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* python: support recording QMP session to a fileDaniel P. Berrangé2022-02-231-7/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When running QMP commands with very large response payloads, it is often not easy to spot the info you want. If we can save the response to a file then tools like 'grep' or 'jq' can be used to extract information. For convenience of processing, we merge the QMP command and response dictionaries together: { "arguments": {}, "execute": "query-kvm", "return": { "enabled": false, "present": true } } Example usage $ ./scripts/qmp/qmp-shell-wrap -l q.log -p -- ./build/qemu-system-x86_64 -display none Welcome to the QMP low-level shell! Connected (QEMU) query-kvm { "return": { "enabled": false, "present": true } } (QEMU) query-mice { "return": [ { "absolute": false, "current": true, "index": 2, "name": "QEMU PS/2 Mouse" } ] } $ jq --slurp '. | to_entries[] | select(.value.execute == "query-kvm") | .value.return.enabled' < q.log false Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20220128161157.36261-3-berrange@redhat.com Signed-off-by: John Snow <jsnow@redhat.com>
* python: introduce qmp-shell-wrap convenience toolDaniel P. Berrangé2022-02-231-4/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* python: move qmp-shell under the AQMP packageJohn Snow2022-01-211-0/+537
Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Beraldo Leal <bleal@redhat.com>