| |
| # Copyright 2017-present Open Networking Foundation |
| # |
| # 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 os |
| import requests |
| import socket |
| import sys |
| import base64 |
| import json |
| from synchronizers.new_base.syncstep import DeferredException |
| from synchronizers.new_base.syncstep import SyncStep |
| from synchronizers.new_base.modelaccessor import * |
| from xos.logger import Logger, logging |
| |
| logger = Logger(level=logging.INFO) |
| |
| class SyncONOSNetcfg(SyncStep): |
| provides=[VTNService] |
| observes=VTNService |
| watches=[ModelLink(Node,via='node'), ModelLink(AddressPool,via='addresspool')] |
| requested_interval=0 |
| |
| def __init__(self, **args): |
| SyncStep.__init__(self, **args) |
| |
| def handle_watched_object(self, o): |
| logger.info("handle_watched_object is invoked for object %s" % (str(o)),extra=o.tologdict()) |
| if (type(o) is Node): # For Node add/delete/modify |
| self.call() |
| if (type(o) is AddressPool): # For public gateways |
| self.call() |
| |
| def get_node_tag(self, node, tagname): |
| tags = Tag.objects.filter(content_type=model_accessor.get_content_type_id(node), |
| object_id=node.id, |
| name=tagname) |
| return tags[0].value |
| |
| def get_service_instances_who_want_config(self): |
| service_instances = [] |
| # attribute is comma-separated list |
| for ta in ServiceInstanceAttribute.objects.filter(name="autogenerate"): |
| if ta.value: |
| for config in ta.value.split(','): |
| if config == "vtn-network-cfg": |
| service_instances.append(ta.service_instance) |
| return service_instances |
| |
| def save_service_instance_attribute(self, service_instance, name, value): |
| # returns True if something changed |
| something_changed=False |
| tas = ServiceInstanceAttribute.objects.filter(service_instance_id=service_instance.id, name=name) |
| if tas: |
| ta = tas[0] |
| if ta.value != value: |
| logger.info("updating %s with attribute" % name) |
| ta.value = value |
| ta.save(update_fields=["value", "updated"], always_update_timestamp=True) |
| something_changed = True |
| else: |
| logger.info("saving autogenerated config %s" % name) |
| ta = model_accessor.create_obj(ServiceInstanceAttribute, service_instance=service_instance, name=name, value=value) |
| ta.save() |
| something_changed = True |
| return something_changed |
| |
| # This function currently assumes a single Deployment and Site |
| def get_onos_netcfg(self, vtn): |
| privateGatewayMac = vtn.privateGatewayMac |
| localManagementIp = vtn.localManagementIp |
| ovsdbPort = vtn.ovsdbPort |
| sshPort = vtn.sshPort |
| sshUser = vtn.sshUser |
| sshKeyFile = vtn.sshKeyFile |
| mgmtSubnetBits = vtn.mgmtSubnetBits |
| xosEndpoint = vtn.xosEndpoint |
| xosUser = vtn.xosUser |
| xosPassword = vtn.xosPassword |
| |
| controllerPort = vtn.controllerPort |
| if ":" in controllerPort: |
| (c_hostname, c_port) = controllerPort.split(":",1) |
| controllerPort = socket.gethostbyname(c_hostname) + ":" + c_port |
| else: |
| controllerPort = ":" + controllerPort |
| |
| data = { |
| "apps" : { |
| "org.opencord.vtn" : { |
| "cordvtn" : { |
| "privateGatewayMac" : privateGatewayMac, |
| "localManagementIp": localManagementIp, |
| "ovsdbPort": ovsdbPort, |
| "ssh": { |
| "sshPort": sshPort, |
| "sshUser": sshUser, |
| "sshKeyFile": sshKeyFile |
| }, |
| "xos": { |
| "endpoint": xosEndpoint, |
| "user": xosUser, |
| "password": xosPassword |
| }, |
| "publicGateways": [], |
| "nodes" : [], |
| "controllers": [controllerPort] |
| } |
| } |
| } |
| } |
| |
| # Generate apps->org.opencord.vtn->cordvtn->openstack |
| controllers = Controller.objects.all() |
| if controllers: |
| controller = controllers[0] |
| keystone_server = controller.auth_url |
| user_name = controller.admin_user |
| tenant_name = controller.admin_tenant |
| password = controller.admin_password |
| openstack = { |
| "endpoint": keystone_server, |
| "tenant": tenant_name, |
| "user": user_name, |
| "password": password |
| } |
| data["apps"]["org.opencord.vtn"]["cordvtn"]["openstack"] = openstack |
| |
| # Generate apps->org.opencord.vtn->cordvtn->nodes |
| nodes = Node.objects.all() |
| for node in nodes: |
| try: |
| nodeip = socket.gethostbyname(node.name) |
| except socket.gaierror: |
| logger.warn("unable to resolve hostname %s: node will not be added to config" |
| % node.name) |
| continue |
| |
| try: |
| bridgeId = self.get_node_tag(node, "bridgeId") |
| dataPlaneIntf = self.get_node_tag(node, "dataPlaneIntf") |
| dataPlaneIp = self.get_node_tag(node, "dataPlaneIp") |
| except: |
| logger.error("not adding node %s to the VTN configuration" % node.name) |
| continue |
| |
| node_dict = { |
| "hostname": node.name, |
| "hostManagementIp": "%s/%s" % (nodeip, mgmtSubnetBits), |
| "bridgeId": bridgeId, |
| "dataPlaneIntf": dataPlaneIntf, |
| "dataPlaneIp": dataPlaneIp |
| } |
| |
| # this one is optional |
| try: |
| node_dict["hostManagementIface"] = self.get_node_tag(node, "hostManagementIface") |
| except IndexError: |
| pass |
| |
| data["apps"]["org.opencord.vtn"]["cordvtn"]["nodes"].append(node_dict) |
| |
| if not (data["apps"]["org.opencord.vtn"]["cordvtn"]["nodes"]): |
| raise DeferredException("Waiting for there to be valid nodes") |
| |
| # Generate apps->org.onosproject.cordvtn->cordvtn->publicGateways |
| # Pull the gateway information from Address Pool objects |
| for ap in AddressPool.objects.all(): |
| if (not ap.gateway_ip) or (not ap.gateway_mac): |
| logger.info("Gateway_ip or gateway_mac is blank for addresspool %s. Skipping." % ap) |
| continue |
| |
| gateway_dict = { |
| "gatewayIp": ap.gateway_ip, |
| "gatewayMac": ap.gateway_mac |
| } |
| data["apps"]["org.opencord.vtn"]["cordvtn"]["publicGateways"].append(gateway_dict) |
| |
| if not AddressPool.objects.all().exists(): |
| logger.info("No Address Pools present, not adding publicGateways to config") |
| |
| return json.dumps(data, indent=4, sort_keys=True) |
| |
| # TODO: Does this step execute every 5 seconds regardless of whether objects have changed? |
| # If so, what purpose does using watchers serve? |
| |
| def call(self, **args): |
| vtn_service = VTNService.objects.all() |
| if not vtn_service: |
| raise Exception("No VTN Service") |
| |
| vtn_service = vtn_service[0] |
| |
| # Check for autogenerate attribute |
| netcfg = self.get_onos_netcfg(vtn_service) |
| |
| service_instances = self.get_service_instances_who_want_config() |
| for service_instance in service_instances: |
| something_changed = self.save_service_instance_attribute(service_instance, "rest_onos/v1/network/configuration/", netcfg) |
| if (something_changed): |
| # make sure we cause the ServiceInstance to be updated as well as the attribute |
| # TODO: revisit this after synchronizer multi-object-watching is complete |
| service_instance.save(update_fields=["updated"], always_update_timestamp=True) |