platform/sandbox/mqueue/example/rpc/service_two.dart

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import 'dart:async';
import 'dart:developer';
import 'package:angel3_mq/mq.dart';
class ServiceTwo with ConsumerMixin {
ServiceTwo() {
MQClient.instance.declareExchange(
exchangeName: 'ServiceRPC',
exchangeType: ExchangeType.direct,
);
_queueName = MQClient.instance.declareQueue('two');
}
late final String _queueName;
Future<void> startListening() async {
MQClient.instance.bindQueue(
queueId: _queueName,
exchangeName: 'ServiceRPC',
bindingKey: 'rpcBinding',
);
subscribe(
queueId: _queueName,
callback: (Message message) async {
log('Service Two got message $message\n');
if (message.headers['type'] == 'RPC') {
switch (message.headers['processId']) {
case 'foo':
final data = await foo();
final Completer completer =
message.headers['completer'] ?? (throw Exception());
completer.complete(data);
default:
}
}
},
);
}
Future<String> foo() async {
// log('Service Two bar\n');
await Future.delayed(const Duration(seconds: 2));
return 'Hello, world!';
}
}