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.
$ echo "[extensions]" >> $HGRCPATH
$ echo "mq=" >> $HGRCPATH
$ echo "[diff]" >> $HGRCPATH
$ echo "nodates=true" >> $HGRCPATH
$ catlog() {
> cat .hg/patches/$1.patch | sed -e "s/^diff \-r [0-9a-f]* /diff -r ... /" \
> -e "s/^\(# Parent \).*/\1/"
> hg log --template "{rev}: {desc} - {author}\n"
> }
$ runtest() {
> echo ==== init
> hg init a
> cd a
> hg qinit
>
>
> echo ==== qnew -U
> hg qnew -U 1.patch
> catlog 1
>
> echo ==== qref
> echo "1" >1
> hg add
> hg qref
> catlog 1
>
> echo ==== qref -u
> hg qref -u mary
> catlog 1
>
> echo ==== qnew
> hg qnew 2.patch
> echo "2" >2
> hg add
> hg qref
> catlog 2
>
> echo ==== qref -u
> hg qref -u jane
> catlog 2
>
>
> echo ==== qnew -U -m
> hg qnew -U -m "Three" 3.patch
> catlog 3
>
> echo ==== qref
> echo "3" >3
> hg add
> hg qref
> catlog 3
>
> echo ==== qref -m
> hg qref -m "Drei"
> catlog 3
>
> echo ==== qref -u
> hg qref -u mary
> catlog 3
>
> echo ==== qref -u -m
> hg qref -u maria -m "Three (again)"
> catlog 3
>
> echo ==== qnew -m
> hg qnew -m "Four" 4.patch
> echo "4" >4of t
> hg add
> hg qref
> catlog 4
>
> echo ==== qref -u
> hg qref -u jane
> catlog 4
>
>
> echo ==== qnew with HG header
> hg qnew --config 'mq.plain=true' 5.patch
> hg qpop
> echo "# HG changeset patch" >>.hg/patches/5.patch
> echo "# User johndoe" >>.hg/patches/5.patch
> hg qpush 2>&1 | grep 'now at'
> catlog 5
>
> echo ==== hg qref
> echo "5" >5
> hg add
> hg qref
> catlog 5
>
> echo ==== hg qref -U
> hg qref -U
> catlog 5
>
> echo ==== hg qref -u
> hg qref -u johndeere
> catlog 5
>
>
> echo ==== qnew with plain header
> hg qnew --config 'mq.plain=true' -U 6.patch
> hg qpop
> hg qpush 2>&1 | grep 'now at'
> catlog 6
>
> echo ==== hg qref
> echo "6" >6
> hg add
> hg qref
> catlog 6
>
> echo ==== hg qref -U
> hg qref -U
> catlog 6
>
> echo ==== hg qref -u
> hg qref -u johndeere
> catlog 6
>
>
> echo ==== "qpop -a / qpush -a"
> hg qpop -a
> hg qpush -a
> hg log --template "{rev}: {desc} - {author}\n"
> }
======= plain headers
$ echo "[mq]" >> $HGRCPATH
$ echo "plain=true" >> $HGRCPATH
$ mkdir sandbox
$ (cd sandbox ; runtest)
==== init
==== qnew -U
From: test
0: [mq]: 1.patch - test
==== qref
adding 1
From: test
diff -r ... 1
--- /dev/null
+++ b/1
@@ -0,0 +1,1 @@
+1
0: [mq]: 1.patch - test
==== qref -u
From: mary
diff -r ... 1
--- /dev/null
+++ b/1
@@ -0,0 +1,1 @@
+1
0: [mq]: 1.patch - mary
==== qnew
adding 2
diff -r ... 2
--- /dev/null
+++ b/2
@@ -0,0 +1,1 @@
+2
1: [mq]: 2.patch - test
0: [mq]: 1.patch - mary
==== qref -u
From: jane
diff -r ... 2
--- /dev/null
+++ b/2
@@ -0,0 +1,1 @@
+2
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew -U -m
From: test
Three
2: Three - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref
adding 3
From: test
Three
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Three - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -m
From: test
Drei
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Drei - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u
From: mary
Drei
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Drei - mary
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u -m
From: maria
Three (again)
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew -m
adding 4of
Four
diff -r ... 4of
--- /dev/null
+++ b/4of
@@ -0,0 +1,1 @@
+4 t
3: Four - test
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u
From: jane
Four
diff -r ... 4of
--- /dev/null
+++ b/4of
@@ -0,0 +1,1 @@
+4 t
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew with HG header
popping 5.patch
now at: 4.patch
now at: 5.patch
# HG changeset patch
# User johndoe
4: imported patch 5.patch - johndoe
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref
adding 5
# HG changeset patch
# User johndoe
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - johndoe
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -U
# HG changeset patch
# User test
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - test
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -u
# HG changeset patch
# User johndeere
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew with plain header
popping 6.patch
now at: 5.patch
now at: 6.patch
From: test
5: imported patch 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref
adding 6
From: test
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -U
From: test
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -u
From: johndeere
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - johndeere
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qpop -a / qpush -a
popping 6.patch
popping 5.patch
popping 4.patch
popping 3.patch
popping 2.patch
popping 1.patch
patch queue now empty
applying 1.patch
applying 2.patch
applying 3.patch
applying 4.patch
applying 5.patch
applying 6.patch
now at: 6.patch
5: imported patch 6.patch - johndeere
4: imported patch 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: imported patch 2.patch - jane
0: imported patch 1.patch - mary
$ rm -r sandbox
======= hg headers
$ echo "plain=false" >> $HGRCPATH
$ mkdir sandbox
$ (cd sandbox ; runtest)
==== init
==== qnew -U
# HG changeset patch
# User test
# Parent
0: [mq]: 1.patch - test
==== qref
adding 1
# HG changeset patch
# User test
# Parent
diff -r ... 1
--- /dev/null
+++ b/1
@@ -0,0 +1,1 @@
+1
0: [mq]: 1.patch - test
==== qref -u
# HG changeset patch
# User mary
# Parent
diff -r ... 1
--- /dev/null
+++ b/1
@@ -0,0 +1,1 @@
+1
0: [mq]: 1.patch - mary
==== qnew
adding 2
# HG changeset patch
# Parent
diff -r ... 2
--- /dev/null
+++ b/2
@@ -0,0 +1,1 @@
+2
1: [mq]: 2.patch - test
0: [mq]: 1.patch - mary
==== qref -u
# HG changeset patch
# User jane
# Parent
diff -r ... 2
--- /dev/null
+++ b/2
@@ -0,0 +1,1 @@
+2
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew -U -m
# HG changeset patch
# User test
# Parent
Three
2: Three - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref
adding 3
# HG changeset patch
# User test
# Parent
Three
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Three - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -m
# HG changeset patch
# User test
# Parent
Drei
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Drei - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u
# HG changeset patch
# User mary
# Parent
Drei
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Drei - mary
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u -m
# HG changeset patch
# User maria
# Parent
Three (again)
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew -m
adding 4of
# HG changeset patch
# Parent
Four
diff -r ... 4of
--- /dev/null
+++ b/4of
@@ -0,0 +1,1 @@
+4 t
3: Four - test
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u
# HG changeset patch
# User jane
# Parent
Four
diff -r ... 4of
--- /dev/null
+++ b/4of
@@ -0,0 +1,1 @@
+4 t
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew with HG header
popping 5.patch
now at: 4.patch
now at: 5.patch
# HG changeset patch
# User johndoe
4: imported patch 5.patch - johndoe
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref
adding 5
# HG changeset patch
# User johndoe
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - johndoe
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -U
# HG changeset patch
# User test
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - test
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -u
# HG changeset patch
# User johndeere
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew with plain header
popping 6.patch
now at: 5.patch
now at: 6.patch
From: test
5: imported patch 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref
adding 6
From: test
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -U
From: test
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -u
From: johndeere
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - johndeere
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qpop -a / qpush -a
popping 6.patch
popping 5.patch
popping 4.patch
popping 3.patch
popping 2.patch
popping 1.patch
patch queue now empty
applying 1.patch
applying 2.patch
applying 3.patch
applying 4.patch
applying 5.patch
applying 6.patch
now at: 6.patch
5: imported patch 6.patch - johndeere
4: imported patch 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: imported patch 2.patch - jane
0: imported patch 1.patch - mary
$ rm -r sandbox
$ runtest
==== init
==== qnew -U
# HG changeset patch
# User test
# Parent
0: [mq]: 1.patch - test
==== qref
adding 1
# HG changeset patch
# User test
# Parent
diff -r ... 1
--- /dev/null
+++ b/1
@@ -0,0 +1,1 @@
+1
0: [mq]: 1.patch - test
==== qref -u
# HG changeset patch
# User mary
# Parent
diff -r ... 1
--- /dev/null
+++ b/1
@@ -0,0 +1,1 @@
+1
0: [mq]: 1.patch - mary
==== qnew
adding 2
# HG changeset patch
# Parent
diff -r ... 2
--- /dev/null
+++ b/2
@@ -0,0 +1,1 @@
+2
1: [mq]: 2.patch - test
0: [mq]: 1.patch - mary
==== qref -u
# HG changeset patch
# User jane
# Parent
diff -r ... 2
--- /dev/null
+++ b/2
@@ -0,0 +1,1 @@
+2
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew -U -m
# HG changeset patch
# User test
# Parent
Three
2: Three - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref
adding 3
# HG changeset patch
# User test
# Parent
Three
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Three - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -m
# HG changeset patch
# User test
# Parent
Drei
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Drei - test
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u
# HG changeset patch
# User mary
# Parent
Drei
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Drei - mary
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u -m
# HG changeset patch
# User maria
# Parent
Three (again)
diff -r ... 3
--- /dev/null
+++ b/3
@@ -0,0 +1,1 @@
+3
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew -m
adding 4of
# HG changeset patch
# Parent
Four
diff -r ... 4of
--- /dev/null
+++ b/4of
@@ -0,0 +1,1 @@
+4 t
3: Four - test
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qref -u
# HG changeset patch
# User jane
# Parent
Four
diff -r ... 4of
--- /dev/null
+++ b/4of
@@ -0,0 +1,1 @@
+4 t
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew with HG header
popping 5.patch
now at: 4.patch
now at: 5.patch
# HG changeset patch
# User johndoe
4: imported patch 5.patch - johndoe
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref
adding 5
# HG changeset patch
# User johndoe
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - johndoe
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -U
# HG changeset patch
# User test
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - test
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -u
# HG changeset patch
# User johndeere
# Parent
diff -r ... 5
--- /dev/null
+++ b/5
@@ -0,0 +1,1 @@
+5
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qnew with plain header
popping 6.patch
now at: 5.patch
now at: 6.patch
From: test
5: imported patch 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref
adding 6
From: test
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -U
From: test
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - test
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== hg qref -u
From: johndeere
diff -r ... 6
--- /dev/null
+++ b/6
@@ -0,0 +1,1 @@
+6
5: [mq]: 6.patch - johndeere
4: [mq]: 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: [mq]: 2.patch - jane
0: [mq]: 1.patch - mary
==== qpop -a / qpush -a
popping 6.patch
popping 5.patch
popping 4.patch
popping 3.patch
popping 2.patch
popping 1.patch
patch queue now empty
applying 1.patch
applying 2.patch
applying 3.patch
applying 4.patch
applying 5.patch
applying 6.patch
now at: 6.patch
5: imported patch 6.patch - johndeere
4: imported patch 5.patch - johndeere
3: Four - jane
2: Three (again) - maria
1: imported patch 2.patch - jane
0: imported patch 1.patch - mary
$ cd ..