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|
package prometheus
import (
"sync/atomic"
"github.com/prometheus/client_golang/prometheus"
"github.com/sirupsen/logrus"
)
var numErrorsDesc = prometheus.NewDesc(
"gitlab_runner_errors_total",
"The number of caught errors.",
[]string{"level"},
nil,
)
type LogHook struct {
errorsNumber map[logrus.Level]*int64
}
func (lh *LogHook) Levels() []logrus.Level {
return []logrus.Level{
logrus.PanicLevel,
logrus.FatalLevel,
logrus.ErrorLevel,
logrus.WarnLevel,
}
}
func (lh *LogHook) Fire(entry *logrus.Entry) error {
atomic.AddInt64(lh.errorsNumber[entry.Level], 1)
return nil
}
func (lh *LogHook) Describe(ch chan<- *prometheus.Desc) {
ch <- numErrorsDesc
}
func (lh *LogHook) Collect(ch chan<- prometheus.Metric) {
for _, level := range lh.Levels() {
number := float64(atomic.LoadInt64(lh.errorsNumber[level]))
ch <- prometheus.MustNewConstMetric(numErrorsDesc, prometheus.CounterValue, number, level.String())
}
}
func NewLogHook() LogHook {
lh := LogHook{}
levels := lh.Levels()
lh.errorsNumber = make(map[logrus.Level]*int64, len(levels))
for _, level := range levels {
lh.errorsNumber[level] = new(int64)
}
return lh
}
|
