ONOS-4086 to ONOS-4091, ONOS-4098 to ONOS-4100:ISIS controller implementation

Change-Id: I7be52805652fe762baf808515401d6b5042b2aa5
diff --git a/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/IsisPipelineFactory.java b/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/IsisPipelineFactory.java
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+++ b/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/IsisPipelineFactory.java
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+/*
+ * 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.isis.controller.impl;
+
+import org.jboss.netty.channel.ChannelPipeline;
+import org.jboss.netty.channel.ChannelPipelineFactory;
+import org.jboss.netty.channel.Channels;
+
+/**
+ * Creates a ChannelPipeline for a client-side ISIS channel.
+ */
+public class IsisPipelineFactory implements ChannelPipelineFactory {
+    private IsisChannelHandler isisChannelHandler;
+
+    /**
+     * Creates an instance of ISIS channel pipeline factory.
+     *
+     * @param isisChannelHandler ISIS channel handler instance
+     */
+    public IsisPipelineFactory(IsisChannelHandler isisChannelHandler) {
+        this.isisChannelHandler = isisChannelHandler;
+    }
+
+    @Override
+    public ChannelPipeline getPipeline() throws Exception {
+        ChannelPipeline pipeline = Channels.pipeline();
+        pipeline.addLast("encoder", new IsisMessageDecoder());
+        pipeline.addLast("decoder", new IsisMessageEncoder());
+        pipeline.addLast("handler", isisChannelHandler);
+
+        return pipeline;
+    }
+}
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