| /* |
| * Copyright 2016-present Open Networking Laboratory |
| * |
| * 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. |
| */ |
| package org.opencord.cordvtn.impl; |
| |
| import org.onlab.osgi.DefaultServiceDirectory; |
| import org.onlab.osgi.ServiceDirectory; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.mastership.MastershipService; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.config.NetworkConfigEvent; |
| import org.onosproject.net.config.NetworkConfigListener; |
| import org.onosproject.net.config.NetworkConfigRegistry; |
| import org.onosproject.net.host.HostEvent; |
| import org.onosproject.net.host.HostListener; |
| import org.onosproject.net.host.HostService; |
| import org.onosproject.xosclient.api.OpenStackAccess; |
| import org.onosproject.xosclient.api.VtnPort; |
| import org.onosproject.xosclient.api.VtnPortApi; |
| import org.onosproject.xosclient.api.VtnPortId; |
| import org.onosproject.xosclient.api.VtnService; |
| import org.onosproject.xosclient.api.VtnServiceApi; |
| import org.onosproject.xosclient.api.VtnServiceApi.ServiceType; |
| import org.onosproject.xosclient.api.VtnServiceId; |
| import org.onosproject.xosclient.api.XosAccess; |
| import org.onosproject.xosclient.api.XosClientService; |
| import org.opencord.cordvtn.api.Constants; |
| import org.opencord.cordvtn.api.CordVtnConfig; |
| import org.opencord.cordvtn.api.Instance; |
| import org.opencord.cordvtn.api.InstanceHandler; |
| import org.slf4j.Logger; |
| |
| import java.util.Objects; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.concurrent.ExecutorService; |
| import java.util.stream.Collectors; |
| import java.util.stream.StreamSupport; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor; |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.opencord.cordvtn.api.Constants.ERROR_OPENSTACK_ACCESS; |
| import static org.opencord.cordvtn.api.Constants.ERROR_XOS_ACCESS; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Provides default virtual network connectivity for service instances. |
| */ |
| public abstract class AbstractInstanceHandler implements InstanceHandler { |
| |
| protected final Logger log = getLogger(getClass()); |
| |
| protected CoreService coreService; |
| protected MastershipService mastershipService; |
| protected NetworkConfigRegistry configRegistry; |
| protected HostService hostService; |
| protected XosClientService xosClient; |
| |
| protected ApplicationId appId; |
| protected Optional<ServiceType> serviceType = Optional.empty(); |
| protected NetworkConfigListener configListener = new InternalConfigListener(); |
| protected HostListener hostListener = new InternalHostListener(); |
| |
| private XosAccess xosAccess = null; |
| private OpenStackAccess osAccess = null; |
| private final ExecutorService eventExecutor = newSingleThreadScheduledExecutor( |
| groupedThreads(this.getClass().getSimpleName(), "event-handler")); |
| |
| protected void activate() { |
| ServiceDirectory services = new DefaultServiceDirectory(); |
| coreService = services.get(CoreService.class); |
| configRegistry = services.get(NetworkConfigRegistry.class); |
| mastershipService = services.get(MastershipService.class); |
| hostService = services.get(HostService.class); |
| xosClient = services.get(XosClientService.class); |
| |
| appId = coreService.registerApplication(Constants.CORDVTN_APP_ID); |
| hostService.addListener(hostListener); |
| configRegistry.addListener(configListener); |
| |
| log.info("Started"); |
| } |
| |
| protected void deactivate() { |
| hostService.removeListener(hostListener); |
| configRegistry.removeListener(configListener); |
| eventExecutor.shutdown(); |
| |
| log.info("Stopped"); |
| } |
| |
| protected VtnService getVtnService(VtnServiceId serviceId) { |
| checkNotNull(osAccess, ERROR_OPENSTACK_ACCESS); |
| checkNotNull(xosAccess, ERROR_XOS_ACCESS); |
| |
| // TODO remove openstack access when XOS provides all information |
| VtnServiceApi serviceApi = xosClient.getClient(xosAccess).vtnService(); |
| VtnService service = serviceApi.service(serviceId, osAccess); |
| if (service == null) { |
| log.warn("Failed to get VtnService for {}", serviceId); |
| } |
| return service; |
| } |
| |
| protected VtnPort getVtnPort(Instance instance) { |
| checkNotNull(osAccess, ERROR_OPENSTACK_ACCESS); |
| checkNotNull(xosAccess, ERROR_XOS_ACCESS); |
| |
| VtnPortId vtnPortId = instance.portId(); |
| VtnPortApi portApi = xosClient.getClient(xosAccess).vtnPort(); |
| VtnPort vtnPort = portApi.vtnPort(vtnPortId, osAccess); |
| if (vtnPort == null) { |
| log.warn("Failed to get port information of {}", instance); |
| return null; |
| } |
| return vtnPort; |
| } |
| |
| protected Set<Instance> getInstances(VtnServiceId serviceId) { |
| return StreamSupport.stream(hostService.getHosts().spliterator(), false) |
| .filter(host -> Objects.equals( |
| serviceId.id(), |
| host.annotations().value(Instance.SERVICE_ID))) |
| .map(Instance::of) |
| .collect(Collectors.toSet()); |
| } |
| |
| protected void readConfiguration() { |
| CordVtnConfig config = configRegistry.getConfig(appId, CordVtnConfig.class); |
| if (config == null) { |
| log.debug("No configuration found"); |
| return; |
| } |
| osAccess = config.openstackAccess(); |
| xosAccess = config.xosAccess(); |
| } |
| |
| private class InternalHostListener implements HostListener { |
| |
| @Override |
| public void event(HostEvent event) { |
| Host host = event.subject(); |
| if (!mastershipService.isLocalMaster(host.location().deviceId())) { |
| // do not allow to proceed without mastership |
| return; |
| } |
| |
| Instance instance = Instance.of(host); |
| if (serviceType.isPresent() && |
| !serviceType.get().equals(instance.serviceType())) { |
| // not my service instance, do nothing |
| return; |
| } |
| |
| switch (event.type()) { |
| case HOST_UPDATED: |
| case HOST_ADDED: |
| eventExecutor.execute(() -> instanceDetected(instance)); |
| break; |
| case HOST_REMOVED: |
| eventExecutor.execute(() -> instanceRemoved(instance)); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| private class InternalConfigListener implements NetworkConfigListener { |
| |
| @Override |
| public void event(NetworkConfigEvent event) { |
| if (!event.configClass().equals(CordVtnConfig.class)) { |
| return; |
| } |
| |
| switch (event.type()) { |
| case CONFIG_ADDED: |
| case CONFIG_UPDATED: |
| readConfiguration(); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| } |