value_list: Ensure that the plugin name is contained in the converted metric.

diff --git a/src/utils/value_list/value_list.c b/src/utils/value_list/value_list.c
index 72703489d994e0480fd67810da80ec9c78dc4a76..16b7bb0336ac32a26756c3ef0f7895fb24ffd24c 100644 (file)
--- a/src/utils/value_list/value_list.c
+++ b/src/utils/value_list/value_list.c
@@ -408,6 +408,9 @@ plugin_value_list_to_metric_family(value_list_t const *vl, data_set_t const *ds,
     }
     status = status || metric_label_set(&m, name, vl->type_instance);
   }
+  if (strlen(vl->plugin_instance) == 0 && strlen(vl->type_instance) == 0) {
+    status = status || metric_label_set(&m, "plugin", vl->plugin);
+  }
 
   status = status || metric_family_metric_append(fam, m);
   if (status != 0) {