simpleLoggerHandler function

void simpleLoggerHandler(LogRecord record)

A simple handler for Logger.onRecord, printing each record to stdout.

Use it to configure your root logger:

Logger("myorg").onRecord.listen(simpleLoggerHandler);

Note: printing is deferred via Future(...), so records may be lost if the process crashes before the event loop drains.

Implementation

void simpleLoggerHandler(LogRecord record) {
  //for better response time, do it async (since the onRecord stream is sync)
  Future(() {
    print([
      "${record.time}:${record.loggerName}:${record.sequenceNumber}",
      "${record.level}: ${record.message}",
      if (record.error != null) "Cause: ${record.error}",
      if (record.stackTrace != null) "${record.stackTrace}",
    ].join("\n"));
  });
}