| /* |
| * 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.segmentrouting; |
| |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Link; |
| import org.onosproject.segmentrouting.grouphandler.NeighborSet; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Tunnel class. |
| */ |
| public class DefaultTunnel implements Tunnel { |
| |
| private static final Logger log = LoggerFactory |
| .getLogger(DefaultTunnel.class); |
| |
| private final String tunnelId; |
| private final List<Integer> labelIds; |
| private final SegmentRoutingManager srManager; |
| private final DeviceConfiguration config; |
| |
| private int groupId; |
| |
| /** |
| * Creates a Tunnel reference. |
| * |
| * @param srm SegmentRoutingManager object |
| * @param tid Tunnel ID |
| * @param labelIds Label stack of the tunnel |
| */ |
| public DefaultTunnel(SegmentRoutingManager srm, String tid, |
| List<Integer> labelIds) { |
| this.srManager = checkNotNull(srm); |
| this.tunnelId = checkNotNull(tid); |
| this.labelIds = Collections.unmodifiableList(labelIds); |
| this.config = srManager.deviceConfiguration; |
| this.groupId = -1; |
| } |
| |
| /** |
| * Creates a Tunnel reference. |
| * |
| * @param tid Tunnel ID |
| * @param labelIds Label stack of the tunnel |
| */ |
| public DefaultTunnel(String tid, List<Integer> labelIds) { |
| this.srManager = null; |
| this.tunnelId = checkNotNull(tid); |
| this.labelIds = Collections.unmodifiableList(labelIds); |
| this.config = null; |
| this.groupId = -1; |
| } |
| |
| /** |
| * Creates a new DefaultTunnel reference using the tunnel reference. |
| * |
| * @param tunnel DefaultTunnel reference |
| */ |
| public DefaultTunnel(DefaultTunnel tunnel) { |
| this.srManager = tunnel.srManager; |
| this.tunnelId = tunnel.tunnelId; |
| this.labelIds = tunnel.labelIds; |
| this.config = tunnel.config; |
| this.groupId = tunnel.groupId; |
| } |
| |
| @Override |
| public String id() { |
| return this.tunnelId; |
| } |
| |
| @Override |
| public List<Integer> labelIds() { |
| return this.labelIds; |
| } |
| |
| @Override |
| public boolean create() { |
| |
| if (labelIds.isEmpty() || labelIds.size() < 3) { |
| log.error("More than one router needs to specified to created a tunnel"); |
| return false; |
| } |
| |
| groupId = createGroupsForTunnel(); |
| if (groupId < 0) { |
| log.error("Failed to create groups for the tunnel"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public boolean remove() { |
| |
| DeviceId deviceId = config.getDeviceId(labelIds.get(0)); |
| srManager.removeNextObjective(deviceId, groupId); |
| |
| return true; |
| } |
| |
| @Override |
| public int groupId() { |
| return this.groupId; |
| } |
| |
| @Override |
| public DeviceId source() { |
| return config.getDeviceId(labelIds.get(0)); |
| } |
| |
| private int createGroupsForTunnel() { |
| |
| List<Integer> portNumbers; |
| |
| int groupId; |
| |
| DeviceId deviceId = config.getDeviceId(labelIds.get(0)); |
| if (deviceId == null) { |
| log.warn("No device found for SID {}", labelIds.get(0)); |
| return -1; |
| } |
| Set<DeviceId> deviceIds = new HashSet<>(); |
| int sid = labelIds.get(1); |
| if (config.isAdjacencySid(deviceId, sid)) { |
| portNumbers = config.getPortsForAdjacencySid(deviceId, sid); |
| for (Link link: srManager.linkService.getDeviceEgressLinks(deviceId)) { |
| for (Integer port: portNumbers) { |
| if (link.src().port().toLong() == port) { |
| deviceIds.add(link.dst().deviceId()); |
| } |
| } |
| } |
| } else { |
| deviceIds.add(config.getDeviceId(sid)); |
| } |
| |
| NeighborSet ns = new NeighborSet(deviceIds, labelIds.get(2)); |
| groupId = srManager.getNextObjectiveId(deviceId, ns); |
| |
| return groupId; |
| } |
| |
| } |