platform/core/pipeline/examples/basic_usage.dart
2024-10-04 00:05:16 -07:00

36 lines
977 B
Dart

import 'package:angel3_framework/angel3_framework.dart';
import 'package:angel3_framework/http.dart';
import 'package:angel3_container/mirrors.dart';
import 'package:angel3_pipeline/pipeline.dart';
class GreetingPipe {
dynamic handle(String input, Function next) {
return next('Hello, $input');
}
}
class ExclamationPipe {
dynamic handle(String input, Function next) {
return next('$input!');
}
}
void main() async {
var app = Angel(reflector: MirrorsReflector());
var http = AngelHttp(app);
app.container.registerSingleton((c) => Pipeline(c));
app.get('/', (req, res) async {
var pipeline = app.container.make<Pipeline>();
var result = await pipeline
.send('World')
.through(['GreetingPipe', 'ExclamationPipe']).then(
(result) => result.toUpperCase());
res.write(result); // Outputs: "HELLO, WORLD!"
});
await http.startServer('localhost', 3000);
print('Server started on http://localhost:3000');
}