anchor.diff:        ..resource = gaeResource
         ..timestamp = nowTimestamp
         ..severity = _currentSeverity
  -      ..logName = _sharedLoggingService.logName;
  +      ..logName = _sharedLoggingService.requestLogName;
   
       _resetState();
   
  
positive.code:           _makeLabel('module_id', serviceId),
            _makeLabel('zone', zoneId),
          ],
          logName =
              'projects/$projectId/logs/appengine.googleapis.com%2Frequest_log';
  
    static _makeLabel(String key, String value) {
      return new api.MonitoredResource_LabelsEntry()
  
negative.code:   }
  }
  
  /// A [appengine.Logging] adapter which sends log entries off via the
  /// [SharedLoggingService].
  class GrpcBackgroundLoggingImpl extends appengine.Logging {
    final SharedLoggingService _sharedLoggingService;
  
    GrpcBackgroundLoggingImpl(this._sharedLoggingService);
  
    void log(appengine.LogLevel level, String message, {DateTime timestamp}) {
      api.LogSeverity severity = _severityFromLogLevel(level);
  
      final int now = new DateTime.now().toUtc().millisecondsSinceEpoch;
      final api.Timestamp nowTimestamp = _protobufTimestampFromMilliseconds(now);
  
      final gaeResource = new api.MonitoredResource()
        ..type = 'gae_app'
        ..labels.addAll(_sharedLoggingService.resourceLabels);
  
      final logEntry = new api.LogEntry()
        ..textPayload = message
        ..resource = gaeResource
        ..timestamp = nowTimestamp
        ..severity = severity
        ..logName = _sharedLoggingService.backgroundLogName;
  
      _sharedLoggingService.enqueue(logEntry);
    }
  
    Future flush() => new Future.value();
  }
  
  /// A [appengine.Logging] adapter which uses the gRPC logging API to send
  /// logs asynchronously to the Stackdriver logging service.
  class SharedLoggingService {
  