Bump persisted PayloadVersion

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

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/Snapshot.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/Snapshot.java
index aa3500e33a1789ed10ade94f8a3cbc59a23836f7..091009e2bd31e3898af14552874bf6cc17597898 100644 (file)
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/Snapshot.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/Snapshot.java
@@ -22,6 +22,7 @@ import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payloa
  *
  * @author Thomas Pantelis
  */
+// Not final for mocking
 public class Snapshot implements Serializable {
 
     /**
@@ -30,6 +31,15 @@ public class Snapshot implements Serializable {
      * @author Thomas Pantelis
      */
     public interface State extends Serializable {
+        /**
+         * Indicate whether the snapshot requires migration, i.e. a new snapshot should be created after recovery.
+         * Default implementation returns false, i.e. do not re-snapshot.
+         *
+         * @return True if complete recovery based upon this snapshot should trigger a new snapshot.
+         */
+        default boolean needsMigration() {
+            return false;
+        }
     }
 
     private static final class Proxy implements Externalizable {
@@ -108,9 +118,9 @@ public class Snapshot implements Serializable {
     private final String electionVotedFor;
     private final ServerConfigurationPayload serverConfig;
 
-    private Snapshot(State state, List<ReplicatedLogEntry> unAppliedEntries, long lastIndex, long lastTerm,
-            long lastAppliedIndex, long lastAppliedTerm, long electionTerm, String electionVotedFor,
-            ServerConfigurationPayload serverConfig) {
+    Snapshot(final State state, final List<ReplicatedLogEntry> unAppliedEntries, final long lastIndex,
+            final long lastTerm, final long lastAppliedIndex, final long lastAppliedTerm, final long electionTerm,
+            final String electionVotedFor, final ServerConfigurationPayload serverConfig) {
         this.state = state;
         this.unAppliedEntries = unAppliedEntries;
         this.lastIndex = lastIndex;
@@ -122,9 +132,9 @@ public class Snapshot implements Serializable {
         this.serverConfig = serverConfig;
     }
 
-    public static Snapshot create(State state, List<ReplicatedLogEntry> entries, long lastIndex, long lastTerm,
-            long lastAppliedIndex, long lastAppliedTerm, long electionTerm, String electionVotedFor,
-            ServerConfigurationPayload serverConfig) {
+    public static Snapshot create(final State state, final List<ReplicatedLogEntry> entries, final long lastIndex,
+            final long lastTerm, final long lastAppliedIndex, final long lastAppliedTerm, final long electionTerm,
+            final String electionVotedFor, final ServerConfigurationPayload serverConfig) {
         return new Snapshot(state, entries, lastIndex, lastTerm, lastAppliedIndex, lastAppliedTerm,
                 electionTerm, electionVotedFor, serverConfig);
     }