prefix test is not defined in ('test', '')

[JHolcman-T]

This issue appears when trying to augment to container from the same module where the augment is.
This issue appears only when there is at least one module imported.

YANGSON-VERSION: 1.3.59

JSON Module state when not importing:

{
  "ietf-yang-library:modules-state": {
    "module-set-id": "0",
    "module": [
      {
        "name": "test",
        "namespace": "test.com",
        "revision": "",
        "conformance-type": "implement"
      }
    ]
  }
}

JSON Module state when importing:

{
  "ietf-yang-library:modules-state": {
    "module-set-id": "0",
    "module": [
      {
        "name": "test",
        "namespace": "test.com",
        "revision": "",
        "conformance-type": "implement"
      },
      {
        "name": "test2",
        "namespace": "test2.com",
        "revision": "",
        "conformance-type": "implement"
      }
    ]
  }
}

First YANG file:

module test {

  yang-version "1.1";
  namespace "test.com";
  prefix test;

  import test2{ // Without this import everything seems to work. 
    prefix test2; // However I have to import this and many other modules in real project...
  }

  container main {
    leaf leaf1 {
      type string;
    }
  }

  augment /test:main { //Issue disappears when using augment /main (without test:) even when modules are imported
    leaf-list listofstrings {
      type string;
    }
  }
}

Second YANG file:

// Content of this module is simplified for better understanding...
module test2 {

  yang-version "1.1";
  namespace "test2.com";
  prefix test2;

  container main2 {
    leaf leaf2 {
      type string;
    }
  }
}

[llhotka]

Both modules have the same namespace test.com, which is illegal. If you change the namespace of the test2 module to test2.com, then everything works fine.

[JHolcman-T]

Both modules have the same namespace test.com, which is illegal. If you change the namespace of the test2 module to test2.com, then everything works fine.

Thanks, for your reply. I changed namespace variable as you mentioned however it doesn't work either.

Console log (modules-state is auto-generated from module data):

{
  "ietf-yang-library:modules-state": {
    "module-set-id": "0",
    "module": [
      {
        "name": "test",
        "namespace": "test.com",
        "revision": "",
        "conformance-type": "implement"
      },
      {
        "name": "test2",
        "namespace": "test2.com",
        "revision": "",
        "conformance-type": "implement"
      }
    ]
  }
}
('test', '')
Traceback (most recent call last):
  File "/home/hjm02/PycharmProjects/yang_diff_wab/json_builder/__main__.py", line 52, in <module>
    dm = DataModel.from_file(b.json_file.name, tuple(paths))
  File "/home/hjm02/PycharmProjects/yang_diff_wab/yangdiff/libs/yangson/datamodel.py", line 59, in from_file
    return cls(yltxt, mod_path, description)
  File "/home/hjm02/PycharmProjects/yang_diff_wab/yangdiff/libs/yangson/datamodel.py", line 86, in __init__
    self._build_schema()
  File "/home/hjm02/PycharmProjects/yang_diff_wab/yangdiff/libs/yangson/datamodel.py", line 203, in _build_schema
    self.schema._augment_stmt(aug, sctx)
  File "/home/hjm02/PycharmProjects/yang_diff_wab/yangdiff/libs/yangson/schemanode.py", line 654, in _augment_stmt
    path = sctx.schema_data.sni2route(stmt.argument, sctx)
  File "/home/hjm02/PycharmProjects/yang_diff_wab/yangdiff/libs/yangson/schemadata.py", line 385, in sni2route
    res.append(self.translate_node_id(qn, sctx))
  File "/home/hjm02/PycharmProjects/yang_diff_wab/yangdiff/libs/yangson/schemadata.py", line 344, in translate_node_id
    raise UnknownPrefix(p, sctx.text_mid) from None
yangdiff.libs.yangson.exceptions.UnknownPrefix: prefix test is not defined in ('test', '')

[llhotka]

I am not able to reproduce this:

(yangson) $ cat ylib.json 
{
  "ietf-yang-library:modules-state": {
    "module-set-id": "0",
    "module": [
      {
        "name": "test",
        "namespace": "test.com",
        "revision": "",
        "conformance-type": "implement"
      },
      {
        "name": "test2",
        "namespace": "test2.com",
        "revision": "",
        "conformance-type": "implement"
      }
    ]
  }
}

(yangson) $ cat test.yang 
module test {

  yang-version "1.1";
  namespace "test.com";
  prefix test;

  import test2{
    prefix test2;
  }

  container main {
    leaf leaf1 {
      type string;
    }
  }

  augment /test:main {
    leaf-list listofstrings {
      type string;
    }
  }
}

(yangson) $ cat test2.yang 
module test2 {

  yang-version "1.1";
  namespace "test2.com";
  prefix test2;

  container main2 {
    leaf leaf2 {
      type string;
    }
  }
}
(yangson) $ cat test.py
from yangson import DataModel

dm = DataModel.from_file("ylib.json")
(yangson) $ python test.py
(yangson) $

[llhotka]

Can you perhaps try it with Yangson 1.3.65?

[JHolcman-T]

Can you perhaps try it with Yangson 1.3.65?

Thank you very much! It works with newer version.