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"""Main module of kytos/topology Kytos Network Application. |
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Manage the network topology |
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""" |
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# pylint: disable=wrong-import-order |
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import pathlib |
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import time |
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from collections import defaultdict |
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from contextlib import ExitStack |
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from datetime import timezone |
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from threading import Lock |
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from typing import Iterable, List, Optional |
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import httpx |
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import tenacity |
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from tenacity import (retry_if_exception_type, stop_after_attempt, |
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wait_combine, wait_fixed, wait_random) |
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from kytos.core import KytosEvent, KytosNApp, log, rest |
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from kytos.core.common import EntityStatus, GenericEntity |
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from kytos.core.exceptions import (KytosInvalidTagRanges, |
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KytosLinkCreationError, KytosTagError) |
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from kytos.core.helpers import listen_to, load_spec, now, validate_openapi |
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from kytos.core.interface import Interface |
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from kytos.core.link import Link |
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from kytos.core.rest_api import (HTTPException, JSONResponse, Request, |
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content_type_json_or_415, get_json_or_400) |
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from kytos.core.retry import before_sleep |
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from kytos.core.switch import Switch |
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from kytos.core.tag_ranges import get_tag_ranges |
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from napps.kytos.topology import settings |
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from .controllers import TopoController |
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from .exceptions import RestoreError |
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from .models import Topology |
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DEFAULT_LINK_UP_TIMER = 10 |
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class Main(KytosNApp): # pylint: disable=too-many-public-methods |
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"""Main class of kytos/topology NApp. |
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This class is the entry point for this napp. |
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""" |
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spec = load_spec(pathlib.Path(__file__).parent / "openapi.yml") |
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def setup(self): |
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"""Initialize the NApp's links list.""" |
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self.link_up_timer = getattr(settings, 'LINK_UP_TIMER', |
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DEFAULT_LINK_UP_TIMER) |
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# to keep track of potential unorded scheduled interface events |
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self._intfs_lock = defaultdict(Lock) |
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self._intfs_updated_at = {} |
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self._intfs_tags_updated_at = {} |
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self.link_up = set() |
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self.link_status_lock = Lock() |
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self._switch_lock = defaultdict(Lock) |
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self.topo_controller = self.get_topo_controller() |
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# Track when we last received a link up, that resulted in |
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# activating a deactivated link. |
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self.link_status_change = defaultdict[str, dict](dict) |
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Link.register_status_func(f"{self.napp_id}_link_up_timer", |
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self.link_status_hook_link_up_timer) |
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self.topo_controller.bootstrap_indexes() |
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self.load_topology() |
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@staticmethod |
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def get_topo_controller() -> TopoController: |
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"""Get TopoController.""" |
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return TopoController() |
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def execute(self): |
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"""Execute once when the napp is running.""" |
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pass |
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def shutdown(self): |
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"""Do nothing.""" |
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log.info('NApp kytos/topology shutting down.') |
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def _get_metadata(self, request: Request) -> dict: |
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"""Return a JSON with metadata.""" |
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content_type_json_or_415(request) |
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metadata = get_json_or_400(request, self.controller.loop) |
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if not isinstance(metadata, dict): |
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raise HTTPException(400, "Invalid metadata value: {metadata}") |
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return metadata |
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def _get_switches_dict(self): |
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"""Return a dictionary with the known switches.""" |
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switches = {'switches': {}} |
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for idx, switch in enumerate(self.controller.switches.copy().values()): |
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switch_data = switch.as_dict() |
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if not all(key in switch_data['metadata'] |
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for key in ('lat', 'lng')): |
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# Switches are initialized somewhere in the ocean |
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switch_data['metadata']['lat'] = str(0.0) |
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switch_data['metadata']['lng'] = str(-30.0+idx*10.0) |
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switches['switches'][switch.id] = switch_data |
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return switches |
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def _get_links_dict(self): |
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"""Return a dictionary with the known links.""" |
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return {'links': {link.id: link.as_dict() for link in |
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self.controller.links.copy().values()}} |
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def _get_topology_dict(self): |
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"""Return a dictionary with the known topology.""" |
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return {'topology': {**self._get_switches_dict(), |
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**self._get_links_dict()}} |
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def _get_topology(self): |
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"""Return an object representing the topology.""" |
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return Topology( |
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self.controller.switches.copy(), self.controller.links.copy() |
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) |
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def _load_link(self, link_att): |
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endpoint_a = link_att['endpoint_a']['id'] |
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endpoint_b = link_att['endpoint_b']['id'] |
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link_str = link_att['id'] |
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log.info(f"Loading link: {link_str}") |
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interface_a = self.controller.get_interface_by_id(endpoint_a) |
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interface_b = self.controller.get_interface_by_id(endpoint_b) |
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error = f"Fail to load endpoints for link {link_str}. " |
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if not interface_a: |
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raise RestoreError(f"{error}, endpoint_a {endpoint_a} not found") |
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if not interface_b: |
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raise RestoreError(f"{error}, endpoint_b {endpoint_b} not found") |
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link, _ = self.controller.get_link_or_create(interface_a, interface_b) |
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link.extend_metadata(link_att["metadata"]) |
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def _load_switch(self, switch_id, switch_att): |
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log.info(f'Loading switch dpid: {switch_id}') |
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switch = self.controller.get_switch_or_create(switch_id) |
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if switch_att['enabled']: |
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switch.enable() |
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else: |
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switch.disable() |
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switch.description['manufacturer'] = switch_att.get('manufacturer', '') |
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switch.description['hardware'] = switch_att.get('hardware', '') |
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switch.description['software'] = switch_att.get('software') |
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switch.description['serial'] = switch_att.get('serial', '') |
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switch.description['data_path'] = switch_att.get('data_path', '') |
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switch.extend_metadata(switch_att["metadata"]) |
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for iface_id, iface_att in switch_att.get('interfaces', {}).items(): |
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log.info(f'Loading interface iface_id={iface_id}') |
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interface = switch.update_or_create_interface( |
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port_no=iface_att['port_number'], |
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name=iface_att['name'], |
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address=iface_att.get('mac', None), |
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speed=iface_att.get('speed', None)) |
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if iface_att['enabled']: |
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interface.enable() |
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else: |
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interface.disable() |
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interface.lldp = iface_att['lldp'] |
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interface.extend_metadata(iface_att["metadata"]) |
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interface.deactivate() |
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name = 'kytos/topology.port.created' |
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event = KytosEvent(name=name, content={ |
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'switch': switch_id, |
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'port': interface.port_number, |
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'port_description': { |
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'alias': interface.name, |
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'mac': interface.address, |
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'state': interface.state |
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} |
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}) |
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self.controller.buffers.app.put(event, timeout=1) |
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intf_ids = [v["id"] for v in switch_att.get("interfaces", {}).values()] |
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intf_details = self.topo_controller.get_interfaces_details(intf_ids) |
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self.load_interfaces_tags_values(switch, intf_details) |
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182
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# pylint: disable=attribute-defined-outside-init |
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def load_topology(self): |
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"""Load network topology from DB.""" |
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topology = self.topo_controller.get_topology() |
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switches = topology["topology"]["switches"] |
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links = topology["topology"]["links"] |
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1 |
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failed_switches = {} |
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log.debug(f"_load_network_status switches={switches}") |
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191
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1 |
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for switch_id, switch_att in switches.items(): |
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1 |
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try: |
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self._load_switch(switch_id, switch_att) |
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1 |
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except (KeyError, AttributeError, TypeError) as err: |
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195
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1 |
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failed_switches[switch_id] = err |
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196
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log.error(f'Error loading switch: {err}') |
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197
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198
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1 |
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failed_links = {} |
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199
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1 |
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log.debug(f"_load_network_status links={links}") |
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200
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1 |
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for link_id, link_att in links.items(): |
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201
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1 |
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try: |
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202
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1 |
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self._load_link(link_att) |
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203
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1 |
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except (KeyError, AttributeError, TypeError) as err: |
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204
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1 |
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failed_links[link_id] = err |
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205
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1 |
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log.error(f'Error loading link {link_id}: {err}') |
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206
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207
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1 |
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name = 'kytos/topology.topology_loaded' |
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208
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1 |
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event = KytosEvent( |
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name=name, |
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content={ |
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'topology': self._get_topology(), |
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'failed_switches': failed_switches, |
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'failed_links': failed_links |
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}) |
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215
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1 |
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self.controller.buffers.app.put(event, timeout=1) |
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216
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217
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1 |
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@rest('v3/') |
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218
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1 |
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def get_topology(self, _request: Request) -> JSONResponse: |
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219
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"""Return the latest known topology. |
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220
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221
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This topology is updated when there are network events. |
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222
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""" |
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223
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1 |
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return JSONResponse(self._get_topology_dict()) |
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224
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225
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# Switch related methods |
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226
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1 |
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@rest('v3/switches') |
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227
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1 |
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def get_switches(self, _request: Request) -> JSONResponse: |
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228
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"""Return a json with all the switches in the topology.""" |
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229
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return JSONResponse(self._get_switches_dict()) |
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230
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231
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1 |
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@rest('v3/switches/{dpid}/enable', methods=['POST']) |
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232
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1 |
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def enable_switch(self, request: Request) -> JSONResponse: |
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233
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"""Administratively enable a switch in the topology.""" |
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234
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1 |
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dpid = request.path_params["dpid"] |
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235
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1 |
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try: |
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236
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1 |
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switch = self.controller.switches[dpid] |
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237
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1 |
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self.topo_controller.enable_switch(dpid) |
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238
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1 |
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switch.enable() |
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239
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1 |
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except KeyError: |
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240
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1 |
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raise HTTPException(404, detail="Switch not found") |
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241
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242
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1 |
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self.notify_topology_update() |
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243
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1 |
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self.notify_switch_enabled(dpid) |
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244
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1 |
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self.notify_switch_links_status(switch, "link enabled") |
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245
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1 |
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return JSONResponse("Operation successful", status_code=201) |
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246
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247
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1 |
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@rest('v3/switches/{dpid}/disable', methods=['POST']) |
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248
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1 |
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def disable_switch(self, request: Request) -> JSONResponse: |
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249
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"""Administratively disable a switch in the topology.""" |
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250
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1 |
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dpid = request.path_params["dpid"] |
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251
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1 |
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try: |
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252
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1 |
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switch = self.controller.switches[dpid] |
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253
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1 |
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link_ids = set() |
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254
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1 |
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with ExitStack() as stack: |
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255
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1 |
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for _, interface in switch.interfaces.copy().items(): |
|
256
|
1 |
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if (interface.link and interface.link.is_enabled()): |
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257
|
1 |
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stack.enter_context(interface.link.link_lock) |
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258
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1 |
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link_ids.add(interface.link.id) |
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259
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1 |
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interface.link.disable() |
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260
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1 |
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self.notify_link_enabled_state( |
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261
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interface.link, "disabled" |
|
262
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) |
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263
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1 |
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self.topo_controller.bulk_disable_links(link_ids) |
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264
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1 |
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self.topo_controller.disable_switch(dpid) |
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265
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1 |
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switch.disable() |
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266
|
1 |
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except KeyError: |
|
267
|
1 |
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raise HTTPException(404, detail="Switch not found") |
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268
|
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|
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269
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1 |
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self.notify_topology_update() |
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270
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1 |
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self.notify_switch_disabled(dpid) |
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271
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1 |
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self.notify_switch_links_status(switch, "link disabled") |
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272
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1 |
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return JSONResponse("Operation successful", status_code=201) |
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273
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|
|
274
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1 |
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@rest('v3/switches/{dpid}', methods=['DELETE']) |
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275
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1 |
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def delete_switch(self, request: Request) -> JSONResponse: |
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276
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"""Delete a switch. |
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277
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|
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|
278
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|
Requirements: |
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279
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- There should not be installed flows related to switch. |
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280
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- The switch should be disabled. |
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281
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- All tags from switch interfaces should be available. |
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282
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- The switch should not have links. |
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283
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""" |
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284
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1 |
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dpid = request.path_params["dpid"] |
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285
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1 |
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try: |
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286
|
1 |
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switch: Switch = self.controller.switches[dpid] |
|
287
|
1 |
|
with self._switch_lock[dpid]: |
|
288
|
1 |
|
if switch.status != EntityStatus.DISABLED: |
|
289
|
1 |
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raise HTTPException( |
|
290
|
|
|
409, detail="Switch should be disabled." |
|
291
|
|
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) |
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292
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1 |
|
for intf_id, interface in switch.interfaces.copy().items(): |
|
293
|
1 |
|
if not interface.all_tags_available(): |
|
294
|
1 |
|
detail = f"Interface {intf_id} vlans are being used."\ |
|
295
|
|
|
" Delete any service using vlans." |
|
296
|
1 |
|
raise HTTPException(409, detail=detail) |
|
297
|
1 |
|
with self.controller.links_lock: |
|
298
|
1 |
|
for link_id, link in self.controller.links.copy().items(): |
|
299
|
1 |
|
if (dpid in |
|
300
|
|
|
(link.endpoint_a.switch.dpid, |
|
301
|
|
|
link.endpoint_b.switch.dpid)): |
|
302
|
1 |
|
raise HTTPException( |
|
303
|
|
|
409, detail=f"Switch should not have links. " |
|
304
|
|
|
f"Link found {link_id}." |
|
305
|
|
|
) |
|
306
|
1 |
|
try: |
|
307
|
1 |
|
flows = self.get_flows_by_switch(dpid) |
|
308
|
|
|
except tenacity.RetryError as err: |
|
309
|
|
|
detail = "Error while getting flows: "\ |
|
310
|
|
|
f"{err.last_attempt.exception()}." |
|
311
|
|
|
raise HTTPException(409, detail=detail) |
|
312
|
1 |
|
if flows: |
|
313
|
|
|
raise HTTPException(409, detail="Switch has flows. Verify" |
|
314
|
|
|
" if a switch is used.") |
|
315
|
1 |
|
switch = self.controller.switches.pop(dpid) |
|
316
|
1 |
|
self.topo_controller.delete_switch_data(dpid) |
|
317
|
1 |
|
except KeyError: |
|
318
|
1 |
|
raise HTTPException(404, detail="Switch not found.") |
|
319
|
1 |
|
name = 'kytos/topology.switch.deleted' |
|
320
|
1 |
|
event = KytosEvent(name=name, content={'switch': switch}) |
|
321
|
1 |
|
self.controller.buffers.app.put(event) |
|
322
|
1 |
|
self.notify_topology_update() |
|
323
|
1 |
|
return JSONResponse("Operation successful") |
|
324
|
|
|
|
|
325
|
1 |
|
@rest('v3/switches/{dpid}/metadata') |
|
326
|
1 |
|
def get_switch_metadata(self, request: Request) -> JSONResponse: |
|
327
|
|
|
"""Get metadata from a switch.""" |
|
328
|
1 |
|
dpid = request.path_params["dpid"] |
|
329
|
1 |
|
try: |
|
330
|
1 |
|
metadata = self.controller.switches[dpid].metadata |
|
331
|
1 |
|
return JSONResponse({"metadata": metadata}) |
|
332
|
1 |
|
except KeyError: |
|
333
|
1 |
|
raise HTTPException(404, detail="Switch not found") |
|
334
|
|
|
|
|
335
|
1 |
|
@rest('v3/switches/{dpid}/metadata', methods=['POST']) |
|
336
|
1 |
|
def add_switch_metadata(self, request: Request) -> JSONResponse: |
|
337
|
|
|
"""Add metadata to a switch.""" |
|
338
|
1 |
|
dpid = request.path_params["dpid"] |
|
339
|
1 |
|
metadata = self._get_metadata(request) |
|
340
|
1 |
|
try: |
|
341
|
1 |
|
switch = self.controller.switches[dpid] |
|
342
|
1 |
|
except KeyError: |
|
343
|
1 |
|
raise HTTPException(404, detail="Switch not found") |
|
344
|
|
|
|
|
345
|
1 |
|
self.topo_controller.add_switch_metadata(dpid, metadata) |
|
346
|
1 |
|
switch.extend_metadata(metadata) |
|
347
|
1 |
|
self.notify_metadata_changes(switch, 'added') |
|
348
|
1 |
|
return JSONResponse("Operation successful", status_code=201) |
|
349
|
|
|
|
|
350
|
1 |
|
@rest('v3/switches/{dpid}/metadata/{key}', methods=['DELETE']) |
|
351
|
1 |
|
def delete_switch_metadata(self, request: Request) -> JSONResponse: |
|
352
|
|
|
"""Delete metadata from a switch.""" |
|
353
|
1 |
|
dpid = request.path_params["dpid"] |
|
354
|
1 |
|
key = request.path_params["key"] |
|
355
|
1 |
|
try: |
|
356
|
1 |
|
switch = self.controller.switches[dpid] |
|
357
|
1 |
|
except KeyError: |
|
358
|
1 |
|
raise HTTPException(404, detail="Switch not found") |
|
359
|
|
|
|
|
360
|
1 |
|
try: |
|
361
|
1 |
|
_ = switch.metadata[key] |
|
362
|
1 |
|
except KeyError: |
|
363
|
1 |
|
raise HTTPException(404, "Metadata not found") |
|
364
|
|
|
|
|
365
|
1 |
|
self.topo_controller.delete_switch_metadata_key(dpid, key) |
|
366
|
1 |
|
switch.remove_metadata(key) |
|
367
|
1 |
|
self.notify_metadata_changes(switch, 'removed') |
|
368
|
1 |
|
return JSONResponse("Operation successful") |
|
369
|
|
|
|
|
370
|
|
|
# Interface related methods |
|
371
|
1 |
|
@rest('v3/interfaces') |
|
372
|
1 |
|
def get_interfaces(self, _request: Request) -> JSONResponse: |
|
373
|
|
|
"""Return a json with all the interfaces in the topology.""" |
|
374
|
1 |
|
interfaces = {} |
|
375
|
1 |
|
switches = self._get_switches_dict() |
|
376
|
1 |
|
for switch in switches['switches'].values(): |
|
377
|
1 |
|
for interface_id, interface in switch['interfaces'].items(): |
|
378
|
1 |
|
interfaces[interface_id] = interface |
|
379
|
|
|
|
|
380
|
1 |
|
return JSONResponse({'interfaces': interfaces}) |
|
381
|
|
|
|
|
382
|
1 |
|
@rest('v3/interfaces/switch/{dpid}/enable', methods=['POST']) |
|
383
|
1 |
|
@rest('v3/interfaces/{interface_enable_id}/enable', methods=['POST']) |
|
384
|
1 |
|
def enable_interface(self, request: Request) -> JSONResponse: |
|
385
|
|
|
"""Administratively enable interfaces in the topology.""" |
|
386
|
1 |
|
interface_enable_id = request.path_params.get("interface_enable_id") |
|
387
|
1 |
|
dpid = request.path_params.get("dpid") |
|
388
|
1 |
|
if dpid is None: |
|
389
|
1 |
|
dpid = ":".join(interface_enable_id.split(":")[:-1]) |
|
390
|
1 |
|
try: |
|
391
|
1 |
|
switch = self.controller.switches[dpid] |
|
392
|
1 |
|
if not switch.is_enabled(): |
|
393
|
1 |
|
raise HTTPException(409, detail="Enable Switch first") |
|
394
|
1 |
|
except KeyError: |
|
395
|
1 |
|
raise HTTPException(404, detail="Switch not found") |
|
396
|
|
|
|
|
397
|
1 |
|
if interface_enable_id: |
|
398
|
1 |
|
interface_number = int(interface_enable_id.split(":")[-1]) |
|
399
|
|
|
|
|
400
|
1 |
|
try: |
|
401
|
1 |
|
interface = switch.interfaces[interface_number] |
|
402
|
1 |
|
self.topo_controller.enable_interface(interface.id) |
|
403
|
1 |
|
interface.enable() |
|
404
|
1 |
|
if interface.link: |
|
405
|
1 |
|
with interface.link.link_lock: |
|
406
|
1 |
|
self._notify_interface_link_status( |
|
407
|
|
|
[interface], "link enabled" |
|
408
|
|
|
) |
|
409
|
1 |
|
except KeyError: |
|
410
|
1 |
|
msg = f"Switch {dpid} interface {interface_number} not found" |
|
411
|
1 |
|
raise HTTPException(404, detail=msg) |
|
412
|
|
|
else: |
|
413
|
1 |
|
for interface in switch.interfaces.copy().values(): |
|
414
|
1 |
|
interface.enable() |
|
415
|
1 |
|
if interface.link: |
|
416
|
1 |
|
with interface.link.link_lock: |
|
417
|
1 |
|
self._notify_interface_link_status( |
|
418
|
|
|
[interface], "link enabled" |
|
419
|
|
|
) |
|
420
|
1 |
|
self.topo_controller.upsert_switch(switch.id, switch.as_dict()) |
|
421
|
1 |
|
self.notify_topology_update() |
|
422
|
1 |
|
return JSONResponse("Operation successful") |
|
423
|
|
|
|
|
424
|
1 |
|
@rest('v3/interfaces/switch/{dpid}/disable', methods=['POST']) |
|
425
|
1 |
|
@rest('v3/interfaces/{interface_disable_id}/disable', methods=['POST']) |
|
426
|
1 |
|
def disable_interface(self, request: Request) -> JSONResponse: |
|
427
|
|
|
"""Administratively disable interfaces in the topology.""" |
|
428
|
1 |
|
interface_disable_id = request.path_params.get("interface_disable_id") |
|
429
|
1 |
|
dpid = request.path_params.get("dpid") |
|
430
|
1 |
|
if dpid is None: |
|
431
|
1 |
|
dpid = ":".join(interface_disable_id.split(":")[:-1]) |
|
432
|
1 |
|
try: |
|
433
|
1 |
|
switch = self.controller.switches[dpid] |
|
434
|
1 |
|
except KeyError: |
|
435
|
1 |
|
raise HTTPException(404, detail="Switch not found") |
|
436
|
|
|
|
|
437
|
1 |
|
interfaces: list[Interface] = [] |
|
438
|
1 |
|
if interface_disable_id: |
|
439
|
1 |
|
try: |
|
440
|
1 |
|
interface_number = int(interface_disable_id.split(":")[-1]) |
|
441
|
1 |
|
interfaces = [switch.interfaces[interface_number]] |
|
442
|
1 |
|
self.topo_controller.disable_interface(interfaces[0].id) |
|
443
|
1 |
|
except KeyError: |
|
444
|
1 |
|
msg = f"Switch {dpid} interface {interface_number} not found" |
|
445
|
1 |
|
raise HTTPException(404, detail=msg) |
|
446
|
|
|
else: |
|
447
|
1 |
|
interfaces = switch.interfaces.copy().values() |
|
448
|
|
|
|
|
449
|
1 |
|
link_ids: set[Link] = set() |
|
450
|
1 |
|
with ExitStack() as stack: |
|
451
|
1 |
|
for interface in interfaces: |
|
452
|
1 |
|
if interface.link and interface.link.is_enabled(): |
|
453
|
1 |
|
stack.enter_context(interface.link.link_lock) |
|
454
|
1 |
|
link_ids.add(interface.link.id) |
|
455
|
1 |
|
interface.link.disable() |
|
456
|
1 |
|
self.notify_link_enabled_state(interface.link, "disabled") |
|
457
|
1 |
|
interface.disable() |
|
458
|
1 |
|
self._notify_interface_link_status(interfaces, "link disabled") |
|
459
|
1 |
|
self.topo_controller.bulk_disable_links(link_ids) |
|
460
|
|
|
|
|
461
|
1 |
|
if not interface_disable_id: |
|
462
|
1 |
|
self.topo_controller.upsert_switch(switch.id, switch.as_dict()) |
|
463
|
|
|
|
|
464
|
1 |
|
self.notify_topology_update() |
|
465
|
1 |
|
return JSONResponse("Operation successful") |
|
466
|
|
|
|
|
467
|
1 |
|
@rest('v3/interfaces/{interface_id}/metadata') |
|
468
|
1 |
|
def get_interface_metadata(self, request: Request) -> JSONResponse: |
|
469
|
|
|
"""Get metadata from an interface.""" |
|
470
|
1 |
|
interface_id = request.path_params["interface_id"] |
|
471
|
1 |
|
switch_id = ":".join(interface_id.split(":")[:-1]) |
|
472
|
1 |
|
interface_number = int(interface_id.split(":")[-1]) |
|
473
|
1 |
|
try: |
|
474
|
1 |
|
switch = self.controller.switches[switch_id] |
|
475
|
1 |
|
except KeyError: |
|
476
|
1 |
|
raise HTTPException(404, detail="Switch not found") |
|
477
|
|
|
|
|
478
|
1 |
|
try: |
|
479
|
1 |
|
interface = switch.interfaces[interface_number] |
|
480
|
1 |
|
except KeyError: |
|
481
|
1 |
|
raise HTTPException(404, detail="Interface not found") |
|
482
|
|
|
|
|
483
|
1 |
|
return JSONResponse({"metadata": interface.metadata}) |
|
484
|
|
|
|
|
485
|
1 |
|
@rest('v3/interfaces/{interface_id}/metadata', methods=['POST']) |
|
486
|
1 |
|
def add_interface_metadata(self, request: Request) -> JSONResponse: |
|
487
|
|
|
"""Add metadata to an interface.""" |
|
488
|
1 |
|
interface_id = request.path_params["interface_id"] |
|
489
|
1 |
|
metadata = self._get_metadata(request) |
|
490
|
1 |
|
switch_id = ":".join(interface_id.split(":")[:-1]) |
|
491
|
1 |
|
interface_number = int(interface_id.split(":")[-1]) |
|
492
|
1 |
|
try: |
|
493
|
1 |
|
switch = self.controller.switches[switch_id] |
|
494
|
1 |
|
except KeyError: |
|
495
|
1 |
|
raise HTTPException(404, detail="Switch not found") |
|
496
|
|
|
|
|
497
|
1 |
|
try: |
|
498
|
1 |
|
interface = switch.interfaces[interface_number] |
|
499
|
1 |
|
self.topo_controller.add_interface_metadata(interface.id, metadata) |
|
500
|
1 |
|
except KeyError: |
|
501
|
1 |
|
raise HTTPException(404, detail="Interface not found") |
|
502
|
|
|
|
|
503
|
1 |
|
interface.extend_metadata(metadata) |
|
504
|
1 |
|
self.notify_metadata_changes(interface, 'added') |
|
505
|
1 |
|
return JSONResponse("Operation successful", status_code=201) |
|
506
|
|
|
|
|
507
|
1 |
|
@rest('v3/interfaces/{interface_id}/metadata/{key}', methods=['DELETE']) |
|
508
|
1 |
|
def delete_interface_metadata(self, request: Request) -> JSONResponse: |
|
509
|
|
|
"""Delete metadata from an interface.""" |
|
510
|
1 |
|
interface_id = request.path_params["interface_id"] |
|
511
|
1 |
|
key = request.path_params["key"] |
|
512
|
1 |
|
switch_id = ":".join(interface_id.split(":")[:-1]) |
|
513
|
1 |
|
try: |
|
514
|
1 |
|
interface_number = int(interface_id.split(":")[-1]) |
|
515
|
|
|
except ValueError: |
|
516
|
|
|
detail = f"Invalid interface_id {interface_id}" |
|
517
|
|
|
raise HTTPException(400, detail=detail) |
|
518
|
|
|
|
|
519
|
1 |
|
try: |
|
520
|
1 |
|
switch = self.controller.switches[switch_id] |
|
521
|
1 |
|
except KeyError: |
|
522
|
1 |
|
raise HTTPException(404, detail="Switch not found") |
|
523
|
|
|
|
|
524
|
1 |
|
try: |
|
525
|
1 |
|
interface = switch.interfaces[interface_number] |
|
526
|
1 |
|
except KeyError: |
|
527
|
1 |
|
raise HTTPException(404, detail="Interface not found") |
|
528
|
|
|
|
|
529
|
1 |
|
try: |
|
530
|
1 |
|
_ = interface.metadata[key] |
|
531
|
1 |
|
except KeyError: |
|
532
|
1 |
|
raise HTTPException(404, detail="Metadata not found") |
|
533
|
|
|
|
|
534
|
1 |
|
self.topo_controller.delete_interface_metadata_key(interface.id, key) |
|
535
|
1 |
|
interface.remove_metadata(key) |
|
536
|
1 |
|
self.notify_metadata_changes(interface, 'removed') |
|
537
|
1 |
|
return JSONResponse("Operation successful") |
|
538
|
|
|
|
|
539
|
1 |
|
@rest('v3/interfaces/{interface_id}/tag_ranges', methods=['POST']) |
|
540
|
1 |
|
@validate_openapi(spec) |
|
541
|
1 |
|
def set_tag_range(self, request: Request) -> JSONResponse: |
|
542
|
|
|
"""Set tag range""" |
|
543
|
1 |
|
content_type_json_or_415(request) |
|
544
|
1 |
|
content = get_json_or_400(request, self.controller.loop) |
|
545
|
1 |
|
tag_type = content.get("tag_type") |
|
546
|
1 |
|
try: |
|
547
|
1 |
|
ranges = get_tag_ranges(content["tag_ranges"]) |
|
548
|
|
|
except KytosInvalidTagRanges as err: |
|
549
|
|
|
raise HTTPException(400, detail=str(err)) |
|
550
|
1 |
|
interface_id = request.path_params["interface_id"] |
|
551
|
1 |
|
interface = self.controller.get_interface_by_id(interface_id) |
|
552
|
1 |
|
if not interface: |
|
553
|
1 |
|
raise HTTPException(404, detail="Interface not found") |
|
554
|
1 |
|
try: |
|
555
|
1 |
|
interface.set_tag_ranges(ranges, tag_type) |
|
556
|
1 |
|
self.handle_on_interface_tags(interface) |
|
557
|
1 |
|
except KytosTagError as err: |
|
558
|
1 |
|
raise HTTPException(400, detail=str(err)) |
|
559
|
1 |
|
return JSONResponse("Operation Successful", status_code=200) |
|
560
|
|
|
|
|
561
|
1 |
|
@rest('v3/interfaces/{interface_id}/tag_ranges', methods=['DELETE']) |
|
562
|
1 |
|
@validate_openapi(spec) |
|
563
|
1 |
|
def delete_tag_range(self, request: Request) -> JSONResponse: |
|
564
|
|
|
"""Set tag_range from tag_type to default value [1, 4095]""" |
|
565
|
1 |
|
interface_id = request.path_params["interface_id"] |
|
566
|
1 |
|
params = request.query_params |
|
567
|
1 |
|
tag_type = params.get("tag_type", 'vlan') |
|
568
|
1 |
|
interface = self.controller.get_interface_by_id(interface_id) |
|
569
|
1 |
|
if not interface: |
|
570
|
1 |
|
raise HTTPException(404, detail="Interface not found") |
|
571
|
1 |
|
try: |
|
572
|
1 |
|
interface.remove_tag_ranges(tag_type) |
|
573
|
1 |
|
self.handle_on_interface_tags(interface) |
|
574
|
1 |
|
except KytosTagError as err: |
|
575
|
1 |
|
raise HTTPException(400, detail=str(err)) |
|
576
|
1 |
|
return JSONResponse("Operation Successful", status_code=200) |
|
577
|
|
|
|
|
578
|
1 |
|
@rest('v3/interfaces/{interface_id}/special_tags', methods=['POST']) |
|
579
|
1 |
|
@validate_openapi(spec) |
|
580
|
1 |
|
def set_special_tags(self, request: Request) -> JSONResponse: |
|
581
|
|
|
"""Set special_tags""" |
|
582
|
1 |
|
content_type_json_or_415(request) |
|
583
|
1 |
|
content = get_json_or_400(request, self.controller.loop) |
|
584
|
1 |
|
tag_type = content.get("tag_type") |
|
585
|
1 |
|
special_tags = content["special_tags"] |
|
586
|
1 |
|
interface_id = request.path_params["interface_id"] |
|
587
|
1 |
|
interface = self.controller.get_interface_by_id(interface_id) |
|
588
|
1 |
|
if not interface: |
|
589
|
1 |
|
raise HTTPException(404, detail="Interface not found") |
|
590
|
1 |
|
try: |
|
591
|
1 |
|
interface.set_special_tags(tag_type, special_tags) |
|
592
|
1 |
|
self.handle_on_interface_tags(interface) |
|
593
|
1 |
|
except KytosTagError as err: |
|
594
|
1 |
|
raise HTTPException(400, detail=str(err)) |
|
595
|
1 |
|
return JSONResponse("Operation Successful", status_code=200) |
|
596
|
|
|
|
|
597
|
1 |
|
@rest('v3/interfaces/tag_ranges', methods=['GET']) |
|
598
|
1 |
|
@validate_openapi(spec) |
|
599
|
1 |
|
def get_all_tag_ranges(self, _: Request) -> JSONResponse: |
|
600
|
|
|
"""Get all tag_ranges, available_tags, special_tags |
|
601
|
|
|
and special_available_tags from interfaces""" |
|
602
|
1 |
|
result = {} |
|
603
|
1 |
|
for switch in self.controller.switches.copy().values(): |
|
604
|
1 |
|
for interface in switch.interfaces.copy().values(): |
|
605
|
1 |
|
result[interface.id] = { |
|
606
|
|
|
"available_tags": interface.available_tags, |
|
607
|
|
|
"tag_ranges": interface.tag_ranges, |
|
608
|
|
|
"special_tags": interface.special_tags, |
|
609
|
|
|
"special_available_tags": interface.special_available_tags |
|
610
|
|
|
} |
|
611
|
1 |
|
return JSONResponse(result, status_code=200) |
|
612
|
|
|
|
|
613
|
1 |
|
@rest('v3/interfaces/{interface_id}/tag_ranges', methods=['GET']) |
|
614
|
1 |
|
@validate_openapi(spec) |
|
615
|
1 |
|
def get_tag_ranges_by_intf(self, request: Request) -> JSONResponse: |
|
616
|
|
|
"""Get tag_ranges, available_tags, special_tags |
|
617
|
|
|
and special_available_tags from an interface""" |
|
618
|
1 |
|
interface_id = request.path_params["interface_id"] |
|
619
|
1 |
|
interface = self.controller.get_interface_by_id(interface_id) |
|
620
|
1 |
|
if not interface: |
|
621
|
1 |
|
raise HTTPException(404, detail="Interface not found") |
|
622
|
1 |
|
result = { |
|
623
|
|
|
interface_id: { |
|
624
|
|
|
"available_tags": interface.available_tags, |
|
625
|
|
|
"tag_ranges": interface.tag_ranges, |
|
626
|
|
|
"special_tags": interface.special_tags, |
|
627
|
|
|
"special_available_tags": interface.special_available_tags |
|
628
|
|
|
} |
|
629
|
|
|
} |
|
630
|
1 |
|
return JSONResponse(result, status_code=200) |
|
631
|
|
|
|
|
632
|
|
|
# Link related methods |
|
633
|
1 |
|
@rest('v3/links') |
|
634
|
1 |
|
def get_links(self, _request: Request) -> JSONResponse: |
|
635
|
|
|
"""Return a json with all the links in the topology. |
|
636
|
|
|
|
|
637
|
|
|
Links are connections between interfaces. |
|
638
|
|
|
""" |
|
639
|
|
|
return JSONResponse(self._get_links_dict()) |
|
640
|
|
|
|
|
641
|
1 |
|
@rest('v3/links/{link_id}/enable', methods=['POST']) |
|
642
|
1 |
|
def enable_link(self, request: Request) -> JSONResponse: |
|
643
|
|
|
"""Administratively enable a link in the topology.""" |
|
644
|
1 |
|
link_id = request.path_params["link_id"] |
|
645
|
1 |
|
link = self.controller.get_link(link_id) |
|
646
|
1 |
|
if not link: |
|
647
|
1 |
|
raise HTTPException(404, detail="Link not found") |
|
648
|
|
|
|
|
649
|
1 |
|
with link.link_lock: |
|
650
|
1 |
|
if not link.endpoint_a.is_enabled(): |
|
651
|
1 |
|
detail = f"{link.endpoint_a.id} needs enabling." |
|
652
|
1 |
|
raise HTTPException(409, detail=detail) |
|
653
|
1 |
|
if not link.endpoint_b.is_enabled(): |
|
654
|
1 |
|
detail = f"{link.endpoint_b.id} needs enabling." |
|
655
|
1 |
|
raise HTTPException(409, detail=detail) |
|
656
|
1 |
|
if not link.is_enabled(): |
|
657
|
1 |
|
self.topo_controller.enable_link(link.id) |
|
658
|
1 |
|
link.enable() |
|
659
|
1 |
|
self.notify_link_enabled_state(link, "enabled") |
|
660
|
1 |
|
self.notify_link_status_change(link, reason='link enabled') |
|
661
|
1 |
|
self.notify_topology_update() |
|
662
|
1 |
|
return JSONResponse("Operation successful", status_code=201) |
|
663
|
|
|
|
|
664
|
1 |
|
@rest('v3/links/{link_id}/disable', methods=['POST']) |
|
665
|
1 |
|
def disable_link(self, request: Request) -> JSONResponse: |
|
666
|
|
|
"""Administratively disable a link in the topology.""" |
|
667
|
1 |
|
link_id = request.path_params["link_id"] |
|
668
|
1 |
|
link = self.controller.get_link(link_id) |
|
669
|
1 |
|
if not link: |
|
670
|
1 |
|
raise HTTPException(404, detail="Link not found") |
|
671
|
|
|
|
|
672
|
1 |
|
with link.link_lock: |
|
673
|
1 |
|
if link.is_enabled(): |
|
674
|
1 |
|
self.topo_controller.disable_link(link.id) |
|
675
|
1 |
|
link.disable() |
|
676
|
1 |
|
self.notify_link_enabled_state(link, "disabled") |
|
677
|
1 |
|
self.notify_link_status_change(link, reason='link disabled') |
|
678
|
1 |
|
self.notify_topology_update() |
|
679
|
1 |
|
return JSONResponse("Operation successful", status_code=201) |
|
680
|
|
|
|
|
681
|
1 |
|
def notify_link_enabled_state(self, link: Link, action: str): |
|
682
|
|
|
"""Send a KytosEvent whether a link status (enabled/disabled) |
|
683
|
|
|
has changed its status.""" |
|
684
|
1 |
|
name = f'kytos/topology.link.{action}' |
|
685
|
1 |
|
content = {'link': link} |
|
686
|
1 |
|
event = KytosEvent(name=name, content=content) |
|
687
|
1 |
|
self.controller.buffers.app.put(event) |
|
688
|
|
|
|
|
689
|
1 |
|
@rest('v3/links/{link_id}/metadata') |
|
690
|
1 |
|
def get_link_metadata(self, request: Request) -> JSONResponse: |
|
691
|
|
|
"""Get metadata from a link.""" |
|
692
|
1 |
|
link_id = request.path_params["link_id"] |
|
693
|
1 |
|
link = self.controller.get_link(link_id) |
|
694
|
1 |
|
try: |
|
695
|
1 |
|
return JSONResponse({"metadata": link.metadata}) |
|
696
|
1 |
|
except AttributeError: |
|
697
|
1 |
|
raise HTTPException(404, detail="Link not found") |
|
698
|
|
|
|
|
699
|
1 |
|
@rest('v3/links/{link_id}/metadata', methods=['POST']) |
|
700
|
1 |
|
def add_link_metadata(self, request: Request) -> JSONResponse: |
|
701
|
|
|
"""Add metadata to a link.""" |
|
702
|
1 |
|
link_id = request.path_params["link_id"] |
|
703
|
1 |
|
metadata = self._get_metadata(request) |
|
704
|
1 |
|
link = self.controller.get_link(link_id) |
|
705
|
1 |
|
if not link: |
|
706
|
1 |
|
raise HTTPException(404, detail="Link not found") |
|
707
|
|
|
|
|
708
|
1 |
|
with link.link_lock: |
|
709
|
1 |
|
self.topo_controller.add_link_metadata(link_id, metadata) |
|
710
|
1 |
|
link.extend_metadata(metadata) |
|
711
|
1 |
|
self.notify_metadata_changes(link, 'added') |
|
712
|
1 |
|
self.notify_topology_update() |
|
713
|
1 |
|
return JSONResponse("Operation successful", status_code=201) |
|
714
|
|
|
|
|
715
|
1 |
|
@rest('v3/links/{link_id}/metadata/{key}', methods=['DELETE']) |
|
716
|
1 |
|
def delete_link_metadata(self, request: Request) -> JSONResponse: |
|
717
|
|
|
"""Delete metadata from a link.""" |
|
718
|
1 |
|
link_id = request.path_params["link_id"] |
|
719
|
1 |
|
key = request.path_params["key"] |
|
720
|
1 |
|
link = self.controller.get_link(link_id) |
|
721
|
1 |
|
if not link: |
|
722
|
1 |
|
raise HTTPException(404, detail="Link not found") |
|
723
|
|
|
|
|
724
|
1 |
|
with link.link_lock: |
|
725
|
1 |
|
try: |
|
726
|
1 |
|
_ = link.metadata[key] |
|
727
|
1 |
|
except KeyError: |
|
728
|
1 |
|
raise HTTPException(404, detail="Metadata not found") |
|
729
|
1 |
|
self.topo_controller.delete_link_metadata_key(link.id, key) |
|
730
|
1 |
|
link.remove_metadata(key) |
|
731
|
1 |
|
self.notify_metadata_changes(link, 'removed') |
|
732
|
1 |
|
self.notify_topology_update() |
|
733
|
1 |
|
return JSONResponse("Operation successful") |
|
734
|
|
|
|
|
735
|
1 |
|
@rest('v3/links/{link_id}', methods=['DELETE']) |
|
736
|
1 |
|
def delete_link(self, request: Request) -> JSONResponse: |
|
737
|
|
|
"""Delete a disabled link from topology. |
|
738
|
|
|
It won't work for link with other statuses. |
|
739
|
|
|
""" |
|
740
|
1 |
|
link_id = request.path_params["link_id"] |
|
741
|
1 |
|
link = self.controller.get_link(link_id) |
|
742
|
1 |
|
if not link: |
|
743
|
1 |
|
raise HTTPException(404, detail="Link not found.") |
|
744
|
1 |
|
with self.controller.links_lock: |
|
745
|
1 |
|
with link.link_lock: |
|
746
|
1 |
|
if link.status != EntityStatus.DISABLED: |
|
747
|
1 |
|
raise HTTPException(409, detail="Link is not disabled.") |
|
748
|
|
|
|
|
749
|
1 |
|
if link.endpoint_a.link and link == link.endpoint_a.link: |
|
750
|
1 |
|
switch = link.endpoint_a.switch |
|
751
|
1 |
|
link.endpoint_a.link = None |
|
752
|
1 |
|
link.endpoint_a.nni = False |
|
753
|
1 |
|
self.topo_controller.upsert_switch( |
|
754
|
|
|
switch.id, switch.as_dict() |
|
755
|
|
|
) |
|
756
|
1 |
|
if link.endpoint_b.link and link == link.endpoint_b.link: |
|
757
|
1 |
|
switch = link.endpoint_b.switch |
|
758
|
1 |
|
link.endpoint_b.link = None |
|
759
|
1 |
|
link.endpoint_b.nni = False |
|
760
|
1 |
|
self.topo_controller.upsert_switch( |
|
761
|
|
|
switch.id, switch.as_dict() |
|
762
|
|
|
) |
|
763
|
1 |
|
self.topo_controller.delete_link(link_id) |
|
764
|
1 |
|
link = self.controller.links.pop(link_id) |
|
765
|
1 |
|
self.notify_topology_update() |
|
766
|
1 |
|
name = 'kytos/topology.link.deleted' |
|
767
|
1 |
|
event = KytosEvent(name=name, content={'link': link}) |
|
768
|
1 |
|
self.controller.buffers.app.put(event) |
|
769
|
1 |
|
return JSONResponse("Operation successful") |
|
770
|
|
|
|
|
771
|
1 |
|
@rest('v3/interfaces/{intf_id}', methods=['DELETE']) |
|
772
|
1 |
|
def delete_interface(self, request: Request) -> JSONResponse: |
|
773
|
|
|
"""Delete an interface only if it is not used.""" |
|
774
|
1 |
|
intf_id = request.path_params.get("intf_id") |
|
775
|
1 |
|
intf_split = intf_id.split(":") |
|
776
|
1 |
|
switch_id = ":".join(intf_split[:-1]) |
|
777
|
1 |
|
try: |
|
778
|
1 |
|
intf_port = int(intf_split[-1]) |
|
779
|
1 |
|
except ValueError: |
|
780
|
1 |
|
raise HTTPException(400, detail="Invalid interface id.") |
|
781
|
1 |
|
try: |
|
782
|
1 |
|
switch = self.controller.switches[switch_id] |
|
783
|
1 |
|
except KeyError: |
|
784
|
1 |
|
raise HTTPException(404, detail="Switch not found.") |
|
785
|
1 |
|
try: |
|
786
|
1 |
|
interface = switch.interfaces[intf_port] |
|
787
|
1 |
|
except KeyError: |
|
788
|
1 |
|
raise HTTPException(404, detail="Interface not found.") |
|
789
|
|
|
|
|
790
|
1 |
|
usage = self.get_intf_usage(interface) |
|
791
|
1 |
|
if usage: |
|
792
|
1 |
|
raise HTTPException(409, detail=f"Interface could not be " |
|
793
|
|
|
f"deleted. Reason: {usage}") |
|
794
|
1 |
|
self._delete_interface(interface) |
|
795
|
1 |
|
return JSONResponse("Operation Successful", status_code=200) |
|
796
|
|
|
|
|
797
|
1 |
|
@listen_to( |
|
798
|
|
|
"kytos/.*.liveness.(up|down|disabled)", |
|
799
|
|
|
pool="dynamic_single" |
|
800
|
|
|
) |
|
801
|
1 |
|
def on_link_liveness(self, event) -> None: |
|
802
|
|
|
"""Handle link liveness up|down|disabled event.""" |
|
803
|
|
|
liveness_status = event.name.split(".")[-1] |
|
804
|
|
|
if liveness_status == "disabled": |
|
805
|
|
|
interfaces = event.content["interfaces"] |
|
806
|
|
|
self.handle_link_liveness_disabled(interfaces) |
|
807
|
|
|
elif liveness_status in ("up", "down"): |
|
808
|
|
|
intf_a: Interface = event.content["interface_a"] |
|
809
|
|
|
intf_b: Interface = event.content["interface_b"] |
|
810
|
|
|
if intf_a.link != intf_b.link: |
|
811
|
|
|
log.error("Link from interfaces " |
|
812
|
|
|
f"{intf_a}, {intf_b}" |
|
813
|
|
|
"not found.") |
|
814
|
|
|
return |
|
815
|
|
|
self.handle_link_liveness_status(intf_a.link, liveness_status) |
|
816
|
|
|
|
|
817
|
1 |
|
def handle_link_liveness_status( |
|
818
|
|
|
self, |
|
819
|
|
|
link: Link, |
|
820
|
|
|
liveness_status: str |
|
821
|
|
|
) -> None: |
|
822
|
|
|
"""Handle link liveness.""" |
|
823
|
1 |
|
with link.link_lock: |
|
824
|
1 |
|
metadata = {"liveness_status": liveness_status} |
|
825
|
1 |
|
log.info(f"Link liveness {liveness_status}: {link}") |
|
826
|
1 |
|
link.extend_metadata(metadata) |
|
827
|
1 |
|
self.notify_topology_update() |
|
828
|
1 |
|
if link.status == EntityStatus.UP and liveness_status == "up": |
|
829
|
1 |
|
self.notify_link_status_change(link, reason="liveness_up") |
|
830
|
1 |
|
if link.status == EntityStatus.DOWN and liveness_status == "down": |
|
831
|
1 |
|
self.notify_link_status_change(link, reason="liveness_down") |
|
832
|
|
|
|
|
833
|
1 |
|
def handle_link_liveness_disabled(self, interfaces) -> None: |
|
834
|
|
|
"""Handle link liveness disabled.""" |
|
835
|
1 |
|
log.info(f"Link liveness disabled interfaces: {interfaces}") |
|
836
|
|
|
|
|
837
|
1 |
|
key = "liveness_status" |
|
838
|
1 |
|
links = self.controller.get_links_from_interfaces(interfaces) |
|
839
|
1 |
|
with ExitStack() as stack: |
|
840
|
1 |
|
for link in links.values(): |
|
841
|
1 |
|
stack.enter_context(link.link_lock) |
|
842
|
1 |
|
link.remove_metadata(key) |
|
843
|
1 |
|
self.notify_topology_update() |
|
844
|
1 |
|
for link in links.values(): |
|
845
|
1 |
|
self.notify_link_status_change( |
|
846
|
|
|
link, reason="liveness_disabled" |
|
847
|
|
|
) |
|
848
|
|
|
|
|
849
|
1 |
|
@listen_to("kytos/core.interface_tags") |
|
850
|
1 |
|
def on_interface_tags(self, event): |
|
851
|
|
|
"""Handle on_interface_tags.""" |
|
852
|
|
|
interface = event.content['interface'] |
|
853
|
|
|
with self._intfs_lock[interface.id]: |
|
854
|
|
|
if ( |
|
855
|
|
|
interface.id in self._intfs_tags_updated_at |
|
856
|
|
|
and self._intfs_tags_updated_at[interface.id] > event.timestamp |
|
857
|
|
|
): |
|
858
|
|
|
return |
|
859
|
|
|
self._intfs_tags_updated_at[interface.id] = event.timestamp |
|
860
|
|
|
self.handle_on_interface_tags(interface) |
|
861
|
|
|
|
|
862
|
1 |
|
def handle_on_interface_tags(self, interface): |
|
863
|
|
|
"""Update interface details""" |
|
864
|
1 |
|
intf_id = interface.id |
|
865
|
1 |
|
self.topo_controller.upsert_interface_details( |
|
866
|
|
|
intf_id, interface.available_tags, interface.tag_ranges, |
|
867
|
|
|
interface.special_available_tags, |
|
868
|
|
|
interface.special_tags |
|
869
|
|
|
) |
|
870
|
|
|
|
|
871
|
1 |
|
@listen_to('.*.switch.(new|reconnected)') |
|
872
|
1 |
|
def on_new_switch(self, event): |
|
873
|
|
|
"""Create a new Device on the Topology. |
|
874
|
|
|
|
|
875
|
|
|
Handle the event of a new created switch and update the topology with |
|
876
|
|
|
this new device. Also notify if the switch is enabled. |
|
877
|
|
|
""" |
|
878
|
|
|
self.handle_new_switch(event) |
|
879
|
|
|
|
|
880
|
1 |
|
def handle_new_switch(self, event): |
|
881
|
|
|
"""Create a new Device on the Topology.""" |
|
882
|
1 |
|
switch = event.content['switch'] |
|
883
|
1 |
|
switch.activate() |
|
884
|
1 |
|
self.topo_controller.upsert_switch(switch.id, switch.as_dict()) |
|
885
|
1 |
|
log.debug('Switch %s added to the Topology.', switch.id) |
|
886
|
1 |
|
self.notify_topology_update() |
|
887
|
1 |
|
if switch.is_enabled(): |
|
888
|
1 |
|
self.notify_switch_enabled(switch.id) |
|
889
|
|
|
|
|
890
|
1 |
|
@listen_to('.*.connection.lost') |
|
891
|
1 |
|
def on_connection_lost(self, event): |
|
892
|
|
|
"""Remove a Device from the topology. |
|
893
|
|
|
|
|
894
|
|
|
Remove the disconnected Device and every link that has one of its |
|
895
|
|
|
interfaces. |
|
896
|
|
|
""" |
|
897
|
|
|
self.handle_connection_lost(event) |
|
898
|
|
|
|
|
899
|
1 |
|
def handle_connection_lost(self, event): |
|
900
|
|
|
"""Remove a Device from the topology.""" |
|
901
|
1 |
|
switch = event.content['source'].switch |
|
902
|
1 |
|
if switch: |
|
903
|
1 |
|
switch.deactivate() |
|
904
|
1 |
|
log.debug('Switch %s removed from the Topology.', switch.id) |
|
905
|
1 |
|
self.notify_topology_update() |
|
906
|
|
|
|
|
907
|
1 |
|
def handle_interfaces_created(self, event): |
|
908
|
|
|
"""Update the topology based on the interfaces created.""" |
|
909
|
1 |
|
interfaces = event.content["interfaces"] |
|
910
|
1 |
|
if not interfaces: |
|
911
|
|
|
return |
|
912
|
1 |
|
switch = interfaces[0].switch |
|
913
|
1 |
|
self.topo_controller.upsert_switch(switch.id, switch.as_dict()) |
|
914
|
1 |
|
name = "kytos/topology.switch.interface.created" |
|
915
|
1 |
|
for interface in interfaces: |
|
916
|
1 |
|
event = KytosEvent(name=name, content={'interface': interface}) |
|
917
|
1 |
|
self.controller.buffers.app.put(event) |
|
918
|
|
|
|
|
919
|
1 |
|
def handle_interface_created(self, event): |
|
920
|
|
|
"""Update the topology based on an interface created event. |
|
921
|
|
|
|
|
922
|
|
|
It's handled as a link_up in case a switch send a |
|
923
|
|
|
created event again and it can be belong to a link. |
|
924
|
|
|
""" |
|
925
|
1 |
|
interface = event.content['interface'] |
|
926
|
1 |
|
if not interface.is_active(): |
|
927
|
1 |
|
self.handle_interface_link_down(interface, event) |
|
928
|
|
|
else: |
|
929
|
1 |
|
self.handle_interface_link_up(interface, event) |
|
930
|
|
|
|
|
931
|
1 |
|
@listen_to('.*.topology.switch.interface.created') |
|
932
|
1 |
|
def on_interface_created(self, event): |
|
933
|
|
|
"""Handle individual interface create event. |
|
934
|
|
|
|
|
935
|
|
|
It's handled as a link_up in case a switch send a |
|
936
|
|
|
created event it can belong to an existign link. |
|
937
|
|
|
""" |
|
938
|
|
|
self.handle_interface_created(event) |
|
939
|
|
|
|
|
940
|
1 |
|
@listen_to('.*.switch.interfaces.created') |
|
941
|
1 |
|
def on_interfaces_created(self, event): |
|
942
|
|
|
"""Update the topology based on a list of created interfaces.""" |
|
943
|
|
|
self.handle_interfaces_created(event) |
|
944
|
|
|
|
|
945
|
1 |
|
def handle_interface_down(self, event): |
|
946
|
|
|
"""Update the topology based on a Port Modify event. |
|
947
|
|
|
|
|
948
|
|
|
The event notifies that an interface was changed to 'down'. |
|
949
|
|
|
""" |
|
950
|
1 |
|
interface = event.content['interface'] |
|
951
|
1 |
|
with self._intfs_lock[interface.id]: |
|
952
|
1 |
|
if ( |
|
953
|
|
|
interface.id in self._intfs_updated_at |
|
954
|
|
|
and self._intfs_updated_at[interface.id] > event.timestamp |
|
955
|
|
|
): |
|
956
|
|
|
return |
|
957
|
1 |
|
self._intfs_updated_at[interface.id] = event.timestamp |
|
958
|
1 |
|
interface.deactivate() |
|
959
|
1 |
|
self.handle_interface_link_down(interface, event) |
|
960
|
|
|
|
|
961
|
1 |
|
@listen_to('.*.switch.interface.deleted') |
|
962
|
1 |
|
def on_interface_deleted(self, event): |
|
963
|
|
|
"""Update the topology based on a Port Delete event.""" |
|
964
|
|
|
self.handle_interface_deleted(event) |
|
965
|
|
|
|
|
966
|
1 |
|
def handle_interface_deleted(self, event): |
|
967
|
|
|
"""Update the topology based on a Port Delete event.""" |
|
968
|
1 |
|
self.handle_interface_down(event) |
|
969
|
1 |
|
interface = event.content['interface'] |
|
970
|
1 |
|
usage = self.get_intf_usage(interface) |
|
971
|
1 |
|
if usage: |
|
972
|
1 |
|
log.info(f"Interface {interface.id} could not be safely removed." |
|
973
|
|
|
f" Reason: {usage}") |
|
974
|
|
|
else: |
|
975
|
1 |
|
self._delete_interface(interface) |
|
976
|
|
|
|
|
977
|
1 |
|
def get_intf_usage(self, interface: Interface) -> Optional[str]: |
|
978
|
|
|
"""Determines how an interface is used explained in a string, |
|
979
|
|
|
returns None if unused.""" |
|
980
|
1 |
|
if interface.is_enabled() or interface.is_active(): |
|
981
|
1 |
|
return "It is enabled or active." |
|
982
|
|
|
|
|
983
|
1 |
|
link = interface.link |
|
984
|
1 |
|
if link: |
|
985
|
1 |
|
return f"It has a link, {link.id}." |
|
986
|
|
|
|
|
987
|
1 |
|
flow_id = self.get_flow_id_by_intf(interface) |
|
988
|
1 |
|
if flow_id: |
|
989
|
1 |
|
return f"There is a flow installed, {flow_id}." |
|
990
|
|
|
|
|
991
|
1 |
|
return None |
|
992
|
|
|
|
|
993
|
1 |
|
def get_flow_id_by_intf(self, interface: Interface) -> str: |
|
994
|
|
|
"""Return flow_id from first found flow used by interface.""" |
|
995
|
1 |
|
flows = self.get_flows_by_switch(interface.switch.id) |
|
996
|
1 |
|
port_n = int(interface.id.split(":")[-1]) |
|
997
|
1 |
|
for flow in flows: |
|
998
|
1 |
|
in_port = flow["flow"].get("match", {}).get("in_port") |
|
999
|
1 |
|
if in_port == port_n: |
|
1000
|
1 |
|
return flow["flow_id"] |
|
1001
|
|
|
|
|
1002
|
1 |
|
instructions = flow["flow"].get("instructions", []) |
|
1003
|
1 |
|
for instruction in instructions: |
|
1004
|
1 |
|
if instruction["instruction_type"] == "apply_actions": |
|
1005
|
1 |
|
actions = instruction["actions"] |
|
1006
|
1 |
|
for action in actions: |
|
1007
|
1 |
|
if (action["action_type"] == "output" |
|
1008
|
|
|
and action.get("port") == port_n): |
|
1009
|
1 |
|
return flow["flow_id"] |
|
1010
|
|
|
|
|
1011
|
1 |
|
actions = flow["flow"].get("actions", []) |
|
1012
|
1 |
|
for action in actions: |
|
1013
|
1 |
|
if (action["action_type"] == "output" |
|
1014
|
|
|
and action.get("port") == port_n): |
|
1015
|
1 |
|
return flow["flow_id"] |
|
1016
|
1 |
|
return None |
|
1017
|
|
|
|
|
1018
|
1 |
|
def _delete_interface(self, interface: Interface): |
|
1019
|
|
|
"""Delete any trace of an interface. Only use this method when |
|
1020
|
|
|
it was confirmed that the interface is not used.""" |
|
1021
|
1 |
|
switch: Switch = interface.switch |
|
1022
|
1 |
|
switch.remove_interface(interface) |
|
1023
|
1 |
|
self.topo_controller.upsert_switch(switch.id, switch.as_dict()) |
|
1024
|
1 |
|
self.topo_controller.delete_interface_from_details(interface.id) |
|
1025
|
|
|
|
|
1026
|
1 |
|
@listen_to('.*.switch.interface.link_up') |
|
1027
|
1 |
|
def on_interface_link_up(self, event): |
|
1028
|
|
|
"""Update the topology based on a Port Modify event. |
|
1029
|
|
|
|
|
1030
|
|
|
The event notifies that an interface's link was changed to 'up'. |
|
1031
|
|
|
""" |
|
1032
|
|
|
interface = event.content['interface'] |
|
1033
|
|
|
self.handle_interface_link_up(interface, event) |
|
1034
|
|
|
|
|
1035
|
1 |
|
def handle_interface_link_up(self, interface, event): |
|
1036
|
|
|
"""Update the topology based on a Port Modify event.""" |
|
1037
|
1 |
|
with self._intfs_lock[interface.id]: |
|
1038
|
1 |
|
if ( |
|
1039
|
|
|
interface.id in self._intfs_updated_at |
|
1040
|
|
|
and self._intfs_updated_at[interface.id] > event.timestamp |
|
1041
|
|
|
): |
|
1042
|
1 |
|
return |
|
1043
|
1 |
|
self._intfs_updated_at[interface.id] = event.timestamp |
|
1044
|
1 |
|
self.handle_link_up(interface) |
|
1045
|
|
|
|
|
1046
|
1 |
|
@tenacity.retry( |
|
1047
|
|
|
stop=stop_after_attempt(3), |
|
1048
|
|
|
wait=wait_combine(wait_fixed(3), wait_random(min=2, max=7)), |
|
1049
|
|
|
before_sleep=before_sleep, |
|
1050
|
|
|
retry=retry_if_exception_type(httpx.RequestError), |
|
1051
|
|
|
) |
|
1052
|
1 |
|
def get_flows_by_switch(self, dpid: str) -> list: |
|
1053
|
|
|
"""Get installed flows by switch from flow_manager.""" |
|
1054
|
1 |
|
endpoint = settings.FLOW_MANAGER_URL +\ |
|
1055
|
|
|
f'/stored_flows?state=installed&dpid={dpid}' |
|
1056
|
1 |
|
res = httpx.get(endpoint) |
|
1057
|
1 |
|
if res.is_server_error or res.status_code in (404, 400): |
|
1058
|
1 |
|
raise httpx.RequestError(res.text) |
|
1059
|
1 |
|
return res.json().get(dpid, []) |
|
1060
|
|
|
|
|
1061
|
1 |
|
def link_status_hook_link_up_timer( |
|
1062
|
|
|
self, |
|
1063
|
|
|
link: Link |
|
1064
|
|
|
) -> Optional[EntityStatus]: |
|
1065
|
|
|
"""Link status hook link up timer.""" |
|
1066
|
1 |
|
tnow = time.time() |
|
1067
|
1 |
|
if link.id not in self.link_status_change: |
|
1068
|
|
|
return None |
|
1069
|
1 |
|
link_status_info = self.link_status_change[link.id] |
|
1070
|
1 |
|
tdelta = tnow - link_status_info['last_status_change'] |
|
1071
|
1 |
|
if tdelta < self.link_up_timer: |
|
1072
|
1 |
|
return EntityStatus.DOWN |
|
1073
|
1 |
|
return None |
|
1074
|
|
|
|
|
1075
|
1 |
|
def notify_link_up_if_status(self, link: Link, reason="link up") -> None: |
|
1076
|
|
|
"""Tries to notify link up and topology changes based on its status |
|
1077
|
|
|
|
|
1078
|
|
|
Currently, it needs to wait up to a timer.""" |
|
1079
|
1 |
|
time.sleep(self.link_up_timer) |
|
1080
|
1 |
|
if link.status != EntityStatus.UP: |
|
1081
|
|
|
return |
|
1082
|
1 |
|
with link.link_lock: |
|
1083
|
1 |
|
status_change_info = self.link_status_change[link.id] |
|
1084
|
1 |
|
notified_at = status_change_info.get("notified_up_at") |
|
1085
|
1 |
|
if ( |
|
1086
|
|
|
notified_at |
|
1087
|
|
|
and (now() - notified_at.replace(tzinfo=timezone.utc)).seconds |
|
1088
|
|
|
< self.link_up_timer |
|
1089
|
|
|
): |
|
1090
|
1 |
|
return |
|
1091
|
1 |
|
status_change_info["notified_up_at"] = now() |
|
1092
|
1 |
|
self.notify_topology_update() |
|
1093
|
1 |
|
self.notify_link_status_change(link, reason) |
|
1094
|
|
|
|
|
1095
|
1 |
|
def handle_link_up(self, interface: Interface): |
|
1096
|
|
|
"""Handle link up for an interface.""" |
|
1097
|
1 |
|
link = interface.link |
|
1098
|
1 |
|
if not link: |
|
1099
|
|
|
self.notify_topology_update() |
|
1100
|
|
|
return |
|
1101
|
1 |
|
with link.link_lock: |
|
1102
|
1 |
|
other_interface = ( |
|
1103
|
|
|
link.endpoint_b if link.endpoint_a == interface |
|
1104
|
|
|
else link.endpoint_a |
|
1105
|
|
|
) |
|
1106
|
1 |
|
if ( |
|
1107
|
|
|
link.id not in self.link_status_change or |
|
1108
|
|
|
not link.is_active() |
|
1109
|
|
|
): |
|
1110
|
1 |
|
status_change_info = self.link_status_change[link.id] |
|
1111
|
1 |
|
status_change_info['last_status_change'] = time.time() |
|
1112
|
1 |
|
link.activate() |
|
1113
|
1 |
|
self.notify_topology_update() |
|
1114
|
1 |
|
link_dependencies: list[GenericEntity] = [ |
|
1115
|
|
|
other_interface.switch, |
|
1116
|
|
|
interface.switch, |
|
1117
|
|
|
other_interface, |
|
1118
|
|
|
interface, |
|
1119
|
|
|
] |
|
1120
|
1 |
|
for dependency in link_dependencies: |
|
1121
|
1 |
|
if not dependency.is_active(): |
|
1122
|
1 |
|
log.info( |
|
1123
|
|
|
f"{link} dependency {dependency} was not active yet." |
|
1124
|
|
|
) |
|
1125
|
1 |
|
return |
|
1126
|
1 |
|
event = KytosEvent( |
|
1127
|
|
|
name="kytos/topology.notify_link_up_if_status", |
|
1128
|
|
|
content={"reason": "link up", "link": link} |
|
1129
|
|
|
) |
|
1130
|
1 |
|
self.controller.buffers.app.put(event) |
|
1131
|
|
|
|
|
1132
|
1 |
|
@listen_to('.*.switch.interface.link_down') |
|
1133
|
1 |
|
def on_interface_link_down(self, event: KytosEvent): |
|
1134
|
|
|
"""Update the topology based on a Port Modify event. |
|
1135
|
|
|
|
|
1136
|
|
|
The event notifies that an interface's link was changed to 'down'. |
|
1137
|
|
|
""" |
|
1138
|
|
|
interface = event.content['interface'] |
|
1139
|
|
|
self.handle_interface_link_down(interface, event) |
|
1140
|
|
|
|
|
1141
|
1 |
|
def handle_interface_link_down( |
|
1142
|
|
|
self, |
|
1143
|
|
|
interface: Interface, |
|
1144
|
|
|
event: KytosEvent |
|
1145
|
|
|
): |
|
1146
|
|
|
"""Update the topology based on an interface.""" |
|
1147
|
1 |
|
with self._intfs_lock[interface.id]: |
|
1148
|
1 |
|
if ( |
|
1149
|
|
|
interface.id in self._intfs_updated_at |
|
1150
|
|
|
and self._intfs_updated_at[interface.id] > event.timestamp |
|
1151
|
|
|
): |
|
1152
|
1 |
|
return |
|
1153
|
1 |
|
self._intfs_updated_at[interface.id] = event.timestamp |
|
1154
|
1 |
|
self.handle_link_down(interface) |
|
1155
|
|
|
|
|
1156
|
1 |
|
def handle_link_down(self, interface): |
|
1157
|
|
|
"""Notify a link is down.""" |
|
1158
|
1 |
|
link = interface.link |
|
1159
|
1 |
|
if link: |
|
1160
|
1 |
|
with link.link_lock: |
|
1161
|
1 |
|
link.deactivate() |
|
1162
|
1 |
|
self.notify_link_status_change(link, reason="link down") |
|
1163
|
1 |
|
self.notify_topology_update() |
|
1164
|
|
|
|
|
1165
|
1 |
|
@listen_to('.*.interface.is.nni') |
|
1166
|
1 |
|
def on_add_links(self, event): |
|
1167
|
|
|
"""Update the topology with links related to the NNI interfaces.""" |
|
1168
|
|
|
self.add_links(event) |
|
1169
|
|
|
|
|
1170
|
1 |
|
def add_links(self, event): |
|
1171
|
|
|
"""Update the topology with links related to the NNI interfaces.""" |
|
1172
|
1 |
|
interface_a: Interface = event.content['interface_a'] |
|
1173
|
1 |
|
interface_b: Interface = event.content['interface_b'] |
|
1174
|
|
|
|
|
1175
|
1 |
|
try: |
|
1176
|
1 |
|
link, created = self.controller.get_link_or_create(interface_a, |
|
1177
|
|
|
interface_b) |
|
1178
|
|
|
|
|
1179
|
|
|
except KytosLinkCreationError as err: |
|
1180
|
|
|
log.error(f'Error creating link: {err}.') |
|
1181
|
|
|
return |
|
1182
|
|
|
|
|
1183
|
1 |
|
if not created: |
|
1184
|
|
|
return |
|
1185
|
1 |
|
self.notify_topology_update() |
|
1186
|
|
|
|
|
1187
|
1 |
|
with link.link_lock: |
|
1188
|
1 |
|
if link.is_active() and link.id not in self.link_status_change: |
|
1189
|
1 |
|
status_change_info = self.link_status_change[link.id] |
|
1190
|
1 |
|
status_change_info['last_status_change'] = time.time() |
|
1191
|
1 |
|
self.topo_controller.upsert_link(link.id, link.as_dict()) |
|
1192
|
1 |
|
self.notify_link_up_if_status(link, "link up") |
|
1193
|
|
|
|
|
1194
|
1 |
|
@listen_to('.*.of_lldp.network_status.updated') |
|
1195
|
1 |
|
def on_lldp_status_updated(self, event): |
|
1196
|
|
|
"""Handle of_lldp.network_status.updated from of_lldp.""" |
|
1197
|
|
|
self.handle_lldp_status_updated(event) |
|
1198
|
|
|
|
|
1199
|
1 |
|
@listen_to(".*.topo_controller.upsert_switch") |
|
1200
|
1 |
|
def on_topo_controller_upsert_switch(self, event) -> None: |
|
1201
|
|
|
"""Listen to topo_controller_upsert_switch.""" |
|
1202
|
|
|
self.handle_topo_controller_upsert_switch(event.content["switch"]) |
|
1203
|
|
|
|
|
1204
|
1 |
|
def handle_topo_controller_upsert_switch(self, switch) -> Optional[dict]: |
|
1205
|
|
|
"""Handle topo_controller_upsert_switch.""" |
|
1206
|
1 |
|
return self.topo_controller.upsert_switch(switch.id, switch.as_dict()) |
|
1207
|
|
|
|
|
1208
|
1 |
|
def handle_lldp_status_updated(self, event) -> None: |
|
1209
|
|
|
"""Handle .*.network_status.updated events from of_lldp.""" |
|
1210
|
1 |
|
content = event.content |
|
1211
|
1 |
|
interface_ids = content["interface_ids"] |
|
1212
|
1 |
|
switches = set() |
|
1213
|
1 |
|
for interface_id in interface_ids: |
|
1214
|
1 |
|
dpid = ":".join(interface_id.split(":")[:-1]) |
|
1215
|
1 |
|
switch = self.controller.get_switch_by_dpid(dpid) |
|
1216
|
1 |
|
if switch: |
|
1217
|
1 |
|
switches.add(switch) |
|
1218
|
|
|
|
|
1219
|
1 |
|
name = "kytos/topology.topo_controller.upsert_switch" |
|
1220
|
1 |
|
for switch in switches: |
|
1221
|
1 |
|
event = KytosEvent(name=name, content={"switch": switch}) |
|
1222
|
1 |
|
self.controller.buffers.app.put(event) |
|
1223
|
|
|
|
|
1224
|
1 |
|
def notify_switch_enabled(self, dpid): |
|
1225
|
|
|
"""Send an event to notify that a switch is enabled.""" |
|
1226
|
1 |
|
name = 'kytos/topology.switch.enabled' |
|
1227
|
1 |
|
event = KytosEvent(name=name, content={'dpid': dpid}) |
|
1228
|
1 |
|
self.controller.buffers.app.put(event) |
|
1229
|
|
|
|
|
1230
|
1 |
|
def notify_switch_links_status(self, switch, reason): |
|
1231
|
|
|
"""Send an event to notify the status of a link in a switch""" |
|
1232
|
1 |
|
for link in self.controller.links.copy().values(): |
|
1233
|
1 |
|
with link.link_lock: |
|
1234
|
1 |
|
if switch in (link.endpoint_a.switch, link.endpoint_b.switch): |
|
1235
|
1 |
|
if reason == "link enabled": |
|
1236
|
1 |
|
name = 'kytos/topology.notify_link_up_if_status' |
|
1237
|
1 |
|
content = {'reason': reason, "link": link} |
|
1238
|
1 |
|
event = KytosEvent(name=name, content=content) |
|
1239
|
1 |
|
self.controller.buffers.app.put(event) |
|
1240
|
|
|
else: |
|
1241
|
1 |
|
self.notify_link_status_change(link, reason) |
|
1242
|
|
|
|
|
1243
|
1 |
|
def notify_switch_disabled(self, dpid): |
|
1244
|
|
|
"""Send an event to notify that a switch is disabled.""" |
|
1245
|
1 |
|
name = 'kytos/topology.switch.disabled' |
|
1246
|
1 |
|
event = KytosEvent(name=name, content={'dpid': dpid}) |
|
1247
|
1 |
|
self.controller.buffers.app.put(event) |
|
1248
|
|
|
|
|
1249
|
1 |
|
def notify_topology_update(self): |
|
1250
|
|
|
"""Send an event to notify about updates on the topology.""" |
|
1251
|
1 |
|
name = 'kytos/topology.updated' |
|
1252
|
1 |
|
event = KytosEvent( |
|
1253
|
|
|
name=name, content={'topology': self._get_topology()} |
|
1254
|
|
|
) |
|
1255
|
1 |
|
self.controller.buffers.app.put(event) |
|
1256
|
|
|
|
|
1257
|
1 |
|
def _notify_interface_link_status( |
|
1258
|
|
|
self, |
|
1259
|
|
|
interfaces: Iterable[Interface], |
|
1260
|
|
|
reason |
|
1261
|
|
|
): |
|
1262
|
|
|
"""Send an event to notify the status of a link from interfaces.""" |
|
1263
|
1 |
|
for interface in interfaces: |
|
1264
|
1 |
|
if interface.link: |
|
1265
|
1 |
|
if reason == "link enabled": |
|
1266
|
1 |
|
name = 'kytos/topology.notify_link_up_if_status' |
|
1267
|
1 |
|
content = {'reason': reason, "link": interface.link} |
|
1268
|
1 |
|
event = KytosEvent(name=name, content=content) |
|
1269
|
1 |
|
self.controller.buffers.app.put(event) |
|
1270
|
|
|
else: |
|
1271
|
1 |
|
self.notify_link_status_change(interface.link, reason) |
|
1272
|
|
|
|
|
1273
|
1 |
|
def notify_link_status_change(self, link: Link, reason='not given'): |
|
1274
|
|
|
"""Send an event to notify (up/down) from a status change on |
|
1275
|
|
|
a link.""" |
|
1276
|
1 |
|
link_id = link.id |
|
1277
|
1 |
|
with self.link_status_lock: |
|
1278
|
1 |
|
if ( |
|
1279
|
|
|
(not link.status_reason and link.status == EntityStatus.UP) |
|
1280
|
|
|
and link_id not in self.link_up |
|
1281
|
|
|
): |
|
1282
|
1 |
|
log.info(f"{link} changed status {link.status}, " |
|
1283
|
|
|
f"reason: {reason}") |
|
1284
|
1 |
|
self.link_up.add(link_id) |
|
1285
|
1 |
|
event = KytosEvent( |
|
1286
|
|
|
name='kytos/topology.link_up', |
|
1287
|
|
|
content={ |
|
1288
|
|
|
'link': link, |
|
1289
|
|
|
'reason': reason |
|
1290
|
|
|
}, |
|
1291
|
|
|
) |
|
1292
|
1 |
|
elif ( |
|
1293
|
|
|
(link.status_reason or link.status != EntityStatus.UP) |
|
1294
|
|
|
and link_id in self.link_up |
|
1295
|
|
|
): |
|
1296
|
1 |
|
log.info(f"{link} changed status {link.status}, " |
|
1297
|
|
|
f"reason: {reason}") |
|
1298
|
1 |
|
self.link_up.remove(link_id) |
|
1299
|
1 |
|
event = KytosEvent( |
|
1300
|
|
|
name='kytos/topology.link_down', |
|
1301
|
|
|
content={ |
|
1302
|
|
|
'link': link, |
|
1303
|
|
|
'reason': reason |
|
1304
|
|
|
}, |
|
1305
|
|
|
) |
|
1306
|
|
|
else: |
|
1307
|
1 |
|
return |
|
1308
|
1 |
|
self.controller.buffers.app.put(event) |
|
1309
|
|
|
|
|
1310
|
1 |
|
def notify_metadata_changes(self, obj, action): |
|
1311
|
|
|
"""Send an event to notify about metadata changes.""" |
|
1312
|
1 |
|
if isinstance(obj, Switch): |
|
1313
|
1 |
|
entity = 'switch' |
|
1314
|
1 |
|
entities = 'switches' |
|
1315
|
1 |
|
elif isinstance(obj, Interface): |
|
1316
|
1 |
|
entity = 'interface' |
|
1317
|
1 |
|
entities = 'interfaces' |
|
1318
|
1 |
|
elif isinstance(obj, Link): |
|
1319
|
1 |
|
entity = 'link' |
|
1320
|
1 |
|
entities = 'links' |
|
1321
|
|
|
else: |
|
1322
|
1 |
|
raise ValueError( |
|
1323
|
|
|
'Invalid object, supported: Switch, Interface, Link' |
|
1324
|
|
|
) |
|
1325
|
|
|
|
|
1326
|
1 |
|
name = f'kytos/topology.{entities}.metadata.{action}' |
|
1327
|
1 |
|
content = {entity: obj, 'metadata': obj.metadata.copy()} |
|
1328
|
1 |
|
event = KytosEvent(name=name, content=content) |
|
1329
|
1 |
|
self.controller.buffers.app.put(event) |
|
1330
|
1 |
|
log.debug(f'Metadata from {obj.id} was {action}.') |
|
1331
|
|
|
|
|
1332
|
1 |
|
@listen_to('kytos/topology.notify_link_up_if_status') |
|
1333
|
1 |
|
def on_notify_link_up_if_status(self, event): |
|
1334
|
|
|
"""Tries to notify link up and topology changes""" |
|
1335
|
|
|
link = event.content["link"] |
|
1336
|
|
|
reason = event.content["reason"] |
|
1337
|
|
|
self.notify_link_up_if_status(link, reason) |
|
1338
|
|
|
|
|
1339
|
1 |
|
@listen_to('.*.switch.port.created') |
|
1340
|
1 |
|
def on_notify_port_created(self, event): |
|
1341
|
|
|
"""Notify when a port is created.""" |
|
1342
|
|
|
self.notify_port_created(event) |
|
1343
|
|
|
|
|
1344
|
1 |
|
def notify_port_created(self, event): |
|
1345
|
|
|
"""Notify when a port is created.""" |
|
1346
|
1 |
|
name = 'kytos/topology.port.created' |
|
1347
|
1 |
|
event = KytosEvent(name=name, content=event.content) |
|
1348
|
1 |
|
self.controller.buffers.app.put(event) |
|
1349
|
|
|
|
|
1350
|
1 |
|
@staticmethod |
|
1351
|
1 |
|
def load_interfaces_tags_values(switch: Switch, |
|
1352
|
|
|
interfaces_details: List[dict]) -> None: |
|
1353
|
|
|
"""Load interfaces available tags (vlans).""" |
|
1354
|
1 |
|
if not interfaces_details: |
|
1355
|
|
|
return |
|
1356
|
1 |
|
for interface_details in interfaces_details: |
|
1357
|
1 |
|
available_tags = interface_details['available_tags'] |
|
1358
|
1 |
|
if not available_tags: |
|
1359
|
|
|
continue |
|
1360
|
1 |
|
log.debug(f"Interface id {interface_details['id']} loading " |
|
1361
|
|
|
f"{len(available_tags)} " |
|
1362
|
|
|
"available tags") |
|
1363
|
1 |
|
port_number = int(interface_details["id"].split(":")[-1]) |
|
1364
|
1 |
|
interface = switch.interfaces[port_number] |
|
1365
|
1 |
|
interface.set_available_tags_tag_ranges( |
|
1366
|
|
|
available_tags, |
|
1367
|
|
|
interface_details['tag_ranges'], |
|
1368
|
|
|
interface_details['special_available_tags'], |
|
1369
|
|
|
interface_details['special_tags'], |
|
1370
|
|
|
) |
|
1371
|
|
|
|
|
1372
|
1 |
|
@listen_to( |
|
1373
|
|
|
'topology.interruption.(start|end)', |
|
1374
|
|
|
pool="dynamic_single" |
|
1375
|
|
|
) |
|
1376
|
1 |
|
def on_interruption(self, event: KytosEvent): |
|
1377
|
|
|
"""Deals with service interruptions.""" |
|
1378
|
|
|
_, _, interrupt_type = event.name.rpartition(".") |
|
1379
|
|
|
if interrupt_type == "start": |
|
1380
|
|
|
self.handle_interruption_start(event) |
|
1381
|
|
|
elif interrupt_type == "end": |
|
1382
|
|
|
self.handle_interruption_end(event) |
|
1383
|
|
|
|
|
1384
|
1 |
View Code Duplication |
def handle_interruption_start(self, event: KytosEvent): |
|
|
|
|
|
|
1385
|
|
|
"""Deals with the start of service interruption.""" |
|
1386
|
1 |
|
interrupt_type = event.content['type'] |
|
1387
|
1 |
|
switches = event.content.get('switches', []) |
|
1388
|
1 |
|
interfaces = event.content.get('interfaces', []) |
|
1389
|
1 |
|
links = event.content.get('links', []) |
|
1390
|
1 |
|
log.info( |
|
1391
|
|
|
'Received interruption start of type \'%s\' ' |
|
1392
|
|
|
'affecting switches %s, interfaces %s, links %s', |
|
1393
|
|
|
interrupt_type, |
|
1394
|
|
|
switches, |
|
1395
|
|
|
interfaces, |
|
1396
|
|
|
links |
|
1397
|
|
|
) |
|
1398
|
|
|
# for switch_id in switches: |
|
1399
|
|
|
# pass |
|
1400
|
|
|
# for interface_id in interfaces: |
|
1401
|
|
|
# pass |
|
1402
|
1 |
|
for link_id in links: |
|
1403
|
1 |
|
link = self.controller.get_link(link_id) |
|
1404
|
1 |
|
if link is None: |
|
1405
|
|
|
log.error( |
|
1406
|
|
|
"Invalid link id '%s' for interruption of type '%s;", |
|
1407
|
|
|
link_id, |
|
1408
|
|
|
interrupt_type |
|
1409
|
|
|
) |
|
1410
|
|
|
else: |
|
1411
|
1 |
|
with link.link_lock: |
|
1412
|
1 |
|
self.notify_link_status_change(link, interrupt_type) |
|
1413
|
1 |
|
self.notify_topology_update() |
|
1414
|
|
|
|
|
1415
|
1 |
View Code Duplication |
def handle_interruption_end(self, event: KytosEvent): |
|
|
|
|
|
|
1416
|
|
|
"""Deals with the end of service interruption.""" |
|
1417
|
1 |
|
interrupt_type = event.content['type'] |
|
1418
|
1 |
|
switches = event.content.get('switches', []) |
|
1419
|
1 |
|
interfaces = event.content.get('interfaces', []) |
|
1420
|
1 |
|
links = event.content.get('links', []) |
|
1421
|
1 |
|
log.info( |
|
1422
|
|
|
'Received interruption end of type \'%s\' ' |
|
1423
|
|
|
'affecting switches %s, interfaces %s, links %s', |
|
1424
|
|
|
interrupt_type, |
|
1425
|
|
|
switches, |
|
1426
|
|
|
interfaces, |
|
1427
|
|
|
links |
|
1428
|
|
|
) |
|
1429
|
|
|
# for switch_id in switches: |
|
1430
|
|
|
# pass |
|
1431
|
|
|
# for interface_id in interfaces: |
|
1432
|
|
|
# pass |
|
1433
|
1 |
|
for link_id in links: |
|
1434
|
1 |
|
link = self.controller.get_link(link_id) |
|
1435
|
1 |
|
if link is None: |
|
1436
|
|
|
log.error( |
|
1437
|
|
|
"Invalid link id '%s' for interruption of type '%s;", |
|
1438
|
|
|
link_id, |
|
1439
|
|
|
interrupt_type |
|
1440
|
|
|
) |
|
1441
|
|
|
else: |
|
1442
|
1 |
|
with link.link_lock: |
|
1443
|
1 |
|
self.notify_link_status_change(link, interrupt_type) |
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1444
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self.notify_topology_update() |
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1445
|
|
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kytos-ng /
topology
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