org.opendaylight.protocol.pcep.spi.MessageUtil Maven / Gradle / Ivy
/*
* 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.protocol.pcep.spi;
import com.google.common.base.Preconditions;
import io.netty.buffer.ByteBuf;
public final class MessageUtil {
private static final int VERSION_SF_LENGTH = 3;
private MessageUtil() {
}
public static void formatMessage(final int messageType, final ByteBuf body, final ByteBuf out) {
final int msgLength = body.writerIndex();
out.writeByte(PCEPMessageConstants.PCEP_VERSION << Byte.SIZE - VERSION_SF_LENGTH);
out.writeByte(messageType);
out.writeShort(msgLength + PCEPMessageConstants.COMMON_HEADER_LENGTH);
Preconditions.checkState(out.writerIndex() == PCEPMessageConstants.COMMON_HEADER_LENGTH);
out.writeBytes(body);
}
}