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
   9 package org.opendaylight.controller.cluster.example;
  10
  11 import akka.actor.ActorRef;
  12 import akka.actor.ActorSystem;
  13 import akka.actor.PoisonPill;
  14 import com.google.common.base.Optional;
  15 import java.io.BufferedReader;
  16 import java.io.InputStreamReader;
  17 import java.nio.charset.Charset;
  18 import java.util.Arrays;
  19 import java.util.HashMap;
  20 import java.util.List;
  21 import java.util.Map;
  22 import org.opendaylight.controller.cluster.example.messages.KeyValue;
  23 import org.opendaylight.controller.cluster.raft.ConfigParams;
  24
  25 public final class Main {
  26     private static final ActorSystem ACTOR_SYSTEM = ActorSystem.create();
  27     // Create three example actors
  28     private static Map<String, String> allPeers = new HashMap<>();
  29
  30     static {
  31         allPeers.put("example-1", "akka://default/user/example-1");
  32         allPeers.put("example-2", "akka://default/user/example-2");
  33         allPeers.put("example-3", "akka://default/user/example-3");
  34     }
  35
  36     private Main() {
  37     }
  38
  39     @SuppressWarnings("checkstyle:RegexpSingleLineJava")
  40     public static void main(String[] args) throws Exception {
  41         ActorRef example1Actor =
  42             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-1",
  43                 withoutPeer("example-1"), Optional.<ConfigParams>absent()), "example-1");
  44
  45         ActorRef example2Actor =
  46             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-2",
  47                 withoutPeer("example-2"), Optional.<ConfigParams>absent()), "example-2");
  48
  49         ActorRef example3Actor =
  50             ACTOR_SYSTEM.actorOf(ExampleActor.props("example-3",
  51                 withoutPeer("example-3"), Optional.<ConfigParams>absent()), "example-3");
  52
  53
  54         List<ActorRef> examples = Arrays.asList(example1Actor, example2Actor, example3Actor);
  55
  56         ActorRef clientActor = ACTOR_SYSTEM.actorOf(ClientActor.props(example1Actor));
  57         BufferedReader br =
  58             new BufferedReader(new InputStreamReader(System.in, Charset.defaultCharset()));
  59
  60         System.out.println("Usage :");
  61         System.out.println("s <1-3> to start a peer");
  62         System.out.println("k <1-3> to kill a peer");
  63
  64         while (true) {
  65             System.out.print("Enter command (0 to exit):");
  66             try {
  67                 String line = br.readLine();
  68                 if (line == null) {
  69                     continue;
  70                 }
  71                 String[] split = line.split(" ");
  72                 if (split.length > 1) {
  73                     String command = split[0];
  74                     String actor = split[1];
  75
  76                     if ("k".equals(command)) {
  77                         int num = Integer.parseInt(actor);
  78                         examples.get(num - 1).tell(PoisonPill.getInstance(), null);
  79                         continue;
  80                     } else if ("s".equals(command)) {
  81                         int num = Integer.parseInt(actor);
  82                         String actorName = "example-" + num;
  83                         examples.add(num - 1,
  84                             ACTOR_SYSTEM.actorOf(ExampleActor.props(actorName,
  85                                 withoutPeer(actorName), Optional.<ConfigParams>absent()),
  86                                 actorName));
  87                         System.out.println("Created actor : " + actorName);
  88                         continue;
  89                     }
  90                 }
  91
  92                 int num = Integer.parseInt(line);
  93                 if (num == 0) {
  94                     System.exit(0);
  95                 }
  96                 clientActor.tell(new KeyValue("key " + num, "value " + num), null);
  97             } catch (NumberFormatException nfe) {
  98                 System.err.println("Invalid Format!");
  99             }
 100         }
 101     }
 102
 103     private static Map<String, String> withoutPeer(String peerId) {
 104         Map<String, String> without = new HashMap<>(allPeers);
 105         without.remove(peerId);
 106         return without;
 107     }
 108 }