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.flow.and.statistics.map.list.FlowAndStatisticsMapList;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.flow.and.statistics.map.list.FlowAndStatisticsMapListBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.multipart.reply.multipart.reply.body.MultipartReplyFlowStatsBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowCookie;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowModFlags;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.InstructionsBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionKey;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.Match;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.statistics.types.rev130925.duration.DurationBuilder;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.multipart.types.rev170112.multipart.reply.MultipartReplyBody;
  39
  40 public class MultipartReplyFlowStatsDeserializer implements OFDeserializer<MultipartReplyBody>,
  41         DeserializerRegistryInjector {
  42
  43     private static final MessageCodeKey MATCH_KEY = new MessageCodeMatchKey(EncodeConstants.OF13_VERSION_ID,
  44             EncodeConstants.EMPTY_VALUE, Match.class,
  45             MatchPath.FLOWS_STATISTICS_UPDATE_MATCH);
  46
  47     private static final byte PADDING_IN_FLOW_STATS_HEADER_01 = 1;
  48     private static final byte PADDING_IN_FLOW_STATS_HEADER_02 = 4;
  49     private DeserializerRegistry registry;
  50
  51     @Override
  52     public MultipartReplyBody deserialize(ByteBuf message) {
  53         final MultipartReplyFlowStatsBuilder builder = new MultipartReplyFlowStatsBuilder();
  54         final List<FlowAndStatisticsMapList> items = new ArrayList<>();
  55
  56         while (message.readableBytes() > 0) {
  57             final FlowAndStatisticsMapListBuilder itemBuilder = new FlowAndStatisticsMapListBuilder();
  58             final int itemLength = message.readUnsignedShort();
  59             final ByteBuf itemMessage = message.readSlice(itemLength - EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
  60
  61             itemBuilder.setTableId(itemMessage.readUnsignedByte());
  62             itemMessage.skipBytes(PADDING_IN_FLOW_STATS_HEADER_01);
  63
  64             itemBuilder
  65                     .setDuration(new DurationBuilder()
  66                             .setSecond(new Counter32(itemMessage.readUnsignedInt()))
  67                             .setNanosecond(new Counter32(itemMessage.readUnsignedInt()))
  68                             .build())
  69                     .setPriority(itemMessage.readUnsignedShort())
  70                     .setIdleTimeout(itemMessage.readUnsignedShort())
  71                     .setHardTimeout(itemMessage.readUnsignedShort())
  72                     .setFlags(createFlowModFlagsFromBitmap(itemMessage.readUnsignedShort()));
  73
  74             itemMessage.skipBytes(PADDING_IN_FLOW_STATS_HEADER_02);
  75
  76             final byte[] cookie = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  77             itemMessage.readBytes(cookie);
  78             final byte[] packetCount = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  79             itemMessage.readBytes(packetCount);
  80             final byte[] byteCount = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  81             itemMessage.readBytes(byteCount);
  82
  83             itemBuilder
  84                     .setCookie(new FlowCookie(new BigInteger(1, cookie)))
  85                     .setCookieMask(new FlowCookie(OFConstants.DEFAULT_COOKIE_MASK))
  86                     .setPacketCount(new Counter64(new BigInteger(1, packetCount)))
  87                     .setByteCount(new Counter64(new BigInteger(1, byteCount)));
  88
  89             final OFDeserializer<Match> matchDeserializer =
  90                     Preconditions.checkNotNull(registry).getDeserializer(MATCH_KEY);
  91             itemBuilder.setMatch(MatchUtil.transformMatch(matchDeserializer.deserialize(itemMessage),
  92                     org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Match.class));
  93
  94             final int length = itemMessage.readableBytes();
  95
  96             if (length > 0) {
  97                 final List<org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list
  98                         .Instruction> instructions = new ArrayList<>();
  99                 final int startIndex = itemMessage.readerIndex();
 100                 int offset = 0;
 101
 102                 while (itemMessage.readerIndex() - startIndex < length) {
 103                     instructions.add(new InstructionBuilder()
 104                             .withKey(new InstructionKey(offset))
 105                             .setOrder(offset)
 106                             .setInstruction(InstructionUtil
 107                                     .readInstruction(EncodeConstants.OF13_VERSION_ID, itemMessage, registry))
 108                             .build());
 109
 110                     offset++;
 111                 }
 112
 113                 itemBuilder.setInstructions(new InstructionsBuilder()
 114                         .setInstruction(instructions)
 115                         .build());
 116             }
 117
 118             items.add(itemBuilder.build());
 119         }
 120
 121         return builder
 122                 .setFlowAndStatisticsMapList(items)
 123                 .build();
 124     }
 125
 126     private static FlowModFlags createFlowModFlagsFromBitmap(int input) {
 127         final Boolean ofp_FF_SendFlowRem = (input & 1) != 0;
 128         final Boolean ofp_FF_CheckOverlap = (input & 1 << 1) != 0;
 129         final Boolean ofp_FF_ResetCounts = (input & 1 << 2) != 0;
 130         final Boolean ofp_FF_NoPktCounts = (input & 1 << 3) != 0;
 131         final Boolean ofp_FF_NoBytCounts = (input & 1 << 4) != 0;
 132         return new FlowModFlags(ofp_FF_CheckOverlap, ofp_FF_NoBytCounts, ofp_FF_NoPktCounts, ofp_FF_ResetCounts,
 133                 ofp_FF_SendFlowRem);
 134     }
 135
 136     @Override
 137     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
 138         registry = deserializerRegistry;
 139     }
 140
 141 }