[dbus PATCH v2 2/9] Implement NodeGetFreeMemory method for Connect Interface

[Katerina Koukiou <kkoukiou@xxxxxxxxxx>]

Signed-off-by: Katerina Koukiou <kkoukiou@xxxxxxxxxx>
---
 data/org.libvirt.Connect.xml |  5 +++++
 src/connect.c                | 24 ++++++++++++++++++++++++
 tests/test_connect.py        |  4 ++++
 3 files changed, 33 insertions(+)

diff --git a/data/org.libvirt.Connect.xml b/data/org.libvirt.Connect.xml
index e5c18bd..c642aff 100644
--- a/data/org.libvirt.Connect.xml
+++ b/data/org.libvirt.Connect.xml
@@ -173,6 +173,11 @@
       <arg name="flags" type="u" direction="in"/>
       <arg name="cpuStats" type="a{st}" direction="out"/>
     </method>
+    <method name="NodeGetFreeMemory">
+      <annotation name="org.gtk.GDBus.DocString"
+        value="See https://libvirt.org/html/libvirt-libvirt-host.html#virNodeGetFreeMemory"/>
+      <arg name="freemem" type="t" direction="out"/>
+    </method>
     <signal name="DomainEvent">
       <annotation name="org.gtk.GDBus.DocString"
         value="See https://libvirt.org/html/libvirt-libvirt-domain.html#virConnectDomainEventCallback"/>
diff --git a/src/connect.c b/src/connect.c
index 6d0243f..b161925 100644
--- a/src/connect.c
+++ b/src/connect.c
@@ -882,6 +882,29 @@ virtDBusConnectNodeGetCPUStats(GVariant *inArgs,
     *outArgs = g_variant_new_tuple(&gret, 1);
 }
 
+static void
+virtDBusConnectNodeGetFreeMemory(GVariant *inArgs G_GNUC_UNUSED,
+                                 GUnixFDList *inFDs G_GNUC_UNUSED,
+                                 const gchar *objectPath G_GNUC_UNUSED,
+                                 gpointer userData,
+                                 GVariant **outArgs,
+                                 GUnixFDList **outFDs G_GNUC_UNUSED,
+                                 GError **error)
+
+{
+    virtDBusConnect *connect = userData;
+    guint64 freemem;
+
+    if (!virtDBusConnectOpen(connect, error))
+        return;
+
+    freemem = virNodeGetFreeMemory(connect->connection);
+    if (freemem == 0)
+        return virtDBusUtilSetLastVirtError(error);
+
+    *outArgs = g_variant_new("(t)", freemem);
+}
+
 static virtDBusGDBusPropertyTable virtDBusConnectPropertyTable[] = {
     { "Encrypted", virtDBusConnectGetEncrypted, NULL },
     { "Hostname", virtDBusConnectGetHostname, NULL },
@@ -914,6 +937,7 @@ static virtDBusGDBusMethodTable virtDBusConnectMethodTable[] = {
     { "NetworkLookupByName", virtDBusConnectNetworkLookupByName },
     { "NetworkLookupByUUID", virtDBusConnectNetworkLookupByUUID },
     { "NodeGetCPUStats", virtDBusConnectNodeGetCPUStats },
+    { "NodeGetFreeMemory", virtDBusConnectNodeGetFreeMemory },
     { 0 }
 };
 
diff --git a/tests/test_connect.py b/tests/test_connect.py
index 1383cc0..7b9ad0d 100755
--- a/tests/test_connect.py
+++ b/tests/test_connect.py
@@ -160,6 +160,10 @@ class TestConnect(libvirttest.BaseTestClass):
         stats = self.connect.NodeGetCPUStats(0, 0)
         assert isinstance(stats, dbus.Dictionary)
 
+    def test_connect_node_get_free_memory(self):
+        free_mem = self.connect.NodeGetFreeMemory()
+        assert isinstance(free_mem, dbus.UInt64)
+
 
 if __name__ == '__main__':
     libvirttest.run()
-- 
2.15.0

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