telegraf/logger/event_logger.go

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package logger
import (
"io"
"strings"
"github.com/influxdata/wlog"
"github.com/kardianos/service"
)
const (
LogTargetEventlog = "eventlog"
)
type eventLogger struct {
logger service.Logger
}
func (t *eventLogger) Write(b []byte) (n int, err error) {
loc := prefixRegex.FindIndex(b)
n = len(b)
if loc == nil {
err = t.logger.Info(b)
} else if n > 2 { //skip empty log messages
line := strings.Trim(string(b[loc[1]:]), " \t\r\n")
switch rune(b[loc[0]]) {
case 'I':
err = t.logger.Info(line)
case 'W':
err = t.logger.Warning(line)
case 'E':
err = t.logger.Error(line)
}
}
return
}
type eventLoggerCreator struct {
serviceLogger service.Logger
}
func (e *eventLoggerCreator) CreateLogger(config LogConfig) (io.Writer, error) {
return wlog.NewWriter(&eventLogger{logger: e.serviceLogger}), nil
}
func RegisterEventLogger(serviceLogger service.Logger) {
registerLogger(LogTargetEventlog, &eventLoggerCreator{serviceLogger: serviceLogger})
}