[[metric]]  # 定义一个指标配置
context = "test_histo"  # 指标的上下文或分类，这里是 "test_histo"，表示这是一个用于测试的直方图
# SQL 查询，选择了多个字段来模拟直方图的不同桶（buckets）和相关的计数值
request = "SELECT 'firstlabel' as label1, 'secondlabel' as label2, 3 as le_20, 19 as le_40, 31 as le_60, 40 as le_80, 45 as count, 123.45 as data FROM DUAL"
# 描述字段 data 为直方图类型，表示数据字段的所有值的总和
metricsdesc = { data = "Histogram - sum total of all values in the data field." }
# 指定 data 字段的类型为直方图（histogram）
metricstype = { data = "histogram" }
# 定义标签字段，这里是 "label1" 和 "label2"，可以作为直方图的维度来区分数据
labels = [ "label1", "label2" ]
# 配置每个桶（bucket）的阈值，用于定义直方图的范围
metricsbuckets = { data = { le_20 = "20", le_40 = "40", le_60 = "60", le_80 = "80" } }


# 该直方图指标将生成如下形式的度量数据：
# HELP xugudb_test_histo_data Histogram - sum total of all values in the data field.
# TYPE xugudb_test_histo_data histogram
# xugudb_test_histo_data_bucket{label1="firstlabel",label2="secondlabel",le="20"} 3
# xugudb_test_histo_data_bucket{label1="firstlabel",label2="secondlabel",le="40"} 19
# xugudb_test_histo_data_bucket{label1="firstlabel",label2="secondlabel",le="60"} 31
# xugudb_test_histo_data_bucket{label1="firstlabel",label2="secondlabel",le="80"} 40
# xugudb_test_histo_data_bucket{label1="firstlabel",label2="secondlabel",le="+Inf"} 45
# xugudb_test_histo_data_sum{label1="firstlabel",label2="secondlabel"} 123.45
# xugudb_test_histo_data_count{label1="firstlabel",label2="secondlabel"} 45