E2E Orchestrator component:

- Remove unneeded files

src/e2e_orchestrator/service/TopologyTools.py

-    def retrieve_external_topologies(self):
-        i = 1
-        while True:
-            try:
-                ADD  = str(get_setting(f'EXT_CONTROLLER{i}_ADD'))
-                PORT = int(get_setting(f'EXT_CONTROLLER{i}_PORT'))
-            except: # pylint: disable=bare-except
-                break
-
-            try:
-                LOGGER.info('Retrieving external controller #{:d}'.format(i))
-                url = 'http://{:s}:{:d}/tfs-api/context/{:s}/topology_details/{:s}'.format(
-                    ADD, PORT, DEFAULT_CONTEXT_NAME, DEFAULT_TOPOLOGY_NAME
-                )
-                LOGGER.info('url={:s}'.format(str(url)))
-                topo = requests.get(url).json()
-                LOGGER.info('Retrieved external controller #{:d}'.format(i))
-            except: # pylint: disable=bare-except
-                LOGGER.exception('Exception retrieven topology from external controler #{:d}'.format(i))
-
-            topology_details = TopologyDetails(**topo)
-            context = Context()
-            context.context_id.context_uuid.uuid = topology_details.topology_id.context_id.context_uuid.uuid
-            context_client.SetContext(context)
-
-            topology = Topology()
-            topology.topology_id.context_id.CopyFrom(context.context_id)
-            topology.topology_id.topology_uuid.uuid = topology_details.topology_id.topology_uuid.uuid
-            context_client.SetTopology(topology)
-
-            for device in topology_details.devices:
-                context_client.SetDevice(device)
-
-            for link in topology_details.links:
-                context_client.SetLink(link)
-
-            i+=1

src/e2e_orchestrator/service/old_E2EOrchestratorServiceServicerImpl.py

-# Copyright 2022-2024 ETSI SDG TeraFlowSDN (TFS) (https://tfs.etsi.org/)
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import copy, grpc, json, logging, networkx, requests, threading
-from common.method_wrappers.Decorator import MetricsPool, safe_and_metered_rpc_method
-from common.proto.e2eorchestrator_pb2 import E2EOrchestratorRequest, E2EOrchestratorReply
-from common.proto.context_pb2 import (
-    Empty, Connection, EndPointId, Link, LinkId, TopologyDetails, Topology, Context, Service, ServiceId,
-    ServiceTypeEnum, ServiceStatusEnum)
-from common.proto.e2eorchestrator_pb2_grpc import E2EOrchestratorServiceServicer
-from common.proto.vnt_manager_pb2 import VNTSubscriptionRequest
-from common.tools.grpc.Tools import grpc_message_to_json_string
-from common.Constants import DEFAULT_CONTEXT_NAME, DEFAULT_TOPOLOGY_NAME
-from common.Settings import get_setting
-from context.client.ContextClient import ContextClient
-from context.service.database.uuids.EndPoint import endpoint_get_uuid
-from context.service.database.uuids.Device import device_get_uuid
-from service.client.ServiceClient import ServiceClient
-from websockets.sync.client import connect
-from websockets.sync.server import serve
-
-
-LOGGER = logging.getLogger(__name__)
-logging.getLogger("websockets").propagate = True
-logging.getLogger("requests.packages.urllib3").propagate = True
-
-METRICS_POOL = MetricsPool("E2EOrchestrator", "RPC")
-
-
-context_client: ContextClient = ContextClient()
-service_client: ServiceClient = ServiceClient()
-
-EXT_HOST = str(get_setting('WS_IP_HOST'))
-EXT_PORT = int(get_setting('WS_IP_PORT'))
-EXT_URL  = 'ws://{:s}:{:d}'.format(EXT_HOST, EXT_PORT)
-
-OWN_HOST = str(get_setting('WS_E2E_HOST'))
-OWN_PORT = int(get_setting('WS_E2E_PORT'))
-
-ALL_HOSTS = '0.0.0.0'
-
-class SubscriptionServer(threading.Thread):
-    def run(self):
-        request = VNTSubscriptionRequest()
-        request.host = OWN_HOST
-        request.port = OWN_PORT
-        try: 
-            LOGGER.debug('Trying to connect to {:s}'.format(EXT_URL))
-            websocket = connect(EXT_URL)
-        except: # pylint: disable=bare-except
-            LOGGER.exception('Error connecting to {:s}'.format(EXT_URL))
-        else:
-            with websocket:
-                LOGGER.debug('Connected to {:s}'.format(EXT_URL))
-                send = grpc_message_to_json_string(request)
-                websocket.send(send)
-                LOGGER.debug('Sent: {:s}'.format(send))
-                try:
-                    message = websocket.recv()
-                    LOGGER.debug('Received message from WebSocket: {:s}'.format(message))
-                except Exception as ex:
-                    LOGGER.error('Exception receiving from WebSocket: {:s}'.format(ex))
-            self._events_server()
-
-
-    def _events_server(self):
-        try:
-            server = serve(self._event_received, ALL_HOSTS, int(OWN_PORT))
-        except: # pylint: disable=bare-except
-            LOGGER.exception('Error starting server on {:s}:{:d}'.format(ALL_HOSTS, OWN_PORT))
-        else:
-            with server:
-                LOGGER.info('Running events server...: {:s}:{:d}'.format(ALL_HOSTS, OWN_PORT))
-                server.serve_forever()
-
-
-    def _event_received(self, connection):
-        LOGGER.debug('Event received')
-        for message in connection:
-            message_json = json.loads(message)
-
-            # Link creation
-            if 'link_id' in message_json:
-                LOGGER.debug('Link creation')
-                link = Link(**message_json)
-
-                service = Service()
-                service.service_id.service_uuid.uuid = link.link_id.link_uuid.uuid
-                service.service_id.context_id.context_uuid.uuid = DEFAULT_CONTEXT_NAME
-                service.service_type = ServiceTypeEnum.SERVICETYPE_OPTICAL_CONNECTIVITY
-                service.service_status.service_status = ServiceStatusEnum.SERVICESTATUS_PLANNED
-                service_client.CreateService(service)
-
-                a_device_uuid = device_get_uuid(link.link_endpoint_ids[0].device_id)
-                a_endpoint_uuid = endpoint_get_uuid(link.link_endpoint_ids[0])[2]
-                z_device_uuid = device_get_uuid(link.link_endpoint_ids[1].device_id)
-                z_endpoint_uuid = endpoint_get_uuid(link.link_endpoint_ids[1])[2]
-
-                links = context_client.ListLinks(Empty()).links
-                for _link in links:
-                    for _endpoint_id in _link.link_endpoint_ids:
-                        if _endpoint_id.device_id.device_uuid.uuid == a_device_uuid and \
-                        _endpoint_id.endpoint_uuid.uuid == a_endpoint_uuid:
-                            a_ep_id = _endpoint_id
-                        elif _endpoint_id.device_id.device_uuid.uuid == z_device_uuid and \
-                        _endpoint_id.endpoint_uuid.uuid == z_endpoint_uuid:
-                            z_ep_id = _endpoint_id
-
-                if (not 'a_ep_id' in locals()) or (not 'z_ep_id' in locals()):
-                    error_msg = f'Could not get VNT link endpoints\
-                                    \n\ta_endpoint_uuid= {a_endpoint_uuid}\
-                                    \n\tz_endpoint_uuid= {z_device_uuid}'
-                    LOGGER.error(error_msg)
-                    connection.send(error_msg)
-                    return
-
-                service.service_endpoint_ids.append(copy.deepcopy(a_ep_id))
-                service.service_endpoint_ids.append(copy.deepcopy(z_ep_id))
-
-                service_client.UpdateService(service)
-                re_svc = context_client.GetService(service.service_id)
-                connection.send(grpc_message_to_json_string(link))
-                context_client.SetLink(link)
-            elif 'link_uuid' in message_json:
-                LOGGER.debug('Link removal')
-                link_id = LinkId(**message_json)
-
-                service_id = ServiceId()
-                service_id.service_uuid.uuid = link_id.link_uuid.uuid
-                service_id.context_id.context_uuid.uuid = DEFAULT_CONTEXT_NAME
-                service_client.DeleteService(service_id)
-                connection.send(grpc_message_to_json_string(link_id))
-                context_client.RemoveLink(link_id)
-            else:
-                LOGGER.debug('Topology received')
-                topology_details = TopologyDetails(**message_json)
-
-                context = Context()
-                context.context_id.context_uuid.uuid = topology_details.topology_id.context_id.context_uuid.uuid
-                context_client.SetContext(context)
-
-                topology = Topology()
-                topology.topology_id.context_id.CopyFrom(context.context_id)
-                topology.topology_id.topology_uuid.uuid = topology_details.topology_id.topology_uuid.uuid
-                context_client.SetTopology(topology)
-
-                for device in topology_details.devices:
-                    context_client.SetDevice(device)
-
-                for link in topology_details.links:
-                    context_client.SetLink(link)
-
-
-
-class E2EOrchestratorServiceServicerImpl(E2EOrchestratorServiceServicer):
-    def __init__(self):
-        LOGGER.debug('Creating Servicer...')
-        try:
-            LOGGER.debug('Requesting subscription')
-            sub_server = SubscriptionServer()
-            sub_server.start()
-            LOGGER.debug('Servicer Created')
-            self.retrieve_external_topologies()
-        except:
-            LOGGER.exception('Unhandled Exception')
-
-    def retrieve_external_topologies(self):
-        i = 1
-        while True:
-            try:
-                ADD  = str(get_setting(f'EXT_CONTROLLER{i}_ADD'))
-                PORT = int(get_setting(f'EXT_CONTROLLER{i}_PORT'))
-            except: # pylint: disable=bare-except
-                break
-
-            try:
-                LOGGER.info('Retrieving external controller #{:d}'.format(i))
-                url = 'http://{:s}:{:d}/tfs-api/context/{:s}/topology_details/{:s}'.format(
-                    ADD, PORT, DEFAULT_CONTEXT_NAME, DEFAULT_TOPOLOGY_NAME
-                )
-                LOGGER.info('url={:s}'.format(str(url)))
-                topo = requests.get(url).json()
-                LOGGER.info('Retrieved external controller #{:d}'.format(i))
-            except: # pylint: disable=bare-except
-                LOGGER.exception('Exception retrieven topology from external controler #{:d}'.format(i))
-
-            topology_details = TopologyDetails(**topo)
-            context = Context()
-            context.context_id.context_uuid.uuid = topology_details.topology_id.context_id.context_uuid.uuid
-            context_client.SetContext(context)
-
-            topology = Topology()
-            topology.topology_id.context_id.CopyFrom(context.context_id)
-            topology.topology_id.topology_uuid.uuid = topology_details.topology_id.topology_uuid.uuid
-            context_client.SetTopology(topology)
-
-            for device in topology_details.devices:
-                context_client.SetDevice(device)
-
-            for link in topology_details.links:
-                context_client.SetLink(link)
-
-            i+=1
-
-        
-    @safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
-    def Compute(self, request: E2EOrchestratorRequest, context: grpc.ServicerContext) -> E2EOrchestratorReply:
-        endpoints_ids = []
-        for endpoint_id in request.service.service_endpoint_ids:
-            endpoints_ids.append(endpoint_get_uuid(endpoint_id)[2])
-
-        graph = networkx.Graph()
-
-        devices = context_client.ListDevices(Empty()).devices
-
-        for device in devices:
-            endpoints_uuids = [endpoint.endpoint_id.endpoint_uuid.uuid
-                               for endpoint in device.device_endpoints]
-            for ep in endpoints_uuids:
-                graph.add_node(ep)
-
-            for ep in endpoints_uuids:
-                for ep_i in endpoints_uuids:
-                    if ep == ep_i:
-                        continue
-                    graph.add_edge(ep, ep_i)
-
-        links = context_client.ListLinks(Empty()).links
-        for link in links:
-            eps = []
-            for endpoint_id in link.link_endpoint_ids:
-                eps.append(endpoint_id.endpoint_uuid.uuid)
-            graph.add_edge(eps[0], eps[1])
-
-
-        shortest = networkx.shortest_path(graph, endpoints_ids[0], endpoints_ids[1])
-
-        path = E2EOrchestratorReply()
-        path.services.append(copy.deepcopy(request.service))
-        for i in range(0, int(len(shortest)/2)):
-            conn = Connection()
-            ep_a_uuid = str(shortest[i*2])
-            ep_z_uuid = str(shortest[i*2+1])
-
-            conn.connection_id.connection_uuid.uuid = str(ep_a_uuid) + '_->_' + str(ep_z_uuid)
-
-            ep_a_id = EndPointId()
-            ep_a_id.endpoint_uuid.uuid = ep_a_uuid
-            conn.path_hops_endpoint_ids.append(ep_a_id)
-
-            ep_z_id = EndPointId()
-            ep_z_id.endpoint_uuid.uuid = ep_z_uuid
-            conn.path_hops_endpoint_ids.append(ep_z_id)
-
-            path.connections.append(conn)
-
-        return path