| /* |
| * Copyright 2017-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.mapping.codec; |
| |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import org.onosproject.codec.CodecContext; |
| import org.onosproject.mapping.instructions.MappingInstruction; |
| import org.onosproject.mapping.instructions.MappingInstructions; |
| import org.onosproject.mapping.instructions.MulticastMappingInstruction; |
| import org.onosproject.mapping.instructions.UnicastMappingInstruction; |
| |
| import static org.onlab.util.Tools.nullIsIllegal; |
| |
| /** |
| * Decoding portion of the mapping instruction codec. |
| */ |
| public final class DecodeMappingInstructionCodecHelper { |
| private final ObjectNode json; |
| private final CodecContext context; |
| |
| /** |
| * Creates a decode mapping instruction codec object. |
| * |
| * @param json JSON object to decode |
| * @param context codec context |
| */ |
| public DecodeMappingInstructionCodecHelper(ObjectNode json, CodecContext context) { |
| this.json = json; |
| this.context = context; |
| } |
| |
| /** |
| * Decodes an unicast mapping instruction. |
| * |
| * @return mapping instruction object decoded from the JSON |
| * @throws IllegalArgumentException if the JSON is invalid |
| */ |
| private MappingInstruction decodeUnicast() { |
| String subType = nullIsIllegal(json.get(MappingInstructionCodec.SUBTYPE), |
| MappingInstructionCodec.SUBTYPE + MappingInstructionCodec.ERROR_MESSAGE).asText(); |
| |
| if (subType.equals(UnicastMappingInstruction.UnicastType.WEIGHT.name())) { |
| int weight = nullIsIllegal(json.get(MappingInstructionCodec.UNICAST_WEIGHT), |
| MappingInstructionCodec.UNICAST_WEIGHT + |
| MappingInstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| return MappingInstructions.unicastWeight(weight); |
| } else if (subType.equals(UnicastMappingInstruction.UnicastType.PRIORITY.name())) { |
| int priority = nullIsIllegal(json.get(MappingInstructionCodec.UNICAST_PRIORITY), |
| MappingInstructionCodec.UNICAST_PRIORITY + |
| MappingInstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| return MappingInstructions.unicastPriority(priority); |
| } |
| throw new IllegalArgumentException("Unicast MappingInstruction subtype " |
| + subType + " is not supported"); |
| } |
| |
| /** |
| * Decodes a multicast mapping instruction. |
| * |
| * @return mapping instruction object decoded from the JSON |
| * @throws IllegalArgumentException if the JSON is invalid |
| */ |
| private MappingInstruction decodeMulticast() { |
| String subType = nullIsIllegal(json.get(MappingInstructionCodec.SUBTYPE), |
| MappingInstructionCodec.SUBTYPE + MappingInstructionCodec.ERROR_MESSAGE).asText(); |
| |
| if (subType.equals(MulticastMappingInstruction.MulticastType.WEIGHT.name())) { |
| int weight = nullIsIllegal(json.get(MappingInstructionCodec.MULTICAST_WEIGHT), |
| MappingInstructionCodec.MULTICAST_WEIGHT + |
| MappingInstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| return MappingInstructions.multicastWeight(weight); |
| } else if (subType.equals(MulticastMappingInstruction.MulticastType.PRIORITY.name())) { |
| int priority = nullIsIllegal(json.get(MappingInstructionCodec.MULTICAST_PRIORITY), |
| MappingInstructionCodec.MULTICAST_PRIORITY + |
| MappingInstructionCodec.MISSING_MEMBER_MESSAGE).asInt(); |
| return MappingInstructions.multicastPriority(priority); |
| } |
| throw new IllegalArgumentException("Multicast MappingInstruction subtype " |
| + subType + " is not supported"); |
| } |
| |
| /** |
| * Decodes the JSON into a mapping instruction object. |
| * |
| * @return MappingInstruction object |
| * @throws IllegalArgumentException if the JSON is invalid |
| */ |
| public MappingInstruction decode() { |
| String type = nullIsIllegal(json.get(MappingInstructionCodec.TYPE), |
| MappingInstructionCodec.TYPE + MappingInstructionCodec.ERROR_MESSAGE).asText(); |
| |
| if (type.equals(MappingInstruction.Type.UNICAST.name())) { |
| return decodeUnicast(); |
| } else if (type.equals(MappingInstruction.Type.MULTICAST.name())) { |
| return decodeMulticast(); |
| } |
| throw new IllegalArgumentException("MappingInstruction type " |
| + type + " is not supported"); |
| } |
| } |