Add basic netty replication utility

[mdsal.git] / replicate / mdsal-replicate-netty / src / main / java / org / opendaylight / mdsal / replicate / netty / MessageFrameEncoder.java

diff --git a/replicate/mdsal-replicate-netty/src/main/java/org/opendaylight/mdsal/replicate/netty/MessageFrameEncoder.java b/replicate/mdsal-replicate-netty/src/main/java/org/opendaylight/mdsal/replicate/netty/MessageFrameEncoder.java
new file mode 100644 (file)
index 0000000..f6d9347
--- /dev/null
+++ b/replicate/mdsal-replicate-netty/src/main/java/org/opendaylight/mdsal/replicate/netty/MessageFrameEncoder.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2020 PANTHEON.tech, s.r.o. 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.mdsal.replicate.netty;
+
+import io.netty.channel.ChannelHandler.Sharable;
+import io.netty.handler.codec.LengthFieldPrepender;
+
+@Sharable
+final class MessageFrameEncoder extends LengthFieldPrepender {
+    private static final MessageFrameEncoder INSTANCE = new MessageFrameEncoder();
+
+    private MessageFrameEncoder() {
+        super(Constants.LENGTH_FIELD_LENGTH);
+    }
+
+    static MessageFrameEncoder instance() {
+        return INSTANCE;
+    }
+}