| package org.onlab.onos.cli.net; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.node.ArrayNode; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import org.apache.karaf.shell.commands.Command; |
| import org.onlab.onos.cli.AbstractShellCommand; |
| import org.onlab.onos.cli.Comparators; |
| import org.onlab.onos.net.Host; |
| import org.onlab.onos.net.host.HostService; |
| import org.onlab.packet.IpPrefix; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import static com.google.common.collect.Lists.newArrayList; |
| |
| /** |
| * Lists all currently-known hosts. |
| */ |
| @Command(scope = "onos", name = "hosts", |
| description = "Lists all currently-known hosts.") |
| public class HostsListCommand extends AbstractShellCommand { |
| |
| private static final String FMT = |
| "id=%s, mac=%s, location=%s/%s, vlan=%s, ip(s)=%s"; |
| |
| @Override |
| protected void execute() { |
| HostService service = get(HostService.class); |
| if (outputJson()) { |
| print("%s", json(getSortedHosts(service))); |
| } else { |
| for (Host host : getSortedHosts(service)) { |
| printHost(host); |
| } |
| } |
| } |
| |
| // Produces JSON structure. |
| private static JsonNode json(Iterable<Host> hosts) { |
| ObjectMapper mapper = new ObjectMapper(); |
| ArrayNode result = mapper.createArrayNode(); |
| for (Host host : hosts) { |
| result.add(json(mapper, host)); |
| } |
| return result; |
| } |
| |
| // Produces JSON structure. |
| private static JsonNode json(ObjectMapper mapper, Host host) { |
| ObjectNode loc = LinksListCommand.json(mapper, host.location()) |
| .put("time", host.location().time()); |
| ArrayNode ips = mapper.createArrayNode(); |
| for (IpPrefix ip : host.ipAddresses()) { |
| ips.add(ip.toString()); |
| } |
| ObjectNode result = mapper.createObjectNode() |
| .put("id", host.id().toString()) |
| .put("mac", host.mac().toString()) |
| .put("vlan", host.vlan().toString()); |
| result.set("location", loc); |
| result.set("ips", ips); |
| return result; |
| } |
| |
| /** |
| * Returns the list of devices sorted using the device ID URIs. |
| * |
| * @param service device service |
| * @return sorted device list |
| */ |
| protected List<Host> getSortedHosts(HostService service) { |
| List<Host> hosts = newArrayList(service.getHosts()); |
| Collections.sort(hosts, Comparators.ELEMENT_COMPARATOR); |
| return hosts; |
| } |
| |
| /** |
| * Prints information about a host. |
| * |
| * @param host end-station host |
| */ |
| protected void printHost(Host host) { |
| if (host != null) { |
| print(FMT, host.id(), host.mac(), |
| host.location().deviceId(), |
| host.location().port(), |
| host.vlan(), host.ipAddresses()); |
| } |
| } |
| } |