--- /dev/null
+# -*- coding: utf-8 -*-
+##
+# Copyright 2018 Telefonica
+# All Rights Reserved.
+#
+# Contributors: Oscar Gonzalez de Dios, Manuel Lopez Bravo, Guillermo Pajares Martin
+# 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.
+#
+# This work has been performed in the context of the Metro-Haul project -
+# funded by the European Commission under Grant number 761727 through the
+# Horizon 2020 program.
+##
+"""The WIM connector is responsible for establishing wide area network
+connectivity.
+
+This WIM connector implements the standard IETF RFC 8466 "A YANG Data
+ Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery"
+
+It receives the endpoints and the necessary details to request
+the Layer 2 service.
+"""
+import requests
+import json
+import uuid
+import time
+import logging
+from .wimconn import WimConnector, WimConnectorError
+"""CHeck layer where we move it"""
+
+class WimconnectorIETFL2VPN(WimConnector):
+ """IETF L2VPM WIM connector
+
+ Arguments: (To be completed)
+ wim (dict): WIM record, as stored in the database
+ wim_account (dict): WIM account record, as stored in the database
+ """
+ def __init__(self, wim, wim_account, config=None, logger=None):
+ self.logger = logging.getLogger('openmano.wimconn.ietfl2vpn')
+ super(WimconnectorIETFL2VPN, self).__init__(wim, wim_account, config, logger)
+ self.headers={'Content-Type': 'application/json'}
+ self.mappings = {m['wan_service_endpoint_id']: m
+ for m in self.service_endpoint_mapping}
+ self.user = wim_account.get("user")
+ self.passwd = wim_account.get("passwd")
+ if self.user != None and self.passwd != None:
+ self.auth = (self.user, self.passwd)
+ else:
+ self.auth=None
+ self.logger.info("IETFL2VPN Connector Initialized.")
+
+ def check_credentials(self):
+ endpoint = "{}/restconf/data/ietf-l2vpn-svc:l2vpn-svc/vpn-services".format(self.wim["wim_url"])
+ try:
+ response = requests.get(endpoint, auth=self.auth)
+ http_code = response.status_code
+ except requests.exceptions.RequestException as e:
+ raise WimConnectorError(e.message, http_code=503)
+
+ if http_code != 200:
+ raise WimConnectorError("Failed while authenticating", http_code=http_code)
+ self.logger.info("Credentials checked")
+
+
+ def get_connectivity_service_status(self, service_uuid, conn_info=None):
+ """Monitor the status of the connectivity service stablished
+
+ Arguments:
+ service_uuid: Connectivity service unique identifier
+
+ Returns:
+ Examples::
+ {'wim_status': 'ACTIVE'}
+ {'wim_status': 'INACTIVE'}
+ {'wim_status': 'DOWN'}
+ {'wim_status': 'ERROR'}
+ """
+ try:
+ self.logger.info("Sending get connectivity service stuatus")
+ servicepoint="{}/restconf/data/ietf-l2vpn-svc:l2vpn-svc/vpn-services/vpn-service={}/".format(self.wim["wim_url"],service_uuid)
+ response=requests.get(servicepoint, auth=self.auth)
+ if response.status_code!= requests.codes.ok :
+ raise WimConnectorError("Unable to obtain connectivity servcice status",http_code=response.status_code)
+ service_status={'wim_status': 'ACTIVE'}
+ return service_status
+ except requests.exceptions.ConnectionError:
+ raise WimConnectorError("Request Timeout",http_code=408)
+
+
+ def search_mapp(self,connection_point):
+ id = connection_point['service_endpoint_id']
+ if id not in self.mappings:
+ raise WimConnectorError("Endpoint {} not located".format(str(id)))
+ else:
+ return self.mappings[id]
+
+
+ def create_connectivity_service(self, service_type, connection_points,
+ **kwargs):
+ """Stablish WAN connectivity between the endpoints
+
+ Arguments:
+ service_type (str): ``ELINE`` (L2), ``ELAN`` (L2), ``ETREE`` (L2),
+ ``L3``.
+ connection_points (list): each point corresponds to
+ an entry point from the DC to the transport network. One
+ connection point serves to identify the specific access and
+ some other service parameters, such as encapsulation type.
+ Represented by a dict as follows::
+
+ {
+ "service_endpoint_id": ..., (str[uuid])
+ "service_endpoint_encapsulation_type": ...,
+ (enum: none, dot1q, ...)
+ "service_endpoint_encapsulation_info": {
+ ... (dict)
+ "vlan": ..., (int, present if encapsulation is dot1q)
+ "vni": ... (int, present if encapsulation is vxlan),
+ "peers": [(ipv4_1), (ipv4_2)]
+ (present if encapsulation is vxlan)
+ }
+ }
+
+ The service endpoint ID should be previously informed to the WIM
+ engine in the RO when the WIM port mapping is registered.
+
+ Keyword Arguments:
+ bandwidth (int): value in kilobytes
+ latency (int): value in milliseconds
+
+ Other QoS might be passed as keyword arguments.
+
+ Returns:
+ tuple: ``(service_id, conn_info)`` containing:
+ - *service_uuid* (str): UUID of the established connectivity
+ service
+ - *conn_info* (dict or None): Information to be stored at the
+ database (or ``None``). This information will be provided to
+ the :meth:`~.edit_connectivity_service` and :obj:`~.delete`.
+ **MUST** be JSON/YAML-serializable (plain data structures).
+
+ Raises:
+ WimConnectorException: In case of error.
+ """
+ if service_type=="ELINE":
+ if len(connection_points)>2:
+ raise WimConnectorError('Connections between more than '
+ '2 endpoints are not supported')
+ if len(connection_points)<2:
+ raise WimConnectorError('Connections must be of at least '
+ '2 endpoints')
+ """ First step, create the vpn service """
+ uuid_l2vpn=str(uuid.uuid4())
+ vpn_service={}
+ vpn_service["vpn-id"]= uuid_l2vpn
+ vpn_service["vpn-scv-type"]="vpws"
+ vpn_service["svc-topo"]= "any-to-any"
+ vpn_service["customer-name"]= "osm"
+ vpn_service_list=[]
+ vpn_service_list.append(vpn_service)
+ vpn_service_l={"vpn-service":vpn_service_list}
+ response_service_creation=None
+ conn_info=[]
+ self.logger.info("Sending vpn-service :{}".format(vpn_service_l))
+ try:
+ endpoint_service_creation="{}/restconf/data/ietf-l2vpn-svc:l2vpn-svc/vpn-services".format(self.wim["wim_url"])
+ response_service_creation=requests.post(endpoint_service_creation, headers=self.headers, json=vpn_service_l, auth=self.auth )
+ except requests.exceptions.ConnectionError:
+ raise WimConnectorError("Request to create service Timeout",http_code=408)
+ if response_service_creation.status_code == 409:
+ raise WimConnectorError("Service already exists",http_code=response_service_creation.status_code)
+ elif response_service_creation.status_code != requests.codes.created :
+ raise WimConnectorError("Request to create service not accepted",http_code=response_service_creation.status_code)
+ """ Second step, create the connections and vpn attachments """
+ for connection_point in connection_points:
+ connection_point_wan_info=self.search_mapp(connection_point)
+ site_network_access={}
+ connection={}
+ if connection_point["service_endpoint_encapsulation_type"]!="none":
+ if connection_point["service_endpoint_encapsulation_type"]=="dot1q":
+ """ The connection is a VLAN """
+ connection["encapsulation-type"]="dot1q-vlan-tagged"
+ tagged={}
+ tagged_interf={}
+ service_endpoint_encapsulation_info=connection_point["service_endpoint_encapsulation_info"]
+ if service_endpoint_encapsulation_info["vlan"]==None:
+ raise WimConnectorError("VLAN must be provided")
+ tagged_interf["cvlan-id"]= service_endpoint_encapsulation_info["vlan"]
+ tagged["dot1q-vlan-tagged"]=tagged_interf
+ connection["tagged-interface"]=tagged
+ else:
+ raise NotImplementedError("Encapsulation type not implemented")
+ site_network_access["connection"]=connection
+ self.logger.info("Sending connection:{}".format(connection))
+ vpn_attach={}
+ vpn_attach["vpn-id"]=uuid_l2vpn
+ vpn_attach["site-role"]=vpn_service["svc-topo"]+"-role"
+ site_network_access["vpn-attachment"]=vpn_attach
+ self.logger.info("Sending vpn-attachement :{}".format(vpn_attach))
+ uuid_sna=str(uuid.uuid4())
+ site_network_access["network-access-id"]=uuid_sna
+ site_network_accesses={}
+ site_network_access_list=[]
+ site_network_access_list.append(site_network_access)
+ site_network_accesses["site-network-access"]=site_network_access_list
+ conn_info_d={}
+ conn_info_d["site"] = connection_point_wan_info["site-id"]
+ conn_info_d["site-network-access-id"] = site_network_access["network-access-id"]
+ conn_info_d["mapping"] = None
+ conn_info.append(conn_info_d)
+ try:
+ endpoint_site_network_access_creation="{}/restconf/data/ietf-l2vpn-svc:l2vpn-svc/sites/site={}/site-network-accesses/".format(self.wim["wim_url"],connection_point_wan_info["site-id"])
+ response_endpoint_site_network_access_creation = requests.post(endpoint_site_network_access_creation, headers=self.headers, json=site_network_accesses, auth=self.auth )
+
+ if response_endpoint_site_network_access_creation.status_code == 409:
+ self.delete_connectivity_service(vpn_service["vpn-id"])
+ raise WimConnectorError("Site_Network_Access with ID '{}' already exists".format(site_network_access["network-access-id"]),http_code=response_endpoint_site_network_access_creation.status_code)
+
+ elif response_endpoint_site_network_access_creation.status_code == 400:
+ self.delete_connectivity_service(vpn_service["vpn-id"])
+ raise WimConnectorError("Site {} does not exist".format(connection_point_wan_info["site-id"]),http_code=response_endpoint_site_network_access_creation.status_code)
+
+ elif response_endpoint_site_network_access_creation.status_code!= requests.codes.created and response_endpoint_site_network_access_creation.status_code!= requests.codes.no_content:
+ self.delete_connectivity_service(vpn_service["vpn-id"])
+ raise WimConnectorError("Request no accepted",http_code=response_endpoint_site_network_access_creation.status_code)
+
+ except requests.exceptions.ConnectionError:
+ self.delete_connectivity_service(vpn_service["vpn-id"])
+ raise WimConnectorError("Request Timeout",http_code=408)
+ return uuid_l2vpn, conn_info
+
+ else:
+ raise NotImplementedError
+
+
+
+ def delete_connectivity_service(self, service_uuid, conn_info=None):
+ """Disconnect multi-site endpoints previously connected
+
+ This method should receive as the first argument the UUID generated by
+ the ``create_connectivity_service``
+ """
+ try:
+ self.logger.info("Sending delete")
+ servicepoint="{}/restconf/data/ietf-l2vpn-svc:l2vpn-svc/vpn-services/vpn-service={}/".format(self.wim["wim_url"],service_uuid)
+ response=requests.delete(servicepoint, auth=self.auth)
+ if response.status_code!=requests.codes.no_content :
+ raise WimConnectorError("Error in the request",http_code=response.status_code)
+ except requests.exceptions.ConnectionError:
+ raise WimConnectorError("Request Timeout",http_code=408)
+
+
+
+ def edit_connectivity_service(self, service_uuid, conn_info=None,
+ connection_points=None, **kwargs):
+ """Change an existing connectivity service, see
+ ``create_connectivity_service``"""
+
+ sites={"sites":{}}
+ site_list=[]
+ vpn_service={}
+ vpn_service["svc-topo"]= "any-to-any"
+ counter = 0
+ for connection_point in connection_points:
+ site_network_access={}
+ connection_point_wan_info=self.search_mapp(connection_point)
+ params_site={}
+ params_site["site-id"]= connection_point_wan_info["site-id"]
+ params_site["site-vpn-flavor"]= "site-vpn-flavor-single"
+ device_site={}
+ device_site["device-id"]=connection_point_wan_info["device-id"]
+ params_site["devices"]=device_site
+ network_access={}
+ connection={}
+ if connection_point["service_endpoint_encapsulation_type"]!="none":
+ if connection_point["service_endpoint_encapsulation_type"]=="dot1q":
+ """ The connection is a VLAN """
+ connection["encapsulation-type"]="dot1q-vlan-tagged"
+ tagged={}
+ tagged_interf={}
+ service_endpoint_encapsulation_info=connection_point["service_endpoint_encapsulation_info"]
+ if service_endpoint_encapsulation_info["vlan"]==None:
+ raise WimConnectorError("VLAN must be provided")
+ tagged_interf["cvlan-id"]= service_endpoint_encapsulation_info["vlan"]
+ tagged["dot1q-vlan-tagged"]=tagged_interf
+ connection["tagged-interface"]=tagged
+ else:
+ raise NotImplementedError("Encapsulation type not implemented")
+ site_network_access["connection"]=connection
+ vpn_attach={}
+ vpn_attach["vpn-id"]=service_uuid
+ vpn_attach["site-role"]=vpn_service["svc-topo"]+"-role"
+ site_network_access["vpn-attachment"]=vpn_attach
+ uuid_sna=conn_info[counter]["site-network-access-id"]
+ site_network_access["network-access-id"]=uuid_sna
+ site_network_accesses={}
+ site_network_access_list=[]
+ site_network_access_list.append(site_network_access)
+ site_network_accesses["site-network-access"]=site_network_access_list
+ try:
+ endpoint_site_network_access_edit="{}/restconf/data/ietf-l2vpn-svc:l2vpn-svc/sites/site={}/site-network-accesses/".format(self.wim["wim_url"],connection_point_wan_info["site-id"]) #MODIF
+ response_endpoint_site_network_access_creation = requests.put(endpoint_site_network_access_edit, headers=self.headers, json=site_network_accesses, auth=self.auth )
+ if response_endpoint_site_network_access_creation.status_code==400:
+ raise WimConnectorError("Service does not exist",http_code=response_endpoint_site_network_access_creation.status_code)
+ elif response_endpoint_site_network_access_creation.status_code!=201 and response_endpoint_site_network_access_creation.status_code!=204:
+ raise WimConnectorError("Request no accepted",http_code=response_endpoint_site_network_access_creation.status_code)
+ except requests.exceptions.ConnectionError:
+ raise WimConnectorError("Request Timeout",http_code=408)
+ counter += 1
+ return None
+
+ def clear_all_connectivity_services(self):
+ """Delete all WAN Links corresponding to a WIM"""
+ try:
+ self.logger.info("Sending clear all connectivity services")
+ servicepoint="{}/restconf/data/ietf-l2vpn-svc:l2vpn-svc/vpn-services".format(self.wim["wim_url"])
+ response=requests.delete(servicepoint, auth=self.auth)
+ if response.status_code!=requests.codes.no_content :
+ raise WimConnectorError("Unable to clear all connectivity services",http_code=response.status_code)
+ except requests.exceptions.ConnectionError:
+ raise WimConnectorError("Request Timeout",http_code=408)
+
+ def get_all_active_connectivity_services(self):
+ """Provide information about all active connections provisioned by a
+ WIM
+ """
+ try:
+ self.logger.info("Sending get all connectivity services")
+ servicepoint="{}/restconf/data/ietf-l2vpn-svc:l2vpn-svc/vpn-services".format(self.wim["wim_url"])
+ response=requests.get(servicepoint, auth=self.auth)
+ if response.status_code!= requests.codes.ok :
+ raise WimConnectorError("Unable to get all connectivity services",http_code=response.status_code)
+ return response
+ except requests.exceptions.ConnectionError:
+ raise WimConnectorError("Request Timeout",http_code=408)
projects / osm / RO.git / commitdiff