- Add get_service_path and get_device_name (2415fb2b) · Commits · TFS / nsc

src/api/main.py

+3 −15

Original line number	Diff line number	Diff line
		@@ -15,7 +15,7 @@
		# This file is an original contribution from Telefonica Innovación Digital S.L.

		from src.utils.send_response import send_response
		import logging, json, time, requests, traceback, asyncio, aiohttp
		import logging, json, asyncio
		from flask import current_app
		from src.database.db import get_data, delete_data, get_all_data, delete_all_data
		from src.database.service_db import delete_by_slice_id, get_data_by_slice_id
		@@ -26,7 +26,6 @@ from src.utils.safe_get import safe_get
		from src.database.sysrepo_store import get_data_store, create_data_store, delete_data_store, update_data_store, normalize_libyang_data
		from typing import Dict, Tuple
		from src.realizer.restconf.connectors.tfs_connector import tfs_connector as tfs_restconf_connector
		from src.planner.shortest_path import get_shortest_path
		from src.realizer.tfs.service_types.tfs_l2vpn import tfs_l2vpn_delete


		@@ -1158,12 +1157,6 @@ class Api:
		logging.debug(f"Getting telemetry for slice_id: {slice_id}")
		try:
		if slice_id is not None:
		slice_sdps = get_data_store(f"/ietf-network-slice-service:network-slice-services/slice-service[id='{slice_id}']/sdps")
		logging.debug(f"SDPs for slice_id '{slice_id}': {slice_sdps}")
		if not slice_sdps:
		raise ValueError("No SDPs found")
		if len(slice_sdps) > 2:
		raise Exception(f"Monitoring for more than 2 SDPs is not supported. Found {len(slice_sdps)} SDPs.")
		xpath = f"/ietf-network-slice-service:network-slice-services/slice-service[id='{slice_id}']"
		existing_slice = get_data_store(xpath)
		if not existing_slice:
		@@ -1174,7 +1167,7 @@ class Api:
		slo_sle_template = next(iter(slo_sle_template), None)
		if not slo_sle_template:
		raise ValueError(f"SLO/SLE template '{template_id}' not found for slice '{slice_id}'")
		metrics = self.slice_service.monitoring(slice_id, slo_sle_template, slice_sdps)
		metrics = self.slice_service.monitoring(slice_id, slo_sle_template)
		return metrics, 200

		telemetry_data = {}
		@@ -1191,12 +1184,7 @@ class Api:
		if not slo_sle_template:
		raise ValueError(f"SLO/SLE template '{selected_template_id}' not found for slice '{slice['id']}'")
		slice_id = slice["id"]
		slice_sdps = get_data_store(f"/ietf-network-slice-service:network-slice-services/slice-service[id='{slice_id}']/sdps")
		if not slice_sdps:
		raise ValueError("No SDPs found")
		if len(slice_sdps) > 2:
		raise Exception(f"Monitoring for more than 2 SDPs is not supported. Found {len(slice_sdps)} SDPs.")
		telemetry_data[slice_id] = self.slice_service.monitoring(slice_id, slo_sle_template, slice_sdps)
		telemetry_data[slice_id] = self.slice_service.monitoring(slice_id, slo_sle_template)
		return telemetry_data, 200

		except ValueError as e:

src/main.py

+2 −4

Original line number	Diff line number	Diff line
		@@ -23,7 +23,6 @@ from src.database.store_data import store_data
		from src.database.service_db import delete_data
		from src.mapper.main import mapper
		from src.realizer.main import realizer
		from src.planner.shortest_path import get_shortest_path
		from src.realizer.send_controller import send_controller

		class NSController:
		@@ -197,7 +196,7 @@ class NSController:
		"setup_time": setup_time
		}

		def monitoring(self, slice_id, slo_sle_template, sdps):
		def monitoring(self, slice_id, slo_sle_template):
		"""
		Monitor the status of a specific network slice.

		@@ -219,8 +218,7 @@ class NSController:
		"""
		payload = {
		"slice_id": slice_id,
		"slo_sle_template": slo_sle_template,
		"sdps": sdps
		"slo_sle_template": slo_sle_template
		}

		# Request the realizer to retrieve the metrics for the links of the specified slice

src/planner/shortest_path.py

+2 −2

Original line number	Diff line number	Diff line
		@@ -35,7 +35,7 @@ def get_shortest_path(network, src_node_id, dst_node_id, directed_graph: bool =
		nodes = network["node"]
		links = network["ietf-network-topology:link"]

		# Construir grafo
		# Build graph
		graph = {
		normalize_node_id(node["node-id"]): set()
		for node in nodes
		@@ -77,7 +77,7 @@ def get_shortest_path(network, src_node_id, dst_node_id, directed_graph: bool =
		if not visited[destination_node_idx]:
		return {"message": "No path found"}, 404

		# Reconstruir camino
		# Rebuild path
		path = []
		at = destination_node_idx

src/realizer/main.py

+10 −16

Original line number	Diff line number	Diff line
		@@ -19,7 +19,7 @@ from .select_way import select_way
		from .nrp_handler import nrp_handler
		from .get_metrics import get_metrics
		from src.utils.safe_get import safe_get
		from src.planner.shortest_path import get_shortest_path
		from src.database.service_db import get_data_by_slice_id
		from src.realizer.restconf.connectors.tfs_connector import tfs_connector
		from flask import current_app

		@@ -90,20 +90,14 @@ def realizer(payload, need_nrp=False, order=None, nrp=None, controller_type=None
		elif action == "MONITOR":
		logging.debug("Realizer action: MONITOR")
		slice_id = payload.get("slice_id", None)
		sdps = payload.get("sdps", None)
		sdps_object = safe_get(sdps, ['network-slice-services', 'slice-service'])
		sdps_object = sdps_object[slice_id]['sdps']['sdp']
		sdp_ids = [sdp["id"] for sdp in sdps_object]
		# Retrieve Network topology
		topology, response = tfs_connector().get_network_topology(current_app.config["RESTCONF_IP"],slice_id)
		service_data = get_data_by_slice_id(slice_id)
		if len(service_data) > 1:
		raise ValueError(f"Slices with multiple associated services are not supported: '{slice_id}'")
		service_id = service_data[0]["service_id"]
		# Retrieve Service Path
		path, response = tfs_connector().get_service_path(current_app.config["RESTCONF_IP"], service_id)
		if response == 200:
		logging.debug(f"Retrieved topology for slice '{slice_id}'")
		# Get shortest path
		path, response = get_shortest_path(topology, sdp_ids[0], sdp_ids[1])
		if response == 200:
		logging.debug(f"Retrieved shortest path for slice '{slice_id}': {path}")
		logging.debug(f"Retrieved service path for slice '{slice_id}' (service '{service_id}'): {path}")
		get_metrics(path, slice_id, controller_type)
		else:
		raise Exception("Error: Shortest path not retrieved ")
		else:
		raise Exception("Error: Topology not retrieved")
		No newline at end of file
		raise Exception("Error: Service path not retrieved")
		No newline at end of file

src/realizer/restconf/connectors/tfs_connector.py

+65 −1

Original line number	Diff line number	Diff line
		@@ -16,7 +16,7 @@

		import logging, requests, json, aiohttp, asyncio, threading
		from src.config.constants import NBI_L2_PATH, NBI_L3_PATH, NBI_IETF_NETWORKS_PATH, NBI_SIMAP_SUSCRIPTION_PATH
		from typing import Dict, Tuple
		from typing import Dict, Tuple, List

		# Temp until moving to .env
		SDN_SUBSCRIPTION_PERIOD = 10 # seconds
		@@ -141,6 +141,70 @@ class tfs_connector():

		return network, 200

		def get_device_name(self, tfs_ip: str, device_uuid: str) -> str:
		"""
		Get device name for a given device_uuid from TFS.

		Args:
		tfs_ip (str): IP address of the TFS instance
		device_uuid (str): Device UUID

		Returns:
		str: Name of the device
		"""
		url = f"http://{tfs_ip}/tfs-api/device/{device_uuid}"
		headers = {'accept': 'application/json'}
		response = requests.get(url, headers=headers, timeout=60)
		response.raise_for_status()
		device_data = response.json()
		return device_data.get("name", "")

		def get_service_path(self, tfs_ip: str, service_id: str) -> Tuple[List[str], int]:
		"""
		Get ordered list of node names along the service path from TFS.

		Args:
		tfs_ip (str): IP address of the TFS instance
		service_id (str): Service UUID

		Returns:
		Tuple[List[str], int]: List of node names in order and status code
		"""
		url = f'http://{tfs_ip}/tfs-api/context/admin/service/{service_id}/connections'
		headers = {'accept': 'application/json'}
		try:
		response = requests.get(url, headers=headers, timeout=60)
		if response.status_code == 200:
		data = response.json()
		connections = data.get("connections", [])
		raw_uuids = []
		for conn in connections:
		for hop in conn.get("path_hops_endpoint_ids", []):
		device_id = hop.get("device_id", {}).get("device_uuid", {}).get("uuid")
		if device_id and (not raw_uuids or raw_uuids[-1] != device_id):
		raw_uuids.append(device_id)

		name_cache = {}
		path = []
		for dev_uuid in raw_uuids:
		if dev_uuid not in name_cache:
		try:
		dev_name = self.get_device_name(tfs_ip, dev_uuid)
		name_cache[dev_uuid] = dev_name if dev_name else dev_uuid
		except Exception as e:
		logging.warning(f"Could not retrieve device name for '{dev_uuid}': {e}")
		name_cache[dev_uuid] = dev_uuid
		path.append(name_cache[dev_uuid])

		logging.debug(f"Retrieved service path for service '{service_id}': {path}")
		return path, 200
		else:
		logging.error(f"Failed to retrieve service path for service '{service_id}': status {response.status_code}")
		return [], response.status_code
		except Exception as e:
		logging.exception(f"Error retrieving service path for service '{service_id}': {e}")
		return [], 500

		# --- SDN STREAMS ---

		async def get_session(self):