micro/metrics/logging/reporter.go

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package logging
import (
"time"
log "github.com/micro/go-micro/v3/logger"
"github.com/micro/go-micro/v3/metrics"
)
// Reporter is an implementation of metrics.Reporter:
type Reporter struct {
logger log.Logger
options metrics.Options
}
// New returns a configured noop reporter:
func New(opts ...metrics.Option) *Reporter {
options := metrics.NewOptions(opts...)
logger := log.NewLogger(log.WithFields(convertTags(options.DefaultTags)))
logger.Log(log.InfoLevel, "Metrics/Logging - metrics will be logged (at TRACE level)")
return &Reporter{
logger: logger,
options: metrics.NewOptions(opts...),
}
}
// Count implements the metrics.Reporter interface Count method:
func (r *Reporter) Count(metricName string, value int64, tags metrics.Tags) error {
r.logger.Logf(log.TraceLevel, "Count metric: %s", tags)
return nil
}
// Gauge implements the metrics.Reporter interface Gauge method:
func (r *Reporter) Gauge(metricName string, value float64, tags metrics.Tags) error {
r.logger.Logf(log.TraceLevel, "Gauge metric: %s", tags)
return nil
}
// Timing implements the metrics.Reporter interface Timing method:
func (r *Reporter) Timing(metricName string, value time.Duration, tags metrics.Tags) error {
r.logger.Logf(log.TraceLevel, "Timing metric: %s", tags)
return nil
}
// convertTags turns Tags into prometheus labels:
func convertTags(tags metrics.Tags) map[string]interface{} {
labels := make(map[string]interface{})
for key, value := range tags {
labels[key] = value
}
return labels
}