// config of client
String endpoint = "http://bcm.bj.baidubce.com";
String userId = "a0d04d7c***************7b6752ce4"; 
String ak = "ALTAK***************3hVCYG"; 
String sk = "b2c53*******************f9993ac1";

// create a bcm client
BcmClientConfiguration config = new BcmClientConfiguration();
config.setCredentials(new DefaultBceCredentials(ak, sk));
config.setEndpoint(endpoint);
BcmClient bcmClient = new BcmClient(config);

TsdbDimensionTopQuery request = new TsdbDimensionTopQuery();
request.setUserId(userId);
request.setScope("BCE_NAT");
request.setRegion("bj");
request.setMetricName("ConnNumber");
request.setStatistics("average");
request.setStartTime("2024-04-27T07:10:01Z");
request.setEndTime("2024-04-27T07:20:01Z");
Map<String, String> dimensionMap = new HashMap<>();
dimensionMap.put("NatId", "nat-bm********f8");
request.setDimensions(dimensionMap);
Set<String> labels = new HashSet<>();
labels.add("FixIp");
request.setLabels(labels);
request.setTopNum(2);
TsdbDimensionTopResult result = bcmClient.getMetricDimensionTop(request);

{
      "requestId": "34faaba47566446c9ba32cd1d2bf082b",
      "topDatas": [
            {
                  "order": 1,
                  "dimensions": [
                        {
                              "name": "FixIp",
                              "value": "192.168.0.16"
                        }
                  ]
            },
            {
                  "order": 2,
                  "dimensions": [
                        {
                              "name": "FixIp",
                              "value": "192.168.0.15"
                        }
                  ]
            }
      ]
}