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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
Mads Kiilerich - - Load All Authors

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test-mq-qdelete.t
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$ echo "[extensions]" >> $HGRCPATH
$ echo "mq=" >> $HGRCPATH
$ hg init a
$ cd a
$ echo 'base' > base
$ hg ci -Ambase -d '1 0'
adding base
$ hg qnew -d '1 0' pa
$ hg qnew -d '1 0' pb
$ hg qnew -d '1 0' pc
$ hg qdel
abort: qdelete requires at least one revision or patch name
[255]
$ hg qdel pc
abort: cannot delete applied patch pc
[255]
$ hg qpop
popping pc
now at: pb
Delete the same patch twice in one command (issue2427)
$ hg qdel pc pc
$ hg qseries
pa
pb
$ ls .hg/patches
pa
pb
series
status
$ hg qpop
popping pb
now at: pa
$ hg qdel -k 1
$ ls .hg/patches
pa
pb
series
status
$ hg qdel -r pa
patch pa finalized without changeset message
$ hg qapplied
$ hg log --template '{rev} {desc}\n'
1 [mq]: pa
0 base
$ hg qnew pd
$ hg qnew pe
$ hg qnew pf
$ hg qdel -r pe
abort: cannot delete revision 3 above applied patches
[255]
$ hg qdel -r qbase:pe
patch pd finalized without changeset message
patch pe finalized without changeset message
$ hg qapplied
pf
$ hg log --template '{rev} {desc}\n'
4 [mq]: pf
3 [mq]: pe
2 [mq]: pd
1 [mq]: pa
0 base
$ cd ..
$ hg init b
$ cd b
$ echo 'base' > base
$ hg ci -Ambase -d '1 0'
adding base
$ hg qfinish
abort: no revisions specified
[255]
$ hg qfinish -a
no patches applied
$ hg qnew -d '1 0' pa
$ hg qnew -d '1 0' pb
$ hg qnew pc # XXX fails to apply by /usr/bin/patch if we put a date
$ hg qfinish 0
abort: revision 0 is not managed
[255]
$ hg qfinish pb
abort: cannot delete revision 2 above applied patches
[255]
$ hg qpop
popping pc
now at: pb
$ hg qfinish -a pc
abort: unknown revision 'pc'!
[255]
$ hg qpush
applying pc
patch pc is empty
now at: pc
$ hg qfinish qbase:pb
patch pa finalized without changeset message
patch pb finalized without changeset message
$ hg qapplied
pc
$ hg log --template '{rev} {desc}\n'
3 imported patch pc
2 [mq]: pb
1 [mq]: pa
0 base
$ hg qfinish -a pc
patch pc finalized without changeset message
$ hg qapplied
$ hg log --template '{rev} {desc}\n'
3 imported patch pc
2 [mq]: pb
1 [mq]: pa
0 base
$ ls .hg/patches
series
status
qdel -k X && hg qimp -e X used to trigger spurious output with versioned queues
$ hg init --mq
$ hg qimport -r 3
$ hg qpop
popping imported_patch_pc
patch queue now empty
$ hg qdel -k imported_patch_pc
$ hg qimp -e imported_patch_pc
adding imported_patch_pc to series file
$ hg qfinish -a
no patches applied
resilience to inconsistency: qfinish -a with applied patches not in series
$ hg qser
imported_patch_pc
$ hg qapplied
$ hg qpush
applying imported_patch_pc
patch imported_patch_pc is empty
now at: imported_patch_pc
$ echo next >> base
$ hg qrefresh -d '1 0'
$ echo > .hg/patches/series # remove 3.diff from series to confuse mq
$ hg qfinish -a
revision 47dfa8501675 refers to unknown patches: imported_patch_pc
more complex state 'both known and unknown patches
$ echo hip >> base
$ hg qnew -f -d '1 0' -m 4 4.diff
$ echo hop >> base
$ hg qnew -f -d '1 0' -m 5 5.diff
$ echo > .hg/patches/series # remove 4.diff and 5.diff from series to confuse mq
$ echo hup >> base
$ hg qnew -f -d '1 0' -m 6 6.diff
$ echo pup > base
$ hg qfinish -a
warning: uncommitted changes in the working directory
revision 2b1c98802260 refers to unknown patches: 5.diff
revision 33a6861311c0 refers to unknown patches: 4.diff
$ cd ..