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