clean test environment
[transportpce.git] / tests / honeynode / 2.2.1 / netconf-netty-util / src / main / java / org / opendaylight / netconf / nettyutil / handler / NetconfHelloMessageToXMLEncoder.java
diff --git a/tests/honeynode/2.2.1/netconf-netty-util/src/main/java/org/opendaylight/netconf/nettyutil/handler/NetconfHelloMessageToXMLEncoder.java b/tests/honeynode/2.2.1/netconf-netty-util/src/main/java/org/opendaylight/netconf/nettyutil/handler/NetconfHelloMessageToXMLEncoder.java
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+/*
+ * Copyright (c) 2014 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.netconf.nettyutil.handler;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import javax.xml.transform.TransformerException;
+import org.opendaylight.netconf.api.NetconfMessage;
+import org.opendaylight.netconf.api.messages.NetconfHelloMessage;
+import org.opendaylight.netconf.api.messages.NetconfHelloMessageAdditionalHeader;
+
+/**
+ * Customized NetconfMessageToXMLEncoder that serializes additional header with
+ * session metadata along with
+ * {@link NetconfHelloMessage}
+ * . Used by netconf clients to send information about the user, ip address,
+ * protocol etc.
+ *
+ * <p>
+ * Hello message with header example:
+ *
+ * <p>
+ *
+ * <pre>
+ * {@code
+ * [tomas;10.0.0.0/10000;tcp;1000;1000;;/home/tomas;;]
+ * < hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
+ * < capabilities>
+ * < capability>urn:ietf:params:netconf:base:1.0< /capability>
+ * < /capabilities>
+ * < /hello>
+ * }
+ * </pre>
+ */
+public final class NetconfHelloMessageToXMLEncoder extends NetconfMessageToXMLEncoder {
+    @Override
+    @VisibleForTesting
+    public void encode(ChannelHandlerContext ctx, NetconfMessage msg, ByteBuf out)
+            throws IOException, TransformerException {
+        Preconditions.checkState(msg instanceof NetconfHelloMessage, "Netconf message of type %s expected, was %s",
+                NetconfHelloMessage.class, msg.getClass());
+        Optional<NetconfHelloMessageAdditionalHeader> headerOptional = ((NetconfHelloMessage) msg)
+                .getAdditionalHeader();
+
+        // If additional header present, serialize it along with netconf hello message
+        if (headerOptional.isPresent()) {
+            out.writeBytes(headerOptional.get().toFormattedString().getBytes(StandardCharsets.UTF_8));
+        }
+
+        super.encode(ctx, msg, out);
+    }
+}