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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
Boris Feld - - Load All Authors

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test-infinitepush-bundlestore.t
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/ tests / test-infinitepush-bundlestore.t
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Gregory Szorc
tests: disable infinitepush tests for simple store...
 r37397 #require no-reposimplestore
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204
Create an ondisk bundlestore in .hg/scratchbranches
$ . "$TESTDIR/library-infinitepush.sh"
$ cp $HGRCPATH $TESTTMP/defaulthgrc
$ setupcommon
$ mkcommit() {
> echo "$1" > "$1"
> hg add "$1"
> hg ci -m "$1"
> }
$ hg init repo
$ cd repo
Check that we can send a scratch on the server and it does not show there in
the history but is stored on disk
$ setupserver
$ cd ..
$ hg clone ssh://user@dummy/repo client -q
$ cd client
$ mkcommit initialcommit
Pulkit Goyal
infinitepush: drop the `--create` flag to push command...
 r37215 $ hg push -r .
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 pushing to ssh://user@dummy/repo
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 1 changesets with 1 changes to 1 files
$ mkcommit scratchcommit
Pulkit Goyal
infinitepush: drop the `--to` flag to push and use `-B` instead...
 r37216 $ hg push -r . -B scratch/mybranch
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 pushing to ssh://user@dummy/repo
searching for changes
remote: pushing 1 commit:
remote: 20759b6926ce scratchcommit
$ hg log -G
@ changeset: 1:20759b6926ce
| bookmark: scratch/mybranch
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: scratchcommit
|
o changeset: 0:67145f466344
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: initialcommit
$ hg log -G -R ../repo
o changeset: 0:67145f466344
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: initialcommit
$ find ../repo/.hg/scratchbranches | sort
../repo/.hg/scratchbranches
../repo/.hg/scratchbranches/filebundlestore
../repo/.hg/scratchbranches/filebundlestore/b9
../repo/.hg/scratchbranches/filebundlestore/b9/e1
../repo/.hg/scratchbranches/filebundlestore/b9/e1/b9e1ee5f93fb6d7c42496fc176c09839639dd9cc
../repo/.hg/scratchbranches/index
../repo/.hg/scratchbranches/index/bookmarkmap
../repo/.hg/scratchbranches/index/bookmarkmap/scratch
../repo/.hg/scratchbranches/index/bookmarkmap/scratch/mybranch
../repo/.hg/scratchbranches/index/nodemap
../repo/.hg/scratchbranches/index/nodemap/20759b6926ce827d5a8c73eb1fa9726d6f7defb2
From another client we can get the scratchbranch if we ask for it explicitely
$ cd ..
$ hg clone ssh://user@dummy/repo client2 -q
$ cd client2
$ hg pull -B scratch/mybranch --traceback
pulling from ssh://user@dummy/repo
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
Boris Feld
phase: report number of non-public changeset alongside the new range...
 r39516 new changesets 20759b6926ce (1 drafts)
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 (run 'hg update' to get a working copy)
$ hg log -G
o changeset: 1:20759b6926ce
| bookmark: scratch/mybranch
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: scratchcommit
|
@ changeset: 0:67145f466344
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: initialcommit
$ cd ..
Push to non-scratch bookmark
$ cd client
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ mkcommit newcommit
created new head
$ hg push -r .
pushing to ssh://user@dummy/repo
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 1 changesets with 1 changes to 1 files
$ hg log -G -T '{desc} {phase} {bookmarks}'
@ newcommit public
|
| o scratchcommit draft scratch/mybranch
|/
o initialcommit public
Push to scratch branch
$ cd ../client2
$ hg up -q scratch/mybranch
$ mkcommit 'new scratch commit'
Pulkit Goyal
infinitepush: drop the `--to` flag to push and use `-B` instead...
 r37216 $ hg push -r . -B scratch/mybranch
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 pushing to ssh://user@dummy/repo
searching for changes
remote: pushing 2 commits:
remote: 20759b6926ce scratchcommit
remote: 1de1d7d92f89 new scratch commit
$ hg log -G -T '{desc} {phase} {bookmarks}'
@ new scratch commit draft scratch/mybranch
|
o scratchcommit draft
|
o initialcommit public
$ scratchnodes
1de1d7d92f8965260391d0513fe8a8d5973d3042 bed63daed3beba97fff2e819a148cf415c217a85
20759b6926ce827d5a8c73eb1fa9726d6f7defb2 bed63daed3beba97fff2e819a148cf415c217a85
$ scratchbookmarks
scratch/mybranch 1de1d7d92f8965260391d0513fe8a8d5973d3042
Push scratch bookmark with no new revs
Pulkit Goyal
infinitepush: drop the `--to` flag to push and use `-B` instead...
 r37216 $ hg push -r . -B scratch/anotherbranch
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 pushing to ssh://user@dummy/repo
searching for changes
remote: pushing 2 commits:
remote: 20759b6926ce scratchcommit
remote: 1de1d7d92f89 new scratch commit
$ hg log -G -T '{desc} {phase} {bookmarks}'
@ new scratch commit draft scratch/anotherbranch scratch/mybranch
|
o scratchcommit draft
|
o initialcommit public
$ scratchbookmarks
scratch/anotherbranch 1de1d7d92f8965260391d0513fe8a8d5973d3042
scratch/mybranch 1de1d7d92f8965260391d0513fe8a8d5973d3042
Pull scratch and non-scratch bookmark at the same time
$ hg -R ../repo book newbook
$ cd ../client
$ hg pull -B newbook -B scratch/mybranch --traceback
pulling from ssh://user@dummy/repo
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 2 files
adding remote bookmark newbook
Boris Feld
phase: report number of non-public changeset alongside the new range...
 r39516 new changesets 1de1d7d92f89 (1 drafts)
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 (run 'hg update' to get a working copy)
$ hg log -G -T '{desc} {phase} {bookmarks}'
o new scratch commit draft scratch/mybranch
|
| @ newcommit public
| |
o | scratchcommit draft
|/
o initialcommit public
Push scratch revision without bookmark with --bundle-store
$ hg up -q tip
$ mkcommit scratchcommitnobook
$ hg log -G -T '{desc} {phase} {bookmarks}'
@ scratchcommitnobook draft
|
o new scratch commit draft scratch/mybranch
|
| o newcommit public
| |
o | scratchcommit draft
|/
o initialcommit public
$ hg push -r . --bundle-store
pushing to ssh://user@dummy/repo
searching for changes
remote: pushing 3 commits:
remote: 20759b6926ce scratchcommit
remote: 1de1d7d92f89 new scratch commit
remote: 2b5d271c7e0d scratchcommitnobook
$ hg -R ../repo log -G -T '{desc} {phase}'
o newcommit public
|
o initialcommit public
$ scratchnodes
1de1d7d92f8965260391d0513fe8a8d5973d3042 66fa08ff107451320512817bed42b7f467a1bec3
20759b6926ce827d5a8c73eb1fa9726d6f7defb2 66fa08ff107451320512817bed42b7f467a1bec3
2b5d271c7e0d25d811359a314d413ebcc75c9524 66fa08ff107451320512817bed42b7f467a1bec3
Test with pushrebase
$ mkcommit scratchcommitwithpushrebase
Pulkit Goyal
infinitepush: drop the `--to` flag to push and use `-B` instead...
 r37216 $ hg push -r . -B scratch/mybranch
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 pushing to ssh://user@dummy/repo
searching for changes
remote: pushing 4 commits:
remote: 20759b6926ce scratchcommit
remote: 1de1d7d92f89 new scratch commit
remote: 2b5d271c7e0d scratchcommitnobook
remote: d8c4f54ab678 scratchcommitwithpushrebase
$ hg -R ../repo log -G -T '{desc} {phase}'
o newcommit public
|
o initialcommit public
$ scratchnodes
1de1d7d92f8965260391d0513fe8a8d5973d3042 e3cb2ac50f9e1e6a5ead3217fc21236c84af4397
20759b6926ce827d5a8c73eb1fa9726d6f7defb2 e3cb2ac50f9e1e6a5ead3217fc21236c84af4397
2b5d271c7e0d25d811359a314d413ebcc75c9524 e3cb2ac50f9e1e6a5ead3217fc21236c84af4397
d8c4f54ab678fd67cb90bb3f272a2dc6513a59a7 e3cb2ac50f9e1e6a5ead3217fc21236c84af4397
Change the order of pushrebase and infinitepush
$ mkcommit scratchcommitwithpushrebase2
Pulkit Goyal
infinitepush: drop the `--to` flag to push and use `-B` instead...
 r37216 $ hg push -r . -B scratch/mybranch
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 pushing to ssh://user@dummy/repo
searching for changes
remote: pushing 5 commits:
remote: 20759b6926ce scratchcommit
remote: 1de1d7d92f89 new scratch commit
remote: 2b5d271c7e0d scratchcommitnobook
remote: d8c4f54ab678 scratchcommitwithpushrebase
remote: 6c10d49fe927 scratchcommitwithpushrebase2
$ hg -R ../repo log -G -T '{desc} {phase}'
o newcommit public
|
o initialcommit public
$ scratchnodes
1de1d7d92f8965260391d0513fe8a8d5973d3042 cd0586065eaf8b483698518f5fc32531e36fd8e0
20759b6926ce827d5a8c73eb1fa9726d6f7defb2 cd0586065eaf8b483698518f5fc32531e36fd8e0
2b5d271c7e0d25d811359a314d413ebcc75c9524 cd0586065eaf8b483698518f5fc32531e36fd8e0
6c10d49fe92751666c40263f96721b918170d3da cd0586065eaf8b483698518f5fc32531e36fd8e0
d8c4f54ab678fd67cb90bb3f272a2dc6513a59a7 cd0586065eaf8b483698518f5fc32531e36fd8e0
Non-fastforward scratch bookmark push
$ hg log -GT "{rev}:{node} {desc}\n"
@ 6:6c10d49fe92751666c40263f96721b918170d3da scratchcommitwithpushrebase2
|
o 5:d8c4f54ab678fd67cb90bb3f272a2dc6513a59a7 scratchcommitwithpushrebase
|
o 4:2b5d271c7e0d25d811359a314d413ebcc75c9524 scratchcommitnobook
|
o 3:1de1d7d92f8965260391d0513fe8a8d5973d3042 new scratch commit
|
| o 2:91894e11e8255bf41aa5434b7b98e8b2aa2786eb newcommit
| |
o | 1:20759b6926ce827d5a8c73eb1fa9726d6f7defb2 scratchcommit
|/
o 0:67145f4663446a9580364f70034fea6e21293b6f initialcommit
$ hg up 6c10d49fe927
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo 1 > amend
$ hg add amend
$ hg ci --amend -m 'scratch amended commit'
Matt Harbison
tests: drop a useless glob in test-infinite-bundlestore.t...
 r37830 saved backup bundle to $TESTTMP/client/.hg/strip-backup/6c10d49fe927-c99ffec5-amend.hg
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 $ hg log -G -T '{desc} {phase} {bookmarks}'
@ scratch amended commit draft scratch/mybranch
|
o scratchcommitwithpushrebase draft
|
o scratchcommitnobook draft
|
o new scratch commit draft
|
| o newcommit public
| |
o | scratchcommit draft
|/
o initialcommit public
$ scratchbookmarks
scratch/anotherbranch 1de1d7d92f8965260391d0513fe8a8d5973d3042
scratch/mybranch 6c10d49fe92751666c40263f96721b918170d3da
Pulkit Goyal
infinitepush: drop the `--to` flag to push and use `-B` instead...
 r37216 $ hg push -r . -B scratch/mybranch
Pulkit Goyal
infinitepush: move the extension to core from fb-hgext...
 r37204 pushing to ssh://user@dummy/repo
searching for changes
remote: pushing 5 commits:
remote: 20759b6926ce scratchcommit
remote: 1de1d7d92f89 new scratch commit
remote: 2b5d271c7e0d scratchcommitnobook
remote: d8c4f54ab678 scratchcommitwithpushrebase
remote: 8872775dd97a scratch amended commit
$ scratchbookmarks
scratch/anotherbranch 1de1d7d92f8965260391d0513fe8a8d5973d3042
scratch/mybranch 8872775dd97a750e1533dc1fbbca665644b32547
$ hg log -G -T '{desc} {phase} {bookmarks}'
@ scratch amended commit draft scratch/mybranch
|
o scratchcommitwithpushrebase draft
|
o scratchcommitnobook draft
|
o new scratch commit draft
|
| o newcommit public
| |
o | scratchcommit draft
|/
o initialcommit public
Check that push path is not ignored. Add new path to the hgrc
$ cat >> .hg/hgrc << EOF
> [paths]
> peer=ssh://user@dummy/client2
> EOF
Checkout last non-scrath commit
$ hg up 91894e11e8255
1 files updated, 0 files merged, 6 files removed, 0 files unresolved
$ mkcommit peercommit
Use --force because this push creates new head
$ hg push peer -r . -f
pushing to ssh://user@dummy/client2
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 2 changesets with 2 changes to 2 files (+1 heads)
$ hg -R ../repo log -G -T '{desc} {phase} {bookmarks}'
o newcommit public
|
o initialcommit public
$ hg -R ../client2 log -G -T '{desc} {phase} {bookmarks}'
o peercommit public
|
o newcommit public
|
| @ new scratch commit draft scratch/anotherbranch scratch/mybranch
| |
| o scratchcommit draft
|/
o initialcommit public