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.MulticastMappingInstruction; |
| 22 | import org.onosproject.mapping.instructions.UnicastMappingInstruction; |
| 23 | import org.slf4j.Logger; |
| 24 | |
| 25 | import static org.slf4j.LoggerFactory.getLogger; |
| 26 | |
| 27 | /** |
| 28 | * JSON encoding of MappingInstructions. |
| 29 | */ |
| 30 | public final class EncodeMappingInstructionCodecHelper { |
Ray Milkey | 9c9cde4 | 2018-01-12 14:22:06 -0800 | [diff] [blame] | 31 | private static final Logger log = getLogger(EncodeMappingInstructionCodecHelper.class); |
Jian Li | b54d14b | 2017-03-28 21:34:34 +0900 | [diff] [blame] | 32 | private final MappingInstruction instruction; |
| 33 | private final CodecContext context; |
| 34 | |
| 35 | /** |
| 36 | * Creates a mapping instruction object encoder. |
| 37 | * |
| 38 | * @param instruction mapping instruction to encode |
| 39 | * @param context codec context for the encoding |
| 40 | */ |
| 41 | public EncodeMappingInstructionCodecHelper(MappingInstruction instruction, |
| 42 | CodecContext context) { |
| 43 | this.instruction = instruction; |
| 44 | this.context = context; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Encodes an unicast mapping instruction. |
| 49 | * |
| 50 | * @param result json node that the mapping instruction |
| 51 | * attributes are added to |
| 52 | */ |
| 53 | private void encodeUnicast(ObjectNode result) { |
| 54 | UnicastMappingInstruction unicastInstruction = |
| 55 | (UnicastMappingInstruction) instruction; |
| 56 | result.put(MappingInstructionCodec.SUBTYPE, unicastInstruction.subtype().name()); |
| 57 | |
| 58 | switch (unicastInstruction.subtype()) { |
| 59 | case WEIGHT: |
| 60 | UnicastMappingInstruction.WeightMappingInstruction wmi = |
| 61 | (UnicastMappingInstruction.WeightMappingInstruction) |
| 62 | unicastInstruction; |
| 63 | result.put(MappingInstructionCodec.UNICAST_WEIGHT, wmi.weight()); |
| 64 | break; |
| 65 | case PRIORITY: |
| 66 | UnicastMappingInstruction.PriorityMappingInstruction pmi = |
| 67 | (UnicastMappingInstruction.PriorityMappingInstruction) |
| 68 | unicastInstruction; |
| 69 | result.put(MappingInstructionCodec.UNICAST_PRIORITY, pmi.priority()); |
| 70 | break; |
| 71 | default: |
| 72 | log.info("Cannot convert unicast subtype of {}", |
| 73 | unicastInstruction.subtype()); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Encodes a multicast mapping instruction. |
| 79 | * |
| 80 | * @param result json node that the mapping instruction |
| 81 | * attributes are added to |
| 82 | */ |
| 83 | private void encodeMulticast(ObjectNode result) { |
| 84 | MulticastMappingInstruction multicastMappingInstruction = |
| 85 | (MulticastMappingInstruction) instruction; |
| 86 | result.put(MappingInstructionCodec.SUBTYPE, multicastMappingInstruction.subtype().name()); |
| 87 | |
| 88 | switch (multicastMappingInstruction.subtype()) { |
| 89 | case WEIGHT: |
| 90 | MulticastMappingInstruction.WeightMappingInstruction wmi = |
| 91 | (MulticastMappingInstruction.WeightMappingInstruction) |
| 92 | multicastMappingInstruction; |
| 93 | result.put(MappingInstructionCodec.MULTICAST_WEIGHT, wmi.weight()); |
| 94 | break; |
| 95 | case PRIORITY: |
| 96 | MulticastMappingInstruction.PriorityMappingInstruction pmi = |
| 97 | (MulticastMappingInstruction.PriorityMappingInstruction) |
| 98 | multicastMappingInstruction; |
| 99 | result.put(MappingInstructionCodec.MULTICAST_PRIORITY, pmi.priority()); |
| 100 | break; |
| 101 | default: |
| 102 | log.info("Cannot convert multicast subtype of {}", |
| 103 | multicastMappingInstruction.subtype()); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Encodes the given mapping instruction into JSON. |
| 109 | * |
| 110 | * @return JSON object node representing the mapping instruction. |
| 111 | */ |
| 112 | public ObjectNode encode() { |
| 113 | final ObjectNode result = context.mapper().createObjectNode() |
| 114 | .put(MappingInstructionCodec.TYPE, instruction.type().toString()); |
| 115 | |
| 116 | switch (instruction.type()) { |
| 117 | case UNICAST: |
| 118 | encodeUnicast(result); |
| 119 | break; |
| 120 | case MULTICAST: |
| 121 | encodeMulticast(result); |
| 122 | break; |
| 123 | default: |
| 124 | log.info("Cannot convert mapping instruction type of {}", instruction.type()); |
| 125 | break; |
| 126 | } |
| 127 | return result; |
| 128 | } |
| 129 | } |