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 import com.google.protobuf.GeneratedMessage;
  18 import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload;
  19 import org.opendaylight.controller.cluster.raft.protobuff.messages.AppendEntriesMessages;
  20 import org.opendaylight.controller.cluster.raft.protobuff.messages.MockPayloadMessages;
  21 import com.google.common.base.Preconditions;
  22
  23 import java.io.Serializable;
  24 import java.util.ArrayList;
  25 import java.util.Collections;
  26 import java.util.HashMap;
  27 import java.util.List;
  28 import java.util.Map;
  29
  30 public class MockRaftActorContext implements RaftActorContext {
  31
  32     private String id;
  33     private ActorSystem system;
  34     private ActorRef actor;
  35     private long index = 0;
  36     private long lastApplied = 0;
  37     private final ElectionTerm electionTerm;
  38     private ReplicatedLog replicatedLog;
  39     private Map<String, String> peerAddresses = new HashMap();
  40
  41     public MockRaftActorContext(){
  42         electionTerm = null;
  43
  44         initReplicatedLog();
  45     }
  46
  47     public MockRaftActorContext(String id, ActorSystem system, ActorRef actor){
  48         this.id = id;
  49         this.system = system;
  50         this.actor = actor;
  51
  52         final String id1 = id;
  53         electionTerm = new ElectionTerm() {
  54             /**
  55              * Identifier of the actor whose election term information this is
  56              */
  57             private final String id = id1;
  58             private long currentTerm = 0;
  59             private String votedFor = "";
  60
  61             public long getCurrentTerm() {
  62                 return currentTerm;
  63             }
  64
  65             public String getVotedFor() {
  66                 return votedFor;
  67             }
  68
  69             public void update(long currentTerm, String votedFor){
  70                 this.currentTerm = currentTerm;
  71                 this.votedFor = votedFor;
  72
  73                 // TODO : Write to some persistent state
  74             }
  75
  76             @Override public void updateAndPersist(long currentTerm,
  77                 String votedFor) {
  78                 update(currentTerm, votedFor);
  79             }
  80         };
  81
  82         initReplicatedLog();
  83     }
  84
  85
  86     public void initReplicatedLog(){
  87         this.replicatedLog = new SimpleReplicatedLog();
  88         this.replicatedLog.append(new MockReplicatedLogEntry(1, 1, new MockPayload("")));
  89     }
  90
  91     @Override public ActorRef actorOf(Props props) {
  92         return system.actorOf(props);
  93     }
  94
  95     @Override public ActorSelection actorSelection(String path) {
  96         return system.actorSelection(path);
  97     }
  98
  99     @Override public String getId() {
 100         return id;
 101     }
 102
 103     @Override public ActorRef getActor() {
 104         return actor;
 105     }
 106
 107     @Override public ElectionTerm getTermInformation() {
 108         return electionTerm;
 109     }
 110
 111     public void setIndex(long index){
 112         this.index = index;
 113     }
 114
 115     @Override public long getCommitIndex() {
 116         return index;
 117     }
 118
 119     @Override public void setCommitIndex(long commitIndex) {
 120         this.index = commitIndex;
 121     }
 122
 123     @Override public void setLastApplied(long lastApplied){
 124         this.lastApplied = lastApplied;
 125     }
 126
 127     @Override public long getLastApplied() {
 128         return lastApplied;
 129     }
 130
 131     public void setReplicatedLog(ReplicatedLog replicatedLog) {
 132         this.replicatedLog = replicatedLog;
 133     }
 134
 135     @Override public ReplicatedLog getReplicatedLog() {
 136         return replicatedLog;
 137     }
 138
 139     @Override public ActorSystem getActorSystem() {
 140         return this.system;
 141     }
 142
 143     @Override public LoggingAdapter getLogger() {
 144         return Logging.getLogger(system, this);
 145     }
 146
 147     @Override public Map<String, String> getPeerAddresses() {
 148         return peerAddresses;
 149     }
 150
 151     @Override public String getPeerAddress(String peerId) {
 152         return peerAddresses.get(peerId);
 153     }
 154
 155     @Override public void addToPeers(String name, String address) {
 156         peerAddresses.put(name, address);
 157     }
 158
 159     @Override public void removePeer(String name) {
 160         peerAddresses.remove(name);
 161     }
 162
 163     @Override public ActorSelection getPeerActorSelection(String peerId) {
 164         String peerAddress = getPeerAddress(peerId);
 165         if(peerAddress != null){
 166             return actorSelection(peerAddress);
 167         }
 168         return null;
 169     }
 170
 171     @Override public void setPeerAddress(String peerId, String peerAddress) {
 172         Preconditions.checkState(peerAddresses.containsKey(peerId));
 173         peerAddresses.put(peerId, peerAddress);
 174     }
 175
 176     public void setPeerAddresses(Map<String, String> peerAddresses) {
 177         this.peerAddresses = peerAddresses;
 178     }
 179
 180     @Override
 181     public ConfigParams getConfigParams() {
 182         return new DefaultConfigParamsImpl();
 183     }
 184
 185     public static class SimpleReplicatedLog implements ReplicatedLog {
 186         private final List<ReplicatedLogEntry> log = new ArrayList<>();
 187
 188         @Override public ReplicatedLogEntry get(long index) {
 189             if(index >= log.size() || index < 0){
 190                 return null;
 191             }
 192             return log.get((int) index);
 193         }
 194
 195         @Override public ReplicatedLogEntry last() {
 196             if(log.size() == 0){
 197                 return null;
 198             }
 199             return log.get(log.size()-1);
 200         }
 201
 202         @Override public long lastIndex() {
 203             if(log.size() == 0){
 204                 return -1;
 205             }
 206
 207             return last().getIndex();
 208         }
 209
 210         @Override public long lastTerm() {
 211             if(log.size() == 0){
 212                 return -1;
 213             }
 214
 215             return last().getTerm();
 216         }
 217
 218         @Override public void removeFrom(long index) {
 219             if(index >= log.size() || index < 0){
 220                 return;
 221             }
 222
 223             log.subList((int) index, log.size()).clear();
 224             //log.remove((int) index);
 225         }
 226
 227         @Override public void removeFromAndPersist(long index) {
 228             removeFrom(index);
 229         }
 230
 231         @Override public void append(ReplicatedLogEntry replicatedLogEntry) {
 232             log.add(replicatedLogEntry);
 233         }
 234
 235         @Override public void appendAndPersist(
 236             ReplicatedLogEntry replicatedLogEntry) {
 237             append(replicatedLogEntry);
 238         }
 239
 240         @Override public List<ReplicatedLogEntry> getFrom(long index) {
 241             if(index >= log.size() || index < 0){
 242                 return Collections.EMPTY_LIST;
 243             }
 244             List<ReplicatedLogEntry> entries = new ArrayList<>();
 245             for(int i=(int) index ; i < log.size() ; i++) {
 246                 entries.add(get(i));
 247             }
 248             return entries;
 249         }
 250
 251         @Override public List<ReplicatedLogEntry> getFrom(long index, int max) {
 252             if(index >= log.size() || index < 0){
 253                 return Collections.EMPTY_LIST;
 254             }
 255             List<ReplicatedLogEntry> entries = new ArrayList<>();
 256             int maxIndex = (int) index + max;
 257             if(maxIndex > log.size()){
 258                 maxIndex = log.size();
 259             }
 260
 261             for(int i=(int) index ; i < maxIndex ; i++) {
 262                 entries.add(get(i));
 263             }
 264             return entries;
 265
 266         }
 267
 268         @Override public long size() {
 269             return log.size();
 270         }
 271
 272         @Override public boolean isPresent(long index) {
 273             if(index >= log.size() || index < 0){
 274                 return false;
 275             }
 276
 277             return true;
 278         }
 279
 280         @Override public boolean isInSnapshot(long index) {
 281             return false;
 282         }
 283
 284         @Override public Object getSnapshot() {
 285             return null;
 286         }
 287
 288         @Override public long getSnapshotIndex() {
 289             return -1;
 290         }
 291
 292         @Override public long getSnapshotTerm() {
 293             return -1;
 294         }
 295     }
 296
 297     public static class MockPayload extends Payload implements Serializable {
 298         private String value = "";
 299
 300         public MockPayload(String s) {
 301             this.value = s;
 302         }
 303
 304         @Override public  Map<GeneratedMessage.GeneratedExtension, String> encode() {
 305             Map<GeneratedMessage.GeneratedExtension, String> map = new HashMap<GeneratedMessage.GeneratedExtension, String>();
 306             map.put(MockPayloadMessages.value, value);
 307             return map;
 308         }
 309
 310         @Override public Payload decode(
 311             AppendEntriesMessages.AppendEntries.ReplicatedLogEntry.Payload payloadProtoBuff) {
 312             String value = payloadProtoBuff.getExtension(MockPayloadMessages.value);
 313             this.value = value;
 314             return this;
 315         }
 316
 317         @Override public String getClientPayloadClassName() {
 318             return MockPayload.class.getName();
 319         }
 320
 321         public String toString() {
 322             return value;
 323         }
 324     }
 325
 326     public static class MockReplicatedLogEntry implements ReplicatedLogEntry, Serializable {
 327
 328         private final long term;
 329         private final long index;
 330         private final Payload data;
 331
 332         public MockReplicatedLogEntry(long term, long index, Payload data){
 333
 334             this.term = term;
 335             this.index = index;
 336             this.data = data;
 337         }
 338
 339         @Override public Payload getData() {
 340             return data;
 341         }
 342
 343         @Override public long getTerm() {
 344             return term;
 345         }
 346
 347         @Override public long getIndex() {
 348             return index;
 349         }
 350     }
 351 }