Ray Milkey | d43fe45 | 2015-05-29 09:35:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.codec.impl; |
| 17 | |
| 18 | import org.onlab.packet.IpAddress; |
| 19 | import org.onlab.packet.MacAddress; |
| 20 | import org.onlab.packet.MplsLabel; |
| 21 | import org.onlab.packet.VlanId; |
| 22 | import org.onosproject.net.ChannelSpacing; |
| 23 | import org.onosproject.net.GridType; |
| 24 | import org.onosproject.net.Lambda; |
| 25 | import org.onosproject.net.OchSignal; |
| 26 | import org.onosproject.net.PortNumber; |
| 27 | import org.onosproject.net.flow.instructions.Instruction; |
| 28 | import org.onosproject.net.flow.instructions.Instructions; |
| 29 | import org.onosproject.net.flow.instructions.L0ModificationInstruction; |
| 30 | import org.onosproject.net.flow.instructions.L2ModificationInstruction; |
| 31 | import org.onosproject.net.flow.instructions.L3ModificationInstruction; |
| 32 | |
| 33 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 34 | |
| 35 | import static org.onlab.util.Tools.nullIsIllegal; |
| 36 | |
| 37 | /** |
| 38 | * Decoding portion of the instruction codec. |
| 39 | */ |
| 40 | public final class DecodeInstructionCodec { |
| 41 | private final ObjectNode json; |
| 42 | |
| 43 | /** |
| 44 | * Creates a decode instruction codec object. |
| 45 | * |
| 46 | * @param json JSON object to decode |
| 47 | */ |
| 48 | public DecodeInstructionCodec(ObjectNode json) { |
| 49 | this.json = json; |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Decodes a Layer 2 instruction. |
| 54 | * |
| 55 | * @return instruction object decoded from the JSON |
| 56 | * @throws IllegalArgumentException if the JSON is invalid |
| 57 | */ |
| 58 | private Instruction decodeL2() { |
| 59 | String subType = json.get(InstructionCodec.SUBTYPE).asText(); |
| 60 | |
| 61 | if (subType.equals(L2ModificationInstruction.L2SubType.ETH_SRC.name())) { |
| 62 | String mac = nullIsIllegal(json.get(InstructionCodec.MAC), |
| 63 | InstructionCodec.MAC + InstructionCodec.MISSING_MEMBER_MESSAGE).asText(); |
| 64 | return Instructions.modL2Src(MacAddress.valueOf(mac)); |
| 65 | } else if (subType.equals(L2ModificationInstruction.L2SubType.ETH_DST.name())) { |
| 66 | String mac = nullIsIllegal(json.get(InstructionCodec.MAC), |
| 67 | InstructionCodec.MAC + InstructionCodec.MISSING_MEMBER_MESSAGE).asText(); |
| 68 | return Instructions.modL2Dst(MacAddress.valueOf(mac)); |
| 69 | } else if (subType.equals(L2ModificationInstruction.L2SubType.VLAN_ID.name())) { |
| 70 | short vlanId = (short) nullIsIllegal(json.get(InstructionCodec.VLAN_ID), |
| 71 | InstructionCodec.VLAN_ID + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 72 | return Instructions.modVlanId(VlanId.vlanId(vlanId)); |
| 73 | } else if (subType.equals(L2ModificationInstruction.L2SubType.VLAN_PCP.name())) { |
| 74 | byte vlanPcp = (byte) nullIsIllegal(json.get(InstructionCodec.VLAN_PCP), |
| 75 | InstructionCodec.VLAN_PCP + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 76 | return Instructions.modVlanPcp(vlanPcp); |
| 77 | } else if (subType.equals(L2ModificationInstruction.L2SubType.MPLS_LABEL.name())) { |
| 78 | int label = nullIsIllegal(json.get(InstructionCodec.MPLS_LABEL), |
| 79 | InstructionCodec.MPLS_LABEL + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 80 | return Instructions.modMplsLabel(MplsLabel.mplsLabel(label)); |
| 81 | } else if (subType.equals(L2ModificationInstruction.L2SubType.MPLS_PUSH.name())) { |
| 82 | return Instructions.pushMpls(); |
| 83 | } else if (subType.equals(L2ModificationInstruction.L2SubType.MPLS_POP.name())) { |
| 84 | return Instructions.popMpls(); |
| 85 | } else if (subType.equals(L2ModificationInstruction.L2SubType.DEC_MPLS_TTL.name())) { |
| 86 | return Instructions.decMplsTtl(); |
| 87 | } else if (subType.equals(L2ModificationInstruction.L2SubType.VLAN_POP.name())) { |
| 88 | return Instructions.popVlan(); |
| 89 | } else if (subType.equals(L2ModificationInstruction.L2SubType.VLAN_PUSH.name())) { |
| 90 | return Instructions.pushVlan(); |
| 91 | } |
| 92 | throw new IllegalArgumentException("L2 Instruction subtype " |
| 93 | + subType + " is not supported"); |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Decodes a Layer 3 instruction. |
| 98 | * |
| 99 | * @return instruction object decoded from the JSON |
| 100 | * @throws IllegalArgumentException if the JSON is invalid |
| 101 | */ |
| 102 | private Instruction decodeL3() { |
| 103 | String subType = json.get(InstructionCodec.SUBTYPE).asText(); |
| 104 | |
| 105 | if (subType.equals(L3ModificationInstruction.L3SubType.IPV4_SRC.name())) { |
| 106 | IpAddress ip = IpAddress.valueOf(nullIsIllegal(json.get(InstructionCodec.IP), |
| 107 | InstructionCodec.IP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText()); |
| 108 | return Instructions.modL3Src(ip); |
| 109 | } else if (subType.equals(L3ModificationInstruction.L3SubType.IPV4_DST.name())) { |
| 110 | IpAddress ip = IpAddress.valueOf(nullIsIllegal(json.get(InstructionCodec.IP), |
| 111 | InstructionCodec.IP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText()); |
| 112 | return Instructions.modL3Dst(ip); |
| 113 | } else if (subType.equals(L3ModificationInstruction.L3SubType.IPV6_SRC.name())) { |
| 114 | IpAddress ip = IpAddress.valueOf(nullIsIllegal(json.get(InstructionCodec.IP), |
| 115 | InstructionCodec.IP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText()); |
| 116 | return Instructions.modL3IPv6Src(ip); |
| 117 | } else if (subType.equals(L3ModificationInstruction.L3SubType.IPV6_DST.name())) { |
| 118 | IpAddress ip = IpAddress.valueOf(nullIsIllegal(json.get(InstructionCodec.IP), |
| 119 | InstructionCodec.IP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText()); |
| 120 | return Instructions.modL3IPv6Dst(ip); |
| 121 | } else if (subType.equals(L3ModificationInstruction.L3SubType.IPV6_FLABEL.name())) { |
| 122 | int flowLabel = nullIsIllegal(json.get(InstructionCodec.FLOW_LABEL), |
| 123 | InstructionCodec.FLOW_LABEL + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 124 | return Instructions.modL3IPv6FlowLabel(flowLabel); |
| 125 | } |
| 126 | throw new IllegalArgumentException("L3 Instruction subtype " |
| 127 | + subType + " is not supported"); |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Decodes a Layer 0 instruction. |
| 132 | * |
| 133 | * @return instruction object decoded from the JSON |
| 134 | * @throws IllegalArgumentException if the JSON is invalid |
| 135 | */ |
| 136 | private Instruction decodeL0() { |
| 137 | String subType = json.get(InstructionCodec.SUBTYPE).asText(); |
| 138 | |
| 139 | |
| 140 | if (subType.equals(L0ModificationInstruction.L0SubType.LAMBDA.name())) { |
| 141 | int lambda = nullIsIllegal(json.get(InstructionCodec.LAMBDA), |
| 142 | InstructionCodec.LAMBDA + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 143 | return Instructions.modL0Lambda(Lambda.indexedLambda(lambda)); |
| 144 | } else if (subType.equals(L0ModificationInstruction.L0SubType.OCH.name())) { |
| 145 | String gridTypeString = nullIsIllegal(json.get(InstructionCodec.GRID_TYPE), |
| 146 | InstructionCodec.GRID_TYPE + InstructionCodec.MISSING_MEMBER_MESSAGE).asText(); |
| 147 | GridType gridType = GridType.valueOf(gridTypeString); |
| 148 | if (gridType == null) { |
| 149 | throw new IllegalArgumentException("Unknown grid type " |
| 150 | + gridTypeString); |
| 151 | } |
| 152 | String channelSpacingString = nullIsIllegal(json.get(InstructionCodec.CHANNEL_SPACING), |
| 153 | InstructionCodec.CHANNEL_SPACING + InstructionCodec.MISSING_MEMBER_MESSAGE).asText(); |
| 154 | ChannelSpacing channelSpacing = ChannelSpacing.valueOf(channelSpacingString); |
| 155 | if (channelSpacing == null) { |
| 156 | throw new IllegalArgumentException("Unknown channel spacing " |
| 157 | + channelSpacingString); |
| 158 | } |
| 159 | int spacingMultiplier = nullIsIllegal(json.get(InstructionCodec.SPACING_MULTIPLIER), |
| 160 | InstructionCodec.SPACING_MULTIPLIER + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 161 | int slotGranularity = nullIsIllegal(json.get(InstructionCodec.SLOT_GRANULARITY), |
| 162 | InstructionCodec.SLOT_GRANULARITY + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 163 | return Instructions.modL0Lambda(new OchSignal(gridType, channelSpacing, |
| 164 | spacingMultiplier, slotGranularity)); |
| 165 | } |
| 166 | throw new IllegalArgumentException("L0 Instruction subtype " |
| 167 | + subType + " is not supported"); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Decodes the JSON into an instruction object. |
| 172 | * |
| 173 | * @return Criterion object |
| 174 | * @throws IllegalArgumentException if the JSON is invalid |
| 175 | */ |
| 176 | public Instruction decode() { |
| 177 | String type = json.get(InstructionCodec.TYPE).asText(); |
| 178 | |
| 179 | if (type.equals(Instruction.Type.OUTPUT.name())) { |
| 180 | PortNumber portNumber = |
| 181 | PortNumber.portNumber(nullIsIllegal(json.get(InstructionCodec.PORT), |
| 182 | InstructionCodec.PORT + InstructionCodec.MISSING_MEMBER_MESSAGE).asLong()); |
| 183 | return Instructions.createOutput(portNumber); |
| 184 | } else if (type.equals(Instruction.Type.DROP.name())) { |
| 185 | return Instructions.createDrop(); |
| 186 | } else if (type.equals(Instruction.Type.L0MODIFICATION.name())) { |
| 187 | return decodeL0(); |
| 188 | } else if (type.equals(Instruction.Type.L2MODIFICATION.name())) { |
| 189 | return decodeL2(); |
| 190 | } else if (type.equals(Instruction.Type.L3MODIFICATION.name())) { |
| 191 | return decodeL3(); |
| 192 | } |
| 193 | throw new IllegalArgumentException("Instruction type " |
| 194 | + type + " is not supported"); |
| 195 | } |
| 196 | |
| 197 | } |