def _perform_read_filter_check(self, read_filter):
if read_filter is None:
self.service_logger.error('Passed in a None filter')
raise YPYServiceError('Filter cannot be None')
if not isinstance(read_filter, YList) and not hasattr(
read_filter, '_meta_info'):
self.service_logger.error('Illegal filter type passed in for read')
raise YPYServiceError('Illegal filter')
def _perform_read_filter_check(self, read_filter):
if read_filter is None:
self.service_logger.error('Passed in a None filter')
err_msg = "'filter' cannot be None"
raise YPYServiceError(error_msg=err_msg)
if not isinstance(read_filter, YList) and not hasattr(
read_filter, '_meta_info'):
err_msg = "Illegal 'filter' type passed in for read"
self.service_logger.error(err_msg)
raise YPYServiceError(error_msg=err_msg)
def get_config(self, provider, source, get_filter, with_defaults_option=None):
"""Execute a get-config operation to retrieve all or part of a
specified configuration.
Args:
provider (ydk.providers.ServiceProvider): A provider instance.
source (Datastore): Particular configuration to retrieve. Valid
options are Datastore.candidate, Datastore.running,
and Datastore.startup.
get_filter (object): A YDK entity object used as a subtree filter
or XPath filter.
with_defaults (WithDefaultsModeEnum): The explicit defaults
processing mode requested.
Returns:
A YDK entity object represents copy of the running datastore subset
and/or state data that matched the filter criteria (if any). An
empty data container indicates that the request did not produce
any results.
Raises:
YPYModelError: If validation error occurs.
YPYServiceError: If other error has occurred.
Possible errors could be:
- A server side error
- If there isn't enough information in the entity to
prepare the message (missing keys for example).
"""
if source is None:
err_msg = "'source' cannot be None"
raise YPYServiceError(error_msg=err_msg)
if with_defaults_option is not None and not isinstance(with_defaults_option, ietf_netconf_with_defaults.WithDefaultsModeEnum):
err_msg = "optional arg 'with_defaults_option' must be of type ietf_netconf_with_defaults.WithDefaultsModeEnum"
raise YPYServiceError(error_msg=err_msg)
self.service_logger.info('Executing get-config RPC')
rpc = ietf_netconf.GetConfigRpc()
rpc.input.filter = get_filter
_validate_datastore_options(source, 'get-config:source')
rpc.input.source = _get_rpc_datastore_object(source, rpc.input.source)
rpc.input.with_defaults = with_defaults_option
rpc = MetaService.normalize_meta(provider._get_capabilities(), rpc)
result = provider.execute(
provider.sp_instance.encode_rpc(rpc),
''
)
result = payload_convert(result)
if len(result) == 0:
return None
return provider.decode(result, None)
def edit_config(self, provider, target, config, default_operation=None, error_option=None, test_option=None):
"""Execute an edit-config operation to load all or part of a specified
configuration to the specified target configuration.
Args:
provider (ydk.providers.ServiceProvider): A provider instance.
target (Datastore): Particular configuration to copy from. Valid
options are Datastore.candidate, Datastore.running.
config (object): A YDK entity object used as a config block.
default_operation (EditConfigRpc.Input.DefaultOperationEnum):
Selects the default operation for this edit-config request.
error_option (EditConfigRpc.Input.ErrorOptionEnum): Selects the
error option for this edit-config request.
test_option (EditConfigRpc.Input.TestOptionEnum): Selects the
test option for this edit-config request.
Returns:
An ok reply string if operation succeeds.
Raises:
YPYModelError: If validation error occurs.
YPYServiceError: If other error has occurred.
Possible errors could be:
- A server side error
- If there isn't enough information in the entity to
prepare the message (missing keys for example).
"""
if None in (target, config):
self.service_logger.error('Passed in a None arg')
err_msg = "'target' and 'config' cannot be None"
raise YPYServiceError(error_msg=err_msg)
if default_operation is not None and not isinstance(default_operation, ietf_netconf.EditConfigRpc.Input.DefaultOperationEnum):
err_msg = "optional arg 'default_operation' must be of type ietf_netconf.EditConfigRpc.Input.DefaultOperationEnum"
raise YPYServiceError(error_msg=err_msg)
if error_option is not None and not isinstance(error_option, ietf_netconf.EditConfigRpc.Input.ErrorOptionEnum):
err_msg = "optional arg 'error_option' must be of type ietf_netconf.EditConfigRpc.Input.ErrorOptionEnum"
raise YPYServiceError(error_msg=err_msg)
if test_option is not None and not isinstance(test_option, ietf_netconf.EditConfigRpc.Input.TestOptionEnum):
err_msg = "optional arg 'test_option' must be of type ietf_netconf.EditConfigRpc.Input.TestOptionEnum"
raise YPYServiceError(error_msg=err_msg)
self.service_logger.info('Executing edit-config RPC')
rpc = ietf_netconf.EditConfigRpc()
_validate_datastore_options(target, 'edit-config:target')
rpc.input.target = _get_rpc_datastore_object(target, rpc.input.target)
rpc.input.config = config
rpc.input.default_operation = default_operation
rpc.input.error_option = error_option
rpc.input.test_option = test_option
return self.executor.execute_rpc(provider, rpc)
def copy_config(self, provider, target, source, with_defaults_option=None):
""" Execute a copy-config operation to create or replace an entire
configuration datastore with the contents of another complete
configuration datastore.
Args:
provider (ydk.providers.ServiceProvider): A provider instance.
target (Datastore | str): Particular configuration to copy to.
Valid options are Datastore.candidate, Datastore.running,
Datastore.startup and url(str) if the device has such feature
advertised in device capability.
source (Datastore | str | object): Particular configuration to copy
from. Valid options are Datastore.candidate, Datastore.running,
Datastore.startup and url(str) if the deivce has such feature
advertised in capability. YDK entity object could also be used
as a config block for this parameter.
with_defaults (WithDefaultsModeEnum): The explicit defaults
processing mode requested.
Returns:
An ok reply string if operation succeeds.
Raises:
YPYModelError: If validation error occurs.
YPYServiceError: If other error has occurred.
Possible errors could be:
- A server side error
- If there isn't enough information in the entity to
prepare the message (missing keys for example).
"""
if None in (target, source):
self.service_logger.error('Passed in a None arg')
err_msg = "'target' and 'source' cannot be None"
raise YPYServiceError(error_msg=err_msg)
if with_defaults_option is not None and not isinstance(
with_defaults_option,
ietf_netconf_with_defaults.WithDefaultsModeEnum):
err_msg = "optional arg 'with_defaults_option' must be of type ietf_netconf_with_defaults.WithDefaultsModeEnum"
raise YPYServiceError(error_msg=err_msg)
self.service_logger.info('Executing copy-config RPC')
rpc = ietf_netconf.CopyConfigRpc()
_validate_datastore_options(source, 'copy-config:source')
_validate_datastore_options(target, 'copy-config:target')
rpc.input.source = _get_rpc_datastore_object(source, rpc.input.source)
rpc.input.target = _get_rpc_datastore_object(target, rpc.input.target)
rpc.input.with_defaults = with_defaults_option
return self.executor.execute_rpc(provider, rpc)
def _entity_exists(self, provider, entity):
if None in (provider, entity):
self.service_logger.error('Passed in a None arg')
err_msg = "'provider' and 'entity' cannot be None"
raise YPYServiceError(error_msg=err_msg)
read_entity = self.read(provider,
self._create_update_entity_filter(entity))
if not read_entity._has_data():
err_msg = "'entity' does not exist on remote server - cannot perform update operation"
self.service_logger.error(err_msg)
raise YPYServiceError(error_msg=err_msg)
return True
def validate(self, provider, source=None):
"""Execute a validate operation to validate the contents of the
specified configuration.
Args:
provider (ydk.providers.ServiceProvider): A provider instance.
source (Datastore | str | object): Particular configuration to
validate. Valid options are Datastore.candidate,
Datastore.running, Datastore.startup and url(str) if the deivce
has such feature advertised in device capability. YDK entity
object could also be used as a config block for this parameter.
Returns:
An ok reply string if operation succeeds.
Raises:
YPYModelError: If validation error occurs.
YPYServiceError: If other error has occurred.
Possible errors could be:
- A server side error
- If there isn't enough information in the entity to
prepare the message (missing keys for example).
"""
if source is None:
err_msg = "'source' cannot be None"
raise YPYServiceError(error_msg=err_msg)
self.service_logger.info('Executing validate RPC')
rpc = ietf_netconf.ValidateRpc()
if source is not None:
_validate_datastore_options(source, 'validate:source')
rpc.input.source = _get_rpc_datastore_object(source, rpc.input.source)
return self.executor.execute_rpc(provider, rpc)
def unlock(self, provider, target):
"""Execute an unlock operation to release a configuration lock,
previously obtained with the 'lock' operation.
Args:
provider (ydk.providers.ServiceProvider): A provider instance.
target (Datastore): Particular configuration to unlock. Valid
options are Datastore.candidate, Datastore.running, and
Datastore.startup if the device has such feature advertised.
Returns:
An ok reply string if operation succeeds.
Raises:
YPYModelError: If validation error occurs.
YPYServiceError: If other error has occurred.
Possible errors could be:
- A server side error
- If there isn't enough information in the entity to
prepare the message (missing keys for example).
"""
if target is None:
err_msg = "'target' cannot be None"
raise YPYServiceError(error_msg=err_msg)
self.service_logger.info('Executing unlock RPC')
rpc = ietf_netconf.UnlockRpc()
_validate_datastore_options(target, 'unlock:target')
rpc.input.target = _get_rpc_datastore_object(target, rpc.input.target)
return self.executor.execute_rpc(provider, rpc)
def delete_config(self, provider, target):
"""Execute an delete-config operation to delete a configuration datastore.
Args:
provider (ydk.providers.ServiceProvider): A provider instance.
target (Datastore.startup | str): Particular configuration to
delete. Valid options are Datastore.startup or url(str).
Returns:
An ok reply string if operation succeeds.
Raises:
YPYModelError: If validation error occurs.
YPYServiceError: If other error has occurred.
Possible errors could be:
- A server side error
- If there isn't enough information in the entity to
prepare the message (missing keys for example).
"""
if target is None:
err_msg = "'target' cannot be None"
raise YPYServiceError(error_msg=err_msg)
self.service_logger.info('Executing delete-config RPC')
rpc = ietf_netconf.DeleteConfigRpc()
_validate_datastore_options(target, 'delete-config:target')
rpc.input.target = _get_rpc_datastore_object(target, rpc.input.target)
return self.executor.execute_rpc(provider, rpc)
def update(self, provider, entity):
""" Update the entity
Args:
- provider: An instance of ydk.providers.ServiceProvider
- entity: An an entity class defined under the ydk.models package or subpackages
Note:
- A given member of an entity can be deleted by setting its attribute to an instance of ydk.types.Delete class.
- An entity can only be updated if it exists on the server. Otherwise a YPYServiceError will be raised
Returns:
None
Raises:
`YPYModelError <ydk.errors.html#ydk.errors.YPYModelError>`_ if validation failed.
`YPYServiceError <ydk.errors.html#ydk.errors.YPYServiceError>`_ if other error has occurred. Possible errors could be a service side error
or if there isn't enough information in the entity to prepare the message (missing keys for example)
"""
# first read the object
if None in (provider, entity):
self.service_logger.error('Passed in a None arg')
err_msg = "'provider' and 'entity' cannot be None"
raise YPYServiceError(error_msg=err_msg)
#if self._entity_exists(provider, entity):
# read has succeeded so do an edit-config
MetaService.normalize_meta(provider._get_capabilities(), entity)
self._execute_crud_operation_on_provider(provider, entity, 'UPDATE',
False)
def read(self, provider, read_filter, only_config=False):
""" Read the entity or entities
Args:
- provider: An instance of ydk.providers.ServiceProvider
- read_filter: A read_filter is an instance of an entity class.
An entity class is a class defined under the ydk.models package that is not an Enum , Identity of subclass of FixedBitsDict) .
Attributes of this entity class may contain values that act as match expressions or can be explicitly marked as to be read by assigning an instance of ydk.types.READ class to them.
- only_config: Flag that indicates that only data that represents configuration data is to be fetched.
Default is set to False i.e. both oper and config data will be fetched.
Returns:
The entity or entities as identified by the read_filter.
Raises:
`YPYModelError <ydk.errors.html#ydk.errors.YPYModelError>`_ if validation failed.
`YPYServiceError <ydk.errors.html#ydk.errors.YPYServiceError>`_ if other error has occurred. Possible errors could be
- a server side error
- if there isn't enough information in the entity to prepare the message (missing keys for example)
- if the type to be returned cannot be determined.
"""
if None in (provider, read_filter):
self.service_logger.error('Passed in a None arg')
err_msg = "'provider' and 'read_filter' cannot be None"
raise YPYServiceError(error_msg=err_msg)
MetaService.normalize_meta(provider._get_capabilities(), read_filter)
self._perform_read_filter_check(read_filter)
payload = self._execute_crud_operation_on_provider(
provider, read_filter, 'READ', only_config)
return provider.decode(payload, read_filter)
def delete(self, provider, entity):
""" Delete the entity
Args:
provider: An instance of ydk.providers.ServiceProvider
entity: An an entity class defined under the ydk.models package or subpackages
Returns:
None
Raises:
`YPYModelError <ydk.errors.html#ydk.errors.YPYModelError>`_ if validation failed.
`YPYServiceError <ydk.errors.html#ydk.errors.YPYServiceError>`_ if other error has occurred. Possible errors could be a service side error
or if there isn't enough information in the entity to prepare the message (missing keys for example)
"""
if None in (provider, entity):
self.service_logger.error('Passed in a None arg')
err_msg = "'provider' and 'entity' cannot be None"
raise YPYServiceError(error_msg=err_msg)
MetaService.normalize_meta(provider._get_capabilities(), entity)
self._execute_crud_operation_on_provider(provider, entity, 'DELETE',
False)
def execute_rpc(self, provider, rpc):
""" Execute the RPC
Args:
provider: An instance of ydk.providers.ServiceProvider
rpc: An instance of an RPC class defined under the ydk.models package or subpackages
Returns:
None
Raises:
`YPYModelError <ydk.errors.html#ydk.errors.YPYModelError>`_ if validation.
`YPYServiceError <ydk.errors.html#ydk.errors.YPYServiceError>`_ if other error has occurred. Possible errors could be
- a server side error
- if there isn't enough information in the entity to prepare the message (missing keys for example)
"""
if None in (provider, rpc):
self.service_logger.error('Passed in a None arg')
err_msg = "'provider' and 'rpc' cannot be None"
raise YPYServiceError(error_msg=err_msg)
try:
rpc = MetaService.normalize_meta(provider._get_capabilities(), rpc)
self.service_logger.info('Executor operation initiated')
result = provider.execute(provider.sp_instance.encode_rpc(rpc), '')
return provider.decode(result, rpc)
finally:
self.service_logger.info('Executor operation completed')
def decode(self, decoder, payload):
if None in (decoder, payload):
msg = "'decoder' and 'payload' cannot be None"
raise YPYServiceError(error_msg=msg)
self.service_logger.info('Decoding operation initiated')
entity = self.operate_on_object_or_dictionary(
payload, CodecService._decode_payload, [decoder])
self.service_logger.info('Decoding operation completed')
return entity
def encode(self, encoder, entity):
if None in (encoder, entity):
msg = "'encoder' and 'entity' cannot be None"
raise YPYServiceError(error_msg=msg)
self.service_logger.info('Encoding operation initiated')
payload = self.operate_on_object_or_dictionary(
entity, CodecService._encode_entity, [encoder])
self.service_logger.info('Encoding operation completed')
return payload
def _check_type_mismatch(value, member):
# type mismatches for ATTRIBUTE, REFERENCE_ENUM, REFERENCE_IDENTITY,
# REFREENCE_BITS and REFREENCE_ANYXML are covered by validation
if member.mtype == REFERENCE_CLASS:
value_clazz_name = value.__class__.__name__
member_clazz_name = member.clazz_name.split('.')[-1]
if any(( # not value.__class__.__module__.startswith('ydk.models'),
isinstance(value,
list), value_clazz_name != member_clazz_name)):
raise YPYServiceError(error_msg=_TYPE_MISMATCH_CLASS.format(
value_clazz_name, member_clazz_name))
elif member.mtype == REFERENCE_LIST:
if not type(value) == YList:
raise YPYServiceError(error_msg=_TYPE_MISMATCH_LIST.format(
value.__class__.__name__, member.name))
elif member.mtype == REFERENCE_LEAFLIST:
if not type(value) == YLeafList:
raise YPYServiceError(error_msg=_TYPE_MISMATCH_LLIST.format(
value.__class__.__name__, member.name))
def _set_parent_imeta(entity, child_imeta=None):
if isinstance(entity, (YList, YLeafList, YListItem)):
_set_parent_imeta(entity.parent)
elif entity:
entity.i_meta = _copy_meta(entity._meta_info())
if child_imeta:
child_imeta.parent = entity.i_meta
if hasattr(entity, 'parent'):
if entity.parent is entity:
raise YPYServiceError(error_msg=_ERR_USER_PPOINTER)
else:
_set_parent_imeta(entity.parent, entity.i_meta)
def _create_update_entity_filter(self, entity):
if entity is None:
self.service_logger.error('Passed in a None entity')
err_msg = "'entity' cannot be None"
raise YPYServiceError(error_msg=err_msg)
module = importlib.import_module(entity._meta_info().pmodule_name)
update_filter = getattr(module, entity._meta_info().name)()
# copy over the keys
for key_member in entity._meta_info().key_members():
key_val = getattr(entity, key_member.presentation_name)
update_filter.__dict__[key_member.presentation_name] = key_val
return update_filter
def _execute_crud_operation_on_provider(self, provider, entity, operation,
only_config):
if None in (provider, entity, operation, only_config):
self.service_logger.error('Passed in a None arg')
err_msg = "'provider', 'entity', 'operation', and 'only_config' cannot be None"
raise YPYServiceError(error_msg=err_msg)
try:
self.service_logger.info(
'{0} operation initiated'.format(operation))
return self.execute_payload(
provider, provider.encode(entity, operation, only_config),
operation)
finally:
self.service_logger.info(
'{0} operation completed'.format(operation))
def get(self, provider, get_filter, with_defaults_option=None):
"""Execute a get operation to retrieve running configuration and device
state information.
Args:
provider (ydk.providers.ServiceProvider): A provider instance.
get_filter (object): A YDK entity object specifies the portion of
the system configuration and state data to retrieve.
with_defaults (WithDefaultsModeEnum): The explicit defaults
processing mode requested.
Returns:
A YDK entity object represents copy of the running datastore subset
and/or state data that matched the filter criteria (if any). An
empty data container indicates that the request did not produce
any results
Raises:
YPYModelError: If validation error occurs.
YPYServiceError: If other error has occurred.
Possible errors could be:
- A server side error
- If there isn't enough information in the entity to
prepare the message (missing keys for example).
"""
if with_defaults_option is not None and not isinstance(with_defaults_option, ietf_netconf_with_defaults.WithDefaultsModeEnum):
err_msg = "optional arg 'with_defaults_option' must be of type ietf_netconf_with_defaults.WithDefaultsModeEnum"
raise YPYServiceError(error_msg=err_msg)
self.service_logger.info('Executing get RPC')
rpc = ietf_netconf.GetRpc()
rpc.input.filter = get_filter
rpc.input.with_defaults = with_defaults_option
rpc = MetaService.normalize_meta(provider._get_capabilities(), rpc)
result = provider.execute(
provider.sp_instance.encode_rpc(rpc),
''
)
result = payload_convert(result)
if len(result) == 0:
return None
return provider.decode(result, None)
def _validate_datastore_options(datastore, option):
res = True
if option == 'copy-config:target':
res = isinstance(datastore, (str, Datastore))
elif option == 'copy-config:source':
res = isinstance(datastore, (str, object, Datastore))
elif option == 'delete-config:target':
res = isinstance(datastore, str) or datastore == Datastore.startup
elif option == 'edit-config:target':
res = datastore in (Datastore.candidate, Datastore.running)
elif option == 'get-config:source':
res = isinstance(datastore, Datastore)
elif option == 'lock:target':
res = isinstance(datastore, Datastore)
elif option == 'unlock:target':
res = isinstance(datastore, Datastore)
elif option == 'validate:source':
res = isinstance(datastore, (str, object, Datastore))
if not res:
err_msg = _get_datastore_errmsg(option, datastore)
raise YPYServiceError(error_msg=err_msg)
def normalize_meta(cls, capabilities, entity):
""" Get meta information from entity._meta_info(), modify and inject
i_meta attribute back to entity.
Args:
cls: First argument for class method
capabilities: List of capabilities get from provider
entity: An instance of YDK object
Returns:
entity: An instance of YDK object
Raises:
`YPYModelError <ydk.errors.html#ydk.errors.YPYModelError>`_ if
try to access an unsupported feature.
"""
if None in (capabilities, entity):
raise YPYServiceError(error_msg=_ERR_ARG_CHK)
deviation_tables = MetaService.get_active_deviation_tables(
capabilities, entity)
MetaService.inject_imeta(entity, deviation_tables)
return entity
