Added default link description & model entities.
diff --git a/net/api/src/main/java/org/onlab/onos/net/link/DefaultLinkDescription.java b/net/api/src/main/java/org/onlab/onos/net/link/DefaultLinkDescription.java
new file mode 100644
index 0000000..3ed7225
--- /dev/null
+++ b/net/api/src/main/java/org/onlab/onos/net/link/DefaultLinkDescription.java
@@ -0,0 +1,34 @@
+package org.onlab.onos.net.link;
+
+import org.onlab.onos.net.ConnectPoint;
+
+/**
+ * Default implementation of immutable link description entity.
+ */
+public class DefaultLinkDescription implements LinkDescription {
+
+ private ConnectPoint src;
+ private ConnectPoint dst;
+
+ /**
+ * Creates a link description using the supplied information.
+ *
+ * @param src link source
+ * @param dst link destination
+ */
+ public DefaultLinkDescription(ConnectPoint src, ConnectPoint dst) {
+ this.src = src;
+ this.dst = dst;
+ }
+
+ @Override
+ public ConnectPoint src() {
+ return src;
+ }
+
+ @Override
+ public ConnectPoint dst() {
+ return dst;
+ }
+
+}
diff --git a/net/api/src/main/java/org/onlab/onos/net/link/LinkDescription.java b/net/api/src/main/java/org/onlab/onos/net/link/LinkDescription.java
index 8d712f0..83af07c 100644
--- a/net/api/src/main/java/org/onlab/onos/net/link/LinkDescription.java
+++ b/net/api/src/main/java/org/onlab/onos/net/link/LinkDescription.java
@@ -1,17 +1,25 @@
package org.onlab.onos.net.link;
+import org.onlab.onos.net.ConnectPoint;
+
/**
* Describes an infrastructure link.
*/
public interface LinkDescription {
- // TODO: src, dst connection points, which are pairs of (DeviceId, PortNumber)
+ /**
+ * Returns the link source.
+ *
+ * @return links source
+ */
+ ConnectPoint src();
-// On the north:
-// Link = (ConnectPoint src, ConnectPoint dst);
-// ConnectPoint = (DeviceId, PortNumber);
+ /**
+ * Returns the link destination.
+ *
+ * @return links destination
+ */
+ ConnectPoint dst();
-// On the south
-// LinkDescription ~ Link
-
+ // Add further link attributes
}