Initial message bus implementation

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

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/AbstractReplicatedLogImpl.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/AbstractReplicatedLogImpl.java
index a2c9d660ad8d2472f7b9a83ab3f175b1883ad1f6..d1c3fefee8309208a6df6fe9b539a10ee000ddef 100644 (file)
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/AbstractReplicatedLogImpl.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/AbstractReplicatedLogImpl.java
@@ -8,6 +8,7 @@
 package org.opendaylight.controller.cluster.raft;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -19,13 +20,14 @@ public abstract class AbstractReplicatedLogImpl implements ReplicatedLog {
     // We define this as ArrayList so we can use ensureCapacity.
     protected ArrayList<ReplicatedLogEntry> journal;
 
-    protected long snapshotIndex = -1;
-    protected long snapshotTerm = -1;
+    private long snapshotIndex = -1;
+    private long snapshotTerm = -1;
 
     // to be used for rollback during save snapshot failure
-    protected ArrayList<ReplicatedLogEntry> snapshottedJournal;
-    protected long previousSnapshotIndex = -1;
-    protected long previousSnapshotTerm = -1;
+    private ArrayList<ReplicatedLogEntry> snapshottedJournal;
+    private long previousSnapshotIndex = -1;
+    private long previousSnapshotTerm = -1;
+    protected int dataSize = 0;
 
     public AbstractReplicatedLogImpl(long snapshotIndex,
         long snapshotTerm, List<ReplicatedLogEntry> unAppliedEntries) {
@@ -35,7 +37,7 @@ public abstract class AbstractReplicatedLogImpl implements ReplicatedLog {
     }
 
     public AbstractReplicatedLogImpl() {
-        this.journal = new ArrayList<>();
+        this(-1L, -1L, Collections.<ReplicatedLogEntry>emptyList());
     }
 
     protected int adjustedIndex(long logEntryIndex) {
@@ -115,19 +117,18 @@ public abstract class AbstractReplicatedLogImpl implements ReplicatedLog {
     public List<ReplicatedLogEntry> getFrom(long logEntryIndex, int max) {
         int adjustedIndex = adjustedIndex(logEntryIndex);
         int size = journal.size();
-        List<ReplicatedLogEntry> entries = new ArrayList<>(100);
         if (adjustedIndex >= 0 && adjustedIndex < size) {
             // physical index should be less than list size and >= 0
             int maxIndex = adjustedIndex + max;
             if(maxIndex > size){
                 maxIndex = size;
             }
-            entries.addAll(journal.subList(adjustedIndex, maxIndex));
+            return new ArrayList<>(journal.subList(adjustedIndex, maxIndex));
+        } else {
+            return Collections.emptyList();
         }
-        return entries;
     }
 
-
     @Override
     public long size() {
        return journal.size();
@@ -198,6 +199,7 @@ public abstract class AbstractReplicatedLogImpl implements ReplicatedLog {
         snapshottedJournal = null;
         previousSnapshotIndex = -1;
         previousSnapshotTerm = -1;
+        dataSize = 0;
     }
 
     @Override