| /* |
| * 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.onosproject.kafkaintegration; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.util.Map; |
| import java.util.UUID; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.kafkaintegration.api.EventExporterService; |
| import org.onosproject.kafkaintegration.api.dto.EventSubscriber; |
| import org.onosproject.kafkaintegration.api.dto.EventSubscriberGroupId; |
| import org.onosproject.kafkaintegration.errors.InvalidApplicationException; |
| import org.onosproject.kafkaintegration.errors.InvalidGroupIdException; |
| import org.onosproject.kafkaintegration.errors.UnsupportedEventException; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.link.LinkService; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.onosproject.store.service.Serializer; |
| import org.onosproject.store.service.StorageService; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Implementation of Event Exporter Service. |
| * |
| */ |
| @Component(immediate = true) |
| @Service |
| public class EventExporterManager implements EventExporterService { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| // Stores the currently registered applications for event export service. |
| // Map of Appname to groupId |
| private Map<ApplicationId, EventSubscriberGroupId> registeredApps; |
| |
| private static final String REGISTERED_APPS = "registered-applications"; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected LinkService linkService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected StorageService storageService; |
| |
| private static final String NOT_YET_SUPPORTED = "Not yet supported."; |
| |
| private ApplicationId appId; |
| |
| @Activate |
| protected void activate() { |
| appId = coreService |
| .registerApplication("org.onosproject.kafkaintegration"); |
| |
| registeredApps = storageService |
| .<ApplicationId, EventSubscriberGroupId>consistentMapBuilder() |
| .withName(REGISTERED_APPS) |
| .withSerializer(Serializer.using(KryoNamespaces.API, |
| EventSubscriberGroupId.class, |
| UUID.class)) |
| .build().asJavaMap(); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public EventSubscriberGroupId registerListener(String appName) { |
| |
| // TODO: Remove it once ONOS provides a mechanism for external apps |
| // to register with the core service. See Jira - 4409 |
| ApplicationId externalAppId = coreService.registerApplication(appName); |
| |
| return registeredApps.computeIfAbsent(externalAppId, |
| (key) -> new EventSubscriberGroupId(UUID |
| .randomUUID())); |
| |
| } |
| |
| @Override |
| public void unregisterListener(String appName) { |
| ApplicationId externalAppId = |
| checkNotNull(coreService.getAppId(appName)); |
| registeredApps.remove(externalAppId); |
| } |
| |
| @Override |
| public void subscribe(EventSubscriber subscriber) |
| throws UnsupportedEventException, InvalidGroupIdException, |
| InvalidApplicationException { |
| |
| throw new UnsupportedOperationException(NOT_YET_SUPPORTED); |
| } |
| |
| @Override |
| public void unsubscribe(EventSubscriber subscriber) |
| throws InvalidGroupIdException, InvalidApplicationException { |
| |
| throw new UnsupportedOperationException(NOT_YET_SUPPORTED); |
| } |
| } |