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Pedro Paulo Tavares
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import os
import json
import logging
import requests
import threading
from requests.auth import HTTPBasicAuth
from typing import Any, List, Optional, Tuple, Union
from common.method_wrappers.Decorator import MetricsPool, metered_subclass_method
from common.type_checkers.Checkers import chk_string, chk_type
from device.service.driver_api._Driver import _Driver
from .Tools2 import config_getter, create_connectivity_link
LOGGER = logging.getLogger(__name__)
DRIVER_NAME = 'qkd'
METRICS_POOL = MetricsPool('Device', 'Driver', labels={'driver': DRIVER_NAME})
class QKDDriver(_Driver):
def __init__(self, address: str, port: int, **settings) -> None:
LOGGER.info(f"Initializing QKDDriver with address={address}, port={port}, settings={settings}")
super().__init__(DRIVER_NAME, address, port, **settings)
self.__lock = threading.Lock()
self.__started = threading.Event()
self.__terminate = threading.Event()
self.__auth = None
self.__headers = {}
self.__qkd_root = os.getenv('QKD_API_URL', '{:s}://{:s}:{:d}'.format(settings.get('scheme', 'http'), self.address, int(self.port)))
self.__timeout = int(self.settings.get('timeout', 120))
self.__node_ids = set(self.settings.get('node_ids', []))
self.__initial_data = None
# Authentication settings
self.__username = settings.get('username')
self.__password = settings.get('password')
self.__use_jwt = settings.get('use_jwt', True) # Default to True if JWT is required
self.__token = settings.get('token')
if self.__token:
self.__headers = {'Authorization': 'Bearer ' + self.__token}
elif self.__username and self.__password:
self.__auth = HTTPBasicAuth(self.__username, self.__password)
LOGGER.info(f"QKDDriver initialized with QKD root URL: {self.__qkd_root}")
def authenticate(self) -> bool:
if self.__use_jwt and not self.__token:
return self.__authenticate_with_jwt()
return True
def __authenticate_with_jwt(self) -> bool:
login_url = f'{self.__qkd_root}/login'
payload = {'username': self.__username, 'password': self.__password}
try:
LOGGER.info(f'Attempting to authenticate with JWT at {login_url}')
response = requests.post(login_url, data=payload, timeout=self.__timeout)
response.raise_for_status()
token = response.json().get('access_token')
if not token:
LOGGER.error('Failed to retrieve access token')
return False
self.__token = token # Store the token
self.__headers = {'Authorization': f'Bearer {token}'}
LOGGER.info('JWT authentication successful')
return True
except requests.exceptions.RequestException as e:
LOGGER.exception(f'JWT authentication failed: {e}')
return False
def Connect(self) -> bool:
url = self.__qkd_root + '/restconf/data/etsi-qkd-sdn-node:qkd_node'
with self.__lock:
LOGGER.info(f"Starting connection to {url}")
if self.__started.is_set():
LOGGER.info("Already connected, skipping re-connection.")
return True
try:
if not self.__headers and not self.__auth:
LOGGER.info("No headers or auth found, calling authenticate.")
if not self.authenticate():
return False
LOGGER.info(f'Attempting to connect to {url} with headers {self.__headers} and timeout {self.__timeout}')
response = requests.get(url, timeout=self.__timeout, verify=False, headers=self.__headers, auth=self.__auth)
LOGGER.info(f'Received response: {response.status_code}, content: {response.text}')
response.raise_for_status()
self.__initial_data = response.json()
self.__started.set()
LOGGER.info('Connection successful')
return True
except requests.exceptions.RequestException as e:
LOGGER.error(f'Connection failed: {e}')
return False
def Disconnect(self) -> bool:
LOGGER.info("Disconnecting QKDDriver")
with self.__lock:
self.__terminate.set()
LOGGER.info("QKDDriver disconnected successfully")
return True
@metered_subclass_method(METRICS_POOL)
def GetInitialConfig(self) -> List[Tuple[str, Any]]:
LOGGER.info("Getting initial configuration")
with self.__lock:
if isinstance(self.__initial_data, dict):
initial_config = [('qkd_node', self.__initial_data.get('qkd_node', {}))]
LOGGER.info(f"Initial configuration: {initial_config}")
return initial_config
LOGGER.warning("Initial data is not a dictionary")
return []
@metered_subclass_method(METRICS_POOL)
def GetConfig(self, resource_keys: List[str] = []) -> List[Tuple[str, Union[Any, None, Exception]]]:
chk_type('resources', resource_keys, list)
LOGGER.info(f"Getting configuration for resource_keys: {resource_keys}")
results = []
with self.__lock:
if not resource_keys:
resource_keys = ['capabilities', 'interfaces', 'links', 'endpoints', 'apps']
for i, resource_key in enumerate(resource_keys):
chk_string(f'resource_key[{i}]', resource_key, allow_empty=False)
LOGGER.info(f"Retrieving resource key: {resource_key}")
resource_results = config_getter(
self.__qkd_root, resource_key, timeout=self.__timeout, headers=self.__headers, auth=self.__auth,
node_ids=self.__node_ids)
results.extend(resource_results)
LOGGER.info(f"Resource results for {resource_key}: {resource_results}")
LOGGER.info(f"Final configuration results: {results}")
return results
@metered_subclass_method(METRICS_POOL)
def SetConfig(self, resources: List[Tuple[str, Any]]) -> List[Union[bool, Exception]]:
LOGGER.info(f"Setting configuration for resources: {resources}")
results = []
if not resources:
LOGGER.warning("No resources provided for SetConfig")
return results
with self.__lock:
for resource_key, resource_value in resources:
LOGGER.info(f'Processing resource_key: {resource_key}, resource_value: {resource_value}')
if resource_key.startswith('/link'):
try:
if not isinstance(resource_value, dict):
raise TypeError(f"Expected dictionary but got {type(resource_value).__name__}")
link_uuid = resource_value.get('uuid')
node_id_src = resource_value.get('src_qkdn_id')
interface_id_src = resource_value.get('src_interface_id')
node_id_dst = resource_value.get('dst_qkdn_id')
interface_id_dst = resource_value.get('dst_interface_id')
virt_prev_hop = resource_value.get('virt_prev_hop')
virt_next_hops = resource_value.get('virt_next_hops')
virt_bandwidth = resource_value.get('virt_bandwidth')
LOGGER.info(f"Creating connectivity link with UUID: {link_uuid}")
create_connectivity_link(
self.__qkd_root, link_uuid, node_id_src, interface_id_src, node_id_dst, interface_id_dst,
virt_prev_hop, virt_next_hops, virt_bandwidth,
headers=self.__headers, timeout=self.__timeout, auth=self.__auth
)
results.append(True)
LOGGER.info(f"Connectivity link {link_uuid} created successfully")
except Exception as e:
LOGGER.exception(f'Unhandled error processing resource_key({resource_key})')
results.append(e)
else:
LOGGER.error(f'Invalid resource key detected: {resource_key}')
results.append(ValueError(f'Invalid resource key: {resource_key}'))
LOGGER.info(f"SetConfig results: {results}")
return results
@metered_subclass_method(METRICS_POOL)
def DeleteConfig(self, resources: List[Tuple[str, Any]]) -> List[Union[bool, Exception]]:
LOGGER.info(f"Deleting configuration for resources: {resources}")
results = []
if not resources:
LOGGER.warning("No resources provided for DeleteConfig")
return results
with self.__lock:
for resource in resources:
LOGGER.info(f'Resource to delete: {resource}')
uuid = resource[1].get('uuid')
if uuid:
LOGGER.info(f'Resource with UUID {uuid} deleted successfully')
results.append(True)
else:
LOGGER.warning(f"UUID not found in resource: {resource}")
results.append(False)
LOGGER.info(f"DeleteConfig results: {results}")
return results
@metered_subclass_method(METRICS_POOL)
def SubscribeState(self, subscriptions: List[Tuple[str, float, float]]) -> List[Union[bool, Exception]]:
LOGGER.info(f"Subscribing to state updates: {subscriptions}")
results = [True for _ in subscriptions]
LOGGER.info(f"Subscription results: {results}")
return results
@metered_subclass_method(METRICS_POOL)
def UnsubscribeState(self, subscriptions: List[Tuple[str, float, float]]) -> List[Union[bool, Exception]]:
LOGGER.info(f"Unsubscribing from state updates: {subscriptions}")
results = [True for _ in subscriptions]
LOGGER.info(f"Unsubscription results: {results}")
return results
@metered_subclass_method(METRICS_POOL)
def GetState(self, blocking=False, terminate: Optional[threading.Event] = None) -> Union[dict, list]:
LOGGER.info(f"GetState called with blocking={blocking}, terminate={terminate}")
url = self.__qkd_root + '/restconf/data/etsi-qkd-sdn-node:qkd_node'
try:
LOGGER.info(f"Making GET request to {url} to retrieve state")
response = requests.get(url, timeout=self.__timeout, verify=False, headers=self.__headers, auth=self.__auth)
LOGGER.info(f"Received state response: {response.status_code}, content: {response.text}")
response.raise_for_status()
state_data = response.json()
LOGGER.info(f"State data retrieved: {state_data}")
return state_data
except requests.exceptions.Timeout:
LOGGER.error(f'Timeout getting state from {self.__qkd_root}')
return []
except Exception as e:
LOGGER.error(f'Exception getting state from {self.__qkd_root}: {e}')
return []