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qom: Factor out user_creatable_add_dict()

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The QMP handler qmp_object_add() and the implementation of --object in
qemu-storage-daemon can share most of the code. Currently,
qemu-storage-daemon calls qmp_object_add(), but this is not correct
because different visitors need to be used.

As a first step towards a fix, make qmp_object_add() a wrapper around a
new function user_creatable_add_dict() that can get an additional
parameter. The handling of "props" is only required for compatibility
and not required for the qemu-storage-daemon command line, so it stays
in qmp_object_add().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2020-04-16 17:04:20 +02:00
parent 6cf9413229
commit d6a5beeb2b
3 changed files with 40 additions and 23 deletions
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12
include/qom/object_interfaces.h
View file

@ -87,6 +87,18 @@ Object *user_creatable_add_type(const char *type, const char *id,
const QDict *qdict,
Visitor *v, Error **errp);
/**
* user_creatable_add_dict:
* @qdict: the object definition
* @errp: if an error occurs, a pointer to an area to store the error
*
* Create an instance of the user creatable object that is defined by
* @qdict. The object type is taken from the QDict key 'qom-type', its
* ID from the key 'id'. The remaining entries in @qdict are used to
* initialize the object properties.
*/
void user_creatable_add_dict(QDict *qdict, Error **errp);
/**
* user_creatable_add_opts:
* @opts: the object definition

27
qom/object_interfaces.c
View file

@ -6,6 +6,7 @@
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qjson.h"
#include "qapi/qmp/qstring.h"
#include "qapi/qobject-input-visitor.h"
#include "qom/object_interfaces.h"
#include "qemu/help_option.h"
#include "qemu/module.h"
@ -105,6 +106,32 @@ out:
return obj;
}
void user_creatable_add_dict(QDict *qdict, Error **errp)
{
Visitor *v;
Object *obj;
g_autofree char *type = NULL;
g_autofree char *id = NULL;
type = g_strdup(qdict_get_try_str(qdict, "qom-type"));
if (!type) {
error_setg(errp, QERR_MISSING_PARAMETER, "qom-type");
return;
}
qdict_del(qdict, "qom-type");
id = g_strdup(qdict_get_try_str(qdict, "id"));
if (!id) {
error_setg(errp, QERR_MISSING_PARAMETER, "id");
return;
}
qdict_del(qdict, "id");
v = qobject_input_visitor_new(QOBJECT(qdict));
obj = user_creatable_add_type(type, id, qdict, v, errp);
visit_free(v);
object_unref(obj);
}
Object *user_creatable_add_opts(QemuOpts *opts, Error **errp)
{

24
qom/qom-qmp-cmds.c
View file

@ -21,7 +21,6 @@
#include "qapi/qapi-commands-qom.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qerror.h"
#include "qapi/qobject-input-visitor.h"
#include "qemu/cutils.h"
#include "qom/object_interfaces.h"
#include "qom/qom-qobject.h"
@ -245,24 +244,6 @@ void qmp_object_add(QDict *qdict, QObject **ret_data, Error **errp)
{
QObject *props;
QDict *pdict;
Visitor *v;
Object *obj;
g_autofree char *type = NULL;
g_autofree char *id = NULL;
type = g_strdup(qdict_get_try_str(qdict, "qom-type"));
if (!type) {
error_setg(errp, QERR_MISSING_PARAMETER, "qom-type");
return;
}
qdict_del(qdict, "qom-type");
id = g_strdup(qdict_get_try_str(qdict, "id"));
if (!id) {
error_setg(errp, QERR_MISSING_PARAMETER, "id");
return;
}
qdict_del(qdict, "id");
props = qdict_get(qdict, "props");
if (props) {
@ -282,10 +263,7 @@ void qmp_object_add(QDict *qdict, QObject **ret_data, Error **errp)
qobject_unref(pdict);
}
v = qobject_input_visitor_new(QOBJECT(qdict));
obj = user_creatable_add_type(type, id, qdict, v, errp);
visit_free(v);
object_unref(obj);
user_creatable_add_dict(qdict, errp);
}
void qmp_object_del(const char *id, Error **errp)