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package prometheus
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A collection of metric reporters. Usually, only CollectorRegistry.default is used.
type snapshot = Sample_set.t LabelSetMap.t MetricFamilyMap.tThe result of reading a set of metrics.
val create : unit -> tcreate () is a fresh registry. This is mostly useful for testing.
val default : tThe default registry.
val register :
t ->
MetricInfo.t ->
(unit -> Sample_set.t LabelSetMap.t) ->
unitregister t metric collector adds metric to the set of metrics being collected. It will call collector () to collect the values each time collect is called.
val register_pre_collect : t -> (unit -> unit) -> unitregister_pre_collect t fn arranges for fn () to be called at the start of each collection. This is useful if one expensive call provides information about multiple metrics.