Source file src/github.com/grpc-ecosystem/go-grpc-prometheus/metric_options.go

Documentation: github.com/grpc-ecosystem/go-grpc-prometheus

     1  package grpc_prometheus
     2  
     3  import (
     4  	prom "github.com/prometheus/client_golang/prometheus"
     5  )
     6  
     7  // A CounterOption lets you add options to Counter metrics using With* funcs.
     8  type CounterOption func(*prom.CounterOpts)
     9  
    10  type counterOptions []CounterOption
    11  
    12  func (co counterOptions) apply(o prom.CounterOpts) prom.CounterOpts {
    13  	for _, f := range co {
    14  		f(&o)
    15  	}
    16  	return o
    17  }
    18  
    19  // WithConstLabels allows you to add ConstLabels to Counter metrics.
    20  func WithConstLabels(labels prom.Labels) CounterOption {
    21  	return func(o *prom.CounterOpts) {
    22  		o.ConstLabels = labels
    23  	}
    24  }
    25  
    26  // A HistogramOption lets you add options to Histogram metrics using With*
    27  // funcs.
    28  type HistogramOption func(*prom.HistogramOpts)
    29  
    30  // WithHistogramBuckets allows you to specify custom bucket ranges for histograms if EnableHandlingTimeHistogram is on.
    31  func WithHistogramBuckets(buckets []float64) HistogramOption {
    32  	return func(o *prom.HistogramOpts) { o.Buckets = buckets }
    33  }
    34  
    35  // WithHistogramConstLabels allows you to add custom ConstLabels to
    36  // histograms metrics.
    37  func WithHistogramConstLabels(labels prom.Labels) HistogramOption {
    38  	return func(o *prom.HistogramOpts) {
    39  		o.ConstLabels = labels
    40  	}
    41  }
    42  

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