[libvirt] [PATCH v5 24/36] qemu_monitor: Introduce qemuMonitorCPUModelInfo / JSON conversion
Jiri Denemark
jdenemar at redhat.com
Fri Jan 4 19:57:31 UTC 2019
On Sun, Dec 02, 2018 at 23:10:18 -0600, Chris Venteicher wrote:
> Conversion functions are used convert CPUModelInfo structs into
> QMP JSON and the reverse.
>
> QMP JSON is of form:
> {"model": {"name": "IvyBridge", "props": {}}}
>
> qemuMonitorCPUModelInfoBoolPropAdd is used to add boolean properties to
> CPUModelInfo struct.
>
> qemuMonitorJSONGetCPUModelExpansion makes full use of conversions and
> propAdd in prep to support input of full cpu model in future.
I think this patch is doing too much at once and it's quite easy to get
lost between the FromJSON and ToJSON converters. Introducing each
converter in a separate patch would be better.
>
> Signed-off-by: Chris Venteicher <cventeic at redhat.com>
> ---
> src/qemu/qemu_monitor.c | 24 ++++++
> src/qemu/qemu_monitor.h | 5 ++
> src/qemu/qemu_monitor_json.c | 154 +++++++++++++++++++++++++----------
> 3 files changed, 138 insertions(+), 45 deletions(-)
>
> diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
> index 5effc74736..ddf4d96799 100644
> --- a/src/qemu/qemu_monitor.c
> +++ b/src/qemu/qemu_monitor.c
> @@ -3764,6 +3764,30 @@ qemuMonitorCPUModelInfoCopy(const qemuMonitorCPUModelInfo *orig)
> }
>
>
> +int
> +qemuMonitorCPUModelInfoBoolPropAdd(qemuMonitorCPUModelInfoPtr model,
> + const char *prop_name,
> + bool prop_value)
It looks a bit strange to have this wrapper for a code that would only
be in one place...
> +{
> + int ret = -1;
> + qemuMonitorCPUProperty prop;
Anyway, either put an empty line here or change this to
qemuMonitorCPUProperty prop = {
.type = QEMU_MONITOR_CPU_PROPERTY_BOOLEAN,
.value.boolean = prop_value
};
> + prop.type = QEMU_MONITOR_CPU_PROPERTY_BOOLEAN;
> + prop.value.boolean = prop_value;
> +
> + if (VIR_STRDUP(prop.name, prop_name) < 0)
> + goto cleanup;
> +
> + if (VIR_APPEND_ELEMENT(model->props, model->nprops, prop) < 0)
> + goto cleanup;
> +
> + ret = 0;
> +
> + cleanup:
> + VIR_FREE(prop.name);
> + return ret;
> +}
> +
> +
> int
> qemuMonitorGetCommands(qemuMonitorPtr mon,
> char ***commands)
...
> diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
> index 5a806f6c0e..abfa4155ee 100644
> --- a/src/qemu/qemu_monitor_json.c
> +++ b/src/qemu/qemu_monitor_json.c
> @@ -5505,6 +5505,101 @@ qemuMonitorJSONParseCPUModelProperty(const char *key,
...
> +static qemuMonitorCPUModelInfoPtr
> +qemuMonitorJSONBuildCPUModelInfoFromJSON(virJSONValuePtr cpu_model)
> +{
> + virJSONValuePtr cpu_props;
> + qemuMonitorCPUModelInfoPtr model = NULL;
> + qemuMonitorCPUModelInfoPtr ret = NULL;
> + char const *cpu_name;
> +
> + if (!(cpu_name = virJSONValueObjectGetString(cpu_model, "name"))) {
> + virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("Parsed JSON reply missing 'name'"));
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC(model) < 0)
> + goto cleanup;
> +
> + if (VIR_STRDUP(model->name, cpu_name) < 0)
> + goto cleanup;
> +
> + if ((cpu_props = virJSONValueObjectGetObject(cpu_model, "props"))) {
> + if (VIR_ALLOC_N(model->props,
> + virJSONValueObjectKeysNumber(cpu_props)) < 0)
> + goto cleanup;
> +
> + if (virJSONValueObjectForeachKeyValue(cpu_props,
> + qemuMonitorJSONParseCPUModelProperty,
> + model) < 0)
> + goto cleanup;
> + }
The patch looks like a refactoring, but it actually changes a bit more.
Previously "props" was required, while now it is silently ignored if
missing. Perhaps it's a valid change, but it should not be hidden inside
a refactoring patch.
> +
> + VIR_STEAL_PTR(ret, model);
> +
> + cleanup:
> + qemuMonitorCPUModelInfoFree(model);
> +
> + return ret;
> +}
> +
> int
> qemuMonitorJSONGetCPUModelExpansion(qemuMonitorPtr mon,
> qemuMonitorCPUModelExpansionType type,
...
Jirka
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