TESTTMP/repo/foo
  searching for changes
  no changes found
  comparing with $TESTTMP/repo/foo/bar
  searching for changes
  no changes found
  [1]

Make nested change:

  $ echo y4 >> foo/y.txt
  $ hg diff --nodates -S
  diff -r 65903cebad86 foo/y.txt
  --- a/foo/y.txt
  +++ b/foo/y.txt
  @@ -1,3 +1,4 @@
   y1
   y2
   y3
  +y4
  $ hg commit --subrepos -m 3-4-2
  committing subrepository foo
  $ hg outgoing -S
  comparing with $TESTTMP/repo (glob)
  searching for changes
  changeset:   3:2655b8ecc4ee
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     3-4-2
  
  comparing with $TESTTMP/repo/foo
  searching for changes
  changeset:   4:e96193d6cb36
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     3-4-2
  
  comparing with $TESTTMP/repo/foo/bar
  searching for changes
  no changes found


Switch to original repo and setup default path:

  $ cd ../repo
  $ echo '[paths]' >> .hg/hgrc
  $ echo 'default = ../repo2' >> .hg/hgrc

Test incoming:

  $ hg incoming -S
  comparing with $TESTTMP/repo2 (glob)
  searching for changes
  changeset:   3:2655b8ecc4ee
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     3-4-2
  
  comparing with $TESTTMP/repo2/foo
  searching for changes
  changeset:   4:e96193d6cb36
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     3-4-2
  
  comparing with $TESTTMP/repo2/foo/bar
  searching for changes
  no changes found

  $ hg incoming -S --bundle incoming.hg
  abort: cannot combine --bundle and --subrepos
  [255]

Test missing subrepo:

  $ rm -r foo
  $ hg status -S
  warning: error "unknown revision '65903cebad86f1a84bd4f1134f62fa7dcb7a1c98'" in subrepository "foo"

Issue2619: IndexError: list index out of range on hg add with subrepos
The subrepo must sorts after the explicit filename.

  $ cd ..
  $ hg init test
  $ cd test
  $ hg init x
  $ echo abc > abc.txt
  $ hg ci -Am "abc"
  adding abc.txt
  $ echo "x = x" >> .hgsub
  $ hg add .hgsub
  $ touch a x/a
  $ hg add a x/a

  $ hg ci -Sm "added x"
  committing subrepository x
  $ echo abc > x/a
  $ hg revert --rev '.^' "set:subrepo('glob:x*')"
  abort: subrepository 'x' does not exist in 25ac2c9b3180!
  [255]

  $ cd ..