Take snapshot after recovery on migrated messages

[controller.git] / opendaylight / md-sal / sal-akka-raft / src / main / java / org / opendaylight / controller / cluster / raft / RaftActorContextImpl.java

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/RaftActorContextImpl.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/RaftActorContextImpl.java
index 4677ea946e65cf352779d027744e1c7e232bc572..926e9748d477d8c54fcbde9265197e97a1369063 100644 (file)
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/RaftActorContextImpl.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/RaftActorContextImpl.java
@@ -13,21 +13,27 @@ import akka.actor.ActorRef;
 import akka.actor.ActorSelection;
 import akka.actor.ActorSystem;
 import akka.actor.Props;
+import akka.cluster.Cluster;
 import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.Supplier;
+import com.google.common.base.Preconditions;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Set;
+import java.util.function.LongSupplier;
 import org.opendaylight.controller.cluster.DataPersistenceProvider;
-import org.opendaylight.controller.cluster.raft.ServerConfigurationPayload.ServerInfo;
+import org.opendaylight.controller.cluster.raft.behaviors.RaftActorBehavior;
+import org.opendaylight.controller.cluster.raft.persisted.ServerConfigurationPayload;
+import org.opendaylight.controller.cluster.raft.persisted.ServerInfo;
 import org.opendaylight.controller.cluster.raft.policy.RaftPolicy;
 import org.slf4j.Logger;
 
 public class RaftActorContextImpl implements RaftActorContext {
+    private static final LongSupplier JVM_MEMORY_RETRIEVER = () -> Runtime.getRuntime().maxMemory();
 
     private final ActorRef actor;
 
@@ -52,7 +58,7 @@ public class RaftActorContextImpl implements RaftActorContext {
     private boolean dynamicServerConfiguration = false;
 
     @VisibleForTesting
-    private Supplier<Long> totalMemoryRetriever;
+    private LongSupplier totalMemoryRetriever = JVM_MEMORY_RETRIEVER;
 
     // Snapshot manager will need to be created on demand as it needs raft actor context which cannot
     // be passed to it in the constructor
@@ -64,6 +70,12 @@ public class RaftActorContextImpl implements RaftActorContext {
 
     private boolean votingMember = true;
 
+    private RaftActorBehavior currentBehavior;
+
+    private int numVotingPeers = -1;
+
+    private Optional<Cluster> cluster;
+
     public RaftActorContextImpl(ActorRef actor, ActorContext context, String id,
             ElectionTerm termInformation, long commitIndex, long lastApplied, Map<String, String> peerAddresses,
             ConfigParams configParams, DataPersistenceProvider persistenceProvider, Logger logger) {
@@ -82,6 +94,7 @@ public class RaftActorContextImpl implements RaftActorContext {
         }
     }
 
+    @VisibleForTesting
     public void setPayloadVersion(short payloadVersion) {
         this.payloadVersion = payloadVersion;
     }
@@ -115,6 +128,21 @@ public class RaftActorContextImpl implements RaftActorContext {
         return actor;
     }
 
+    @Override
+    public Optional<Cluster> getCluster() {
+        if(cluster == null) {
+            try {
+                cluster = Optional.of(Cluster.get(getActorSystem()));
+            } catch(Exception e) {
+                // An exception means there's no cluster configured. This will only happen in unit tests.
+                LOG.debug("{}: Could not obtain Cluster: {}", getId(), e);
+                cluster = Optional.empty();
+            }
+        }
+
+        return cluster;
+    }
+
     @Override
     public ElectionTerm getTermInformation() {
         return termInformation;
@@ -192,9 +220,11 @@ public class RaftActorContextImpl implements RaftActorContext {
     @Override
     public void updatePeerIds(ServerConfigurationPayload serverConfig){
         votingMember = true;
+        boolean foundSelf = false;
         Set<String> currentPeers = new HashSet<>(this.getPeerIds());
         for(ServerInfo server: serverConfig.getServerConfig()) {
             if(getId().equals(server.getId())) {
+                foundSelf = true;
                 if(!server.isVoting()) {
                     votingMember = false;
                 }
@@ -212,6 +242,13 @@ public class RaftActorContextImpl implements RaftActorContext {
         for(String peerIdToRemove: currentPeers) {
             this.removePeer(peerIdToRemove);
         }
+
+        if(!foundSelf) {
+            votingMember = false;
+        }
+
+        LOG.debug("{}: Updated server config: isVoting: {}, peers: {}", id, votingMember, peerInfoMap.values());
+
         setDynamicServerConfigurationInUse();
     }
 
@@ -222,6 +259,7 @@ public class RaftActorContextImpl implements RaftActorContext {
     @Override
     public void addToPeers(String id, String address, VotingState votingState) {
         peerInfoMap.put(id, new PeerInfo(id, address, votingState));
+        numVotingPeers = -1;
     }
 
     @Override
@@ -230,6 +268,7 @@ public class RaftActorContextImpl implements RaftActorContext {
             votingMember = false;
         } else {
             peerInfoMap.remove(name);
+            numVotingPeers = -1;
         }
     }
 
@@ -260,12 +299,12 @@ public class RaftActorContextImpl implements RaftActorContext {
 
     @Override
     public long getTotalMemory() {
-        return totalMemoryRetriever != null ? totalMemoryRetriever.get() : Runtime.getRuntime().totalMemory();
+        return totalMemoryRetriever.getAsLong();
     }
 
     @Override
-    public void setTotalMemoryRetriever(Supplier<Long> retriever) {
-        totalMemoryRetriever = retriever;
+    public void setTotalMemoryRetriever(LongSupplier retriever) {
+        totalMemoryRetriever = retriever == null ? JVM_MEMORY_RETRIEVER : retriever;
     }
 
     @Override
@@ -316,4 +355,37 @@ public class RaftActorContextImpl implements RaftActorContext {
     public boolean isVotingMember() {
         return votingMember;
     }
+
+    @Override
+    public boolean anyVotingPeers() {
+        if(numVotingPeers < 0) {
+            numVotingPeers = 0;
+            for(PeerInfo info: getPeers()) {
+                if(info.isVoting()) {
+                    numVotingPeers++;
+                }
+            }
+        }
+
+        return numVotingPeers > 0;
+    }
+
+    @Override
+    public RaftActorBehavior getCurrentBehavior() {
+        return currentBehavior;
+    }
+
+    void setCurrentBehavior(final RaftActorBehavior behavior) {
+        this.currentBehavior = Preconditions.checkNotNull(behavior);
+    }
+
+    void close() {
+        if (currentBehavior != null) {
+            try {
+                currentBehavior.close();
+            } catch (Exception e) {
+                LOG.debug("{}: Error closing behavior {}", getId(), currentBehavior.state());
+            }
+        }
+    }
 }