A brief look at deprecating our JSON extensions over RFC 8259

[Paolo Bonzini]

On 22/02/21 18:54, Daniel P. Berrangé wrote:
>> These are sent to QEMU as double-quoted strings (the single-quoted JSON is
>> parsed to get interpolation and printed back; commit 563890c7c7, "libqtest:
>> escape strings in QMP commands, fix leak", 2014-07-01). However, doing the
>> interpolation requires a parser that recognizes the single-quoted strings.
>
> IMHO this is the wrong solution to the problem.  Consider the equivalent
> libvirt code that uses a standard JSON library underneath and has a high
> level API to serialize args into the command
> 
>        qemuMonitorJSONMakeCommand("qom-get",
>                                   "s:path", id,
> 				 "s:property", "temperature");
> 
> Of course this example is reasonably easy since it is a flat set of
> arguments. Nested args get slightly more complicated, but still always
> preferrable to doing string interpolation IMHO.

I don't disagree. I'm just stating why I wanted a clarification from Markus.

Paolo