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metrics_hook.go
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/
metrics_hook.go
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package log
import (
metrics "github.com/rcrowley/go-metrics"
"github.com/sirupsen/logrus"
)
// Metrics is a logrus hook-compliant struct that records metrics about logging
// when added to a logrus.Logger
type Metrics map[logrus.Level]metrics.Meter
// NewMetrics creates a new hook for recording metrics.
func NewMetrics() *Metrics {
return &Metrics{
logrus.DebugLevel: metrics.NewMeter(),
logrus.InfoLevel: metrics.NewMeter(),
logrus.WarnLevel: metrics.NewMeter(),
logrus.ErrorLevel: metrics.NewMeter(),
logrus.PanicLevel: metrics.NewMeter(),
}
}
// Fire is triggered by logrus, in response to a logging event
func (m *Metrics) Fire(e *logrus.Entry) error {
(*m)[e.Level].Mark(1)
return nil
}
// Levels returns the logging levels that will trigger this hook to run. In
// this case, all of them.
func (m *Metrics) Levels() []logrus.Level {
return []logrus.Level{
logrus.DebugLevel,
logrus.InfoLevel,
logrus.WarnLevel,
logrus.ErrorLevel,
logrus.PanicLevel,
}
}