Initial code drop of netconf protocol implementation

[controller.git] / opendaylight / netconf / netconf-util / src / main / java / org / opendaylight / controller / netconf / util / AbstractChannelInitializer.java

diff --git a/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/AbstractChannelInitializer.java b/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/AbstractChannelInitializer.java
new file mode 100644 (file)
index 0000000..317a126
--- /dev/null
+++ b/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/AbstractChannelInitializer.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.netconf.util;
+
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLEngine;
+
+import org.opendaylight.controller.netconf.api.NetconfMessage;
+import org.opendaylight.controller.netconf.api.NetconfSession;
+import org.opendaylight.controller.netconf.util.messages.NetconfMessageFactory;
+import org.opendaylight.protocol.framework.ProtocolHandlerFactory;
+import org.opendaylight.protocol.framework.ProtocolMessageDecoder;
+import org.opendaylight.protocol.framework.ProtocolMessageEncoder;
+
+import com.google.common.base.Optional;
+
+import io.netty.channel.ChannelHandler;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.handler.ssl.SslHandler;
+import io.netty.util.concurrent.Promise;
+
+public abstract class AbstractChannelInitializer {
+
+    private final Optional<SSLContext> maybeContext;
+    private final NetconfHandlerFactory handlerFactory;
+
+    public AbstractChannelInitializer(Optional<SSLContext> maybeContext) {
+        this.maybeContext = maybeContext;
+        this.handlerFactory = new NetconfHandlerFactory(new NetconfMessageFactory());
+    }
+
+    public void initialize(SocketChannel ch, Promise<? extends NetconfSession> promise) {
+        if (maybeContext.isPresent()) {
+            initSsl(ch);
+        }
+
+        ch.pipeline().addLast("frameDecoder", NetconfMessageFactory.getDelimiterFrameDecoder());
+        ch.pipeline().addLast(handlerFactory.getDecoders());
+        initializeAfterDecoder(ch, promise);
+        ch.pipeline().addLast(handlerFactory.getEncoders());
+    }
+
+    protected abstract void initializeAfterDecoder(SocketChannel ch, Promise<? extends NetconfSession> promise);
+
+    private void initSsl(SocketChannel ch) {
+        SSLEngine sslEngine = maybeContext.get().createSSLEngine();
+        initSslEngine(sslEngine);
+        final SslHandler handler = new SslHandler(sslEngine);
+        ch.pipeline().addLast("ssl", handler);
+    }
+
+    protected abstract void initSslEngine(SSLEngine sslEngine);
+
+    private static final class NetconfHandlerFactory extends ProtocolHandlerFactory<NetconfMessage> {
+
+        public NetconfHandlerFactory(final NetconfMessageFactory msgFactory) {
+            super(msgFactory);
+        }
+
+        @Override
+        public ChannelHandler[] getEncoders() {
+            return new ChannelHandler[] { new ProtocolMessageEncoder(this.msgFactory) };
+        }
+
+        @Override
+        public ChannelHandler[] getDecoders() {
+            return new ChannelHandler[] { new ProtocolMessageDecoder(this.msgFactory) };
+        }
+    }
+}