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python: introduce qmp-shell-wrap convenience tool

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With the current 'qmp-shell' tool developers must first spawn QEMU with
a suitable -qmp arg and then spawn qmp-shell in a separate terminal
pointing to the right socket.

With 'qmp-shell-wrap' developers can ignore QMP sockets entirely and
just pass the QEMU command and arguments they want. The program will
listen on a UNIX socket and tell QEMU to connect QMP to that.

For example, this:

 # qmp-shell-wrap -- qemu-system-x86_64 -display none

Is roughly equivalent of running:

 # qemu-system-x86_64 -display none -qmp qmp-shell-1234 &
 # qmp-shell qmp-shell-1234

Except that 'qmp-shell-wrap' switches the socket peers around so that
it is the UNIX socket server and QEMU is the socket client. This makes
QEMU reliably go away when qmp-shell-wrap exits, closing the server
socket.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20220128161157.36261-2-berrange@redhat.com
[Edited for rebase. --js]
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Daniel P. Berrangé
2022-01-28 16:11:56 +00:00
committed by John Snow
parent 31e3caf21b
commit 439125293c
3 changed files with 73 additions and 4 deletions
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1
python/setup.cfg
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@ -68,6 +68,7 @@ console_scripts =
qom-fuse = qemu.utils.qom_fuse:QOMFuse.entry_point [fuse]
qemu-ga-client = qemu.utils.qemu_ga_client:main
qmp-shell = qemu.aqmp.qmp_shell:main
qmp-shell-wrap = qemu.aqmp.qmp_shell:main_wrap
aqmp-tui = qemu.aqmp.aqmp_tui:main [tui]
[flake8]