Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 16 | package org.onosproject.cli.net; |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 17 | |
| 18 | import org.apache.karaf.shell.commands.Command; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 19 | import org.onosproject.cli.AbstractShellCommand; |
| 20 | import org.onosproject.cluster.Leadership; |
| 21 | import org.onosproject.cluster.LeadershipService; |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 22 | |
Jonathan Hart | f2fda81 | 2015-02-17 15:21:03 -0800 | [diff] [blame] | 23 | import java.util.Comparator; |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 24 | import java.util.Map; |
| 25 | |
| 26 | /** |
| 27 | * Prints the leader for every topic. |
| 28 | */ |
| 29 | @Command(scope = "onos", name = "leaders", |
| 30 | description = "Finds the leader for particular topic.") |
| 31 | public class LeaderCommand extends AbstractShellCommand { |
| 32 | |
Jonathan Hart | f2fda81 | 2015-02-17 15:21:03 -0800 | [diff] [blame] | 33 | private static final String FMT = "%-20s: %15s %15s"; |
Brian O'Connor | a0d3100 | 2014-12-01 13:43:18 -0800 | [diff] [blame] | 34 | |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 35 | @Override |
| 36 | protected void execute() { |
| 37 | LeadershipService leaderService = get(LeadershipService.class); |
| 38 | Map<String, Leadership> leaderBoard = leaderService.getLeaderBoard(); |
Jonathan Hart | 82b9fec | 2015-02-03 16:18:54 -0800 | [diff] [blame] | 39 | print(FMT, "Topic", "Leader", "Epoch"); |
Jonathan Hart | f2fda81 | 2015-02-17 15:21:03 -0800 | [diff] [blame] | 40 | |
| 41 | Comparator<Leadership> leadershipComparator = |
| 42 | (e1, e2) -> { |
| 43 | if (e1.leader() == null && e2.leader() == null) { |
| 44 | return 0; |
| 45 | } |
| 46 | if (e1.leader() == null) { |
| 47 | return 1; |
| 48 | } |
| 49 | if (e2.leader() == null) { |
| 50 | return -1; |
| 51 | } |
| 52 | return e1.leader().toString().compareTo(e2.leader().toString()); |
| 53 | }; |
| 54 | |
| 55 | leaderBoard.values() |
| 56 | .stream() |
| 57 | .sorted(leadershipComparator) |
| 58 | .forEach(l -> print(FMT, l.topic(), l.leader(), l.epoch())); |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | } |