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
 181
 182     public static class SimpleReplicatedLog implements ReplicatedLog {
 183         private final List<ReplicatedLogEntry> log = new ArrayList<>();
 184
 185         @Override public ReplicatedLogEntry get(long index) {
 186             if(index >= log.size() || index < 0){
 187                 return null;
 188             }
 189             return log.get((int) index);
 190         }
 191
 192         @Override public ReplicatedLogEntry last() {
 193             if(log.size() == 0){
 194                 return null;
 195             }
 196             return log.get(log.size()-1);
 197         }
 198
 199         @Override public long lastIndex() {
 200             if(log.size() == 0){
 201                 return -1;
 202             }
 203
 204             return last().getIndex();
 205         }
 206
 207         @Override public long lastTerm() {
 208             if(log.size() == 0){
 209                 return -1;
 210             }
 211
 212             return last().getTerm();
 213         }
 214
 215         @Override public void removeFrom(long index) {
 216             if(index >= log.size() || index < 0){
 217                 return;
 218             }
 219
 220             log.subList((int) index, log.size()).clear();
 221             //log.remove((int) index);
 222         }
 223
 224         @Override public void removeFromAndPersist(long index) {
 225             removeFrom(index);
 226         }
 227
 228         @Override public void append(ReplicatedLogEntry replicatedLogEntry) {
 229             log.add(replicatedLogEntry);
 230         }
 231
 232         @Override public void appendAndPersist(
 233             ReplicatedLogEntry replicatedLogEntry) {
 234             append(replicatedLogEntry);
 235         }
 236
 237         @Override public List<ReplicatedLogEntry> getFrom(long index) {
 238             if(index >= log.size() || index < 0){
 239                 return Collections.EMPTY_LIST;
 240             }
 241             List<ReplicatedLogEntry> entries = new ArrayList<>();
 242             for(int i=(int) index ; i < log.size() ; i++) {
 243                 entries.add(get(i));
 244             }
 245             return entries;
 246         }
 247
 248         @Override public long size() {
 249             return log.size();
 250         }
 251
 252         @Override public boolean isPresent(long index) {
 253             if(index >= log.size() || index < 0){
 254                 return false;
 255             }
 256
 257             return true;
 258         }
 259
 260         @Override public boolean isInSnapshot(long index) {
 261             return false;
 262         }
 263
 264         @Override public Object getSnapshot() {
 265             return null;
 266         }
 267
 268         @Override public long getSnapshotIndex() {
 269             return -1;
 270         }
 271
 272         @Override public long getSnapshotTerm() {
 273             return -1;
 274         }
 275     }
 276
 277     public static class MockPayload extends Payload implements Serializable {
 278         private String value = "";
 279
 280         public MockPayload(String s) {
 281             this.value = s;
 282         }
 283
 284         @Override public  Map<GeneratedMessage.GeneratedExtension, String> encode() {
 285             Map<GeneratedMessage.GeneratedExtension, String> map = new HashMap<GeneratedMessage.GeneratedExtension, String>();
 286             map.put(MockPayloadMessages.value, value);
 287             return map;
 288         }
 289
 290         @Override public Payload decode(
 291             AppendEntriesMessages.AppendEntries.ReplicatedLogEntry.Payload payloadProtoBuff) {
 292             String value = payloadProtoBuff.getExtension(MockPayloadMessages.value);
 293             this.value = value;
 294             return this;
 295         }
 296
 297         @Override public String getClientPayloadClassName() {
 298             return MockPayload.class.getName();
 299         }
 300
 301         public String toString() {
 302             return value;
 303         }
 304     }
 305
 306     public static class MockReplicatedLogEntry implements ReplicatedLogEntry, Serializable {
 307
 308         private final long term;
 309         private final long index;
 310         private final Payload data;
 311
 312         public MockReplicatedLogEntry(long term, long index, Payload data){
 313
 314             this.term = term;
 315             this.index = index;
 316             this.data = data;
 317         }
 318
 319         @Override public Payload getData() {
 320             return data;
 321         }
 322
 323         @Override public long getTerm() {
 324             return term;
 325         }
 326
 327         @Override public long getIndex() {
 328             return index;
 329         }
 330     }
 331 }