Need help for a 'derived-from-or-self' validation

[prmanna]

Hi Team,

We are using the yanglint validation for the yang with json example.

For this new change (ie. union)
https://github.com/ietf-ivy-wg/network-inventory-yang/blob/06d546603dbd58f1d6dccb371aa58204bf8a6399/ietf-network-inventory.yang#L334

the yanglint is giving error in this following validation for the example above.
https://github.com/ietf-ivy-wg/network-inventory-yang/blob/06d546603dbd58f1d6dccb371aa58204bf8a6399/ietf-network-inventory.yang#L520

Need your input here.
Thanks,
Prasenjit

[michalvasko]

Can you please post the exact command you are executing? I have tried validating the data you posted but they contain obvious typos (such as transceivers-module identityref instead of transceiver-module) and so I am getting lots of different errors than the one you mentioned.

[prmanna]

./yanglint --path=/prmanna/ietf/libyang/build/yangdb/ -f json tests/ietf-network-inventory.yang yangdb/iana-hardware.yang tests/ports-transceivers-breakouts-examples.json

[michalvasko]

> yanglint -f json ./ietf-network-inventory.yang /home/vasko/Downloads/yang/standard/ietf/RFC/[email protected] ./ports-transceivers-breakouts-examples.json 
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-1'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-1']/class)
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-1'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-2'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-3'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-3']/class)
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-3'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-4'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-4']/class)
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-4'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-5'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-5']/class)
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-5'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-6'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6']/class)
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6'])
libyang err : Node "transceivers-module-specific-info" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-7'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7']/class)
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7'])
libyang err : Node "transceivers-module-specific-info" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-1'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-3'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-4'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-5'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7'])
YANGLINT[E]: Failed to parse input data file "./ports-transceivers-breakouts-examples.json".

[prmanna]

sorry for responding late.

Attached all files for the following yangint. Need your help for error.
suspect is in the 'union' in line 335 (of ietf-network-inventory.yang). what could be wrong here?

./yanglint --path=/ws/prmanna-bgl/ietf/libyang/build/yangdb/ -f json tests/ietf-network-inventory.yang yangdb/iana-hardware.yang tests/ports-transceivers-breakouts-examples.json

libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-1'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-1'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-2'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-3'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-3'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-4'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-4'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-5'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-5'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-6'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-7'])
libyang err : Expecting JSON name/object but container "parent-component-ref" is represented in input data as name/string. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7'])
libyang err : When condition "derived-from-or-self(../nwi:class,
'nwi:transceivers-module')" not satisfied. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7']/transceivers-module-specific-info)
libyang err : When condition "derived-from-or-self(../nwi:class,
'nwi:transceivers-module')" not satisfied. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6']/transceivers-module-specific-info)
YANGLINT[E]: Failed to parse input data file "tests/ports-transceivers-breakouts-examples.json".

Note: git dont allow to attach .yang file, hence added txt extention.
ietf-network-inventory.yang.txt
iana-hardware.yang.txt
ports-transceivers-breakouts-examples.json

[michalvasko]

Using the current libyang devel:

./yanglint -f json /home/vasko/Documents/test/ietf-network-inventory.yang /home/vasko/Documents/test/iana-hardware.yang /home/vasko/Documents/test/ports-transceivers-breakouts-examples.json
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-1'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-1']/class)
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-1'])
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-2'])
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-3'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-3']/class)
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-3'])
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-4'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-4']/class)
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-4'])
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-5'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-5']/class)
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-5'])
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-6'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6']/class)
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6'])
libyang err : Node "transceivers-module-specific-info" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6'])
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='port-7'])
libyang err : Invalid union value "ietf-network-inventory:transceivers-module" - no matching subtype found:
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
    libyang 2 - identityref, version 1: Invalid identityref "ietf-network-inventory:transceivers-module" value - identity not found in module "ietf-network-inventory".
 (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7']/class)
libyang err : Node "parent-component-ref" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7'])
libyang err : Node "transceivers-module-specific-info" not found as a child of "component" node. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-1'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-3'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-4'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-5'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-6'])
libyang err : Mandatory node "class" instance does not exist. (/ietf-network-inventory:network-inventory/network-elements/network-element[ne-id='NE-1']/components/component[component-id='transceivers-module-7'])
YANGLINT[E]: Failed to parse input data file "/home/vasko/Documents/test/ports-transceivers-breakouts-examples.json".

I have not used the --path parameter as it is not needed but I think that may be the issue in your case, a different YANG module is used than that which you attached. The when condition in the attached module is

                "derived-from-or-self(../nwi:class,
                'nwi:transceiver-module')";

but in your error there is

When condition "derived-from-or-self(../nwi:class,
'nwi:transceivers-module')" not satisfied.