openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/protocol/deserialization/multipart/MultipartReplyFlowStatsDeserializer.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.openflowplugin.impl.protocol.deserialization.multipart;
  10
  11 import com.google.common.base.Preconditions;
  12 import io.netty.buffer.ByteBuf;
  13 import java.math.BigInteger;
  14 import java.util.ArrayList;
  15 import java.util.List;
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;
  17 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistryInjector;
  18 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  19 import org.opendaylight.openflowjava.protocol.api.keys.MessageCodeKey;
  20 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  21 import org.opendaylight.openflowplugin.api.OFConstants;
  22 import org.opendaylight.openflowplugin.extension.api.path.MatchPath;
  23 import org.opendaylight.openflowplugin.impl.protocol.deserialization.key.MessageCodeMatchKey;
  24 import org.opendaylight.openflowplugin.impl.protocol.deserialization.util.InstructionUtil;
  25 import org.opendaylight.openflowplugin.impl.util.MatchUtil;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Counter32;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Counter64;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowId;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.and.statistics.map.list.FlowAndStatisticsMapList;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.and.statistics.map.list.FlowAndStatisticsMapListBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.and.statistics.map.list.FlowAndStatisticsMapListKey;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.multipart.reply.multipart.reply.body.MultipartReplyFlowStatsBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowCookie;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowModFlags;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.InstructionsBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionBuilder;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionKey;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.Match;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.statistics.types.rev130925.duration.DurationBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.multipart.types.rev170112.multipart.reply.MultipartReplyBody;
  41
  42 public class MultipartReplyFlowStatsDeserializer implements OFDeserializer<MultipartReplyBody>,
  43         DeserializerRegistryInjector {
  44
  45     private static final MessageCodeKey MATCH_KEY = new MessageCodeMatchKey(EncodeConstants.OF13_VERSION_ID,
  46             EncodeConstants.EMPTY_VALUE, Match.class,
  47             MatchPath.FLOWS_STATISTICS_UPDATE_MATCH);
  48
  49     private static final byte PADDING_IN_FLOW_STATS_HEADER_01 = 1;
  50     private static final byte PADDING_IN_FLOW_STATS_HEADER_02 = 4;
  51     private DeserializerRegistry registry;
  52
  53     @Override
  54     public MultipartReplyBody deserialize(ByteBuf message) {
  55         final MultipartReplyFlowStatsBuilder builder = new MultipartReplyFlowStatsBuilder();
  56         final List<FlowAndStatisticsMapList> items = new ArrayList<>();
  57         int key = 0;
  58
  59         while (message.readableBytes() > 0) {
  60             final FlowAndStatisticsMapListBuilder itemBuilder = new FlowAndStatisticsMapListBuilder();
  61             final int itemLength = message.readUnsignedShort();
  62             final ByteBuf itemMessage = message.readSlice(itemLength - EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
  63
  64             itemBuilder.setTableId(itemMessage.readUnsignedByte());
  65             itemMessage.skipBytes(PADDING_IN_FLOW_STATS_HEADER_01);
  66
  67             itemBuilder
  68                     .setDuration(new DurationBuilder()
  69                             .setSecond(new Counter32(itemMessage.readUnsignedInt()))
  70                             .setNanosecond(new Counter32(itemMessage.readUnsignedInt()))
  71                             .build())
  72                     .setPriority(itemMessage.readUnsignedShort())
  73                     .setIdleTimeout(itemMessage.readUnsignedShort())
  74                     .setHardTimeout(itemMessage.readUnsignedShort())
  75                     .setFlags(createFlowModFlagsFromBitmap(itemMessage.readUnsignedShort()));
  76
  77             itemMessage.skipBytes(PADDING_IN_FLOW_STATS_HEADER_02);
  78
  79             final byte[] cookie = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  80             itemMessage.readBytes(cookie);
  81             final byte[] packetCount = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  82             itemMessage.readBytes(packetCount);
  83             final byte[] byteCount = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  84             itemMessage.readBytes(byteCount);
  85
  86             itemBuilder
  87                     .setCookie(new FlowCookie(new BigInteger(1, cookie)))
  88                     .setCookieMask(new FlowCookie(OFConstants.DEFAULT_COOKIE_MASK))
  89                     .setPacketCount(new Counter64(new BigInteger(1, packetCount)))
  90                     .setByteCount(new Counter64(new BigInteger(1, byteCount)));
  91
  92             final OFDeserializer<Match> matchDeserializer =
  93                     Preconditions.checkNotNull(registry).getDeserializer(MATCH_KEY);
  94             itemBuilder.setMatch(MatchUtil.transformMatch(matchDeserializer.deserialize(itemMessage),
  95                     org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Match.class));
  96
  97             final int length = itemMessage.readableBytes();
  98
  99             if (length > 0) {
 100                 final List<org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list
 101                         .Instruction> instructions = new ArrayList<>();
 102                 final int startIndex = itemMessage.readerIndex();
 103                 int offset = 0;
 104
 105                 while (itemMessage.readerIndex() - startIndex < length) {
 106                     instructions.add(new InstructionBuilder()
 107                             .withKey(new InstructionKey(offset))
 108                             .setOrder(offset)
 109                             .setInstruction(InstructionUtil
 110                                     .readInstruction(EncodeConstants.OF13_VERSION_ID, itemMessage, registry))
 111                             .build());
 112
 113                     offset++;
 114                 }
 115
 116                 itemBuilder.setInstructions(new InstructionsBuilder()
 117                         .setInstruction(instructions)
 118                         .build());
 119             }
 120
 121             itemBuilder.withKey(new FlowAndStatisticsMapListKey(new FlowId(String.valueOf(key++))));
 122             items.add(itemBuilder.build());
 123         }
 124
 125         return builder
 126                 .setFlowAndStatisticsMapList(items)
 127                 .build();
 128     }
 129
 130     private static FlowModFlags createFlowModFlagsFromBitmap(int input) {
 131         final Boolean ofp_FF_SendFlowRem = (input & 1) != 0;
 132         final Boolean ofp_FF_CheckOverlap = (input & 1 << 1) != 0;
 133         final Boolean ofp_FF_ResetCounts = (input & 1 << 2) != 0;
 134         final Boolean ofp_FF_NoPktCounts = (input & 1 << 3) != 0;
 135         final Boolean ofp_FF_NoBytCounts = (input & 1 << 4) != 0;
 136         return new FlowModFlags(ofp_FF_CheckOverlap, ofp_FF_NoBytCounts, ofp_FF_NoPktCounts, ofp_FF_ResetCounts,
 137                 ofp_FF_SendFlowRem);
 138     }
 139
 140     @Override
 141     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
 142         registry = deserializerRegistry;
 143     }
 144
 145 }