/
instrument.go
36 lines (32 loc) · 985 Bytes
/
instrument.go
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package user
import (
"github.com/go-kit/kit/metrics"
"time"
)
type instrumentingService struct {
requestCount metrics.Counter
requestLatency metrics.Histogram
errorCount metrics.Counter
Service
}
/*
NewInstrumentService creates a prometheus service that will log request count, error count and latency
*/
func NewInstrumentService(counter metrics.Counter, errorCount metrics.Counter, latency metrics.Histogram, s Service) Service {
return &instrumentingService{
requestCount: counter,
requestLatency: latency,
errorCount: errorCount,
Service: s,
}
}
func (s *instrumentingService) parseInputRequest(in string) (err error) {
defer func(begin time.Time) {
s.requestCount.With("method", "parseInputRequest").Add(1)
s.requestLatency.With("method", "parseInputRequest").Observe(time.Since(begin).Seconds())
if err != nil {
s.errorCount.With("method", "parseInputRequest").Add(1)
}
}(time.Now())
return s.Service.parseInputRequest(in)
}