| package org.onlab.onos.cli; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.node.ArrayNode; |
| import com.google.common.collect.Lists; |
| import org.apache.karaf.shell.commands.Command; |
| import org.onlab.onos.cluster.ClusterService; |
| import org.onlab.onos.cluster.ControllerNode; |
| import org.onlab.onos.mastership.MastershipService; |
| import org.onlab.onos.net.DeviceId; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import static com.google.common.collect.Lists.newArrayList; |
| |
| /** |
| * Lists device mastership information. |
| */ |
| @Command(scope = "onos", name = "masters", |
| description = "Lists device mastership information") |
| public class MastersListCommand extends AbstractShellCommand { |
| |
| @Override |
| protected void execute() { |
| ClusterService service = get(ClusterService.class); |
| MastershipService mastershipService = get(MastershipService.class); |
| List<ControllerNode> nodes = newArrayList(service.getNodes()); |
| Collections.sort(nodes, Comparators.NODE_COMPARATOR); |
| |
| if (outputJson()) { |
| print("%s", json(service, mastershipService, nodes)); |
| } else { |
| for (ControllerNode node : nodes) { |
| List<DeviceId> ids = Lists.newArrayList(mastershipService.getDevicesOf(node.id())); |
| Collections.sort(ids, Comparators.ELEMENT_ID_COMPARATOR); |
| print("%s: %d devices", node.id(), ids.size()); |
| for (DeviceId deviceId : ids) { |
| print(" %s", deviceId); |
| } |
| } |
| } |
| } |
| |
| // Produces JSON structure. |
| private JsonNode json(ClusterService service, MastershipService mastershipService, |
| List<ControllerNode> nodes) { |
| ObjectMapper mapper = new ObjectMapper(); |
| ArrayNode result = mapper.createArrayNode(); |
| ControllerNode self = service.getLocalNode(); |
| for (ControllerNode node : nodes) { |
| List<DeviceId> ids = Lists.newArrayList(mastershipService.getDevicesOf(node.id())); |
| result.add(mapper.createObjectNode() |
| .put("id", node.id().toString()) |
| .put("size", ids.size()) |
| .set("devices", json(mapper, ids))); |
| } |
| return result; |
| } |
| |
| /** |
| * Produces a JSON array containing the specified device identifiers. |
| * |
| * @param mapper object mapper |
| * @param ids collection of device identifiers |
| * @return JSON array |
| */ |
| public static JsonNode json(ObjectMapper mapper, Iterable<DeviceId> ids) { |
| ArrayNode result = mapper.createArrayNode(); |
| for (DeviceId deviceId : ids) { |
| result.add(deviceId.toString()); |
| } |
| return result; |
| } |
| |
| } |