mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 16:57:49 +03:00
5322d7b6fe
Summary:
When a machine is newly set up, it needs to have the git mapfile available. Generating it from scratch is prohibitively slow for large repos like `configerator`, so instead add a command that can download the entire git metadata from a server that has it.
This is a temporary hack while I work on a real fix to upstream to hg-git. A real fix would be
- part of hg-git
- not send the entire git metadata over, just the bits that are needed based on a common/heads computation
- be dependent on bundle2
- (probably) be part of the pull operation, not a separate command
- be configurable with an option
This isn't part of hg-git, even in a private branch, to emphasize its temporary nature. `gitlookup` might also not be the best fit, but I want to avoid adding yet another extension for a temporary hack.
Test Plan:
Ran the following commands. Note that the current version of `hg` deployed to devservers is broken, so we need to deploy an updated hg before enabling this. These commands were tested against 1ced7c762592
(in `fbandroid-hg`, with `gitlookup` enabled on both ends and the remotefilelog fix in D1341059)
hg gitgetmeta ../fbandroid-from-git
Saw that 3 files were written out.
hg gitgetmeta ssh://localhost//data/users/sid0/fbandroid-from-git
Saw that 3 files were written out.
Reviewers: dschleimer, davidsp, akushner, durham, pyd
Reviewed By: pyd
Differential Revision: https://phabricator.fb.com/D1341166
Tasks: 3751836
41 lines
1.4 KiB
Perl
41 lines
1.4 KiB
Perl
$ echo "[extensions]" >> $HGRCPATH
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$ echo "gitlookup = $TESTDIR/../gitlookup.py" >> $HGRCPATH
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Set up the hg-git files
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$ hg init repo1
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$ cd repo1/.hg
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$ echo '0000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffff' > git-mapfile
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$ echo '0000000000000000000000000000000000000000 default/master' > git-remote-refs
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$ echo '0000000000000000000000000000000000000000 0.1' > git-tags
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$ cd ../..
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$ hg clone repo1 repo2 -q
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$ cd repo2
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$ hg gitgetmeta -v
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getting git metadata from $TESTTMP/repo1
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writing .hg/git-mapfile
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writing .hg/git-remote-refs
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writing .hg/git-tags
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wrote 3 files (183 bytes)
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$ cat .hg/git-mapfile
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0000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffff
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$ cat .hg/git-remote-refs
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0000000000000000000000000000000000000000 default/master
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$ cat .hg/git-tags
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0000000000000000000000000000000000000000 0.1
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Change a file upstream and see that it gets reflected her
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$ echo '1111111111111111111111111111111111111111 eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee' >> ../repo1/.hg/git-mapfile
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$ hg gitgetmeta -v
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getting git metadata from $TESTTMP/repo1
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writing .hg/git-mapfile
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writing .hg/git-remote-refs
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writing .hg/git-tags
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wrote 3 files (265 bytes)
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$ cat .hg/git-mapfile
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0000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffff
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1111111111111111111111111111111111111111 eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
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