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/*
* Copyright 2015 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.vtnrsc.routerinterface.impl;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.slf4j.LoggerFactory.getLogger;
import java.util.Collection;
import java.util.Collections;
import java.util.Set;
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.onlab.util.KryoNamespace;
import org.onosproject.core.ApplicationId;
import org.onosproject.core.CoreService;
import org.onosproject.store.serializers.KryoNamespaces;
import org.onosproject.store.service.EventuallyConsistentMap;
import org.onosproject.store.service.EventuallyConsistentMapEvent;
import org.onosproject.store.service.EventuallyConsistentMapListener;
import org.onosproject.store.service.StorageService;
import org.onosproject.store.service.WallClockTimestamp;
import org.onosproject.vtnrsc.RouterId;
import org.onosproject.vtnrsc.RouterInterface;
import org.onosproject.vtnrsc.SubnetId;
import org.onosproject.vtnrsc.TenantId;
import org.onosproject.vtnrsc.VirtualPortId;
import org.onosproject.vtnrsc.router.RouterService;
import org.onosproject.vtnrsc.routerinterface.RouterInterfaceEvent;
import org.onosproject.vtnrsc.routerinterface.RouterInterfaceListener;
import org.onosproject.vtnrsc.routerinterface.RouterInterfaceService;
import org.onosproject.vtnrsc.subnet.SubnetService;
import org.onosproject.vtnrsc.virtualport.VirtualPortService;
import org.slf4j.Logger;
import com.google.common.collect.Sets;
/**
* Provides implementation of the Router interface service.
*/
@Component(immediate = true)
@Service
public class RouterInterfaceManager implements RouterInterfaceService {
private static final String SUBNET_ID_NULL = "Subnet ID cannot be null";
private static final String ROUTER_INTERFACE_NULL = "Router Interface cannot be null";
private static final String ROUTER_INTERFACE = "vtn-router-interface-store";
private static final String VTNRSC_APP = "org.onosproject.vtnrsc";
private static final String LISTENER_NOT_NULL = "Listener cannot be null";
private static final String EVENT_NOT_NULL = "event cannot be null";
private final Logger log = getLogger(getClass());
private final Set<RouterInterfaceListener> listeners = Sets
.newCopyOnWriteArraySet();
private EventuallyConsistentMapListener<SubnetId, RouterInterface> routerInterfaceListener =
new InnerRouterInterfaceStoreListener();
protected EventuallyConsistentMap<SubnetId, RouterInterface> routerInterfaceStore;
protected ApplicationId appId;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected StorageService storageService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected CoreService coreService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected VirtualPortService virtualPortService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected SubnetService subnetService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected RouterService routerService;
@Activate
public void activate() {
appId = coreService.registerApplication(VTNRSC_APP);
KryoNamespace.Builder serializer = KryoNamespace
.newBuilder()
.register(KryoNamespaces.API)
.register(RouterId.class, TenantId.class, VirtualPortId.class,
RouterInterface.class, SubnetId.class);
routerInterfaceStore = storageService
.<SubnetId, RouterInterface>eventuallyConsistentMapBuilder()
.withName(ROUTER_INTERFACE).withSerializer(serializer)
.withTimestampProvider((k, v) -> new WallClockTimestamp())
.build();
routerInterfaceStore.addListener(routerInterfaceListener);
log.info("Started");
}
@Deactivate
public void deactivate() {
routerInterfaceStore.removeListener(routerInterfaceListener);
routerInterfaceStore.destroy();
listeners.clear();
log.info("Stopped");
}
@Override
public boolean exists(SubnetId subnetId) {
checkNotNull(subnetId, SUBNET_ID_NULL);
return routerInterfaceStore.containsKey(subnetId);
}
@Override
public Collection<RouterInterface> getRouterInterfaces() {
return Collections
.unmodifiableCollection(routerInterfaceStore.values());
}
@Override
public RouterInterface getRouterInterface(SubnetId subnetId) {
checkNotNull(subnetId, SUBNET_ID_NULL);
return routerInterfaceStore.get(subnetId);
}
@Override
public boolean addRouterInterface(RouterInterface routerInterface) {
checkNotNull(routerInterface, ROUTER_INTERFACE_NULL);
verifyRouterInterfaceData(routerInterface);
routerInterfaceStore.put(routerInterface.subnetId(), routerInterface);
if (!routerInterfaceStore.containsKey(routerInterface.subnetId())) {
log.debug("The router interface is created failed whose identifier is {}",
routerInterface.subnetId().toString());
return false;
}
return true;
}
@Override
public boolean removeRouterInterface(RouterInterface routerInterface) {
checkNotNull(routerInterface, ROUTER_INTERFACE_NULL);
if (!routerInterfaceStore.containsKey(routerInterface.subnetId())) {
log.debug("The router interface is not exist whose identifier is {}",
routerInterface.subnetId().toString());
throw new IllegalArgumentException("subnet ID doesn't exist");
}
verifyRouterInterfaceData(routerInterface);
routerInterfaceStore
.remove(routerInterface.subnetId(), routerInterface);
if (routerInterfaceStore.containsKey(routerInterface.subnetId())) {
log.debug("The router interface deleted is failed whose identifier is {}",
routerInterface.subnetId().toString());
return false;
}
return true;
}
@Override
public void addListener(RouterInterfaceListener listener) {
checkNotNull(listener, LISTENER_NOT_NULL);
listeners.add(listener);
}
@Override
public void removeListener(RouterInterfaceListener listener) {
checkNotNull(listener, LISTENER_NOT_NULL);
listeners.remove(listener);
}
/**
* Verifies validity of Router interface data.
*
* @param routers router instance
*/
private void verifyRouterInterfaceData(RouterInterface routerInterface) {
checkNotNull(routerInterface, ROUTER_INTERFACE_NULL);
if (!subnetService.exists(routerInterface.subnetId())) {
log.debug("The subnet ID of interface is not exist whose identifier is {}",
routerInterface.subnetId().toString());
throw new IllegalArgumentException(
"subnet ID of interface doesn't exist");
}
if (!virtualPortService.exists(routerInterface.portId())) {
log.debug("The port ID of interface is not exist whose identifier is {}",
routerInterface.portId().toString());
throw new IllegalArgumentException(
"port ID of interface doesn't exist");
}
if (!routerService.exists(routerInterface.routerId())) {
log.debug("The router ID of interface is not exist whose identifier is {}",
routerInterface.routerId().toString());
throw new IllegalArgumentException(
"router ID of interface doesn't exist");
}
}
private class InnerRouterInterfaceStoreListener
implements
EventuallyConsistentMapListener<SubnetId, RouterInterface> {
@Override
public void event(EventuallyConsistentMapEvent<SubnetId, RouterInterface> event) {
checkNotNull(event, EVENT_NOT_NULL);
RouterInterface routerInterface = event.value();
if (EventuallyConsistentMapEvent.Type.PUT == event.type()) {
notifyListeners(new RouterInterfaceEvent(
RouterInterfaceEvent.Type.ROUTER_INTERFACE_PUT,
routerInterface));
}
if (EventuallyConsistentMapEvent.Type.REMOVE == event.type()) {
notifyListeners(new RouterInterfaceEvent(
RouterInterfaceEvent.Type.ROUTER_INTERFACE_DELETE,
routerInterface));
}
}
}
/**
* Notifies specify event to all listeners.
*
* @param event Floating IP event
*/
private void notifyListeners(RouterInterfaceEvent event) {
checkNotNull(event, EVENT_NOT_NULL);
listeners.forEach(listener -> listener.event(event));
}
}
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