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# Copyright 2022-2025 ETSI SDG TeraFlowSDN (TFS) (https://tfs.etsi.org/)
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#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging, pytest
from common.Constants import DEFAULT_CONTEXT_NAME
from common.proto.context_pb2 import ContextId, Service
from common.tools.descriptor.Loader import DescriptorLoader, check_descriptor_load_results, validate_empty_scenario
from common.tools.grpc.Tools import grpc_message_to_json_string
from common.tools.object_factory.Context import json_context_id
from context.client.ContextClient import ContextClient
from device.client.DeviceClient import DeviceClient
from service.client.ServiceClient import ServiceClient
LOGGER = logging.getLogger(__name__)
LOGGER.setLevel(logging.DEBUG)
DESCRIPTOR_FILE = 'src/service/tests/descriptors_recompute_conns.json'
ADMIN_CONTEXT_ID = ContextId(**json_context_id(DEFAULT_CONTEXT_NAME))
@pytest.fixture(scope='session')
def context_client():
_client = ContextClient()
yield _client
_client.close()
@pytest.fixture(scope='session')
def device_client():
_client = DeviceClient()
yield _client
_client.close()
@pytest.fixture(scope='session')
def service_client():
_client = ServiceClient()
yield _client
_client.close()
def test_service_recompute_connection(
context_client : ContextClient, # pylint: disable=redefined-outer-name
device_client : DeviceClient, # pylint: disable=redefined-outer-name
service_client : ServiceClient, # pylint: disable=redefined-outer-name
) -> None:
# ===== Setup scenario =============================================================================================
validate_empty_scenario(context_client)
# Load descriptors and validate the base scenario
descriptor_loader = DescriptorLoader(
descriptors_file=DESCRIPTOR_FILE, context_client=context_client, device_client=device_client,
service_client=service_client)
results = descriptor_loader.process()
check_descriptor_load_results(results, descriptor_loader)
descriptor_loader.validate()
# ===== Recompute Connection =======================================================================================
response = context_client.ListServices(ADMIN_CONTEXT_ID)
LOGGER.info('Services[{:d}] = {:s}'.format(len(response.services), grpc_message_to_json_string(response)))
assert len(response.services) == 1
service = response.services[0]
service_id = service.service_id
response = context_client.ListConnections(service_id)
LOGGER.info(' ServiceId[{:s}] => Connections[{:d}] = {:s}'.format(
grpc_message_to_json_string(service_id), len(response.connections), grpc_message_to_json_string(response)))
assert len(response.connections) == 1 # 1 connection per service
str_old_connections = grpc_message_to_json_string(response)
# Change path first time
request = Service()
request.CopyFrom(service)
del request.service_endpoint_ids[:] # pylint: disable=no-member
del request.service_constraints[:] # pylint: disable=no-member
del request.service_config.config_rules[:] # pylint: disable=no-member
service_client.RecomputeConnections(request)
response = context_client.ListConnections(service_id)
LOGGER.info(' ServiceId[{:s}] => Connections[{:d}] = {:s}'.format(
grpc_message_to_json_string(service_id), len(response.connections), grpc_message_to_json_string(response)))
assert len(response.connections) == 1 # 1 connection per service
str_new_connections = grpc_message_to_json_string(response)
assert str_old_connections != str_new_connections
str_old_connections = str_new_connections
# Change path second time
request = Service()
request.CopyFrom(service)
del request.service_endpoint_ids[:] # pylint: disable=no-member
del request.service_constraints[:] # pylint: disable=no-member
del request.service_config.config_rules[:] # pylint: disable=no-member
service_client.RecomputeConnections(request)
response = context_client.ListConnections(service_id)
LOGGER.info(' ServiceId[{:s}] => Connections[{:d}] = {:s}'.format(
grpc_message_to_json_string(service_id), len(response.connections), grpc_message_to_json_string(response)))
assert len(response.connections) == 1 # 1 connection per service
str_new_connections = grpc_message_to_json_string(response)
assert str_old_connections != str_new_connections
# ===== Cleanup scenario ===========================================================================================
# Validate and unload the base scenario
descriptor_loader.validate()
descriptor_loader.unload()
validate_empty_scenario(context_client)