+int inst_describe (graph_config_t *cfg, graph_instance_t *inst, /* {{{ */
+ char *buffer, size_t buffer_size)
+{
+ graph_ident_t *cfg_select;
+
+ if ((cfg == NULL) || (inst == NULL)
+ || (buffer == NULL) || (buffer_size < 2))
+ return (EINVAL);
+
+ cfg_select = graph_get_selector (cfg);
+ if (cfg_select == NULL)
+ {
+ fprintf (stderr, "inst_describe: graph_get_selector failed\n");
+ return (-1);
+ }
+
+ buffer[0] = 0;
+
+#define CHECK_FIELD(field) do { \
+ if (IS_ANY (ident_get_##field (cfg_select))) \
+ { \
+ if (buffer[0] != 0) \
+ strlcat (buffer, "/", buffer_size); \
+ strlcat (buffer, ident_get_##field (inst->select), buffer_size); \
+ } \
+} while (0)
+
+ CHECK_FIELD (host);
+ CHECK_FIELD (plugin);
+ CHECK_FIELD (plugin_instance);
+ CHECK_FIELD (type);
+ CHECK_FIELD (type_instance);
+
+#undef CHECK_FIELD
+
+ if (buffer[0] == 0)
+ strlcat (buffer, "default", buffer_size);
+
+ ident_destroy (cfg_select);
+
+ return (0);
+} /* }}} int inst_describe */
+