sink_logger 0.1.0

sink_logger: ^0.1.0 copied to clipboard

example/sink_logger_example.dart

import 'dart:io';

import 'package:sink_logger/sink_logger.dart';

Future<void> main() async {
  // The whole setup, once per isolate entry point. The console sink keeps its
  // default — dart:developer's log, which a Flutter app or an attached
  // DevTools surfaces and a plain `dart run` stays quiet about.
  configureLogger(const LoggerConfig(tagPrefix: 'App'));

  // Stands in for a crash reporter. It may ship publishableMessage and
  // nothing else; an empty one means the entry never leaves the device.
  final forwarder = LogBuffer.instance.events.listen((event) {
    final text = event.publishableMessage;
    if (text.isEmpty) return;
    stdout.writeln('off-device: $text');
  });

  log('starting up', name: 'Boot');

  // One call, three different texts: the console gets the raw token, the
  // buffer keeps a trimmed line, the forwarder publishes only the outcome.
  log(
    'auth token=super-secret-value',
    name: 'AuthRepo',
    bufferedMessage: 'auth token=<redacted>',
    sanitizedMessage: 'auth token acquired',
  );

  // An empty sanitizedMessage keeps the body off the wire, while the export
  // still has it for a bug report.
  log('response body: {"id":1}', name: 'Http', sanitizedMessage: '');

  // Subscribers are notified in a later microtask, so let them run before
  // tearing the subscription down.
  await Future<void>.delayed(Duration.zero);
  await forwarder.cancel();

  stdout
    ..writeln('\nwhat export() hands to a bug report:')
    ..writeln(LogBuffer.instance.export(header: 'sink_logger example'));
}