Jian Li | ee65a23 | 2017-03-29 14:15:30 +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 | ee65a23 | 2017-03-29 14:15:30 +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 | ee65a23 | 2017-03-29 14:15:30 +0900 | [diff] [blame] | 17 | |
| 18 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 19 | import org.onosproject.mapping.actions.MappingAction; |
| 20 | import org.onosproject.mapping.actions.MappingActions; |
| 21 | |
| 22 | import static org.onlab.util.Tools.nullIsIllegal; |
| 23 | |
| 24 | /** |
| 25 | * Decode portion of the mapping action codec. |
| 26 | */ |
| 27 | public final class DecodeMappingActionCodecHelper { |
| 28 | private final ObjectNode json; |
| 29 | |
| 30 | /** |
| 31 | * Creates a decode mapping action codec object. |
| 32 | * |
| 33 | * @param json JSON object to decode |
| 34 | */ |
| 35 | public DecodeMappingActionCodecHelper(ObjectNode json) { |
| 36 | this.json = json; |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * Decodes a no mapping action. |
| 41 | * |
| 42 | * @return mapping action object decoded from the JSON |
| 43 | */ |
| 44 | private MappingAction decodeNoAction() { |
| 45 | return MappingActions.noAction(); |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Decodes a forward mapping action. |
| 50 | * |
| 51 | * @return mapping action object decoded from the JSON |
| 52 | */ |
| 53 | private MappingAction decodeForwardAction() { |
| 54 | return MappingActions.forward(); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Decodes a native forward mapping action. |
| 59 | * |
| 60 | * @return mapping action object decoded from the JSON |
| 61 | */ |
| 62 | private MappingAction decodeNativeForwardAction() { |
| 63 | return MappingActions.nativeForward(); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Decodes a drop mapping action. |
| 68 | * |
| 69 | * @return mapping action object decoded from the JSON |
| 70 | */ |
| 71 | private MappingAction decodeDropAction() { |
| 72 | return MappingActions.drop(); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Decodes the JSON into a mapping action object. |
| 77 | * |
| 78 | * @return MappingAction object |
| 79 | * @throws IllegalArgumentException if the JSON is invalid |
| 80 | */ |
| 81 | public MappingAction decode() { |
| 82 | String type = nullIsIllegal(json.get(MappingActionCodec.TYPE), |
| 83 | MappingActionCodec.TYPE + MappingActionCodec.ERROR_MESSAGE).asText(); |
| 84 | |
| 85 | if (type.equals(MappingAction.Type.DROP.name())) { |
| 86 | return decodeDropAction(); |
| 87 | } else if (type.equals(MappingAction.Type.FORWARD.name())) { |
| 88 | return decodeForwardAction(); |
| 89 | } else if (type.equals(MappingAction.Type.NATIVE_FORWARD.name())) { |
| 90 | return decodeNativeForwardAction(); |
| 91 | } else if (type.equals(MappingAction.Type.NO_ACTION.name())) { |
| 92 | return decodeNoAction(); |
| 93 | } |
| 94 | throw new IllegalArgumentException("MappingAction type " |
| 95 | + type + " is not supported"); |
| 96 | } |
| 97 | } |