Jian Li | b54d14b | 2017-03-28 21:34:34 +0900 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2017-present Open Networking Foundation |
Jian Li | b54d14b | 2017-03-28 21:34:34 +0900 | [diff] [blame] | 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 | */ |
Jian Li | 2e818b0 | 2017-04-12 19:28:30 +0900 | [diff] [blame] | 16 | package org.onosproject.mapping.codec; |
Jian Li | b54d14b | 2017-03-28 21:34:34 +0900 | [diff] [blame] | 17 | |
| 18 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 19 | import org.onosproject.codec.CodecContext; |
| 20 | import org.onosproject.mapping.instructions.MappingInstruction; |
| 21 | import org.onosproject.mapping.instructions.MappingInstructions; |
| 22 | import org.onosproject.mapping.instructions.MulticastMappingInstruction; |
| 23 | import org.onosproject.mapping.instructions.UnicastMappingInstruction; |
| 24 | |
| 25 | import static org.onlab.util.Tools.nullIsIllegal; |
| 26 | |
| 27 | /** |
| 28 | * Decoding portion of the mapping instruction codec. |
| 29 | */ |
| 30 | public final class DecodeMappingInstructionCodecHelper { |
| 31 | private final ObjectNode json; |
| 32 | private final CodecContext context; |
| 33 | |
| 34 | /** |
| 35 | * Creates a decode mapping instruction codec object. |
| 36 | * |
| 37 | * @param json JSON object to decode |
| 38 | * @param context codec context |
| 39 | */ |
| 40 | public DecodeMappingInstructionCodecHelper(ObjectNode json, CodecContext context) { |
| 41 | this.json = json; |
| 42 | this.context = context; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Decodes an unicast mapping instruction. |
| 47 | * |
| 48 | * @return mapping instruction object decoded from the JSON |
| 49 | * @throws IllegalArgumentException if the JSON is invalid |
| 50 | */ |
| 51 | private MappingInstruction decodeUnicast() { |
| 52 | String subType = nullIsIllegal(json.get(MappingInstructionCodec.SUBTYPE), |
| 53 | MappingInstructionCodec.SUBTYPE + MappingInstructionCodec.ERROR_MESSAGE).asText(); |
| 54 | |
| 55 | if (subType.equals(UnicastMappingInstruction.UnicastType.WEIGHT.name())) { |
| 56 | int weight = nullIsIllegal(json.get(MappingInstructionCodec.UNICAST_WEIGHT), |
| 57 | MappingInstructionCodec.UNICAST_WEIGHT + |
| 58 | MappingInstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 59 | return MappingInstructions.unicastWeight(weight); |
| 60 | } else if (subType.equals(UnicastMappingInstruction.UnicastType.PRIORITY.name())) { |
| 61 | int priority = nullIsIllegal(json.get(MappingInstructionCodec.UNICAST_PRIORITY), |
| 62 | MappingInstructionCodec.UNICAST_PRIORITY + |
| 63 | MappingInstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 64 | return MappingInstructions.unicastPriority(priority); |
| 65 | } |
| 66 | throw new IllegalArgumentException("Unicast MappingInstruction subtype " |
| 67 | + subType + " is not supported"); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Decodes a multicast mapping instruction. |
| 72 | * |
| 73 | * @return mapping instruction object decoded from the JSON |
| 74 | * @throws IllegalArgumentException if the JSON is invalid |
| 75 | */ |
| 76 | private MappingInstruction decodeMulticast() { |
| 77 | String subType = nullIsIllegal(json.get(MappingInstructionCodec.SUBTYPE), |
| 78 | MappingInstructionCodec.SUBTYPE + MappingInstructionCodec.ERROR_MESSAGE).asText(); |
| 79 | |
| 80 | if (subType.equals(MulticastMappingInstruction.MulticastType.WEIGHT.name())) { |
| 81 | int weight = nullIsIllegal(json.get(MappingInstructionCodec.MULTICAST_WEIGHT), |
| 82 | MappingInstructionCodec.MULTICAST_WEIGHT + |
| 83 | MappingInstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 84 | return MappingInstructions.multicastWeight(weight); |
| 85 | } else if (subType.equals(MulticastMappingInstruction.MulticastType.PRIORITY.name())) { |
| 86 | int priority = nullIsIllegal(json.get(MappingInstructionCodec.MULTICAST_PRIORITY), |
| 87 | MappingInstructionCodec.MULTICAST_PRIORITY + |
| 88 | MappingInstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| 89 | return MappingInstructions.multicastPriority(priority); |
| 90 | } |
| 91 | throw new IllegalArgumentException("Multicast MappingInstruction subtype " |
| 92 | + subType + " is not supported"); |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Decodes the JSON into a mapping instruction object. |
| 97 | * |
| 98 | * @return MappingInstruction object |
| 99 | * @throws IllegalArgumentException if the JSON is invalid |
| 100 | */ |
| 101 | public MappingInstruction decode() { |
| 102 | String type = nullIsIllegal(json.get(MappingInstructionCodec.TYPE), |
| 103 | MappingInstructionCodec.TYPE + MappingInstructionCodec.ERROR_MESSAGE).asText(); |
| 104 | |
| 105 | if (type.equals(MappingInstruction.Type.UNICAST.name())) { |
| 106 | return decodeUnicast(); |
| 107 | } else if (type.equals(MappingInstruction.Type.MULTICAST.name())) { |
| 108 | return decodeMulticast(); |
| 109 | } |
| 110 | throw new IllegalArgumentException("MappingInstruction type " |
| 111 | + type + " is not supported"); |
| 112 | } |
| 113 | } |