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