| /* |
| * Copyright 2014 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.net.edgeservice.impl; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Sets; |
| 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.event.AbstractListenerManager; |
| import org.onosproject.event.Event; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.device.DeviceEvent; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.edge.EdgePortEvent; |
| import org.onosproject.net.edge.EdgePortListener; |
| import org.onosproject.net.edge.EdgePortService; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.link.LinkEvent; |
| import org.onosproject.net.packet.DefaultOutboundPacket; |
| import org.onosproject.net.packet.OutboundPacket; |
| import org.onosproject.net.packet.PacketService; |
| import org.onosproject.net.topology.Topology; |
| import org.onosproject.net.topology.TopologyEvent; |
| import org.onosproject.net.topology.TopologyListener; |
| import org.onosproject.net.topology.TopologyService; |
| import org.slf4j.Logger; |
| |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| |
| import static org.onosproject.net.device.DeviceEvent.Type.*; |
| import static org.onosproject.net.edge.EdgePortEvent.Type.EDGE_PORT_ADDED; |
| import static org.onosproject.net.edge.EdgePortEvent.Type.EDGE_PORT_REMOVED; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * This is an implementation of the edge net service. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class EdgeManager |
| extends AbstractListenerManager<EdgePortEvent, EdgePortListener> |
| implements EdgePortService { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private Topology topology; |
| |
| private final Map<DeviceId, Set<ConnectPoint>> connectionPoints = Maps.newConcurrentMap(); |
| |
| private final TopologyListener topologyListener = new InnerTopologyListener(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketService packetService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected TopologyService topologyService; |
| |
| @Activate |
| public void activate() { |
| eventDispatcher.addSink(EdgePortEvent.class, listenerRegistry); |
| topologyService.addListener(topologyListener); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| eventDispatcher.removeSink(EdgePortEvent.class); |
| topologyService.removeListener(topologyListener); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public boolean isEdgePoint(ConnectPoint point) { |
| return !topologyService.isInfrastructure(topologyService.currentTopology(), point); |
| } |
| |
| @Override |
| public Iterable<ConnectPoint> getEdgePoints() { |
| ImmutableSet.Builder<ConnectPoint> builder = ImmutableSet.builder(); |
| connectionPoints.forEach((k, v) -> v.forEach(builder::add)); |
| return builder.build(); |
| } |
| |
| @Override |
| public Iterable<ConnectPoint> getEdgePoints(DeviceId deviceId) { |
| ImmutableSet.Builder<ConnectPoint> builder = ImmutableSet.builder(); |
| Set<ConnectPoint> set = connectionPoints.get(deviceId); |
| if (set != null) { |
| set.forEach(builder::add); |
| } |
| return builder.build(); |
| } |
| |
| @Override |
| public void emitPacket(ByteBuffer data, Optional<TrafficTreatment> treatment) { |
| TrafficTreatment.Builder builder = treatment.isPresent() ? |
| DefaultTrafficTreatment.builder(treatment.get()) : |
| DefaultTrafficTreatment.builder(); |
| getEdgePoints().forEach(p -> packetService.emit(packet(builder, p, data))); |
| } |
| |
| @Override |
| public void emitPacket(DeviceId deviceId, ByteBuffer data, |
| Optional<TrafficTreatment> treatment) { |
| TrafficTreatment.Builder builder = treatment.isPresent() ? |
| DefaultTrafficTreatment.builder(treatment.get()) : |
| DefaultTrafficTreatment.builder(); |
| getEdgePoints(deviceId).forEach(p -> packetService.emit(packet(builder, p, data))); |
| } |
| |
| private OutboundPacket packet(TrafficTreatment.Builder builder, ConnectPoint point, ByteBuffer data) { |
| builder.setOutput(point.port()); |
| return new DefaultOutboundPacket(point.deviceId(), builder.build(), data); |
| } |
| |
| // Internal listener for topo events used to keep our edge-port cache |
| // up to date. |
| private class InnerTopologyListener implements TopologyListener { |
| @Override |
| public void event(TopologyEvent event) { |
| topology = event.subject(); |
| List<Event> triggers = event.reasons(); |
| if (triggers != null) { |
| triggers.forEach(reason -> { |
| if (reason instanceof DeviceEvent) { |
| processDeviceEvent((DeviceEvent) reason); |
| } else if (reason instanceof LinkEvent) { |
| processLinkEvent((LinkEvent) reason); |
| } |
| }); |
| } else { |
| //FIXME special case of preexisting edgeport & no triggerless events could cause this to never hit and |
| //never discover an edgeport that should have been discovered. |
| loadAllEdgePorts(); |
| } |
| } |
| } |
| |
| // Initial loading of the edge port cache. |
| private void loadAllEdgePorts() { |
| deviceService.getAvailableDevices().forEach(d -> deviceService.getPorts(d.id()) |
| .forEach(p -> addEdgePort(new ConnectPoint(d.id(), p.number())))); |
| } |
| |
| // Processes a link event by adding or removing its end-points in our cache. |
| private void processLinkEvent(LinkEvent event) { |
| if (event.type() == LinkEvent.Type.LINK_ADDED) { |
| removeEdgePort(event.subject().src()); |
| removeEdgePort(event.subject().dst()); |
| } else if (event.type() == LinkEvent.Type.LINK_REMOVED) { |
| addEdgePort(event.subject().src()); |
| addEdgePort(event.subject().dst()); |
| } |
| } |
| |
| // Processes a device event by adding or removing its end-points in our cache. |
| private void processDeviceEvent(DeviceEvent event) { |
| //FIXME handle the case where a device is suspended, this may or may not come up |
| DeviceEvent.Type type = event.type(); |
| DeviceId id = event.subject().id(); |
| |
| if (type == DEVICE_ADDED || |
| type == DEVICE_AVAILABILITY_CHANGED && deviceService.isAvailable(id)) { |
| // When device is added or becomes available, add all its ports |
| deviceService.getPorts(event.subject().id()) |
| .forEach(p -> addEdgePort(new ConnectPoint(id, p.number()))); |
| } else if (type == DEVICE_REMOVED || |
| type == DEVICE_AVAILABILITY_CHANGED && !deviceService.isAvailable(id)) { |
| // When device is removed or becomes unavailable, remove all its ports |
| deviceService.getPorts(event.subject().id()) |
| .forEach(p -> removeEdgePort(new ConnectPoint(id, p.number()))); |
| connectionPoints.remove(id); |
| |
| } else if (type == DeviceEvent.Type.PORT_ADDED || |
| type == PORT_UPDATED && event.port().isEnabled()) { |
| addEdgePort(new ConnectPoint(id, event.port().number())); |
| } else if (type == DeviceEvent.Type.PORT_REMOVED || |
| type == PORT_UPDATED && !event.port().isEnabled()) { |
| removeEdgePort(new ConnectPoint(id, event.port().number())); |
| } |
| } |
| |
| // Adds the specified connection point to the edge points if needed. |
| private void addEdgePort(ConnectPoint point) { |
| if (!topologyService.isInfrastructure(topology, point) && !point.port().isLogical()) { |
| Set<ConnectPoint> set = connectionPoints.get(point.deviceId()); |
| if (set == null) { |
| set = Sets.newConcurrentHashSet(); |
| connectionPoints.put(point.deviceId(), set); |
| } |
| if (set.add(point)) { |
| post(new EdgePortEvent(EDGE_PORT_ADDED, point)); |
| } |
| } |
| } |
| |
| // Removes the specified connection point from the edge points. |
| private void removeEdgePort(ConnectPoint point) { |
| if (!point.port().isLogical()) { |
| Set<ConnectPoint> set = connectionPoints.get(point.deviceId()); |
| if (set == null) { |
| return; |
| } |
| if (set.remove(point)) { |
| post(new EdgePortEvent(EDGE_PORT_REMOVED, point)); |
| } |
| if (set.isEmpty()) { |
| connectionPoints.remove(point.deviceId()); |
| } |
| } |
| } |
| } |