对需要向设备发起请求的http请求，使用缓存，等待设备请求返回的时候一次性释放所有请求

648540858

2021-11-02 3b21f385cdae7d94fce1ebba6abb06a893f57114

 src/main/java/com/genersoft/iot/vmp/vmanager/gb28181/ptz/PtzController.java

@@ -9,6 +9,7 @@
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.context.request.async.DeferredResult;

@@ -18,8 +19,9 @@
import com.genersoft.iot.vmp.gb28181.transmit.callback.DeferredResultHolder;
import com.genersoft.iot.vmp.gb28181.transmit.callback.RequestMessage;
import com.genersoft.iot.vmp.gb28181.transmit.cmd.impl.SIPCommander;
import com.genersoft.iot.vmp.gb28181.utils.XmlUtil;
import com.genersoft.iot.vmp.storager.IVideoManagerStorager;

import java.util.UUID;

@Api(tags = "云台控制")
@CrossOrigin
@@ -101,23 +103,31 @@
         logger.debug("设备预置位查询API调用");
      }
      Device device = storager.queryVideoDevice(deviceId);
      cmder.presetQuery(device, channelId, event -> {
         Response response = event.getResponse();
         RequestMessage msg = new RequestMessage();
         msg.setId(DeferredResultHolder.CALLBACK_CMD_PRESETQUERY + (XmlUtil.isEmpty(channelId) ? deviceId : channelId));
         msg.setData(String.format("获取设备预置位失败，错误码： %s, %s", response.getStatusCode(), response.getReasonPhrase()));
         resultHolder.invokeResult(msg);
      });
        DeferredResult<ResponseEntity<String>> result = new DeferredResult<ResponseEntity<String >> (3 * 1000L);
      String uuid =  UUID.randomUUID().toString();
      String key =  DeferredResultHolder.CALLBACK_CMD_PRESETQUERY + (StringUtils.isEmpty(channelId) ? deviceId : channelId);
      DeferredResult<ResponseEntity<String>> result = new DeferredResult<ResponseEntity<String >> (3 * 1000L);
      result.onTimeout(()->{
         logger.warn(String.format("获取设备预置位超时"));
         // 释放rtpserver
         RequestMessage msg = new RequestMessage();
         msg.setId(DeferredResultHolder.CALLBACK_CMD_PRESETQUERY + (XmlUtil.isEmpty(channelId) ? deviceId : channelId));
         msg.setId(uuid);
         msg.setKey(key);
         msg.setData("获取设备预置位超时");
         resultHolder.invokeResult(msg);
      });
      resultHolder.put(DeferredResultHolder.CALLBACK_CMD_PRESETQUERY + (XmlUtil.isEmpty(channelId) ? deviceId : channelId), result);
      resultHolder.put(key, uuid, result);
      if (resultHolder.exist(key, null)) {
         return result;
      }
      cmder.presetQuery(device, channelId, event -> {
         Response response = event.getResponse();
         RequestMessage msg = new RequestMessage();
         msg.setId(uuid);
         msg.setKey(key);
         msg.setData(String.format("获取设备预置位失败，错误码： %s, %s", response.getStatusCode(), response.getReasonPhrase()));
         resultHolder.invokeResult(msg);
      });

      return result;
   }
}