Added CLICON_STATE_PATH_KLUDGE

apps/backend/backend_plugin.c

@@ -248,6 +248,21 @@ clixon_plugin_statedata_all(clicon_handle    h,
 	if (debug)
 	    clicon_log_xml(LOG_DEBUG, x, "%s STATE:", __FUNCTION__);
 #endif
+#ifdef USE_STATE_PATH_KLUDGE
+	/* This kludge skips all yang binding and validation of paths begining with a 
+	 * specific prefix
+	 * Note that there are many problems with this kludge. 
+	 */
+	{
+	    char *kpath;
+	    if (xpath &&
+		(kpath = clicon_option_str(h, "CLICON_STATE_PATH_KLUDGE")) != NULL){
+		if (strncmp(xpath, kpath, strlen(kpath)) == 0)
+		    ;
+	    }
+	    else {
+#endif /* USE_STATE_PATH_KLUDGE */
+
 	/* XXX: ret == 0 invalid yang binding should be handled as internal error */
 	if (xml_bind_yang(x, YB_MODULE, yspec, NULL) < 0)
 	    goto done;
@@ -255,6 +270,10 @@ clixon_plugin_statedata_all(clicon_handle    h,
 	    goto done;
 	if (xml_default_recurse(x) < 0)
 	    goto done;
+#ifdef USE_STATE_PATH_KLUDGE
+	    }
+	}
+#endif
 	if ((ret = netconf_trymerge(x, yspec, xret)) < 0)
 	    goto done;
 	if (ret == 0)

include/clixon_custom.h

@@ -118,10 +118,19 @@
 /*! Clixon 4.5 optimizing experiments for sorting yang-bound XML trees
  * Primarily for large lists
  */
-#undef OPTIMIZE_45_SORT
+#define OPTIMIZE_45_SORT
 
 /*! Use cligen 4.4 instead of master / cligen 4.5.pre
  * Temporary fix
  */
 #undef USE_CLIGEN44
 
+/*! Check runtime CLICON_STATE_PATH_KLUDGE option
+ * For get state commands, if the select xpath is equal (or its beginning)
+ * is equal to the path in this option, then yang binding, sorting, default 
+ * values is skipped.
+ * This is a temporary option which will go away in future releases, therefore 
+ * marked as obsolete.";
+ */
+#define USE_STATE_PATH_KLUDGE
+

test/test_perf_state_only.sh

@@ -48,6 +48,8 @@ cat <<EOF > $cfg
 </clixon-config>
 EOF
 
+# Note, there is a commented default statement below. It may be useful, bit for a
+# clean performance setup, adding default values may be a fringe case?
 cat <<EOF > $fyang
 module $APPNAME{
   yang-version 1.1;
@@ -71,7 +73,7 @@ module $APPNAME{
           }
           leaf enabled {
             type boolean;
-            default true; 
+/*            default true;  */
           }
           leaf status {
             type string;

yang/clixon/clixon-config@2020-02-22.yang

@@ -719,5 +719,17 @@ module clixon-config {
                          data to store before dropping. 0 means no retention";
 
 	}
+	leaf CLICON_STATE_PATH_KLUDGE {
+	    type string;
+	    status obsolete;
+	    description
+		"For get state commands, if the select xpath is equal (or its beginning)
+                 is equal to the path in this option, then yang binding, sorting, default 
+                 values is skipped. 
+                 Note you need to set USE_STATE_PATH_KLUDGE compile option to use this.
+                 This is a temporary option which will go away in future releases, therefore 
+                 marked as obsolete.";
+	}
+	
     }
 }