治理暂态事件、文件解析功能

iot-access/access-api/src/main/java/com/njcn/access/api/CsTopicFeignClient.java

@@ -0,0 +1,18 @@
+package com.njcn.access.api;
+
+import com.njcn.access.api.fallback.CsTopicClientFallbackFactory;
+import com.njcn.common.pojo.constant.ServerInfo;
+import com.njcn.common.pojo.response.HttpResult;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+/**
+ * @author xy
+ */
+@FeignClient(value = ServerInfo.ACCESS_BOOT, path = "/topic", fallbackFactory = CsTopicClientFallbackFactory.class,contextId = "topic")
+public interface CsTopicFeignClient {
+
+    @PostMapping("/find")
+    HttpResult<String> find(@RequestParam("nDid") String nDid);
+}

iot-access/access-api/src/main/java/com/njcn/access/api/fallback/CsTopicClientFallbackFactory.java

@@ -0,0 +1,34 @@
+package com.njcn.access.api.fallback;
+
+import com.njcn.access.api.CsTopicFeignClient;
+import com.njcn.common.pojo.enums.response.CommonResponseEnum;
+import com.njcn.common.pojo.exception.BusinessException;
+import com.njcn.common.pojo.response.HttpResult;
+import feign.hystrix.FallbackFactory;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author xy
+ */
+@Slf4j
+@Component
+public class CsTopicClientFallbackFactory implements FallbackFactory<CsTopicFeignClient> {
+    @Override
+    public CsTopicFeignClient create(Throwable cause) {
+        //判断抛出异常是否为解码器抛出的业务异常
+        Enum<?> exceptionEnum = CommonResponseEnum.SERVICE_FALLBACK;
+        if (cause.getCause() instanceof BusinessException) {
+            BusinessException businessException = (BusinessException) cause.getCause();
+        }
+        Enum<?> finalExceptionEnum = exceptionEnum;
+        return new CsTopicFeignClient() {
+
+            @Override
+            public HttpResult<String> find(String nDid) {
+                log.error("{}异常，降级处理，异常为：{}","获取设备支持的主题版本",cause.toString());
+                throw new BusinessException(finalExceptionEnum);
+            }
+        };
+    }
+}