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| 1 | +package com.tuya.connector.open.messaging; |
| 2 | + |
| 3 | +import com.alibaba.fastjson.JSON; |
| 4 | +import com.alibaba.fastjson.JSONObject; |
| 5 | +import com.tuya.connector.open.messaging.event.BaseTuyaMessage; |
| 6 | +import com.tuya.connector.open.messaging.event.UnknownMessage; |
| 7 | +import lombok.SneakyThrows; |
| 8 | +import lombok.extern.slf4j.Slf4j; |
| 9 | +import org.reflections.Reflections; |
| 10 | + |
| 11 | +import java.util.HashMap; |
| 12 | +import java.util.Map; |
| 13 | +import java.util.Objects; |
| 14 | +import java.util.Set; |
| 15 | + |
| 16 | +/** |
| 17 | + * <p> TODO |
| 18 | + * |
| 19 | + * @author 丘枫(余秋风 qiufeng.yu@tuya.com) |
| 20 | + * @since 2021/3/24 3:56 下午 |
| 21 | + */ |
| 22 | +@Slf4j |
| 23 | +public class MessageFactory { |
| 24 | + |
| 25 | + private static Map<String, Class<? extends BaseTuyaMessage>> messageHandler = new HashMap<>(); |
| 26 | + |
| 27 | + static { |
| 28 | + Reflections reflections = new Reflections("com.tuya.connector.open.messaging.event"); |
| 29 | + Set<Class<? extends BaseTuyaMessage>> classSet = reflections.getSubTypesOf(BaseTuyaMessage.class); |
| 30 | + classSet.forEach(handler -> { |
| 31 | + try { |
| 32 | + BaseTuyaMessage baseTuyaMessage = handler.newInstance(); |
| 33 | + messageHandler.put(baseTuyaMessage.type(), handler); |
| 34 | + } catch (Exception ignore) { |
| 35 | + log.error("ignore {} handler.", handler.getSimpleName()); |
| 36 | + } |
| 37 | + }); |
| 38 | + } |
| 39 | + |
| 40 | + @SneakyThrows |
| 41 | + public static BaseTuyaMessage extract(SourceMessage sourceMessage, String sk) { |
| 42 | + String data; |
| 43 | + if (sourceMessage.getEncryptPayload() != null) { |
| 44 | + // problem left over by history |
| 45 | + data = sourceMessage.getEncryptPayload(); |
| 46 | + } else { |
| 47 | + data = sourceMessage.getData(); |
| 48 | + } |
| 49 | + String decryptData = AESBase64Utils.decrypt(data, sk.substring(8, 24)); |
| 50 | + JSONObject messageBody = JSON.parseObject(decryptData); |
| 51 | + String bizCode = null; |
| 52 | + if (Objects.nonNull(messageBody) && messageBody.size() > 0) { |
| 53 | + bizCode = messageBody.getString("bizCode"); |
| 54 | + } |
| 55 | + return generate(bizCode, sourceMessage, messageBody); |
| 56 | + } |
| 57 | + |
| 58 | + @SneakyThrows |
| 59 | + public static BaseTuyaMessage generate(String bizCode, SourceMessage sourceMessage, JSONObject messageBody) { |
| 60 | + Class<? extends BaseTuyaMessage> msgHandler = messageHandler.getOrDefault(bizCode, UnknownMessage.class); |
| 61 | + BaseTuyaMessage tuyaMessage = msgHandler.newInstance(); |
| 62 | + tuyaMessage.defaultBuild(sourceMessage, messageBody); |
| 63 | + return tuyaMessage; |
| 64 | + } |
| 65 | +} |
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