On Mon, Feb 19, 2018 at 01:09:27PM +0000, Daniel P. Berrangé wrote:
> On Wed, Feb 07, 2018 at 05:49:30PM +0300, Edgar Kaziakhmedov wrote:
> > Predefine hints for all parameters possible to avoid wrong type
> > convert.
> > 
> > Signed-off-by: Edgar Kaziakhmedov <edgar.kaziakhme...@virtuozzo.com>
> > ---
> >  libvirt-override.c | 128 
> > +++++++++++++++++++++++++++++++++++++++++++++++++++--
> >  1 file changed, 124 insertions(+), 4 deletions(-)
> 
> Thanks, looks good, so I've pushed this now.

Actually I wanted to suggest to use static variables to store the hints:


diff --git a/libvirt-override.c b/libvirt-override.c
index 78a7f08..c41c03c 100644
--- a/libvirt-override.c
+++ b/libvirt-override.c
@@ -7739,6 +7739,25 @@ libvirt_virDomainMigrateGetMaxDowntime(PyObject *self 
ATTRIBUT
E_UNUSED,
 #endif /* LIBVIR_CHECK_VERSION(3, 7, 0) */

 #if LIBVIR_CHECK_VERSION(1, 1, 0)
+
+static virPyTypedParamsHint virDomainMigrate3Params[] = {
+    { VIR_MIGRATE_PARAM_URI, VIR_TYPED_PARAM_STRING },
+    { VIR_MIGRATE_PARAM_DEST_NAME, VIR_TYPED_PARAM_STRING },
+    { VIR_MIGRATE_PARAM_DEST_XML, VIR_TYPED_PARAM_STRING },
+    { VIR_MIGRATE_PARAM_GRAPHICS_URI, VIR_TYPED_PARAM_STRING },
+    { VIR_MIGRATE_PARAM_BANDWIDTH, VIR_TYPED_PARAM_ULLONG },
+    { VIR_MIGRATE_PARAM_LISTEN_ADDRESS, VIR_TYPED_PARAM_STRING },
+    { VIR_MIGRATE_PARAM_DISKS_PORT, VIR_TYPED_PARAM_INT },
+    { VIR_MIGRATE_PARAM_COMPRESSION, VIR_TYPED_PARAM_STRING },
+    { VIR_MIGRATE_PARAM_COMPRESSION_MT_DTHREADS, VIR_TYPED_PARAM_INT },
+    { VIR_MIGRATE_PARAM_COMPRESSION_MT_LEVEL, VIR_TYPED_PARAM_INT },
+    { VIR_MIGRATE_PARAM_COMPRESSION_MT_THREADS, VIR_TYPED_PARAM_INT },
+    { VIR_MIGRATE_PARAM_COMPRESSION_XBZRLE_CACHE, VIR_TYPED_PARAM_ULLONG },
+    { VIR_MIGRATE_PARAM_PERSIST_XML, VIR_TYPED_PARAM_STRING },
+    { VIR_MIGRATE_PARAM_AUTO_CONVERGE_INITIAL, VIR_TYPED_PARAM_INT },
+    { VIR_MIGRATE_PARAM_AUTO_CONVERGE_INCREMENT, VIR_TYPED_PARAM_INT },
+};
+
 static PyObject *
 libvirt_virDomainMigrate3(PyObject *self ATTRIBUTE_UNUSED,
                           PyObject *args)
@@ -7760,7 +7779,9 @@ libvirt_virDomainMigrate3(PyObject *self ATTRIBUTE_UNUSED,
     domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
     dconn = (virConnectPtr) PyvirConnect_Get(pyobj_dconn);

-    if (virPyDictToTypedParams(dict, &params, &nparams, NULL, 0) < 0)
+    if (virPyDictToTypedParams(dict, &params, &nparams,
+                               virDomainMigrate3Params,
+                               VIR_N_ELEMENTS(virDomainMigrate3Params)) < 0)
         return NULL;

     LIBVIRT_BEGIN_ALLOW_THREADS;
diff --git a/libvirt-utils.h b/libvirt-utils.h
index 779fd56..0af1e62 100644
--- a/libvirt-utils.h
+++ b/libvirt-utils.h
@@ -146,6 +146,8 @@ void virFree(void *ptrptr) ATTRIBUTE_NONNULL(1);
 # endif


+#define VIR_N_ELEMENTS(array) (sizeof(array) / sizeof(*(array)))
+
 /* The two-statement sequence "Py_INCREF(Py_None); return Py_None;"
    is so common that we encapsulate it here.  Now, each use is simply
    return VIR_PY_NONE;  */


Which IMHO looks better.

Pavel

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