Gettting this issue: Invalid empty identityref value., where I don't see any identityref

[rgaura]

Hello Sir

I am using following versions of sysrepo and netopeer2-server: libsysrepo v2.1.64 (SO v7.6.6) netopeer2-server 2.1.23

While working on o-ran-dhcp.yang (standard 5G yang used for DHCP configuration - attached for your immediate reference). I got the following error:

[ERR] Invalid empty identityref value. (Schema location /o-ran-dhcp:dhcp/interfaces/dhcpv4/netconf-clients/optional-port, data location /o-ran-dhcp:dhcp/interfaces[interface='eth0']/dhcpv4/netconf-clients[client='192.168.12.13']/optional-port.)

The strange thing is I am only getting error for the two port objects (port-number and optional-port). Rest all works well. I looked into yang but yang does not have any identityref linked to both of these port object. I uninstalled and installed yang just in case if there was any corruption of fields.

The only leafref/identityref was because of interfaces that i have already provided as shown below and I don't see any error in that case.

I am trying to add the stuff like this:

sprintf (buff,"/o-ran-dhcp:dhcp/interfaces[interface = \"%s\"]/dhcpv4/netconf-clients[client = \"%s\"]/optional-port", IntfName, cli);
    value.type = SR_UINT16_T;
    value.data.uint16_val = port;
    rc =sr_set_item(session, (void *)&buff, &val, 0);
    if (rc != SR_ERR_OK) {
        LOGGER(ERR,"MODULE","\n ========== INSERTING data item into db failed: ==========\n\n");
        return (retval=0);
    }

Then, why this identifyref issue? I am out of clues now, so writing to you, please suggest.

Thanks rgaura

o-ran-dhcp.yang.txt

[michalvasko]

I do not think I can help you, it makes no sense that an identityref is mentioned while the node is an uint16. I can only suggest trying to update everything, it may help.

[jamespark76]

Please refer to ietf-interfaces.yang for information regarding 'if:interface-ref'. 'if' is the prefix for ietf-interfaces.yang, and 'interface-ref' refers to "/if:interfaces/if:interface/if:name". This means that there is a dependency on 'interface' in o-ran-dhcp.yang with 'interfaces/interface/name' in ietf-interfaces.yang.

You need to fill out the ietf-interfaces.yang datastore before accessing o-ran-dhcp.yang.

module ietf-interfaces {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-interfaces";
  prefix if;

...

  /*
   * Typedefs
   */

  typedef interface-ref {
    type leafref {
      path "/if:interfaces/if:interface/if:name";
    }
    description
      "This type is used by data models that need to reference
       interfaces.";
  }
...

[michalvasko]

That has nothing to do with identityref, it is just a leafref, something completely different.

[rgaura]

Hello James

Anyway, I have already taken care of that, I mentioned that in my msg, but forgot to paste the XML.:

"The only leafref/identityref was because of interfaces that i have already provided as shown below and I don't see any error in that case."

<interfaces
     xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces"
     xmlns:ianaift="urn:ietf:params:xml:ns:yang:iana-if-type">
  <interface>
    <name>eth0</name>
    <type>ianaift:ethernetCsmacd</type>
    <enabled>true</enabled>
  </interface>
</interfaces>

[michalvasko]

Which function exactly generated the error with the empty identityref?

[rgaura]

Michal By function you mean netopeer2 API or which yang object. Didn't get clear idea by "function". Please clarify more.

[michalvasko]

[ERR] Invalid empty identityref value. (Schema location /o-ran-dhcp:dhcp/interfaces/dhcpv4/netconf-clients/optional-port, data location /o-ran-dhcp:dhcp/interfaces[interface='eth0']/dhcpv4/netconf-clients[client='192.168.12.13']/optional-port.)

This error must have been generated by a function, I mean sysrepo or libyang API function, which one exactly, what parameters did you use for it?

[rgaura]

Hello Michal

Got your point.

API Used: rc =sr_set_item(session_op,(void *)&buff, &value, 0);

session_op: session to operational datastore (since all the yang objects are RO)

buff: buffer for constructed xpath: sprintf (buff,"/o-ran-dhcp:dhcp/interfaces[interface = \"%s\"]/dhcpv4/netconf-clients[client = \"%s\"]/optional-port", IntfName, cli);

value: Since it is sr_set_item, used sr_val_t: value.type = SR_UINT16_T; value.data.uint16_val = port

I am pasting GDB output, if it helps

1843        sprintf (buff,"/o-ran-dhcp:dhcp/interfaces[interface = \"%s\"]/dhcpv4/netconf-clients[client = \"%s\"]/optional-port", IntfName, cli);
(gdb)
1844        value.type = SR_UINT16_T;
(gdb)
1845        value.data.uint16_val = port;
(gdb) p buff
$1 = "/o-ran-dhcp:dhcp/interfaces[interface = \"eth0\"]/dhcpv4/netconf-clients[client = \"192.168.12.13\"]/optional-port", '\000' <repeats 143 times>
(gdb)
$2 = "/o-ran-dhcp:dhcp/interfaces[interface = \"eth0\"]/dhcpv4/netconf-clients[client = \"192.168.12.13\"]/optional-port", '\000' <repeats 143 times>
(gdb) n
1846        rc =sr_set_item(session_op,(void *)&buff, &value, 0);
(gdb)
[ERR] Invalid empty identityref value. (Schema location /o-ran-dhcp:dhcp/interfaces/dhcpv4/netconf-clients/optional-port, data location /o-ran-dhcp:dhcp/interfaces[interface='eth0']/dhcpv4/netconf-clients[client='192.168.12.13']/optional-port.)
[ERR] Edit was discarded.
1847        if (rc != SR_ERR_OK) {
(gdb)
1848            LOGGER(ERR,"MODULE","\n ========== INSERTING data item into db failed: ==========\n\n");
 ========== INSERTING data item into db failed: ==========

1849            return (retval=0);
(gdb) p value
$3 = {xpath = 0x58 <Address 0x58 out of bounds>, type = SR_UINT16_T, dflt = 32767, origin = 0x4143d8 "", data = {
    binary_val = 0x7ffff5b67968 <_int_malloc+2712> "\303\017\204\337\002", bits_val = 0x7ffff5b67968 <_int_malloc+2712> "\303\017\204\337\002",
    bool_val = -172590744, decimal64_val = 6.9533472807192643e-310, enum_val = 0x7ffff5b67968 <_int_malloc+2712> "\303\017\204\337\002",
    identityref_val = 0x7ffff5b67968 <_int_malloc+2712> "\303\017\204\337\002", instanceid_val = 0x7ffff5b67968 <_int_malloc+2712> "\303\017\204\337\002",
    int8_val = 104 'h', int16_val = 31080, int32_val = -172590744, int64_val = 140737315764584,
    string_val = 0x7ffff5b67968 <_int_malloc+2712> "\303\017\204\337\002", uint8_val = 104 'h', uint16_val = 31080, uint32_val = 4122376552,
    uint64_val = 140737315764584, anyxml_val = 0x7ffff5b67968 <_int_malloc+2712> "\303\017\204\337\002",
    anydata_val = 0x7ffff5b67968 <_int_malloc+2712> "\303\017\204\337\002"}}
(gdb) p port
$4 = 31080
(gdb)

[michalvasko]

I have failed to reproduce or understand this issue completely, please use gdb and add breakpoint to ly_vlog, when reached, please print the stack trace and post it here.