| package org.onlab.onos.cli.net; |
| |
| import org.apache.karaf.shell.commands.Argument; |
| import org.apache.karaf.shell.commands.Command; |
| import org.onlab.onos.net.Link; |
| import org.onlab.onos.net.Path; |
| |
| import java.util.Set; |
| |
| import static org.onlab.onos.cli.net.LinksListCommand.compactLinkString; |
| import static org.onlab.onos.net.DeviceId.deviceId; |
| |
| /** |
| * Lists all shortest-paths paths between the specified source and |
| * destination devices. |
| */ |
| @Command(scope = "onos", name = "paths", |
| description = "Lists all shortest-paths paths between the specified source and destination devices") |
| public class PathListCommand extends TopologyCommand { |
| |
| private static final String SEP = "==>"; |
| |
| @Argument(index = 0, name = "src", description = "Source device ID", |
| required = true, multiValued = false) |
| String src = null; |
| |
| @Argument(index = 1, name = "dst", description = "Destination device ID", |
| required = true, multiValued = false) |
| String dst = null; |
| |
| @Override |
| protected void execute() { |
| init(); |
| Set<Path> paths = service.getPaths(topology, deviceId(src), deviceId(dst)); |
| for (Path path : paths) { |
| print(pathString(path)); |
| } |
| } |
| |
| /** |
| * Produces a formatted string representing the specified path. |
| * |
| * @param path network path |
| * @return formatted path string |
| */ |
| protected String pathString(Path path) { |
| StringBuilder sb = new StringBuilder(); |
| for (Link link : path.links()) { |
| sb.append(compactLinkString(link)).append(SEP); |
| } |
| sb.delete(sb.lastIndexOf(SEP), sb.length()); |
| sb.append("; cost=").append(path.cost()); |
| return sb.toString(); |
| } |
| |
| } |