api and manager for statistic service
Change-Id: If00b8b43a2bd780ae3c05321697896290fb0f415
diff --git a/core/api/src/main/java/org/onlab/onos/net/statistic/Load.java b/core/api/src/main/java/org/onlab/onos/net/statistic/Load.java
new file mode 100644
index 0000000..534b10c
--- /dev/null
+++ b/core/api/src/main/java/org/onlab/onos/net/statistic/Load.java
@@ -0,0 +1,20 @@
+package org.onlab.onos.net.statistic;
+
+/**
+ * Simple data repository for link load information.
+ */
+public interface Load {
+
+ /**
+ * Obtain the current observed rate on a link.
+ * @return long value
+ */
+ long rate();
+
+ /**
+ * Obtain the latest counter viewed on that link.
+ * @return long value
+ */
+ long latest();
+
+}