1 /* Copyright (C)2013 Pantheon Technologies, s.r.o. All rights reserved. */
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2 package org.opendaylight.openflowjava.protocol.impl.util;
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4 import io.netty.buffer.ByteBuf;
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6 import java.util.List;
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8 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.EthertypeAction;
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9 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.ExperimenterAction;
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10 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.GroupIdAction;
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11 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MaxLengthAction;
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12 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.MplsTtlAction;
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13 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.NwTtlAction;
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14 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.OxmFieldsAction;
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15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.PortAction;
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16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.QueueIdAction;
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17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.CopyTtlIn;
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18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.CopyTtlOut;
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19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.DecMplsTtl;
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20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.DecNwTtl;
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21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.Experimenter;
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22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.Group;
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23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.Output;
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24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.PopMpls;
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25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.PopPbb;
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26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.PopVlan;
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27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.PushMpls;
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28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.PushPbb;
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29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.PushVlan;
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30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.SetField;
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31 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.SetMplsTtl;
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32 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.SetNwTtl;
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33 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.SetQueue;
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34 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.ActionsList;
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35 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.actions.list.Action;
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36 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.MatchEntries;
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39 * Serializes ofp_actions (OpenFlow v1.3)
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40 * @author michal.polkorab
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41 * @author timotej.kubas
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43 public abstract class ActionsSerializer {
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46 * Encodes actions to ByteBuf
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47 * @param actionsList list of actions to be encoded
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48 * @param outBuffer output ByteBuf
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50 public static void encodeActions(List<ActionsList> actionsList, ByteBuf outBuffer) {
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51 if (actionsList == null) {
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54 for (ActionsList list : actionsList) {
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55 Action action = list.getAction();
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56 if (action.getType().equals(Output.class)) {
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57 encodeOutputAction(action, outBuffer);
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58 } else if (action.getType().equals(CopyTtlOut.class)) {
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59 encodeCopyTtlOutAction(outBuffer);
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60 } else if (action.getType().equals(CopyTtlIn.class)) {
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61 encodeCopyTtlInAction(outBuffer);
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62 } else if (action.getType().equals(SetMplsTtl.class)) {
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63 encodeSetMplsTtltAction(action, outBuffer);
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64 } else if (action.getType().equals(DecMplsTtl.class)) {
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65 encodeDecMplsTtlAction(outBuffer);
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66 } else if (action.getType().equals(PushVlan.class)) {
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67 encodePushVlanAction(action, outBuffer);
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68 } else if (action.getType().equals(PopVlan.class)) {
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69 encodePopVlanAction(outBuffer);
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70 } else if (action.getType().equals(PushMpls.class)) {
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71 encodePushMplsAction(action, outBuffer);
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72 } else if (action.getType().equals(PopMpls.class)) {
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73 encodePopMplsAction(action, outBuffer);
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74 } else if (action.getType().equals(SetQueue.class)) {
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75 encodeSetQueueAction(action, outBuffer);
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76 } else if (action.getType().equals(Group.class)) {
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77 encodeGroupAction(action, outBuffer);
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78 } else if (action.getType().equals(SetNwTtl.class)) {
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79 encodeSetNwTtlAction(action, outBuffer);
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80 } else if (action.getType().equals(DecNwTtl.class)) {
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81 encodeDecNwTtlAction(outBuffer);
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82 } else if (action.getType().equals(SetField.class)) {
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83 encodeSetFieldAction(action, outBuffer);
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84 } else if (action.getType().equals(PushPbb.class)) {
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85 encodePushPbbAction(action, outBuffer);
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86 } else if (action.getType().equals(PopPbb.class)) {
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87 encodePopPbbAction(outBuffer);
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88 } else if (action.getType().equals(Experimenter.class)) {
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89 encodeExperimenterAction(action, outBuffer);
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94 private static void encodeOutputAction(Action action, ByteBuf outBuffer) {
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95 final byte OUTPUT_CODE = 0;
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96 final byte OUTPUT_LENGTH = 16;
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97 final byte OUTPUT_PADDING = 6;
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98 outBuffer.writeShort(OUTPUT_CODE);
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99 outBuffer.writeShort(OUTPUT_LENGTH);
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100 PortAction port = action.getAugmentation(PortAction.class);
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101 outBuffer.writeInt(port.getPort().getValue().intValue());
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102 MaxLengthAction maxlength = action.getAugmentation(MaxLengthAction.class);
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103 outBuffer.writeShort(maxlength.getMaxLength());
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104 ByteBufUtils.padBuffer(OUTPUT_PADDING, outBuffer);
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107 private static void encodeCopyTtlOutAction(ByteBuf outBuffer) {
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108 final byte COPY_TTL_OUT_CODE = 11;
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109 outBuffer.writeShort(COPY_TTL_OUT_CODE);
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110 encodeRestOfActionHeader(outBuffer);
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113 private static void encodeCopyTtlInAction(ByteBuf outBuffer) {
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114 final byte COPY_TTL_IN_CODE = 12;
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115 outBuffer.writeShort(COPY_TTL_IN_CODE);
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116 encodeRestOfActionHeader(outBuffer);
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119 private static void encodeSetMplsTtltAction(Action action, ByteBuf outBuffer) {
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120 final byte SET_MPLS_TTL_CODE = 15;
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121 final byte SET_MPLS_TTL_LENGTH = 8;
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122 final byte SET_MPLS_TTL_PADDING = 3;
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123 outBuffer.writeShort(SET_MPLS_TTL_CODE);
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124 outBuffer.writeShort(SET_MPLS_TTL_LENGTH);
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125 MplsTtlAction mplsTtl = action.getAugmentation(MplsTtlAction.class);
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126 outBuffer.writeByte(mplsTtl.getMplsTtl());
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127 ByteBufUtils.padBuffer(SET_MPLS_TTL_PADDING, outBuffer);
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130 private static void encodeDecMplsTtlAction(ByteBuf outBuffer) {
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131 final byte DEC_MPLS_TTL_CODE = 16;
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132 outBuffer.writeShort(DEC_MPLS_TTL_CODE);
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133 encodeRestOfActionHeader(outBuffer);
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136 private static void encodePushVlanAction(Action action, ByteBuf outBuffer) {
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137 final byte PUSH_VLAN_CODE = 17;
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138 outBuffer.writeShort(PUSH_VLAN_CODE);
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139 encodeCommonEthertype(action, outBuffer);
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142 private static void encodePopVlanAction(ByteBuf outBuffer) {
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143 final byte POP_VLAN_CODE = 18;
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144 outBuffer.writeShort(POP_VLAN_CODE);
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145 encodeRestOfActionHeader(outBuffer);
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148 private static void encodePushMplsAction(Action action, ByteBuf outBuffer) {
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149 final byte PUSH_MPLS_CODE = 19;
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150 outBuffer.writeShort(PUSH_MPLS_CODE);
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151 encodeCommonEthertype(action, outBuffer);
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154 private static void encodePopMplsAction(Action action, ByteBuf outBuffer) {
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155 final byte POP_MPLS_CODE = 20;
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156 outBuffer.writeShort(POP_MPLS_CODE);
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157 encodeCommonEthertype(action, outBuffer);
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160 private static void encodeSetQueueAction(Action action, ByteBuf outBuffer) {
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161 final byte SET_QUEUE_CODE = 21;
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162 final byte SET_QUEUE_LENGTH = 8;
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163 outBuffer.writeShort(SET_QUEUE_CODE);
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164 outBuffer.writeShort(SET_QUEUE_LENGTH);
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165 QueueIdAction queueId = action.getAugmentation(QueueIdAction.class);
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166 outBuffer.writeInt(queueId.getQueueId().intValue());
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169 private static void encodeGroupAction(Action action, ByteBuf outBuffer) {
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170 final byte GROUP_CODE = 22;
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171 final byte GROUP_LENGTH = 8;
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172 outBuffer.writeShort(GROUP_CODE);
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173 outBuffer.writeShort(GROUP_LENGTH);
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174 GroupIdAction groupId = action.getAugmentation(GroupIdAction.class);
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175 outBuffer.writeInt(groupId.getGroupId().intValue());
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178 private static void encodeSetNwTtlAction(Action action, ByteBuf outBuffer) {
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179 final byte SET_NW_TTL_CODE = 23;
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180 final byte SET_NW_TTL_LENGTH = 8;
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181 final byte SET_NW_TTL_PADDING = 3;
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182 outBuffer.writeShort(SET_NW_TTL_CODE);
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183 outBuffer.writeShort(SET_NW_TTL_LENGTH);
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184 NwTtlAction nwTtl = action.getAugmentation(NwTtlAction.class);
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185 outBuffer.writeByte(nwTtl.getNwTtl());
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186 ByteBufUtils.padBuffer(SET_NW_TTL_PADDING, outBuffer);
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189 private static void encodeDecNwTtlAction(ByteBuf outBuffer) {
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190 final byte DEC_NW_TTL_CODE = 24;
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191 outBuffer.writeShort(DEC_NW_TTL_CODE);
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192 encodeRestOfActionHeader(outBuffer);
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195 private static void encodeSetFieldAction(Action action, ByteBuf outBuffer) {
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196 final int SET_FIELD_CODE = 25;
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197 final byte SET_FIELD_HEADER_LENGTH = 4; // only type and length
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198 OxmFieldsAction oxmField = action.getAugmentation(OxmFieldsAction.class);
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199 int length = MatchSerializer.computeMatchEntriesLength(oxmField.getMatchEntries()) + SET_FIELD_HEADER_LENGTH;
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200 outBuffer.writeShort(SET_FIELD_CODE);
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201 int paddingRemainder = length % EncodeConstants.PADDING;
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202 if (paddingRemainder != 0) {
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203 length += EncodeConstants.PADDING - paddingRemainder;
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205 outBuffer.writeShort(length);
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206 MatchSerializer.encodeMatchEntries(oxmField.getMatchEntries(), outBuffer);
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207 ByteBufUtils.padBuffer(EncodeConstants.PADDING - paddingRemainder, outBuffer);
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210 private static void encodePushPbbAction(Action action, ByteBuf outBuffer) {
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211 final byte PUSH_PBB_CODE = 26;
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212 outBuffer.writeShort(PUSH_PBB_CODE);
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213 encodeCommonEthertype(action, outBuffer);
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216 private static void encodePopPbbAction(ByteBuf outBuffer) {
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217 final byte POP_PBB_CODE = 27;
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218 outBuffer.writeShort(POP_PBB_CODE);
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219 encodeRestOfActionHeader(outBuffer);
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222 private static void encodeExperimenterAction(Action action, ByteBuf outBuffer) {
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223 final int EXPERIMENTER_CODE = 65535; // 0xFFFF
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224 final byte EXPERIMENTER_LENGTH = 8;
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225 outBuffer.writeShort(EXPERIMENTER_CODE);
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226 outBuffer.writeShort(EXPERIMENTER_LENGTH);
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227 ExperimenterAction experimenter = action.getAugmentation(ExperimenterAction.class);
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228 outBuffer.writeInt(experimenter.getExperimenter().intValue());
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231 private static void encodeRestOfActionHeader(ByteBuf outBuffer) {
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232 final byte ACTION_HEADER_LENGTH = 8;
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233 final byte PADDING_IN_ACTION_HEADER = 4;
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234 outBuffer.writeShort(ACTION_HEADER_LENGTH);
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235 ByteBufUtils.padBuffer(PADDING_IN_ACTION_HEADER, outBuffer);
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238 private static void encodeCommonEthertype(Action action, ByteBuf outBuffer) {
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239 final byte LENGTH_OF_ETHERTYPE_ACTION = 8;
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240 final byte ETHERTYPE_ACTION_PADDING = 2;
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241 outBuffer.writeShort(LENGTH_OF_ETHERTYPE_ACTION);
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242 EthertypeAction ethertype = action.getAugmentation(EthertypeAction.class);
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243 outBuffer.writeShort(ethertype.getEthertype().getValue());
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244 ByteBufUtils.padBuffer(ETHERTYPE_ACTION_PADDING, outBuffer);
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248 * Computes length of actions
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249 * @param actionsList list of actions
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250 * @return actions length
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252 public static int computeLengthOfActions(List<ActionsList> actionsList) {
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253 final byte OUTPUT_LENGTH = 16;
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254 final byte LENGTH_OF_OTHER_ACTIONS = 8;
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255 final byte ACTION_HEADER_LENGTH = 4;
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256 int lengthOfActions = 0;
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257 if (actionsList != null) {
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258 for (ActionsList list : actionsList) {
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259 Action action = list.getAction();
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260 if (action.getType().equals(Output.class)) {
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261 lengthOfActions += OUTPUT_LENGTH;
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262 } else if (action.getType().equals(SetField.class)){
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263 List<MatchEntries> entries = action.getAugmentation(OxmFieldsAction.class).getMatchEntries();
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264 int actionLength = ACTION_HEADER_LENGTH + MatchSerializer.computeMatchEntriesLength(entries);
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265 lengthOfActions += actionLength;
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266 int paddingRemainder = actionLength % EncodeConstants.PADDING;
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267 if ((paddingRemainder) != 0) {
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268 lengthOfActions += EncodeConstants.PADDING - paddingRemainder;
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271 lengthOfActions += LENGTH_OF_OTHER_ACTIONS;
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275 return lengthOfActions;
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