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 | |
Madan Jampani | a14047d | 2015-02-25 12:23:02 -0800 | [diff] [blame] | 18 | import java.util.Comparator; |
| 19 | import java.util.Map; |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 20 | import java.util.List; |
Madan Jampani | a14047d | 2015-02-25 12:23:02 -0800 | [diff] [blame] | 21 | |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 22 | import org.apache.karaf.shell.commands.Command; |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 23 | import org.apache.karaf.shell.commands.Option; |
Madan Jampani | 30a57f8 | 2015-03-02 12:19:41 -0800 | [diff] [blame] | 24 | import org.onlab.util.Tools; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 25 | import org.onosproject.cli.AbstractShellCommand; |
| 26 | import org.onosproject.cluster.Leadership; |
| 27 | import org.onosproject.cluster.LeadershipService; |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 28 | import org.onosproject.cluster.NodeId; |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 29 | |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 30 | import com.fasterxml.jackson.databind.JsonNode; |
| 31 | import com.fasterxml.jackson.databind.ObjectMapper; |
| 32 | import com.fasterxml.jackson.databind.node.ArrayNode; |
| 33 | |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 34 | /** |
| 35 | * Prints the leader for every topic. |
| 36 | */ |
| 37 | @Command(scope = "onos", name = "leaders", |
| 38 | description = "Finds the leader for particular topic.") |
| 39 | public class LeaderCommand extends AbstractShellCommand { |
| 40 | |
Madan Jampani | 30a57f8 | 2015-03-02 12:19:41 -0800 | [diff] [blame] | 41 | private static final String FMT = "%-20s | %-15s | %-6s | %-10s |"; |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 42 | private static final String FMT_C = "%-20s | %-15s | %-19s |"; |
| 43 | |
| 44 | @Option(name = "-c", aliases = "--candidates", |
| 45 | description = "List candidate Nodes for each topic's leadership race", |
| 46 | required = false, multiValued = false) |
| 47 | private boolean showCandidates = false; |
Brian O'Connor | a0d3100 | 2014-12-01 13:43:18 -0800 | [diff] [blame] | 48 | |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 49 | /** |
| 50 | * Compares leaders, sorting by toString() output. |
| 51 | */ |
| 52 | private Comparator<Leadership> leadershipComparator = |
| 53 | (e1, e2) -> { |
| 54 | if (e1.leader() == null && e2.leader() == null) { |
| 55 | return 0; |
| 56 | } |
| 57 | if (e1.leader() == null) { |
| 58 | return 1; |
| 59 | } |
| 60 | if (e2.leader() == null) { |
| 61 | return -1; |
| 62 | } |
| 63 | return e1.leader().toString().compareTo(e2.leader().toString()); |
| 64 | }; |
| 65 | |
| 66 | /** |
| 67 | * Displays text representing the leaders. |
| 68 | * |
| 69 | * @param leaderBoard map of leaders |
| 70 | */ |
| 71 | private void displayLeaders(Map<String, Leadership> leaderBoard) { |
Madan Jampani | 30a57f8 | 2015-03-02 12:19:41 -0800 | [diff] [blame] | 72 | print("--------------------------------------------------------------"); |
| 73 | print(FMT, "Topic", "Leader", "Epoch", "Elected"); |
| 74 | print("--------------------------------------------------------------"); |
| 75 | |
Jonathan Hart | f2fda81 | 2015-02-17 15:21:03 -0800 | [diff] [blame] | 76 | leaderBoard.values() |
| 77 | .stream() |
| 78 | .sorted(leadershipComparator) |
Madan Jampani | 30a57f8 | 2015-03-02 12:19:41 -0800 | [diff] [blame] | 79 | .forEach(l -> print(FMT, |
| 80 | l.topic(), |
| 81 | l.leader(), |
| 82 | l.epoch(), |
| 83 | Tools.timeAgo(l.electedTime()))); |
| 84 | print("--------------------------------------------------------------"); |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 85 | } |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 86 | |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 87 | private void displayCandidates(Map<String, Leadership> leaderBoard, |
Ayaka Koshibe | fd26a30 | 2015-04-13 13:59:54 -0700 | [diff] [blame] | 88 | Map<String, Leadership> candidates) { |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 89 | print("--------------------------------------------------------------"); |
| 90 | print(FMT_C, "Topic", "Leader", "Candidates"); |
| 91 | print("--------------------------------------------------------------"); |
| 92 | leaderBoard |
| 93 | .values() |
| 94 | .stream() |
| 95 | .sorted(leadershipComparator) |
| 96 | .forEach(l -> { |
Ayaka Koshibe | fd26a30 | 2015-04-13 13:59:54 -0700 | [diff] [blame] | 97 | List<NodeId> list = candidates.get(l.topic()).candidates(); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 98 | print(FMT_C, |
| 99 | l.topic(), |
| 100 | l.leader(), |
Ayaka Koshibe | fd26a30 | 2015-04-13 13:59:54 -0700 | [diff] [blame] | 101 | list.get(0).toString()); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 102 | // formatting hacks to get it into a table |
Ayaka Koshibe | fd26a30 | 2015-04-13 13:59:54 -0700 | [diff] [blame] | 103 | list.subList(1, list.size()).forEach(n -> print(FMT_C, " ", " ", n)); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 104 | print(FMT_C, " ", " ", " "); |
| 105 | }); |
| 106 | print("--------------------------------------------------------------"); |
| 107 | } |
| 108 | |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 109 | /** |
| 110 | * Returns JSON node representing the leaders. |
| 111 | * |
| 112 | * @param leaderBoard map of leaders |
| 113 | */ |
| 114 | private JsonNode json(Map<String, Leadership> leaderBoard) { |
| 115 | ObjectMapper mapper = new ObjectMapper(); |
| 116 | ArrayNode result = mapper.createArrayNode(); |
| 117 | leaderBoard.values() |
| 118 | .stream() |
| 119 | .sorted(leadershipComparator) |
| 120 | .forEach(l -> |
| 121 | result.add( |
| 122 | mapper.createObjectNode() |
| 123 | .put("topic", l.topic()) |
| 124 | .put("leader", l.leader().toString()) |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 125 | .put("candidates", l.candidates().toString()) |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 126 | .put("epoch", l.epoch()) |
| 127 | .put("electedTime", Tools.timeAgo(l.electedTime())))); |
| 128 | |
| 129 | return result; |
| 130 | } |
| 131 | |
| 132 | |
| 133 | @Override |
| 134 | protected void execute() { |
| 135 | LeadershipService leaderService = get(LeadershipService.class); |
| 136 | Map<String, Leadership> leaderBoard = leaderService.getLeaderBoard(); |
| 137 | |
| 138 | if (outputJson()) { |
| 139 | print("%s", json(leaderBoard)); |
| 140 | } else { |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 141 | if (showCandidates) { |
Ayaka Koshibe | fd26a30 | 2015-04-13 13:59:54 -0700 | [diff] [blame] | 142 | Map<String, Leadership> candidates = leaderService.getCandidates(); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 143 | displayCandidates(leaderBoard, candidates); |
| 144 | } else { |
| 145 | displayLeaders(leaderBoard); |
| 146 | } |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 147 | } |
| 148 | } |
| 149 | } |