opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/MockRaftActorContext.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.raft;
  10
  11 import akka.actor.ActorRef;
  12 import akka.actor.ActorSelection;
  13 import akka.actor.ActorSystem;
  14 import akka.actor.Props;
  15 import akka.event.Logging;
  16 import akka.event.LoggingAdapter;
  17
  18 import java.util.ArrayList;
  19 import java.util.Collections;
  20 import java.util.HashMap;
  21 import java.util.List;
  22 import java.util.Map;
  23
  24 public class MockRaftActorContext implements RaftActorContext {
  25
  26     private String id;
  27     private ActorSystem system;
  28     private ActorRef actor;
  29     private long index = 0;
  30     private long lastApplied = 0;
  31     private final ElectionTerm electionTerm;
  32     private ReplicatedLog replicatedLog;
  33     private Map<String, String> peerAddresses = new HashMap();
  34
  35     public MockRaftActorContext(){
  36         electionTerm = null;
  37
  38         initReplicatedLog();
  39     }
  40
  41     public MockRaftActorContext(String id, ActorSystem system, ActorRef actor){
  42         this.id = id;
  43         this.system = system;
  44         this.actor = actor;
  45
  46         final String id1 = id;
  47         electionTerm = new ElectionTerm() {
  48             /**
  49              * Identifier of the actor whose election term information this is
  50              */
  51             private final String id = id1;
  52             private long currentTerm = 0;
  53             private String votedFor = "";
  54
  55             public long getCurrentTerm() {
  56                 return currentTerm;
  57             }
  58
  59             public String getVotedFor() {
  60                 return votedFor;
  61             }
  62
  63             public void update(long currentTerm, String votedFor){
  64                 this.currentTerm = currentTerm;
  65                 this.votedFor = votedFor;
  66
  67                 // TODO : Write to some persistent state
  68             }
  69
  70             @Override public void updateAndPersist(long currentTerm,
  71                 String votedFor) {
  72                 update(currentTerm, votedFor);
  73             }
  74         };
  75
  76         initReplicatedLog();
  77     }
  78
  79
  80     public void initReplicatedLog(){
  81         this.replicatedLog = new SimpleReplicatedLog();
  82         this.replicatedLog.append(new MockReplicatedLogEntry(1, 1, ""));
  83     }
  84
  85     @Override public ActorRef actorOf(Props props) {
  86         return system.actorOf(props);
  87     }
  88
  89     @Override public ActorSelection actorSelection(String path) {
  90         return system.actorSelection(path);
  91     }
  92
  93     @Override public String getId() {
  94         return id;
  95     }
  96
  97     @Override public ActorRef getActor() {
  98         return actor;
  99     }
 100
 101     @Override public ElectionTerm getTermInformation() {
 102         return electionTerm;
 103     }
 104
 105     public void setIndex(long index){
 106         this.index = index;
 107     }
 108
 109     @Override public long getCommitIndex() {
 110         return index;
 111     }
 112
 113     @Override public void setCommitIndex(long commitIndex) {
 114         this.index = commitIndex;
 115     }
 116
 117     @Override public void setLastApplied(long lastApplied){
 118         this.lastApplied = lastApplied;
 119     }
 120
 121     @Override public long getLastApplied() {
 122         return lastApplied;
 123     }
 124
 125     public void setReplicatedLog(ReplicatedLog replicatedLog) {
 126         this.replicatedLog = replicatedLog;
 127     }
 128
 129     @Override public ReplicatedLog getReplicatedLog() {
 130         return replicatedLog;
 131     }
 132
 133     @Override public ActorSystem getActorSystem() {
 134         return this.system;
 135     }
 136
 137     @Override public LoggingAdapter getLogger() {
 138         return Logging.getLogger(system, this);
 139     }
 140
 141     @Override public Map<String, String> getPeerAddresses() {
 142         return peerAddresses;
 143     }
 144
 145     @Override public String getPeerAddress(String peerId) {
 146         return peerAddresses.get(peerId);
 147     }
 148
 149     @Override public void addToPeers(String name, String address) {
 150         peerAddresses.put(name, address);
 151     }
 152
 153     @Override public void removePeer(String name) {
 154         peerAddresses.remove(name);
 155     }
 156
 157     public void setPeerAddresses(Map<String, String> peerAddresses) {
 158         this.peerAddresses = peerAddresses;
 159     }
 160
 161
 162
 163     public static class SimpleReplicatedLog implements ReplicatedLog {
 164         private final List<ReplicatedLogEntry> log = new ArrayList<>();
 165
 166         @Override public ReplicatedLogEntry get(long index) {
 167             if(index >= log.size() || index < 0){
 168                 return null;
 169             }
 170             return log.get((int) index);
 171         }
 172
 173         @Override public ReplicatedLogEntry last() {
 174             if(log.size() == 0){
 175                 return null;
 176             }
 177             return log.get(log.size()-1);
 178         }
 179
 180         @Override public long lastIndex() {
 181             if(log.size() == 0){
 182                 return -1;
 183             }
 184
 185             return last().getIndex();
 186         }
 187
 188         @Override public long lastTerm() {
 189             if(log.size() == 0){
 190                 return -1;
 191             }
 192
 193             return last().getTerm();
 194         }
 195
 196         @Override public void removeFrom(long index) {
 197             if(index >= log.size() || index < 0){
 198                 return;
 199             }
 200
 201             log.subList((int) index, log.size()).clear();
 202             //log.remove((int) index);
 203         }
 204
 205         @Override public void removeFromAndPersist(long index) {
 206             removeFrom(index);
 207         }
 208
 209         @Override public void append(ReplicatedLogEntry replicatedLogEntry) {
 210             log.add(replicatedLogEntry);
 211         }
 212
 213         @Override public void appendAndPersist(
 214             ReplicatedLogEntry replicatedLogEntry) {
 215             append(replicatedLogEntry);
 216         }
 217
 218         @Override public List<ReplicatedLogEntry> getFrom(long index) {
 219             if(index >= log.size() || index < 0){
 220                 return Collections.EMPTY_LIST;
 221             }
 222             List<ReplicatedLogEntry> entries = new ArrayList<>();
 223             for(int i=(int) index ; i < log.size() ; i++) {
 224                 entries.add(get(i));
 225             }
 226             return entries;
 227         }
 228
 229         @Override public long size() {
 230             return log.size();
 231         }
 232
 233         @Override public boolean isPresent(long index) {
 234             if(index >= log.size() || index < 0){
 235                 return false;
 236             }
 237
 238             return true;
 239         }
 240
 241         @Override public boolean isInSnapshot(long index) {
 242             return false;
 243         }
 244
 245         @Override public Object getSnapshot() {
 246             return null;
 247         }
 248
 249         @Override public long getSnapshotIndex() {
 250             return -1;
 251         }
 252
 253         @Override public long getSnapshotTerm() {
 254             return -1;
 255         }
 256     }
 257
 258     public static class MockReplicatedLogEntry implements ReplicatedLogEntry {
 259
 260         private final long term;
 261         private final long index;
 262         private final Object data;
 263
 264         public MockReplicatedLogEntry(long term, long index, Object data){
 265
 266             this.term = term;
 267             this.index = index;
 268             this.data = data;
 269         }
 270
 271         @Override public Object getData() {
 272             return data;
 273         }
 274
 275         @Override public long getTerm() {
 276             return term;
 277         }
 278
 279         @Override public long getIndex() {
 280             return index;
 281         }
 282     }
 283 }