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httppeer: implement command executor for version 2 peer...
httppeer: implement command executor for version 2 peer Now that we have a new API for issuing commands which is compatible with wire protocol version 2, we can start using it with wire protocol version 2. This commit replaces our hacky implementation of _call() with something a bit more robust based on the new command executor interface. We now have proper support for issuing multiple commands per HTTP request. Each HTTP request maintains its own client reactor. The implementation is similar to the one in the legacy wire protocol. We use a ThreadPoolExecutor for spinning up a thread to read the HTTP response in the background. This allows responses to resolve in any order. While not implemented on the server yet, a client could use concurrent.futures.as_completed() with a collection of futures and handle responses as they arrive from the server. The return value from issued commands is still a simple list of raw or decoded CBOR data. This is still super hacky. We will want a rich data type for representing command responses. But at least this commit gets us one step closer to a proper peer implementation. Differential Revision: https://phab.mercurial-scm.org/D3297
Ben Schmidt - - Load All Authors

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r31056:37ab9e20 default
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test-histedit-fold-non-commute.t
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/ tests / test-histedit-fold-non-commute.t
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$ . "$TESTDIR/histedit-helpers.sh"
$ cat >> $HGRCPATH <<EOF
> [extensions]
> histedit=
> EOF
$ modwithdate ()
> {
> echo $1 > $1
> hg ci -m $1 -d "$2 0"
> }
$ initrepo ()
> {
> hg init $1
> cd $1
> for x in a b c d e f ; do
> echo $x$x$x$x$x > $x
> hg add $x
> done
> hg ci -m 'Initial commit'
> modwithdate a 1
> modwithdate b 2
> modwithdate c 3
> modwithdate d 4
> modwithdate e 5
> modwithdate f 6
> echo 'I can haz no commute' > e
> hg ci -m 'does not commute with e' -d '7 0'
> cd ..
> }
$ initrepo r
$ cd r
Initial generation of the command files
$ EDITED="$TESTTMP/editedhistory"
$ hg log --template 'pick {node|short} {rev} {desc}\n' -r 3 >> $EDITED
$ hg log --template 'pick {node|short} {rev} {desc}\n' -r 4 >> $EDITED
$ hg log --template 'fold {node|short} {rev} {desc}\n' -r 7 >> $EDITED
$ hg log --template 'pick {node|short} {rev} {desc}\n' -r 5 >> $EDITED
$ hg log --template 'pick {node|short} {rev} {desc}\n' -r 6 >> $EDITED
$ cat $EDITED
pick 092e4ce14829 3 c
pick ae78f4c9d74f 4 d
fold 42abbb61bede 7 does not commute with e
pick 7f3755409b00 5 e
pick dd184f2faeb0 6 f
log before edit
$ hg log --graph
@ changeset: 7:42abbb61bede
| tag: tip
| user: test
| date: Thu Jan 01 00:00:07 1970 +0000
| summary: does not commute with e
|
o changeset: 6:dd184f2faeb0
| user: test
| date: Thu Jan 01 00:00:06 1970 +0000
| summary: f
|
o changeset: 5:7f3755409b00
| user: test
| date: Thu Jan 01 00:00:05 1970 +0000
| summary: e
|
o changeset: 4:ae78f4c9d74f
| user: test
| date: Thu Jan 01 00:00:04 1970 +0000
| summary: d
|
o changeset: 3:092e4ce14829
| user: test
| date: Thu Jan 01 00:00:03 1970 +0000
| summary: c
|
o changeset: 2:40ccdd8beb95
| user: test
| date: Thu Jan 01 00:00:02 1970 +0000
| summary: b
|
o changeset: 1:cd997a145b29
| user: test
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: a
|
o changeset: 0:1715188a53c7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Initial commit
edit the history
$ hg histedit 3 --commands $EDITED 2>&1 | fixbundle
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
merging e
warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
Fix up the change (fold 42abbb61bede)
(hg histedit --continue to resume)
fix up
$ echo 'I can haz no commute' > e
$ hg resolve --mark e
(no more unresolved files)
continue: hg histedit --continue
$ HGEDITOR=cat hg histedit --continue 2>&1 | fixbundle | grep -v '2 files removed'
d
***
does not commute with e
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'default'
HG: changed d
HG: changed e
merging e
warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
Fix up the change (pick 7f3755409b00)
(hg histedit --continue to resume)
just continue this time
keep the non-commuting change, and thus the pending change will be dropped
$ hg revert -r 'p1()' e
$ hg resolve --mark e
(no more unresolved files)
continue: hg histedit --continue
$ hg diff
$ hg histedit --continue 2>&1 | fixbundle
7f3755409b00: skipping changeset (no changes)
log after edit
$ hg log --graph
@ changeset: 5:1300355b1a54
| tag: tip
| user: test
| date: Thu Jan 01 00:00:06 1970 +0000
| summary: f
|
o changeset: 4:e2ac33269083
| user: test
| date: Thu Jan 01 00:00:07 1970 +0000
| summary: d
|
o changeset: 3:092e4ce14829
| user: test
| date: Thu Jan 01 00:00:03 1970 +0000
| summary: c
|
o changeset: 2:40ccdd8beb95
| user: test
| date: Thu Jan 01 00:00:02 1970 +0000
| summary: b
|
o changeset: 1:cd997a145b29
| user: test
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: a
|
o changeset: 0:1715188a53c7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Initial commit
contents of e
$ hg cat e
I can haz no commute
manifest
$ hg manifest
a
b
c
d
e
f
$ cd ..
Repeat test using "roll", not "fold". "roll" folds in changes but drops message and date
$ initrepo r2
$ cd r2
Initial generation of the command files
$ EDITED="$TESTTMP/editedhistory.2"
$ hg log --template 'pick {node|short} {rev} {desc}\n' -r 3 >> $EDITED
$ hg log --template 'pick {node|short} {rev} {desc}\n' -r 4 >> $EDITED
$ hg log --template 'roll {node|short} {rev} {desc}\n' -r 7 >> $EDITED
$ hg log --template 'pick {node|short} {rev} {desc}\n' -r 5 >> $EDITED
$ hg log --template 'pick {node|short} {rev} {desc}\n' -r 6 >> $EDITED
$ cat $EDITED
pick 092e4ce14829 3 c
pick ae78f4c9d74f 4 d
roll 42abbb61bede 7 does not commute with e
pick 7f3755409b00 5 e
pick dd184f2faeb0 6 f
log before edit
$ hg log --graph
@ changeset: 7:42abbb61bede
| tag: tip
| user: test
| date: Thu Jan 01 00:00:07 1970 +0000
| summary: does not commute with e
|
o changeset: 6:dd184f2faeb0
| user: test
| date: Thu Jan 01 00:00:06 1970 +0000
| summary: f
|
o changeset: 5:7f3755409b00
| user: test
| date: Thu Jan 01 00:00:05 1970 +0000
| summary: e
|
o changeset: 4:ae78f4c9d74f
| user: test
| date: Thu Jan 01 00:00:04 1970 +0000
| summary: d
|
o changeset: 3:092e4ce14829
| user: test
| date: Thu Jan 01 00:00:03 1970 +0000
| summary: c
|
o changeset: 2:40ccdd8beb95
| user: test
| date: Thu Jan 01 00:00:02 1970 +0000
| summary: b
|
o changeset: 1:cd997a145b29
| user: test
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: a
|
o changeset: 0:1715188a53c7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Initial commit
edit the history
$ hg histedit 3 --commands $EDITED 2>&1 | fixbundle
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
merging e
warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
Fix up the change (roll 42abbb61bede)
(hg histedit --continue to resume)
fix up
$ echo 'I can haz no commute' > e
$ hg resolve --mark e
(no more unresolved files)
continue: hg histedit --continue
$ hg histedit --continue 2>&1 | fixbundle | grep -v '2 files removed'
merging e
warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
Fix up the change (pick 7f3755409b00)
(hg histedit --continue to resume)
just continue this time
$ hg revert -r 'p1()' e
$ hg resolve --mark e
(no more unresolved files)
continue: hg histedit --continue
$ hg histedit --continue 2>&1 | fixbundle
7f3755409b00: skipping changeset (no changes)
log after edit
$ hg log --graph
@ changeset: 5:b538bcb461be
| tag: tip
| user: test
| date: Thu Jan 01 00:00:06 1970 +0000
| summary: f
|
o changeset: 4:317e37cb6d66
| user: test
| date: Thu Jan 01 00:00:04 1970 +0000
| summary: d
|
o changeset: 3:092e4ce14829
| user: test
| date: Thu Jan 01 00:00:03 1970 +0000
| summary: c
|
o changeset: 2:40ccdd8beb95
| user: test
| date: Thu Jan 01 00:00:02 1970 +0000
| summary: b
|
o changeset: 1:cd997a145b29
| user: test
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: a
|
o changeset: 0:1715188a53c7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: Initial commit
contents of e
$ hg cat e
I can haz no commute
manifest
$ hg manifest
a
b
c
d
e
f
description is taken from rollup target commit
$ hg log --debug --rev 4
changeset: 4:317e37cb6d66c1c84628c00e5bf4c8c292831951
phase: draft
parent: 3:092e4ce14829f4974399ce4316d59f64ef0b6725
parent: -1:0000000000000000000000000000000000000000
manifest: 4:b068a323d969f22af1296ec6a5ea9384cef437ac
user: test
date: Thu Jan 01 00:00:04 1970 +0000
files: d e
extra: branch=default
extra: histedit_source=ae78f4c9d74ffa4b6cb5045001c303fe9204e890,42abbb61bede6f4366fa1e74a664343e5d558a70
description:
d
done with repo r2
$ cd ..