opendaylight/md-sal/sal-akka-raft-example/src/main/java/org/opendaylight/controller/cluster/example/Main.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.example;
   9
  10 import akka.actor.ActorRef;
  11 import akka.actor.ActorSystem;
  12 import akka.actor.PoisonPill;
  13 import java.io.BufferedReader;
  14 import java.io.InputStreamReader;
  15 import java.nio.charset.Charset;
  16 import java.util.Arrays;
  17 import java.util.HashMap;
  18 import java.util.List;
  19 import java.util.Map;
  20 import java.util.Optional;
  21 import org.opendaylight.controller.cluster.example.messages.KeyValue;
  22
  23 public final class Main {
  24     private static final ActorSystem ACTOR_SYSTEM = ActorSystem.create();
  25     // Create three example actors
  26     private static Map<String, String> allPeers = new HashMap<>();
  27
  28     static {
  29         allPeers.put("example-1", "akka://default/user/example-1");
  30         allPeers.put("example-2", "akka://default/user/example-2");
  31         allPeers.put("example-3", "akka://default/user/example-3");
  32     }
  33
  34     private Main() {
  35     }
  36
  37     @SuppressWarnings("checkstyle:RegexpSingleLineJava")
  38     public static void main(final String[] args) throws Exception {
  39         ActorRef example1Actor =
  40             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-1",
  41                 withoutPeer("example-1"), Optional.empty()), "example-1");
  42
  43         ActorRef example2Actor =
  44             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-2",
  45                 withoutPeer("example-2"), Optional.empty()), "example-2");
  46
  47         ActorRef example3Actor =
  48             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-3",
  49                 withoutPeer("example-3"), Optional.empty()), "example-3");
  50
  51
  52         List<ActorRef> examples = Arrays.asList(example1Actor, example2Actor, example3Actor);
  53
  54         ActorRef clientActor = ACTOR_SYSTEM.actorOf(ClientActor.props(example1Actor));
  55         BufferedReader br =
  56             new BufferedReader(new InputStreamReader(System.in, Charset.defaultCharset()));
  57
  58         System.out.println("Usage :");
  59         System.out.println("s <1-3> to start a peer");
  60         System.out.println("k <1-3> to kill a peer");
  61
  62         while (true) {
  63             System.out.print("Enter command (0 to exit):");
  64             try {
  65                 String line = br.readLine();
  66                 if (line == null) {
  67                     continue;
  68                 }
  69                 String[] split = line.split(" ");
  70                 if (split.length > 1) {
  71                     String command = split[0];
  72                     String actor = split[1];
  73
  74                     if ("k".equals(command)) {
  75                         int num = Integer.parseInt(actor);
  76                         examples.get(num - 1).tell(PoisonPill.getInstance(), null);
  77                         continue;
  78                     } else if ("s".equals(command)) {
  79                         int num = Integer.parseInt(actor);
  80                         String actorName = "example-" + num;
  81                         examples.add(num - 1,
  82                             ACTOR_SYSTEM.actorOf(ExampleActor.props(actorName,
  83                                 withoutPeer(actorName), Optional.empty()), actorName));
  84                         System.out.println("Created actor : " + actorName);
  85                         continue;
  86                     }
  87                 }
  88
  89                 int num = Integer.parseInt(line);
  90                 if (num == 0) {
  91                     System.exit(0);
  92                 }
  93                 clientActor.tell(new KeyValue("key " + num, "value " + num), null);
  94             } catch (NumberFormatException nfe) {
  95                 System.err.println("Invalid Format!");
  96             }
  97         }
  98     }
  99
 100     private static Map<String, String> withoutPeer(final String peerId) {
 101         Map<String, String> without = new HashMap<>(allPeers);
 102         without.remove(peerId);
 103         return without;
 104     }
 105 }