| /* |
| * 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.JsonNode; |
| import com.fasterxml.jackson.databind.node.ArrayNode; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.cluster.RoleInfo; |
| import org.onosproject.codec.CodecContext; |
| import org.onosproject.codec.JsonCodec; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.stream.IntStream; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.onlab.util.Tools.nullIsIllegal; |
| |
| /** |
| * Codec for role info. |
| */ |
| public final class RoleInfoCodec extends JsonCodec<RoleInfo> { |
| |
| // JSON field names |
| private static final String MASTER = "master"; |
| private static final String BACKUPS = "backups"; |
| |
| private static final String MISSING_MEMBER_MESSAGE = " member is required in RoleInfo"; |
| |
| @Override |
| public ObjectNode encode(RoleInfo roleInfo, CodecContext context) { |
| checkNotNull(roleInfo, "RoleInfo cannot be null"); |
| |
| ObjectNode result = context.mapper().createObjectNode(); |
| |
| if (roleInfo.master() != null) { |
| result.put(MASTER, roleInfo.master().id()); |
| } |
| |
| ArrayNode backups = context.mapper().createArrayNode(); |
| roleInfo.backups().forEach(backup -> backups.add(backup.id())); |
| |
| if (!roleInfo.backups().isEmpty()) { |
| result.set(BACKUPS, backups); |
| } |
| |
| return result; |
| } |
| |
| @Override |
| public RoleInfo decode(ObjectNode json, CodecContext context) { |
| if (json == null || !json.isObject()) { |
| return null; |
| } |
| |
| // parse node identifier of master |
| NodeId nodeId = json.get(MASTER) == null ? |
| null : NodeId.nodeId(json.get(MASTER).asText()); |
| |
| // parse node identifier of backups |
| List<NodeId> backups = new ArrayList<>(); |
| |
| ArrayNode backupsJson = (ArrayNode) nullIsIllegal(json.get(BACKUPS), |
| BACKUPS + MISSING_MEMBER_MESSAGE); |
| |
| IntStream.range(0, backupsJson.size()).forEach(i -> { |
| JsonNode backupJson = nullIsIllegal(backupsJson.get(i), |
| "Backup node id cannot be null"); |
| backups.add(NodeId.nodeId(backupJson.asText())); |
| }); |
| |
| return new RoleInfo(nodeId, backups); |
| } |
| } |