2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
9 package org.opendaylight.controller.cluster.raft;
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;
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;
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;
29 public class RaftActorContextImpl implements RaftActorContext {
31 private final ActorRef actor;
33 private final ActorContext context;
35 private final String id;
37 private final ElectionTerm termInformation;
39 private long commitIndex;
41 private long lastApplied;
43 private ReplicatedLog replicatedLog;
45 private final Map<String, PeerInfo> peerInfoMap = new HashMap<>();
47 private final Logger LOG;
49 private ConfigParams configParams;
52 private Supplier<Long> totalMemoryRetriever;
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;
58 private final DataPersistenceProvider persistenceProvider;
60 private short payloadVersion;
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) {
66 this.context = context;
68 this.termInformation = termInformation;
69 this.commitIndex = commitIndex;
70 this.lastApplied = lastApplied;
71 this.configParams = configParams;
72 this.persistenceProvider = persistenceProvider;
75 for(Map.Entry<String, String> e: peerAddresses.entrySet()) {
76 peerInfoMap.put(e.getKey(), new PeerInfo(e.getKey(), e.getValue(), VotingState.VOTING));
80 public void setPayloadVersion(short payloadVersion) {
81 this.payloadVersion = payloadVersion;
85 public short getPayloadVersion() {
86 return payloadVersion;
89 public void setConfigParams(ConfigParams configParams) {
90 this.configParams = configParams;
94 public ActorRef actorOf(Props props){
95 return context.actorOf(props);
99 public ActorSelection actorSelection(String path){
100 return context.actorSelection(path);
104 public String getId() {
109 public ActorRef getActor() {
114 public ElectionTerm getTermInformation() {
115 return termInformation;
119 public long getCommitIndex() {
123 @Override public void setCommitIndex(long commitIndex) {
124 this.commitIndex = commitIndex;
128 public long getLastApplied() {
133 public void setLastApplied(long lastApplied) {
134 this.lastApplied = lastApplied;
138 public void setReplicatedLog(ReplicatedLog replicatedLog) {
139 this.replicatedLog = replicatedLog;
143 public ReplicatedLog getReplicatedLog() {
144 return replicatedLog;
147 @Override public ActorSystem getActorSystem() {
148 return context.system();
151 @Override public Logger getLogger() {
156 public Collection<String> getPeerIds() {
157 return peerInfoMap.keySet();
161 public Collection<PeerInfo> getPeers() {
162 return peerInfoMap.values();
166 public PeerInfo getPeerInfo(String peerId) {
167 return peerInfoMap.get(peerId);
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);
186 public void updatePeerIds(ServerConfigurationPayload serverConfig){
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);
195 this.getPeerInfo(server.getId()).setVotingState(votingState);
196 currentPeers.remove(server.getId());
201 for(String peerIdToRemove: currentPeers) {
202 this.removePeer(peerIdToRemove);
206 @Override public ConfigParams getConfigParams() {
211 public void addToPeers(String id, String address, VotingState votingState) {
212 peerInfoMap.put(id, new PeerInfo(id, address, votingState));
215 @Override public void removePeer(String name) {
216 peerInfoMap.remove(name);
219 @Override public ActorSelection getPeerActorSelection(String peerId) {
220 String peerAddress = getPeerAddress(peerId);
221 if(peerAddress != null){
222 return actorSelection(peerAddress);
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);
237 public SnapshotManager getSnapshotManager() {
238 if(snapshotManager == null){
239 snapshotManager = new SnapshotManager(this, LOG);
241 return snapshotManager;
245 public long getTotalMemory() {
246 return totalMemoryRetriever != null ? totalMemoryRetriever.get() : Runtime.getRuntime().totalMemory();
250 public void setTotalMemoryRetriever(Supplier<Long> retriever) {
251 totalMemoryRetriever = retriever;
255 public boolean hasFollowers() {
256 return getPeerIds().size() > 0;
260 public DataPersistenceProvider getPersistenceProvider() {
261 return persistenceProvider;
266 public RaftPolicy getRaftPolicy() {
267 return configParams.getRaftPolicy();