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.
Create test repository:
$ hg init repo
$ cd repo
$ echo x1 > x.txt
$ hg init foo
$ cd foo
$ echo y1 > y.txt
$ hg init bar
$ cd bar
$ echo z1 > z.txt
$ cd ..
$ echo 'bar = bar' > .hgsub
$ cd ..
$ echo 'foo = foo' > .hgsub
Add files --- .hgsub files must go first to trigger subrepos:
$ hg add -S .hgsub
$ hg add -S foo/.hgsub
$ hg add -S foo/bar
adding foo/bar/z.txt (glob)
$ hg add -S
adding x.txt
adding foo/y.txt (glob)
Test recursive status without committing anything:
$ hg status -S
A .hgsub
A foo/.hgsub
A foo/bar/z.txt
A foo/y.txt
A x.txt
Test recursive diff without committing anything:
$ hg diff --nodates -S foo
diff -r 000000000000 foo/.hgsub
--- /dev/null
+++ b/foo/.hgsub
@@ -0,0 +1,1 @@
+bar = bar
diff -r 000000000000 foo/y.txt
--- /dev/null
+++ b/foo/y.txt
@@ -0,0 +1,1 @@
+y1
diff -r 000000000000 foo/bar/z.txt
--- /dev/null
+++ b/foo/bar/z.txt
@@ -0,0 +1,1 @@
+z1
Commits:
$ hg commit -m fails
abort: uncommitted changes in subrepository 'foo'
(use --subrepos for recursive commit)
[255]
The --subrepos flag overwrite the config setting:
$ hg commit -m 0-0-0 --config ui.commitsubrepos=No --subrepos
committing subrepository foo
committing subrepository foo/bar (glob)
$ cd foo
$ echo y2 >> y.txt
$ hg commit -m 0-1-0
$ cd bar
$ echo z2 >> z.txt
$ hg commit -m 0-1-1
$ cd ..
$ hg commit -m 0-2-1
$ cd ..
$ hg commit -m 1-2-1
Change working directory:
$ echo y3 >> foo/y.txt
$ echo z3 >> foo/bar/z.txt
$ hg status -S
M foo/bar/z.txt
M foo/y.txt
$ hg diff --nodates -S
diff -r d254738c5f5e foo/y.txt
--- a/foo/y.txt
+++ b/foo/y.txt
@@ -1,2 +1,3 @@
y1
y2
+y3
diff -r 9647f22de499 foo/bar/z.txt
--- a/foo/bar/z.txt
+++ b/foo/bar/z.txt
@@ -1,2 +1,3 @@
z1
z2
+z3
Status call crossing repository boundaries:
$ hg status -S foo/bar/z.txt
M foo/bar/z.txt
$ hg status -S -I 'foo/?.txt'
M foo/y.txt
$ hg status -S -I '**/?.txt'
M foo/bar/z.txt
M foo/y.txt
$ hg diff --nodates -S -I '**/?.txt'
diff -r d254738c5f5e foo/y.txt
--- a/foo/y.txt
+++ b/foo/y.txt
@@ -1,2 +1,3 @@
y1
y2
+y3
diff -r 9647f22de499 foo/bar/z.txt
--- a/foo/bar/z.txt
+++ b/foo/bar/z.txt
@@ -1,2 +1,3 @@
z1
z2
+z3
Status from within a subdirectory:
$ mkdir dir
$ cd dir
$ echo a1 > a.txt
$ hg status -S
M foo/bar/z.txt
M foo/y.txt
? dir/a.txt
$ hg diff --nodates -S
diff -r d254738c5f5e foo/y.txt
--- a/foo/y.txt
+++ b/foo/y.txt
@@ -1,2 +1,3 @@
y1
y2
+y3
diff -r 9647f22de499 foo/bar/z.txt
--- a/foo/bar/z.txt
+++ b/foo/bar/z.txt
@@ -1,2 +1,3 @@
z1
z2
+z3
Status with relative path:
$ hg status -S ..
M ../foo/bar/z.txt
M ../foo/y.txt
? a.txt
XXX: filtering lfilesrepo.status() in 3.3-rc causes these files to be listed as
added instead of modified.
$ hg status -S .. --config extensions.largefiles=
M ../foo/bar/z.txt
M ../foo/y.txt
? a.txt
$ hg diff --nodates -S ..
diff -r d254738c5f5e foo/y.txt
--- a/foo/y.txt
+++ b/foo/y.txt
@@ -1,2 +1,3 @@
y1
y2
+y3
diff -r 9647f22de499 foo/bar/z.txt
--- a/foo/bar/z.txt
+++ b/foo/bar/z.txt
@@ -1,2 +1,3 @@
z1
z2
+z3
$ cd ..
Cleanup and final commit:
$ rm -r dir
$ hg commit --subrepos -m 2-3-2
committing subrepository foo
committing subrepository foo/bar (glob)
Test explicit path commands within subrepos: add/forget
$ echo z1 > foo/bar/z2.txt
$ hg status -S
? foo/bar/z2.txt
$ hg add foo/bar/z2.txt
$ hg status -S
A foo/bar/z2.txt
$ hg forget foo/bar/z2.txt
$ hg status -S
? foo/bar/z2.txt
$ hg forget foo/bar/z2.txt
not removing foo/bar/z2.txt: file is already untracked (glob)
[1]
$ hg status -S
? foo/bar/z2.txt
$ rm foo/bar/z2.txt
Log with the relationships between repo and its subrepo:
$ hg log --template '{rev}:{node|short} {desc}\n'
2:1326fa26d0c0 2-3-2
1:4b3c9ff4f66b 1-2-1
0:23376cbba0d8 0-0-0
$ hg -R foo log --template '{rev}:{node|short} {desc}\n'
3:65903cebad86 2-3-2
2:d254738c5f5e 0-2-1
1:8629ce7dcc39 0-1-0
0:af048e97ade2 0-0-0
$ hg -R foo/bar log --template '{rev}:{node|short} {desc}\n'
2:31ecbdafd357 2-3-2
1:9647f22de499 0-1-1
0:4904098473f9 0-0-0
Status between revisions:
$ hg status -S
$ hg status -S --rev 0:1
M .hgsubstate
M foo/.hgsubstate
M foo/bar/z.txt
M foo/y.txt
$ hg diff --nodates -S -I '**/?.txt' --rev 0:1
diff -r af048e97ade2 -r d254738c5f5e foo/y.txt
--- a/foo/y.txt
+++ b/foo/y.txt
@@ -1,1 +1,2 @@
y1
+y2
diff -r 4904098473f9 -r 9647f22de499 foo/bar/z.txt
--- a/foo/bar/z.txt
+++ b/foo/bar/z.txt
@@ -1,1 +1,2 @@
z1
+z2
Enable progress extension for archive tests:
$ cp $HGRCPATH $HGRCPATH.no-progress
$ cat >> $HGRCPATH <<EOF
> [extensions]
> progress =
> [progress]
> disable=False
> assume-tty = 1
> delay = 0
> # set changedelay really large so we don't see nested topics
> changedelay = 30000
> format = topic bar number
> refresh = 0
> width = 60
> EOF
Test archiving to a directory tree (the doubled lines in the output
only show up in the test output, not in real usage):
$ hg archive --subrepos ../archive
\r (no-eol) (esc)
archiving [ ] 0/3\r (no-eol) (esc)
archiving [=============> ] 1/3\r (no-eol) (esc)
archiving [===========================> ] 2/3\r (no-eol) (esc)
archiving [==========================================>] 3/3\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
archiving (foo) [ ] 0/3\r (no-eol) (esc)
archiving (foo) [===========> ] 1/3\r (no-eol) (esc)
archiving (foo) [=======================> ] 2/3\r (no-eol) (esc)
archiving (foo) [====================================>] 3/3\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
archiving (foo/bar) [ ] 0/1\r (no-eol) (glob) (esc)
archiving (foo/bar) [================================>] 1/1\r (no-eol) (glob) (esc)
\r (no-eol) (esc)
$ find ../archive | sort
../archive
../archive/.hg_archival.txt
../archive/.hgsub
../archive/.hgsubstate
../archive/foo
../archive/foo/.hgsub
../archive/foo/.hgsubstate
../archive/foo/bar
../archive/foo/bar/z.txt
../archive/foo/y.txt
../archive/x.txt
Test archiving to zip file (unzip output is unstable):
$ hg archive --subrepos --prefix '.' ../archive.zip
\r (no-eol) (esc)
archiving [ ] 0/3\r (no-eol) (esc)
archiving [=============> ] 1/3\r (no-eol) (esc)
archiving [===========================> ] 2/3\r (no-eol) (esc)
archiving [==========================================>] 3/3\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
archiving (foo) [ ] 0/3\r (no-eol) (esc)
archiving (foo) [===========> ] 1/3\r (no-eol) (esc)
archiving (foo) [=======================> ] 2/3\r (no-eol) (esc)
archiving (foo) [====================================>] 3/3\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
archiving (foo/bar) [ ] 0/1\r (no-eol) (glob) (esc)
archiving (foo/bar) [================================>] 1/1\r (no-eol) (glob) (esc)
\r (no-eol) (esc)
(unzip date formating is unstable, we do not care about it and glob it out)
$ unzip -l ../archive.zip
Archive: ../archive.zip
Length [ ]* Date [ ]* Time [ ]* Name (re)
[\- ]* (re)
172 [0-9:\- ]* .hg_archival.txt (re)
10 [0-9:\- ]* .hgsub (re)
45 [0-9:\- ]* .hgsubstate (re)
3 [0-9:\- ]* x.txt (re)
10 [0-9:\- ]* foo/.hgsub (re)
45 [0-9:\- ]* foo/.hgsubstate (re)
9 [0-9:\- ]* foo/y.txt (re)
9 [0-9:\- ]* foo/bar/z.txt (re)
[\- ]* (re)
303 [ ]* 8 files (re)
Test archiving a revision that references a subrepo that is not yet
cloned:
#if hardlink
$ hg clone -U . ../empty
\r (no-eol) (esc)
linking [ <=> ] 1\r (no-eol) (esc)
linking [ <=> ] 2\r (no-eol) (esc)
linking [ <=> ] 3\r (no-eol) (esc)
linking [ <=> ] 4\r (no-eol) (esc)
linking [ <=> ] 5\r (no-eol) (esc)
linking [ <=> ] 6\r (no-eol) (esc)
linking [ <=> ] 7\r (no-eol) (esc)
linking [ <=> ] 8\r (no-eol) (esc)
\r (no-eol) (esc)
#else
$ hg clone -U . ../empty
\r (no-eol) (esc)
linking [ <=> ] 1 (no-eol)
#endif
$ cd ../empty
#if hardlink
$ hg archive --subrepos -r tip --prefix './' ../archive.tar.gz
\r (no-eol) (esc)
archiving [ ] 0/3\r (no-eol) (esc)
archiving [=============> ] 1/3\r (no-eol) (esc)
archiving [===========================> ] 2/3\r (no-eol) (esc)
archiving [==========================================>] 3/3\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
linking [ <=> ] 1\r (no-eol) (esc)
linking [ <=> ] 2\r (no-eol) (esc)
linking [ <=> ] 3\r (no-eol) (esc)
linking [ <=> ] 4\r (no-eol) (esc)
linking [ <=> ] 5\r (no-eol) (esc)
linking [ <=> ] 6\r (no-eol) (esc)
linking [ <=> ] 7\r (no-eol) (esc)
linking [ <=> ] 8\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
archiving (foo) [ ] 0/3\r (no-eol) (esc)
archiving (foo) [===========> ] 1/3\r (no-eol) (esc)
archiving (foo) [=======================> ] 2/3\r (no-eol) (esc)
archiving (foo) [====================================>] 3/3\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
linking [ <=> ] 1\r (no-eol) (esc)
linking [ <=> ] 2\r (no-eol) (esc)
linking [ <=> ] 3\r (no-eol) (esc)
linking [ <=> ] 4\r (no-eol) (esc)
linking [ <=> ] 5\r (no-eol) (esc)
linking [ <=> ] 6\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
archiving (foo/bar) [ ] 0/1\r (no-eol) (glob) (esc)
archiving (foo/bar) [================================>] 1/1\r (no-eol) (glob) (esc)
\r (no-eol) (esc)
cloning subrepo foo from $TESTTMP/repo/foo
cloning subrepo foo/bar from $TESTTMP/repo/foo/bar (glob)
#else
Note there's a slight output glitch on non-hardlink systems: the last
"linking" progress topic never gets closed, leading to slight output corruption on that platform.
$ hg archive --subrepos -r tip --prefix './' ../archive.tar.gz
\r (no-eol) (esc)
archiving [ ] 0/3\r (no-eol) (esc)
archiving [=============> ] 1/3\r (no-eol) (esc)
archiving [===========================> ] 2/3\r (no-eol) (esc)
archiving [==========================================>] 3/3\r (no-eol) (esc)
\r (no-eol) (esc)
\r (no-eol) (esc)
linking [ <=> ] 1\r (no-eol) (esc)
cloning subrepo foo/bar from $TESTTMP/repo/foo/bar (glob)
#endif
Archive + subrepos uses '/' for all component separators
$ tar -tzf ../archive.tar.gz | sort
.hg_archival.txt
.hgsub
.hgsubstate
foo/.hgsub
foo/.hgsubstate
foo/bar/z.txt
foo/y.txt
x.txt
The newly cloned subrepos contain no working copy:
$ hg -R foo summary
parent: -1:000000000000 (no revision checked out)
branch: default
commit: (clean)
update: 4 new changesets (update)
Disable progress extension and cleanup:
$ mv $HGRCPATH.no-progress $HGRCPATH
Test archiving when there is a directory in the way for a subrepo
created by archive:
$ hg clone -U . ../almost-empty
$ cd ../almost-empty
$ mkdir foo
$ echo f > foo/f
$ hg archive --subrepos -r tip archive
cloning subrepo foo from $TESTTMP/empty/foo
abort: destination '$TESTTMP/almost-empty/foo' is not empty (in subrepo foo) (glob)
[255]
Clone and test outgoing:
$ cd ..
$ hg clone repo repo2
updating to branch default
cloning subrepo foo from $TESTTMP/repo/foo
cloning subrepo foo/bar from $TESTTMP/repo/foo/bar (glob)
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd repo2
$ hg outgoing -S
comparing with $TESTTMP/repo (glob)
searching for changes
no changes found
comparing with $TESTTMP/repo/foo
searching for changes
no changes found
comparing with $TESTTMP/repo/foo/bar
searching for changes
no changes found
[1]
Make nested change:
$ echo y4 >> foo/y.txt
$ hg diff --nodates -S
diff -r 65903cebad86 foo/y.txt
--- a/foo/y.txt
+++ b/foo/y.txt
@@ -1,3 +1,4 @@
y1
y2
y3
+y4
$ hg commit --subrepos -m 3-4-2
committing subrepository foo
$ hg outgoing -S
comparing with $TESTTMP/repo (glob)
searching for changes
changeset: 3:2655b8ecc4ee
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3-4-2
comparing with $TESTTMP/repo/foo
searching for changes
changeset: 4:e96193d6cb36
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3-4-2
comparing with $TESTTMP/repo/foo/bar
searching for changes
no changes found
Switch to original repo and setup default path:
$ cd ../repo
$ echo '[paths]' >> .hg/hgrc
$ echo 'default = ../repo2' >> .hg/hgrc
Test incoming:
$ hg incoming -S
comparing with $TESTTMP/repo2 (glob)
searching for changes
changeset: 3:2655b8ecc4ee
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3-4-2
comparing with $TESTTMP/repo2/foo
searching for changes
changeset: 4:e96193d6cb36
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: 3-4-2
comparing with $TESTTMP/repo2/foo/bar
searching for changes
no changes found
$ hg incoming -S --bundle incoming.hg
abort: cannot combine --bundle and --subrepos
[255]
Test missing subrepo:
$ rm -r foo
$ hg status -S
warning: error "unknown revision '65903cebad86f1a84bd4f1134f62fa7dcb7a1c98'" in subrepository "foo"
Issue2619: IndexError: list index out of range on hg add with subrepos
The subrepo must sorts after the explicit filename.
$ cd ..
$ hg init test
$ cd test
$ hg init x
$ echo abc > abc.txt
$ hg ci -Am "abc"
adding abc.txt
$ echo "x = x" >> .hgsub
$ hg add .hgsub
$ touch a x/a
$ hg add a x/a
$ hg ci -Sm "added x"
committing subrepository x
$ echo abc > x/a
$ hg revert --rev '.^' "set:subrepo('glob:x*')"
abort: subrepository 'x' does not exist in 25ac2c9b3180!
[255]
$ cd ..