Improve follower term conflict resolution

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

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLogImpl.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLogImpl.java
index 04606fbbabc61e6f47c9780cd9207c6ebfa5ae54..764bce1ddb97aa4af14620736a5e286d64d1a87a 100644 (file)
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLogImpl.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/ReplicatedLogImpl.java
@@ -14,11 +14,12 @@ import java.util.List;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import org.opendaylight.controller.cluster.raft.persisted.DeleteEntries;
+import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
 
 /**
  * Implementation of ReplicatedLog used by the RaftActor.
  */
-class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
+final class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
     private static final int DATA_SIZE_DIVIDER = 5;
 
     private final RaftActorContext context;
@@ -53,12 +54,17 @@ class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
     }
 
     @Override
-    public void captureSnapshotIfReady(final ReplicatedLogEntry replicatedLogEntry) {
+    public boolean shouldCaptureSnapshot(final long logIndex) {
         final ConfigParams config = context.getConfigParams();
-        final long journalSize = replicatedLogEntry.getIndex() + 1;
+        final long journalSize = logIndex + 1;
         final long dataThreshold = context.getTotalMemory() * config.getSnapshotDataThresholdPercentage() / 100;
 
-        if (journalSize % config.getSnapshotBatchCount() == 0 || getDataSizeForSnapshotCheck() > dataThreshold) {
+        return journalSize % config.getSnapshotBatchCount() == 0 || getDataSizeForSnapshotCheck() > dataThreshold;
+    }
+
+    @Override
+    public void captureSnapshotIfReady(final ReplicatedLogEntry replicatedLogEntry) {
+        if (shouldCaptureSnapshot(replicatedLogEntry.getIndex())) {
             boolean started = context.getSnapshotManager().capture(replicatedLogEntry,
                     context.getCurrentBehavior().getReplicatedToAllIndex());
             if (started && !context.hasFollowers()) {
@@ -88,7 +94,7 @@ class ReplicatedLogImpl extends AbstractReplicatedLogImpl {
 
     @Override
     public boolean appendAndPersist(@Nonnull final ReplicatedLogEntry replicatedLogEntry,
-            @Nullable final Procedure<ReplicatedLogEntry> callback, boolean doAsync)  {
+            @Nullable final Procedure<ReplicatedLogEntry> callback, final boolean doAsync)  {
 
         context.getLogger().debug("{}: Append log entry and persist {} ", context.getId(), replicatedLogEntry);