核心代码

java">SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
DateHistogramAggregationBuilder aggregationBuilder = AggregationBuilders
		 // 分组别名
        .dateHistogram("dateDownStreamRequestTime")
         // 查询字段
        .field("downStreamRequestTime")
        .calendarInterval(DateHistogramInterval.DAY)
        .offset("-8h")
        .minDocCount(0)
        .order(BucketOrder.aggregation("_key", true));
sourceBuilder.aggregation(aggregationBuilder);

聚合查询示例

java">@Override
public RequestResult getDailyInvokeCount(InterfaceDTO interfaceDTO) throws Exception {
    Date queryRequestLogStartTime = DateUtil.toDate(interfaceDTO.getQueryRequestLogStartTime(), "yyyy-MM-dd HH:mm:ss");
    Date queryRequestLogEndTime = DateUtil.toDate(interfaceDTO.getQueryRequestLogEndTime(), "yyyy-MM-dd HH:mm:ss");
    List<Date> betweenDates = DateUtil.getBetweenDates(queryRequestLogStartTime, queryRequestLogEndTime);

    BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
    if (interfaceDTO.getOrderId() != null) {
        queryBuilder.must(QueryBuilders.termQuery("orderId", interfaceDTO.getOrderId()));
    }
    if (StringUtil.isNotEmpty(interfaceDTO.getPartnerId())) {
        queryBuilder.must(QueryBuilders.termQuery("partnerId", interfaceDTO.getPartnerId().toLowerCase()));
    }
    if (interfaceDTO.getServiceId() != null) {
        queryBuilder.must(QueryBuilders.termQuery("serviceId", interfaceDTO.getServiceId()));
    }
    if (StringUtil.isNotEmpty(interfaceDTO.getAppId())) {
        queryBuilder.must(QueryBuilders.termQuery("appId", interfaceDTO.getAppId().toLowerCase()));
    }
    if (interfaceDTO.getId() != null) {
        queryBuilder.must(QueryBuilders.termQuery("interfaceId", interfaceDTO.getId()));
    }
    queryBuilder.must(QueryBuilders.rangeQuery("downStreamRequestTime").from(queryRequestLogStartTime.getTime()).to(queryRequestLogEndTime.getTime()));

    SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
    DateHistogramAggregationBuilder aggregationBuilder = AggregationBuilders
            .dateHistogram("dateDownStreamRequestTime")
            .field("downStreamRequestTime")
            .calendarInterval(DateHistogramInterval.DAY)
            .offset("-8h")
            .minDocCount(0)
            .order(BucketOrder.aggregation("_key", true));
    sourceBuilder.aggregation(aggregationBuilder);
    sourceBuilder.query(queryBuilder);

    SearchRequest searchRequest = new SearchRequest(getEsIndices(betweenDates));
    searchRequest.indicesOptions(IndicesOptions.fromOptions(true, true, true, false));
    searchRequest.source(sourceBuilder);

    List<Map<String, Object>> listMap = new ArrayList<>();

    SearchResponse searchResponse = eslClient.search(searchRequest, RequestOptions.DEFAULT);
    Aggregations aggregations = searchResponse.getAggregations();
    if (aggregations == null) {
        return RequestResult.success(interfaceInvokeEmptyData("day", "invokeCount", listMap));
    }

    Histogram histogram = searchResponse.getAggregations().get("dateDownStreamRequestTime");
    for (Histogram.Bucket entry : histogram.getBuckets()) {
        String key = entry.getKeyAsString();
        String time = DateUtil.toString(new Date(Long.parseLong(key)), "yyyy-MM-dd");

        Map<String, Object> map = new LinkedHashMap<>();
        map.put("day", time);
        map.put("invokeCount", entry.getDocCount());
        listMap.add(map);
    }

    for (Date betweenDate : betweenDates) {
        String tempDate = DateUtil.toString(betweenDate, "yyyy-MM-dd");
        Map<String, Object> findMap = listMap.stream().filter(p -> p.get("day").equals(tempDate)).findAny().orElse(null);
        if (findMap == null) {
            Map<String, Object> map = new LinkedHashMap<>();
            map.put("day", tempDate);
            map.put("invokeCount", 0);
            listMap.add(map);
        }
    }
    listMap.remove(listMap.size() - 1);
    listMap = listMap .stream().sorted(Comparator.comparing(map -> map.get("day").toString(), Comparator.naturalOrder())).collect(Collectors.toList());

    return RequestResult.success(listMap);
}