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 com.google.common.base.Preconditions;
  16 import com.google.protobuf.GeneratedMessage;
  17 import java.io.Serializable;
  18 import java.util.HashMap;
  19 import java.util.Map;
  20 import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload;
  21 import org.opendaylight.controller.protobuff.messages.cluster.raft.AppendEntriesMessages;
  22 import org.opendaylight.controller.protobuff.messages.cluster.raft.test.MockPayloadMessages;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 public class MockRaftActorContext implements RaftActorContext {
  27
  28     private String id;
  29     private ActorSystem system;
  30     private ActorRef actor;
  31     private long index = 0;
  32     private long lastApplied = 0;
  33     private final ElectionTerm electionTerm;
  34     private ReplicatedLog replicatedLog;
  35     private Map<String, String> peerAddresses = new HashMap<>();
  36     private ConfigParams configParams;
  37     private boolean snapshotCaptureInitiated;
  38
  39     public MockRaftActorContext(){
  40         electionTerm = new ElectionTerm() {
  41             private long currentTerm = 1;
  42             private String votedFor = "";
  43
  44             @Override
  45             public long getCurrentTerm() {
  46                 return currentTerm;
  47             }
  48
  49             @Override
  50             public String getVotedFor() {
  51                 return votedFor;
  52             }
  53
  54             @Override
  55             public void update(long currentTerm, String votedFor){
  56                 this.currentTerm = currentTerm;
  57                 this.votedFor = votedFor;
  58
  59                 // TODO : Write to some persistent state
  60             }
  61
  62             @Override public void updateAndPersist(long currentTerm,
  63                 String votedFor) {
  64                 update(currentTerm, votedFor);
  65             }
  66         };
  67
  68         configParams = new DefaultConfigParamsImpl();
  69     }
  70
  71     public MockRaftActorContext(String id, ActorSystem system, ActorRef actor){
  72         this();
  73         this.id = id;
  74         this.system = system;
  75         this.actor = actor;
  76
  77         initReplicatedLog();
  78     }
  79
  80
  81     public void initReplicatedLog(){
  82         this.replicatedLog = new SimpleReplicatedLog();
  83         long term = getTermInformation().getCurrentTerm();
  84         this.replicatedLog.append(new MockReplicatedLogEntry(term, 0, new MockPayload("1")));
  85         this.replicatedLog.append(new MockReplicatedLogEntry(term, 1, new MockPayload("2")));
  86     }
  87
  88     @Override public ActorRef actorOf(Props props) {
  89         return system.actorOf(props);
  90     }
  91
  92     @Override public ActorSelection actorSelection(String path) {
  93         return system.actorSelection(path);
  94     }
  95
  96     @Override public String getId() {
  97         return id;
  98     }
  99
 100     @Override public ActorRef getActor() {
 101         return actor;
 102     }
 103
 104     @Override public ElectionTerm getTermInformation() {
 105         return electionTerm;
 106     }
 107
 108     public void setIndex(long index){
 109         this.index = index;
 110     }
 111
 112     @Override public long getCommitIndex() {
 113         return index;
 114     }
 115
 116     @Override public void setCommitIndex(long commitIndex) {
 117         this.index = commitIndex;
 118     }
 119
 120     @Override public void setLastApplied(long lastApplied){
 121         this.lastApplied = lastApplied;
 122     }
 123
 124     @Override public long getLastApplied() {
 125         return lastApplied;
 126     }
 127
 128     @Override
 129     // FIXME : A lot of tests try to manipulate the replicated log by setting it using this method
 130     // This is OK to do if the underlyingActor is not RafActor or a derived class. If not then you should not
 131     // used this way to manipulate the log because the RaftActor actually has a field replicatedLog
 132     // which it creates internally and sets on the RaftActorContext
 133     // The only right way to manipulate the replicated log therefore is to get it from either the RaftActor
 134     // or the RaftActorContext and modify the entries in there instead of trying to replace it by using this setter
 135     // Simple assertion that will fail if you do so
 136     // ReplicatedLog log = new ReplicatedLogImpl();
 137     // raftActor.underlyingActor().getRaftActorContext().setReplicatedLog(log);
 138     // assertEquals(log, raftActor.underlyingActor().getReplicatedLog())
 139     public void setReplicatedLog(ReplicatedLog replicatedLog) {
 140         this.replicatedLog = replicatedLog;
 141     }
 142
 143     @Override public ReplicatedLog getReplicatedLog() {
 144         return replicatedLog;
 145     }
 146
 147     @Override public ActorSystem getActorSystem() {
 148         return this.system;
 149     }
 150
 151     @Override public Logger getLogger() {
 152         return LoggerFactory.getLogger(getClass());
 153     }
 154
 155     @Override public Map<String, String> getPeerAddresses() {
 156         return peerAddresses;
 157     }
 158
 159     @Override public String getPeerAddress(String peerId) {
 160         return peerAddresses.get(peerId);
 161     }
 162
 163     @Override public void addToPeers(String name, String address) {
 164         peerAddresses.put(name, address);
 165     }
 166
 167     @Override public void removePeer(String name) {
 168         peerAddresses.remove(name);
 169     }
 170
 171     @Override public ActorSelection getPeerActorSelection(String peerId) {
 172         String peerAddress = getPeerAddress(peerId);
 173         if(peerAddress != null){
 174             return actorSelection(peerAddress);
 175         }
 176         return null;
 177     }
 178
 179     @Override public void setPeerAddress(String peerId, String peerAddress) {
 180         Preconditions.checkState(peerAddresses.containsKey(peerId));
 181         peerAddresses.put(peerId, peerAddress);
 182     }
 183
 184     public void setPeerAddresses(Map<String, String> peerAddresses) {
 185         this.peerAddresses = peerAddresses;
 186     }
 187
 188     @Override
 189     public ConfigParams getConfigParams() {
 190         return configParams;
 191     }
 192
 193     @Override
 194     public void setSnapshotCaptureInitiated(boolean snapshotCaptureInitiated) {
 195         this.snapshotCaptureInitiated = snapshotCaptureInitiated;
 196     }
 197
 198     @Override
 199     public boolean isSnapshotCaptureInitiated() {
 200         return snapshotCaptureInitiated;
 201     }
 202
 203     public void setConfigParams(ConfigParams configParams) {
 204         this.configParams = configParams;
 205     }
 206
 207     public static class SimpleReplicatedLog extends AbstractReplicatedLogImpl {
 208         @Override public void appendAndPersist(
 209             ReplicatedLogEntry replicatedLogEntry) {
 210             append(replicatedLogEntry);
 211         }
 212
 213         @Override
 214         public int dataSize() {
 215             return -1;
 216         }
 217
 218         @Override public void removeFromAndPersist(long index) {
 219             removeFrom(index);
 220         }
 221     }
 222
 223     public static class MockPayload extends Payload implements Serializable {
 224         private static final long serialVersionUID = 3121380393130864247L;
 225         private String value = "";
 226
 227         public MockPayload(){
 228
 229         }
 230
 231         public MockPayload(String s) {
 232             this.value = s;
 233         }
 234
 235         @Override public  Map<GeneratedMessage.GeneratedExtension, String> encode() {
 236             Map<GeneratedMessage.GeneratedExtension, String> map = new HashMap<GeneratedMessage.GeneratedExtension, String>();
 237             map.put(MockPayloadMessages.value, value);
 238             return map;
 239         }
 240
 241         @Override public Payload decode(
 242             AppendEntriesMessages.AppendEntries.ReplicatedLogEntry.Payload payloadProtoBuff) {
 243             String value = payloadProtoBuff.getExtension(MockPayloadMessages.value);
 244             this.value = value;
 245             return this;
 246         }
 247
 248         @Override
 249         public int size() {
 250             return value.length();
 251         }
 252
 253         @Override public String getClientPayloadClassName() {
 254             return MockPayload.class.getName();
 255         }
 256
 257         @Override
 258         public String toString() {
 259             return value;
 260         }
 261
 262         @Override
 263         public int hashCode() {
 264             final int prime = 31;
 265             int result = 1;
 266             result = prime * result + ((value == null) ? 0 : value.hashCode());
 267             return result;
 268         }
 269
 270         @Override
 271         public boolean equals(Object obj) {
 272             if (this == obj) {
 273                 return true;
 274             }
 275             if (obj == null) {
 276                 return false;
 277             }
 278             if (getClass() != obj.getClass()) {
 279                 return false;
 280             }
 281             MockPayload other = (MockPayload) obj;
 282             if (value == null) {
 283                 if (other.value != null) {
 284                     return false;
 285                 }
 286             } else if (!value.equals(other.value)) {
 287                 return false;
 288             }
 289             return true;
 290         }
 291     }
 292
 293     public static class MockReplicatedLogEntry implements ReplicatedLogEntry, Serializable {
 294         private static final long serialVersionUID = 1L;
 295
 296         private final long term;
 297         private final long index;
 298         private final Payload data;
 299
 300         public MockReplicatedLogEntry(long term, long index, Payload data){
 301
 302             this.term = term;
 303             this.index = index;
 304             this.data = data;
 305         }
 306
 307         @Override public Payload getData() {
 308             return data;
 309         }
 310
 311         @Override public long getTerm() {
 312             return term;
 313         }
 314
 315         @Override public long getIndex() {
 316             return index;
 317         }
 318
 319         @Override
 320         public int size() {
 321             return getData().size();
 322         }
 323
 324         @Override
 325         public int hashCode() {
 326             final int prime = 31;
 327             int result = 1;
 328             result = prime * result + ((data == null) ? 0 : data.hashCode());
 329             result = prime * result + (int) (index ^ (index >>> 32));
 330             result = prime * result + (int) (term ^ (term >>> 32));
 331             return result;
 332         }
 333
 334         @Override
 335         public boolean equals(Object obj) {
 336             if (this == obj) {
 337                 return true;
 338             }
 339             if (obj == null) {
 340                 return false;
 341             }
 342             if (getClass() != obj.getClass()) {
 343                 return false;
 344             }
 345             MockReplicatedLogEntry other = (MockReplicatedLogEntry) obj;
 346             if (data == null) {
 347                 if (other.data != null) {
 348                     return false;
 349                 }
 350             } else if (!data.equals(other.data)) {
 351                 return false;
 352             }
 353             if (index != other.index) {
 354                 return false;
 355             }
 356             if (term != other.term) {
 357                 return false;
 358             }
 359             return true;
 360         }
 361
 362         @Override
 363         public String toString() {
 364             StringBuilder builder = new StringBuilder();
 365             builder.append("MockReplicatedLogEntry [term=").append(term).append(", index=").append(index)
 366                     .append(", data=").append(data).append("]");
 367             return builder.toString();
 368         }
 369     }
 370
 371     public static class MockReplicatedLogBuilder {
 372         private final ReplicatedLog mockLog = new SimpleReplicatedLog();
 373
 374         public  MockReplicatedLogBuilder createEntries(int start, int end, int term) {
 375             for (int i=start; i<end; i++) {
 376                 this.mockLog.append(new ReplicatedLogImplEntry(i, term, new MockRaftActorContext.MockPayload("foo" + i)));
 377             }
 378             return this;
 379         }
 380
 381         public  MockReplicatedLogBuilder addEntry(int index, int term, MockPayload payload) {
 382             this.mockLog.append(new ReplicatedLogImplEntry(index, term, payload));
 383             return this;
 384         }
 385
 386         public ReplicatedLog build() {
 387             return this.mockLog;
 388         }
 389     }
 390 }