Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 1 | /* |
Ray Milkey | 34c9590 | 2015-04-15 09:47:53 -0700 | [diff] [blame] | 2 | * Copyright 2014-2015 Open Networking Laboratory |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 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; |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 19 | import java.util.List; |
Madan Jampani | fd45d5e | 2015-04-20 13:33:21 -0700 | [diff] [blame] | 20 | import java.util.Map; |
Ayaka Koshibe | 941f860 | 2015-04-15 14:17:08 -0700 | [diff] [blame] | 21 | import java.util.regex.Pattern; |
Madan Jampani | a14047d | 2015-02-25 12:23:02 -0800 | [diff] [blame] | 22 | |
Ayaka Koshibe | 941f860 | 2015-04-15 14:17:08 -0700 | [diff] [blame] | 23 | import org.apache.karaf.shell.commands.Argument; |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 24 | import org.apache.karaf.shell.commands.Command; |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 25 | import org.apache.karaf.shell.commands.Option; |
Madan Jampani | 30a57f8 | 2015-03-02 12:19:41 -0800 | [diff] [blame] | 26 | import org.onlab.util.Tools; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 27 | import org.onosproject.cli.AbstractShellCommand; |
| 28 | import org.onosproject.cluster.Leadership; |
| 29 | import org.onosproject.cluster.LeadershipService; |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 30 | import org.onosproject.cluster.NodeId; |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 31 | |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 32 | import com.fasterxml.jackson.databind.JsonNode; |
| 33 | import com.fasterxml.jackson.databind.ObjectMapper; |
| 34 | import com.fasterxml.jackson.databind.node.ArrayNode; |
| 35 | |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 36 | /** |
| 37 | * Prints the leader for every topic. |
| 38 | */ |
| 39 | @Command(scope = "onos", name = "leaders", |
| 40 | description = "Finds the leader for particular topic.") |
| 41 | public class LeaderCommand extends AbstractShellCommand { |
| 42 | |
Madan Jampani | 5756c35 | 2015-04-29 00:23:58 -0700 | [diff] [blame] | 43 | private static final String FMT = "%-30s | %-15s | %-6s | %-10s |"; |
| 44 | private static final String FMT_C = "%-30s | %-15s | %-19s |"; |
Ayaka Koshibe | 941f860 | 2015-04-15 14:17:08 -0700 | [diff] [blame] | 45 | private boolean allTopics; |
| 46 | private Pattern pattern; |
| 47 | |
| 48 | @Argument(index = 0, name = "topic", description = "A leadership topic. Can be a regex", |
| 49 | required = false, multiValued = false) |
| 50 | String topicPattern = null; |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 51 | |
| 52 | @Option(name = "-c", aliases = "--candidates", |
| 53 | description = "List candidate Nodes for each topic's leadership race", |
| 54 | required = false, multiValued = false) |
| 55 | private boolean showCandidates = false; |
Brian O'Connor | a0d3100 | 2014-12-01 13:43:18 -0800 | [diff] [blame] | 56 | |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 57 | /** |
| 58 | * Compares leaders, sorting by toString() output. |
| 59 | */ |
| 60 | private Comparator<Leadership> leadershipComparator = |
| 61 | (e1, e2) -> { |
| 62 | if (e1.leader() == null && e2.leader() == null) { |
| 63 | return 0; |
| 64 | } |
| 65 | if (e1.leader() == null) { |
| 66 | return 1; |
| 67 | } |
| 68 | if (e2.leader() == null) { |
| 69 | return -1; |
| 70 | } |
| 71 | return e1.leader().toString().compareTo(e2.leader().toString()); |
| 72 | }; |
| 73 | |
| 74 | /** |
| 75 | * Displays text representing the leaders. |
| 76 | * |
| 77 | * @param leaderBoard map of leaders |
| 78 | */ |
| 79 | private void displayLeaders(Map<String, Leadership> leaderBoard) { |
Madan Jampani | 5756c35 | 2015-04-29 00:23:58 -0700 | [diff] [blame] | 80 | print("------------------------------------------------------------------------"); |
Madan Jampani | 30a57f8 | 2015-03-02 12:19:41 -0800 | [diff] [blame] | 81 | print(FMT, "Topic", "Leader", "Epoch", "Elected"); |
Madan Jampani | 5756c35 | 2015-04-29 00:23:58 -0700 | [diff] [blame] | 82 | print("------------------------------------------------------------------------"); |
Madan Jampani | 30a57f8 | 2015-03-02 12:19:41 -0800 | [diff] [blame] | 83 | |
Jonathan Hart | f2fda81 | 2015-02-17 15:21:03 -0800 | [diff] [blame] | 84 | leaderBoard.values() |
| 85 | .stream() |
Ayaka Koshibe | 941f860 | 2015-04-15 14:17:08 -0700 | [diff] [blame] | 86 | .filter(l -> allTopics || pattern.matcher(l.topic()).matches()) |
Jonathan Hart | f2fda81 | 2015-02-17 15:21:03 -0800 | [diff] [blame] | 87 | .sorted(leadershipComparator) |
Madan Jampani | 30a57f8 | 2015-03-02 12:19:41 -0800 | [diff] [blame] | 88 | .forEach(l -> print(FMT, |
| 89 | l.topic(), |
| 90 | l.leader(), |
| 91 | l.epoch(), |
| 92 | Tools.timeAgo(l.electedTime()))); |
Madan Jampani | 5756c35 | 2015-04-29 00:23:58 -0700 | [diff] [blame] | 93 | print("------------------------------------------------------------------------"); |
Yuta HIGUCHI | c2bf3d8 | 2014-11-28 18:50:41 -0800 | [diff] [blame] | 94 | } |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 95 | |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 96 | private void displayCandidates(Map<String, Leadership> leaderBoard, |
Madan Jampani | fd45d5e | 2015-04-20 13:33:21 -0700 | [diff] [blame] | 97 | Map<String, List<NodeId>> candidates) { |
Madan Jampani | 5756c35 | 2015-04-29 00:23:58 -0700 | [diff] [blame] | 98 | print("------------------------------------------------------------------------"); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 99 | print(FMT_C, "Topic", "Leader", "Candidates"); |
Madan Jampani | 5756c35 | 2015-04-29 00:23:58 -0700 | [diff] [blame] | 100 | print("------------------------------------------------------------------------"); |
Ayaka Koshibe | 0d886fc | 2015-04-23 11:53:41 -0700 | [diff] [blame] | 101 | candidates |
| 102 | .entrySet() |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 103 | .stream() |
Ayaka Koshibe | 0d886fc | 2015-04-23 11:53:41 -0700 | [diff] [blame] | 104 | .filter(es -> allTopics || pattern.matcher(es.getKey()).matches()) |
| 105 | .forEach(es -> { |
| 106 | List<NodeId> list = es.getValue(); |
| 107 | if (list == null || list.isEmpty()) { |
| 108 | return; |
| 109 | } |
| 110 | Leadership l = leaderBoard.get(es.getKey()); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 111 | print(FMT_C, |
Ayaka Koshibe | 0d886fc | 2015-04-23 11:53:41 -0700 | [diff] [blame] | 112 | es.getKey(), |
| 113 | l == null ? "null" : l.leader(), |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 114 | // formatting hacks to get it into a table |
Ayaka Koshibe | 0d886fc | 2015-04-23 11:53:41 -0700 | [diff] [blame] | 115 | list.get(0).toString()); |
Ayaka Koshibe | fd26a30 | 2015-04-13 13:59:54 -0700 | [diff] [blame] | 116 | list.subList(1, list.size()).forEach(n -> print(FMT_C, " ", " ", n)); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 117 | print(FMT_C, " ", " ", " "); |
| 118 | }); |
Madan Jampani | 5756c35 | 2015-04-29 00:23:58 -0700 | [diff] [blame] | 119 | print("------------------------------------------------------------------------"); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 120 | } |
| 121 | |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 122 | /** |
| 123 | * Returns JSON node representing the leaders. |
| 124 | * |
| 125 | * @param leaderBoard map of leaders |
| 126 | */ |
| 127 | private JsonNode json(Map<String, Leadership> leaderBoard) { |
| 128 | ObjectMapper mapper = new ObjectMapper(); |
| 129 | ArrayNode result = mapper.createArrayNode(); |
| 130 | leaderBoard.values() |
| 131 | .stream() |
| 132 | .sorted(leadershipComparator) |
| 133 | .forEach(l -> |
| 134 | result.add( |
| 135 | mapper.createObjectNode() |
| 136 | .put("topic", l.topic()) |
| 137 | .put("leader", l.leader().toString()) |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 138 | .put("candidates", l.candidates().toString()) |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 139 | .put("epoch", l.epoch()) |
| 140 | .put("electedTime", Tools.timeAgo(l.electedTime())))); |
| 141 | |
| 142 | return result; |
| 143 | } |
| 144 | |
Ayaka Koshibe | 0d886fc | 2015-04-23 11:53:41 -0700 | [diff] [blame] | 145 | /** |
| 146 | * Returns JSON node representing the leaders. |
| 147 | * |
| 148 | * @param leaderBoard map of leaders |
| 149 | */ |
| 150 | private JsonNode json(Map<String, Leadership> leaderBoard, |
| 151 | Map<String, List<NodeId>> candidateBoard) { |
| 152 | ObjectMapper mapper = new ObjectMapper(); |
| 153 | ArrayNode result = mapper.createArrayNode(); |
| 154 | candidateBoard.entrySet() |
| 155 | .stream() |
| 156 | .forEach(es -> { |
| 157 | Leadership l = leaderBoard.get(es.getKey()); |
| 158 | result.add( |
| 159 | mapper.createObjectNode() |
| 160 | .put("topic", es.getKey()) |
| 161 | .put("leader", l == null ? "none" : l.leader().toString()) |
| 162 | .put("candidates", es.getValue().toString())); |
| 163 | }); |
| 164 | return result; |
| 165 | } |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 166 | |
| 167 | @Override |
| 168 | protected void execute() { |
| 169 | LeadershipService leaderService = get(LeadershipService.class); |
| 170 | Map<String, Leadership> leaderBoard = leaderService.getLeaderBoard(); |
Ayaka Koshibe | 941f860 | 2015-04-15 14:17:08 -0700 | [diff] [blame] | 171 | if (topicPattern == null) { |
| 172 | allTopics = true; |
| 173 | } else { |
| 174 | allTopics = false; |
| 175 | pattern = Pattern.compile(topicPattern); |
| 176 | } |
| 177 | |
Ayaka Koshibe | 0d886fc | 2015-04-23 11:53:41 -0700 | [diff] [blame] | 178 | if (showCandidates) { |
| 179 | Map<String, List<NodeId>> candidates = leaderService |
| 180 | .getCandidates(); |
| 181 | if (outputJson()) { |
| 182 | print("%s", json(leaderBoard, candidates)); |
| 183 | } else { |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 184 | displayCandidates(leaderBoard, candidates); |
Ayaka Koshibe | 0d886fc | 2015-04-23 11:53:41 -0700 | [diff] [blame] | 185 | } |
| 186 | } else { |
| 187 | if (outputJson()) { |
| 188 | print("%s", json(leaderBoard)); |
Ayaka Koshibe | c19b8b8 | 2015-04-08 15:18:24 -0700 | [diff] [blame] | 189 | } else { |
| 190 | displayLeaders(leaderBoard); |
| 191 | } |
Ray Milkey | 1c198d6 | 2015-03-04 14:03:52 -0800 | [diff] [blame] | 192 | } |
| 193 | } |
| 194 | } |