Spring Cloud Task - launch task from maven repository in docker container - spring

Question

I learn Spring Cloud Task and I write simple application that is divided into 3 services. First is a TaskApplication that have only main() and implements CommandLineRunner, second is a TaskIntakeApplication that receives request and send them to RabbitMQ, third service is an TaskLauncherApplication that receives messages from RabbitMQ and runs the task with received parameters.
#Component
#EnableBinding(Source.class)
public class TaskProcessor {
#Autowired
private Source source;
public void publishRequest(String arguments) {
final String url = "maven://groupId:artifatcId:jar:version";
final List<String> args = Arrays.asList(arguments.split(","));
final TaskLaunchRequest request = new TaskLaunchRequest(url, args, null, null, "TaskApplication");
final GenericMessage<TaskLaunchRequest> message = new GenericMessage<>(request);
source.output().send(message);
}
}
And as you can see I call my built artifact by giving maven url but I wonder how can I call artifact from another docker container?

Answer 1

If you intend to launch a task application from an upstream event (e.g., a new file event; a new DB record event; a new message in Rabbit event, etc.,), you'd simply use the respective out-of-the-box applications and then launch the task via the Task Launcher.
Follow this example on how the 3-steps are orchestrated via SCDF's DSL.
Perhaps you could consider reusing the existing apps instead of reinventing them unless you have got a completely different requirement and that these apps cannot meet it. I'd suggest trying to get the example mentioned above working locally before you consider extending the behavior.