import 'package:pip_services3_elasticsearch/pip_services3_elasticsearch.dart';
var logger = ElasticSearchLogger();
logger.configure(ConfigParams.fromTuples([
'connection.protocol',
'http',
'connection.host',
'localhost',
'connection.port',
9200
]));
logger.setLevel(LogLevel.Debug);
await logger.open("123");
logger.info('123', 'My message');