Refactor LISP package to separate ctrl interface and impl classes

Change-Id: I4e94ff54299e886cd0e8b3ce38591b0900290f54
diff --git a/protocols/lisp/ctl/src/main/java/org/onosproject/lisp/ctl/impl/LispChannelInitializer.java b/protocols/lisp/ctl/src/main/java/org/onosproject/lisp/ctl/impl/LispChannelInitializer.java
new file mode 100644
index 0000000..d153546
--- /dev/null
+++ b/protocols/lisp/ctl/src/main/java/org/onosproject/lisp/ctl/impl/LispChannelInitializer.java
@@ -0,0 +1,44 @@
+/*
+ * 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.lisp.ctl.impl;
+
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelPipeline;
+import io.netty.channel.socket.nio.NioDatagramChannel;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Creates a ChannelInitializer for a server-side LISP channel.
+ */
+public final class LispChannelInitializer extends ChannelInitializer<NioDatagramChannel> {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+    private static final String LISP_MESSAGE_DECODER = "lispmessagedecoder";
+    private static final String LISP_MESSAGE_ENCODER = "lispmessageencoder";
+    private static final String LISP_CHANNEL_HANDLER = "handler";
+
+    @Override
+    protected void initChannel(NioDatagramChannel channel) throws Exception {
+        ChannelPipeline pipeline = channel.pipeline();
+
+        LispChannelHandler handler = new LispChannelHandler();
+
+        pipeline.addLast(LISP_MESSAGE_DECODER, new LispMessageDecoder());
+        pipeline.addLast(LISP_MESSAGE_ENCODER, new LispMessageEncoder());
+        pipeline.addLast(LISP_CHANNEL_HANDLER, handler);
+    }
+}