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# pylint: disable=protected-access, too-many-lines |
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"""Main module of kytos/mef_eline Kytos Network Application. |
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NApp to provision circuits from user request. |
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""" |
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import pathlib |
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import time |
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import traceback |
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from collections import defaultdict |
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from contextlib import ExitStack |
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from copy import deepcopy |
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from threading import Lock |
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from typing import Optional |
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from pydantic import ValidationError |
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from kytos.core import KytosNApp, log, rest |
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from kytos.core.events import KytosEvent |
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from kytos.core.exceptions import KytosTagError |
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from kytos.core.helpers import (alisten_to, listen_to, load_spec, now, |
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validate_openapi) |
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from kytos.core.interface import TAG, UNI, TAGRange |
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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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get_json_or_400) |
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from kytos.core.tag_ranges import get_tag_ranges |
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from napps.kytos.mef_eline import controllers, settings |
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from napps.kytos.mef_eline.exceptions import (DisabledSwitch, |
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DuplicatedNoTagUNI, |
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FlowModException, InvalidPath) |
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from napps.kytos.mef_eline.models import (EVC, DynamicPathManager, EVCDeploy, |
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Path) |
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from napps.kytos.mef_eline.scheduler import CircuitSchedule, Scheduler |
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from napps.kytos.mef_eline.utils import (_does_uni_affect_evc, aemit_event, |
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emit_event, get_vlan_tags_and_masks, |
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map_evc_event_content, |
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merge_flow_dicts, prepare_delete_flow, |
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send_flow_mods_http) |
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# pylint: disable=too-many-public-methods |
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class Main(KytosNApp): |
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"""Main class of amlight/mef_eline 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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"""Replace the '__init__' method for the KytosNApp subclass. |
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The setup method is automatically called by the controller when your |
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application is loaded. |
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So, if you have any setup routine, insert it here. |
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""" |
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# object used to scheduler circuit events |
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self.sched = Scheduler() |
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# object to save and load circuits |
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self.mongo_controller = self.get_eline_controller() |
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self.mongo_controller.bootstrap_indexes() |
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# set the controller that will manager the dynamic paths |
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DynamicPathManager.set_controller(self.controller) |
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# dictionary of EVCs created. It acts as a circuit buffer. |
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# Every create/update/delete must be synced to mongodb. |
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self.circuits = dict[str, EVC]() |
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self._intf_events = defaultdict(dict) |
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self._lock_interfaces = defaultdict(Lock) |
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self.table_group = {"epl": 0, "evpl": 0} |
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self._lock = Lock() |
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self.multi_evc_lock = Lock() |
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self.execute_as_loop(settings.DEPLOY_EVCS_INTERVAL) |
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self.load_all_evcs() |
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self._topology_updated_at = None |
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def get_evcs_by_svc_level(self, enable_filter: bool = True) -> list[EVC]: |
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"""Get circuits sorted by desc service level and asc creation_time. |
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In the future, as more ops are offloaded it should be get from the DB. |
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""" |
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if enable_filter: |
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return sorted( |
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[circuit for circuit in self.circuits.values() |
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if circuit.is_enabled()], |
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key=lambda x: (-x.service_level, x.creation_time), |
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) |
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return sorted(self.circuits.values(), |
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key=lambda x: (-x.service_level, x.creation_time)) |
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@staticmethod |
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def get_eline_controller(): |
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"""Return the ELineController instance.""" |
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return controllers.ELineController() |
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def execute(self): |
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"""Execute once when the napp is running.""" |
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if self._lock.locked(): |
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return |
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log.debug("Starting consistency routine") |
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with self._lock: |
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self.execute_consistency() |
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log.debug("Finished consistency routine") |
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def should_be_checked(self, circuit): |
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"Verify if the circuit meets the necessary conditions to be checked" |
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# pylint: disable=too-many-boolean-expressions |
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if ( |
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circuit.is_enabled() |
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and not circuit.is_active() |
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and not circuit.lock.locked() |
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and not circuit.has_recent_removed_flow() |
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and not circuit.is_recent_updated() |
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and circuit.are_unis_active() |
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# if a inter-switch EVC does not have current_path, it does not |
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# make sense to run sdntrace on it |
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and (circuit.is_intra_switch() or circuit.current_path) |
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): |
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return True |
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return False |
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def execute_consistency(self): |
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"""Execute consistency routine.""" |
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circuits_to_check = [] |
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for circuit in self.get_evcs_by_svc_level(enable_filter=False): |
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if self.should_be_checked(circuit): |
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circuits_to_check.append(circuit) |
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circuit.try_setup_failover_path(warn_if_not_path=False) |
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circuits_checked = EVCDeploy.check_list_traces(circuits_to_check) |
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for circuit in circuits_to_check: |
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is_checked = circuits_checked.get(circuit.id) |
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if is_checked: |
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circuit.execution_rounds = 0 |
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log.info(f"{circuit} enabled but inactive - activating") |
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with circuit.lock: |
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circuit.activate() |
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circuit.sync() |
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else: |
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circuit.execution_rounds += 1 |
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if circuit.execution_rounds > settings.WAIT_FOR_OLD_PATH: |
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log.info(f"{circuit} enabled but inactive - redeploy") |
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with circuit.lock: |
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circuit.deploy() |
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def shutdown(self): |
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"""Execute when your napp is unloaded. |
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If you have some cleanup procedure, insert it here. |
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""" |
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@rest("/v2/evc/", methods=["GET"]) |
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def list_circuits(self, request: Request) -> JSONResponse: |
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"""Endpoint to return circuits stored. |
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archive query arg if defined (not null) will be filtered |
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accordingly, by default only non archived evcs will be listed |
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""" |
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log.debug("list_circuits /v2/evc") |
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args = request.query_params |
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archived = args.get("archived", "false").lower() |
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args = {k: v for k, v in args.items() if k not in {"archived"}} |
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circuits = self.mongo_controller.get_circuits(archived=archived, |
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metadata=args) |
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circuits = circuits['circuits'] |
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return JSONResponse(circuits) |
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@rest("/v2/evc/schedule", methods=["GET"]) |
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def list_schedules(self, _request: Request) -> JSONResponse: |
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"""Endpoint to return all schedules stored for all circuits. |
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Return a JSON with the following template: |
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[{"schedule_id": <schedule_id>, |
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"circuit_id": <circuit_id>, |
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"schedule": <schedule object>}] |
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""" |
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log.debug("list_schedules /v2/evc/schedule") |
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circuits = self.mongo_controller.get_circuits()['circuits'].values() |
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if not circuits: |
184
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result = {} |
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status = 200 |
186
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return JSONResponse(result, status_code=status) |
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result = [] |
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status = 200 |
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for circuit in circuits: |
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circuit_scheduler = circuit.get("circuit_scheduler") |
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if circuit_scheduler: |
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for scheduler in circuit_scheduler: |
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value = { |
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"schedule_id": scheduler.get("id"), |
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"circuit_id": circuit.get("id"), |
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"schedule": scheduler, |
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} |
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result.append(value) |
200
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|
201
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1 |
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log.debug("list_schedules result %s %s", result, status) |
202
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1 |
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return JSONResponse(result, status_code=status) |
203
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|
204
|
1 |
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@rest("/v2/evc/{circuit_id}", methods=["GET"]) |
205
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1 |
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def get_circuit(self, request: Request) -> JSONResponse: |
206
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"""Endpoint to return a circuit based on id.""" |
207
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1 |
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circuit_id = request.path_params["circuit_id"] |
208
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log.debug("get_circuit /v2/evc/%s", circuit_id) |
209
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1 |
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circuit = self.mongo_controller.get_circuit(circuit_id) |
210
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1 |
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if not circuit: |
211
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1 |
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result = f"circuit_id {circuit_id} not found" |
212
|
1 |
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log.debug("get_circuit result %s %s", result, 404) |
213
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1 |
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raise HTTPException(404, detail=result) |
214
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1 |
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status = 200 |
215
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1 |
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log.debug("get_circuit result %s %s", circuit, status) |
216
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1 |
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return JSONResponse(circuit, status_code=status) |
217
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|
218
|
|
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# pylint: disable=too-many-branches, too-many-statements |
219
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1 |
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@rest("/v2/evc/", methods=["POST"]) |
220
|
1 |
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@validate_openapi(spec) |
221
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1 |
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def create_circuit(self, request: Request) -> JSONResponse: |
222
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"""Try to create a new circuit. |
223
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|
224
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Firstly, for EVPL: E-Line NApp verifies if UNI_A's requested C-VID and |
225
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UNI_Z's requested C-VID are available from the interfaces' pools. This |
226
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is checked when creating the UNI object. |
227
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|
228
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|
|
Then, E-Line NApp requests a primary and a backup path to the |
229
|
|
|
Pathfinder NApp using the attributes primary_links and backup_links |
230
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|
|
submitted via REST |
231
|
|
|
|
232
|
|
|
# For each link composing paths in #3: |
233
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# - E-Line NApp requests a S-VID available from the link VLAN pool. |
234
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# - Using the S-VID obtained, generate abstract flow entries to be |
235
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|
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# sent to FlowManager |
236
|
|
|
|
237
|
|
|
Push abstract flow entries to FlowManager and FlowManager pushes |
238
|
|
|
OpenFlow entries to datapaths |
239
|
|
|
|
240
|
|
|
E-Line NApp generates an event to notify all Kytos NApps of a new EVC |
241
|
|
|
creation |
242
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|
|
|
243
|
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|
Finnaly, notify user of the status of its request. |
244
|
|
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""" |
245
|
|
|
# Try to create the circuit object |
246
|
1 |
|
log.debug("create_circuit /v2/evc/") |
247
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
248
|
|
|
|
249
|
1 |
|
try: |
250
|
1 |
|
evc = self._evc_from_dict(data) |
251
|
1 |
|
except (ValueError, KytosTagError) as exception: |
252
|
1 |
|
log.debug("create_circuit result %s %s", exception, 400) |
253
|
1 |
|
raise HTTPException(400, detail=str(exception)) from exception |
254
|
1 |
|
if evc.primary_path: |
255
|
|
|
try: |
256
|
|
|
evc.primary_path.is_valid( |
257
|
|
|
evc.uni_a.interface.switch, |
258
|
|
|
evc.uni_z.interface.switch, |
259
|
|
|
bool(evc.circuit_scheduler), |
260
|
|
|
) |
261
|
|
|
except InvalidPath as exception: |
262
|
|
|
raise HTTPException( |
263
|
|
|
400, |
264
|
|
|
detail=f"primary_path is not valid: {exception}" |
265
|
|
|
) from exception |
266
|
1 |
|
if evc.backup_path: |
267
|
|
|
try: |
268
|
|
|
evc.backup_path.is_valid( |
269
|
|
|
evc.uni_a.interface.switch, |
270
|
|
|
evc.uni_z.interface.switch, |
271
|
|
|
bool(evc.circuit_scheduler), |
272
|
|
|
) |
273
|
|
|
except InvalidPath as exception: |
274
|
|
|
raise HTTPException( |
275
|
|
|
400, |
276
|
|
|
detail=f"backup_path is not valid: {exception}" |
277
|
|
|
) from exception |
278
|
|
|
|
279
|
1 |
|
if not evc._tag_lists_equal(): |
280
|
|
|
detail = "UNI_A and UNI_Z tag lists should be the same." |
281
|
|
|
raise HTTPException(400, detail=detail) |
282
|
|
|
|
283
|
1 |
|
try: |
284
|
1 |
|
evc._validate_has_primary_or_dynamic() |
285
|
1 |
|
except ValueError as exception: |
286
|
1 |
|
raise HTTPException(400, detail=str(exception)) from exception |
287
|
|
|
|
288
|
1 |
|
try: |
289
|
1 |
|
self._check_no_tag_duplication(evc.id, evc.uni_a, evc.uni_z) |
290
|
|
|
except DuplicatedNoTagUNI as exception: |
291
|
|
|
log.debug("create_circuit result %s %s", exception, 409) |
292
|
|
|
raise HTTPException(409, detail=str(exception)) from exception |
293
|
|
|
|
294
|
1 |
|
try: |
295
|
1 |
|
self._use_uni_tags(evc) |
296
|
1 |
|
except KytosTagError as exception: |
297
|
1 |
|
raise HTTPException(400, detail=str(exception)) from exception |
298
|
|
|
|
299
|
|
|
# save circuit |
300
|
1 |
|
try: |
301
|
1 |
|
evc.sync() |
302
|
|
|
except ValidationError as exception: |
303
|
|
|
raise HTTPException(400, detail=str(exception)) from exception |
304
|
|
|
|
305
|
|
|
# store circuit in dictionary |
306
|
1 |
|
self.circuits[evc.id] = evc |
307
|
|
|
|
308
|
|
|
# Schedule the circuit deploy |
309
|
1 |
|
self.sched.add(evc) |
310
|
|
|
|
311
|
|
|
# Circuit has no schedule, deploy now |
312
|
1 |
|
deployed = False |
313
|
1 |
|
if not evc.circuit_scheduler: |
314
|
1 |
|
with evc.lock: |
315
|
1 |
|
deployed = evc.deploy() |
316
|
|
|
|
317
|
|
|
# Notify users |
318
|
1 |
|
result = {"circuit_id": evc.id, "deployed": deployed} |
319
|
1 |
|
status = 201 |
320
|
1 |
|
log.debug("create_circuit result %s %s", result, status) |
321
|
1 |
|
emit_event(self.controller, name="created", |
322
|
|
|
content=map_evc_event_content(evc)) |
323
|
1 |
|
return JSONResponse(result, status_code=status) |
324
|
|
|
|
325
|
1 |
|
@staticmethod |
326
|
1 |
|
def _use_uni_tags(evc): |
327
|
1 |
|
uni_a = evc.uni_a |
328
|
1 |
|
evc._use_uni_vlan(uni_a) |
329
|
1 |
|
try: |
330
|
1 |
|
uni_z = evc.uni_z |
331
|
1 |
|
evc._use_uni_vlan(uni_z) |
332
|
1 |
|
except KytosTagError as err: |
333
|
1 |
|
evc.make_uni_vlan_available(uni_a) |
334
|
1 |
|
raise err |
335
|
|
|
|
336
|
1 |
|
@listen_to('kytos/flow_manager.flow.removed') |
337
|
1 |
|
def on_flow_delete(self, event): |
338
|
|
|
"""Capture delete messages to keep track when flows got removed.""" |
339
|
|
|
self.handle_flow_delete(event) |
340
|
|
|
|
341
|
1 |
|
def handle_flow_delete(self, event): |
342
|
|
|
"""Keep track when the EVC got flows removed by deriving its cookie.""" |
343
|
1 |
|
flow = event.content["flow"] |
344
|
1 |
|
evc = self.circuits.get(EVC.get_id_from_cookie(flow.cookie)) |
345
|
1 |
|
if evc: |
346
|
1 |
|
log.debug("Flow removed in EVC %s", evc.id) |
347
|
1 |
|
evc.set_flow_removed_at() |
348
|
|
|
|
349
|
1 |
|
@rest("/v2/evc/{circuit_id}", methods=["PATCH"]) |
350
|
1 |
|
@validate_openapi(spec) |
351
|
1 |
|
def update(self, request: Request) -> JSONResponse: |
352
|
|
|
"""Update a circuit based on payload. |
353
|
|
|
|
354
|
|
|
The EVC attributes (creation_time, active, current_path, |
355
|
|
|
failover_path, _id, archived) can't be updated. |
356
|
|
|
""" |
357
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
358
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
359
|
1 |
|
log.debug("update /v2/evc/%s", circuit_id) |
360
|
1 |
|
try: |
361
|
1 |
|
evc = self.circuits[circuit_id] |
362
|
1 |
|
except KeyError: |
363
|
1 |
|
result = f"circuit_id {circuit_id} not found" |
364
|
1 |
|
log.debug("update result %s %s", result, 404) |
365
|
1 |
|
raise HTTPException(404, detail=result) from KeyError |
366
|
|
|
|
367
|
1 |
|
try: |
368
|
1 |
|
updated_data = self._evc_dict_with_instances(data) |
369
|
1 |
|
self._check_no_tag_duplication( |
370
|
|
|
circuit_id, updated_data.get("uni_a"), |
371
|
|
|
updated_data.get("uni_z") |
372
|
|
|
) |
373
|
1 |
|
enable, redeploy = evc.update(**updated_data) |
374
|
1 |
|
except (ValueError, KytosTagError, ValidationError) as exception: |
375
|
1 |
|
log.debug("update result %s %s", exception, 400) |
376
|
1 |
|
raise HTTPException(400, detail=str(exception)) from exception |
377
|
|
|
except DuplicatedNoTagUNI as exception: |
378
|
|
|
log.debug("update result %s %s", exception, 409) |
379
|
|
|
raise HTTPException(409, detail=str(exception)) from exception |
380
|
|
|
except DisabledSwitch as exception: |
381
|
|
|
log.debug("update result %s %s", exception, 409) |
382
|
|
|
raise HTTPException( |
383
|
|
|
409, |
384
|
|
|
detail=f"Path is not valid: {exception}" |
385
|
|
|
) from exception |
386
|
1 |
|
redeployed = False |
387
|
1 |
|
if evc.is_active(): |
388
|
|
|
if enable is False: # disable if active |
389
|
|
|
with evc.lock: |
390
|
|
|
evc.remove() |
391
|
|
|
elif redeploy is not None: # redeploy if active |
392
|
|
|
with evc.lock: |
393
|
|
|
evc.remove() |
394
|
|
|
redeployed = evc.deploy() |
395
|
|
|
else: |
396
|
1 |
|
if enable is True: # enable if inactive |
397
|
1 |
|
with evc.lock: |
398
|
1 |
|
redeployed = evc.deploy() |
399
|
1 |
|
elif evc.is_enabled() and redeploy: |
400
|
1 |
|
with evc.lock: |
401
|
1 |
|
evc.remove() |
402
|
1 |
|
redeployed = evc.deploy() |
403
|
1 |
|
result = {evc.id: evc.as_dict(), 'redeployed': redeployed} |
404
|
1 |
|
status = 200 |
405
|
|
|
|
406
|
1 |
|
log.debug("update result %s %s", result, status) |
407
|
1 |
|
emit_event(self.controller, "updated", |
408
|
|
|
content=map_evc_event_content(evc, **data)) |
409
|
1 |
|
return JSONResponse(result, status_code=status) |
410
|
|
|
|
411
|
1 |
|
@rest("/v2/evc/{circuit_id}", methods=["DELETE"]) |
412
|
1 |
|
def delete_circuit(self, request: Request) -> JSONResponse: |
413
|
|
|
"""Remove a circuit. |
414
|
|
|
|
415
|
|
|
First, the flows are removed from the switches, and then the EVC is |
416
|
|
|
disabled. |
417
|
|
|
""" |
418
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
419
|
1 |
|
log.debug("delete_circuit /v2/evc/%s", circuit_id) |
420
|
1 |
|
try: |
421
|
1 |
|
evc = self.circuits.pop(circuit_id) |
422
|
1 |
|
except KeyError: |
423
|
1 |
|
result = f"circuit_id {circuit_id} not found" |
424
|
1 |
|
log.debug("delete_circuit result %s %s", result, 404) |
425
|
1 |
|
raise HTTPException(404, detail=result) from KeyError |
426
|
1 |
|
log.info("Removing %s", evc) |
427
|
|
|
|
428
|
1 |
|
with evc.lock: |
429
|
1 |
|
if not evc.archived: |
430
|
1 |
|
evc.deactivate() |
431
|
1 |
|
evc.disable() |
432
|
1 |
|
self.sched.remove(evc) |
433
|
1 |
|
evc.remove_current_flows(sync=False) |
434
|
1 |
|
evc.remove_failover_flows(sync=False) |
435
|
1 |
|
evc.archive() |
436
|
1 |
|
evc.remove_uni_tags() |
437
|
1 |
|
evc.sync() |
438
|
1 |
|
emit_event( |
439
|
|
|
self.controller, "deleted", |
440
|
|
|
content=map_evc_event_content(evc) |
441
|
|
|
) |
442
|
|
|
|
443
|
1 |
|
log.info("EVC removed. %s", evc) |
444
|
1 |
|
result = {"response": f"Circuit {circuit_id} removed"} |
445
|
1 |
|
status = 200 |
446
|
1 |
|
log.debug("delete_circuit result %s %s", result, status) |
447
|
|
|
|
448
|
1 |
|
return JSONResponse(result, status_code=status) |
449
|
|
|
|
450
|
1 |
|
@rest("/v2/evc/{circuit_id}/metadata", methods=["GET"]) |
451
|
1 |
|
def get_metadata(self, request: Request) -> JSONResponse: |
452
|
|
|
"""Get metadata from an EVC.""" |
453
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
454
|
1 |
|
try: |
455
|
1 |
|
return ( |
456
|
|
|
JSONResponse({"metadata": self.circuits[circuit_id].metadata}) |
457
|
|
|
) |
458
|
|
|
except KeyError as error: |
459
|
|
|
raise HTTPException( |
460
|
|
|
404, |
461
|
|
|
detail=f"circuit_id {circuit_id} not found." |
462
|
|
|
) from error |
463
|
|
|
|
464
|
1 |
View Code Duplication |
@rest("/v2/evc/metadata", methods=["POST"]) |
|
|
|
|
465
|
1 |
|
@validate_openapi(spec) |
466
|
1 |
|
def bulk_add_metadata(self, request: Request) -> JSONResponse: |
467
|
|
|
"""Add metadata to a bulk of EVCs.""" |
468
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
469
|
1 |
|
circuit_ids = data.pop("circuit_ids") |
470
|
|
|
|
471
|
1 |
|
self.mongo_controller.update_evcs_metadata(circuit_ids, data, "add") |
472
|
|
|
|
473
|
1 |
|
fail_evcs = [] |
474
|
1 |
|
for _id in circuit_ids: |
475
|
1 |
|
try: |
476
|
1 |
|
evc = self.circuits[_id] |
477
|
1 |
|
evc.extend_metadata(data) |
478
|
1 |
|
except KeyError: |
479
|
1 |
|
fail_evcs.append(_id) |
480
|
|
|
|
481
|
1 |
|
if fail_evcs: |
482
|
1 |
|
raise HTTPException(404, detail=fail_evcs) |
483
|
1 |
|
return JSONResponse("Operation successful", status_code=201) |
484
|
|
|
|
485
|
1 |
|
@rest("/v2/evc/{circuit_id}/metadata", methods=["POST"]) |
486
|
1 |
|
@validate_openapi(spec) |
487
|
1 |
|
def add_metadata(self, request: Request) -> JSONResponse: |
488
|
|
|
"""Add metadata to an EVC.""" |
489
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
490
|
1 |
|
metadata = get_json_or_400(request, self.controller.loop) |
491
|
1 |
|
if not isinstance(metadata, dict): |
492
|
|
|
raise HTTPException(400, f"Invalid metadata value: {metadata}") |
493
|
1 |
|
try: |
494
|
1 |
|
evc = self.circuits[circuit_id] |
495
|
1 |
|
except KeyError as error: |
496
|
1 |
|
raise HTTPException( |
497
|
|
|
404, |
498
|
|
|
detail=f"circuit_id {circuit_id} not found." |
499
|
|
|
) from error |
500
|
|
|
|
501
|
1 |
|
evc.extend_metadata(metadata) |
502
|
1 |
|
evc.sync() |
503
|
1 |
|
return JSONResponse("Operation successful", status_code=201) |
504
|
|
|
|
505
|
1 |
View Code Duplication |
@rest("/v2/evc/metadata/{key}", methods=["DELETE"]) |
|
|
|
|
506
|
1 |
|
@validate_openapi(spec) |
507
|
1 |
|
def bulk_delete_metadata(self, request: Request) -> JSONResponse: |
508
|
|
|
"""Delete metada from a bulk of EVCs""" |
509
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
510
|
1 |
|
key = request.path_params["key"] |
511
|
1 |
|
circuit_ids = data.pop("circuit_ids") |
512
|
1 |
|
self.mongo_controller.update_evcs_metadata( |
513
|
|
|
circuit_ids, {key: ""}, "del" |
514
|
|
|
) |
515
|
|
|
|
516
|
1 |
|
fail_evcs = [] |
517
|
1 |
|
for _id in circuit_ids: |
518
|
1 |
|
try: |
519
|
1 |
|
evc = self.circuits[_id] |
520
|
1 |
|
evc.remove_metadata(key) |
521
|
1 |
|
except KeyError: |
522
|
1 |
|
fail_evcs.append(_id) |
523
|
|
|
|
524
|
1 |
|
if fail_evcs: |
525
|
1 |
|
raise HTTPException(404, detail=fail_evcs) |
526
|
1 |
|
return JSONResponse("Operation successful") |
527
|
|
|
|
528
|
1 |
|
@rest("/v2/evc/{circuit_id}/metadata/{key}", methods=["DELETE"]) |
529
|
1 |
|
def delete_metadata(self, request: Request) -> JSONResponse: |
530
|
|
|
"""Delete metadata from an EVC.""" |
531
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
532
|
1 |
|
key = request.path_params["key"] |
533
|
1 |
|
try: |
534
|
1 |
|
evc = self.circuits[circuit_id] |
535
|
1 |
|
except KeyError as error: |
536
|
1 |
|
raise HTTPException( |
537
|
|
|
404, |
538
|
|
|
detail=f"circuit_id {circuit_id} not found." |
539
|
|
|
) from error |
540
|
|
|
|
541
|
1 |
|
evc.remove_metadata(key) |
542
|
1 |
|
evc.sync() |
543
|
1 |
|
return JSONResponse("Operation successful") |
544
|
|
|
|
545
|
1 |
|
@rest("/v2/evc/{circuit_id}/redeploy", methods=["PATCH"]) |
546
|
1 |
|
def redeploy(self, request: Request) -> JSONResponse: |
547
|
|
|
"""Endpoint to force the redeployment of an EVC.""" |
548
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
549
|
1 |
|
try_avoid_same_s_vlan = request.query_params.get( |
550
|
|
|
"try_avoid_same_s_vlan", "true" |
551
|
|
|
) |
552
|
1 |
|
try_avoid_same_s_vlan = try_avoid_same_s_vlan.lower() |
553
|
1 |
|
if try_avoid_same_s_vlan not in {"true", "false"}: |
554
|
|
|
msg = "Parameter try_avoid_same_s_vlan has an invalid value." |
555
|
|
|
raise HTTPException(400, detail=msg) |
556
|
1 |
|
log.debug("redeploy /v2/evc/%s/redeploy", circuit_id) |
557
|
1 |
|
try: |
558
|
1 |
|
evc = self.circuits[circuit_id] |
559
|
1 |
|
except KeyError: |
560
|
1 |
|
raise HTTPException( |
561
|
|
|
404, |
562
|
|
|
detail=f"circuit_id {circuit_id} not found" |
563
|
|
|
) from KeyError |
564
|
1 |
|
deployed = False |
565
|
1 |
|
if evc.is_enabled(): |
566
|
1 |
|
with evc.lock: |
567
|
1 |
|
path_dict = evc.remove_current_flows( |
568
|
|
|
sync=False, |
569
|
|
|
return_path=try_avoid_same_s_vlan == "true" |
570
|
|
|
) |
571
|
1 |
|
evc.remove_failover_flows(sync=True) |
572
|
1 |
|
deployed = evc.deploy(path_dict) |
573
|
1 |
|
if deployed: |
574
|
1 |
|
result = {"response": f"Circuit {circuit_id} redeploy received."} |
575
|
1 |
|
status = 202 |
576
|
|
|
else: |
577
|
1 |
|
result = { |
578
|
|
|
"response": f"Circuit {circuit_id} is disabled." |
579
|
|
|
} |
580
|
1 |
|
status = 409 |
581
|
|
|
|
582
|
1 |
|
return JSONResponse(result, status_code=status) |
583
|
|
|
|
584
|
1 |
|
@rest("/v2/evc/schedule/", methods=["POST"]) |
585
|
1 |
|
@validate_openapi(spec) |
586
|
1 |
|
def create_schedule(self, request: Request) -> JSONResponse: |
587
|
|
|
""" |
588
|
|
|
Create a new schedule for a given circuit. |
589
|
|
|
|
590
|
|
|
This service do no check if there are conflicts with another schedule. |
591
|
|
|
Payload example: |
592
|
|
|
{ |
593
|
|
|
"circuit_id":"aa:bb:cc", |
594
|
|
|
"schedule": { |
595
|
|
|
"date": "2019-08-07T14:52:10.967Z", |
596
|
|
|
"interval": "string", |
597
|
|
|
"frequency": "1 * * * *", |
598
|
|
|
"action": "create" |
599
|
|
|
} |
600
|
|
|
} |
601
|
|
|
""" |
602
|
1 |
|
log.debug("create_schedule /v2/evc/schedule/") |
603
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
604
|
1 |
|
circuit_id = data["circuit_id"] |
605
|
1 |
|
schedule_data = data["schedule"] |
606
|
|
|
|
607
|
|
|
# Get EVC from circuits buffer |
608
|
1 |
|
circuits = self._get_circuits_buffer() |
609
|
|
|
|
610
|
|
|
# get the circuit |
611
|
1 |
|
evc = circuits.get(circuit_id) |
612
|
|
|
|
613
|
|
|
# get the circuit |
614
|
1 |
|
if not evc: |
615
|
1 |
|
result = f"circuit_id {circuit_id} not found" |
616
|
1 |
|
log.debug("create_schedule result %s %s", result, 404) |
617
|
1 |
|
raise HTTPException(404, detail=result) |
618
|
|
|
|
619
|
|
|
# new schedule from dict |
620
|
1 |
|
new_schedule = CircuitSchedule.from_dict(schedule_data) |
621
|
|
|
|
622
|
|
|
# If there is no schedule, create the list |
623
|
1 |
|
if not evc.circuit_scheduler: |
624
|
1 |
|
evc.circuit_scheduler = [] |
625
|
|
|
|
626
|
|
|
# Add the new schedule |
627
|
1 |
|
evc.circuit_scheduler.append(new_schedule) |
628
|
|
|
|
629
|
|
|
# Add schedule job |
630
|
1 |
|
self.sched.add_circuit_job(evc, new_schedule) |
631
|
|
|
|
632
|
|
|
# save circuit to mongodb |
633
|
1 |
|
evc.sync() |
634
|
|
|
|
635
|
1 |
|
result = new_schedule.as_dict() |
636
|
1 |
|
status = 201 |
637
|
|
|
|
638
|
1 |
|
log.debug("create_schedule result %s %s", result, status) |
639
|
1 |
|
return JSONResponse(result, status_code=status) |
640
|
|
|
|
641
|
1 |
|
@rest("/v2/evc/schedule/{schedule_id}", methods=["PATCH"]) |
642
|
1 |
|
@validate_openapi(spec) |
643
|
1 |
|
def update_schedule(self, request: Request) -> JSONResponse: |
644
|
|
|
"""Update a schedule. |
645
|
|
|
|
646
|
|
|
Change all attributes from the given schedule from a EVC circuit. |
647
|
|
|
The schedule ID is preserved as default. |
648
|
|
|
Payload example: |
649
|
|
|
{ |
650
|
|
|
"date": "2019-08-07T14:52:10.967Z", |
651
|
|
|
"interval": "string", |
652
|
|
|
"frequency": "1 * * *", |
653
|
|
|
"action": "create" |
654
|
|
|
} |
655
|
|
|
""" |
656
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
657
|
1 |
|
schedule_id = request.path_params["schedule_id"] |
658
|
1 |
|
log.debug("update_schedule /v2/evc/schedule/%s", schedule_id) |
659
|
|
|
|
660
|
|
|
# Try to find a circuit schedule |
661
|
1 |
|
evc, found_schedule = self._find_evc_by_schedule_id(schedule_id) |
662
|
|
|
|
663
|
|
|
# Can not modify circuits deleted and archived |
664
|
1 |
|
if not found_schedule: |
665
|
1 |
|
result = f"schedule_id {schedule_id} not found" |
666
|
1 |
|
log.debug("update_schedule result %s %s", result, 404) |
667
|
1 |
|
raise HTTPException(404, detail=result) |
668
|
|
|
|
669
|
1 |
|
new_schedule = CircuitSchedule.from_dict(data) |
670
|
1 |
|
new_schedule.id = found_schedule.id |
671
|
|
|
# Remove the old schedule |
672
|
1 |
|
evc.circuit_scheduler.remove(found_schedule) |
673
|
|
|
# Append the modified schedule |
674
|
1 |
|
evc.circuit_scheduler.append(new_schedule) |
675
|
|
|
|
676
|
|
|
# Cancel all schedule jobs |
677
|
1 |
|
self.sched.cancel_job(found_schedule.id) |
678
|
|
|
# Add the new circuit schedule |
679
|
1 |
|
self.sched.add_circuit_job(evc, new_schedule) |
680
|
|
|
# Save EVC to mongodb |
681
|
1 |
|
evc.sync() |
682
|
|
|
|
683
|
1 |
|
result = new_schedule.as_dict() |
684
|
1 |
|
status = 200 |
685
|
|
|
|
686
|
1 |
|
log.debug("update_schedule result %s %s", result, status) |
687
|
1 |
|
return JSONResponse(result, status_code=status) |
688
|
|
|
|
689
|
1 |
|
@rest("/v2/evc/schedule/{schedule_id}", methods=["DELETE"]) |
690
|
1 |
|
def delete_schedule(self, request: Request) -> JSONResponse: |
691
|
|
|
"""Remove a circuit schedule. |
692
|
|
|
|
693
|
|
|
Remove the Schedule from EVC. |
694
|
|
|
Remove the Schedule from cron job. |
695
|
|
|
Save the EVC to the Storehouse. |
696
|
|
|
""" |
697
|
1 |
|
schedule_id = request.path_params["schedule_id"] |
698
|
1 |
|
log.debug("delete_schedule /v2/evc/schedule/%s", schedule_id) |
699
|
1 |
|
evc, found_schedule = self._find_evc_by_schedule_id(schedule_id) |
700
|
|
|
|
701
|
|
|
# Can not modify circuits deleted and archived |
702
|
1 |
|
if not found_schedule: |
703
|
1 |
|
result = f"schedule_id {schedule_id} not found" |
704
|
1 |
|
log.debug("delete_schedule result %s %s", result, 404) |
705
|
1 |
|
raise HTTPException(404, detail=result) |
706
|
|
|
|
707
|
|
|
# Remove the old schedule |
708
|
1 |
|
evc.circuit_scheduler.remove(found_schedule) |
709
|
|
|
|
710
|
|
|
# Cancel all schedule jobs |
711
|
1 |
|
self.sched.cancel_job(found_schedule.id) |
712
|
|
|
# Save EVC to mongodb |
713
|
1 |
|
evc.sync() |
714
|
|
|
|
715
|
1 |
|
result = "Schedule removed" |
716
|
1 |
|
status = 200 |
717
|
|
|
|
718
|
1 |
|
log.debug("delete_schedule result %s %s", result, status) |
719
|
1 |
|
return JSONResponse(result, status_code=status) |
720
|
|
|
|
721
|
1 |
|
def _check_no_tag_duplication( |
722
|
|
|
self, |
723
|
|
|
evc_id: str, |
724
|
|
|
uni_a: Optional[UNI] = None, |
725
|
|
|
uni_z: Optional[UNI] = None |
726
|
|
|
): |
727
|
|
|
"""Check if the given EVC has UNIs with no tag and if these are |
728
|
|
|
duplicated. Raise DuplicatedNoTagUNI if duplication is found. |
729
|
|
|
Args: |
730
|
|
|
evc (dict): EVC to be analyzed. |
731
|
|
|
""" |
732
|
|
|
|
733
|
|
|
# No UNIs |
734
|
1 |
|
if not (uni_a or uni_z): |
735
|
1 |
|
return |
736
|
|
|
|
737
|
1 |
|
if (not (uni_a and not uni_a.user_tag) and |
738
|
|
|
not (uni_z and not uni_z.user_tag)): |
739
|
1 |
|
return |
740
|
1 |
|
for circuit in self.circuits.copy().values(): |
741
|
1 |
|
if (not circuit.archived and circuit._id != evc_id): |
742
|
1 |
|
if uni_a and uni_a.user_tag is None: |
743
|
1 |
|
circuit.check_no_tag_duplicate(uni_a) |
744
|
1 |
|
if uni_z and uni_z.user_tag is None: |
745
|
1 |
|
circuit.check_no_tag_duplicate(uni_z) |
746
|
|
|
|
747
|
1 |
|
@listen_to("kytos/topology.link_up") |
748
|
1 |
|
def on_link_up(self, event): |
749
|
|
|
"""Change circuit when link is up or end_maintenance.""" |
750
|
|
|
self.handle_link_up(event) |
751
|
|
|
|
752
|
1 |
|
def handle_link_up(self, event): |
753
|
|
|
"""Change circuit when link is up or end_maintenance.""" |
754
|
1 |
|
log.info("Event handle_link_up %s", event.content["link"]) |
755
|
1 |
|
for evc in self.get_evcs_by_svc_level(): |
756
|
1 |
|
if evc.is_enabled() and not evc.archived: |
757
|
1 |
|
with evc.lock: |
758
|
1 |
|
evc.handle_link_up(event.content["link"]) |
759
|
|
|
|
760
|
|
|
# Possibly replace this with interruptions? |
761
|
1 |
|
@listen_to( |
762
|
|
|
'.*.switch.interface.(link_up|link_down|created|deleted)' |
763
|
|
|
) |
764
|
1 |
|
def on_interface_link_change(self, event: KytosEvent): |
765
|
|
|
""" |
766
|
|
|
Handler for interface link_up and link_down events. |
767
|
|
|
""" |
768
|
|
|
self.handle_on_interface_link_change(event) |
769
|
|
|
|
770
|
1 |
|
def handle_on_interface_link_change(self, event: KytosEvent): |
771
|
|
|
""" |
772
|
|
|
Handler to sort interface events {link_(up, down), create, deleted} |
773
|
|
|
|
774
|
|
|
To avoid multiple database updated (link flap): |
775
|
|
|
Every interface is identfied and processed in parallel. |
776
|
|
|
Once an interface event is received a time is started. |
777
|
|
|
While time is running self._intf_events will be updated. |
778
|
|
|
After time has passed last received event will be processed. |
779
|
|
|
""" |
780
|
1 |
|
iface = event.content.get("interface") |
781
|
1 |
|
with self._lock_interfaces[iface.id]: |
782
|
1 |
|
_now = event.timestamp |
783
|
|
|
# Return out of order events |
784
|
1 |
|
if ( |
785
|
|
|
iface.id in self._intf_events |
786
|
|
|
and self._intf_events[iface.id]["event"].timestamp > _now |
787
|
|
|
): |
788
|
1 |
|
return |
789
|
1 |
|
self._intf_events[iface.id].update({"event": event}) |
790
|
1 |
|
if "last_acquired" in self._intf_events[iface.id]: |
791
|
1 |
|
return |
792
|
1 |
|
self._intf_events[iface.id].update({"last_acquired": now()}) |
793
|
1 |
|
time.sleep(settings.UNI_STATE_CHANGE_DELAY) |
794
|
1 |
|
with self._lock_interfaces[iface.id]: |
795
|
1 |
|
event = self._intf_events[iface.id]["event"] |
796
|
1 |
|
self._intf_events[iface.id].pop('last_acquired', None) |
797
|
1 |
|
_, _, event_type = event.name.rpartition('.') |
798
|
1 |
|
if event_type in ('link_up', 'created'): |
799
|
1 |
|
self.handle_interface_link_up(iface) |
800
|
1 |
|
elif event_type in ('link_down', 'deleted'): |
801
|
1 |
|
self.handle_interface_link_down(iface) |
802
|
|
|
|
803
|
1 |
|
def handle_interface_link_up(self, interface): |
804
|
|
|
""" |
805
|
|
|
Handler for interface link_up events |
806
|
|
|
""" |
807
|
|
|
log.info("Event handle_interface_link_up %s", interface) |
808
|
|
|
for evc in self.get_evcs_by_svc_level(): |
809
|
|
|
if _does_uni_affect_evc(evc, interface, "up"): |
810
|
|
|
with evc.lock: |
811
|
|
|
evc.handle_interface_link_up( |
812
|
|
|
interface |
813
|
|
|
) |
814
|
|
|
|
815
|
1 |
|
def handle_interface_link_down(self, interface): |
816
|
|
|
""" |
817
|
|
|
Handler for interface link_down events |
818
|
|
|
""" |
819
|
|
|
log.info("Event handle_interface_link_down %s", interface) |
820
|
|
|
for evc in self.get_evcs_by_svc_level(): |
821
|
|
|
if _does_uni_affect_evc(evc, interface, "down"): |
822
|
|
|
with evc.lock: |
823
|
|
|
evc.handle_interface_link_down( |
824
|
|
|
interface |
825
|
|
|
) |
826
|
|
|
|
827
|
1 |
|
@listen_to("kytos/topology.link_down", pool="dynamic_single") |
828
|
1 |
|
def on_link_down(self, event): |
829
|
|
|
"""Change circuit when link is down or under_mantenance.""" |
830
|
|
|
self.handle_link_down(event) |
831
|
|
|
|
832
|
1 |
|
def prepare_swap_to_failover_flow(self, evc: EVC): |
833
|
|
|
"""Prepare an evc for switching to failover.""" |
834
|
|
|
install_flows = {} |
835
|
|
|
try: |
836
|
|
|
install_flows = evc.get_failover_flows() |
837
|
|
|
# pylint: disable=broad-except |
838
|
|
|
except Exception: |
839
|
|
|
err = traceback.format_exc() |
840
|
|
|
log.error( |
841
|
|
|
"Ignore Failover path for " |
842
|
|
|
f"{evc} due to error: {err}" |
843
|
|
|
) |
844
|
|
|
return install_flows |
845
|
|
|
|
846
|
1 |
|
def prepare_swap_to_failover_event(self, evc: EVC, install_flow): |
847
|
|
|
"""Prepare event contents for swap to failover.""" |
848
|
|
|
return map_evc_event_content( |
849
|
|
|
evc, |
850
|
|
|
flows=deepcopy(install_flow) |
851
|
|
|
) |
852
|
|
|
|
853
|
1 |
|
def execute_swap_to_failover( |
854
|
|
|
self, |
855
|
|
|
evcs: list[EVC] |
856
|
|
|
) -> tuple[list[EVC], list[EVC]]: |
857
|
|
|
"""Process changes needed to commit a swap to failover.""" |
858
|
1 |
|
event_contents = {} |
859
|
1 |
|
install_flows = {} |
860
|
1 |
|
swapped_evcs = list[EVC]() |
861
|
1 |
|
not_swapped_evcs = list[EVC]() |
862
|
|
|
|
863
|
1 |
|
for evc in evcs: |
864
|
1 |
|
install_flow = self.prepare_swap_to_failover_flow(evc) |
865
|
1 |
|
if install_flow: |
866
|
1 |
|
install_flows = merge_flow_dicts(install_flows, install_flow) |
867
|
1 |
|
event_contents[evc.id] =\ |
868
|
|
|
self.prepare_swap_to_failover_event(evc, install_flow) |
869
|
1 |
|
swapped_evcs.append(evc) |
870
|
|
|
else: |
871
|
1 |
|
not_swapped_evcs.append(evc) |
872
|
|
|
|
873
|
1 |
|
try: |
874
|
1 |
|
send_flow_mods_http( |
875
|
|
|
install_flows, |
876
|
|
|
"install" |
877
|
|
|
) |
878
|
1 |
|
for evc in swapped_evcs: |
879
|
1 |
|
temp_path = evc.current_path |
880
|
1 |
|
evc.current_path = evc.failover_path |
881
|
1 |
|
evc.failover_path = temp_path |
882
|
1 |
|
emit_event( |
883
|
|
|
self.controller, "failover_link_down", |
884
|
|
|
content=deepcopy(event_contents) |
885
|
|
|
) |
886
|
1 |
|
return swapped_evcs, not_swapped_evcs |
887
|
1 |
|
except FlowModException as exc: |
888
|
1 |
|
log.error(f"Fail to install failover flows for {evcs}: {exc}") |
889
|
1 |
|
return [], [*swapped_evcs, *not_swapped_evcs] |
890
|
|
|
|
891
|
1 |
|
def prepare_clear_failover_flow(self, evc: EVC): |
892
|
|
|
"""Prepare an evc for clearing the old path.""" |
893
|
|
|
del_flows = {} |
894
|
|
|
try: |
895
|
|
|
del_flows = prepare_delete_flow( |
896
|
|
|
merge_flow_dicts( |
897
|
|
|
evc._prepare_uni_flows(evc.failover_path, skip_in=True), |
898
|
|
|
evc._prepare_nni_flows(evc.failover_path) |
899
|
|
|
) |
900
|
|
|
) |
901
|
|
|
# pylint: disable=broad-except |
902
|
|
|
except Exception: |
903
|
|
|
err = traceback.format_exc() |
904
|
|
|
log.error(f"Fail to remove {evc} old_path: {err}") |
905
|
|
|
return del_flows |
906
|
|
|
|
907
|
1 |
|
def prepare_clear_failover_event(self, evc: EVC, delete_flow): |
908
|
|
|
"""Prepare event contents for clearing failover.""" |
909
|
|
|
return map_evc_event_content( |
910
|
|
|
evc, |
911
|
|
|
current_path=evc.current_path.as_dict(), |
912
|
|
|
removed_flows=deepcopy(delete_flow) |
913
|
|
|
) |
914
|
|
|
|
915
|
1 |
|
def execute_clear_failover( |
916
|
|
|
self, |
917
|
|
|
evcs: list[EVC] |
918
|
|
|
) -> tuple[list[EVC], list[EVC]]: |
919
|
|
|
"""Process changes needed to commit clearing the failover path""" |
920
|
1 |
|
event_contents = {} |
921
|
1 |
|
delete_flows = {} |
922
|
1 |
|
cleared_evcs = list[EVC]() |
923
|
1 |
|
not_cleared_evcs = list[EVC]() |
924
|
|
|
|
925
|
1 |
|
for evc in evcs: |
926
|
1 |
|
delete_flow = self.prepare_clear_failover_flow(evc) |
927
|
1 |
|
if delete_flow: |
928
|
1 |
|
delete_flows = merge_flow_dicts(delete_flows, delete_flow) |
929
|
1 |
|
event_contents[evc.id] =\ |
930
|
|
|
self.prepare_clear_failover_event(evc, delete_flow) |
931
|
1 |
|
cleared_evcs.append(evc) |
932
|
|
|
else: |
933
|
1 |
|
not_cleared_evcs.append(evc) |
934
|
|
|
|
935
|
1 |
|
try: |
936
|
1 |
|
send_flow_mods_http( |
937
|
|
|
delete_flows, |
938
|
|
|
'delete' |
939
|
|
|
) |
940
|
1 |
|
for evc in cleared_evcs: |
941
|
1 |
|
evc.failover_path.make_vlans_available(self.controller) |
942
|
1 |
|
evc.failover_path = Path([]) |
943
|
1 |
|
emit_event( |
944
|
|
|
self.controller, |
945
|
|
|
"failover_old_path", |
946
|
|
|
content=event_contents |
947
|
|
|
) |
948
|
1 |
|
return cleared_evcs, not_cleared_evcs |
949
|
1 |
|
except FlowModException as exc: |
950
|
1 |
|
log.error(f"Failed to delete failover flows for {evcs}: {exc}") |
951
|
1 |
|
return [], [*cleared_evcs, *not_cleared_evcs] |
952
|
|
|
|
953
|
1 |
|
def prepare_undeploy_flow(self, evc: EVC): |
954
|
|
|
"""Prepare an evc for undeploying.""" |
955
|
|
|
del_flows = {} |
956
|
|
|
try: |
957
|
|
|
del_flows = prepare_delete_flow( |
958
|
|
|
merge_flow_dicts( |
959
|
|
|
evc._prepare_uni_flows(evc.current_path, skip_in=True), |
960
|
|
|
evc._prepare_nni_flows(evc.current_path), |
961
|
|
|
evc._prepare_nni_flows(evc.failover_path) |
962
|
|
|
) |
963
|
|
|
) |
964
|
|
|
# pylint: disable=broad-except |
965
|
|
|
except Exception: |
966
|
|
|
err = traceback.format_exc() |
967
|
|
|
log.error(f"Fail to undeploy {evc}: {err}") |
968
|
|
|
return del_flows |
969
|
|
|
|
970
|
1 |
|
def execute_undeploy(self, evcs: list[EVC]): |
971
|
|
|
"""Process changes needed to commit an undeploy""" |
972
|
1 |
|
delete_flows = {} |
973
|
1 |
|
undeploy_evcs = list[EVC]() |
974
|
1 |
|
not_undeploy_evcs = list[EVC]() |
975
|
|
|
|
976
|
1 |
|
for evc in evcs: |
977
|
1 |
|
delete_flow = self.prepare_undeploy_flow(evc) |
978
|
1 |
|
if delete_flow: |
979
|
1 |
|
delete_flows = merge_flow_dicts(delete_flows, delete_flow) |
980
|
1 |
|
undeploy_evcs.append(evc) |
981
|
|
|
else: |
982
|
1 |
|
not_undeploy_evcs.append(evc) |
983
|
|
|
|
984
|
1 |
|
try: |
985
|
1 |
|
send_flow_mods_http( |
986
|
|
|
delete_flows, |
987
|
|
|
'delete' |
988
|
|
|
) |
989
|
|
|
|
990
|
1 |
|
for evc in undeploy_evcs: |
991
|
1 |
|
evc.current_path.make_vlans_available(self.controller) |
992
|
1 |
|
evc.failover_path.make_vlans_available(self.controller) |
993
|
1 |
|
evc.current_path = Path([]) |
994
|
1 |
|
evc.failover_path = Path([]) |
995
|
1 |
|
evc.deactivate() |
996
|
1 |
|
emit_event( |
997
|
|
|
self.controller, |
998
|
|
|
"need_redeploy", |
999
|
|
|
content={"evc_id": evc.id} |
1000
|
|
|
) |
1001
|
1 |
|
log.info(f"{evc} scheduled for redeploy") |
1002
|
1 |
|
return undeploy_evcs, not_undeploy_evcs |
1003
|
1 |
|
except FlowModException as exc: |
1004
|
1 |
|
log.error( |
1005
|
|
|
f"Failed to delete flows before redeploy for {evcs}: {exc}" |
1006
|
|
|
) |
1007
|
1 |
|
return [], [*undeploy_evcs, *not_undeploy_evcs] |
1008
|
|
|
|
1009
|
1 |
|
def handle_link_down(self, event): |
1010
|
|
|
"""Change circuit when link is down or under_mantenance.""" |
1011
|
1 |
|
link = event.content["link"] |
1012
|
1 |
|
log.info("Event handle_link_down %s", link) |
1013
|
|
|
|
1014
|
1 |
|
with ExitStack() as exit_stack: |
1015
|
1 |
|
exit_stack.enter_context(self.multi_evc_lock) |
1016
|
1 |
|
swap_to_failover = list[EVC]() |
1017
|
1 |
|
undeploy = list[EVC]() |
1018
|
1 |
|
clear_failover = list[EVC]() |
1019
|
1 |
|
evcs_to_update = dict[str, EVC]() |
1020
|
|
|
|
1021
|
1 |
|
for evc in self.get_evcs_by_svc_level(): |
1022
|
1 |
|
with ExitStack() as sub_stack: |
1023
|
1 |
|
sub_stack.enter_context(evc.lock) |
1024
|
1 |
|
if all(( |
1025
|
|
|
evc.is_affected_by_link(link), |
1026
|
|
|
evc.failover_path, |
1027
|
|
|
not evc.is_failover_path_affected_by_link(link) |
1028
|
|
|
)): |
1029
|
1 |
|
swap_to_failover.append(evc) |
1030
|
1 |
|
elif all(( |
1031
|
|
|
evc.is_affected_by_link(link), |
1032
|
|
|
not evc.failover_path or |
1033
|
|
|
evc.is_failover_path_affected_by_link(link) |
1034
|
|
|
)): |
1035
|
1 |
|
undeploy.append(evc) |
1036
|
1 |
|
elif all(( |
1037
|
|
|
not evc.is_affected_by_link(link), |
1038
|
|
|
evc.failover_path, |
1039
|
|
|
evc.is_failover_path_affected_by_link(link) |
1040
|
|
|
)): |
1041
|
1 |
|
clear_failover.append(evc) |
1042
|
|
|
else: |
1043
|
|
|
continue |
1044
|
|
|
|
1045
|
1 |
|
exit_stack.push(sub_stack.pop_all()) |
1046
|
|
|
|
1047
|
|
|
# Swap from current path to failover path |
1048
|
|
|
|
1049
|
1 |
|
if swap_to_failover: |
1050
|
1 |
|
success, failure = self.execute_swap_to_failover( |
1051
|
|
|
swap_to_failover |
1052
|
|
|
) |
1053
|
|
|
|
1054
|
1 |
|
clear_failover.extend(success) |
1055
|
|
|
|
1056
|
1 |
|
evcs_to_update.update((evc.id, evc) for evc in success) |
1057
|
|
|
|
1058
|
1 |
|
undeploy.extend(failure) |
1059
|
|
|
|
1060
|
|
|
# Clear out failover path |
1061
|
|
|
|
1062
|
1 |
|
if clear_failover: |
1063
|
1 |
|
success, failure = self.execute_clear_failover(clear_failover) |
1064
|
|
|
|
1065
|
1 |
|
evcs_to_update.update((evc.id, evc) for evc in success) |
1066
|
|
|
|
1067
|
1 |
|
undeploy.extend(failure) |
1068
|
|
|
|
1069
|
|
|
# Undeploy the evc, schedule a redeploy |
1070
|
|
|
|
1071
|
1 |
|
if undeploy: |
1072
|
1 |
|
success, failure = self.execute_undeploy(undeploy) |
1073
|
|
|
|
1074
|
1 |
|
evcs_to_update.update((evc.id, evc) for evc in success) |
1075
|
|
|
|
1076
|
1 |
|
if failure: |
1077
|
1 |
|
log.error(f"Failed to handle_link_down for {failure}") |
1078
|
|
|
|
1079
|
|
|
# Push update to DB |
1080
|
|
|
|
1081
|
1 |
|
if evcs_to_update: |
1082
|
1 |
|
self.mongo_controller.update_evcs( |
1083
|
|
|
[evc.as_dict() for evc in evcs_to_update.values()] |
1084
|
|
|
) |
1085
|
|
|
|
1086
|
1 |
|
@listen_to("kytos/mef_eline.need_redeploy") |
1087
|
1 |
|
def on_evc_need_redeploy(self, event): |
1088
|
|
|
"""Redeploy evcs that need to be redeployed.""" |
1089
|
|
|
self.handle_evc_need_redeploy(event) |
1090
|
|
|
|
1091
|
1 |
|
def handle_evc_need_redeploy(self, event): |
1092
|
|
|
"""Redeploy evcs that need to be redeployed.""" |
1093
|
|
|
evc = self.circuits.get(event.content["evc_id"]) |
1094
|
|
|
if evc is None: |
1095
|
|
|
return |
1096
|
|
|
with evc.lock: |
1097
|
|
|
if not evc.is_enabled() or evc.is_active(): |
1098
|
|
|
return |
1099
|
|
|
result = evc.deploy() |
1100
|
|
|
event_name = "error_redeploy_link_down" |
1101
|
|
|
if result: |
1102
|
|
|
log.info(f"{evc} redeployed") |
1103
|
|
|
event_name = "redeployed_link_down" |
1104
|
|
|
emit_event(self.controller, event_name, |
1105
|
|
|
content=map_evc_event_content(evc)) |
1106
|
|
|
|
1107
|
1 |
|
@listen_to("kytos/mef_eline.evc_affected_by_link_down") |
1108
|
1 |
|
def on_evc_affected_by_link_down(self, event): |
1109
|
|
|
"""Change circuit when link is down or under_mantenance.""" |
1110
|
|
|
self.handle_evc_affected_by_link_down(event) |
1111
|
|
|
|
1112
|
1 |
|
def handle_evc_affected_by_link_down(self, event): |
1113
|
|
|
"""Change circuit when link is down or under_mantenance.""" |
1114
|
1 |
|
evc = self.circuits.get(event.content["evc_id"]) |
1115
|
1 |
|
link = event.content['link'] |
1116
|
1 |
|
if not evc: |
1117
|
1 |
|
return |
1118
|
1 |
|
with evc.lock: |
1119
|
1 |
|
if not evc.is_affected_by_link(link): |
1120
|
|
|
return |
1121
|
1 |
|
result = evc.handle_link_down() |
1122
|
1 |
|
event_name = "error_redeploy_link_down" |
1123
|
1 |
|
if result: |
1124
|
1 |
|
log.info(f"{evc} redeployed due to link down {link.id}") |
1125
|
1 |
|
event_name = "redeployed_link_down" |
1126
|
1 |
|
emit_event(self.controller, event_name, |
1127
|
|
|
content=map_evc_event_content(evc)) |
1128
|
|
|
|
1129
|
1 |
|
@listen_to("kytos/mef_eline.(redeployed_link_(up|down)|deployed)") |
1130
|
1 |
|
def on_evc_deployed(self, event): |
1131
|
|
|
"""Handle EVC deployed|redeployed_link_down.""" |
1132
|
|
|
self.handle_evc_deployed(event) |
1133
|
|
|
|
1134
|
1 |
|
def handle_evc_deployed(self, event): |
1135
|
|
|
"""Setup failover path on evc deployed.""" |
1136
|
|
|
evc = self.circuits.get(event.content["evc_id"]) |
1137
|
|
|
if not evc: |
1138
|
|
|
return |
1139
|
|
|
evc.try_setup_failover_path() |
1140
|
|
|
|
1141
|
1 |
|
@listen_to("kytos/topology.topology_loaded") |
1142
|
1 |
|
def on_topology_loaded(self, event): # pylint: disable=unused-argument |
1143
|
|
|
"""Load EVCs once the topology is available.""" |
1144
|
|
|
self.load_all_evcs() |
1145
|
|
|
|
1146
|
1 |
|
def load_all_evcs(self): |
1147
|
|
|
"""Try to load all EVCs on startup.""" |
1148
|
1 |
|
circuits = self.mongo_controller.get_circuits()['circuits'].items() |
1149
|
1 |
|
for circuit_id, circuit in circuits: |
1150
|
1 |
|
if circuit_id not in self.circuits: |
1151
|
1 |
|
self._load_evc(circuit) |
1152
|
1 |
|
emit_event(self.controller, "evcs_loaded", content=dict(circuits), |
1153
|
|
|
timeout=1) |
1154
|
|
|
|
1155
|
1 |
|
def _load_evc(self, circuit_dict): |
1156
|
|
|
"""Load one EVC from mongodb to memory.""" |
1157
|
1 |
|
try: |
1158
|
1 |
|
evc = self._evc_from_dict(circuit_dict) |
1159
|
1 |
|
except (ValueError, KytosTagError) as exception: |
1160
|
1 |
|
log.error( |
1161
|
|
|
f"Could not load EVC: dict={circuit_dict} error={exception}" |
1162
|
|
|
) |
1163
|
1 |
|
return None |
1164
|
1 |
|
if evc.archived: |
1165
|
1 |
|
return None |
1166
|
|
|
|
1167
|
1 |
|
self.circuits.setdefault(evc.id, evc) |
1168
|
1 |
|
self.sched.add(evc) |
1169
|
1 |
|
return evc |
1170
|
|
|
|
1171
|
1 |
|
@listen_to("kytos/flow_manager.flow.error") |
1172
|
1 |
|
def on_flow_mod_error(self, event): |
1173
|
|
|
"""Handle flow mod errors related to an EVC.""" |
1174
|
|
|
self.handle_flow_mod_error(event) |
1175
|
|
|
|
1176
|
1 |
|
def handle_flow_mod_error(self, event): |
1177
|
|
|
"""Handle flow mod errors related to an EVC.""" |
1178
|
1 |
|
flow = event.content["flow"] |
1179
|
1 |
|
command = event.content.get("error_command") |
1180
|
1 |
|
if command != "add": |
1181
|
1 |
|
return |
1182
|
1 |
|
evc = self.circuits.get(EVC.get_id_from_cookie(flow.cookie)) |
1183
|
1 |
|
if not evc or evc.archived or not evc.is_enabled(): |
1184
|
1 |
|
return |
1185
|
1 |
|
with evc.lock: |
1186
|
1 |
|
evc.remove_current_flows(sync=False) |
1187
|
1 |
|
evc.remove_failover_flows(sync=True) |
1188
|
|
|
|
1189
|
1 |
|
def _evc_dict_with_instances(self, evc_dict): |
1190
|
|
|
"""Convert some dict values to instance of EVC classes. |
1191
|
|
|
|
1192
|
|
|
This method will convert: [UNI, Link] |
1193
|
|
|
""" |
1194
|
1 |
|
data = evc_dict.copy() # Do not modify the original dict |
1195
|
1 |
|
for attribute, value in data.items(): |
1196
|
|
|
# Get multiple attributes. |
1197
|
|
|
# Ex: uni_a, uni_z |
1198
|
1 |
|
if "uni" in attribute: |
1199
|
1 |
|
try: |
1200
|
1 |
|
data[attribute] = self._uni_from_dict(value) |
1201
|
1 |
|
except ValueError as exception: |
1202
|
1 |
|
result = "Error creating UNI: Invalid value" |
1203
|
1 |
|
raise ValueError(result) from exception |
1204
|
|
|
|
1205
|
1 |
|
if attribute == "circuit_scheduler": |
1206
|
1 |
|
data[attribute] = [] |
1207
|
1 |
|
for schedule in value: |
1208
|
1 |
|
data[attribute].append(CircuitSchedule.from_dict(schedule)) |
1209
|
|
|
|
1210
|
|
|
# Get multiple attributes. |
1211
|
|
|
# Ex: primary_links, |
1212
|
|
|
# backup_links, |
1213
|
|
|
# current_links_cache, |
1214
|
|
|
# primary_links_cache, |
1215
|
|
|
# backup_links_cache |
1216
|
1 |
|
if "links" in attribute: |
1217
|
1 |
|
data[attribute] = [ |
1218
|
|
|
self._link_from_dict(link, attribute) for link in value |
1219
|
|
|
] |
1220
|
|
|
|
1221
|
|
|
# Ex: current_path, |
1222
|
|
|
# primary_path, |
1223
|
|
|
# backup_path |
1224
|
1 |
|
if (attribute.endswith("path") and |
1225
|
|
|
attribute != "dynamic_backup_path"): |
1226
|
1 |
|
data[attribute] = Path( |
1227
|
|
|
[self._link_from_dict(link, attribute) for link in value] |
1228
|
|
|
) |
1229
|
|
|
|
1230
|
1 |
|
return data |
1231
|
|
|
|
1232
|
1 |
|
def _evc_from_dict(self, evc_dict): |
1233
|
1 |
|
data = self._evc_dict_with_instances(evc_dict) |
1234
|
1 |
|
data["table_group"] = self.table_group |
1235
|
1 |
|
return EVC(self.controller, **data) |
1236
|
|
|
|
1237
|
1 |
|
def _uni_from_dict(self, uni_dict): |
1238
|
|
|
"""Return a UNI object from python dict.""" |
1239
|
1 |
|
if uni_dict is None: |
1240
|
1 |
|
return False |
1241
|
|
|
|
1242
|
1 |
|
interface_id = uni_dict.get("interface_id") |
1243
|
1 |
|
interface = self.controller.get_interface_by_id(interface_id) |
1244
|
1 |
|
if interface is None: |
1245
|
1 |
|
result = ( |
1246
|
|
|
"Error creating UNI:" |
1247
|
|
|
+ f"Could not instantiate interface {interface_id}" |
1248
|
|
|
) |
1249
|
1 |
|
raise ValueError(result) from ValueError |
1250
|
1 |
|
tag_convert = {1: "vlan"} |
1251
|
1 |
|
tag_dict = uni_dict.get("tag", None) |
1252
|
1 |
|
if tag_dict: |
1253
|
1 |
|
tag_type = tag_dict.get("tag_type") |
1254
|
1 |
|
tag_type = tag_convert.get(tag_type, tag_type) |
1255
|
1 |
|
tag_value = tag_dict.get("value") |
1256
|
1 |
|
if isinstance(tag_value, list): |
1257
|
1 |
|
tag_value = get_tag_ranges(tag_value) |
1258
|
1 |
|
mask_list = get_vlan_tags_and_masks(tag_value) |
1259
|
1 |
|
tag = TAGRange(tag_type, tag_value, mask_list) |
1260
|
|
|
else: |
1261
|
1 |
|
tag = TAG(tag_type, tag_value) |
1262
|
|
|
else: |
1263
|
1 |
|
tag = None |
1264
|
1 |
|
uni = UNI(interface, tag) |
1265
|
1 |
|
return uni |
1266
|
|
|
|
1267
|
1 |
|
def _link_from_dict(self, link_dict: dict, attribute: str) -> Link: |
1268
|
|
|
"""Return a Link object from python dict.""" |
1269
|
1 |
|
id_a = link_dict.get("endpoint_a").get("id") |
1270
|
1 |
|
id_b = link_dict.get("endpoint_b").get("id") |
1271
|
|
|
|
1272
|
1 |
|
endpoint_a = self.controller.get_interface_by_id(id_a) |
1273
|
1 |
|
endpoint_b = self.controller.get_interface_by_id(id_b) |
1274
|
1 |
|
if not endpoint_a: |
1275
|
1 |
|
error_msg = f"Could not get interface endpoint_a id {id_a}" |
1276
|
1 |
|
raise ValueError(error_msg) |
1277
|
1 |
|
if not endpoint_b: |
1278
|
|
|
error_msg = f"Could not get interface endpoint_b id {id_b}" |
1279
|
|
|
raise ValueError(error_msg) |
1280
|
|
|
|
1281
|
1 |
|
link = Link(endpoint_a, endpoint_b) |
1282
|
1 |
|
allowed_paths = {"current_path", "failover_path"} |
1283
|
1 |
|
if "metadata" in link_dict and attribute in allowed_paths: |
1284
|
1 |
|
link.extend_metadata(link_dict.get("metadata")) |
1285
|
|
|
|
1286
|
1 |
|
s_vlan = link.get_metadata("s_vlan") |
1287
|
1 |
|
if s_vlan: |
1288
|
1 |
|
tag = TAG.from_dict(s_vlan) |
1289
|
1 |
|
if tag is False: |
1290
|
|
|
error_msg = f"Could not instantiate tag from dict {s_vlan}" |
1291
|
|
|
raise ValueError(error_msg) |
1292
|
1 |
|
link.update_metadata("s_vlan", tag) |
1293
|
1 |
|
return link |
1294
|
|
|
|
1295
|
1 |
|
def _find_evc_by_schedule_id(self, schedule_id): |
1296
|
|
|
""" |
1297
|
|
|
Find an EVC and CircuitSchedule based on schedule_id. |
1298
|
|
|
|
1299
|
|
|
:param schedule_id: Schedule ID |
1300
|
|
|
:return: EVC and Schedule |
1301
|
|
|
""" |
1302
|
1 |
|
circuits = self._get_circuits_buffer() |
1303
|
1 |
|
found_schedule = None |
1304
|
1 |
|
evc = None |
1305
|
|
|
|
1306
|
|
|
# pylint: disable=unused-variable |
1307
|
1 |
|
for c_id, circuit in circuits.items(): |
1308
|
1 |
|
for schedule in circuit.circuit_scheduler: |
1309
|
1 |
|
if schedule.id == schedule_id: |
1310
|
1 |
|
found_schedule = schedule |
1311
|
1 |
|
evc = circuit |
1312
|
1 |
|
break |
1313
|
1 |
|
if found_schedule: |
1314
|
1 |
|
break |
1315
|
1 |
|
return evc, found_schedule |
1316
|
|
|
|
1317
|
1 |
|
def _get_circuits_buffer(self): |
1318
|
|
|
""" |
1319
|
|
|
Return the circuit buffer. |
1320
|
|
|
|
1321
|
|
|
If the buffer is empty, try to load data from mongodb. |
1322
|
|
|
""" |
1323
|
1 |
|
if not self.circuits: |
1324
|
|
|
# Load circuits from mongodb to buffer |
1325
|
1 |
|
circuits = self.mongo_controller.get_circuits()['circuits'] |
1326
|
1 |
|
for c_id, circuit in circuits.items(): |
1327
|
1 |
|
evc = self._evc_from_dict(circuit) |
1328
|
1 |
|
self.circuits[c_id] = evc |
1329
|
1 |
|
return self.circuits |
1330
|
|
|
|
1331
|
|
|
# pylint: disable=attribute-defined-outside-init |
1332
|
1 |
|
@alisten_to("kytos/of_multi_table.enable_table") |
1333
|
1 |
|
async def on_table_enabled(self, event): |
1334
|
|
|
"""Handle a recently table enabled.""" |
1335
|
1 |
|
table_group = event.content.get("mef_eline", None) |
1336
|
1 |
|
if not table_group: |
1337
|
1 |
|
return |
1338
|
1 |
|
for group in table_group: |
1339
|
1 |
|
if group not in settings.TABLE_GROUP_ALLOWED: |
1340
|
1 |
|
log.error(f'The table group "{group}" is not allowed for ' |
1341
|
|
|
f'mef_eline. Allowed table groups are ' |
1342
|
|
|
f'{settings.TABLE_GROUP_ALLOWED}') |
1343
|
1 |
|
return |
1344
|
1 |
|
self.table_group.update(table_group) |
1345
|
1 |
|
content = {"group_table": self.table_group} |
1346
|
1 |
|
name = "kytos/mef_eline.enable_table" |
1347
|
|
|
await aemit_event(self.controller, name, content) |
1348
|
|
|
|