view tests/test-logexchange.t @ 42406:f385ba70e4af

changelog: optionally store added and removed files in changeset extras

As mentioned in an earlier patch, copies._chain() is used a lot in the
changeset-centric version of pathcopies(). It is expensive because it
needs to look at the manifest in order to filter out copies whose
target file has since been removed. I want to store the sets of added
and removed files in the changeset in order to speed that up. This
patch does the writing part of that. It could easily be a separate
config, but it's currently tied to experimental.copies.write-to since
that's the only real use case (it will also make the {file_*} template
keywords faster, but I doubt that anyone cares enough about those to
write extra metadata for them).

The new information is stored in the changeset extras. Since they're
always subsets of the changeset's "files" list, they're stored as
indexes into that list. I've stored the indexes as stringified ints
separated by NUL bytes. The size of 00changelog.d for the hg repo
increased in size by 0.28% percent (compared to the size with only
copy information in the changesets, which in turn is 0.17% larger than
without copy information). We could store only the delta between the
indexes and we could store them in binary, but the chosen format is
more readable.

We could also have implemented this as a cache outside the
changelog. One advantage of doing it that way is that we would get the
speedups from the {file_*} template keywords also on old
repos. Another advantage is that it we can rewrite the cache if we
find a bug in how we calculate the set of files. A disadvantage is
that it would be more complex. Another is that it would surely use
more space. We already write the copy information to the changeset
extras, so it seems like a small step to also write these file sets.

Differential Revision: https://phab.mercurial-scm.org/D6416

Testing the functionality to pull remotenames
=============================================

  $ cat >> $HGRCPATH << EOF
  > [ui]
  > ssh = "$PYTHON" "$TESTDIR/dummyssh"
  > [alias]
  > glog = log -G -T '{rev}:{node|short}  {desc}'
  > [extensions]
  > remotenames =
  > show =
  > EOF

Making a server repo
--------------------

  $ hg init server
  $ cd server
  $ for ch in a b c d e f g h; do
  >   echo "foo" >> $ch
  >   hg ci -Aqm "Added "$ch
  > done
  $ hg glog
  @  7:ec2426147f0e  Added h
  |
  o  6:87d6d6676308  Added g
  |
  o  5:825660c69f0c  Added f
  |
  o  4:aa98ab95a928  Added e
  |
  o  3:62615734edd5  Added d
  |
  o  2:28ad74487de9  Added c
  |
  o  1:29becc82797a  Added b
  |
  o  0:18d04c59bb5d  Added a
  
  $ hg bookmark -r 3 foo
  $ hg bookmark -r 6 bar
  $ hg up 4
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ hg branch wat
  marked working directory as branch wat
  (branches are permanent and global, did you want a bookmark?)
  $ echo foo >> bar
  $ hg ci -Aqm "added bar"

Making a client repo
--------------------

  $ cd ..

  $ hg clone ssh://user@dummy/server client
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 9 changesets with 9 changes to 9 files (+1 heads)
  new changesets 18d04c59bb5d:3e1487808078
  updating to branch default
  8 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cd client
  $ cat .hg/logexchange/bookmarks
  0
  
  87d6d66763085b629e6d7ed56778c79827273022\x00default\x00bar (esc)
  62615734edd52f06b6fb9c2beb429e4fe30d57b8\x00default\x00foo (esc)

  $ cat .hg/logexchange/branches
  0
  
  ec2426147f0e39dbc9cef599b066be6035ce691d\x00default\x00default (esc)
  3e1487808078543b0af6d10dadf5d46943578db0\x00default\x00wat (esc)

  $ hg show work
  o  3e14 (wat) (default/wat) added bar
  ~
  @  ec24 (default/default) Added h
  ~

  $ hg update "default/wat"
  1 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ hg identify
  3e1487808078 (wat) tip

Making a new server
-------------------

  $ cd ..
  $ hg init server2
  $ cd server2
  $ hg pull ../server/
  pulling from ../server/
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 9 changesets with 9 changes to 9 files (+1 heads)
  adding remote bookmark bar
  adding remote bookmark foo
  new changesets 18d04c59bb5d:3e1487808078
  (run 'hg heads' to see heads)

Pulling form the new server
---------------------------
  $ cd ../client/
  $ hg pull ../server2/
  pulling from ../server2/
  searching for changes
  no changes found
  $ cat .hg/logexchange/bookmarks
  0
  
  62615734edd52f06b6fb9c2beb429e4fe30d57b8\x00default\x00foo (esc)
  87d6d66763085b629e6d7ed56778c79827273022\x00default\x00bar (esc)
  87d6d66763085b629e6d7ed56778c79827273022\x00$TESTTMP/server2\x00bar (esc)
  62615734edd52f06b6fb9c2beb429e4fe30d57b8\x00$TESTTMP/server2\x00foo (esc)

  $ cat .hg/logexchange/branches
  0
  
  3e1487808078543b0af6d10dadf5d46943578db0\x00default\x00wat (esc)
  ec2426147f0e39dbc9cef599b066be6035ce691d\x00default\x00default (esc)
  ec2426147f0e39dbc9cef599b066be6035ce691d\x00$TESTTMP/server2\x00default (esc)
  3e1487808078543b0af6d10dadf5d46943578db0\x00$TESTTMP/server2\x00wat (esc)

  $ hg log -G
  @  changeset:   8:3e1487808078
  |  branch:      wat
  |  tag:         tip
  |  remote branch:  $TESTTMP/server2/wat
  |  remote branch:  default/wat
  |  parent:      4:aa98ab95a928
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     added bar
  |
  | o  changeset:   7:ec2426147f0e
  | |  remote branch:  $TESTTMP/server2/default
  | |  remote branch:  default/default
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     Added h
  | |
  | o  changeset:   6:87d6d6676308
  | |  bookmark:    bar
  | |  remote bookmark:  $TESTTMP/server2/bar
  | |  remote bookmark:  default/bar
  | |  hoisted name:  bar
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     Added g
  | |
  | o  changeset:   5:825660c69f0c
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     Added f
  |
  o  changeset:   4:aa98ab95a928
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Added e
  |
  o  changeset:   3:62615734edd5
  |  bookmark:    foo
  |  remote bookmark:  $TESTTMP/server2/foo
  |  remote bookmark:  default/foo
  |  hoisted name:  foo
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Added d
  |
  o  changeset:   2:28ad74487de9
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Added c
  |
  o  changeset:   1:29becc82797a
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Added b
  |
  o  changeset:   0:18d04c59bb5d
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     Added a
  
Testing the templates provided by remotenames extension

`remotenames` keyword

  $ hg log -G -T "{rev}:{node|short} {remotenames}\n"
  @  8:3e1487808078 $TESTTMP/server2/wat default/wat
  |
  | o  7:ec2426147f0e $TESTTMP/server2/default default/default
  | |
  | o  6:87d6d6676308 $TESTTMP/server2/bar default/bar
  | |
  | o  5:825660c69f0c
  |/
  o  4:aa98ab95a928
  |
  o  3:62615734edd5 $TESTTMP/server2/foo default/foo
  |
  o  2:28ad74487de9
  |
  o  1:29becc82797a
  |
  o  0:18d04c59bb5d
  
`remotebookmarks` and `remotebranches` keywords

  $ hg log -G -T "{rev}:{node|short} [{remotebookmarks}] ({remotebranches})"
  @  8:3e1487808078 [] ($TESTTMP/server2/wat default/wat)
  |
  | o  7:ec2426147f0e [] ($TESTTMP/server2/default default/default)
  | |
  | o  6:87d6d6676308 [$TESTTMP/server2/bar default/bar] ()
  | |
  | o  5:825660c69f0c [] ()
  |/
  o  4:aa98ab95a928 [] ()
  |
  o  3:62615734edd5 [$TESTTMP/server2/foo default/foo] ()
  |
  o  2:28ad74487de9 [] ()
  |
  o  1:29becc82797a [] ()
  |
  o  0:18d04c59bb5d [] ()
  
The `hoistednames` template keyword

  $ hg log -GT "{rev}:{node|short} ({hoistednames})"
  @  8:3e1487808078 ()
  |
  | o  7:ec2426147f0e ()
  | |
  | o  6:87d6d6676308 (bar)
  | |
  | o  5:825660c69f0c ()
  |/
  o  4:aa98ab95a928 ()
  |
  o  3:62615734edd5 (foo)
  |
  o  2:28ad74487de9 ()
  |
  o  1:29becc82797a ()
  |
  o  0:18d04c59bb5d ()
  

Testing the revsets provided by remotenames extension

`remotenames` revset

  $ hg log -r "remotenames()" -GT "{rev}:{node|short} {remotenames}\n"
  @  8:3e1487808078 $TESTTMP/server2/wat default/wat
  :
  : o  7:ec2426147f0e $TESTTMP/server2/default default/default
  : |
  : o  6:87d6d6676308 $TESTTMP/server2/bar default/bar
  :/
  o  3:62615734edd5 $TESTTMP/server2/foo default/foo
  |
  ~

`remotebranches` revset

  $ hg log -r "remotebranches()" -GT "{rev}:{node|short} {remotenames}\n"
  @  8:3e1487808078 $TESTTMP/server2/wat default/wat
  |
  ~
  o  7:ec2426147f0e $TESTTMP/server2/default default/default
  |
  ~

`remotebookmarks` revset

  $ hg log -r "remotebookmarks()" -GT "{rev}:{node|short} {remotenames}\n"
  o  6:87d6d6676308 $TESTTMP/server2/bar default/bar
  :
  o  3:62615734edd5 $TESTTMP/server2/foo default/foo
  |
  ~

Updating to revision using hoisted name
---------------------------------------

Deleting local bookmark to make sure we update to hoisted name only

  $ hg bookmark -d bar

  $ hg up bar
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg log -r .
  changeset:   6:87d6d6676308
  remote bookmark:  $TESTTMP/server2/bar
  remote bookmark:  default/bar
  hoisted name:  bar
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     Added g
  
When both local bookmark and hoisted name exists but on different revs

  $ hg up 8
  1 files updated, 0 files merged, 2 files removed, 0 files unresolved

  $ hg bookmark foo
  moving bookmark 'foo' forward from 62615734edd5

Local bookmark should take precedence over hoisted name

  $ hg up foo
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg log -r .
  changeset:   8:3e1487808078
  branch:      wat
  bookmark:    foo
  tag:         tip
  remote branch:  $TESTTMP/server2/wat
  remote branch:  default/wat
  parent:      4:aa98ab95a928
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     added bar
  
  $ hg bookmarks
     $TESTTMP/server2/bar 6:87d6d6676308
     $TESTTMP/server2/foo 3:62615734edd5
     default/bar               6:87d6d6676308
     default/foo               3:62615734edd5
   * foo                       8:3e1487808078

Testing the remotenames sychronization during `hg push`
-------------------------------------------------------

  $ cd ../server/
  $ hg bookmark foo
  moving bookmark 'foo' forward from 62615734edd5

After the push, default/foo should move to rev 8
  $ cd ../client/
  $ hg push
  pushing to ssh://user@dummy/server
  searching for changes
  no changes found
  [1]
  $ hg log -Gr 'remotenames()'
  @  changeset:   8:3e1487808078
  :  branch:      wat
  :  bookmark:    foo
  :  tag:         tip
  :  remote bookmark:  default/foo
  :  hoisted name:  foo
  :  remote branch:  $TESTTMP/server2/wat
  :  remote branch:  default/wat
  :  parent:      4:aa98ab95a928
  :  user:        test
  :  date:        Thu Jan 01 00:00:00 1970 +0000
  :  summary:     added bar
  :
  : o  changeset:   7:ec2426147f0e
  : |  remote branch:  $TESTTMP/server2/default
  : |  remote branch:  default/default
  : |  user:        test
  : |  date:        Thu Jan 01 00:00:00 1970 +0000
  : |  summary:     Added h
  : |
  : o  changeset:   6:87d6d6676308
  :/   remote bookmark:  $TESTTMP/server2/bar
  :    remote bookmark:  default/bar
  :    hoisted name:  bar
  :    user:        test
  :    date:        Thu Jan 01 00:00:00 1970 +0000
  :    summary:     Added g
  :
  o  changeset:   3:62615734edd5
  |  remote bookmark:  $TESTTMP/server2/foo
  ~  user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     Added d
  
  $ hg bookmarks
     $TESTTMP/server2/bar 6:87d6d6676308
     $TESTTMP/server2/foo 3:62615734edd5
     default/bar               6:87d6d6676308
     default/foo               8:3e1487808078
   * foo                       8:3e1487808078

Testing the names argument to remotenames, remotebranches and remotebookmarks revsets
--------------------------------------------------------------------------------------

  $ cd ..
  $ hg clone ssh://user@dummy/server client2
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 9 changesets with 9 changes to 9 files (+1 heads)
  new changesets 18d04c59bb5d:3e1487808078
  updating to branch default
  8 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd server2
  $ hg up wat
  6 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo foo > watwat
  $ hg ci -Aqm "added watwat"
  $ hg bookmark bar
  abort: bookmark 'bar' already exists (use -f to force)
  [255]
  $ hg up ec24
  3 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo i > i
  $ hg ci -Aqm "added i"

  $ cd ../client2
  $ echo "[paths]" >> .hg/hgrc
  $ echo "server2 = $TESTTMP/server2" >> .hg/hgrc
  $ hg pull server2
  pulling from $TESTTMP/server2
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files
  new changesets f34adec73c21:bf433e48adea
  (run 'hg update' to get a working copy)

  $ hg log -Gr 'remotenames()' -T '{rev}:{node|short} {desc}\n({remotebranches})  [{remotebookmarks}]\n\n'
  o  10:bf433e48adea added i
  |  (server2/default)  []
  |
  | o  9:f34adec73c21 added watwat
  | |  (server2/wat)  []
  | |
  | o  8:3e1487808078 added bar
  | :  (default/wat)  [default/foo]
  | :
  @ :  7:ec2426147f0e Added h
  | :  (default/default)  []
  | :
  o :  6:87d6d6676308 Added g
  :/   ()  [default/bar server2/bar]
  :
  o  3:62615734edd5 Added d
  |  ()  [server2/foo]
  ~

Testing for a single remote name which exists

  $ hg log -r 'remotebranches("default/wat")' -GT "{rev}:{node|short} {remotebranches}\n"
  o  8:3e1487808078 default/wat
  |
  ~

  $ hg log -r 'remotebookmarks("server2/foo")' -GT "{rev}:{node|short} {remotebookmarks}\n"
  o  3:62615734edd5 server2/foo
  |
  ~

  $ hg log -r 'remotenames("re:default")' -GT "{rev}:{node|short} {remotenames}\n"
  o  10:bf433e48adea server2/default
  |
  | o  8:3e1487808078 default/foo default/wat
  | |
  | ~
  @  7:ec2426147f0e default/default
  |
  o  6:87d6d6676308 default/bar server2/bar
  |
  ~

Testing for a literal name which does not exists, which should fail.

  $ hg log -r 'remotebranches(def)' -GT "{rev}:{node|short} {remotenames}\n"
  abort: remote name 'def' does not exist!
  [255]

  $ hg log -r 'remotebookmarks("server3")' -GT "{rev}:{node|short} {remotenames}\n"
  abort: remote name 'server3' does not exist!
  [255]

  $ hg log -r 'remotenames("server3")' -GT "{rev}:{node|short} {remotenames}\n"
  abort: remote name 'server3' does not exist!
  [255]

Testing for a pattern which does not match anything, which shouldn't fail.

  $ hg log -r 'remotenames("re:^server3$")'

Testing for multiple names, which is not supported.

  $ hg log -r 'remotenames("re:default", "re:server2")' -GT "{rev}:{node|short} {remotenames}\n"
  hg: parse error: only one argument accepted
  [255]

  $ hg log -r 'remotebranches("default/wat", "server2/wat")' -GT "{rev}:{node|short} {remotebranches}\n"
  hg: parse error: only one argument accepted
  [255]

  $ hg log -r 'remotebookmarks("default/foo", "server2/foo")' -GT "{rev}:{node|short} {remotebookmarks}\n"
  hg: parse error: only one argument accepted
  [255]

Testing pattern matching

  $ hg log -r 'remotenames("re:def")' -GT "{rev}:{node|short} {remotenames}\n"
  o  10:bf433e48adea server2/default
  |
  | o  8:3e1487808078 default/foo default/wat
  | |
  | ~
  @  7:ec2426147f0e default/default
  |
  o  6:87d6d6676308 default/bar server2/bar
  |
  ~

  $ hg log -r 'remotebranches("re:ser.*2")' -GT "{rev}:{node|short} {remotebranches}\n"
  o  10:bf433e48adea server2/default
  |
  ~
  o  9:f34adec73c21 server2/wat
  |
  ~