1 files changed, 74 insertions, 0 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/packet/MplsLabel.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/packet/MplsLabel.java
new file mode 100644
index 00000000..09a939fc
--- /dev/null
+++ b/framework/src/onos/utils/misc/src/main/java/org/onlab/packet/MplsLabel.java
@@ -0,0 +1,74 @@
+package org.onlab.packet;
+
+/*
+ * Copyright 2014-2015 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.
+ */
+
+/**
+ * Representation of a MPLS label.
+ */
+public class MplsLabel {
+
+    private final int mplsLabel;
+
+    // An MPLS Label maximum 20 bits.
+    public static final int MAX_MPLS = 0xFFFFF;
+
+    protected MplsLabel(int value) {
+        this.mplsLabel = value;
+    }
+
+    public static MplsLabel mplsLabel(int value) {
+
+        if (value < 0 || value > MAX_MPLS) {
+            String errorMsg = "MPLS label value " + value +
+                " is not in the interval [0, 0xFFFFF]";
+            throw new IllegalArgumentException(errorMsg);
+        }
+        return new MplsLabel(value);
+    }
+
+    public int toInt() {
+        return this.mplsLabel;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj instanceof MplsLabel) {
+
+            MplsLabel other = (MplsLabel) obj;
+
+            if (this.mplsLabel == other.mplsLabel) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        return this.mplsLabel;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(this.mplsLabel);
+    }
+}