-/* Copyright (C)2013 Pantheon Technologies, s.r.o. All rights reserved. */\r
-package org.opendaylight.openflowjava.protocol.impl.serialization.factories;\r
-\r
-import java.util.Iterator;\r
-import java.util.List;\r
-\r
-import io.netty.buffer.ByteBuf;\r
-\r
-import org.opendaylight.openflowjava.protocol.impl.serialization.OFSerializer;\r
-import org.opendaylight.openflowjava.protocol.impl.util.ByteBufUtils;\r
-import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloInput;\r
-import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.hello.Elements;\r
-\r
-/**\r
- * @author michal.polkorab\r
- *\r
- */\r
-public class HelloInputMessageFactory implements OFSerializer<HelloInput>{\r
-\r
- /** Code type of Hello message */\r
- private static final byte MESSAGE_TYPE = 0;\r
- private static int MESSAGE_LENGTH = 0;\r
- private static HelloInputMessageFactory instance;\r
- \r
- private HelloInputMessageFactory() {\r
- // do nothing, just singleton\r
- }\r
- \r
- /**\r
- * @return singleton factory\r
- */\r
- public static HelloInputMessageFactory getInstance() {\r
- if (instance == null) {\r
- instance = new HelloInputMessageFactory();\r
- }\r
- return instance;\r
- }\r
-\r
- @Override\r
- public void messageToBuffer(short version, ByteBuf out, HelloInput message) {\r
- computeElementsLength(message.getElements());\r
- ByteBufUtils.writeOFHeader(instance, message, out);\r
- encodeElementsList(message.getElements(), out);\r
- }\r
-\r
- @Override\r
- public int computeLength() {\r
- return MESSAGE_LENGTH;\r
- }\r
-\r
- @Override\r
- public byte getMessageType() {\r
- return MESSAGE_TYPE;\r
- }\r
- \r
- private static int computeElementsLength(List<Elements> elements) {\r
- int versionBitmapSize = 0;\r
- final int OFHeaderSize = 8;\r
- int typeSize = 0;\r
- \r
- if (elements != null) {\r
- typeSize = 2;\r
- versionBitmapSize = elements.get(0).getVersionBitmap().size()/Byte.SIZE;\r
- } \r
- MESSAGE_LENGTH = OFHeaderSize + versionBitmapSize + typeSize;\r
- return MESSAGE_LENGTH;\r
- }\r
- \r
- private static void encodeElementsList(List<Elements> elements, ByteBuf output) {\r
- int[] versionBitmap;\r
- int arraySize = 0;\r
- if (elements != null) {\r
- for (Iterator<Elements> iterator = elements.iterator(); iterator.hasNext();) {\r
- Elements currElement = iterator.next();\r
- output.writeShort(currElement.getType().getIntValue());\r
- versionBitmap = ByteBufUtils.fillBitMaskFromList(currElement.getVersionBitmap());\r
- arraySize = (versionBitmap.length/Integer.SIZE);\r
- for (int i = 0; i < arraySize; i++) {\r
- output.writeInt(versionBitmap[i]);\r
- }\r
- } \r
- }\r
- }\r
-}\r
+/*
+ * Copyright (c) 2013 Pantheon Technologies 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.openflowjava.protocol.impl.serialization.factories;
+
+import io.netty.buffer.ByteBuf;
+
+import org.opendaylight.openflowjava.protocol.api.extensibility.OFSerializer;
+import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
+import org.opendaylight.openflowjava.util.ByteBufUtils;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.HelloElementType;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloInput;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.hello.Elements;
+
+/**
+ * Translates Hello messages
+ * @author michal.polkorab
+ * @author timotej.kubas
+ */
+public class HelloInputMessageFactory implements OFSerializer<HelloInput>{
+
+ /** Code type of Hello message */
+ private static final byte MESSAGE_TYPE = 0;
+ private static final byte HELLO_ELEMENT_HEADER_SIZE = 4;
+
+ private static void serializeElementsList(HelloInput message, ByteBuf output) {
+ int[] versionBitmap;
+ if (message.getElements() != null) {
+ for (Elements currElement : message.getElements()) {
+ int elementStartIndex = output.writerIndex();
+ output.writeShort(currElement.getType().getIntValue());
+ if (currElement.getType().equals(HelloElementType.VERSIONBITMAP)) {
+ int elementLengthIndex = output.writerIndex();
+ output.writeShort(EncodeConstants.EMPTY_LENGTH);
+ versionBitmap = ByteBufUtils.fillBitMaskFromList(currElement.getVersionBitmap());
+ for (int i = 0; i < versionBitmap.length; i++) {
+ output.writeInt(versionBitmap[i]);
+ }
+ int length = output.writerIndex() - elementStartIndex;
+ int padding = length - versionBitmap.length * 4 - HELLO_ELEMENT_HEADER_SIZE;
+ output.writeZero(padding);
+ output.setShort(elementLengthIndex, output.writerIndex() - elementStartIndex);
+ }
+ }
+ }
+ }
+
+ @Override
+ public void serialize(HelloInput message, ByteBuf outBuffer) {
+ int startWriterIndex = outBuffer.writerIndex();
+ ByteBufUtils.writeOFHeader(MESSAGE_TYPE, message, outBuffer, EncodeConstants.EMPTY_LENGTH);
+ serializeElementsList(message, outBuffer);
+ int endWriterIndex = outBuffer.writerIndex();
+ int paddingRemainder = (endWriterIndex - startWriterIndex) % EncodeConstants.PADDING;
+ if (paddingRemainder != 0) {
+ outBuffer.writeZero(EncodeConstants.PADDING - paddingRemainder);
+ }
+ ByteBufUtils.updateOFHeaderLength(outBuffer);
+ }
+
+}
Code Review / openflowjava.git / blobdiff