private void queryAppHierarchy()

in hertzbeat-manager/src/main/java/org/apache/hertzbeat/manager/service/impl/AppServiceImpl.java [290:356]
65 lines of code
13 McCabe index (conditional complexity)

    private void queryAppHierarchy(String lang, LinkedList<Hierarchy> hierarchies, Job job) {
        var hierarchyApp = new Hierarchy();
        hierarchyApp.setCategory(job.getCategory());
        hierarchyApp.setValue(job.getApp());
        hierarchyApp.setHide(job.isHide());
        var nameMap = job.getName();
        if (nameMap != null && !nameMap.isEmpty()) {
            var i18nName = CommonUtil.getLangMappingValueFromI18nMap(lang, nameMap);
            if (i18nName != null) {
                hierarchyApp.setLabel(i18nName);
            }
        }
        List<Hierarchy> hierarchyMetricList = new LinkedList<>();
        if (DispatchConstants.PROTOCOL_PROMETHEUS.equalsIgnoreCase(job.getApp())) {
            List<Monitor> monitors = monitorDao.findMonitorsByAppEquals(job.getApp());
            for (Monitor monitor : monitors) {
                List<CollectRep.MetricsData> metricsDataList = warehouseService.queryMonitorMetricsData(monitor.getId());
                for (CollectRep.MetricsData metricsData : metricsDataList) {
                    var hierarchyMetric = new Hierarchy();
                    hierarchyMetric.setValue(metricsData.getMetrics());
                    hierarchyMetric.setLabel(metricsData.getMetrics());
                    List<Hierarchy> hierarchyFieldList = metricsData.getFields().stream()
                            .map(item -> {
                                var hierarchyField = new Hierarchy();
                                hierarchyField.setValue(item.getName());
                                hierarchyField.setLabel(item.getName());
                                hierarchyField.setIsLeaf(true);
                                hierarchyField.setType((byte) item.getType());
                                hierarchyField.setUnit(item.getUnit());
                                return hierarchyField;
                            }).collect(Collectors.toList());
                    hierarchyMetric.setChildren(hierarchyFieldList);
                    // combine Hierarchy Metrics
                    combineHierarchyMetrics(hierarchyMetricList, hierarchyMetric);
                }
            }
            hierarchyApp.setChildren(hierarchyMetricList);
            hierarchies.addFirst(hierarchyApp);
        } else {
            if (job.getMetrics() != null) {
                for (var metrics : job.getMetrics()) {
                    var hierarchyMetric = new Hierarchy();
                    hierarchyMetric.setValue(metrics.getName());
                    var metricsI18nName = CommonUtil.getLangMappingValueFromI18nMap(lang, metrics.getI18n());
                    hierarchyMetric.setLabel(metricsI18nName != null ? metricsI18nName : metrics.getName());
                    List<Hierarchy> hierarchyFieldList = new LinkedList<>();
                    if (metrics.getFields() != null) {
                        for (var field : metrics.getFields()) {
                            var hierarchyField = new Hierarchy();
                            hierarchyField.setValue(field.getField());
                            var metricI18nName = CommonUtil.getLangMappingValueFromI18nMap(lang, field.getI18n());
                            hierarchyField.setLabel(metricI18nName != null ? metricI18nName : field.getField());
                            hierarchyField.setIsLeaf(true);
                            // for metric
                            hierarchyField.setType(field.getType());
                            hierarchyField.setUnit(field.getUnit());
                            hierarchyFieldList.add(hierarchyField);
                        }
                        hierarchyMetric.setChildren(hierarchyFieldList);
                    }
                    hierarchyMetricList.add(hierarchyMetric);
                }
            }
            hierarchyApp.setChildren(hierarchyMetricList);
            hierarchies.add(hierarchyApp);
        }
    }