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Sep 2, 2024
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examples: Improved GoCollector example. #1589

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17 changes: 12 additions & 5 deletions examples/gocollector/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -37,11 +37,18 @@ func main() {
// Create a new registry.
reg := prometheus.NewRegistry()

// Add Go module build info.
reg.MustRegister(collectors.NewBuildInfoCollector())
reg.MustRegister(collectors.NewGoCollector(
collectors.WithGoCollectorRuntimeMetrics(collectors.GoRuntimeMetricsRule{Matcher: regexp.MustCompile("/.*")}),
))
// Register metrics from GoCollector collecting statistics from the Go Runtime.
// This enabled default, recommended metrics with the additional, recommended metric for
// goroutine scheduling latencies histogram that is currently bit too expensive for default option.
//
// See the related GopherConUK talk to learn more: https://www.youtube.com/watch?v=18dyI_8VFa0
reg.MustRegister(
collectors.NewGoCollector(
collectors.WithGoCollectorRuntimeMetrics(
collectors.GoRuntimeMetricsRule{Matcher: regexp.MustCompile("/sched/latencies:seconds")},
),
),
)

// Expose the registered metrics via HTTP.
http.Handle("/metrics", promhttp.HandlerFor(
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