YANG schema mount, added configure option --enable-yang-schema-mount

CHANGELOG.md

@@ -50,7 +50,7 @@ Expected: beginning of 2023
     * Only presence containers can be mount-points
   * New plugin callback: `ca_yang_mount`
   * Standards: RFC 8528
-  * To enable: define `YANG_SCHEMA_MOUNT`
+  * To enable configure with `--enable-yang-schema-mount`
 * Netconf monitoring RFC 6022 , part 2
   * Datastores and sessions
     * Added clixon-specific transport identities: cli, snmp, netconf, restconf

apps/backend/backend_get.c

@@ -297,7 +297,7 @@ get_statedata(clicon_handle     h,
         if (ret == 0)
             goto fail;
     }
-#ifdef YANG_SCHEMA_MOUNT
+#ifdef CLIXON_YANG_SCHEMA_MOUNT
     if ((ret = yang_schema_mount_statedata(h, yspec, xpath, nsc, xret, &xerr)) < 0)
         goto done;
     if (ret == 0){

configure

@@ -636,6 +636,7 @@ CPP
 MIB_GENERATED_YANG_DIR
 YANG_STANDARD_DIR
 YANG_INSTALLDIR
+CLIXON_YANG_SCHEMA_MOUNT
 CLIXON_YANG_PATCH
 with_libxml2
 HAVE_HTTP1
@@ -721,6 +722,7 @@ enable_option_checking
 enable_debug
 with_cligen
 enable_yang_patch
+enable_yang_schema_mount
 enable_publish
 with_restconf
 enable_http1
@@ -1373,6 +1375,8 @@ Optional Features:
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
   --enable-debug          Build with debug symbols, default: no
   --enable-yang-patch     Enable YANG patch, RFC 8072, default: no
+  --enable-yang-schema-mount
+                          Enable YANG schema mount, RFC 8528, default: no
   --enable-publish        Enable publish of notification streams using SSE and
                           curl
   --disable-http1         Disable http1 for native restconf http/1, ie http/2
@@ -3402,6 +3406,7 @@ HAVE_HTTP1=false
 
 
 
+
 # Where Clixon installs its YANG specs
 
 # Examples require standard IETF YANGs. You need to provide these for example and tests
@@ -4668,6 +4673,30 @@ $as_echo "#define CLIXON_YANG_PATCH 1" >>confdefs.h
 
 fi
 
+# Enable/disable YANG schema mount RFC 8528
+# Check whether --enable-yang-schema-mount was given.
+if test "${enable_yang_schema_mount+set}" = set; then :
+  enableval=$enable_yang_schema_mount;
+	  if test "$enableval" = no; then
+	      enable_yang_schema_mount=no
+	  else
+	      enable_yang_schema_mount=yes
+          fi
+
+else
+   enable_yang_schema_mount=no
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: enable-yang-schema-mount is ${enable_yang_schema_mount}" >&5
+$as_echo "enable-yang-schema-mount is ${enable_yang_schema_mount}" >&6; }
+if test "${enable_yang_schema_mount}" = "yes"; then
+   CLIXON_YANG_SCHEMA_MOUNT=1
+
+$as_echo "#define CLIXON_YANG_SCHEMA_MOUNT 1" >>confdefs.h
+
+fi
+
 # Experimental: Curl publish notification stream to eg Nginx nchan.
 # Check whether --enable-publish was given.
 if test "${enable_publish+set}" = set; then :

configure.ac

@@ -120,6 +120,7 @@ AC_SUBST(HAVE_LIBNGHTTP2,false) # consider using neutral constant such as with-h
 AC_SUBST(HAVE_HTTP1,false)
 AC_SUBST(with_libxml2)  
 AC_SUBST(CLIXON_YANG_PATCH)
+AC_SUBST(CLIXON_YANG_SCHEMA_MOUNT)
 # Where Clixon installs its YANG specs
 AC_SUBST(YANG_INSTALLDIR) 
 # Examples require standard IETF YANGs. You need to provide these for example and tests
@@ -195,6 +196,22 @@ if test "${enable_yang_patch}" = "yes"; then
    AC_DEFINE(CLIXON_YANG_PATCH, 1, [Enable YANG patch, RFC 8072])
 fi
 
+# Enable/disable YANG schema mount RFC 8528
+AC_ARG_ENABLE(yang-schema-mount, AS_HELP_STRING([--enable-yang-schema-mount],[Enable YANG schema mount, RFC 8528, default: no]),[
+	  if test "$enableval" = no; then
+	      enable_yang_schema_mount=no
+	  else	      
+	      enable_yang_schema_mount=yes
+          fi
+        ],
+	[ enable_yang_schema_mount=no])
+
+AC_MSG_RESULT(enable-yang-schema-mount is ${enable_yang_schema_mount})
+if test "${enable_yang_schema_mount}" = "yes"; then
+   CLIXON_YANG_SCHEMA_MOUNT=1
+   AC_DEFINE(CLIXON_YANG_SCHEMA_MOUNT, 1, [Enable YANG schema mount, RFC 8528])
+fi
+
 # Experimental: Curl publish notification stream to eg Nginx nchan. 
 AC_ARG_ENABLE(publish, AS_HELP_STRING([--enable-publish],[Enable publish of notification streams using SSE and curl]),[
 	  if test "$enableval" = no; then

include/clixon_config.h.in

@@ -21,6 +21,9 @@
 /* Enable YANG patch, RFC 8072 */
 #undef CLIXON_YANG_PATCH
 
+/* Enable YANG schema mount, RFC 8528 */
+#undef CLIXON_YANG_SCHEMA_MOUNT
+
 /* Define to 1 if you have the `alphasort' function. */
 #undef HAVE_ALPHASORT
 

include/clixon_custom.h

@@ -191,9 +191,3 @@
  * To keep the previous behavior (as in 6.0) set this option with #define
  */
 #undef NETCONF_DEFAULT_RETRIEVAL_REPORT_ALL
-
-/*! RFC 8528 YANG schema mount
- * Experimental
- * See also test/test_yang_schema_mount.sh
- */
-#undef YANG_SCHEMA_MOUNT

lib/src/clixon_datastore_write.c

@@ -856,7 +856,7 @@ text_modify(clicon_handle       h,
                 x1cname = xml_name(x1c);
                 /* Get yang spec of the child by child matching */
                 if ((yc = yang_find_datanode(y0, x1cname)) == NULL){
-#ifdef YANG_SCHEMA_MOUNT
+#ifdef CLIXON_YANG_SCHEMA_MOUNT
                     yc = xml_spec(x1c);
 #endif
                     if (yc == NULL){
@@ -904,7 +904,7 @@ text_modify(clicon_handle       h,
                 x0c = x0vec[i++];
                 x1cname = xml_name(x1c);
                 if ((yc = yang_find_datanode(y0, x1cname)) == NULL){
-#ifdef YANG_SCHEMA_MOUNT
+#ifdef CLIXON_YANG_SCHEMA_MOUNT
                     yc = xml_spec(x1c);
 #endif
                 }

lib/src/clixon_validate.c

@@ -1008,7 +1008,7 @@ xml_yang_validate_add(clicon_handle h,
     cg_var      *cv0;
     enum cv_type cvtype;
     
-#ifdef YANG_SCHEMA_MOUNT
+#ifdef CLIXON_YANG_SCHEMA_MOUNT
     /* Do not validate beyond mountpoints */
     if ((ret = xml_yang_mount_get(xt, NULL)) < 0)
         goto done;
@@ -1225,7 +1225,7 @@ xml_yang_validate_all(clicon_handle h,
     cvec      *nsc = NULL;
     int        hit = 0;
 
-#ifdef YANG_SCHEMA_MOUNT
+#ifdef CLIXON_YANG_SCHEMA_MOUNT
     /* Do not validate beyond mountpoints */
     if ((ret = xml_yang_mount_get(xt, NULL)) < 0)
         goto done;

lib/src/clixon_xml_bind.c

@@ -453,7 +453,7 @@ xml_bind_yang0_opt(clicon_handle h,
         goto ok;
     strip_body_objects(xt);
     ybc = YB_PARENT;
-#ifdef YANG_SCHEMA_MOUNT // Maybe in populate?
+#ifdef CLIXON_YANG_SCHEMA_MOUNT
     yspec1 = NULL;
     if ((ret = xml_yang_mount_get(xt, &yspec1)) < 0)
         goto done;

lib/src/clixon_yang.c

@@ -661,7 +661,7 @@ ys_free1(yang_stmt *ys,
         cv_free(cv);
     }
     if (ys->ys_cvec){
-#ifdef YANG_SCHEMA_MOUNT
+#ifdef CLIXON_YANG_SCHEMA_MOUNT
         /* Schema mount uses cvec in unknown to keep track of all yspecs
          * Freed here once.
          */

test/test_yang_schema_mount.sh

@@ -5,10 +5,10 @@
 # Magic line must be first in script (see README.md)
 s="$_" ; . ./lib.sh || if [ "$s" = $0 ]; then exit 0; else return 0; fi
 
-if true; then # enable YANG_SCHEMA_MOUNT
-    echo "...skipped: YANG_SCHEMA_MOUNT NYI"
+if [ -z "${CLIXON_YANG_SCHEMA_MOUNT}" ]; then
+    echo "...skipped. To enable configure with: --enable-yang-schema-mount"
     rm -rf $dir
-    if [ -z "${CLIXON_YANG_PATCH}" -a "$s" = $0 ]; then exit 0; else return 0; fi
+    if [ "$s" = $0 ]; then exit 0; else return 0; fi # skip
 fi
 
 APPNAME=example