Re: [Libguestfs] [PATCH v5 0/8] Configurable policy for handling deprecated interfaces
On Mon, 14 Sep 2020 at 09:55, Markus Armbruster <armbru(a)redhat.com> wrote:
New option -compat lets you configure what to do when deprecated
interfaces get used. This is intended for testing users of the
management interfaces. It is experimental.
-compat deprecated-input=<in-policy> configures what to do when
deprecated input is received. Available policies:
* accept: Accept deprecated commands and arguments (default)
* reject: Reject them
* crash: Crash
-compat deprecated-output=<out-policy> configures what to do when
deprecated output is sent. Available output policies:
* accept: Emit deprecated command results and events (default)
* hide: Suppress them
For now, -compat covers only deprecated syntactic aspects of QMP. We
may want to extend it to cover semantic aspects, CLI, and experimental
features.
Some bikeshedding on option naming...
If this only covers QMP, should we make the argument to -compat
have a name that expresses that? eg deprecated-qmp-input,
deprecated-qmp-output ?
Also, it seems a bit repetitive to say 'deprecated' here all
the time -- do you have a future use of -compat in mind which
would be to adjust something that is *not* deprecated ? If
not, maybe the 'deprecated' part should be in the option name
rather than in every argument, eg
-deprecation-compat qmp-input=crash,qmp-output=hide,cli-option=reject
?
thanks
-- PMM