Error when delete config

haoywang — Mon, 10 Apr 2017 08:18:45 GMT

Hi Experts

I found two errors when try to delete config:

When I tried to delete a neighbor in router BGP, an error occured:

File "/Users/Muyiwhy/Documents/workspace/ydk_bgp/backend/util.py", line 56, in delete

crud.delete(provider, object)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/services/crud_service.py", line 87, in delete

self._execute_crud_operation_on_provider(provider, entity, 'DELETE', False)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/services/crud_service.py", line 166, in _execute_crud_operation_on_provider

only_config

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/providers/netconf_provider.py", line 88, in encode

return self.sp_instance.encode(entity, operation, only_config)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/providers/_provider_plugin.py", line 112, in encode

root = self._encode_edit_request(root, entity, operation)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/providers/_provider_plugin.py", line 432, in _encode_edit_request

root = self._create_preamble(entity, root)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/providers/_provider_plugin.py", line 496, in _create_preamble

return self._encode_parents_of_root(root, parent_meta_tuple_list, parent_ns)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/providers/_provider_plugin.py", line 506, in _encode_parents_of_root

root = self._encode_items(root, parent, meta_info)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/providers/_provider_plugin.py", line 542, in _encode_items

self._encode_empty(root, entity, member)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/providers/_provider_plugin.py", line 546, in _encode_empty

entity_ns = entity.i_meta.namespaces

AttributeError: '_MetaInfoClass' object has no attribute 'namespaces'

I've tried XRV6.1.2 with YDK6.1.2 and XRV6.1.3 with YDK6.2.1. The error come up in both enviroment.

I change the code in _provider_plugin.py line 546 to

def _encode_empty(self, root, entity, member):
    try:
        entity_ns = entity.i_meta.namespaces
    except:
        entity_ns = None
    empty_ns = _yang_ns._namespaces[member.module_name]
    NSMAP = {}
    if entity_ns is not None and entity_ns != empty_ns:
        NSMAP[None] = empty_ns

member_elem = etree.SubElement(root, member.name, nsmap=NSMAP)

and the error disappered. I'm not sure if there are any risk in this.

When I try to delete a community-set, an error occured:

File "/Users/Muyiwhy/Documents/workspace/ydk_bgp/backend/util.py", line 56, in delete

crud.delete(provider, object)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/services/crud_service.py", line 86, in delete

MetaService.normalize_meta(provider._get_capabilities(), entity)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/services/meta_service.py", line 67, in normalize_meta

deviation_tables = MetaService.get_active_deviation_tables(capabilities, entity)

File "/Users/Muyiwhy/virtualenv/ydk_new/lib/python2.7/site-packages/ydk/services/meta_service.py", line 87, in get_active_deviation_tables

module = importlib.import_module('ydk.models._deviate._%s' % pname)

File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module

__import__(name)

This error only happend in XRV6.1.3 with YDK6.2.1, didn't happend in XRV6.1.2 with YDK6.1.2.

I change the code in meta_service.py line 87 to

def get_active_deviation_tables(cls, capabilities, entity):

   """ Return active deviation tables

        Args:
            cls: First argument for class method
            capabilities: List of capabilities get from provider
            enttiy: An instance of YDk object

        Returns:
            deviation_tables: A dictionary for deviation tables

    """
   active_pmodule_names = _get_active_deviation_module_names(capabilities, entity)

deviation_tables = {}

for pname in active_pmodule_names:

try:

module = importlib.import_module('ydk.models._deviate._%s' % pname)

deviation_table = getattr(module, '_deviation_table')

deviation_tables[pname] = deviation_table

except:

continue

return deviation_tables

and the error disappered.

Is there a way to solve these error without changing the source code?

Re: Error when delete config

xiaoqinz — Mon, 10 Apr 2017 16:29:16 GMT

Hi Haoyu,

For the first error, I think it is a bug(maybe a typo, see here), sorry about that.

For the second error:

This error only happend in XRV6.1.3 with YDK6.2.1, didn't happend in XRV6.1.2 with YDK6.1.2.

I guess YDK6.2.1(I guess you are referring to this pypi package) is missing deviation models advertised in XRV6.1.3, maybe a better way to solve this issue is to generate and install a Python package for XRV6.1.3 with a profile file specific for this device(for example 6.2.1 profile file is for XRV6.2.1, and it uses YANG models published for XRV6.2.1, and is used to generate YDK6.2.1). Once you have a 6.1.3 profile, you could follow steps in ydk-gen repository, generate package then install package for 6.1.3(maybe in a different environment):

ydk-gen $ ./generate.py --bundle profiles/bundle/cisco-ios-xr_6_1_3.json

ydk-gen $ pip install gen-api/python/cisco_ios_xr-bundle/dist/ydk*.gz

Let me know if it works for two errors above.

Re: Error when delete config

haoywang — Tue, 11 Apr 2017 01:27:13 GMT

Thanks for your response. I will test the solution and see if it works for us.

Re: Error when delete config

haoywang — Tue, 11 Apr 2017 01:27:24 GMT

Thanks for your response. I will test the solution and see if it works for us.

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