remotefilelog: import pruned-down remotefilelog extension from hg-experimental
This is remotefilelog as of my recent patches for compatibility with
current tip of hg, minus support for old versions of Mercurial and
some FB-specific features like their treemanifest extension and
fetching linkrev data from a patched phabricator. The file extutil.py
moved from hgext3rd to remotefilelog.
This is not yet ready to be landed, consider it a preview for
now. Planned changes include:
* replace lz4 with zstd
* rename some capabilities, requirements and wireproto commands to mark
them as experimental
* consolidate bits of shallowutil with related functions (eg readfile)
I'm certainly open to other (small) changes, but my rough mission is
to land this largely as-is so we can use it as a model of the
functionality we need going forward for lazy-fetching of file contents
from a server.
# no-check-commit because of a few foo_bar functions
Differential Revision: https://phab.mercurial-scm.org/D4782
$ PYTHONPATH=$TESTDIR/..:$PYTHONPATH
$ export PYTHONPATH
$ . "$TESTDIR/remotefilelog-library.sh"
$ hginit master
$ cd master
$ cat >> .hg/hgrc <<EOF
> [remotefilelog]
> server=True
> EOF
$ echo x > x
$ hg commit -qAm x
$ mkdir dir
$ echo y > dir/y
$ hg commit -qAm y
$ cd ..
Shallow clone from full
$ hgcloneshallow ssh://user@dummy/master shallow --noupdate
streaming all changes
2 files to transfer, 473 bytes of data
transferred 473 bytes in * seconds (*/sec) (glob)
searching for changes
no changes found
$ cd shallow
$ cat .hg/requires
dotencode
fncache
generaldelta
remotefilelog
revlogv1
store
$ hg update
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)
Log on a file without -f
$ hg log dir/y
warning: file log can be slow on large repos - use -f to speed it up
changeset: 1:2e73264fab97
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: y
Log on a file with -f
$ hg log -f dir/y
changeset: 1:2e73264fab97
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: y
Log on a file with kind in path
$ hg log -r "filelog('path:dir/y')"
changeset: 1:2e73264fab97
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: y
Log on multiple files with -f
$ hg log -f dir/y x
changeset: 1:2e73264fab97
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: y
changeset: 0:b292c1e3311f
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: x
Log on a directory
$ hg log dir
changeset: 1:2e73264fab97
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: y
Log on a file from inside a directory
$ cd dir
$ hg log y
warning: file log can be slow on large repos - use -f to speed it up
changeset: 1:2e73264fab97
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: y
Log on a file via -fr
$ cd ..
$ hg log -fr tip dir/ --template '{rev}\n'
1
Trace renames
$ hg mv x z
$ hg commit -m move
$ hg log -f z -T '{desc}\n' -G
@ move
:
o x
Verify remotefilelog handles rename metadata stripping when comparing file sizes
$ hg debugrebuilddirstate
$ hg status