/*
* 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.extensibility.SerializerRegistry;
import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistryInjector;
import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
import org.opendaylight.openflowjava.util.ByteBufUtils;
import org.opendaylight.openflowjava.util.ExperimenterSerializerKeyFactory;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev150225.ExperimenterIdMeterBand;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.ExperimenterMeterBandSubType;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MeterFlags;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterBandCommons;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MeterModInput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.MeterBand;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandDropCase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandDscpRemarkCase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.MeterBandExperimenterCase;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.meter.band.drop._case.MeterBandDrop;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.meter.band.dscp.remark._case.MeterBandDscpRemark;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.band.header.meter.band.meter.band.experimenter._case.MeterBandExperimenter;
import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.meter.mod.Bands;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
/**
* Translates MeterMod messages
* @author timotej.kubas
* @author michal.polkorab
*/
public class MeterModInputMessageFactory implements OFSerializer<MeterModInput>,
SerializerRegistryInjector {
private static final Logger LOG = LoggerFactory
.getLogger(MeterModInputMessageFactory.class);
private static final byte MESSAGE_TYPE = 29;
private static final short LENGTH_OF_METER_BANDS = 16;
private static final short PADDING_IN_METER_BAND_DROP = 4;
private static final short PADDING_IN_METER_BAND_DSCP_REMARK = 3;
private SerializerRegistry registry;
@Override
public void serialize(final MeterModInput message, final ByteBuf outBuffer) {
ByteBufUtils.writeOFHeader(MESSAGE_TYPE, message, outBuffer, EncodeConstants.EMPTY_LENGTH);
outBuffer.writeShort(message.getCommand().getIntValue());
outBuffer.writeShort(createMeterFlagsBitmask(message.getFlags()));
outBuffer.writeInt(message.getMeterId().getValue().intValue());
serializeBands(message.getBands(), outBuffer);
ByteBufUtils.updateOFHeaderLength(outBuffer);
}
private static int createMeterFlagsBitmask(final MeterFlags flags) {
return ByteBufUtils.fillBitMask(0,
flags.isOFPMFKBPS(),
flags.isOFPMFPKTPS(),
flags.isOFPMFBURST(),
flags.isOFPMFSTATS());
}
private void serializeBands(final List<Bands> bands, final ByteBuf outBuffer) {
if (bands != null) {
for (Bands currentBand : bands) {
MeterBand meterBand = currentBand.getMeterBand();
if (meterBand instanceof MeterBandDropCase) {
MeterBandDropCase dropBandCase = (MeterBandDropCase) meterBand;
MeterBandDrop dropBand = dropBandCase.getMeterBandDrop();
writeBandCommonFields(dropBand, outBuffer);
outBuffer.writeZero(PADDING_IN_METER_BAND_DROP);
} else if (meterBand instanceof MeterBandDscpRemarkCase) {
MeterBandDscpRemarkCase dscpRemarkBandCase = (MeterBandDscpRemarkCase) meterBand;
MeterBandDscpRemark dscpRemarkBand = dscpRemarkBandCase.getMeterBandDscpRemark();
writeBandCommonFields(dscpRemarkBand, outBuffer);
outBuffer.writeByte(dscpRemarkBand.getPrecLevel());
outBuffer.writeZero(PADDING_IN_METER_BAND_DSCP_REMARK);
} else if (meterBand instanceof MeterBandExperimenterCase) {
MeterBandExperimenterCase experimenterBandCase = (MeterBandExperimenterCase) meterBand;
MeterBandExperimenter experimenterBand = experimenterBandCase.getMeterBandExperimenter();
ExperimenterIdMeterBand expIdMeterBand = experimenterBand.getAugmentation(ExperimenterIdMeterBand.class);
if (expIdMeterBand != null) {
long expId = expIdMeterBand.getExperimenter().getValue();
Class<? extends ExperimenterMeterBandSubType> meterBandSubType = expIdMeterBand.getSubType();
try {
OFSerializer<MeterBandExperimenterCase> serializer = registry.getSerializer(
ExperimenterSerializerKeyFactory.createMeterBandSerializerKey(
EncodeConstants.OF13_VERSION_ID, expId, meterBandSubType));
serializer.serialize(experimenterBandCase, outBuffer);
} catch (final IllegalStateException e) {
LOG.warn("Serializer for key: {} wasn't found, exception {}", ExperimenterSerializerKeyFactory.createMeterBandSerializerKey(
EncodeConstants.OF13_VERSION_ID, expId, meterBandSubType), e);
}
}
}
}
}
}
private static void writeBandCommonFields(final MeterBandCommons meterBand, final ByteBuf outBuffer) {
outBuffer.writeShort(meterBand.getType().getIntValue());
outBuffer.writeShort(LENGTH_OF_METER_BANDS);
outBuffer.writeInt(meterBand.getRate().intValue());
outBuffer.writeInt(meterBand.getBurstSize().intValue());
}
@Override
public void injectSerializerRegistry(final SerializerRegistry serializerRegistry) {
registry = serializerRegistry;
}
}