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.onosproject.codec.CodecContext; |
| 19 | import org.onosproject.net.OchSignal; |
| 20 | import org.onosproject.net.flow.instructions.Instruction; |
| 21 | import org.onosproject.net.flow.instructions.Instructions; |
| 22 | import org.onosproject.net.flow.instructions.L0ModificationInstruction; |
| 23 | import org.onosproject.net.flow.instructions.L2ModificationInstruction; |
| 24 | import org.onosproject.net.flow.instructions.L3ModificationInstruction; |
| 25 | import org.slf4j.Logger; |
| 26 | import org.slf4j.LoggerFactory; |
| 27 | |
| 28 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 29 | |
| 30 | /** |
| 31 | * JSON encoding of Instructions. |
| 32 | */ |
| 33 | public final class EncodeInstructionCodec { |
| 34 | protected static final Logger log = LoggerFactory.getLogger(EncodeInstructionCodec.class); |
| 35 | private final Instruction instruction; |
| 36 | private final CodecContext context; |
| 37 | |
| 38 | /** |
| 39 | * Creates an instruction object encoder. |
| 40 | * |
| 41 | * @param instruction instruction to encode |
| 42 | * @param context codec context for the encoding |
| 43 | */ |
| 44 | public EncodeInstructionCodec(Instruction instruction, CodecContext context) { |
| 45 | this.instruction = instruction; |
| 46 | this.context = context; |
| 47 | } |
| 48 | |
| 49 | |
| 50 | /** |
| 51 | * Encode an L0 modification instruction. |
| 52 | * |
| 53 | * @param result json node that the instruction attributes are added to |
| 54 | */ |
| 55 | private void encodeL0(ObjectNode result) { |
| 56 | L0ModificationInstruction instruction = |
| 57 | (L0ModificationInstruction) this.instruction; |
| 58 | result.put(InstructionCodec.SUBTYPE, instruction.subtype().name()); |
| 59 | |
| 60 | switch (instruction.subtype()) { |
| 61 | case LAMBDA: |
| 62 | final L0ModificationInstruction.ModLambdaInstruction modLambdaInstruction = |
| 63 | (L0ModificationInstruction.ModLambdaInstruction) instruction; |
| 64 | result.put(InstructionCodec.LAMBDA, modLambdaInstruction.lambda()); |
| 65 | break; |
| 66 | |
| 67 | case OCH: |
| 68 | L0ModificationInstruction.ModOchSignalInstruction ochSignalInstruction = |
| 69 | (L0ModificationInstruction.ModOchSignalInstruction) instruction; |
| 70 | OchSignal ochSignal = ochSignalInstruction.lambda(); |
| 71 | result.put(InstructionCodec.GRID_TYPE, ochSignal.gridType().name()); |
| 72 | result.put(InstructionCodec.CHANNEL_SPACING, ochSignal.channelSpacing().name()); |
| 73 | result.put(InstructionCodec.SPACING_MULTIPLIER, ochSignal.spacingMultiplier()); |
| 74 | result.put(InstructionCodec.SLOT_GRANULARITY, ochSignal.slotGranularity()); |
| 75 | break; |
| 76 | |
| 77 | default: |
| 78 | log.info("Cannot convert L0 subtype of {}", instruction.subtype()); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Encode an L2 modification instruction. |
| 84 | * |
| 85 | * @param result json node that the instruction attributes are added to |
| 86 | */ |
| 87 | private void encodeL2(ObjectNode result) { |
| 88 | L2ModificationInstruction instruction = |
| 89 | (L2ModificationInstruction) this.instruction; |
| 90 | result.put(InstructionCodec.SUBTYPE, instruction.subtype().name()); |
| 91 | |
| 92 | switch (instruction.subtype()) { |
| 93 | case ETH_SRC: |
| 94 | case ETH_DST: |
| 95 | final L2ModificationInstruction.ModEtherInstruction modEtherInstruction = |
| 96 | (L2ModificationInstruction.ModEtherInstruction) instruction; |
| 97 | result.put(InstructionCodec.MAC, modEtherInstruction.mac().toString()); |
| 98 | break; |
| 99 | |
| 100 | case VLAN_ID: |
| 101 | final L2ModificationInstruction.ModVlanIdInstruction modVlanIdInstruction = |
| 102 | (L2ModificationInstruction.ModVlanIdInstruction) instruction; |
| 103 | result.put(InstructionCodec.VLAN_ID, modVlanIdInstruction.vlanId().toShort()); |
| 104 | break; |
| 105 | |
| 106 | case VLAN_PCP: |
| 107 | final L2ModificationInstruction.ModVlanPcpInstruction modVlanPcpInstruction = |
| 108 | (L2ModificationInstruction.ModVlanPcpInstruction) instruction; |
| 109 | result.put(InstructionCodec.VLAN_PCP, modVlanPcpInstruction.vlanPcp()); |
| 110 | break; |
| 111 | |
| 112 | case MPLS_LABEL: |
| 113 | final L2ModificationInstruction.ModMplsLabelInstruction modMplsLabelInstruction = |
| 114 | (L2ModificationInstruction.ModMplsLabelInstruction) instruction; |
| 115 | result.put(InstructionCodec.MPLS_LABEL, modMplsLabelInstruction.label()); |
| 116 | break; |
| 117 | |
| 118 | case MPLS_PUSH: |
| 119 | final L2ModificationInstruction.PushHeaderInstructions pushHeaderInstructions = |
| 120 | (L2ModificationInstruction.PushHeaderInstructions) instruction; |
| 121 | |
| 122 | result.put(InstructionCodec.ETHERNET_TYPE, pushHeaderInstructions.ethernetType()); |
| 123 | break; |
| 124 | |
| 125 | default: |
| 126 | log.info("Cannot convert L2 subtype of {}", instruction.subtype()); |
| 127 | break; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Encode an L3 modification instruction. |
| 133 | * |
| 134 | * @param result json node that the instruction attributes are added to |
| 135 | */ |
| 136 | private void encodeL3(ObjectNode result) { |
| 137 | L3ModificationInstruction instruction = |
| 138 | (L3ModificationInstruction) this.instruction; |
| 139 | result.put(InstructionCodec.SUBTYPE, instruction.subtype().name()); |
| 140 | switch (instruction.subtype()) { |
| 141 | case IPV4_SRC: |
| 142 | case IPV4_DST: |
| 143 | case IPV6_SRC: |
| 144 | case IPV6_DST: |
| 145 | final L3ModificationInstruction.ModIPInstruction modIPInstruction = |
| 146 | (L3ModificationInstruction.ModIPInstruction) instruction; |
| 147 | result.put(InstructionCodec.IP, modIPInstruction.ip().toString()); |
| 148 | break; |
| 149 | |
| 150 | case IPV6_FLABEL: |
| 151 | final L3ModificationInstruction.ModIPv6FlowLabelInstruction |
| 152 | modFlowLabelInstruction = |
| 153 | (L3ModificationInstruction.ModIPv6FlowLabelInstruction) instruction; |
| 154 | result.put(InstructionCodec.FLOW_LABEL, modFlowLabelInstruction.flowLabel()); |
| 155 | break; |
| 156 | |
| 157 | default: |
| 158 | log.info("Cannot convert L3 subtype of {}", instruction.subtype()); |
| 159 | break; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * Encodes the given instruction into JSON. |
| 165 | * |
| 166 | * @return JSON object node representing the instruction |
| 167 | */ |
| 168 | public ObjectNode encode() { |
| 169 | final ObjectNode result = context.mapper().createObjectNode() |
| 170 | .put(InstructionCodec.TYPE, instruction.type().toString()); |
| 171 | |
| 172 | switch (instruction.type()) { |
| 173 | case OUTPUT: |
| 174 | final Instructions.OutputInstruction outputInstruction = |
| 175 | (Instructions.OutputInstruction) instruction; |
| 176 | result.put(InstructionCodec.PORT, outputInstruction.port().toLong()); |
| 177 | break; |
| 178 | |
| 179 | case DROP: |
| 180 | break; |
| 181 | |
| 182 | case L0MODIFICATION: |
| 183 | encodeL0(result); |
| 184 | break; |
| 185 | |
| 186 | case L2MODIFICATION: |
| 187 | encodeL2(result); |
| 188 | break; |
| 189 | |
| 190 | case L3MODIFICATION: |
| 191 | encodeL3(result); |
| 192 | break; |
| 193 | |
| 194 | default: |
| 195 | log.info("Cannot convert instruction type of {}", instruction.type()); |
| 196 | break; |
| 197 | } |
| 198 | return result; |
| 199 | } |
| 200 | |
| 201 | } |