Mercurial > hg
view tests/test-treemanifest.t @ 26755:bb0b955d050d
streamclone: support for producing and consuming stream clone bundles
Up to this point, stream clones only existed as a dynamically generated
data format produced and consumed during streaming clones. In order to
support this efficient cloning format with the clone bundles feature, we
need a more formal, on disk representation of the streaming clone data.
This patch introduces a new "bundle" type for streaming clones. Unlike
existing bundles, it does not contain changegroup data. It does,
however, share the same concepts like the 4 byte header which identifies
the type of data that follows and the 2 byte abbreviation for
compression types (of which only "UN" is currently supported).
The new bundle format is essentially the existing stream clone version 1
data format with some headers at the beginning.
Content negotiation at stream clone request time checked for repository
format/requirements compatibility before initiating a stream clone. We
can't do active content negotiation when using clone bundles. So, we put
this set of requirements inside the payload so consumers have a built-in
mechanism for checking compatibility before reading and applying lots of
data. Of course, we will also advertise this requirements set in clone
bundles. But that's for another patch.
We currently don't have a mechanism to produce and consume this new
bundle format. This will be implemented in upcoming patches.
It's worth noting that if a legacy client attempts to `hg unbundle` a
stream clone bundle (with the "HGS1" header), it will abort with:
"unknown bundle version S1," which seems appropriate.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sat, 17 Oct 2015 11:14:52 -0700 |
parents | 633d07045494 |
children | 4d1a96bb831f |
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Set up repo $ hg --config experimental.treemanifest=True init repo $ cd repo Requirements get set on init $ grep treemanifest .hg/requires treemanifest Without directories, looks like any other repo $ echo 0 > a $ echo 0 > b $ hg ci -Aqm initial $ hg debugdata -m 0 a\x00362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (esc) b\x00362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (esc) Submanifest is stored in separate revlog $ mkdir dir1 $ echo 1 > dir1/a $ echo 1 > dir1/b $ echo 1 > e $ hg ci -Aqm 'add dir1' $ hg debugdata -m 1 a\x00362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (esc) b\x00362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (esc) dir1\x008b3ffd73f901e83304c83d33132c8e774ceac44ed (esc) e\x00b8e02f6433738021a065f94175c7cd23db5f05be (esc) $ hg debugdata --dir dir1 0 a\x00b8e02f6433738021a065f94175c7cd23db5f05be (esc) b\x00b8e02f6433738021a065f94175c7cd23db5f05be (esc) Can add nested directories $ mkdir dir1/dir1 $ echo 2 > dir1/dir1/a $ echo 2 > dir1/dir1/b $ mkdir dir1/dir2 $ echo 2 > dir1/dir2/a $ echo 2 > dir1/dir2/b $ hg ci -Aqm 'add dir1/dir1' $ hg files -r . a b dir1/a (glob) dir1/b (glob) dir1/dir1/a (glob) dir1/dir1/b (glob) dir1/dir2/a (glob) dir1/dir2/b (glob) e Revision is not created for unchanged directory $ mkdir dir2 $ echo 3 > dir2/a $ hg add dir2 adding dir2/a (glob) $ hg debugindex --dir dir1 > before $ hg ci -qm 'add dir2' $ hg debugindex --dir dir1 > after $ diff before after $ rm before after Removing directory does not create an revlog entry $ hg rm dir1/dir1 removing dir1/dir1/a (glob) removing dir1/dir1/b (glob) $ hg debugindex --dir dir1/dir1 > before $ hg ci -qm 'remove dir1/dir1' $ hg debugindex --dir dir1/dir1 > after $ diff before after $ rm before after Check that hg files (calls treemanifest.walk()) works without loading all directory revlogs $ hg co 'desc("add dir2")' 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ mv .hg/store/meta/dir2 .hg/store/meta/dir2-backup $ hg files -r . dir1 dir1/a (glob) dir1/b (glob) dir1/dir1/a (glob) dir1/dir1/b (glob) dir1/dir2/a (glob) dir1/dir2/b (glob) Check that status between revisions works (calls treemanifest.matches()) without loading all directory revlogs $ hg status --rev 'desc("add dir1")' --rev . dir1 A dir1/dir1/a A dir1/dir1/b A dir1/dir2/a A dir1/dir2/b $ mv .hg/store/meta/dir2-backup .hg/store/meta/dir2 Merge creates 2-parent revision of directory revlog $ echo 5 > dir1/a $ hg ci -Aqm 'modify dir1/a' $ hg co '.^' 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo 6 > dir1/b $ hg ci -Aqm 'modify dir1/b' $ hg merge 'desc("modify dir1/a")' 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m 'conflict-free merge involving dir1/' $ cat dir1/a 5 $ cat dir1/b 6 $ hg debugindex --dir dir1 rev offset length base linkrev nodeid p1 p2 0 0 54 0 1 8b3ffd73f901 000000000000 000000000000 1 54 68 0 2 b66d046c644f 8b3ffd73f901 000000000000 2 122 12 0 4 b87265673c8a b66d046c644f 000000000000 3 134 95 0 5 aa5d3adcec72 b66d046c644f 000000000000 4 229 81 0 6 e29b066b91ad b66d046c644f 000000000000 5 310 107 5 7 a120ce2b83f5 e29b066b91ad aa5d3adcec72 Merge keeping directory from parent 1 does not create revlog entry. (Note that dir1's manifest does change, but only because dir1/a's filelog changes.) $ hg co 'desc("add dir2")' 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo 8 > dir2/a $ hg ci -m 'modify dir2/a' created new head $ hg debugindex --dir dir2 > before $ hg merge 'desc("modify dir1/a")' 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg revert -r 'desc("modify dir2/a")' . reverting dir1/a (glob) $ hg ci -m 'merge, keeping parent 1' $ hg debugindex --dir dir2 > after $ diff before after $ rm before after Merge keeping directory from parent 2 does not create revlog entry. (Note that dir2's manifest does change, but only because dir2/a's filelog changes.) $ hg co 'desc("modify dir2/a")' 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg debugindex --dir dir1 > before $ hg merge 'desc("modify dir1/a")' 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg revert -r 'desc("modify dir1/a")' . reverting dir2/a (glob) $ hg ci -m 'merge, keeping parent 2' created new head $ hg debugindex --dir dir1 > after $ diff before after $ rm before after Create flat source repo for tests with mixed flat/tree manifests $ cd .. $ hg init repo-flat $ cd repo-flat Create a few commits with flat manifest $ echo 0 > a $ echo 0 > b $ echo 0 > e $ for d in dir1 dir1/dir1 dir1/dir2 dir2 > do > mkdir $d > echo 0 > $d/a > echo 0 > $d/b > done $ hg ci -Aqm initial $ echo 1 > a $ echo 1 > dir1/a $ echo 1 > dir1/dir1/a $ hg ci -Aqm 'modify on branch 1' $ hg co 0 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo 2 > b $ echo 2 > dir1/b $ echo 2 > dir1/dir1/b $ hg ci -Aqm 'modify on branch 2' $ hg merge 1 3 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m 'merge of flat manifests to new flat manifest' Create clone with tree manifests enabled $ cd .. $ hg clone --pull --config experimental.treemanifest=1 repo-flat repo-mixed requesting all changes adding changesets adding manifests adding file changes added 4 changesets with 17 changes to 11 files updating to branch default 11 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd repo-mixed $ test -f .hg/store/meta [1] $ grep treemanifest .hg/requires treemanifest Commit should store revlog per directory $ hg co 1 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo 3 > a $ echo 3 > dir1/a $ echo 3 > dir1/dir1/a $ hg ci -m 'first tree' created new head $ find .hg/store/meta | sort .hg/store/meta .hg/store/meta/dir1 .hg/store/meta/dir1/00manifest.i .hg/store/meta/dir1/dir1 .hg/store/meta/dir1/dir1/00manifest.i .hg/store/meta/dir1/dir2 .hg/store/meta/dir1/dir2/00manifest.i .hg/store/meta/dir2 .hg/store/meta/dir2/00manifest.i Merge of two trees $ hg co 2 6 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge 1 3 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m 'merge of flat manifests to new tree manifest' created new head $ hg diff -r 3 Parent of tree root manifest should be flat manifest, and two for merge $ hg debugindex -m rev offset length base linkrev nodeid p1 p2 0 0 80 0 0 40536115ed9e 000000000000 000000000000 1 80 83 0 1 f3376063c255 40536115ed9e 000000000000 2 163 103 0 2 5d9b9da231a2 40536115ed9e 000000000000 3 266 83 0 3 d17d663cbd8a 5d9b9da231a2 f3376063c255 4 349 132 4 4 c05a51345f86 f3376063c255 000000000000 5 481 110 4 5 82594b1f557d 5d9b9da231a2 f3376063c255 Status across flat/tree boundary should work $ hg status --rev '.^' --rev . M a M dir1/a M dir1/dir1/a Turning off treemanifest config has no effect $ hg debugindex .hg/store/meta/dir1/00manifest.i rev offset length base linkrev nodeid p1 p2 0 0 125 0 4 63c9c0557d24 000000000000 000000000000 1 125 109 0 5 23d12a1f6e0e 000000000000 000000000000 $ echo 2 > dir1/a $ hg --config experimental.treemanifest=False ci -qm 'modify dir1/a' $ hg debugindex .hg/store/meta/dir1/00manifest.i rev offset length base linkrev nodeid p1 p2 0 0 125 0 4 63c9c0557d24 000000000000 000000000000 1 125 109 0 5 23d12a1f6e0e 000000000000 000000000000 2 234 55 0 6 3cb2d87b4250 23d12a1f6e0e 000000000000 Create deeper repo with tree manifests. $ cd .. $ hg --config experimental.treemanifest=True init deeprepo $ cd deeprepo $ mkdir a $ mkdir b $ mkdir b/bar $ mkdir b/bar/orange $ mkdir b/bar/orange/fly $ mkdir b/foo $ mkdir b/foo/apple $ mkdir b/foo/apple/bees $ touch a/one.txt $ touch a/two.txt $ touch b/bar/fruits.txt $ touch b/bar/orange/fly/gnat.py $ touch b/bar/orange/fly/housefly.txt $ touch b/foo/apple/bees/flower.py $ touch c.txt $ touch d.py $ hg ci -Aqm 'initial' We'll see that visitdir works by removing some treemanifest revlogs and running the files command with various parameters. Test files from the root. $ hg files -r . a/one.txt (glob) a/two.txt (glob) b/bar/fruits.txt (glob) b/bar/orange/fly/gnat.py (glob) b/bar/orange/fly/housefly.txt (glob) b/foo/apple/bees/flower.py (glob) c.txt d.py Excludes with a glob should not exclude everything from the glob's root $ hg files -r . -X 'b/fo?' b b/bar/fruits.txt (glob) b/bar/orange/fly/gnat.py (glob) b/bar/orange/fly/housefly.txt (glob) Test files for a subdirectory. $ mv .hg/store/meta/a oldmf $ hg files -r . b b/bar/fruits.txt (glob) b/bar/orange/fly/gnat.py (glob) b/bar/orange/fly/housefly.txt (glob) b/foo/apple/bees/flower.py (glob) $ mv oldmf .hg/store/meta/a Test files with just includes and excludes. $ mv .hg/store/meta/a oldmf $ mv .hg/store/meta/b/bar/orange/fly oldmf2 $ mv .hg/store/meta/b/foo/apple/bees oldmf3 $ hg files -r . -I path:b/bar -X path:b/bar/orange/fly -I path:b/foo -X path:b/foo/apple/bees b/bar/fruits.txt (glob) $ mv oldmf .hg/store/meta/a $ mv oldmf2 .hg/store/meta/b/bar/orange/fly $ mv oldmf3 .hg/store/meta/b/foo/apple/bees Test files for a subdirectory, excluding a directory within it. $ mv .hg/store/meta/a oldmf $ mv .hg/store/meta/b/foo oldmf2 $ hg files -r . -X path:b/foo b b/bar/fruits.txt (glob) b/bar/orange/fly/gnat.py (glob) b/bar/orange/fly/housefly.txt (glob) $ mv oldmf .hg/store/meta/a $ mv oldmf2 .hg/store/meta/b/foo Test files for a sub directory, including only a directory within it, and including an unrelated directory. $ mv .hg/store/meta/a oldmf $ mv .hg/store/meta/b/foo oldmf2 $ hg files -r . -I path:b/bar/orange -I path:a b b/bar/orange/fly/gnat.py (glob) b/bar/orange/fly/housefly.txt (glob) $ mv oldmf .hg/store/meta/a $ mv oldmf2 .hg/store/meta/b/foo Test files for a pattern, including a directory, and excluding a directory within that. $ mv .hg/store/meta/a oldmf $ mv .hg/store/meta/b/foo oldmf2 $ mv .hg/store/meta/b/bar/orange oldmf3 $ hg files -r . glob:**.txt -I path:b/bar -X path:b/bar/orange b/bar/fruits.txt (glob) $ mv oldmf .hg/store/meta/a $ mv oldmf2 .hg/store/meta/b/foo $ mv oldmf3 .hg/store/meta/b/bar/orange