opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/RaftActorContextImpl.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.ActorContext;
  12 import akka.actor.ActorRef;
  13 import akka.actor.ActorSelection;
  14 import akka.actor.ActorSystem;
  15 import akka.actor.Props;
  16
  17 import com.google.common.annotations.VisibleForTesting;
  18 import com.google.common.base.Supplier;
  19 import java.util.Collection;
  20 import java.util.HashMap;
  21 import java.util.HashSet;
  22 import java.util.Map;
  23 import java.util.Set;
  24 import org.opendaylight.controller.cluster.DataPersistenceProvider;
  25 import org.opendaylight.controller.cluster.raft.policy.RaftPolicy;
  26 import org.opendaylight.controller.cluster.raft.ServerConfigurationPayload.ServerInfo;
  27 import org.slf4j.Logger;
  28
  29 public class RaftActorContextImpl implements RaftActorContext {
  30
  31     private final ActorRef actor;
  32
  33     private final ActorContext context;
  34
  35     private final String id;
  36
  37     private final ElectionTerm termInformation;
  38
  39     private long commitIndex;
  40
  41     private long lastApplied;
  42
  43     private ReplicatedLog replicatedLog;
  44
  45     private final Map<String, PeerInfo> peerInfoMap = new HashMap<>();
  46
  47     private final Logger LOG;
  48
  49     private ConfigParams configParams;
  50
  51     @VisibleForTesting
  52     private Supplier<Long> totalMemoryRetriever;
  53
  54     // Snapshot manager will need to be created on demand as it needs raft actor context which cannot
  55     // be passed to it in the constructor
  56     private SnapshotManager snapshotManager;
  57
  58     private final DataPersistenceProvider persistenceProvider;
  59
  60     private short payloadVersion;
  61
  62     public RaftActorContextImpl(ActorRef actor, ActorContext context, String id,
  63             ElectionTerm termInformation, long commitIndex, long lastApplied, Map<String, String> peerAddresses,
  64             ConfigParams configParams, DataPersistenceProvider persistenceProvider, Logger logger) {
  65         this.actor = actor;
  66         this.context = context;
  67         this.id = id;
  68         this.termInformation = termInformation;
  69         this.commitIndex = commitIndex;
  70         this.lastApplied = lastApplied;
  71         this.configParams = configParams;
  72         this.persistenceProvider = persistenceProvider;
  73         this.LOG = logger;
  74
  75         for(Map.Entry<String, String> e: peerAddresses.entrySet()) {
  76             peerInfoMap.put(e.getKey(), new PeerInfo(e.getKey(), e.getValue(), VotingState.VOTING));
  77         }
  78     }
  79
  80     public void setPayloadVersion(short payloadVersion) {
  81         this.payloadVersion = payloadVersion;
  82     }
  83
  84     @Override
  85     public short getPayloadVersion() {
  86         return payloadVersion;
  87     }
  88
  89     public void setConfigParams(ConfigParams configParams) {
  90         this.configParams = configParams;
  91     }
  92
  93     @Override
  94     public ActorRef actorOf(Props props){
  95         return context.actorOf(props);
  96     }
  97
  98     @Override
  99     public ActorSelection actorSelection(String path){
 100         return context.actorSelection(path);
 101     }
 102
 103     @Override
 104     public String getId() {
 105         return id;
 106     }
 107
 108     @Override
 109     public ActorRef getActor() {
 110         return actor;
 111     }
 112
 113     @Override
 114     public ElectionTerm getTermInformation() {
 115         return termInformation;
 116     }
 117
 118     @Override
 119     public long getCommitIndex() {
 120         return commitIndex;
 121     }
 122
 123     @Override public void setCommitIndex(long commitIndex) {
 124         this.commitIndex = commitIndex;
 125     }
 126
 127     @Override
 128     public long getLastApplied() {
 129         return lastApplied;
 130     }
 131
 132     @Override
 133     public void setLastApplied(long lastApplied) {
 134         this.lastApplied = lastApplied;
 135     }
 136
 137     @Override
 138     public void setReplicatedLog(ReplicatedLog replicatedLog) {
 139         this.replicatedLog = replicatedLog;
 140     }
 141
 142     @Override
 143     public ReplicatedLog getReplicatedLog() {
 144         return replicatedLog;
 145     }
 146
 147     @Override public ActorSystem getActorSystem() {
 148         return context.system();
 149     }
 150
 151     @Override public Logger getLogger() {
 152         return this.LOG;
 153     }
 154
 155     @Override
 156     public Collection<String> getPeerIds() {
 157         return peerInfoMap.keySet();
 158     }
 159
 160     @Override
 161     public Collection<PeerInfo> getPeers() {
 162         return peerInfoMap.values();
 163     }
 164
 165     @Override
 166     public PeerInfo getPeerInfo(String peerId) {
 167         return peerInfoMap.get(peerId);
 168     }
 169
 170     @Override
 171     public String getPeerAddress(String peerId) {
 172         String peerAddress = null;
 173         PeerInfo peerInfo = peerInfoMap.get(peerId);
 174         if(peerInfo != null) {
 175             peerAddress = peerInfo.getAddress();
 176             if(peerAddress == null) {
 177                 peerAddress = configParams.getPeerAddressResolver().resolve(peerId);
 178                 peerInfo.setAddress(peerAddress);
 179             }
 180         }
 181
 182         return peerAddress;
 183     }
 184
 185     @Override
 186     public void updatePeerIds(ServerConfigurationPayload serverConfig){
 187
 188         Set<String> currentPeers = new HashSet<>(this.getPeerIds());
 189         for(ServerInfo server: serverConfig.getServerConfig()) {
 190             if(!getId().equals(server.getId())) {
 191                 VotingState votingState = server.isVoting() ? VotingState.VOTING: VotingState.NON_VOTING;
 192                 if(!currentPeers.contains(server.getId())) {
 193                     this.addToPeers(server.getId(), null, votingState);
 194                 } else {
 195                     this.getPeerInfo(server.getId()).setVotingState(votingState);
 196                     currentPeers.remove(server.getId());
 197                 }
 198             }
 199         }
 200
 201         for(String peerIdToRemove: currentPeers) {
 202             this.removePeer(peerIdToRemove);
 203         }
 204     }
 205
 206     @Override public ConfigParams getConfigParams() {
 207         return configParams;
 208     }
 209
 210     @Override
 211     public void addToPeers(String id, String address, VotingState votingState) {
 212         peerInfoMap.put(id, new PeerInfo(id, address, votingState));
 213     }
 214
 215     @Override public void removePeer(String name) {
 216         peerInfoMap.remove(name);
 217     }
 218
 219     @Override public ActorSelection getPeerActorSelection(String peerId) {
 220         String peerAddress = getPeerAddress(peerId);
 221         if(peerAddress != null){
 222             return actorSelection(peerAddress);
 223         }
 224         return null;
 225     }
 226
 227     @Override
 228     public void setPeerAddress(String peerId, String peerAddress) {
 229         PeerInfo peerInfo = peerInfoMap.get(peerId);
 230         if(peerInfo != null) {
 231             LOG.info("Peer address for peer {} set to {}", peerId, peerAddress);
 232             peerInfo.setAddress(peerAddress);
 233         }
 234     }
 235
 236     @Override
 237     public SnapshotManager getSnapshotManager() {
 238         if(snapshotManager == null){
 239             snapshotManager = new SnapshotManager(this, LOG);
 240         }
 241         return snapshotManager;
 242     }
 243
 244     @Override
 245     public long getTotalMemory() {
 246         return totalMemoryRetriever != null ? totalMemoryRetriever.get() : Runtime.getRuntime().totalMemory();
 247     }
 248
 249     @Override
 250     public void setTotalMemoryRetriever(Supplier<Long> retriever) {
 251         totalMemoryRetriever = retriever;
 252     }
 253
 254     @Override
 255     public boolean hasFollowers() {
 256         return getPeerIds().size() > 0;
 257     }
 258
 259     @Override
 260     public DataPersistenceProvider getPersistenceProvider() {
 261         return persistenceProvider;
 262     }
 263
 264
 265     @Override
 266     public RaftPolicy getRaftPolicy() {
 267         return configParams.getRaftPolicy();
 268     }
 269 }