* Fixed: [State XML validation error when CLICON_MODULE_LIBRARY_RFC7895=true and ietf-yang-libra$

* Removed obsolete option: `CLICON_MODULE_LIBRARY_RFC7895'
  * Obsolete config options given in the confi file are considered an error
* Added section in CONTRIBUTING relating to optimzation
* Changed reset merge to implicit default values.
  * This avoids a potential overwriting of explicitly set default values in the existing config
* Adapted some code to [Make cligen_* functions const ](https://github.com/clicon/cligen/pull/83)
* Test: fixed test for * Fixed: [datamodel tree generated from basemodel tree is not proper when a list has more than one key and key is of enum type](https://github.com/clicon/clixon/issues/417)

CHANGELOG.md

@@ -66,8 +66,12 @@ Expected: beginning of 2023
 
 Users may have to change how they access the system
 
+* New `clixon-config@2022-12-01.yang` revision
+  * Removed obsolete option: `CLICON_MODULE_LIBRARY_RFC7895'
+* Obsolete config options given in the configuration file are considered an error
 * clixon-lib,yang
   * Moved all extended internal NETCONF attributes to the clicon-lib namespace
+    * These are: content, depth, username, autocommit, copystartup, transport, source-host, objectcreate, objectexisted.
   * The internal attributes are documented in https://clixon-docs.readthedocs.io/en/latest/netconf.html
 * With-defaults default retrieval mode has changed from `REPORT-ALL` to `EXPLICIT`
   * This means that all get operations without `with-defaults` parameter do no longer
@@ -111,6 +115,7 @@ Developers may need to change their code
 
 ### Corrected Bugs
 
+* Fixed: [State XML validation error when CLICON_MODULE_LIBRARY_RFC7895=true and ietf-yang-library@2019-01-04 is loaded](https://github.com/clicon/clixon/issues/408)
 * Fixed: [SNMP: snmpwalk is slow and can timeout #404 ](https://github.com/clicon/clixon/issues/404)
 * Fixed: [SNMP accepts only u32 & u64 #405](https://github.com/clicon/clixon/issues/405)
 * Fixed: [Yang leaves without smiv2:oid directive are not shown well in snmpwalk #398](https://github.com/clicon/clixon/issues/398)

CONTRIBUTING.md

@@ -4,8 +4,7 @@ The clixon project welcomes contributions from the community.
 
 ## Licensing
 
-A contribution must follow the [CLIXON
+A contribution must follow the [CLIXON licensing](https://github.com/clicon/clixon/blob/master/LICENSE.md)
-licensing](https://github.com/clicon/clixon/blob/master/LICENSE.md)
 with the dual licensing: either Apache License, Version 2.0 or
 GNU General Public License Version 3.
 
@@ -138,3 +137,16 @@ include:
 - [CI on other platforms](https://github.com/clicon/clixon/tree/master/test/cicd). Other platforms include x86-64, 32-bit i686, and armv71
 - [Coverage tests](https://app.codecov.io/gh/clicon/clixon)
 - [Fuzzing](https://github.com/clicon/clixon/tree/master/test/fuzz) Fuzzing are run occasionally using AFL
+
+## Optimization
+
+Optimizating Clixon code should be based on an observable improvement
+of measurements of cycles or memory usage.
+
+Usually, new clixon code starts out with functional compliance
+with appropriate regression tests.
+
+Therafter "non-functional" analysis, including performance tests can
+be made. Performance improvements should be based on specific usecase
+and actual measurement. The benefit of an optimization should
+be larger than a potential increase of complexity.

apps/backend/backend_startup.c

@@ -86,7 +86,7 @@ db_merge(clicon_handle h,
     cxobj *xt = NULL;
     
     /* Get data as xml from db1 */
-    if (xmldb_get0(h, (char*)db1, YB_MODULE, NULL, NULL, 0, 0, &xt, NULL, NULL) < 0)
+    if (xmldb_get0(h, (char*)db1, YB_MODULE, NULL, NULL, 1, WITHDEFAULTS_EXPLICIT, &xt, NULL, NULL) < 0)
         goto done;
     xml_name_set(xt, NETCONF_INPUT_CONFIG);
     /* Merge xml into db2. Without commit */

apps/cli/cli_generate.c

@@ -125,7 +125,7 @@ You can see which CLISPEC it generates via clixon_cli -D 2:
 static int
 cli_expand_var_generate(clicon_handle h, 
                         yang_stmt    *ys, 
-                        char         *cvtypestr,
+                        const char   *cvtypestr,
                         int           options,
                         uint8_t       fraction_digits,
                         int           pre,
@@ -207,7 +207,7 @@ yang2cli_helptext(cbuf *cb,
 static int
 yang2cli_var_identityref(yang_stmt *ys,
                          yang_stmt *ytype,
-                         char      *cvtypestr,
+                         const char *cvtypestr,
                          char      *helptext,
                          cbuf      *cb)
 {
@@ -426,7 +426,7 @@ yang2cli_var_sub(clicon_handle h,
     yang_stmt    *yi = NULL;
     int           i = 0;
     int           j;
-    char         *cvtypestr;
+    const char   *cvtypestr;
     char         *arg;
     size_t       len;
 
@@ -601,7 +601,7 @@ yang2cli_var_leafref(clicon_handle h,
     int   retval = -1;
     char *type;
     int   completionp;
-    char *cvtypestr;
+    const char *cvtypestr;
     int   ret;
     int   flag;
     int   regular_value = 1; /* if strict-expand==0 then regular-value is false */
@@ -674,7 +674,7 @@ yang2cli_var(clicon_handle h,
     cvec         *patterns = NULL;
     uint8_t       fraction_digits = 0;
     enum cv_type  cvtype;
-    char         *cvtypestr;
+    const char   *cvtypestr;
     int           options = 0;
     int           result;
     int           completionp;

lib/src/clixon_options.c

@@ -276,6 +276,7 @@ parse_configfile(clicon_handle  h,
     cxobj         *xt = NULL;
     cxobj         *xc = NULL;
     cxobj         *x = NULL;
+    yang_stmt     *y;
     char          *name;
     char          *body;
     clicon_hash_t *copt = clicon_options(h);
@@ -357,6 +358,17 @@ parse_configfile(clicon_handle  h,
             xe = NULL;
         }
     }
+    /* Check obsolete options before default expansion */
+    x = NULL;
+    while ((x = xml_child_each(xt, x, CX_ELMNT)) != NULL) {
+        if ((y = xml_spec(x)) != NULL){
+            if ((yang_find(y, Y_STATUS, "obsolete")) != NULL){
+                clicon_err(OE_CFG, 0, "Clixon option %s is obsolete but given in the config file which is considered an error",
+                           xml_name(x));
+                goto done;
+            }
+        }
+    }
     if (xml_default_recurse(xt, 0) < 0)
         goto done;      
     if ((ret = xml_yang_validate_add(h, xt, &xerr)) < 0)

lib/src/clixon_yang_module.c

@@ -194,7 +194,6 @@ yang_modules_revision(clicon_handle h)
  * @retval     0     OK
  * @retval    -1     Error
  * This assumes CLICON_YANG_LIBRARY is enabled
- * If also CLICON_MODULE_LIBRARY_RFC7895 is set, module-state is built according to RFC7895 instead
  * @see RFC8525 
  */
 int
@@ -226,15 +225,10 @@ yang_modules_state_build(clicon_handle    h,
         clicon_err(OE_YANG, 0, "%s yang namespace not found", module);
         goto done;
     }
-    if (clicon_option_bool(h, "CLICON_MODULE_LIBRARY_RFC7895")){
+    /* RFC 8525 */
-        cprintf(cb,"<modules-state xmlns=\"%s\">", yang_argument_get(yns));
-        cprintf(cb,"<module-set-id>%s</module-set-id>", msid);
-    }
-    else { /* RFC 8525 */
     cprintf(cb,"<yang-library xmlns=\"%s\">", yang_argument_get(yns));
     cprintf(cb,"<content-id>%s</content-id>", msid);
     cprintf(cb,"<module-set><name>default</name>");
-    }
     ymod = NULL;
     while ((ymod = yn_each(yspec, ymod)) != NULL) {
         if (yang_keyword_get(ymod) != Y_MODULE)
@@ -270,8 +264,6 @@ yang_modules_state_build(clicon_handle    h,
                     break;
                 }
             }
-            if (clicon_option_bool(h, "CLICON_MODULE_LIBRARY_RFC7895"))
-                cprintf(cb, "<conformance-type>implement</conformance-type>");
         }
         yinc = NULL;
         while ((yinc = yn_each(ymod, yinc)) != NULL) {
@@ -288,12 +280,7 @@ yang_modules_state_build(clicon_handle    h,
         }
         cprintf(cb,"</module>");
     }
-    if (clicon_option_bool(h, "CLICON_MODULE_LIBRARY_RFC7895")){
-        cprintf(cb,"</modules-state>");
-    }
-    else{
     cprintf(cb,"</module-set></yang-library>");
-    }
     retval = 0;
  done:
     return retval;

test/fuzz/backend/runfuzz.sh

@@ -41,7 +41,6 @@ cat <<EOF > $cfg
   <CLICON_BACKEND_PIDFILE>/usr/local/var/$APPNAME/$APPNAME.pidfile</CLICON_BACKEND_PIDFILE>
   <CLICON_XMLDB_DIR>/usr/local/var/$APPNAME</CLICON_XMLDB_DIR>
   <CLICON_STARTUP_MODE>init</CLICON_STARTUP_MODE>
-  <CLICON_MODULE_LIBRARY_RFC7895>false</CLICON_MODULE_LIBRARY_RFC7895>
 </clixon-config>
 EOF
 

test/fuzz/cli/runfuzz.sh

@@ -20,7 +20,6 @@ cat <<EOF > $cfg
   <CLICON_BACKEND_PIDFILE>/usr/local/var/$APPNAME/$APPNAME.pidfile</CLICON_BACKEND_PIDFILE>
   <CLICON_XMLDB_DIR>/usr/local/var/$APPNAME</CLICON_XMLDB_DIR>
   <CLICON_STARTUP_MODE>init</CLICON_STARTUP_MODE>
-  <CLICON_MODULE_LIBRARY_RFC7895>false</CLICON_MODULE_LIBRARY_RFC7895>
   <CLICON_CLISPEC_DIR>/usr/local/lib/$APPNAME/clispec</CLICON_CLISPEC_DIR>
   <CLICON_CLI_DIR>/usr/local/lib/$APPNAME/cli</CLICON_CLI_DIR>
   <CLICON_CLI_MODE>$APPNAME</CLICON_CLI_MODE>

test/fuzz/http1/runfuzz.sh

@@ -24,7 +24,6 @@ cat <<EOF > $cfg
   <CLICON_BACKEND_PIDFILE>/usr/local/var/hello.pidfile</CLICON_BACKEND_PIDFILE>
   <CLICON_XMLDB_DIR>/usr/local/var/hello</CLICON_XMLDB_DIR>
   <CLICON_STARTUP_MODE>init</CLICON_STARTUP_MODE>
-  <CLICON_MODULE_LIBRARY_RFC7895>false</CLICON_MODULE_LIBRARY_RFC7895>
   <CLICON_SOCK_GROUP>clicon</CLICON_SOCK_GROUP>
   <CLICON_NETCONF_HELLO_OPTIONAL>true</CLICON_NETCONF_HELLO_OPTIONAL>
   <CLICON_RESTCONF_USER>www-data</CLICON_RESTCONF_USER>

test/fuzz/netconf/runfuzz.sh

@@ -20,7 +20,6 @@ cat <<EOF > $cfg
   <CLICON_BACKEND_PIDFILE>/usr/local/var/$APPNAME/$APPNAME.pidfile</CLICON_BACKEND_PIDFILE>
   <CLICON_XMLDB_DIR>/usr/local/var/$APPNAME</CLICON_XMLDB_DIR>
   <CLICON_STARTUP_MODE>init</CLICON_STARTUP_MODE>
-  <CLICON_MODULE_LIBRARY_RFC7895>false</CLICON_MODULE_LIBRARY_RFC7895>
   <CLICON_CLISPEC_DIR>/usr/local/lib/$APPNAME/clispec</CLICON_CLISPEC_DIR>
   <CLICON_CLI_DIR>/usr/local/lib/$APPNAME/cli</CLICON_CLI_DIR>
   <CLICON_CLI_MODE>$APPNAME</CLICON_CLI_MODE>

test/fuzz/restconf/runfuzz.sh

@@ -39,7 +39,6 @@ cat <<EOF > $cfg
   <CLICON_BACKEND_PIDFILE>/usr/local/var/$APPNAME/$APPNAME.pidfile</CLICON_BACKEND_PIDFILE>
   <CLICON_XMLDB_DIR>/usr/local/var/$APPNAME</CLICON_XMLDB_DIR>
   <CLICON_STARTUP_MODE>init</CLICON_STARTUP_MODE>
-  <CLICON_MODULE_LIBRARY_RFC7895>false</CLICON_MODULE_LIBRARY_RFC7895>
   <restconf><enable>true</enable><auth-type>none</auth-type><socket><namespace>default</namespace><address>0.0.0.0</address><port>80</port><ssl>false</ssl></socket></restconf>
 </clixon-config>
 EOF

test/test_cli_multikey.sh

@@ -64,6 +64,19 @@ module $APPNAME{
             }
         }
       }
+      list z{
+         key "a b" ;
+         leaf a {
+            type enumeration{
+                enum v1;
+                enum v2;
+                enum v3;
+            }
+         }
+         leaf b {
+            type string;
+        }
+      }
    }
 }
 EOF
@@ -82,49 +95,55 @@ fi
 new "wait backend"
 wait_backend
 
-new "set 1 v1"
+new "ordered by system"
+new "set x 1 v1"
 expectpart "$($clixon_cli -1 -f $cfg set ex x a 1 b v1)" 0 ""
 
-new "set 1 v2"
+new "set x 1 v2"
 expectpart "$($clixon_cli -1 -f $cfg set ex x a 1 b v2)" 0 ""
 
-new "set 1 v3"
+new "set x 1 v3"
 expectpart "$($clixon_cli -1 -f $cfg set ex x a 1 b v3)" 0 ""
 
-new "set 2 v1"
+new "set x 2 v1"
 expectpart "$($clixon_cli -1 -f $cfg set ex x a 2 b v1)" 0 ""
 
-new "set 2 v2"
+new "set x 2 v2"
 expectpart "$($clixon_cli -1 -f $cfg set ex x a 2 b v2)" 0 ""
 
-new "set 2 v3"
+new "set x 2 v3"
 expectpart "$($clixon_cli -1 -f $cfg set ex x a 2 b v3)" 0 ""
 
-new "set 1 v2 again"
+new "set x 1 v2 again"
 expectpart "$($clixon_cli -1 -f $cfg set ex x a 1 b v2)" 0 ""
 
 new "show conf"
 expecteof_netconf "$clixon_netconf -qf $cfg" 0 "$DEFAULTHELLO" "<rpc $DEFAULTNS><get-config><source><candidate/></source></get-config></rpc>" "" "<rpc-reply $DEFAULTNS><data><ex xmlns=\"urn:example:clixon\"><x><a>1</a><b>v1</b></x><x><a>1</a><b>v2</b></x><x><a>1</a><b>v3</b></x><x><a>2</a><b>v1</b></x><x><a>2</a><b>v2</b></x><x><a>2</a><b>v3</b></x></ex></data></rpc-reply>"
 
-# ordered-by user
+new "ordered-by user"
-new "set 1 v1"
+new "set y 1 v1"
 expectpart "$($clixon_cli -1 -f $cfg set ex y a 1 b v1)" 0 ""
 
-new "set 2 v1"
+new "set y 2 v1"
 expectpart "$($clixon_cli -1 -f $cfg set ex y a 2 b v1)" 0 ""
 
-new "set 1 v2"
+new "set y 1 v2"
 expectpart "$($clixon_cli -1 -f $cfg set ex y a 1 b v2)" 0 ""
 
-new "set 1 v3"
+new "set y 1 v3"
 expectpart "$($clixon_cli -1 -f $cfg set ex y a 1 b v3)" 0 ""
 
-new "set 2 v2"
+new "set y 2 v2"
 expectpart "$($clixon_cli -1 -f $cfg set ex y a 2 b v2)" 0 ""
 
 new "show conf"
 expecteof_netconf "$clixon_netconf -qf $cfg" 0 "$DEFAULTHELLO" "<rpc $DEFAULTNS><get-config><source><candidate/></source></get-config></rpc>" "" "<rpc-reply $DEFAULTNS><data><ex xmlns=\"urn:example:clixon\"><x><a>1</a><b>v1</b></x><x><a>1</a><b>v2</b></x><x><a>1</a><b>v3</b></x><x><a>2</a><b>v1</b></x><x><a>2</a><b>v2</b></x><x><a>2</a><b>v3</b></x><y><a>1</a><b>v1</b></y><y><a>2</a><b>v1</b></y><y><a>1</a><b>v2</b></y><y><a>1</a><b>v3</b></y><y><a>2</a><b>v2</b></y></ex></data></rpc-reply>"
 
+new "switch keys"
+# see https://github.com/clicon/clixon/issues/417
+new "set z 1 v1"
+expectpart "$(echo "set ex z a v1 ?" | $clixon_cli -f $cfg 2> /dev/null)" 0 b --not-- "<cr>"
+
 if [ $BE -ne 0 ]; then
     new "Kill backend"
     # Check if premature kill

yang/clixon/clixon-config@2022-12-01.yang

@@ -48,8 +48,8 @@ module clixon-config {
 
     revision 2022-12-01 {
         description
-            "Added option:
+            "Removed (previosly marked) obsolete options:
-                    <nothing yet>
+                    CLICON_MODULE_LIBRARY_RFC7895
              Released in Clixon 6.1";
     }
     revision 2022-11-01 {
@@ -913,8 +913,7 @@ module clixon-config {
             description
                 "If set, tag datastores with RFC 8525 YANG Module Library 
                  info. When loaded at startup, a check is made if the system
-                 yang modules match.
+                 yang modules match.";
-                 See also CLICON_MODULE_LIBRARY_RFC7895";
         }
         leaf CLICON_XMLDB_UPGRADE_CHECKOLD {
             type boolean;
@@ -1059,22 +1058,11 @@ module clixon-config {
                  restconf GET.
                  The module state data is on the form:
                        <yang-library><module-set>...
-                 If CLICON_MODULE_LIBRARY_RFC7895 is set (as well), the module state uses RFC7895
                  instead where the modile state is on the form:
                        <modules-state>...
                  See also CLICON_XMLDB_MODSTATE where the module state info is used to tag datastores
                  with module information.";
         }
-        leaf CLICON_MODULE_LIBRARY_RFC7895 {
-            type boolean;
-            default false;
-            description
-                "Enable RFC 7895 YANG Module library support as state data, instead of RFC8525.
-                 Note CLICON_YANG_LIBRARY must be enabled for this to have effect.
-                 See also CLICON_YANG_LIBRARY and CLICON_MODULE_SET_ID";
-            status obsolete;
-        }
-
         leaf CLICON_MODULE_SET_ID {
             type string;
             default "0";