[CORD-545] Adds MPLS L2 Port support in ONOS core

Change-Id: I61d9b2c14580b4995fdcc96571745bfd00ee586f
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/Ofdpa3MatchMplsL2PortCodec.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/Ofdpa3MatchMplsL2PortCodec.java
new file mode 100644
index 0000000..b32bd14
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/Ofdpa3MatchMplsL2PortCodec.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2016-present 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.driver.extensions.codec;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.driver.extensions.Ofdpa3MatchMplsL2Port;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.onlab.util.Tools.nullIsIllegal;
+
+/**
+ * JSON Codec for Ofdpa match mpls l2 port class.
+ */
+public class Ofdpa3MatchMplsL2PortCodec extends JsonCodec<Ofdpa3MatchMplsL2Port> {
+
+    private static final String MPLS_L2_PORT = "mplsL2Port";
+    private static final String MISSING_MEMBER_MESSAGE = " member is required in Ofdpa3MatchMplsL2Port";
+    private static final String MISSING_MPLS_L2_PORT_MESSAGE = "MPLS L2 Port cannot be null";
+
+    @Override
+    public ObjectNode encode(Ofdpa3MatchMplsL2Port matchMplsL2Port, CodecContext context) {
+        checkNotNull(matchMplsL2Port, MISSING_MPLS_L2_PORT_MESSAGE);
+        return context.mapper().createObjectNode()
+                .put(MPLS_L2_PORT, matchMplsL2Port.mplsL2Port());
+    }
+
+    @Override
+    public Ofdpa3MatchMplsL2Port decode(ObjectNode json, CodecContext context) {
+        if (json == null || !json.isObject()) {
+            return null;
+        }
+
+        // parse ofdpa match mpls l2 port
+        int mplsL2Port = (int) nullIsIllegal(json.get(MPLS_L2_PORT),
+                MPLS_L2_PORT + MISSING_MEMBER_MESSAGE).asInt();
+        return new Ofdpa3MatchMplsL2Port(mplsL2Port);
+    }
+}