view tests/test-init.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

This test tries to exercise the ssh functionality with a dummy script

  $ checknewrepo()
  > {
  >    name=$1
  >    if [ -d "$name"/.hg/store ]; then
  >    echo store created
  >    fi
  >    if [ -f "$name"/.hg/00changelog.i ]; then
  >    echo 00changelog.i created
  >    fi
  >    cat "$name"/.hg/requires
  > }

creating 'local'

  $ hg init local
  $ checknewrepo local
  store created
  00changelog.i created
  dotencode
  fncache
  generaldelta
  revlogv1
  sparserevlog
  store
  testonly-simplestore (reposimplestore !)
  $ echo this > local/foo
  $ hg ci --cwd local -A -m "init"
  adding foo

test custom revlog chunk cache sizes

  $ hg --config format.chunkcachesize=0 log -R local -pv
  abort: revlog chunk cache size 0 is not greater than 0!
  [255]
  $ hg --config format.chunkcachesize=1023 log -R local -pv
  abort: revlog chunk cache size 1023 is not a power of 2!
  [255]
  $ hg --config format.chunkcachesize=1024 log -R local -pv
  changeset:   0:08b9e9f63b32
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files:       foo
  description:
  init
  
  
  diff -r 000000000000 -r 08b9e9f63b32 foo
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/foo	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +this
  

creating repo with format.usestore=false

  $ hg --config format.usestore=false init old
  $ checknewrepo old
  generaldelta
  revlogv1
  testonly-simplestore (reposimplestore !)
  sparserevlog

creating repo with format.usefncache=false

  $ hg --config format.usefncache=false init old2
  $ checknewrepo old2
  store created
  00changelog.i created
  generaldelta
  revlogv1
  sparserevlog
  store
  testonly-simplestore (reposimplestore !)

creating repo with format.dotencode=false

  $ hg --config format.dotencode=false init old3
  $ checknewrepo old3
  store created
  00changelog.i created
  fncache
  generaldelta
  revlogv1
  sparserevlog
  store
  testonly-simplestore (reposimplestore !)

creating repo with format.dotencode=false

  $ hg --config format.generaldelta=false --config format.usegeneraldelta=false --config format.sparse-revlog=no init old4
  $ checknewrepo old4
  store created
  00changelog.i created
  dotencode
  fncache
  revlogv1
  store
  testonly-simplestore (reposimplestore !)

test failure

  $ hg init local
  abort: repository local already exists!
  [255]

init+push to remote2

  $ hg init -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" ssh://user@dummy/remote2
  $ hg incoming -R remote2 local
  comparing with local
  changeset:   0:08b9e9f63b32
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     init
  

  $ hg push -R local -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" ssh://user@dummy/remote2
  pushing to ssh://user@dummy/remote2
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files

clone to remote1

  $ hg clone -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" local ssh://user@dummy/remote1
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files

The largefiles extension doesn't crash
  $ hg clone -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" local ssh://user@dummy/remotelf --config extensions.largefiles=
  The fsmonitor extension is incompatible with the largefiles extension and has been disabled. (fsmonitor !)
  The fsmonitor extension is incompatible with the largefiles extension and has been disabled. (fsmonitor !)
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files

init to existing repo

  $ hg init -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" ssh://user@dummy/remote1
  abort: repository remote1 already exists!
  abort: could not create remote repo!
  [255]

clone to existing repo

  $ hg clone -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" local ssh://user@dummy/remote1
  abort: repository remote1 already exists!
  abort: could not create remote repo!
  [255]

output of dummyssh

  $ cat dummylog
  Got arguments 1:user@dummy 2:hg init remote2
  Got arguments 1:user@dummy 2:hg -R remote2 serve --stdio
  Got arguments 1:user@dummy 2:hg -R remote2 serve --stdio
  Got arguments 1:user@dummy 2:hg init remote1
  Got arguments 1:user@dummy 2:hg -R remote1 serve --stdio
  Got arguments 1:user@dummy 2:hg init remotelf
  Got arguments 1:user@dummy 2:hg -R remotelf serve --stdio
  Got arguments 1:user@dummy 2:hg init remote1
  Got arguments 1:user@dummy 2:hg init remote1

comparing repositories

  $ hg tip -q -R local
  0:08b9e9f63b32
  $ hg tip -q -R remote1
  0:08b9e9f63b32
  $ hg tip -q -R remote2
  0:08b9e9f63b32

check names for repositories (clashes with URL schemes, special chars)

  $ for i in bundle file hg http https old-http ssh static-http "with space"; do
  >   printf "hg init \"$i\"... "
  >   hg init "$i"
  >   test -d "$i" -a -d "$i/.hg" && echo "ok" || echo "failed"
  > done
  hg init "bundle"... ok
  hg init "file"... ok
  hg init "hg"... ok
  hg init "http"... ok
  hg init "https"... ok
  hg init "old-http"... ok
  hg init "ssh"... ok
  hg init "static-http"... ok
  hg init "with space"... ok
#if eol-in-paths
/* " " is not a valid name for a directory on Windows */
  $ hg init " "
  $ test -d " "
  $ test -d " /.hg"
#endif

creating 'local/sub/repo'

  $ hg init local/sub/repo
  $ checknewrepo local/sub/repo
  store created
  00changelog.i created
  dotencode
  fncache
  generaldelta
  revlogv1
  sparserevlog
  store
  testonly-simplestore (reposimplestore !)

prepare test of init of url configured from paths

  $ echo '[paths]' >> $HGRCPATH
  $ echo "somewhere = `pwd`/url from paths" >> $HGRCPATH
  $ echo "elsewhere = `pwd`/another paths url" >> $HGRCPATH

init should (for consistency with clone) expand the url

  $ hg init somewhere
  $ checknewrepo "url from paths"
  store created
  00changelog.i created
  dotencode
  fncache
  generaldelta
  revlogv1
  sparserevlog
  store
  testonly-simplestore (reposimplestore !)

verify that clone also expand urls

  $ hg clone somewhere elsewhere
  updating to branch default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ checknewrepo "another paths url"
  store created
  00changelog.i created
  dotencode
  fncache
  generaldelta
  revlogv1
  sparserevlog
  store
  testonly-simplestore (reposimplestore !)

clone bookmarks

  $ hg -R local bookmark test
  $ hg -R local bookmarks
   * test                      0:08b9e9f63b32
  $ hg clone -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" local ssh://user@dummy/remote-bookmarks
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files
  exporting bookmark test
  $ hg -R remote-bookmarks bookmarks
     test                      0:08b9e9f63b32

Check format constraint
-----------------------

  $ hg init issue6056 --config format.usegeneraldelta=0 --config format.sparse-revlog=0
  $ cd issue6056
  $ echo foo > 1
  $ echo foo > 2
  $ echo foo > 3
  $ echo foo > 4
  $ echo foo > 5
  $ hg add *

Build a bogus repository (sparserevlog without general delta)

  $ hg commit -m 'initial changesets'
  $ echo 'sparserevlog' >> .hg/requires
  $ for x in `$TESTDIR/seq.py 100`; do
  >     echo $x >> `expr $x % 5 + 1`
  >     hg commit -m $x
  > done
  $ cd ..