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wireprotov2: implement commands as a generator of objects...
wireprotov2: implement commands as a generator of objects Previously, wire protocol version 2 inherited version 1's model of having separate types to represent the results of different wire protocol commands. As I implemented more powerful commands in future commits, I found I was using a common pattern of returning a special type to hold a generator. This meant the command function required a closure to do most of the work. That made logic flow more difficult to follow. I also noticed that many commands were effectively a sequence of objects to be CBOR encoded. I think it makes sense to define version 2 commands as generators. This way, commands can simply emit the data structures they wish to send to the client. This eliminates the need for a closure in command functions and removes encoding from the bodies of commands. As part of this commit, the handling of response objects has been moved into the serverreactor class. This puts the reactor in the driver's seat with regards to CBOR encoding and error handling. Having error handling in the function that emits frames is particularly important because exceptions in that function can lead to things getting in a bad state: I'm fairly certain that uncaught exceptions in the frame generator were causing deadlocks. I also introduced a dedicated error type for explicit error reporting in command handlers. This will be used in subsequent commits. There's still a bit of work to be done here, especially around formalizing the error handling "protocol." I've added yet another TODO to track this so we don't forget. Test output changed because we're using generators and no longer know we are at the end of the data until we hit the end of the generator. This means we can't emit the end-of-stream flag until we've exhausted the generator. Hence the introduction of 0-sized end-of-stream frames. Differential Revision: https://phab.mercurial-scm.org/D4472

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test-rebase-issue-noparam-single-rev.t
130 lines | 1.9 KiB | text/troff | Tads3Lexer
/ tests / test-rebase-issue-noparam-single-rev.t
Adrian Buehlmann
tests: unify test-rebase*
r12608 $ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
>
Pierre-Yves David
phases: prevent rebase to rebase immutable changeset.
r15742 > [phases]
> publish=False
>
Adrian Buehlmann
tests: unify test-rebase*
r12608 > [alias]
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 > tglog = log -G --template "{rev}: {node|short} '{desc}' {branches}\n"
Adrian Buehlmann
tests: unify test-rebase*
r12608 > EOF
$ hg init a
$ cd a
$ echo c1 > c1
$ hg ci -Am c1
adding c1
$ echo c2 > c2
$ hg ci -Am c2
adding c2
$ echo l1 > l1
$ hg ci -Am l1
adding l1
$ hg up -q -C 1
$ echo r1 > r1
$ hg ci -Am r1
adding r1
created new head
$ echo r2 > r2
$ hg ci -Am r2
adding r2
$ hg tglog
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 @ 4: 225af64d03e6 'r2'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 3: 8d0a8c99b309 'r1'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 | o 2: 87c180a611f2 'l1'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |/
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 1: 56daeba07f4b 'c2'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 0: e8faad3d03ff 'c1'
Adrian Buehlmann
tests: unify test-rebase*
r12608
Rebase with no arguments - single revision in source branch:
$ hg up -q -C 2
$ hg rebase
Mads Kiilerich
rebase: show more useful status information while rebasing...
r23517 rebasing 2:87c180a611f2 "l1"
Matt Harbison
tests: remove (glob) annotations that were only for '\' matches...
r35394 saved backup bundle to $TESTTMP/a/.hg/strip-backup/87c180a611f2-a5be192d-rebase.hg
Adrian Buehlmann
tests: unify test-rebase*
r12608
$ hg tglog
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 @ 4: b1152cc99655 'l1'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 3: 225af64d03e6 'r2'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 2: 8d0a8c99b309 'r1'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 1: 56daeba07f4b 'c2'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 0: e8faad3d03ff 'c1'
Adrian Buehlmann
tests: unify test-rebase*
r12608
$ cd ..
$ hg init b
$ cd b
$ echo c1 > c1
$ hg ci -Am c1
adding c1
$ echo c2 > c2
$ hg ci -Am c2
adding c2
$ echo l1 > l1
$ hg ci -Am l1
adding l1
$ echo l2 > l2
$ hg ci -Am l2
adding l2
$ hg up -q -C 1
$ echo r1 > r1
$ hg ci -Am r1
adding r1
created new head
$ hg tglog
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 @ 4: 8d0a8c99b309 'r1'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 | o 3: 1ac923b736ef 'l2'
Adrian Buehlmann
tests: unify test-rebase*
r12608 | |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 | o 2: 87c180a611f2 'l1'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |/
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 1: 56daeba07f4b 'c2'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 0: e8faad3d03ff 'c1'
Adrian Buehlmann
tests: unify test-rebase*
r12608
Rebase with no arguments - single revision in target branch:
$ hg up -q -C 3
$ hg rebase
Mads Kiilerich
rebase: show more useful status information while rebasing...
r23517 rebasing 2:87c180a611f2 "l1"
rebasing 3:1ac923b736ef "l2"
Matt Harbison
tests: remove (glob) annotations that were only for '\' matches...
r35394 saved backup bundle to $TESTTMP/b/.hg/strip-backup/87c180a611f2-b980535c-rebase.hg
Adrian Buehlmann
tests: unify test-rebase*
r12608
$ hg tglog
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 @ 4: 023181307ed0 'l2'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 3: 913ab52b43b4 'l1'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 2: 8d0a8c99b309 'r1'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 1: 56daeba07f4b 'c2'
Adrian Buehlmann
tests: unify test-rebase*
r12608 |
Phil Cohen
tests: add commit hashes to log commands in rebase tests...
r35386 o 0: e8faad3d03ff 'c1'
Adrian Buehlmann
tests: unify test-rebase*
r12608
Mads Kiilerich
tests: add missing trailing 'cd ..'...
r16913
$ cd ..