func NewIOLogSinkFromConfig(cfg *logSinkFileConfig) *IOLogSink {
return &IOLogSink{
formatter: wcg.NewLogRecordFormatter(cfg.Format),
factory: cfg.newFactory(),
color: cfg.Color,
stacklevel: cfg.StackLevel,
}
}
// Return a new IOLogSink object.
// format string can have following variables.
//
// - $TIMESTAMP : timestamp of a log record
// - $LOGLEVEL : log level
// - $SOURCE_FILE : source file name where a record is produced.
// - $SOURCE_LINE : a line no of source file where a record is produced.
// - $GOROUTINE : Goroutine ID
// - $SESSSION_ID : Session ID
// - $REQUEST_ID : Request ID
// - $USER_ID : User ID
// - $TEXT : text message produced by app.
//
// and if it is "", "[$GOROUTINE:$USER_ID:$SESSION_ID:$REQUEST_ID] $TEXT ($SOURCE_FILE#$SOURCE_LINE)" is used.
func NewIOLogSink(format string, writer io.Writer) *IOLogSink {
return &IOLogSink{
formatter: wcg.NewLogRecordFormatter(format),
factory: &writerFactory{writer},
}
}