Re: 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