Re: [Qemu-devel] [PATCH v17 6/9] qmp/hmp: add set-vm-generation-id commands

[Eric Blake]

On 01/19/2016 06:06 AM, Igor Mammedov wrote:
> Add set-vm-generation-id command to set Virtual Machine
> Generation ID counter.
> 
> QMP command example:
>     { "execute": "set-vm-generation-id",
>           "arguments": {
>               "uuid": "324e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87"
>           }
>     }
> 
> HMP command example:
>     set-vm-generation-id 324e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87
> 
> Signed-off-by: Igor Mammedov <address@hidden>
> ---

> +++ b/hmp.c
> @@ -2384,3 +2384,15 @@ void hmp_info_vm_generation_id(Monitor *mon, const 
> QDict *qdict)
>      }
>      qapi_free_UuidInfo(info);
>  }
> +
> +void hmp_set_vm_generation_id(Monitor *mon, const QDict *qdict)
> +{
> +    Error *errp = NULL;
> +    const char *uuid = qdict_get_str(qdict, "uuid");
> +
> +    qmp_set_vm_generation_id(uuid, &errp);
> +    if (errp != NULL) {

I might have written 'if (errp)', but that's cosmetic style.

> +++ b/qapi-schema.json
> @@ -4090,3 +4090,12 @@
>  # Since 2.6
>  ##
>  { 'command': 'query-vm-generation-id', 'returns': 'UuidInfo' }
> +
> +##
> +# @set-vm-generation-id
> +#
> +# Set Virtual Machine Generation ID
> +#

Missing documentation of the @uuid argument.

> +# Since 2.6
> +##
> +{ 'command': 'set-vm-generation-id', 'data': { 'uuid': 'str' } }
> diff --git a/qmp-commands.hx b/qmp-commands.hx
> index 9408a3d..306082f 100644
> --- a/qmp-commands.hx
> +++ b/qmp-commands.hx
> @@ -4814,3 +4814,25 @@ Example:
>  
>  -> { "execute": "query-vm-generation-id" }
>  <- {"return": {"UUID": "324e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87"}}

Annoying that the set uses 'uuid' and the query responds with 'UUID'; I
prefer the lowercase version in new API, so maybe patch 5/9 should
create a new return type with desirable spelling rather than reusing the
older type.


> +SQMP
> +Set Virtual Machine Generation ID counter
> +-----
> +
> +Arguments:
> +
> +- "UUID": counter ID in UUID string representation (json-string)"

wrong case, per the example.

> +
> +Example:
> +
> +-> { "execute": "set-vm-generation-id" ,
> +     "arguments": { "uuid": "324e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87" } }
> +<- {"return": {}}

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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