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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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from flask import jsonify, request |
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from werkzeug.exceptions import (BadRequest, Conflict, Forbidden, |
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MethodNotAllowed, NotFound, |
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UnsupportedMediaType) |
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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.helpers import listen_to |
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from kytos.core.interface import TAG, UNI |
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from kytos.core.link import Link |
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from napps.kytos.mef_eline import settings |
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from napps.kytos.mef_eline.models import EVC, DynamicPathManager, Path |
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from napps.kytos.mef_eline.scheduler import CircuitSchedule, Scheduler |
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from napps.kytos.mef_eline.storehouse import StoreHouse |
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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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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.storehouse = StoreHouse(self.controller) |
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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 storehouse. |
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self.circuits = {} |
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# dictionary of EVCs by interface |
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self._circuits_by_interface = {} |
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self.execute_as_loop(settings.DEPLOY_EVCS_INTERVAL) |
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def execute(self): |
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"""Execute once when the napp is running.""" |
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for circuit in self.circuits.values(): |
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if circuit.is_enabled() and not circuit.is_active(): |
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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): |
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"""Endpoint to return circuits stored. |
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If archived is set to True return all circuits, else only the ones |
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not archived. |
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""" |
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log.debug('list_circuits /v2/evc') |
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archived = request.args.get('archived', False) |
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circuits = self.storehouse.get_data() |
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if not circuits: |
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return jsonify({}), 200 |
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if archived: |
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return jsonify(circuits), 200 |
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return jsonify({circuit_id: circuit |
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for circuit_id, circuit in circuits.items() |
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if not circuit.get('archived', False)}), 200 |
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@rest('/v2/evc/<circuit_id>', methods=['GET']) |
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def get_circuit(self, circuit_id): |
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"""Endpoint to return a circuit based on id.""" |
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log.debug('get_circuit /v2/evc/%s', circuit_id) |
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circuits = self.storehouse.get_data() |
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try: |
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result = circuits[circuit_id] |
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except KeyError: |
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result = f'circuit_id {circuit_id} not found' |
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log.debug('get_circuit result %s %s', result, 404) |
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raise NotFound(result) |
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status = 200 |
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log.debug('get_circuit result %s %s', result, status) |
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return jsonify(result), status |
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@rest('/v2/evc/', methods=['POST']) |
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def create_circuit(self): |
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"""Try to create a new circuit. |
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Firstly, for EVPL: E-Line NApp verifies if UNI_A's requested C-VID and |
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UNI_Z's requested C-VID are available from the interfaces' pools. This |
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is checked when creating the UNI object. |
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Then, E-Line NApp requests a primary and a backup path to the |
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Pathfinder NApp using the attributes primary_links and backup_links |
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submitted via REST |
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# For each link composing paths in #3: |
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# - E-Line NApp requests a S-VID available from the link VLAN pool. |
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# - Using the S-VID obtained, generate abstract flow entries to be |
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# sent to FlowManager |
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Push abstract flow entries to FlowManager and FlowManager pushes |
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OpenFlow entries to datapaths |
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E-Line NApp generates an event to notify all Kytos NApps of a new EVC |
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creation |
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Finnaly, notify user of the status of its request. |
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""" |
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# Try to create the circuit object |
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log.debug('create_circuit /v2/evc/') |
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try: |
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data = request.get_json() |
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except BadRequest: |
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result = 'The request body is not a well-formed JSON.' |
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log.debug('create_circuit result %s %s', result, 400) |
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raise BadRequest(result) |
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if data is None: |
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result = 'The request body mimetype is not application/json.' |
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log.debug('create_circuit result %s %s', result, 415) |
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raise UnsupportedMediaType(result) |
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try: |
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evc = self._evc_from_dict(data) |
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except ValueError as exception: |
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log.debug('create_circuit result %s %s', exception, 400) |
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raise BadRequest(str(exception)) |
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# verify duplicated evc |
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if self._is_duplicated_evc(evc): |
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result = "The EVC already exists." |
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log.debug('create_circuit result %s %s', result, 409) |
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raise Conflict(result) |
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# store circuit in dictionary |
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self.circuits[evc.id] = evc |
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# save circuit |
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self.storehouse.save_evc(evc) |
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# Schedule the circuit deploy |
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self.sched.add(evc) |
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# Circuit has no schedule, deploy now |
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if not evc.circuit_scheduler: |
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evc.deploy() |
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# Notify users |
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event = KytosEvent(name='kytos.mef_eline.created', |
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content=evc.as_dict()) |
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self.controller.buffers.app.put(event) |
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result = {"circuit_id": evc.id} |
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status = 201 |
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log.debug('create_circuit result %s %s', result, status) |
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return jsonify(result), status |
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@rest('/v2/evc/<circuit_id>', methods=['PATCH']) |
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def update(self, circuit_id): |
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"""Update a circuit based on payload. |
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The EVC required attributes (name, uni_a, uni_z) can't be updated. |
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""" |
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log.debug('update /v2/evc/%s', circuit_id) |
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try: |
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evc = self.circuits[circuit_id] |
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except KeyError: |
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result = f'circuit_id {circuit_id} not found' |
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log.debug('update result %s %s', result, 404) |
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raise NotFound(result) |
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if evc.archived: |
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result = "Can't update archived EVC" |
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log.debug('update result %s %s', result, 405) |
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raise MethodNotAllowed(['GET'], result) |
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try: |
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data = request.get_json() |
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except BadRequest: |
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result = 'The request body is not a well-formed JSON.' |
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log.debug('update result %s %s', result, 400) |
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raise BadRequest(result) |
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if data is None: |
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result = 'The request body mimetype is not application/json.' |
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log.debug('update result %s %s', result, 415) |
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raise UnsupportedMediaType(result) |
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try: |
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enable, path = \ |
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evc.update(**self._evc_dict_with_instances(data)) |
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except ValueError as exception: |
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log.error(exception) |
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log.debug('update result %s %s', exception, 400) |
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raise BadRequest(str(exception)) |
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if evc.is_active(): |
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if enable is False: # disable if active |
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evc.remove() |
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elif path is not None: # redeploy if active |
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evc.remove() |
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evc.deploy() |
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else: |
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if enable is True: # enable if inactive |
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evc.deploy() |
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result = {evc.id: evc.as_dict()} |
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status = 200 |
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log.debug('update result %s %s', result, status) |
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return jsonify(result), status |
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@rest('/v2/evc/<circuit_id>', methods=['DELETE']) |
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def delete_circuit(self, circuit_id): |
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"""Remove a circuit. |
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First, the flows are removed from the switches, and then the EVC is |
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disabled. |
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""" |
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log.debug('delete_circuit /v2/evc/%s', circuit_id) |
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try: |
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evc = self.circuits[circuit_id] |
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except KeyError: |
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result = f'circuit_id {circuit_id} not found' |
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log.debug('delete_circuit result %s %s', result, 404) |
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raise NotFound(result) |
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if evc.archived: |
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result = f'Circuit {circuit_id} already removed' |
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log.debug('delete_circuit result %s %s', result, 404) |
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raise NotFound(result) |
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log.info('Removing %s', evc) |
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evc.remove_current_flows() |
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evc.deactivate() |
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evc.disable() |
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self.sched.remove(evc) |
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evc.archive() |
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evc.sync() |
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log.info('EVC removed. %s', evc) |
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result = {'response': f'Circuit {circuit_id} removed'} |
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status = 200 |
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log.debug('delete_circuit result %s %s', result, status) |
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return jsonify(result), status |
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@rest('/v2/evc/schedule', methods=['GET']) |
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def list_schedules(self): |
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"""Endpoint to return all schedules stored for all circuits. |
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264
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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.storehouse.get_data().values() |
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if not circuits: |
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result = {} |
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status = 200 |
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return jsonify(result), 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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1 |
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if circuit_scheduler: |
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1 |
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for scheduler in circuit_scheduler: |
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1 |
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value = {"schedule_id": scheduler.get("id"), |
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"circuit_id": circuit.get("id"), |
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"schedule": scheduler} |
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result.append(value) |
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287
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log.debug('list_schedules result %s %s', result, status) |
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return jsonify(result), status |
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290
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1 |
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@rest('/v2/evc/schedule/', methods=['POST']) |
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def create_schedule(self): |
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""" |
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293
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Create a new schedule for a given circuit. |
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294
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295
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This service do no check if there are conflicts with another schedule. |
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Payload example: |
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{ |
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"circuit_id":"aa:bb:cc", |
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"schedule": { |
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300
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"date": "2019-08-07T14:52:10.967Z", |
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"interval": "string", |
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"frequency": "1 * * * *", |
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"action": "create" |
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304
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} |
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305
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} |
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306
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""" |
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307
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1 |
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log.debug('create_schedule /v2/evc/schedule/') |
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308
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309
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json_data = self.json_from_request('create_schedule') |
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310
|
1 |
|
try: |
|
311
|
1 |
|
circuit_id = json_data['circuit_id'] |
|
312
|
|
|
except TypeError: |
|
313
|
|
|
result = 'The payload should have a dictionary.' |
|
314
|
|
|
log.debug('create_schedule result %s %s', result, 400) |
|
315
|
|
|
raise BadRequest(result) |
|
316
|
|
|
except KeyError: |
|
317
|
|
|
result = 'Missing circuit_id.' |
|
318
|
|
|
log.debug('create_schedule result %s %s', result, 400) |
|
319
|
|
|
raise BadRequest(result) |
|
320
|
|
|
|
|
321
|
1 |
|
try: |
|
322
|
1 |
|
schedule_data = json_data['schedule'] |
|
323
|
|
|
except KeyError: |
|
324
|
|
|
result = 'Missing schedule data.' |
|
325
|
|
|
log.debug('create_schedule result %s %s', result, 400) |
|
326
|
|
|
raise BadRequest(result) |
|
327
|
|
|
|
|
328
|
|
|
# Get EVC from circuits buffer |
|
329
|
1 |
|
circuits = self._get_circuits_buffer() |
|
330
|
|
|
|
|
331
|
|
|
# get the circuit |
|
332
|
1 |
|
evc = circuits.get(circuit_id) |
|
333
|
|
|
|
|
334
|
|
|
# get the circuit |
|
335
|
1 |
|
if not evc: |
|
336
|
|
|
result = f'circuit_id {circuit_id} not found' |
|
337
|
|
|
log.debug('create_schedule result %s %s', result, 404) |
|
338
|
|
|
raise NotFound(result) |
|
339
|
|
|
# Can not modify circuits deleted and archived |
|
340
|
1 |
|
if evc.archived: |
|
341
|
|
|
result = f'Circuit {circuit_id} is archived. Update is forbidden.' |
|
342
|
|
|
log.debug('create_schedule result %s %s', result, 403) |
|
343
|
|
|
raise Forbidden(result) |
|
344
|
|
|
|
|
345
|
|
|
# new schedule from dict |
|
346
|
1 |
|
new_schedule = CircuitSchedule.from_dict(schedule_data) |
|
347
|
|
|
|
|
348
|
|
|
# If there is no schedule, create the list |
|
349
|
1 |
|
if not evc.circuit_scheduler: |
|
350
|
|
|
evc.circuit_scheduler = [] |
|
351
|
|
|
|
|
352
|
|
|
# Add the new schedule |
|
353
|
1 |
|
evc.circuit_scheduler.append(new_schedule) |
|
354
|
|
|
|
|
355
|
|
|
# Add schedule job |
|
356
|
1 |
|
self.sched.add_circuit_job(evc, new_schedule) |
|
357
|
|
|
|
|
358
|
|
|
# save circuit to storehouse |
|
359
|
1 |
|
evc.sync() |
|
360
|
|
|
|
|
361
|
1 |
|
result = new_schedule.as_dict() |
|
362
|
1 |
|
status = 201 |
|
363
|
|
|
|
|
364
|
1 |
|
log.debug('create_schedule result %s %s', result, status) |
|
365
|
1 |
|
return jsonify(result), status |
|
366
|
|
|
|
|
367
|
1 |
|
@rest('/v2/evc/schedule/<schedule_id>', methods=['PATCH']) |
|
368
|
|
|
def update_schedule(self, schedule_id): |
|
369
|
|
|
"""Update a schedule. |
|
370
|
|
|
|
|
371
|
|
|
Change all attributes from the given schedule from a EVC circuit. |
|
372
|
|
|
The schedule ID is preserved as default. |
|
373
|
|
|
Payload example: |
|
374
|
|
|
{ |
|
375
|
|
|
"date": "2019-08-07T14:52:10.967Z", |
|
376
|
|
|
"interval": "string", |
|
377
|
|
|
"frequency": "1 * * *", |
|
378
|
|
|
"action": "create" |
|
379
|
|
|
} |
|
380
|
|
|
""" |
|
381
|
1 |
|
log.debug('update_schedule /v2/evc/schedule/%s', schedule_id) |
|
382
|
|
|
|
|
383
|
|
|
# Try to find a circuit schedule |
|
384
|
1 |
|
evc, found_schedule = self._find_evc_by_schedule_id(schedule_id) |
|
385
|
|
|
|
|
386
|
|
|
# Can not modify circuits deleted and archived |
|
387
|
1 |
|
if not found_schedule: |
|
388
|
|
|
result = f'schedule_id {schedule_id} not found' |
|
389
|
|
|
log.debug('update_schedule result %s %s', result, 404) |
|
390
|
|
|
raise NotFound(result) |
|
391
|
1 |
|
if evc.archived: |
|
392
|
1 |
|
result = f'Circuit {evc.id} is archived. Update is forbidden.' |
|
393
|
1 |
|
log.debug('update_schedule result %s %s', result, 403) |
|
394
|
1 |
|
raise Forbidden(result) |
|
395
|
|
|
|
|
396
|
1 |
|
data = self.json_from_request('update_schedule') |
|
397
|
|
|
|
|
398
|
1 |
|
new_schedule = CircuitSchedule.from_dict(data) |
|
399
|
1 |
|
new_schedule.id = found_schedule.id |
|
400
|
|
|
# Remove the old schedule |
|
401
|
1 |
|
evc.circuit_scheduler.remove(found_schedule) |
|
402
|
|
|
# Append the modified schedule |
|
403
|
1 |
|
evc.circuit_scheduler.append(new_schedule) |
|
404
|
|
|
|
|
405
|
|
|
# Cancel all schedule jobs |
|
406
|
1 |
|
self.sched.cancel_job(found_schedule.id) |
|
407
|
|
|
# Add the new circuit schedule |
|
408
|
1 |
|
self.sched.add_circuit_job(evc, new_schedule) |
|
409
|
|
|
# Save EVC to the storehouse |
|
410
|
1 |
|
evc.sync() |
|
411
|
|
|
|
|
412
|
1 |
|
result = new_schedule.as_dict() |
|
413
|
1 |
|
status = 200 |
|
414
|
|
|
|
|
415
|
1 |
|
log.debug('update_schedule result %s %s', result, status) |
|
416
|
1 |
|
return jsonify(result), status |
|
417
|
|
|
|
|
418
|
1 |
|
@rest('/v2/evc/schedule/<schedule_id>', methods=['DELETE']) |
|
419
|
|
|
def delete_schedule(self, schedule_id): |
|
420
|
|
|
"""Remove a circuit schedule. |
|
421
|
|
|
|
|
422
|
|
|
Remove the Schedule from EVC. |
|
423
|
|
|
Remove the Schedule from cron job. |
|
424
|
|
|
Save the EVC to the Storehouse. |
|
425
|
|
|
""" |
|
426
|
1 |
|
log.debug('delete_schedule /v2/evc/schedule/%s', schedule_id) |
|
427
|
1 |
|
evc, found_schedule = self._find_evc_by_schedule_id(schedule_id) |
|
428
|
|
|
|
|
429
|
|
|
# Can not modify circuits deleted and archived |
|
430
|
1 |
|
if not found_schedule: |
|
431
|
|
|
result = f'schedule_id {schedule_id} not found' |
|
432
|
|
|
log.debug('delete_schedule result %s %s', result, 404) |
|
433
|
|
|
raise NotFound(result) |
|
434
|
|
|
|
|
435
|
1 |
|
if evc.archived: |
|
436
|
1 |
|
result = f'Circuit {evc.id} is archived. Update is forbidden.' |
|
437
|
1 |
|
log.debug('delete_schedule result %s %s', result, 403) |
|
438
|
1 |
|
raise Forbidden(result) |
|
439
|
|
|
|
|
440
|
|
|
# Remove the old schedule |
|
441
|
1 |
|
evc.circuit_scheduler.remove(found_schedule) |
|
442
|
|
|
|
|
443
|
|
|
# Cancel all schedule jobs |
|
444
|
1 |
|
self.sched.cancel_job(found_schedule.id) |
|
445
|
|
|
# Save EVC to the storehouse |
|
446
|
1 |
|
evc.sync() |
|
447
|
|
|
|
|
448
|
1 |
|
result = "Schedule removed" |
|
449
|
1 |
|
status = 200 |
|
450
|
|
|
|
|
451
|
1 |
|
log.debug('delete_schedule result %s %s', result, status) |
|
452
|
1 |
|
return jsonify(result), status |
|
453
|
|
|
|
|
454
|
1 |
|
def _is_duplicated_evc(self, evc): |
|
455
|
|
|
"""Verify if the circuit given is duplicated with the stored evcs. |
|
456
|
|
|
|
|
457
|
|
|
Args: |
|
458
|
|
|
evc (EVC): circuit to be analysed. |
|
459
|
|
|
|
|
460
|
|
|
Returns: |
|
461
|
|
|
boolean: True if the circuit is duplicated, otherwise False. |
|
462
|
|
|
|
|
463
|
|
|
""" |
|
464
|
1 |
|
for circuit in self.circuits.values(): |
|
465
|
1 |
|
if not circuit.archived and circuit.shares_uni(evc): |
|
466
|
1 |
|
return True |
|
467
|
1 |
|
return False |
|
468
|
|
|
|
|
469
|
1 |
|
@listen_to('kytos/topology.link_up') |
|
470
|
|
|
def handle_link_up(self, event): |
|
471
|
|
|
"""Change circuit when link is up or end_maintenance.""" |
|
472
|
1 |
|
log.debug("Event handle_link_up %s", event) |
|
473
|
1 |
|
for evc in self.circuits.values(): |
|
474
|
1 |
|
if evc.is_enabled() and not evc.archived: |
|
475
|
1 |
|
with evc.lock: |
|
476
|
1 |
|
evc.handle_link_up(event.content['link']) |
|
477
|
|
|
|
|
478
|
1 |
|
@listen_to('kytos/topology.link_down') |
|
479
|
|
|
def handle_link_down(self, event): |
|
480
|
|
|
"""Change circuit when link is down or under_mantenance.""" |
|
481
|
1 |
|
log.debug("Event handle_link_down %s", event) |
|
482
|
1 |
|
for evc in self.circuits.values(): |
|
483
|
1 |
|
with evc.lock: |
|
484
|
1 |
|
if evc.is_affected_by_link(event.content['link']): |
|
485
|
1 |
|
log.debug(f'Handling evc {evc.id} on link down') |
|
486
|
1 |
|
evc.handle_link_down() |
|
487
|
|
|
|
|
488
|
1 |
|
def load_circuits_by_interface(self, circuits): |
|
489
|
|
|
"""Load circuits in storehouse for in-memory dictionary.""" |
|
490
|
1 |
|
for circuit_id, circuit in circuits.items(): |
|
491
|
1 |
|
intf_a = circuit['uni_a']['interface_id'] |
|
492
|
1 |
|
self.add_to_dict_of_sets(intf_a, circuit_id) |
|
493
|
1 |
|
intf_z = circuit['uni_z']['interface_id'] |
|
494
|
1 |
|
self.add_to_dict_of_sets(intf_z, circuit_id) |
|
495
|
1 |
|
for path in ('current_path', 'primary_path', 'backup_path'): |
|
496
|
1 |
|
for link in circuit[path]: |
|
497
|
1 |
|
intf_a = link['endpoint_a']['id'] |
|
498
|
1 |
|
self.add_to_dict_of_sets(intf_a, circuit_id) |
|
499
|
1 |
|
intf_b = link['endpoint_b']['id'] |
|
500
|
1 |
|
self.add_to_dict_of_sets(intf_b, circuit_id) |
|
501
|
|
|
|
|
502
|
1 |
|
def add_to_dict_of_sets(self, intf, circuit_id): |
|
503
|
|
|
"""Add a single item to the dictionary of circuits by interface.""" |
|
504
|
1 |
|
if intf not in self._circuits_by_interface: |
|
505
|
1 |
|
self._circuits_by_interface[intf] = set() |
|
506
|
1 |
|
self._circuits_by_interface[intf].add(circuit_id) |
|
507
|
|
|
|
|
508
|
1 |
|
@listen_to('kytos/topology.port.created') |
|
509
|
|
|
def load_evcs(self, event): |
|
510
|
|
|
"""Try to load the unloaded EVCs from storehouse.""" |
|
511
|
|
|
log.debug("Event load_evcs %s", event) |
|
512
|
|
|
circuits = self.storehouse.get_data() |
|
513
|
|
|
if not self._circuits_by_interface: |
|
514
|
|
|
self.load_circuits_by_interface(circuits) |
|
515
|
|
|
|
|
516
|
|
|
interface_id = '{}:{}'.format(event.content['switch'], |
|
517
|
|
|
event.content['port']) |
|
518
|
|
|
|
|
519
|
|
|
for circuit_id in self._circuits_by_interface.get(interface_id, []): |
|
520
|
|
|
if circuit_id in circuits and circuit_id not in self.circuits: |
|
521
|
|
|
try: |
|
522
|
|
|
evc = self._evc_from_dict(circuits[circuit_id]) |
|
523
|
|
|
except ValueError as exception: |
|
524
|
|
|
log.info( |
|
525
|
|
|
f'Could not load EVC {circuit_id} because {exception}') |
|
526
|
|
|
continue |
|
527
|
|
|
|
|
528
|
|
|
evc.deactivate() |
|
529
|
|
|
evc.current_path = Path([]) |
|
530
|
|
|
evc.sync() |
|
531
|
|
|
self.circuits.setdefault(circuit_id, evc) |
|
532
|
|
|
self.sched.add(evc) |
|
533
|
|
|
|
|
534
|
1 |
|
@listen_to('kytos/flow_manager.flow.error') |
|
535
|
|
|
def handle_flow_mod_error(self, event): |
|
536
|
|
|
"""Handle flow mod errors related to an EVC.""" |
|
537
|
|
|
flow = event.content['flow'] |
|
538
|
|
|
command = event.content.get('error_command') |
|
539
|
|
|
if command != 'add': |
|
540
|
|
|
return |
|
541
|
|
|
evc_id = f'{flow.cookie:x}' |
|
542
|
|
|
evc = self.circuits.get(evc_id) |
|
543
|
|
|
if evc: |
|
544
|
|
|
evc.remove_current_flows() |
|
545
|
|
|
|
|
546
|
1 |
|
def _evc_dict_with_instances(self, evc_dict): |
|
547
|
|
|
"""Convert some dict values to instance of EVC classes. |
|
548
|
|
|
|
|
549
|
|
|
This method will convert: [UNI, Link] |
|
550
|
|
|
""" |
|
551
|
1 |
|
data = evc_dict.copy() # Do not modify the original dict |
|
552
|
|
|
|
|
553
|
1 |
|
for attribute, value in data.items(): |
|
554
|
|
|
# Get multiple attributes. |
|
555
|
|
|
# Ex: uni_a, uni_z |
|
556
|
1 |
|
if 'uni' in attribute: |
|
557
|
1 |
|
try: |
|
558
|
1 |
|
data[attribute] = self._uni_from_dict(value) |
|
559
|
1 |
|
except ValueError as exc: |
|
560
|
1 |
|
raise ValueError(f'Error creating UNI: {exc}') |
|
561
|
|
|
|
|
562
|
1 |
|
if attribute == 'circuit_scheduler': |
|
563
|
1 |
|
data[attribute] = [] |
|
564
|
1 |
|
for schedule in value: |
|
565
|
1 |
|
data[attribute].append(CircuitSchedule.from_dict(schedule)) |
|
566
|
|
|
|
|
567
|
|
|
# Get multiple attributes. |
|
568
|
|
|
# Ex: primary_links, |
|
569
|
|
|
# backup_links, |
|
570
|
|
|
# current_links_cache, |
|
571
|
|
|
# primary_links_cache, |
|
572
|
|
|
# backup_links_cache |
|
573
|
1 |
|
if 'links' in attribute: |
|
574
|
1 |
|
data[attribute] = [self._link_from_dict(link) |
|
575
|
|
|
for link in value] |
|
576
|
|
|
|
|
577
|
|
|
# Get multiple attributes. |
|
578
|
|
|
# Ex: current_path, |
|
579
|
|
|
# primary_path, |
|
580
|
|
|
# backup_path |
|
581
|
1 |
|
if 'path' in attribute and attribute != 'dynamic_backup_path': |
|
582
|
1 |
|
data[attribute] = Path([self._link_from_dict(link) |
|
583
|
|
|
for link in value]) |
|
584
|
|
|
|
|
585
|
1 |
|
return data |
|
586
|
|
|
|
|
587
|
1 |
|
def _evc_from_dict(self, evc_dict): |
|
588
|
1 |
|
data = self._evc_dict_with_instances(evc_dict) |
|
589
|
1 |
|
return EVC(self.controller, **data) |
|
590
|
|
|
|
|
591
|
1 |
|
def _uni_from_dict(self, uni_dict): |
|
592
|
|
|
"""Return a UNI object from python dict.""" |
|
593
|
|
|
if uni_dict is None: |
|
594
|
|
|
return False |
|
595
|
|
|
|
|
596
|
|
|
interface_id = uni_dict.get("interface_id") |
|
597
|
|
|
interface = self.controller.get_interface_by_id(interface_id) |
|
598
|
|
|
if interface is None: |
|
599
|
|
|
raise ValueError(f'Could not instantiate interface {interface_id}') |
|
600
|
|
|
|
|
601
|
|
|
try: |
|
602
|
|
|
tag_dict = uni_dict["tag"] |
|
603
|
|
|
except KeyError: |
|
604
|
|
|
tag = None |
|
605
|
|
|
else: |
|
606
|
|
|
tag = TAG.from_dict(tag_dict) |
|
607
|
|
|
uni = UNI(interface, tag) |
|
608
|
|
|
|
|
609
|
|
|
return uni |
|
610
|
|
|
|
|
611
|
1 |
|
def _link_from_dict(self, link_dict): |
|
612
|
|
|
"""Return a Link object from python dict.""" |
|
613
|
1 |
|
id_a = link_dict.get('endpoint_a').get('id') |
|
614
|
1 |
|
id_b = link_dict.get('endpoint_b').get('id') |
|
615
|
|
|
|
|
616
|
1 |
|
endpoint_a = self.controller.get_interface_by_id(id_a) |
|
617
|
1 |
|
endpoint_b = self.controller.get_interface_by_id(id_b) |
|
618
|
|
|
|
|
619
|
1 |
|
link = Link(endpoint_a, endpoint_b) |
|
620
|
1 |
|
if 'metadata' in link_dict: |
|
621
|
|
|
link.extend_metadata(link_dict.get('metadata')) |
|
622
|
|
|
|
|
623
|
1 |
|
s_vlan = link.get_metadata('s_vlan') |
|
624
|
1 |
|
if s_vlan: |
|
625
|
|
|
tag = TAG.from_dict(s_vlan) |
|
626
|
|
|
if tag is False: |
|
627
|
|
|
error_msg = f'Could not instantiate tag from dict {s_vlan}' |
|
628
|
|
|
raise ValueError(error_msg) |
|
629
|
|
|
link.update_metadata('s_vlan', tag) |
|
630
|
1 |
|
return link |
|
631
|
|
|
|
|
632
|
1 |
|
def _find_evc_by_schedule_id(self, schedule_id): |
|
633
|
|
|
""" |
|
634
|
|
|
Find an EVC and CircuitSchedule based on schedule_id. |
|
635
|
|
|
|
|
636
|
|
|
:param schedule_id: Schedule ID |
|
637
|
|
|
:return: EVC and Schedule |
|
638
|
|
|
""" |
|
639
|
1 |
|
circuits = self._get_circuits_buffer() |
|
640
|
1 |
|
found_schedule = None |
|
641
|
1 |
|
evc = None |
|
642
|
|
|
|
|
643
|
|
|
# pylint: disable=unused-variable |
|
644
|
1 |
|
for c_id, circuit in circuits.items(): |
|
645
|
1 |
|
for schedule in circuit.circuit_scheduler: |
|
646
|
1 |
|
if schedule.id == schedule_id: |
|
647
|
1 |
|
found_schedule = schedule |
|
648
|
1 |
|
evc = circuit |
|
649
|
1 |
|
break |
|
650
|
1 |
|
if found_schedule: |
|
651
|
1 |
|
break |
|
652
|
1 |
|
return evc, found_schedule |
|
653
|
|
|
|
|
654
|
1 |
|
def _get_circuits_buffer(self): |
|
655
|
|
|
""" |
|
656
|
|
|
Return the circuit buffer. |
|
657
|
|
|
|
|
658
|
|
|
If the buffer is empty, try to load data from storehouse. |
|
659
|
|
|
""" |
|
660
|
1 |
|
if not self.circuits: |
|
661
|
|
|
# Load storehouse circuits to buffer |
|
662
|
1 |
|
circuits = self.storehouse.get_data() |
|
663
|
1 |
|
for c_id, circuit in circuits.items(): |
|
664
|
1 |
|
evc = self._evc_from_dict(circuit) |
|
665
|
1 |
|
self.circuits[c_id] = evc |
|
666
|
1 |
|
return self.circuits |
|
667
|
|
|
|
|
668
|
1 |
|
@staticmethod |
|
669
|
|
|
def json_from_request(caller): |
|
670
|
|
|
"""Return a json from request. |
|
671
|
|
|
|
|
672
|
|
|
If it was not possible to get a json from the request, log, for debug, |
|
673
|
|
|
who was the caller and the error that ocurred, and raise an |
|
674
|
|
|
Exception. |
|
675
|
|
|
""" |
|
676
|
1 |
|
try: |
|
677
|
1 |
|
json_data = request.get_json() |
|
678
|
|
|
except ValueError as exception: |
|
679
|
|
|
log.error(exception) |
|
680
|
|
|
log.debug(f'{caller} result {exception} 400') |
|
681
|
|
|
raise BadRequest(str(exception)) |
|
682
|
|
|
except BadRequest: |
|
683
|
|
|
result = 'The request is not a valid JSON.' |
|
684
|
|
|
log.debug(f'{caller} result {result} 400') |
|
685
|
|
|
raise BadRequest(result) |
|
686
|
1 |
|
if json_data is None: |
|
687
|
|
|
result = 'Content-Type must be application/json' |
|
688
|
|
|
log.debug(f'{caller} result {result} 415') |
|
689
|
|
|
raise UnsupportedMediaType(result) |
|
690
|
|
|
return json_data |
|
691
|
|
|
|
kytos /
mef_eline
