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 static com.google.common.base.Preconditions.checkState;
  12 import akka.actor.ActorRef;
  13 import akka.actor.ActorSelection;
  14 import akka.actor.ActorSystem;
  15 import akka.actor.Props;
  16 import akka.actor.UntypedActorContext;
  17 import com.google.common.annotations.VisibleForTesting;
  18 import com.google.common.base.Supplier;
  19 import java.util.Map;
  20 import org.opendaylight.controller.cluster.DataPersistenceProvider;
  21 import org.slf4j.Logger;
  22
  23 public class RaftActorContextImpl implements RaftActorContext {
  24
  25     private final ActorRef actor;
  26
  27     private final UntypedActorContext context;
  28
  29     private final String id;
  30
  31     private final ElectionTerm termInformation;
  32
  33     private long commitIndex;
  34
  35     private long lastApplied;
  36
  37     private ReplicatedLog replicatedLog;
  38
  39     private final Map<String, String> peerAddresses;
  40
  41     private final Logger LOG;
  42
  43     private ConfigParams configParams;
  44
  45     @VisibleForTesting
  46     private Supplier<Long> totalMemoryRetriever;
  47
  48     // Snapshot manager will need to be created on demand as it needs raft actor context which cannot
  49     // be passed to it in the constructor
  50     private SnapshotManager snapshotManager;
  51
  52     private final DataPersistenceProvider persistenceProvider;
  53
  54     public RaftActorContextImpl(ActorRef actor, UntypedActorContext context, String id,
  55             ElectionTerm termInformation, long commitIndex, long lastApplied, Map<String, String> peerAddresses,
  56             ConfigParams configParams, DataPersistenceProvider persistenceProvider, Logger logger) {
  57         this.actor = actor;
  58         this.context = context;
  59         this.id = id;
  60         this.termInformation = termInformation;
  61         this.commitIndex = commitIndex;
  62         this.lastApplied = lastApplied;
  63         this.peerAddresses = peerAddresses;
  64         this.configParams = configParams;
  65         this.persistenceProvider = persistenceProvider;
  66         this.LOG = logger;
  67     }
  68
  69     void setConfigParams(ConfigParams configParams) {
  70         this.configParams = configParams;
  71     }
  72
  73     @Override
  74     public ActorRef actorOf(Props props){
  75         return context.actorOf(props);
  76     }
  77
  78     @Override
  79     public ActorSelection actorSelection(String path){
  80         return context.actorSelection(path);
  81     }
  82
  83     @Override
  84     public String getId() {
  85         return id;
  86     }
  87
  88     @Override
  89     public ActorRef getActor() {
  90         return actor;
  91     }
  92
  93     @Override
  94     public ElectionTerm getTermInformation() {
  95         return termInformation;
  96     }
  97
  98     @Override
  99     public long getCommitIndex() {
 100         return commitIndex;
 101     }
 102
 103     @Override public void setCommitIndex(long commitIndex) {
 104         this.commitIndex = commitIndex;
 105     }
 106
 107     @Override
 108     public long getLastApplied() {
 109         return lastApplied;
 110     }
 111
 112     @Override public void setLastApplied(long lastApplied) {
 113         this.lastApplied = lastApplied;
 114     }
 115
 116     @Override public void setReplicatedLog(ReplicatedLog replicatedLog) {
 117         this.replicatedLog = replicatedLog;
 118     }
 119
 120     @Override public ReplicatedLog getReplicatedLog() {
 121         return replicatedLog;
 122     }
 123
 124     @Override public ActorSystem getActorSystem() {
 125         return context.system();
 126     }
 127
 128     @Override public Logger getLogger() {
 129         return this.LOG;
 130     }
 131
 132     @Override public Map<String, String> getPeerAddresses() {
 133         return peerAddresses;
 134     }
 135
 136     @Override public String getPeerAddress(String peerId) {
 137         return peerAddresses.get(peerId);
 138     }
 139
 140     @Override public ConfigParams getConfigParams() {
 141         return configParams;
 142     }
 143
 144     @Override public void addToPeers(String name, String address) {
 145         peerAddresses.put(name, address);
 146     }
 147
 148     @Override public void removePeer(String name) {
 149         peerAddresses.remove(name);
 150     }
 151
 152     @Override public ActorSelection getPeerActorSelection(String peerId) {
 153         String peerAddress = getPeerAddress(peerId);
 154         if(peerAddress != null){
 155             return actorSelection(peerAddress);
 156         }
 157         return null;
 158     }
 159
 160     @Override public void setPeerAddress(String peerId, String peerAddress) {
 161         LOG.info("Peer address for peer {} set to {}", peerId, peerAddress);
 162         checkState(peerAddresses.containsKey(peerId), peerId + " is unknown");
 163
 164         peerAddresses.put(peerId, peerAddress);
 165     }
 166
 167     @Override
 168     public SnapshotManager getSnapshotManager() {
 169         if(snapshotManager == null){
 170             snapshotManager = new SnapshotManager(this, LOG);
 171         }
 172         return snapshotManager;
 173     }
 174
 175     @Override
 176     public long getTotalMemory() {
 177         return totalMemoryRetriever != null ? totalMemoryRetriever.get() : Runtime.getRuntime().totalMemory();
 178     }
 179
 180     @Override
 181     public void setTotalMemoryRetriever(Supplier<Long> retriever) {
 182         totalMemoryRetriever = retriever;
 183     }
 184
 185     @Override
 186     public boolean hasFollowers() {
 187         return getPeerAddresses().keySet().size() > 0;
 188     }
 189
 190     @Override
 191     public DataPersistenceProvider getPersistenceProvider() {
 192         return persistenceProvider;
 193     }
 194 }