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Merge pull request #114 from kevpar/etw-logrus-level-map

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Map Logrus level to standard ETW level
This commit is contained in:
Justin
2019-03-19 09:55:57 -07:00
committed by GitHub
parent 4de24ed3e8 b246ce4803
commit a6c66acae5
1 changed files with 14 additions and 4 deletions
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pkg/etwlogrus/hook.go
+14 -4
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@@ -40,9 +40,22 @@ func (h *Hook) Levels() []logrus.Level {
} }
} }
var logrusToETWLevelMap = map[logrus.Level]etw.Level{
logrus.PanicLevel: etw.LevelAlways,
logrus.FatalLevel: etw.LevelCritical,
logrus.ErrorLevel: etw.LevelError,
logrus.WarnLevel: etw.LevelWarning,
logrus.InfoLevel: etw.LevelInfo,
logrus.DebugLevel: etw.LevelVerbose,
logrus.TraceLevel: etw.LevelVerbose,
}
// Fire receives each Logrus entry as it is logged, and logs it to ETW. // Fire receives each Logrus entry as it is logged, and logs it to ETW.
func (h *Hook) Fire(e *logrus.Entry) error { func (h *Hook) Fire(e *logrus.Entry) error {
level := etw.Level(e.Level) // Logrus defines more levels than ETW typically uses, but analysis is
// easiest when using a consistent set of levels across ETW providers, so we
// map the Logrus levels to ETW levels.
level := logrusToETWLevelMap[e.Level]
if !h.provider.IsEnabledForLevel(level) { if !h.provider.IsEnabledForLevel(level) {
return nil return nil
} }
@@ -56,9 +69,6 @@ func (h *Hook) Fire(e *logrus.Entry) error {
fields = append(fields, getFieldOpt(k, v)) fields = append(fields, getFieldOpt(k, v))
} }
// We could try to map Logrus levels to ETW levels, but we would lose some
// fidelity as there are fewer ETW levels. So instead we use the level
// directly.
return h.provider.WriteEvent( return h.provider.WriteEvent(
"LogrusEntry", "LogrusEntry",
etw.WithEventOpts(etw.WithLevel(level)), etw.WithEventOpts(etw.WithLevel(level)),