'delete' and 'replace' filters do not work properly with gNMI and CRUD service

[111pontes]

from ydk.path import Repository
from ydk.gnmi.providers import gNMIServiceProvider
from ydk.services import CRUDService
from ydk.models.openconfig import openconfig_interfaces as oc_interfaces
from ydk.models.ietf import iana_if_type
from ydk.filters import YFilter

interfaces = oc_interfaces.Interfaces()
interface = interfaces.Interface()
interface.name = name
interface.config.name = name
interface.config.type = iana_if_type.EthernetCsmacd()
interface.config.description = ''
interface.config.enabled = False
#interface.subinterfaces.yfilter = YFilter.delete
interfaces.interface.append(interface)
interfaces.yfilter = YFilter.replace

crud.update(gnmi, interfaces)

2019-02-20 18:27:03,299 - ydk - INFO - gNMIServiceProvider Connected to 198.18.1.11 via Insecure Channel
2019-02-20 18:27:03,326 - ydk - INFO - Executing CRUD update operation on [openconfig-interfaces:interfaces]
2019-02-20 18:27:03,326 - ydk - INFO - Executing set gRPC operation 'update' on entity 'openconfig-interfaces:interfaces'
2019-02-20 18:27:03,351 - ydk - INFO - 
=============== Set Request Sent ================
update {
  path {
    origin: "openconfig-interfaces"
    elem {
      name: "interfaces"
    }
  }
  val {
    json_ietf_val: "{\"interface\":[{\"name\":\"GigabitEthernet0/0/0/0\",\"config\":{\"type\":\"iana-if-type:ethernetCsmacd\",\"name\":\"GigabitEthernet0/0/0/0\",\"description\":\"\",\"enabled\":false},\"subinterfaces\":{\"@\":{\"ietf-netconf:operation\":\"delete\"}}}]}"
  }
}


2019-02-20 18:27:03,393 - ydk - ERROR - SetRequest failed with error:
gNMI: set-request update/replace: unknown-element: Unknown element is specified: @
Traceback (most recent call last):
  File "./remove_peer_interface.py", line 100, in <module>
    crud.update(provider, interfaces)
  File "/usr/local/lib/python3.6/dist-packages/ydk/errors/error_handler.py", line 112, in helper
    return func(self, provider, entity, *args, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/ydk/services/crud_service.py", line 98, in update
    return self._crud.update(provider, entity)
  File "/usr/lib/python3.6/contextlib.py", line 99, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/local/lib/python3.6/dist-packages/ydk/errors/error_handler.py", line 82, in handle_runtime_error
    _raise(_exc)
  File "/usr/local/lib/python3.6/dist-packages/ydk/errors/error_handler.py", line 54, in _raise
    exec("raise exc from None")
  File "<string>", line 1, in <module>
ydk.errors.YServiceProviderError:  SetRequest failed with error:
gNMI: set-request update/replace: unknown-element: Unknown element is specified: @
2019-02-20 18:27:03,488 - ydk - INFO - Disconnected from device

$ pip list | grep ydk
ydk                     0.8.1.post1
ydk-models-cisco-ios-xr 6.5.1.post1
ydk-models-ietf         0.1.5.post2
ydk-models-openconfig   0.1.6.post1
ydk-service-gnmi        0.4.0.post1
$ 

[ygorelik]

Fixed with this commit; component - gnmi_provider.cpp.

Tested 'delete' with this script

import logging

from ydk.path import Repository
from ydk.gnmi.providers import gNMIServiceProvider
from ydk.providers import NetconfServiceProvider
from ydk.services import CRUDService
from ydk.filters import YFilter
from test_utils import enable_logging

from ydk.models.ydktest_oc_nis import openconfig_interfaces as oc_interfaces
from ydk.models.ydktest_oc_nis import iana_if_type

enable_logging(logging.INFO)

interfaces = oc_interfaces.Interfaces()
interface = interfaces.Interface()
interface.name = '"TenGigE0/0/0/0"'
interfaces.interface.append(interface)
interfaces.yfilter = YFilter.delete

# mixed operations not supported, issue #885
#interface.subinterfaces.yfilter = YFilter.delete

repo = Repository('/home/yan/.ydk/172.27.150.154')
provider = gNMIServiceProvider(repo,
                               address='172.27.150.154',
                               port=57800,
                               username='root',
                               password='Cisco1234!')
crud = CRUDService()
r = crud.update(provider, interfaces)

Results

yan@ubuntu-yan:~/ydk-workspace/ydk-gen$ python scripts/tests/test_881.py 
2019-03-07 10:50:55,941 - ydk - INFO - gNMIServiceProvider Connected to 172.27.150.154 via Insecure Channel
2019-03-07 10:50:55,941 - ydk - INFO - Executing CRUD update operation on [openconfig-interfaces:interfaces]
2019-03-07 10:50:55,941 - ydk - INFO - Executing set gRPC operation 'delete' on entity 'openconfig-interfaces:interfaces'
2019-03-07 10:50:55,946 - ydk - INFO - 
=============== Set Request Sent ================
delete {
  origin: "openconfig-interfaces"
  elem {
    name: "interfaces"
  }
  elem {
    name: "interface"
    key {
      key: "name"
      value: "\"TenGigE0/0/0/0\""
    }
  }
  elem {
    name: "config"
  }
}

2019-03-07 10:50:57,066 - ydk - INFO - 
============= Set Response Received =============
response {
  path {
    origin: "openconfig-interfaces"
    elem {
      name: "interfaces"
    }
    elem {
      name: "interface"
      key {
        key: "name"
        value: "\"TenGigE0/0/0/0\""
      }
    }
    elem {
      name: "config"
    }
  }
  message {
  }
  op: DELETE
}
message {
}
timestamp: 1551955857000096808

2019-03-07 10:50:57,067 - ydk - INFO - Set Operation Succeeded
2019-03-07 10:50:57,067 - ydk - INFO - Operation succeeded
2019-03-07 10:50:57,067 - ydk - INFO - Disconnected from device

Tested 'replace' with this script

import logging

from ydk.path import Repository
from ydk.gnmi.providers import gNMIServiceProvider
from ydk.providers import NetconfServiceProvider
from ydk.services import CRUDService
from ydk.filters import YFilter
from test_utils import enable_logging

from ydk.models.ydktest_oc_nis import openconfig_interfaces as oc_interfaces
from ydk.models.ydktest_oc_nis import iana_if_type

enable_logging(logging.INFO)

interfaces = oc_interfaces.Interfaces()
interface = interfaces.Interface()
interface.name = 'TenGigE0/0/0/0'
interface.config.name = 'TenGigE0/0/0/0'
interface.config.type = iana_if_type.EthernetCsmacd()
interface.config.description = 'Testing'
interface.config.enabled = False
interfaces.interface.append(interface)
interfaces.yfilter = YFilter.replace

repo = Repository('/home/yan/.ydk/172.27.150.154')
provider = gNMIServiceProvider(repo,
                               address='172.27.150.154',
                               port=57800,
                               username='root',
                               password='Cisco1234!')
crud = CRUDService()
r = crud.update(provider, interfaces)

Result

yan@ubuntu-yan:~/ydk-workspace/ydk-gen$ python scripts/tests/test_881.py 
2019-03-07 10:56:42,596 - ydk - INFO - gNMIServiceProvider Connected to 172.27.150.154 via Insecure Channel
2019-03-07 10:56:42,596 - ydk - INFO - Executing CRUD update operation on [openconfig-interfaces:interfaces]
2019-03-07 10:56:42,596 - ydk - INFO - Executing set gRPC operation 'replace' on entity 'openconfig-interfaces:interfaces'
2019-03-07 10:56:42,612 - ydk - INFO - 
=============== Set Request Sent ================
replace {
  path {
    origin: "openconfig-interfaces"
    elem {
      name: "interfaces"
    }
  }
  val {
    json_ietf_val: "{\"interface\":[{\"name\":\"\\\"TenGigE0/0/0/0\\\"\",\"config\":{\"type\":\"iana-if-type:ethernetCsmacd\",\"name\":\"\\\"TenGigE0/0/0/0\\\"\",\"description\":\"Testing\",\"enabled\":false}}]}"
  }
}


2019-03-07 10:56:42,683 - ydk - INFO - 
============= Set Response Received =============
response {
  path {
    origin: "openconfig-interfaces"
    elem {
      name: "interfaces"
    }
  }
  message {
  }
  op: REPLACE
}
message {
}

2019-03-07 10:56:42,690 - ydk - INFO - Disconnected from device

Note 1. In results the SetRequest operation corresponds to the filter set on the top-level entity.
Note 2. Current implementation of gNMI Service does not support setting of replace/update/delete filters on non-top-level entities or leaves. There is open enhancement for this issue - #885.