| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * 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.codec.impl; |
| |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.codec.CodecContext; |
| import org.onosproject.codec.JsonCodec; |
| import org.onosproject.mastership.MastershipTerm; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.onlab.util.Tools.nullIsIllegal; |
| |
| /** |
| * Codec for mastership term. |
| */ |
| public class MastershipTermCodec extends JsonCodec<MastershipTerm> { |
| |
| // JSON field names |
| private static final String MASTER = "master"; |
| private static final String TERM_NUMBER = "termNumber"; |
| |
| private static final String MISSING_MEMBER_MESSAGE = " member is required in MastershipTerm"; |
| |
| @Override |
| public ObjectNode encode(MastershipTerm term, CodecContext context) { |
| checkNotNull(term, "Mastership term cannot be null"); |
| ObjectNode result = context.mapper().createObjectNode() |
| .put(MASTER, term.master().id()) |
| .put(TERM_NUMBER, term.termNumber()); |
| |
| return result; |
| } |
| |
| @Override |
| public MastershipTerm decode(ObjectNode json, CodecContext context) { |
| if (json == null || !json.isObject()) { |
| return null; |
| } |
| |
| // node identifier of master |
| NodeId nodeId = NodeId.nodeId(nullIsIllegal(json.get(MASTER), |
| MASTER + MISSING_MEMBER_MESSAGE).asText()); |
| |
| // term number |
| long termNumber = nullIsIllegal(json.get(TERM_NUMBER), |
| TERM_NUMBER + MISSING_MEMBER_MESSAGE).asLong(); |
| |
| return MastershipTerm.of(nodeId, termNumber); |
| } |
| } |