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# Copyright 2022-2024 ETSI OSG/SDG TeraFlowSDN (TFS) (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 logging
from typing import Dict, List, Optional
import requests
from requests.auth import HTTPBasicAuth
from device.service.driver_api.ImportTopologyEnum import ImportTopologyEnum
GET_DEVICES_URL = "{:s}://{:s}:{:d}/tfs-api/devices"
GET_LINKS_URL = "{:s}://{:s}:{:d}/tfs-api/links"
IETF_SLICE_URL = "{:s}://{:s}:{:d}/restconf/data/ietf-network-slice-service:ietf-nss"
TIMEOUT = 30
HTTP_OK_CODES = {
200, # OK
201, # Created
202, # Accepted
204, # No Content
}
MAPPING_STATUS = {
"DEVICEOPERATIONALSTATUS_UNDEFINED": 0,
"DEVICEOPERATIONALSTATUS_DISABLED": 1,
"DEVICEOPERATIONALSTATUS_ENABLED": 2,
}
MAPPING_DRIVER = {
"DEVICEDRIVER_UNDEFINED": 0,
"DEVICEDRIVER_OPENCONFIG": 1,
"DEVICEDRIVER_TRANSPORT_API": 2,
"DEVICEDRIVER_P4": 3,
"DEVICEDRIVER_IETF_NETWORK_TOPOLOGY": 4,
"DEVICEDRIVER_ONF_TR_532": 5,
"DEVICEDRIVER_XR": 6,
"DEVICEDRIVER_IETF_L2VPN": 7,
"DEVICEDRIVER_GNMI_OPENCONFIG": 8,
"DEVICEDRIVER_OPTICAL_TFS": 9,
"DEVICEDRIVER_IETF_ACTN": 10,
"DEVICEDRIVER_OC": 11,
}
MSG_ERROR = "Could not retrieve devices in remote TeraFlowSDN instance({:s}). status_code={:s} reply={:s}"
LOGGER = logging.getLogger(__name__)
class TfsApiClient:
def __init__(
self,
address: str,
port: int,
scheme: str = "http",
username: Optional[str] = None,
password: Optional[str] = None,
) -> None:
self._devices_url = GET_DEVICES_URL.format(scheme, address, port)
self._links_url = GET_LINKS_URL.format(scheme, address, port)
self._slice_url = IETF_SLICE_URL.format(scheme, address, port)
self._auth = None
# (
# HTTPBasicAuth(username, password)
# if username is not None and password is not None
# else None
# )
# def get_devices_endpoints(
# self, import_topology: ImportTopologyEnum = ImportTopologyEnum.DEVICES
# ) -> List[Dict]:
# LOGGER.debug("[get_devices_endpoints] begin")
# LOGGER.debug(
# "[get_devices_endpoints] import_topology={:s}".format(str(import_topology))
# )
# reply = requests.get(self._devices_url, timeout=TIMEOUT, auth=self._auth)
# if reply.status_code not in HTTP_OK_CODES:
# msg = MSG_ERROR.format(
# str(self._devices_url), str(reply.status_code), str(reply)
# )
# LOGGER.error(msg)
# raise Exception(msg)
# if import_topology == ImportTopologyEnum.DISABLED:
# raise Exception(
# "Unsupported import_topology mode: {:s}".format(str(import_topology))
# )
# result = list()
# for json_device in reply.json()["devices"]:
# device_uuid: str = json_device["device_id"]["device_uuid"]["uuid"]
# device_type: str = json_device["device_type"]
# device_status = json_device["device_operational_status"]
# device_url = "/devices/device[{:s}]".format(device_uuid)
# device_data = {
# "uuid": json_device["device_id"]["device_uuid"]["uuid"],
# "name": json_device["name"],
# "type": device_type,
# "status": MAPPING_STATUS[device_status],
# "drivers": [
# MAPPING_DRIVER[driver] for driver in json_device["device_drivers"]
# ],
# }
# result.append((device_url, device_data))
# for json_endpoint in json_device["device_endpoints"]:
# endpoint_uuid = json_endpoint["endpoint_id"]["endpoint_uuid"]["uuid"]
# endpoint_url = "/endpoints/endpoint[{:s}]".format(endpoint_uuid)
# endpoint_data = {
# "device_uuid": device_uuid,
# "uuid": endpoint_uuid,
# "name": json_endpoint["name"],
# "type": json_endpoint["endpoint_type"],
# }
# result.append((endpoint_url, endpoint_data))
# if import_topology == ImportTopologyEnum.DEVICES:
# LOGGER.debug("[get_devices_endpoints] devices only; returning")
# return result
# reply = requests.get(self._links_url, timeout=TIMEOUT, auth=self._auth)
# if reply.status_code not in HTTP_OK_CODES:
# msg = MSG_ERROR.format(
# str(self._links_url), str(reply.status_code), str(reply)
# )
# LOGGER.error(msg)
# raise Exception(msg)
# for json_link in reply.json()["links"]:
# link_uuid: str = json_link["link_id"]["link_uuid"]["uuid"]
# link_url = "/links/link[{:s}]".format(link_uuid)
# link_endpoint_ids = [
# (
# json_endpoint_id["device_id"]["device_uuid"]["uuid"],
# json_endpoint_id["endpoint_uuid"]["uuid"],
# )
# for json_endpoint_id in json_link["link_endpoint_ids"]
# ]
# link_data = {
# "uuid": json_link["link_id"]["link_uuid"]["uuid"],
# "name": json_link["name"],
# "endpoints": link_endpoint_ids,
# }
# result.append((link_url, link_data))
# LOGGER.debug("[get_devices_endpoints] topology; returning")
# # return resu
def create_slice(self, slice_data: dict) -> None:
try:
requests.post(self._slice_url, json=slice_data)
except requests.exceptions.ConnectionError:
raise Exception("faild to send post request to TFS L3VPN NBI")
def delete_slice(self, slice_uuid: str) -> None:
url = self.__url + f"/vpn-service={slice_uuid}"
try:
requests.delete(url, auth=self._auth)
except requests.exceptions.ConnectionError:
raise Exception("faild to send delete request to TFS L3VPN NBI")