1 files changed, 42 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/Path.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/Path.java
new file mode 100644
index 00000000..c9c20c4c
--- /dev/null
+++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/Path.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.net;
+
+import java.util.List;
+
+/**
+ * Representation of a contiguous directed path in a network. Path comprises
+ * of a sequence of links, where adjacent links must share the same device,
+ * meaning that destination of the source of one link must coincide with the
+ * destination of the previous link.
+ */
+public interface Path extends Link {
+
+    /**
+     * Returns sequence of links comprising the path.
+     *
+     * @return list of links
+     */
+    List<Link> links();
+
+    /**
+     * Returns the path cost as a unit-less value.
+     *
+     * @return unit-less path cost
+     */
+    double cost();
+
+}