renamed OnosTimestamp -> MastershipBasedTimestamp

Change-Id: Ie6ee5d85bc0f5aadfa32e27e1d31e3c1d5c9fea8
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MastershipBasedTimestampSerializer.java b/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MastershipBasedTimestampSerializer.java
new file mode 100644
index 0000000..9250076
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/serializers/MastershipBasedTimestampSerializer.java
@@ -0,0 +1,36 @@
+package org.onlab.onos.store.serializers;
+
+import org.onlab.onos.store.common.impl.MastershipBasedTimestamp;
+
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.Serializer;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+
+// To be used if Timestamp ever needs to cross bundle boundary.
+/**
+ * Kryo Serializer for {@link MastershipBasedTimestamp}.
+ */
+public class MastershipBasedTimestampSerializer extends Serializer<MastershipBasedTimestamp> {
+
+    /**
+     * Default constructor.
+     */
+    public MastershipBasedTimestampSerializer() {
+        // non-null, immutable
+        super(false, true);
+    }
+
+    @Override
+    public void write(Kryo kryo, Output output, MastershipBasedTimestamp object) {
+        output.writeInt(object.termNumber());
+        output.writeInt(object.sequenceNumber());
+    }
+
+    @Override
+    public MastershipBasedTimestamp read(Kryo kryo, Input input, Class<MastershipBasedTimestamp> type) {
+        final int term = input.readInt();
+        final int sequence = input.readInt();
+        return new MastershipBasedTimestamp(term, sequence);
+    }
+}