Timestamp, OnosTimestamp and it's serializer
Change-Id: I02e3563229ddae8fc4b705c708f4066d82e24cf4
diff --git a/core/store/src/main/java/org/onlab/onos/store/impl/OnosTimestamp.java b/core/store/src/main/java/org/onlab/onos/store/impl/OnosTimestamp.java
new file mode 100644
index 0000000..f994e02
--- /dev/null
+++ b/core/store/src/main/java/org/onlab/onos/store/impl/OnosTimestamp.java
@@ -0,0 +1,105 @@
+package org.onlab.onos.store.impl;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.base.Preconditions.checkArgument;
+
+import java.util.Objects;
+
+import org.onlab.onos.net.ElementId;
+import org.onlab.onos.store.Timestamp;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ComparisonChain;
+
+// If it is store specific, implement serializable interfaces?
+/**
+ * Default implementation of Timestamp.
+ */
+public final class OnosTimestamp implements Timestamp {
+
+ private final ElementId id;
+ private final int termNumber;
+ private final int sequenceNumber;
+
+ /**
+ * Default version tuple.
+ *
+ * @param id identifier of the element
+ * @param termNumber the mastership termNumber
+ * @param sequenceNumber the sequenceNumber number within the termNumber
+ */
+ public OnosTimestamp(ElementId id, int termNumber, int sequenceNumber) {
+ this.id = checkNotNull(id);
+ this.termNumber = termNumber;
+ this.sequenceNumber = sequenceNumber;
+ }
+
+ @Override
+ public int compareTo(Timestamp o) {
+ checkArgument(o instanceof OnosTimestamp, "Must be OnosTimestamp", o);
+ OnosTimestamp that = (OnosTimestamp) o;
+ checkArgument(this.id.equals(that.id),
+ "Cannot compare version for different element this:%s, that:%s",
+ this, that);
+
+ return ComparisonChain.start()
+ .compare(this.termNumber, that.termNumber)
+ .compare(this.sequenceNumber, that.sequenceNumber)
+ .result();
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(id, termNumber, sequenceNumber);
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (!(obj instanceof OnosTimestamp)) {
+ return false;
+ }
+ OnosTimestamp that = (OnosTimestamp) obj;
+ return Objects.equals(this.id, that.id) &&
+ Objects.equals(this.termNumber, that.termNumber) &&
+ Objects.equals(this.sequenceNumber, that.sequenceNumber);
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("id", id)
+ .add("termNumber", termNumber)
+ .add("sequenceNumber", sequenceNumber)
+ .toString();
+ }
+
+ /**
+ * Returns the element.
+ *
+ * @return element identifier
+ */
+ public ElementId id() {
+ return id;
+ }
+
+ /**
+ * Returns the termNumber.
+ *
+ * @return termNumber
+ */
+ public int termNumber() {
+ return termNumber;
+ }
+
+ /**
+ * Returns the sequenceNumber number.
+ *
+ * @return sequenceNumber
+ */
+ public int sequenceNumber() {
+ return sequenceNumber;
+ }
+}