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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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check_disabled_component, emit_event, |
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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: EVC): |
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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.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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with ExitStack() as exit_stack: |
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1 |
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check_if_inactive_is_deployed = set[str]() |
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check_if_active_is_working = set[str]() |
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circuits_to_check = list[EVC]() |
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undeploy = list[EVC]() |
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evcs_to_update = dict[str, EVC]() |
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for circuit in self.get_evcs_by_svc_level(enable_filter=False): |
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with ExitStack() as sub_stack: |
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if not circuit.lock.acquire(blocking=False): |
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continue |
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sub_stack.push(circuit.lock) |
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circuit.try_setup_failover_path(warn_if_not_path=False) |
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if all(( |
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circuit.is_enabled(), |
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not circuit.is_active(), |
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not circuit.has_recent_removed_flow(), |
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not circuit.is_recent_updated(), |
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circuit.are_unis_active(), |
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circuit.is_intra_switch() or circuit.current_path, |
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)): |
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check_if_inactive_is_deployed.add(circuit.id) |
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elif all(( |
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circuit.is_enabled(), |
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circuit.is_active(), |
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not circuit.has_recent_removed_flow(), |
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not circuit.is_recent_updated(), |
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1 |
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circuit.are_unis_active(), |
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)): |
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check_if_active_is_working.add(circuit.id) |
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else: |
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continue |
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circuits_to_check.append(circuit) |
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exit_stack.push(sub_stack.pop_all()) |
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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 not is_checked: |
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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( |
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f"{circuit} deployed but trace failed - redeploy" |
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) |
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undeploy.append(circuit) |
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continue |
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circuit.execution_rounds = 0 |
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log.debug(f"{circuit} trace passed!") |
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if circuit.id in check_if_inactive_is_deployed: |
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log.info( |
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f"{circuit} deployed but inactive - activating" |
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) |
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circuit.activate() |
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evcs_to_update[circuit.id] = circuit |
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# if circuit.id in check_if_active_is_working: |
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# pass |
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# NOTE: Perhaps use a swap failover instead? |
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if undeploy: |
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success, failure = self.execute_undeploy(undeploy) |
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1 |
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1 |
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for evc in success: |
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evc.execution_rounds = 0 |
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1 |
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evcs_to_update.update((evc.id, evc) for evc in success) |
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if failure: |
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log.error( |
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f"Failed to redeploy on failed trace for {failure}" |
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) |
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1 |
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1 |
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if evcs_to_update: |
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evc_dicts = list[dict]() |
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update_time = now() |
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for evc in evcs_to_update.values(): |
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evc.updated_at = update_time |
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1 |
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evc_dicts.append(evc.as_dict()) |
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1 |
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self.mongo_controller.update_evcs( |
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210
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evc_dicts |
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211
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1 |
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) |
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212
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1 |
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213
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1 |
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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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218
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219
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@rest("/v2/evc/", methods=["GET"]) |
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1 |
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def list_circuits(self, request: Request) -> JSONResponse: |
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1 |
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"""Endpoint to return circuits stored. |
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222
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1 |
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223
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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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226
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log.debug("list_circuits /v2/evc") |
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args = request.query_params |
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228
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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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235
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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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238
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239
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Return a JSON with the following template: |
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240
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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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244
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log.debug("list_schedules /v2/evc/schedule") |
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245
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circuits = self.mongo_controller.get_circuits()['circuits'].values() |
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246
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if not circuits: |
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247
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result = {} |
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248
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status = 200 |
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249
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return JSONResponse(result, status_code=status) |
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1 |
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251
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1 |
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result = [] |
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252
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status = 200 |
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253
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1 |
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for circuit in circuits: |
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254
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1 |
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circuit_scheduler = circuit.get("circuit_scheduler") |
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255
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1 |
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if circuit_scheduler: |
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256
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1 |
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for scheduler in circuit_scheduler: |
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257
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1 |
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value = { |
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258
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1 |
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"schedule_id": scheduler.get("id"), |
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259
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1 |
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"circuit_id": circuit.get("id"), |
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260
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"schedule": scheduler, |
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261
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} |
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262
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result.append(value) |
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263
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264
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1 |
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log.debug("list_schedules result %s %s", result, status) |
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265
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1 |
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return JSONResponse(result, status_code=status) |
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266
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1 |
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|
267
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|
|
@rest("/v2/evc/{circuit_id}", methods=["GET"]) |
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268
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def get_circuit(self, request: Request) -> JSONResponse: |
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269
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"""Endpoint to return a circuit based on id.""" |
|
270
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|
|
circuit_id = request.path_params["circuit_id"] |
|
271
|
1 |
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log.debug("get_circuit /v2/evc/%s", circuit_id) |
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272
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1 |
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circuit = self.mongo_controller.get_circuit(circuit_id) |
|
273
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if not circuit: |
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274
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result = f"circuit_id {circuit_id} not found" |
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275
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log.debug("get_circuit result %s %s", result, 404) |
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276
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1 |
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raise HTTPException(404, detail=result) |
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277
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1 |
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status = 200 |
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278
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1 |
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log.debug("get_circuit result %s %s", circuit, status) |
|
279
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return JSONResponse(circuit, status_code=status) |
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280
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281
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|
|
# pylint: disable=too-many-branches, too-many-statements |
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282
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@rest("/v2/evc/", methods=["POST"]) |
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283
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1 |
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@validate_openapi(spec) |
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284
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1 |
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def create_circuit(self, request: Request) -> JSONResponse: |
|
285
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|
"""Try to create a new circuit. |
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286
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|
|
|
287
|
|
|
Firstly, for EVPL: E-Line NApp verifies if UNI_A's requested C-VID and |
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288
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|
UNI_Z's requested C-VID are available from the interfaces' pools. This |
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289
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1 |
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is checked when creating the UNI object. |
|
290
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1 |
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291
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1 |
|
Then, E-Line NApp requests a primary and a backup path to the |
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292
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|
|
Pathfinder NApp using the attributes primary_links and backup_links |
|
293
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1 |
|
submitted via REST |
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294
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1 |
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|
295
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1 |
|
# For each link composing paths in #3: |
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296
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1 |
|
# - E-Line NApp requests a S-VID available from the link VLAN pool. |
|
297
|
|
|
# - Using the S-VID obtained, generate abstract flow entries to be |
|
298
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1 |
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# sent to FlowManager |
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299
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1 |
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|
300
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|
Push abstract flow entries to FlowManager and FlowManager pushes |
|
301
|
|
|
OpenFlow entries to datapaths |
|
302
|
|
|
|
|
303
|
|
|
E-Line NApp generates an event to notify all Kytos NApps of a new EVC |
|
304
|
1 |
|
creation |
|
305
|
1 |
|
|
|
306
|
1 |
|
Finnaly, notify user of the status of its request. |
|
307
|
1 |
|
""" |
|
308
|
|
|
# Try to create the circuit object |
|
309
|
|
|
log.debug("create_circuit /v2/evc/") |
|
310
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
|
311
|
1 |
|
|
|
312
|
|
|
try: |
|
313
|
|
|
evc = self._evc_from_dict(data) |
|
314
|
|
|
except (ValueError, KytosTagError) as exception: |
|
315
|
|
|
log.debug("create_circuit result %s %s", exception, 400) |
|
316
|
1 |
|
raise HTTPException(400, detail=str(exception)) from exception |
|
317
|
|
|
try: |
|
318
|
|
|
check_disabled_component(evc.uni_a, evc.uni_z) |
|
319
|
1 |
|
except DisabledSwitch as exception: |
|
320
|
|
|
log.debug("create_circuit result %s %s", exception, 409) |
|
321
|
|
|
raise HTTPException( |
|
322
|
1 |
|
409, |
|
323
|
1 |
|
detail=f"Path is not valid: {exception}" |
|
324
|
1 |
|
) from exception |
|
325
|
1 |
|
|
|
326
|
|
|
if evc.primary_path: |
|
327
|
|
|
try: |
|
328
|
1 |
|
evc.primary_path.is_valid( |
|
329
|
1 |
|
evc.uni_a.interface.switch, |
|
330
|
1 |
|
evc.uni_z.interface.switch, |
|
331
|
1 |
|
bool(evc.circuit_scheduler), |
|
332
|
|
|
) |
|
333
|
1 |
|
except InvalidPath as exception: |
|
334
|
|
|
raise HTTPException( |
|
335
|
1 |
|
400, |
|
336
|
1 |
|
detail=f"primary_path is not valid: {exception}" |
|
337
|
1 |
|
) from exception |
|
338
|
1 |
|
if evc.backup_path: |
|
339
|
1 |
|
try: |
|
340
|
1 |
|
evc.backup_path.is_valid( |
|
341
|
1 |
|
evc.uni_a.interface.switch, |
|
342
|
1 |
|
evc.uni_z.interface.switch, |
|
343
|
1 |
|
bool(evc.circuit_scheduler), |
|
344
|
1 |
|
) |
|
345
|
|
|
except InvalidPath as exception: |
|
346
|
1 |
|
raise HTTPException( |
|
347
|
1 |
|
400, |
|
348
|
|
|
detail=f"backup_path is not valid: {exception}" |
|
349
|
|
|
) from exception |
|
350
|
|
|
|
|
351
|
1 |
|
if not evc._tag_lists_equal(): |
|
352
|
|
|
detail = "UNI_A and UNI_Z tag lists should be the same." |
|
353
|
1 |
|
raise HTTPException(400, detail=detail) |
|
354
|
1 |
|
|
|
355
|
1 |
|
try: |
|
356
|
1 |
|
evc._validate_has_primary_or_dynamic() |
|
357
|
1 |
|
except ValueError as exception: |
|
358
|
|
|
raise HTTPException(400, detail=str(exception)) from exception |
|
359
|
1 |
|
|
|
360
|
1 |
|
try: |
|
361
|
1 |
|
self._check_no_tag_duplication(evc.id, evc.uni_a, evc.uni_z) |
|
362
|
|
|
except DuplicatedNoTagUNI as exception: |
|
363
|
|
|
log.debug("create_circuit result %s %s", exception, 409) |
|
364
|
|
|
raise HTTPException(409, detail=str(exception)) from exception |
|
365
|
|
|
|
|
366
|
|
|
try: |
|
367
|
1 |
|
self._use_uni_tags(evc) |
|
368
|
1 |
|
except KytosTagError as exception: |
|
369
|
1 |
|
raise HTTPException(400, detail=str(exception)) from exception |
|
370
|
1 |
|
|
|
371
|
1 |
|
# save circuit |
|
372
|
1 |
|
try: |
|
373
|
1 |
|
evc.sync() |
|
374
|
1 |
|
except ValidationError as exception: |
|
375
|
1 |
|
raise HTTPException(400, detail=str(exception)) from exception |
|
376
|
|
|
|
|
377
|
1 |
|
# store circuit in dictionary |
|
378
|
1 |
|
self.circuits[evc.id] = evc |
|
379
|
1 |
|
|
|
380
|
|
|
# Schedule the circuit deploy |
|
381
|
|
|
self.sched.add(evc) |
|
382
|
|
|
|
|
383
|
1 |
|
# Circuit has no schedule, deploy now |
|
384
|
1 |
|
deployed = False |
|
385
|
1 |
|
if not evc.circuit_scheduler: |
|
386
|
1 |
|
with evc.lock: |
|
387
|
1 |
|
deployed = evc.deploy() |
|
388
|
|
|
|
|
389
|
|
|
# Notify users |
|
390
|
1 |
|
result = {"circuit_id": evc.id, "deployed": deployed} |
|
391
|
1 |
|
status = 201 |
|
392
|
1 |
|
log.debug("create_circuit result %s %s", result, status) |
|
393
|
|
|
emit_event(self.controller, name="created", |
|
394
|
|
|
content=map_evc_event_content(evc)) |
|
395
|
|
|
return JSONResponse(result, status_code=status) |
|
396
|
1 |
|
|
|
397
|
1 |
|
@staticmethod |
|
398
|
|
|
def _use_uni_tags(evc): |
|
399
|
|
|
uni_a = evc.uni_a |
|
400
|
|
|
evc._use_uni_vlan(uni_a) |
|
401
|
|
|
try: |
|
402
|
|
|
uni_z = evc.uni_z |
|
403
|
|
|
evc._use_uni_vlan(uni_z) |
|
404
|
|
|
except KytosTagError as err: |
|
405
|
|
|
evc.make_uni_vlan_available(uni_a) |
|
406
|
1 |
|
raise err |
|
407
|
1 |
|
|
|
408
|
1 |
|
@listen_to('kytos/flow_manager.flow.removed') |
|
409
|
1 |
|
def on_flow_delete(self, event): |
|
410
|
1 |
|
"""Capture delete messages to keep track when flows got removed.""" |
|
411
|
1 |
|
self.handle_flow_delete(event) |
|
412
|
1 |
|
|
|
413
|
1 |
|
def handle_flow_delete(self, event): |
|
414
|
1 |
|
"""Keep track when the EVC got flows removed by deriving its cookie.""" |
|
415
|
|
|
flow = event.content["flow"] |
|
416
|
1 |
|
evc = self.circuits.get(EVC.get_id_from_cookie(flow.cookie)) |
|
417
|
1 |
|
if evc: |
|
418
|
|
|
log.debug("Flow removed in EVC %s", evc.id) |
|
419
|
1 |
|
evc.set_flow_removed_at() |
|
420
|
|
|
|
|
421
|
1 |
|
@rest("/v2/evc/{circuit_id}", methods=["PATCH"]) |
|
422
|
1 |
|
@validate_openapi(spec) |
|
423
|
|
|
def update(self, request: Request) -> JSONResponse: |
|
424
|
|
|
"""Update a circuit based on payload. |
|
425
|
|
|
|
|
426
|
|
|
The EVC attributes (creation_time, active, current_path, |
|
427
|
|
|
failover_path, _id, archived) can't be updated. |
|
428
|
1 |
|
""" |
|
429
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
|
430
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
|
431
|
1 |
|
log.debug("update /v2/evc/%s", circuit_id) |
|
432
|
1 |
|
try: |
|
433
|
1 |
|
evc = self.circuits[circuit_id] |
|
434
|
1 |
|
except KeyError: |
|
435
|
1 |
|
result = f"circuit_id {circuit_id} not found" |
|
436
|
1 |
|
log.debug("update result %s %s", result, 404) |
|
437
|
|
|
raise HTTPException(404, detail=result) from KeyError |
|
438
|
1 |
|
|
|
439
|
1 |
|
with evc.lock: |
|
440
|
1 |
|
try: |
|
441
|
1 |
|
updated_data = self._evc_dict_with_instances(data) |
|
442
|
1 |
|
self._check_no_tag_duplication( |
|
443
|
1 |
|
circuit_id, updated_data.get("uni_a"), |
|
444
|
1 |
|
updated_data.get("uni_z") |
|
445
|
1 |
|
) |
|
446
|
1 |
|
enable, redeploy = evc.update(**updated_data) |
|
447
|
1 |
|
except (ValueError, KytosTagError, ValidationError) as exception: |
|
448
|
1 |
|
log.debug("update result %s %s", exception, 400) |
|
449
|
|
|
raise HTTPException(400, detail=str(exception)) from exception |
|
450
|
|
|
except DuplicatedNoTagUNI as exception: |
|
451
|
|
|
log.debug("update result %s %s", exception, 409) |
|
452
|
|
|
raise HTTPException(409, detail=str(exception)) from exception |
|
453
|
1 |
|
except DisabledSwitch as exception: |
|
454
|
1 |
|
log.debug("update result %s %s", exception, 409) |
|
455
|
1 |
|
raise HTTPException( |
|
456
|
1 |
|
409, |
|
457
|
|
|
detail=f"Path is not valid: {exception}" |
|
458
|
1 |
|
) from exception |
|
459
|
|
|
|
|
460
|
1 |
|
redeployed = False |
|
461
|
1 |
|
|
|
462
|
|
|
if evc.is_active(): |
|
463
|
1 |
|
if enable is False: # disable if active |
|
464
|
1 |
|
evc.remove() |
|
465
|
1 |
|
elif redeploy is not None: # redeploy if active |
|
466
|
|
|
evc.remove() |
|
467
|
|
|
redeployed = evc.deploy() |
|
468
|
|
|
else: |
|
469
|
|
|
if enable is True: # enable if inactive |
|
470
|
|
|
redeployed = evc.deploy() |
|
471
|
|
|
elif evc.is_enabled() and redeploy: |
|
472
|
|
|
evc.remove() |
|
473
|
|
|
redeployed = evc.deploy() |
|
474
|
1 |
|
|
|
475
|
1 |
|
result = {evc.id: evc.as_dict(), 'redeployed': redeployed} |
|
476
|
1 |
|
status = 200 |
|
477
|
|
|
|
|
478
|
1 |
|
log.debug("update result %s %s", result, status) |
|
479
|
1 |
|
emit_event( |
|
480
|
|
|
self.controller, |
|
481
|
1 |
|
"updated", |
|
482
|
|
|
content=map_evc_event_content(evc, **data) |
|
483
|
1 |
|
) |
|
484
|
1 |
|
return JSONResponse(result, status_code=status) |
|
485
|
1 |
|
|
|
486
|
1 |
|
@rest("/v2/evc/{circuit_id}", methods=["DELETE"]) |
|
487
|
1 |
|
def delete_circuit(self, request: Request) -> JSONResponse: |
|
488
|
1 |
|
"""Remove a circuit. |
|
489
|
1 |
|
|
|
490
|
|
|
First, the flows are removed from the switches, and then the EVC is |
|
491
|
1 |
|
disabled. |
|
492
|
1 |
|
""" |
|
493
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
|
494
|
|
|
log.debug("delete_circuit /v2/evc/%s", circuit_id) |
|
495
|
1 |
|
try: |
|
496
|
1 |
|
evc = self.circuits.pop(circuit_id) |
|
497
|
1 |
|
except KeyError: |
|
498
|
|
|
result = f"circuit_id {circuit_id} not found" |
|
499
|
1 |
|
log.debug("delete_circuit result %s %s", result, 404) |
|
500
|
1 |
|
raise HTTPException(404, detail=result) from KeyError |
|
501
|
1 |
|
log.info("Removing %s", evc) |
|
502
|
|
|
|
|
503
|
1 |
|
with evc.lock: |
|
504
|
1 |
|
if not evc.archived: |
|
505
|
1 |
|
evc.deactivate() |
|
506
|
1 |
|
evc.disable() |
|
507
|
|
|
self.sched.remove(evc) |
|
508
|
|
|
evc.remove_current_flows(sync=False) |
|
509
|
|
|
evc.remove_failover_flows(sync=False) |
|
510
|
|
|
evc.archive() |
|
511
|
1 |
|
evc.remove_uni_tags() |
|
512
|
1 |
|
evc.sync() |
|
513
|
1 |
|
emit_event( |
|
514
|
|
|
self.controller, "deleted", |
|
515
|
1 |
|
content=map_evc_event_content(evc) |
|
516
|
1 |
|
) |
|
517
|
1 |
|
|
|
518
|
|
|
log.info("EVC removed. %s", evc) |
|
519
|
1 |
|
result = {"response": f"Circuit {circuit_id} removed"} |
|
520
|
1 |
|
status = 200 |
|
521
|
1 |
|
log.debug("delete_circuit result %s %s", result, status) |
|
522
|
1 |
|
|
|
523
|
|
|
return JSONResponse(result, status_code=status) |
|
524
|
|
|
|
|
525
|
|
|
@rest("/v2/evc/{circuit_id}/metadata", methods=["GET"]) |
|
526
|
1 |
|
def get_metadata(self, request: Request) -> JSONResponse: |
|
527
|
1 |
|
"""Get metadata from an EVC.""" |
|
528
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
|
529
|
1 |
|
try: |
|
530
|
1 |
|
return ( |
|
531
|
1 |
|
JSONResponse({"metadata": self.circuits[circuit_id].metadata}) |
|
532
|
1 |
|
) |
|
533
|
|
|
except KeyError as error: |
|
534
|
1 |
|
raise HTTPException( |
|
535
|
1 |
|
404, |
|
536
|
1 |
|
detail=f"circuit_id {circuit_id} not found." |
|
537
|
|
|
) from error |
|
538
|
1 |
|
|
|
539
|
1 |
View Code Duplication |
@rest("/v2/evc/metadata", methods=["POST"]) |
|
|
|
|
|
|
540
|
|
|
@validate_openapi(spec) |
|
541
|
1 |
|
def bulk_add_metadata(self, request: Request) -> JSONResponse: |
|
542
|
1 |
|
"""Add metadata to a bulk of EVCs.""" |
|
543
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
|
544
|
1 |
|
circuit_ids = data.pop("circuit_ids") |
|
545
|
1 |
|
|
|
546
|
1 |
|
self.mongo_controller.update_evcs_metadata(circuit_ids, data, "add") |
|
547
|
|
|
|
|
548
|
|
|
fail_evcs = [] |
|
549
|
|
|
for _id in circuit_ids: |
|
550
|
|
|
try: |
|
551
|
1 |
|
evc = self.circuits[_id] |
|
552
|
1 |
|
evc.extend_metadata(data) |
|
553
|
1 |
|
except KeyError: |
|
554
|
|
|
fail_evcs.append(_id) |
|
555
|
1 |
|
|
|
556
|
1 |
|
if fail_evcs: |
|
557
|
|
|
raise HTTPException(404, detail=fail_evcs) |
|
558
|
1 |
|
return JSONResponse("Operation successful", status_code=201) |
|
559
|
1 |
|
|
|
560
|
|
|
@rest("/v2/evc/{circuit_id}/metadata", methods=["POST"]) |
|
561
|
|
|
@validate_openapi(spec) |
|
562
|
1 |
|
def add_metadata(self, request: Request) -> JSONResponse: |
|
563
|
1 |
|
"""Add metadata to an EVC.""" |
|
564
|
|
|
circuit_id = request.path_params["circuit_id"] |
|
565
|
|
|
metadata = get_json_or_400(request, self.controller.loop) |
|
566
|
1 |
|
if not isinstance(metadata, dict): |
|
567
|
1 |
|
raise HTTPException(400, f"Invalid metadata value: {metadata}") |
|
568
|
1 |
|
try: |
|
569
|
1 |
|
evc = self.circuits[circuit_id] |
|
570
|
1 |
|
except KeyError as error: |
|
571
|
|
|
raise HTTPException( |
|
572
|
|
|
404, |
|
573
|
|
|
detail=f"circuit_id {circuit_id} not found." |
|
574
|
1 |
|
) from error |
|
575
|
1 |
|
|
|
576
|
1 |
|
with evc.lock: |
|
577
|
1 |
|
evc.extend_metadata(metadata) |
|
578
|
|
|
evc.sync() |
|
579
|
|
|
return JSONResponse("Operation successful", status_code=201) |
|
580
|
|
|
|
|
581
|
1 |
View Code Duplication |
@rest("/v2/evc/metadata/{key}", methods=["DELETE"]) |
|
|
|
|
|
|
582
|
1 |
|
@validate_openapi(spec) |
|
583
|
1 |
|
def bulk_delete_metadata(self, request: Request) -> JSONResponse: |
|
584
|
1 |
|
"""Delete metada from a bulk of EVCs""" |
|
585
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
|
586
|
|
|
key = request.path_params["key"] |
|
587
|
1 |
|
circuit_ids = data.pop("circuit_ids") |
|
588
|
|
|
self.mongo_controller.update_evcs_metadata( |
|
589
|
|
|
circuit_ids, {key: ""}, "del" |
|
590
|
1 |
|
) |
|
591
|
|
|
|
|
592
|
1 |
|
fail_evcs = [] |
|
593
|
|
|
for _id in circuit_ids: |
|
594
|
1 |
|
try: |
|
595
|
1 |
|
evc = self.circuits[_id] |
|
596
|
1 |
|
evc.remove_metadata(key) |
|
597
|
|
|
except KeyError: |
|
598
|
|
|
fail_evcs.append(_id) |
|
599
|
|
|
|
|
600
|
|
|
if fail_evcs: |
|
601
|
|
|
raise HTTPException(404, detail=fail_evcs) |
|
602
|
|
|
return JSONResponse("Operation successful") |
|
603
|
|
|
|
|
604
|
|
|
@rest("/v2/evc/{circuit_id}/metadata/{key}", methods=["DELETE"]) |
|
605
|
|
|
def delete_metadata(self, request: Request) -> JSONResponse: |
|
606
|
|
|
"""Delete metadata from an EVC.""" |
|
607
|
|
|
circuit_id = request.path_params["circuit_id"] |
|
608
|
|
|
key = request.path_params["key"] |
|
609
|
|
|
try: |
|
610
|
|
|
evc = self.circuits[circuit_id] |
|
611
|
|
|
except KeyError as error: |
|
612
|
1 |
|
raise HTTPException( |
|
613
|
1 |
|
404, |
|
614
|
1 |
|
detail=f"circuit_id {circuit_id} not found." |
|
615
|
1 |
|
) from error |
|
616
|
|
|
|
|
617
|
|
|
with evc.lock: |
|
618
|
1 |
|
evc.remove_metadata(key) |
|
619
|
|
|
evc.sync() |
|
620
|
|
|
return JSONResponse("Operation successful") |
|
621
|
1 |
|
|
|
622
|
|
|
@rest("/v2/evc/{circuit_id}/redeploy", methods=["PATCH"]) |
|
623
|
|
|
def redeploy(self, request: Request) -> JSONResponse: |
|
624
|
1 |
|
"""Endpoint to force the redeployment of an EVC.""" |
|
625
|
1 |
|
circuit_id = request.path_params["circuit_id"] |
|
626
|
1 |
|
try_avoid_same_s_vlan = request.query_params.get( |
|
627
|
1 |
|
"try_avoid_same_s_vlan", "true" |
|
628
|
|
|
) |
|
629
|
|
|
try_avoid_same_s_vlan = try_avoid_same_s_vlan.lower() |
|
630
|
1 |
|
if try_avoid_same_s_vlan not in {"true", "false"}: |
|
631
|
|
|
msg = "Parameter try_avoid_same_s_vlan has an invalid value." |
|
632
|
|
|
raise HTTPException(400, detail=msg) |
|
633
|
1 |
|
log.debug("redeploy /v2/evc/%s/redeploy", circuit_id) |
|
634
|
1 |
|
try: |
|
635
|
|
|
evc = self.circuits[circuit_id] |
|
636
|
|
|
except KeyError: |
|
637
|
1 |
|
raise HTTPException( |
|
638
|
|
|
404, |
|
639
|
|
|
detail=f"circuit_id {circuit_id} not found" |
|
640
|
1 |
|
) from KeyError |
|
641
|
|
|
deployed = False |
|
642
|
|
|
with evc.lock: |
|
643
|
1 |
|
if evc.is_enabled(): |
|
644
|
|
|
path_dict = evc.remove_current_flows( |
|
645
|
1 |
|
sync=False, |
|
646
|
1 |
|
return_path=try_avoid_same_s_vlan == "true" |
|
647
|
|
|
) |
|
648
|
1 |
|
evc.remove_failover_flows(sync=True) |
|
649
|
1 |
|
deployed = evc.deploy(path_dict) |
|
650
|
|
|
if deployed: |
|
651
|
1 |
|
result = {"response": f"Circuit {circuit_id} redeploy received."} |
|
652
|
1 |
|
status = 202 |
|
653
|
1 |
|
else: |
|
654
|
|
|
result = { |
|
655
|
|
|
"response": f"Circuit {circuit_id} is disabled." |
|
656
|
|
|
} |
|
657
|
|
|
status = 409 |
|
658
|
|
|
|
|
659
|
|
|
return JSONResponse(result, status_code=status) |
|
660
|
|
|
|
|
661
|
|
|
@rest("/v2/evc/schedule/", methods=["POST"]) |
|
662
|
|
|
@validate_openapi(spec) |
|
663
|
|
|
def create_schedule(self, request: Request) -> JSONResponse: |
|
664
|
|
|
""" |
|
665
|
|
|
Create a new schedule for a given circuit. |
|
666
|
1 |
|
|
|
667
|
1 |
|
This service do no check if there are conflicts with another schedule. |
|
668
|
1 |
|
Payload example: |
|
669
|
|
|
{ |
|
670
|
|
|
"circuit_id":"aa:bb:cc", |
|
671
|
1 |
|
"schedule": { |
|
672
|
|
|
"date": "2019-08-07T14:52:10.967Z", |
|
673
|
|
|
"interval": "string", |
|
674
|
1 |
|
"frequency": "1 * * * *", |
|
675
|
1 |
|
"action": "create" |
|
676
|
1 |
|
} |
|
677
|
1 |
|
} |
|
678
|
|
|
""" |
|
679
|
1 |
|
log.debug("create_schedule /v2/evc/schedule/") |
|
680
|
1 |
|
data = get_json_or_400(request, self.controller.loop) |
|
681
|
|
|
circuit_id = data["circuit_id"] |
|
682
|
1 |
|
schedule_data = data["schedule"] |
|
683
|
|
|
|
|
684
|
1 |
|
# Get EVC from circuits buffer |
|
685
|
|
|
circuits = self._get_circuits_buffer() |
|
686
|
|
|
|
|
687
|
1 |
|
# get the circuit |
|
688
|
|
|
evc = circuits.get(circuit_id) |
|
689
|
1 |
|
|
|
690
|
|
|
# get the circuit |
|
691
|
1 |
|
if not evc: |
|
692
|
|
|
result = f"circuit_id {circuit_id} not found" |
|
693
|
1 |
|
log.debug("create_schedule result %s %s", result, 404) |
|
694
|
1 |
|
raise HTTPException(404, detail=result) |
|
695
|
|
|
|
|
696
|
1 |
|
# new schedule from dict |
|
697
|
1 |
|
new_schedule = CircuitSchedule.from_dict(schedule_data) |
|
698
|
|
|
|
|
699
|
1 |
|
with evc.lock: |
|
700
|
1 |
|
# If there is no schedule, create the list |
|
701
|
|
|
if not evc.circuit_scheduler: |
|
702
|
|
|
evc.circuit_scheduler = [] |
|
703
|
|
|
|
|
704
|
|
|
# Add the new schedule |
|
705
|
|
|
evc.circuit_scheduler.append(new_schedule) |
|
706
|
|
|
|
|
707
|
1 |
|
# Add schedule job |
|
708
|
1 |
|
self.sched.add_circuit_job(evc, new_schedule) |
|
709
|
1 |
|
|
|
710
|
|
|
# save circuit to mongodb |
|
711
|
|
|
evc.sync() |
|
712
|
1 |
|
|
|
713
|
1 |
|
result = new_schedule.as_dict() |
|
714
|
1 |
|
status = 201 |
|
715
|
1 |
|
|
|
716
|
|
|
log.debug("create_schedule result %s %s", result, status) |
|
717
|
|
|
return JSONResponse(result, status_code=status) |
|
718
|
1 |
|
|
|
719
|
|
|
@rest("/v2/evc/schedule/{schedule_id}", methods=["PATCH"]) |
|
720
|
|
|
@validate_openapi(spec) |
|
721
|
1 |
|
def update_schedule(self, request: Request) -> JSONResponse: |
|
722
|
|
|
"""Update a schedule. |
|
723
|
1 |
|
|
|
724
|
|
|
Change all attributes from the given schedule from a EVC circuit. |
|
725
|
1 |
|
The schedule ID is preserved as default. |
|
726
|
1 |
|
Payload example: |
|
727
|
|
|
{ |
|
728
|
1 |
|
"date": "2019-08-07T14:52:10.967Z", |
|
729
|
1 |
|
"interval": "string", |
|
730
|
|
|
"frequency": "1 * * *", |
|
731
|
1 |
|
"action": "create" |
|
732
|
|
|
} |
|
733
|
|
|
""" |
|
734
|
|
|
data = get_json_or_400(request, self.controller.loop) |
|
735
|
|
|
schedule_id = request.path_params["schedule_id"] |
|
736
|
|
|
log.debug("update_schedule /v2/evc/schedule/%s", schedule_id) |
|
737
|
|
|
|
|
738
|
|
|
# TODO: Potentially not thread safe |
|
739
|
|
|
# Try to find a circuit schedule |
|
740
|
|
|
evc, found_schedule = self._find_evc_by_schedule_id(schedule_id) |
|
741
|
|
|
|
|
742
|
|
|
# Can not modify circuits deleted and archived |
|
743
|
|
|
if not found_schedule: |
|
744
|
1 |
|
result = f"schedule_id {schedule_id} not found" |
|
745
|
1 |
|
log.debug("update_schedule result %s %s", result, 404) |
|
746
|
|
|
raise HTTPException(404, detail=result) |
|
747
|
1 |
|
|
|
748
|
|
|
new_schedule = CircuitSchedule.from_dict(data) |
|
749
|
1 |
|
new_schedule.id = found_schedule.id |
|
750
|
1 |
|
|
|
751
|
1 |
|
with evc.lock: |
|
752
|
1 |
|
# Remove the old schedule |
|
753
|
1 |
|
evc.circuit_scheduler.remove(found_schedule) |
|
754
|
1 |
|
# Append the modified schedule |
|
755
|
1 |
|
evc.circuit_scheduler.append(new_schedule) |
|
756
|
|
|
|
|
757
|
1 |
|
# Cancel all schedule jobs |
|
758
|
1 |
|
self.sched.cancel_job(found_schedule.id) |
|
759
|
|
|
# Add the new circuit schedule |
|
760
|
|
|
self.sched.add_circuit_job(evc, new_schedule) |
|
761
|
|
|
# Save EVC to mongodb |
|
762
|
1 |
|
evc.sync() |
|
763
|
|
|
|
|
764
|
1 |
|
result = new_schedule.as_dict() |
|
765
|
1 |
|
status = 200 |
|
766
|
1 |
|
|
|
767
|
1 |
|
log.debug("update_schedule result %s %s", result, status) |
|
768
|
1 |
|
return JSONResponse(result, status_code=status) |
|
769
|
|
|
|
|
770
|
|
|
@rest("/v2/evc/schedule/{schedule_id}", methods=["DELETE"]) |
|
771
|
1 |
|
def delete_schedule(self, request: Request) -> JSONResponse: |
|
772
|
|
|
"""Remove a circuit schedule. |
|
773
|
|
|
|
|
774
|
1 |
|
Remove the Schedule from EVC. |
|
775
|
|
|
Remove the Schedule from cron job. |
|
776
|
|
|
Save the EVC to the Storehouse. |
|
777
|
|
|
""" |
|
778
|
|
|
schedule_id = request.path_params["schedule_id"] |
|
779
|
|
|
log.debug("delete_schedule /v2/evc/schedule/%s", schedule_id) |
|
780
|
1 |
|
# TODO: This _find_evc_by_schedule, doesn't seem thread safe. |
|
781
|
|
|
evc, found_schedule = self._find_evc_by_schedule_id(schedule_id) |
|
782
|
|
|
|
|
783
|
|
|
# Can not modify circuits deleted and archived |
|
784
|
|
|
if not found_schedule: |
|
785
|
|
|
result = f"schedule_id {schedule_id} not found" |
|
786
|
|
|
log.debug("delete_schedule result %s %s", result, 404) |
|
787
|
|
|
raise HTTPException(404, detail=result) |
|
788
|
|
|
|
|
789
|
|
|
# TODO: Found_schedule could be removed by another thread, |
|
790
|
1 |
|
# before this lock is entered. |
|
791
|
1 |
|
with evc.lock: |
|
792
|
1 |
|
# Remove the old schedule |
|
793
|
|
|
evc.circuit_scheduler.remove(found_schedule) |
|
794
|
1 |
|
|
|
795
|
|
|
# Cancel all schedule jobs |
|
796
|
|
|
self.sched.cancel_job(found_schedule.id) |
|
797
|
|
|
# Save EVC to mongodb |
|
798
|
1 |
|
evc.sync() |
|
799
|
1 |
|
|
|
800
|
1 |
|
result = "Schedule removed" |
|
801
|
1 |
|
status = 200 |
|
802
|
1 |
|
|
|
803
|
1 |
|
log.debug("delete_schedule result %s %s", result, status) |
|
804
|
1 |
|
return JSONResponse(result, status_code=status) |
|
805
|
1 |
|
|
|
806
|
1 |
|
def _check_no_tag_duplication( |
|
807
|
1 |
|
self, |
|
808
|
1 |
|
evc_id: str, |
|
809
|
1 |
|
uni_a: Optional[UNI] = None, |
|
810
|
1 |
|
uni_z: Optional[UNI] = None |
|
811
|
1 |
|
): |
|
812
|
|
|
"""Check if the given EVC has UNIs with no tag and if these are |
|
813
|
1 |
|
duplicated. Raise DuplicatedNoTagUNI if duplication is found. |
|
814
|
|
|
Args: |
|
815
|
|
|
evc (dict): EVC to be analyzed. |
|
816
|
|
|
""" |
|
817
|
|
|
|
|
818
|
|
|
# No UNIs |
|
819
|
|
|
if not (uni_a or uni_z): |
|
820
|
|
|
return |
|
821
|
|
|
|
|
822
|
|
|
if (not (uni_a and not uni_a.user_tag) and |
|
823
|
|
|
not (uni_z and not uni_z.user_tag)): |
|
824
|
|
|
return |
|
825
|
1 |
|
for circuit in self.circuits.copy().values(): |
|
826
|
|
|
if (not circuit.archived and circuit._id != evc_id): |
|
827
|
|
|
if uni_a and uni_a.user_tag is None: |
|
828
|
|
|
circuit.check_no_tag_duplicate(uni_a) |
|
829
|
|
|
if uni_z and uni_z.user_tag is None: |
|
830
|
|
|
circuit.check_no_tag_duplicate(uni_z) |
|
831
|
|
|
|
|
832
|
|
|
@listen_to("kytos/topology.link_up") |
|
833
|
|
|
def on_link_up(self, event): |
|
834
|
|
|
"""Change circuit when link is up or end_maintenance.""" |
|
835
|
|
|
self.handle_link_up(event) |
|
836
|
|
|
|
|
837
|
1 |
|
def handle_link_up(self, event): |
|
838
|
1 |
|
"""Change circuit when link is up or end_maintenance.""" |
|
839
|
|
|
log.info("Event handle_link_up %s", event.content["link"]) |
|
840
|
|
|
for evc in self.get_evcs_by_svc_level(): |
|
841
|
|
|
if evc.is_enabled() and not evc.archived: |
|
842
|
1 |
|
with evc.lock: |
|
843
|
|
|
evc.handle_link_up(event.content["link"]) |
|
844
|
|
|
|
|
845
|
|
|
# Possibly replace this with interruptions? |
|
846
|
|
|
@listen_to( |
|
847
|
|
|
'.*.switch.interface.(link_up|link_down|created|deleted)' |
|
848
|
|
|
) |
|
849
|
|
|
def on_interface_link_change(self, event: KytosEvent): |
|
850
|
|
|
""" |
|
851
|
|
|
Handler for interface link_up and link_down events. |
|
852
|
|
|
""" |
|
853
|
|
|
self.handle_on_interface_link_change(event) |
|
854
|
|
|
|
|
855
|
|
|
def handle_on_interface_link_change(self, event: KytosEvent): |
|
856
|
1 |
|
""" |
|
857
|
|
|
Handler to sort interface events {link_(up, down), create, deleted} |
|
858
|
|
|
|
|
859
|
|
|
To avoid multiple database updated (link flap): |
|
860
|
|
|
Every interface is identfied and processed in parallel. |
|
861
|
|
|
Once an interface event is received a time is started. |
|
862
|
|
|
While time is running self._intf_events will be updated. |
|
863
|
1 |
|
After time has passed last received event will be processed. |
|
864
|
|
|
""" |
|
865
|
|
|
iface = event.content.get("interface") |
|
866
|
|
|
with self._lock_interfaces[iface.id]: |
|
867
|
|
|
_now = event.timestamp |
|
868
|
1 |
|
# Return out of order events |
|
869
|
1 |
|
if ( |
|
870
|
1 |
|
iface.id in self._intf_events |
|
871
|
1 |
|
and self._intf_events[iface.id]["event"].timestamp > _now |
|
872
|
|
|
): |
|
873
|
1 |
|
return |
|
874
|
1 |
|
self._intf_events[iface.id].update({"event": event}) |
|
875
|
1 |
|
if "last_acquired" in self._intf_events[iface.id]: |
|
876
|
1 |
|
return |
|
877
|
1 |
|
self._intf_events[iface.id].update({"last_acquired": now()}) |
|
878
|
|
|
time.sleep(settings.UNI_STATE_CHANGE_DELAY) |
|
879
|
1 |
|
with self._lock_interfaces[iface.id]: |
|
880
|
|
|
event = self._intf_events[iface.id]["event"] |
|
881
|
1 |
|
self._intf_events[iface.id].pop('last_acquired', None) |
|
882
|
|
|
_, _, event_type = event.name.rpartition('.') |
|
883
|
1 |
|
if event_type in ('link_up', 'created'): |
|
884
|
1 |
|
self.handle_interface_link_up(iface) |
|
885
|
|
|
elif event_type in ('link_down', 'deleted'): |
|
886
|
|
|
self.handle_interface_link_down(iface) |
|
887
|
|
|
|
|
888
|
1 |
|
def handle_interface_link_up(self, interface): |
|
889
|
1 |
|
""" |
|
890
|
1 |
|
Handler for interface link_up events |
|
891
|
1 |
|
""" |
|
892
|
1 |
|
log.info("Event handle_interface_link_up %s", interface) |
|
893
|
|
|
for evc in self.get_evcs_by_svc_level(): |
|
894
|
|
|
if _does_uni_affect_evc(evc, interface, "up"): |
|
895
|
|
|
with evc.lock: |
|
896
|
1 |
|
evc.handle_interface_link_up( |
|
897
|
1 |
|
interface |
|
898
|
1 |
|
) |
|
899
|
1 |
|
|
|
900
|
|
|
def handle_interface_link_down(self, interface): |
|
901
|
1 |
|
""" |
|
902
|
|
|
Handler for interface link_down events |
|
903
|
|
|
""" |
|
904
|
|
|
log.info("Event handle_interface_link_down %s", interface) |
|
905
|
|
|
for evc in self.get_evcs_by_svc_level(): |
|
906
|
|
|
if _does_uni_affect_evc(evc, interface, "down"): |
|
907
|
|
|
with evc.lock: |
|
908
|
|
|
evc.handle_interface_link_down( |
|
909
|
|
|
interface |
|
910
|
|
|
) |
|
911
|
|
|
|
|
912
|
|
|
@listen_to("kytos/topology.link_down", pool="dynamic_single") |
|
913
|
|
|
def on_link_down(self, event): |
|
914
|
|
|
"""Change circuit when link is down or under_mantenance.""" |
|
915
|
|
|
self.handle_link_down(event) |
|
916
|
|
|
|
|
917
|
1 |
|
def prepare_swap_to_failover_flow(self, evc: EVC): |
|
918
|
|
|
"""Prepare an evc for switching to failover.""" |
|
919
|
|
|
install_flows = {} |
|
920
|
|
|
try: |
|
921
|
|
|
install_flows = evc.get_failover_flows() |
|
922
|
|
|
# pylint: disable=broad-except |
|
923
|
|
|
except Exception: |
|
924
|
|
|
err = traceback.format_exc() |
|
925
|
1 |
|
log.error( |
|
926
|
|
|
"Ignore Failover path for " |
|
927
|
|
|
f"{evc} due to error: {err}" |
|
928
|
|
|
) |
|
929
|
|
|
return install_flows |
|
930
|
1 |
|
|
|
931
|
1 |
|
def prepare_swap_to_failover_event(self, evc: EVC, install_flow): |
|
932
|
1 |
|
"""Prepare event contents for swap to failover.""" |
|
933
|
1 |
|
return map_evc_event_content( |
|
934
|
|
|
evc, |
|
935
|
1 |
|
flows=deepcopy(install_flow) |
|
936
|
1 |
|
) |
|
937
|
1 |
|
|
|
938
|
1 |
|
def execute_swap_to_failover( |
|
939
|
1 |
|
self, |
|
940
|
|
|
evcs: list[EVC] |
|
941
|
1 |
|
) -> tuple[list[EVC], list[EVC]]: |
|
942
|
|
|
"""Process changes needed to commit a swap to failover.""" |
|
943
|
1 |
|
event_contents = {} |
|
944
|
|
|
install_flows = {} |
|
945
|
1 |
|
swapped_evcs = list[EVC]() |
|
946
|
1 |
|
not_swapped_evcs = list[EVC]() |
|
947
|
|
|
|
|
948
|
|
|
for evc in evcs: |
|
949
|
|
|
install_flow = self.prepare_swap_to_failover_flow(evc) |
|
950
|
1 |
|
if install_flow: |
|
951
|
1 |
|
install_flows = merge_flow_dicts(install_flows, install_flow) |
|
952
|
1 |
|
event_contents[evc.id] =\ |
|
953
|
1 |
|
self.prepare_swap_to_failover_event(evc, install_flow) |
|
954
|
|
|
swapped_evcs.append(evc) |
|
955
|
|
|
else: |
|
956
|
|
|
not_swapped_evcs.append(evc) |
|
957
|
|
|
|
|
958
|
1 |
|
try: |
|
959
|
1 |
|
send_flow_mods_http( |
|
960
|
1 |
|
install_flows, |
|
961
|
1 |
|
"install" |
|
962
|
|
|
) |
|
963
|
1 |
|
for evc in swapped_evcs: |
|
964
|
|
|
temp_path = evc.current_path |
|
965
|
|
|
evc.current_path = evc.failover_path |
|
966
|
|
|
evc.failover_path = temp_path |
|
967
|
|
|
emit_event( |
|
968
|
|
|
self.controller, "failover_link_down", |
|
969
|
|
|
content=deepcopy(event_contents) |
|
970
|
|
|
) |
|
971
|
|
|
return swapped_evcs, not_swapped_evcs |
|
972
|
|
|
except FlowModException as exc: |
|
973
|
|
|
log.error(f"Fail to install failover flows for {evcs}: {exc}") |
|
974
|
|
|
return [], [*swapped_evcs, *not_swapped_evcs] |
|
975
|
|
|
|
|
976
|
|
|
def prepare_clear_failover_flow(self, evc: EVC): |
|
977
|
|
|
"""Prepare an evc for clearing the old path.""" |
|
978
|
|
|
del_flows = {} |
|
979
|
|
|
try: |
|
980
|
1 |
|
del_flows = prepare_delete_flow( |
|
981
|
|
|
merge_flow_dicts( |
|
982
|
1 |
|
evc._prepare_uni_flows(evc.failover_path, skip_in=True), |
|
983
|
1 |
|
evc._prepare_nni_flows(evc.failover_path) |
|
984
|
1 |
|
) |
|
985
|
|
|
) |
|
986
|
1 |
|
# pylint: disable=broad-except |
|
987
|
1 |
|
except Exception: |
|
988
|
1 |
|
err = traceback.format_exc() |
|
989
|
1 |
|
log.error(f"Fail to remove {evc} old_path: {err}") |
|
990
|
1 |
|
return del_flows |
|
991
|
|
|
|
|
992
|
1 |
|
def prepare_clear_failover_event(self, evc: EVC, delete_flow): |
|
993
|
|
|
"""Prepare event contents for clearing failover.""" |
|
994
|
1 |
|
return map_evc_event_content( |
|
995
|
1 |
|
evc, |
|
996
|
|
|
current_path=evc.current_path.as_dict(), |
|
997
|
|
|
removed_flows=deepcopy(delete_flow) |
|
998
|
|
|
) |
|
999
|
|
|
|
|
1000
|
1 |
|
def execute_clear_failover( |
|
1001
|
1 |
|
self, |
|
1002
|
1 |
|
evcs: list[EVC] |
|
1003
|
1 |
|
) -> tuple[list[EVC], list[EVC]]: |
|
1004
|
1 |
|
"""Process changes needed to commit clearing the failover path""" |
|
1005
|
1 |
|
event_contents = {} |
|
1006
|
1 |
|
delete_flows = {} |
|
1007
|
|
|
cleared_evcs = list[EVC]() |
|
1008
|
|
|
not_cleared_evcs = list[EVC]() |
|
1009
|
|
|
|
|
1010
|
|
|
for evc in evcs: |
|
1011
|
1 |
|
delete_flow = self.prepare_clear_failover_flow(evc) |
|
1012
|
1 |
|
if delete_flow: |
|
1013
|
1 |
|
delete_flows = merge_flow_dicts(delete_flows, delete_flow) |
|
1014
|
1 |
|
event_contents[evc.id] =\ |
|
1015
|
|
|
self.prepare_clear_failover_event(evc, delete_flow) |
|
1016
|
|
|
cleared_evcs.append(evc) |
|
1017
|
1 |
|
else: |
|
1018
|
|
|
not_cleared_evcs.append(evc) |
|
1019
|
1 |
|
|
|
1020
|
|
|
try: |
|
1021
|
1 |
|
send_flow_mods_http( |
|
1022
|
1 |
|
delete_flows, |
|
1023
|
|
|
'delete' |
|
1024
|
1 |
|
) |
|
1025
|
1 |
|
for evc in cleared_evcs: |
|
1026
|
1 |
|
evc.failover_path.make_vlans_available(self.controller) |
|
1027
|
1 |
|
evc.failover_path = Path([]) |
|
1028
|
1 |
|
emit_event( |
|
1029
|
1 |
|
self.controller, |
|
1030
|
|
|
"failover_old_path", |
|
1031
|
1 |
|
content=event_contents |
|
1032
|
1 |
|
) |
|
1033
|
1 |
|
return cleared_evcs, not_cleared_evcs |
|
1034
|
1 |
|
except FlowModException as exc: |
|
1035
|
|
|
log.error(f"Failed to delete failover flows for {evcs}: {exc}") |
|
1036
|
|
|
return [], [*cleared_evcs, *not_cleared_evcs] |
|
1037
|
|
|
|
|
1038
|
|
|
def prepare_undeploy_flow(self, evc: EVC): |
|
1039
|
1 |
|
"""Prepare an evc for undeploying.""" |
|
1040
|
1 |
|
del_flows = {} |
|
1041
|
|
|
try: |
|
1042
|
|
|
del_flows = prepare_delete_flow( |
|
1043
|
|
|
merge_flow_dicts( |
|
1044
|
|
|
evc._prepare_uni_flows(evc.current_path, skip_in=True), |
|
1045
|
1 |
|
evc._prepare_nni_flows(evc.current_path), |
|
1046
|
1 |
|
evc._prepare_nni_flows(evc.failover_path) |
|
1047
|
|
|
) |
|
1048
|
|
|
) |
|
1049
|
|
|
# pylint: disable=broad-except |
|
1050
|
|
|
except Exception: |
|
1051
|
1 |
|
err = traceback.format_exc() |
|
1052
|
|
|
log.error(f"Fail to undeploy {evc}: {err}") |
|
1053
|
|
|
return del_flows |
|
1054
|
|
|
|
|
1055
|
1 |
|
def execute_undeploy(self, evcs: list[EVC]): |
|
1056
|
|
|
"""Process changes needed to commit an undeploy""" |
|
1057
|
|
|
delete_flows = {} |
|
1058
|
|
|
undeploy_evcs = list[EVC]() |
|
1059
|
1 |
|
not_undeploy_evcs = list[EVC]() |
|
1060
|
1 |
|
|
|
1061
|
|
|
for evc in evcs: |
|
1062
|
|
|
delete_flow = self.prepare_undeploy_flow(evc) |
|
1063
|
|
|
if delete_flow: |
|
1064
|
1 |
|
delete_flows = merge_flow_dicts(delete_flows, delete_flow) |
|
1065
|
|
|
undeploy_evcs.append(evc) |
|
1066
|
1 |
|
else: |
|
1067
|
|
|
not_undeploy_evcs.append(evc) |
|
1068
|
1 |
|
|
|
1069
|
|
|
try: |
|
1070
|
|
|
send_flow_mods_http( |
|
1071
|
|
|
delete_flows, |
|
1072
|
1 |
|
'delete' |
|
1073
|
1 |
|
) |
|
1074
|
|
|
|
|
1075
|
1 |
|
for evc in undeploy_evcs: |
|
1076
|
|
|
evc.current_path.make_vlans_available(self.controller) |
|
1077
|
1 |
|
evc.failover_path.make_vlans_available(self.controller) |
|
1078
|
|
|
evc.current_path = Path([]) |
|
1079
|
|
|
evc.failover_path = Path([]) |
|
1080
|
|
|
evc.deactivate() |
|
1081
|
1 |
|
emit_event( |
|
1082
|
1 |
|
self.controller, |
|
1083
|
|
|
"need_redeploy", |
|
1084
|
1 |
|
content={"evc_id": evc.id} |
|
1085
|
|
|
) |
|
1086
|
1 |
|
log.info(f"{evc} scheduled for redeploy") |
|
1087
|
1 |
|
return undeploy_evcs, not_undeploy_evcs |
|
1088
|
|
|
except FlowModException as exc: |
|
1089
|
|
|
log.error( |
|
1090
|
|
|
f"Failed to delete flows before redeploy for {evcs}: {exc}" |
|
1091
|
1 |
|
) |
|
1092
|
1 |
|
return [], [*undeploy_evcs, *not_undeploy_evcs] |
|
1093
|
|
|
|
|
1094
|
|
|
def handle_link_down(self, event): |
|
1095
|
|
|
"""Change circuit when link is down or under_mantenance.""" |
|
1096
|
1 |
|
link = event.content["link"] |
|
1097
|
1 |
|
log.info("Event handle_link_down %s", link) |
|
1098
|
|
|
|
|
1099
|
|
|
with ExitStack() as exit_stack: |
|
1100
|
|
|
exit_stack.enter_context(self.multi_evc_lock) |
|
1101
|
1 |
|
swap_to_failover = list[EVC]() |
|
1102
|
|
|
undeploy = list[EVC]() |
|
1103
|
|
|
clear_failover = list[EVC]() |
|
1104
|
|
|
evcs_to_update = dict[str, EVC]() |
|
1105
|
|
|
|
|
1106
|
|
|
for evc in self.get_evcs_by_svc_level(): |
|
1107
|
|
|
with ExitStack() as sub_stack: |
|
1108
|
|
|
sub_stack.enter_context(evc.lock) |
|
1109
|
|
|
if all(( |
|
1110
|
|
|
evc.is_affected_by_link(link), |
|
1111
|
|
|
evc.failover_path, |
|
1112
|
|
|
not evc.is_failover_path_affected_by_link(link) |
|
1113
|
|
|
)): |
|
1114
|
|
|
swap_to_failover.append(evc) |
|
1115
|
|
|
elif all(( |
|
1116
|
|
|
evc.is_affected_by_link(link), |
|
1117
|
1 |
|
not evc.failover_path or |
|
1118
|
1 |
|
evc.is_failover_path_affected_by_link(link) |
|
1119
|
|
|
)): |
|
1120
|
|
|
undeploy.append(evc) |
|
1121
|
|
|
elif all(( |
|
1122
|
1 |
|
not evc.is_affected_by_link(link), |
|
1123
|
|
|
evc.failover_path, |
|
1124
|
1 |
|
evc.is_failover_path_affected_by_link(link) |
|
1125
|
1 |
|
)): |
|
1126
|
1 |
|
clear_failover.append(evc) |
|
1127
|
1 |
|
else: |
|
1128
|
1 |
|
continue |
|
1129
|
1 |
|
|
|
1130
|
|
|
exit_stack.push(sub_stack.pop_all()) |
|
1131
|
1 |
|
|
|
1132
|
1 |
|
# Swap from current path to failover path |
|
1133
|
1 |
|
|
|
1134
|
1 |
|
if swap_to_failover: |
|
1135
|
1 |
|
success, failure = self.execute_swap_to_failover( |
|
1136
|
1 |
|
swap_to_failover |
|
1137
|
|
|
) |
|
1138
|
|
|
|
|
1139
|
1 |
|
clear_failover.extend(success) |
|
1140
|
1 |
|
|
|
1141
|
|
|
evcs_to_update.update((evc.id, evc) for evc in success) |
|
1142
|
|
|
|
|
1143
|
|
|
undeploy.extend(failure) |
|
1144
|
1 |
|
|
|
1145
|
|
|
# Clear out failover path |
|
1146
|
|
|
|
|
1147
|
|
|
if clear_failover: |
|
1148
|
|
|
success, failure = self.execute_clear_failover(clear_failover) |
|
1149
|
|
|
|
|
1150
|
|
|
evcs_to_update.update((evc.id, evc) for evc in success) |
|
1151
|
1 |
|
|
|
1152
|
1 |
|
undeploy.extend(failure) |
|
1153
|
|
|
|
|
1154
|
|
|
# Undeploy the evc, schedule a redeploy |
|
1155
|
|
|
|
|
1156
|
1 |
|
if undeploy: |
|
1157
|
|
|
success, failure = self.execute_undeploy(undeploy) |
|
1158
|
1 |
|
|
|
1159
|
1 |
|
evcs_to_update.update((evc.id, evc) for evc in success) |
|
1160
|
1 |
|
|
|
1161
|
1 |
|
if failure: |
|
1162
|
1 |
|
log.error(f"Failed to handle_link_down for {failure}") |
|
1163
|
|
|
|
|
1164
|
|
|
# Push update to DB |
|
1165
|
1 |
|
|
|
1166
|
|
|
if evcs_to_update: |
|
1167
|
1 |
|
evc_dicts = list[dict]() |
|
1168
|
1 |
|
update_time = now() |
|
1169
|
1 |
|
for evc in evcs_to_update.values(): |
|
1170
|
1 |
|
evc.updated_at = update_time |
|
1171
|
|
|
evc_dicts.append(evc.as_dict()) |
|
1172
|
|
|
self.mongo_controller.update_evcs( |
|
1173
|
1 |
|
evc_dicts |
|
1174
|
1 |
|
) |
|
1175
|
1 |
|
|
|
1176
|
|
|
@listen_to("kytos/mef_eline.need_redeploy") |
|
1177
|
1 |
|
def on_evc_need_redeploy(self, event): |
|
1178
|
1 |
|
"""Redeploy evcs that need to be redeployed.""" |
|
1179
|
1 |
|
self.handle_evc_need_redeploy(event) |
|
1180
|
|
|
|
|
1181
|
1 |
|
def handle_evc_need_redeploy(self, event): |
|
1182
|
1 |
|
"""Redeploy evcs that need to be redeployed.""" |
|
1183
|
|
|
evc = self.circuits.get(event.content["evc_id"]) |
|
1184
|
|
|
if evc is None: |
|
1185
|
|
|
return |
|
1186
|
1 |
|
with evc.lock: |
|
1187
|
|
|
if not evc.is_enabled() or evc.is_active(): |
|
1188
|
1 |
|
return |
|
1189
|
1 |
|
result = evc.deploy() |
|
1190
|
1 |
|
event_name = "error_redeploy_link_down" |
|
1191
|
1 |
|
if result: |
|
1192
|
1 |
|
log.info(f"{evc} redeployed") |
|
1193
|
1 |
|
event_name = "redeployed_link_down" |
|
1194
|
1 |
|
emit_event(self.controller, event_name, |
|
1195
|
1 |
|
content=map_evc_event_content(evc)) |
|
1196
|
1 |
|
|
|
1197
|
1 |
|
@listen_to("kytos/mef_eline.evc_affected_by_link_down") |
|
1198
|
|
|
def on_evc_affected_by_link_down(self, event): |
|
1199
|
1 |
|
"""Change circuit when link is down or under_mantenance.""" |
|
1200
|
|
|
self.handle_evc_affected_by_link_down(event) |
|
1201
|
|
|
|
|
1202
|
|
|
def handle_evc_affected_by_link_down(self, event): |
|
1203
|
|
|
"""Change circuit when link is down or under_mantenance.""" |
|
1204
|
1 |
|
evc = self.circuits.get(event.content["evc_id"]) |
|
1205
|
1 |
|
link = event.content['link'] |
|
1206
|
|
|
if not evc: |
|
1207
|
|
|
return |
|
1208
|
1 |
|
with evc.lock: |
|
1209
|
1 |
|
if not evc.is_affected_by_link(link): |
|
1210
|
1 |
|
return |
|
1211
|
1 |
|
result = evc.handle_link_down() |
|
1212
|
1 |
|
event_name = "error_redeploy_link_down" |
|
1213
|
1 |
|
if result: |
|
1214
|
|
|
log.info(f"{evc} redeployed due to link down {link.id}") |
|
1215
|
1 |
|
event_name = "redeployed_link_down" |
|
1216
|
1 |
|
emit_event(self.controller, event_name, |
|
1217
|
1 |
|
content=map_evc_event_content(evc)) |
|
1218
|
1 |
|
|
|
1219
|
|
|
@listen_to("kytos/mef_eline.(redeployed_link_(up|down)|deployed)") |
|
1220
|
|
|
def on_evc_deployed(self, event): |
|
1221
|
|
|
"""Handle EVC deployed|redeployed_link_down.""" |
|
1222
|
|
|
self.handle_evc_deployed(event) |
|
1223
|
|
|
|
|
1224
|
|
|
def handle_evc_deployed(self, event): |
|
1225
|
|
|
"""Setup failover path on evc deployed.""" |
|
1226
|
1 |
|
evc = self.circuits.get(event.content["evc_id"]) |
|
1227
|
1 |
|
if not evc: |
|
1228
|
|
|
return |
|
1229
|
|
|
with evc.lock: |
|
1230
|
|
|
evc.try_setup_failover_path() |
|
1231
|
|
|
|
|
1232
|
|
|
@listen_to("kytos/topology.topology_loaded") |
|
1233
|
|
|
def on_topology_loaded(self, event): # pylint: disable=unused-argument |
|
1234
|
1 |
|
"""Load EVCs once the topology is available.""" |
|
1235
|
|
|
self.load_all_evcs() |
|
1236
|
1 |
|
|
|
1237
|
|
|
def load_all_evcs(self): |
|
1238
|
|
|
"""Try to load all EVCs on startup.""" |
|
1239
|
|
|
circuits = self.mongo_controller.get_circuits()['circuits'].items() |
|
1240
|
1 |
|
for circuit_id, circuit in circuits: |
|
1241
|
|
|
if circuit_id not in self.circuits: |
|
1242
|
1 |
|
self._load_evc(circuit) |
|
1243
|
1 |
|
emit_event(self.controller, "evcs_loaded", content=dict(circuits), |
|
1244
|
1 |
|
timeout=1) |
|
1245
|
1 |
|
|
|
1246
|
|
|
def _load_evc(self, circuit_dict): |
|
1247
|
1 |
|
"""Load one EVC from mongodb to memory.""" |
|
1248
|
|
|
try: |
|
1249
|
1 |
|
evc = self._evc_from_dict(circuit_dict) |
|
1250
|
1 |
|
except (ValueError, KytosTagError) as exception: |
|
1251
|
|
|
log.error( |
|
1252
|
1 |
|
f"Could not load EVC: dict={circuit_dict} error={exception}" |
|
1253
|
1 |
|
) |
|
1254
|
1 |
|
return None |
|
1255
|
1 |
|
if evc.archived: |
|
1256
|
|
|
return None |
|
1257
|
|
|
|
|
1258
|
|
|
self.circuits.setdefault(evc.id, evc) |
|
1259
|
1 |
|
self.sched.add(evc) |
|
1260
|
1 |
|
return evc |
|
1261
|
1 |
|
|
|
1262
|
1 |
|
@listen_to("kytos/flow_manager.flow.error") |
|
1263
|
1 |
|
def on_flow_mod_error(self, event): |
|
1264
|
1 |
|
"""Handle flow mod errors related to an EVC.""" |
|
1265
|
1 |
|
self.handle_flow_mod_error(event) |
|
1266
|
1 |
|
|
|
1267
|
1 |
|
def handle_flow_mod_error(self, event): |
|
1268
|
1 |
|
"""Handle flow mod errors related to an EVC.""" |
|
1269
|
1 |
|
flow = event.content["flow"] |
|
1270
|
|
|
command = event.content.get("error_command") |
|
1271
|
1 |
|
if command != "add": |
|
1272
|
|
|
return |
|
1273
|
1 |
|
evc = self.circuits.get(EVC.get_id_from_cookie(flow.cookie)) |
|
1274
|
1 |
|
if not evc or evc.archived or not evc.is_enabled(): |
|
1275
|
1 |
|
return |
|
1276
|
|
|
with evc.lock: |
|
1277
|
1 |
|
evc.remove_current_flows(sync=False) |
|
1278
|
|
|
evc.remove_failover_flows(sync=True) |
|
1279
|
1 |
|
|
|
1280
|
1 |
|
def _evc_dict_with_instances(self, evc_dict): |
|
1281
|
|
|
"""Convert some dict values to instance of EVC classes. |
|
1282
|
1 |
|
|
|
1283
|
1 |
|
This method will convert: [UNI, Link] |
|
1284
|
1 |
|
""" |
|
1285
|
1 |
|
data = evc_dict.copy() # Do not modify the original dict |
|
1286
|
1 |
|
for attribute, value in data.items(): |
|
1287
|
1 |
|
# Get multiple attributes. |
|
1288
|
|
|
# Ex: uni_a, uni_z |
|
1289
|
|
|
if "uni" in attribute: |
|
1290
|
|
|
try: |
|
1291
|
1 |
|
data[attribute] = self._uni_from_dict(value) |
|
1292
|
1 |
|
except ValueError as exception: |
|
1293
|
1 |
|
result = "Error creating UNI: Invalid value" |
|
1294
|
1 |
|
raise ValueError(result) from exception |
|
1295
|
|
|
|
|
1296
|
1 |
|
if attribute == "circuit_scheduler": |
|
1297
|
1 |
|
data[attribute] = [] |
|
1298
|
1 |
|
for schedule in value: |
|
1299
|
1 |
|
data[attribute].append(CircuitSchedule.from_dict(schedule)) |
|
1300
|
|
|
|
|
1301
|
|
|
# Get multiple attributes. |
|
1302
|
1 |
|
# Ex: primary_links, |
|
1303
|
1 |
|
# backup_links, |
|
1304
|
|
|
# current_links_cache, |
|
1305
|
1 |
|
# primary_links_cache, |
|
1306
|
|
|
# backup_links_cache |
|
1307
|
|
|
if "links" in attribute: |
|
1308
|
|
|
data[attribute] = [ |
|
1309
|
|
|
self._link_from_dict(link, attribute) for link in value |
|
1310
|
|
|
] |
|
1311
|
|
|
|
|
1312
|
1 |
|
# Ex: current_path, |
|
1313
|
1 |
|
# primary_path, |
|
1314
|
1 |
|
# backup_path |
|
1315
|
|
|
if (attribute.endswith("path") and |
|
1316
|
|
|
attribute != "dynamic_backup_path"): |
|
1317
|
1 |
|
data[attribute] = Path( |
|
1318
|
1 |
|
[self._link_from_dict(link, attribute) for link in value] |
|
1319
|
1 |
|
) |
|
1320
|
1 |
|
|
|
1321
|
1 |
|
return data |
|
1322
|
1 |
|
|
|
1323
|
1 |
|
def _evc_from_dict(self, evc_dict): |
|
1324
|
1 |
|
data = self._evc_dict_with_instances(evc_dict) |
|
1325
|
1 |
|
data["table_group"] = self.table_group |
|
1326
|
|
|
return EVC(self.controller, **data) |
|
1327
|
1 |
|
|
|
1328
|
|
|
def _uni_from_dict(self, uni_dict): |
|
1329
|
|
|
"""Return a UNI object from python dict.""" |
|
1330
|
|
|
if uni_dict is None: |
|
1331
|
|
|
return False |
|
1332
|
|
|
|
|
1333
|
1 |
|
interface_id = uni_dict.get("interface_id") |
|
1334
|
|
|
interface = self.controller.get_interface_by_id(interface_id) |
|
1335
|
1 |
|
if interface is None: |
|
1336
|
1 |
|
result = ( |
|
1337
|
1 |
|
"Error creating UNI:" |
|
1338
|
1 |
|
+ f"Could not instantiate interface {interface_id}" |
|
1339
|
1 |
|
) |
|
1340
|
|
|
raise ValueError(result) from ValueError |
|
1341
|
|
|
tag_convert = {1: "vlan"} |
|
1342
|
1 |
|
tag_dict = uni_dict.get("tag", None) |
|
1343
|
1 |
|
if tag_dict: |
|
1344
|
|
|
tag_type = tag_dict.get("tag_type") |
|
1345
|
1 |
|
tag_type = tag_convert.get(tag_type, tag_type) |
|
1346
|
1 |
|
tag_value = tag_dict.get("value") |
|
1347
|
1 |
|
if isinstance(tag_value, list): |
|
1348
|
1 |
|
tag_value = get_tag_ranges(tag_value) |
|
1349
|
1 |
|
mask_list = get_vlan_tags_and_masks(tag_value) |
|
1350
|
1 |
|
tag = TAGRange(tag_type, tag_value, mask_list) |
|
1351
|
|
|
else: |
|
1352
|
|
|
tag = TAG(tag_type, tag_value) |
|
1353
|
1 |
|
else: |
|
1354
|
1 |
|
tag = None |
|
1355
|
1 |
|
uni = UNI(interface, tag) |
|
1356
|
1 |
|
return uni |
|
1357
|
1 |
|
|
|
1358
|
|
|
def _link_from_dict(self, link_dict: dict, attribute: str) -> Link: |
|
1359
|
|
|
"""Return a Link object from python dict.""" |
|
1360
|
|
|
id_a = link_dict.get("endpoint_a").get("id") |
|
1361
|
|
|
id_b = link_dict.get("endpoint_b").get("id") |
|
1362
|
|
|
|
|
1363
|
|
|
endpoint_a = self.controller.get_interface_by_id(id_a) |
|
1364
|
|
|
endpoint_b = self.controller.get_interface_by_id(id_b) |
|
1365
|
|
|
if not endpoint_a: |
|
1366
|
|
|
error_msg = f"Could not get interface endpoint_a id {id_a}" |
|
1367
|
|
|
raise ValueError(error_msg) |
|
1368
|
|
|
if not endpoint_b: |
|
1369
|
|
|
error_msg = f"Could not get interface endpoint_b id {id_b}" |
|
1370
|
|
|
raise ValueError(error_msg) |
|
1371
|
|
|
|
|
1372
|
|
|
link = Link(endpoint_a, endpoint_b) |
|
1373
|
|
|
allowed_paths = {"current_path", "failover_path"} |
|
1374
|
|
|
if "metadata" in link_dict and attribute in allowed_paths: |
|
1375
|
|
|
link.extend_metadata(link_dict.get("metadata")) |
|
1376
|
|
|
|
|
1377
|
|
|
s_vlan = link.get_metadata("s_vlan") |
|
1378
|
|
|
if s_vlan: |
|
1379
|
|
|
tag = TAG.from_dict(s_vlan) |
|
1380
|
|
|
if tag is False: |
|
1381
|
|
|
error_msg = f"Could not instantiate tag from dict {s_vlan}" |
|
1382
|
|
|
raise ValueError(error_msg) |
|
1383
|
|
|
link.update_metadata("s_vlan", tag) |
|
1384
|
|
|
return link |
|
1385
|
|
|
|
|
1386
|
|
|
def _find_evc_by_schedule_id(self, schedule_id): |
|
1387
|
|
|
""" |
|
1388
|
|
|
Find an EVC and CircuitSchedule based on schedule_id. |
|
1389
|
|
|
|
|
1390
|
|
|
:param schedule_id: Schedule ID |
|
1391
|
|
|
:return: EVC and Schedule |
|
1392
|
|
|
""" |
|
1393
|
|
|
circuits = self._get_circuits_buffer() |
|
1394
|
|
|
found_schedule = None |
|
1395
|
|
|
evc = None |
|
1396
|
|
|
|
|
1397
|
|
|
# pylint: disable=unused-variable |
|
1398
|
|
|
for c_id, circuit in circuits.items(): |
|
1399
|
|
|
# TODO: circuit_scheduler not protected by lock. |
|
1400
|
|
|
# Could be modified during iteration. |
|
1401
|
|
|
for schedule in circuit.circuit_scheduler: |
|
1402
|
|
|
if schedule.id == schedule_id: |
|
1403
|
|
|
found_schedule = schedule |
|
1404
|
|
|
evc = circuit |
|
1405
|
|
|
break |
|
1406
|
|
|
if found_schedule: |
|
1407
|
|
|
break |
|
1408
|
|
|
return evc, found_schedule |
|
1409
|
|
|
|
|
1410
|
|
|
def _get_circuits_buffer(self): |
|
1411
|
|
|
""" |
|
1412
|
|
|
Return the circuit buffer. |
|
1413
|
|
|
|
|
1414
|
|
|
If the buffer is empty, try to load data from mongodb. |
|
1415
|
|
|
""" |
|
1416
|
|
|
if not self.circuits: |
|
1417
|
|
|
# Load circuits from mongodb to buffer |
|
1418
|
|
|
circuits = self.mongo_controller.get_circuits()['circuits'] |
|
1419
|
|
|
for c_id, circuit in circuits.items(): |
|
1420
|
|
|
evc = self._evc_from_dict(circuit) |
|
1421
|
|
|
self.circuits[c_id] = evc |
|
1422
|
|
|
return self.circuits |
|
1423
|
|
|
|
|
1424
|
|
|
# pylint: disable=attribute-defined-outside-init |
|
1425
|
|
|
@alisten_to("kytos/of_multi_table.enable_table") |
|
1426
|
|
|
async def on_table_enabled(self, event): |
|
1427
|
|
|
"""Handle a recently table enabled.""" |
|
1428
|
|
|
table_group = event.content.get("mef_eline", None) |
|
1429
|
|
|
if not table_group: |
|
1430
|
|
|
return |
|
1431
|
|
|
for group in table_group: |
|
1432
|
|
|
if group not in settings.TABLE_GROUP_ALLOWED: |
|
1433
|
|
|
log.error(f'The table group "{group}" is not allowed for ' |
|
1434
|
|
|
f'mef_eline. Allowed table groups are ' |
|
1435
|
|
|
f'{settings.TABLE_GROUP_ALLOWED}') |
|
1436
|
|
|
return |
|
1437
|
|
|
self.table_group.update(table_group) |
|
1438
|
|
|
content = {"group_table": self.table_group} |
|
1439
|
|
|
name = "kytos/mef_eline.enable_table" |
|
1440
|
|
|
await aemit_event(self.controller, name, content) |
|
1441
|
|
|
|
kytos-ng /
mef_eline
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