[ONOS-4258] Initial implementation of supporting extension in REST

- Support Nicira extension

Change-Id: I62bf4417e43459727ce7d4b1ac929c6cf0b7826f
diff --git a/drivers/default/src/main/java/org/onosproject/driver/DefaultCodecRegister.java b/drivers/default/src/main/java/org/onosproject/driver/DefaultCodecRegister.java
new file mode 100644
index 0000000..b37bb62
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/DefaultCodecRegister.java
@@ -0,0 +1,84 @@
+/*
+ * 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;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onosproject.codec.CodecService;
+import org.onosproject.driver.extensions.MoveExtensionTreatment;
+import org.onosproject.driver.extensions.NiciraMatchNshSi;
+import org.onosproject.driver.extensions.NiciraMatchNshSpi;
+import org.onosproject.driver.extensions.NiciraResubmit;
+import org.onosproject.driver.extensions.NiciraResubmitTable;
+import org.onosproject.driver.extensions.NiciraSetNshContextHeader;
+import org.onosproject.driver.extensions.NiciraSetNshSi;
+import org.onosproject.driver.extensions.NiciraSetNshSpi;
+import org.onosproject.driver.extensions.NiciraSetTunnelDst;
+import org.onosproject.driver.extensions.codec.MoveExtensionTreatmentCodec;
+import org.onosproject.driver.extensions.codec.NiciraMatchNshSiCodec;
+import org.onosproject.driver.extensions.codec.NiciraMatchNshSpiCodec;
+import org.onosproject.driver.extensions.codec.NiciraResubmitCodec;
+import org.onosproject.driver.extensions.codec.NiciraResubmitTableCodec;
+import org.onosproject.driver.extensions.codec.NiciraSetNshContextHeaderCodec;
+import org.onosproject.driver.extensions.codec.NiciraSetNshSiCodec;
+import org.onosproject.driver.extensions.codec.NiciraSetNshSpiCodec;
+import org.onosproject.driver.extensions.codec.NiciraSetTunnelDstCodec;
+import org.slf4j.Logger;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Codec register for default drivers.
+ */
+@Component(immediate = true)
+public class DefaultCodecRegister {
+
+    private final Logger log = getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CodecService codecService;
+
+    @Activate
+    public void activate() {
+        codecService.registerCodec(MoveExtensionTreatment.class, new MoveExtensionTreatmentCodec());
+        codecService.registerCodec(NiciraMatchNshSi.class, new NiciraMatchNshSiCodec());
+        codecService.registerCodec(NiciraMatchNshSpi.class, new NiciraMatchNshSpiCodec());
+        codecService.registerCodec(NiciraResubmit.class, new NiciraResubmitCodec());
+        codecService.registerCodec(NiciraResubmitTable.class, new NiciraResubmitTableCodec());
+        codecService.registerCodec(NiciraSetNshSi.class, new NiciraSetNshSiCodec());
+        codecService.registerCodec(NiciraSetNshSpi.class, new NiciraSetNshSpiCodec());
+        codecService.registerCodec(NiciraSetTunnelDst.class, new NiciraSetTunnelDstCodec());
+        codecService.registerCodec(NiciraSetNshContextHeader.class, new NiciraSetNshContextHeaderCodec());
+        log.info("Registered default driver codecs.");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        codecService.unregisterCodec(MoveExtensionTreatment.class);
+        codecService.unregisterCodec(NiciraMatchNshSi.class);
+        codecService.unregisterCodec(NiciraMatchNshSpi.class);
+        codecService.unregisterCodec(NiciraResubmit.class);
+        codecService.unregisterCodec(NiciraResubmitTable.class);
+        codecService.unregisterCodec(NiciraSetNshSi.class);
+        codecService.unregisterCodec(NiciraSetNshSpi.class);
+        codecService.unregisterCodec(NiciraSetTunnelDst.class);
+        codecService.unregisterCodec(NiciraSetNshContextHeader.class);
+        log.info("Unregistered default driver codecs.");
+    }
+}