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dcs-sdk-java-master/app/src/main/java/com/baidu/duer/dcs/framework/message/Directive.java@45:2aa9f933c8d2, 2017-07-18 (annotated)

Committer:
TMBOY
Date:
Tue Jul 18 16:34:48 2017 +0800
Revision:
45:2aa9f933c8d2
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Who changed what in which revision?

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TMBOY 45:2aa9f933c8d2 1 /*
TMBOY 45:2aa9f933c8d2 2 * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
TMBOY 45:2aa9f933c8d2 3 *
TMBOY 45:2aa9f933c8d2 4 * Licensed under the Apache License, Version 2.0 (the "License");
TMBOY 45:2aa9f933c8d2 5 * you may not use this file except in compliance with the License.
TMBOY 45:2aa9f933c8d2 6 * You may obtain a copy of the License at
TMBOY 45:2aa9f933c8d2 7 *
TMBOY 45:2aa9f933c8d2 8 * http://www.apache.org/licenses/LICENSE-2.0
TMBOY 45:2aa9f933c8d2 9 *
TMBOY 45:2aa9f933c8d2 10 * Unless required by applicable law or agreed to in writing, software
TMBOY 45:2aa9f933c8d2 11 * distributed under the License is distributed on an "AS IS" BASIS,
TMBOY 45:2aa9f933c8d2 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
TMBOY 45:2aa9f933c8d2 13 * See the License for the specific language governing permissions and
TMBOY 45:2aa9f933c8d2 14 * limitations under the License.
TMBOY 45:2aa9f933c8d2 15 */
TMBOY 45:2aa9f933c8d2 16 package com.baidu.duer.dcs.framework.message;
TMBOY 45:2aa9f933c8d2 17
TMBOY 45:2aa9f933c8d2 18 import com.baidu.duer.dcs.util.ObjectMapperUtil;
TMBOY 45:2aa9f933c8d2 19
TMBOY 45:2aa9f933c8d2 20 import org.codehaus.jackson.JsonNode;
TMBOY 45:2aa9f933c8d2 21 import org.codehaus.jackson.JsonParseException;
TMBOY 45:2aa9f933c8d2 22 import org.codehaus.jackson.JsonParser;
TMBOY 45:2aa9f933c8d2 23 import org.codehaus.jackson.annotate.JsonIgnore;
TMBOY 45:2aa9f933c8d2 24 import org.codehaus.jackson.map.DeserializationContext;
TMBOY 45:2aa9f933c8d2 25 import org.codehaus.jackson.map.JsonDeserializer;
TMBOY 45:2aa9f933c8d2 26 import org.codehaus.jackson.map.JsonMappingException;
TMBOY 45:2aa9f933c8d2 27 import org.codehaus.jackson.map.ObjectReader;
TMBOY 45:2aa9f933c8d2 28 import org.codehaus.jackson.map.annotate.JsonDeserialize;
TMBOY 45:2aa9f933c8d2 29 import org.codehaus.jackson.node.ObjectNode;
TMBOY 45:2aa9f933c8d2 30
TMBOY 45:2aa9f933c8d2 31 import java.io.IOException;
TMBOY 45:2aa9f933c8d2 32 import java.util.Iterator;
TMBOY 45:2aa9f933c8d2 33 import java.util.Map;
TMBOY 45:2aa9f933c8d2 34
TMBOY 45:2aa9f933c8d2 35 /**
TMBOY 45:2aa9f933c8d2 36 * 指令类：服务端下发给设备端去执行
TMBOY 45:2aa9f933c8d2 37 * <p>
TMBOY 45:2aa9f933c8d2 38 * Created by wuruisheng on 2017/5/31.
TMBOY 45:2aa9f933c8d2 39 */
TMBOY 45:2aa9f933c8d2 40 @JsonDeserialize(using = Directive.DirectiveDeserializer.class)
TMBOY 45:2aa9f933c8d2 41 public class Directive {
TMBOY 45:2aa9f933c8d2 42 public Header header;
TMBOY 45:2aa9f933c8d2 43 public Payload payload;
TMBOY 45:2aa9f933c8d2 44
TMBOY 45:2aa9f933c8d2 45 @JsonIgnore
TMBOY 45:2aa9f933c8d2 46 public String rawMessage;
TMBOY 45:2aa9f933c8d2 47
TMBOY 45:2aa9f933c8d2 48
TMBOY 45:2aa9f933c8d2 49 public Directive(Header header, JsonNode payload, String rawMessage) throws IOException {
TMBOY 45:2aa9f933c8d2 50 this.header = header;
TMBOY 45:2aa9f933c8d2 51 String namespace = header.getNamespace();
TMBOY 45:2aa9f933c8d2 52 String name = header.getName();
TMBOY 45:2aa9f933c8d2 53 Class<?> payloadType = PayloadConfig.getInstance().findPayloadClass(namespace, name);
TMBOY 45:2aa9f933c8d2 54 if (null != payloadType) {
TMBOY 45:2aa9f933c8d2 55 this.payload = ObjectMapperUtil.instance().getObjectReader().withType(payloadType).readValue(payload);
TMBOY 45:2aa9f933c8d2 56 } else {
TMBOY 45:2aa9f933c8d2 57 this.payload = new Payload();
TMBOY 45:2aa9f933c8d2 58 }
TMBOY 45:2aa9f933c8d2 59
TMBOY 45:2aa9f933c8d2 60 this.rawMessage = rawMessage;
TMBOY 45:2aa9f933c8d2 61 }
TMBOY 45:2aa9f933c8d2 62
TMBOY 45:2aa9f933c8d2 63 /**
TMBOY 45:2aa9f933c8d2 64 * jackson反序列化directive对象
TMBOY 45:2aa9f933c8d2 65 */
TMBOY 45:2aa9f933c8d2 66 public static class DirectiveDeserializer extends JsonDeserializer<Directive> {
TMBOY 45:2aa9f933c8d2 67 @Override
TMBOY 45:2aa9f933c8d2 68 public Directive deserialize(JsonParser jp, DeserializationContext ctx)
TMBOY 45:2aa9f933c8d2 69 throws IOException {
TMBOY 45:2aa9f933c8d2 70 ObjectReader reader = ObjectMapperUtil.instance().getObjectReader();
TMBOY 45:2aa9f933c8d2 71 ObjectNode obj = (ObjectNode) reader.readTree(jp);
TMBOY 45:2aa9f933c8d2 72 Iterator<Map.Entry<String, JsonNode>> elementsIterator = obj.getFields();
TMBOY 45:2aa9f933c8d2 73
TMBOY 45:2aa9f933c8d2 74 String rawMessage = obj.toString();
TMBOY 45:2aa9f933c8d2 75 DialogRequestIdHeader header = null;
TMBOY 45:2aa9f933c8d2 76 JsonNode payloadNode = null;
TMBOY 45:2aa9f933c8d2 77 ObjectReader headerReader =
TMBOY 45:2aa9f933c8d2 78 ObjectMapperUtil.instance().getObjectReader(DialogRequestIdHeader.class);
TMBOY 45:2aa9f933c8d2 79 while (elementsIterator.hasNext()) {
TMBOY 45:2aa9f933c8d2 80 Map.Entry<String, JsonNode> element = elementsIterator.next();
TMBOY 45:2aa9f933c8d2 81 if (element.getKey().equals("header")) {
TMBOY 45:2aa9f933c8d2 82 header = headerReader.readValue(element.getValue());
TMBOY 45:2aa9f933c8d2 83 }
TMBOY 45:2aa9f933c8d2 84 if (element.getKey().equals("payload")) {
TMBOY 45:2aa9f933c8d2 85 payloadNode = element.getValue();
TMBOY 45:2aa9f933c8d2 86 }
TMBOY 45:2aa9f933c8d2 87 }
TMBOY 45:2aa9f933c8d2 88 if (header == null) {
TMBOY 45:2aa9f933c8d2 89 throw ctx.mappingException("Missing header");
TMBOY 45:2aa9f933c8d2 90 }
TMBOY 45:2aa9f933c8d2 91 if (payloadNode == null) {
TMBOY 45:2aa9f933c8d2 92 throw ctx.mappingException("Missing payload");
TMBOY 45:2aa9f933c8d2 93 }
TMBOY 45:2aa9f933c8d2 94
TMBOY 45:2aa9f933c8d2 95 return createDirective(header, payloadNode, rawMessage);
TMBOY 45:2aa9f933c8d2 96 }
TMBOY 45:2aa9f933c8d2 97
TMBOY 45:2aa9f933c8d2 98 private Directive createDirective(Header header, JsonNode payload, String rawMessage)
TMBOY 45:2aa9f933c8d2 99 throws JsonParseException, JsonMappingException, IOException {
TMBOY 45:2aa9f933c8d2 100 return new Directive(header, payload, rawMessage);
TMBOY 45:2aa9f933c8d2 101 }
TMBOY 45:2aa9f933c8d2 102 }
TMBOY 45:2aa9f933c8d2 103
TMBOY 45:2aa9f933c8d2 104 @JsonIgnore
TMBOY 45:2aa9f933c8d2 105 public String getName() {
TMBOY 45:2aa9f933c8d2 106 return header.getName();
TMBOY 45:2aa9f933c8d2 107 }
TMBOY 45:2aa9f933c8d2 108
TMBOY 45:2aa9f933c8d2 109 public Payload getPayload() {
TMBOY 45:2aa9f933c8d2 110 return payload;
TMBOY 45:2aa9f933c8d2 111 }
TMBOY 45:2aa9f933c8d2 112 }