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# Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (https://tfs.etsi.org/)
#
# 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 json, re
from typing import Dict, List, Optional
from common.proto.context_pb2 import ConfigRule
from common.tools.object_factory.ConfigRule import json_config_rule_set
SETTINGS_RULE_NAME = '/settings'
DEV_EP_SETTINGS = re.compile(r'\/device\[([^\]]+)\]\/endpoint\[([^\]]+)\]\/settings')
L2NM_SETTINGS_FIELD_DEFAULTS = {
'encapsulation_type': 'dot1q',
'vlan_id' : 100,
'mtu' : 1450,
}
L3NM_SETTINGS_FIELD_DEFAULTS = {
'encapsulation_type': 'dot1q',
'vlan_id' : 100,
'mtu' : 1450,
}
TAPI_SETTINGS_FIELD_DEFAULTS = {
'capacity_value' : 50.0,
'capacity_unit' : 'GHz',
'layer_proto_name': 'PHOTONIC_MEDIA',
'layer_proto_qual': 'tapi-photonic-media:PHOTONIC_LAYER_QUALIFIER_NMC',
'direction' : 'UNIDIRECTIONAL',
}
def find_custom_config_rule(config_rules : List, resource_name : str) -> Optional[Dict]:
resource_value : Optional[Dict] = None
for config_rule in config_rules:
if config_rule.WhichOneof('config_rule') != 'custom': continue
if config_rule.custom.resource_key != resource_name: continue
resource_value = json.loads(config_rule.custom.resource_value)
return resource_value
def compose_config_rules(
main_service_config_rules : List, subservice_config_rules : List, field_defaults : Dict
) -> None:
settings = find_custom_config_rule(main_service_config_rules, SETTINGS_RULE_NAME)
if settings is None: return
json_settings = {}
for field_name,default_value in field_defaults.items():
json_settings[field_name] = settings.get(field_name, default_value)
config_rule = ConfigRule(**json_config_rule_set('/settings', json_settings))
subservice_config_rules.append(config_rule)
def compose_l2nm_config_rules(main_service_config_rules : List, subservice_config_rules : List) -> None:
compose_config_rules(main_service_config_rules, subservice_config_rules, L2NM_SETTINGS_FIELD_DEFAULTS)
def compose_l3nm_config_rules(main_service_config_rules : List, subservice_config_rules : List) -> None:
compose_config_rules(main_service_config_rules, subservice_config_rules, L3NM_SETTINGS_FIELD_DEFAULTS)
def compose_tapi_config_rules(main_service_config_rules : List, subservice_config_rules : List) -> None:
compose_config_rules(main_service_config_rules, subservice_config_rules, TAPI_SETTINGS_FIELD_DEFAULTS)
def compose_device_config_rules(config_rules : List, subservice_config_rules : List, path_hops : List) -> None:
endpoints_traversed = set()
for path_hop in path_hops:
device_uuid_or_name = path_hop['device']
endpoints_traversed.add((device_uuid_or_name, path_hop['ingress_ep']))
endpoints_traversed.add((device_uuid_or_name, path_hop['egress_ep']))
for config_rule in config_rules:
if config_rule.WhichOneof('config_rule') != 'custom': continue
match = DEV_EP_SETTINGS.match(config_rule.custom.resource_key)
if match is None: continue
device_uuid_or_name = match.group(1)
endpoint_uuid_or_name = match.group(2)
dev_ep_kep = (device_uuid_or_name, endpoint_uuid_or_name)
if dev_ep_kep not in endpoints_traversed: continue
subservice_config_rules.append(config_rule)