| /* |
| * 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.cli; |
| |
| import org.apache.karaf.shell.commands.Command; |
| import org.onosproject.cluster.ControllerNode; |
| import org.onosproject.store.service.DatabaseAdminService; |
| |
| import java.util.Optional; |
| |
| /** |
| * Lists mastership roles of nodes for each device. |
| */ |
| @Command(scope = "onos", name = "tablet-leader", |
| description = "Prints the current leader of a tablet.") |
| public class TabletLeaderCommand extends AbstractShellCommand { |
| |
| @Override |
| protected void execute() { |
| final DatabaseAdminService dbAdminService = get(DatabaseAdminService.class); |
| |
| Optional<ControllerNode> leader = dbAdminService.leader(); |
| if (leader.isPresent()) { |
| print("Leader: %s", leader.get()); |
| } else { |
| print("No Leader"); |
| } |
| } |
| } |