[Qemu-devel] [RFC 3/3] qemu-ga: add support for periodic command runner

[Tomáš Golembiovský]

This adds a support for periodicaly triggering arbitrary command
reporting its output.

Signed-off-by: Tomáš Golembiovský <address@hidden>
---
 qga/main.c          | 26 ++++++++++++++++++++++++++
 qga/qapi-event.json | 17 +++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/qga/main.c b/qga/main.c
index a9586e7513..612a6646e4 100644
--- a/qga/main.c
+++ b/qga/main.c
@@ -715,6 +715,32 @@ static gboolean monitoring_cb(gpointer data)
             g_warning("error sending event: %s", strerror(-ret));
         }
     }
+
+    /* Run arbitrary command */
+    const char *command = "guest-get-users";
+    QDict *args = qdict_new();
+
+    QmpCommand *cmd = qmp_find_command(&ga_commands, command);
+    g_assert(cmd);
+    g_assert(cmd->fn);
+    QObject *ret;
+    qmp_marshal_guest_get_users(args, &ret, &err);
+    QDECREF(args);
+    if (err) {
+        goto fail;
+    }
+    qapi_event_send_guest_monitor_command(command, ret, &err);
+
+    if (queued_event) {
+        int ret;
+        ret = send_response(s, QOBJECT(queued_event));
+        QDECREF(queued_event);
+        queued_event = NULL;
+        if (ret < 0) {
+            g_warning("error sending event: %s", strerror(-ret));
+        }
+    }
+
     goto ok;
 
 fail:
diff --git a/qga/qapi-event.json b/qga/qapi-event.json
index 3d48ddb214..e31ea0f0e9 100644
--- a/qga/qapi-event.json
+++ b/qga/qapi-event.json
@@ -16,3 +16,20 @@
 #
 ##
 { 'event': 'GUEST_HEARTBEAT', 'data': { 'free-ram': 'size' } }
+
+##
+# @GUEST_MONITOR_COMMAND:
+#
+# Run periodicaly arbitrary command and return it's result.
+#
+# @command: The executed command.
+# @return: Returned value.
+#
+# Since: 2.10
+#
+# Example:
+#
+# TODO
+#
+##
+{ 'event': 'GUEST_MONITOR_COMMAND', 'data': { 'command': 'str', 'return': 
'any' } }
-- 
2.13.1