org.jooby.eventbus

Class EventBusby

java.lang.Object

org.jooby.eventbus.EventBusby

All Implemented Interfaces:

Jooby.Module

public class EventBusby
extends Object
implements Jooby.Module

EventBus

EventBus is an open-source library for Java using the publisher/subscriber pattern for loose coupling. EventBus enables central communication to decoupled classes with just a few lines of code – simplifying the code, removing dependencies, and speeding up app development.

usage

 {
   use(new EventBusby()
     .register(new MySubscriber())
   );

   post("/message", req -> {
     EventBus bus = require(EventBus.class);

     MessageEvent event = req.body(MessageEvent.class);

     bus.post(event);
   });
 }
 

guice subscribers

EventBus module supports Guice subscribers:

 {
   use(new EventBusby()
     .register(MySubscriber.class)
   );
 }
 

Here the MySubscriber class will be provisioned by Guice.

custom EventBus

Jooby uses the default EventBus: EventBus.getDefault(), you can provide a custom EventBus at creation time:

 {
   use(new EventBusby(() -> {
     return EventBus.builder()
       .logNoSubscriberMessages(false)
       .sendNoSubscriberEvent(false)
       .build();
   }));
 }
 

That's all! Happy coding!!

Since:

1.5.0

Author:

edgar

Constructor Summary

Constructors

Constructor and Description
EventBusby() Creates a new EventBus using the default EventBus.
EventBusby(Function<com.typesafe.config.Config,org.greenrobot.eventbus.EventBus> factory) Creates a new EventBus using the given factory.
EventBusby(Supplier<org.greenrobot.eventbus.EventBus> factory) Creates a new EventBus using the given factory.

Method Summary

Modifier and Type	Method and Description
void	configure(Env env, com.typesafe.config.Config conf, com.google.inject.Binder binder)
EventBusby	register(Class subscriber) Register an event subscriber.
EventBusby	register(Object subscriber) Register an event subscriber.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jooby.Jooby.Module

config

Constructor Detail

EventBusby

public EventBusby(@Nonnull
                  Function<com.typesafe.config.Config,org.greenrobot.eventbus.EventBus> factory)

Creates a new EventBus using the given factory.

Parameters:

factory - EventBus factory.

EventBusby

public EventBusby(@Nonnull
                  Supplier<org.greenrobot.eventbus.EventBus> factory)

Creates a new EventBus using the given factory.

Parameters:

factory - EventBus factory.

EventBusby

public EventBusby()

Creates a new EventBus using the default EventBus.

Method Detail

register

public EventBusby register(@Nonnull
                           Object subscriber)

Register an event subscriber.

Parameters:

subscriber - Event subscriber.

Returns:

This module.

register

public EventBusby register(@Nonnull
                           Class subscriber)

Register an event subscriber. Subscriber will be provisioned by Guice.

Parameters:

subscriber - Event subscriber.

Returns:

This module.

configure

public void configure(Env env,
                      com.typesafe.config.Config conf,
                      com.google.inject.Binder binder)

Specified by:

configure in interface Jooby.Module