io.vertx.axle.core.eventbus

Class EventBus

java.lang.Object

io.vertx.axle.core.eventbus.EventBus

All Implemented Interfaces:

Measured

public class EventBus
extends Object
implements Measured

A Vert.x event-bus is a light-weight distributed messaging system which allows different parts of your application, or different applications and services to communicate with each in a loosely coupled way.

An event-bus supports publish-subscribe messaging, point-to-point messaging and request-response messaging.

Message delivery is best-effort and messages can be lost if failure of all or part of the event bus occurs.

Please refer to the documentation for more information on the event bus.

NOTE: This class has been automatically generated from the original non RX-ified interface using Vert.x codegen.

Field Summary

Fields

Modifier and Type	Field and Description
static TypeArg<EventBus>	__TYPE_ARG

Constructor Summary

Constructors

Constructor and Description
EventBus(io.vertx.core.eventbus.EventBus delegate)

Method Summary

Modifier and Type	Method and Description
<T> EventBus	addInboundInterceptor(Consumer<DeliveryContext<T>> interceptor) Add an interceptor that will be called whenever a message is received by Vert.x
<T> EventBus	addOutboundInterceptor(Consumer<DeliveryContext<T>> interceptor) Add an interceptor that will be called whenever a message is sent from Vert.x
<T> MessageConsumer<T>	consumer(String address) Create a message consumer against the specified address.
<T> MessageConsumer<T>	consumer(String address, Consumer<Message<T>> handler) Create a consumer and register it against the specified address.
boolean	equals(Object o)
io.vertx.core.eventbus.EventBus	getDelegate()
int	hashCode()
boolean	isMetricsEnabled() Whether the metrics are enabled for this measured object
<T> MessageConsumer<T>	localConsumer(String address) Like consumer(java.lang.String) but the address won't be propagated across the cluster.
<T> MessageConsumer<T>	localConsumer(String address, Consumer<Message<T>> handler) Like consumer(java.lang.String) but the address won't be propagated across the cluster.
static EventBus	newInstance(io.vertx.core.eventbus.EventBus arg)
EventBus	publish(String address, Object message) Publish a message.
EventBus	publish(String address, Object message, io.vertx.core.eventbus.DeliveryOptions options) Like but specifying options that can be used to configure the delivery.
<T> MessageProducer<T>	publisher(String address) Create a message publisher against the specified address.
<T> MessageProducer<T>	publisher(String address, io.vertx.core.eventbus.DeliveryOptions options) Like publisher(java.lang.String) but specifying delivery options that will be used for configuring the delivery of the message.
EventBus	registerCodec(io.vertx.core.eventbus.MessageCodec codec) Register a message codec.
<T> EventBus	removeInboundInterceptor(Consumer<DeliveryContext<T>> interceptor) Remove an interceptor that was added by addInboundInterceptor(java.util.function.Consumer<io.vertx.axle.core.eventbus.DeliveryContext<T>>)
<T> EventBus	removeOutboundInterceptor(Consumer<DeliveryContext<T>> interceptor) Remove an interceptor that was added by addOutboundInterceptor(java.util.function.Consumer<io.vertx.axle.core.eventbus.DeliveryContext<T>>)
<T> CompletionStage<Message<T>>	request(String address, Object message) Sends a message and and specify a replyHandler that will be called if the recipient subsequently replies to the message.
<T> CompletionStage<Message<T>>	request(String address, Object message, io.vertx.core.eventbus.DeliveryOptions options) Like but specifying options that can be used to configure the delivery.
<T> CompletionStage<Message<T>>	send(String address, Object message) Deprecated.
<T> CompletionStage<Message<T>>	send(String address, Object message, io.vertx.core.eventbus.DeliveryOptions options) Deprecated.
<T> MessageProducer<T>	sender(String address) Create a message sender against the specified address.
<T> MessageProducer<T>	sender(String address, io.vertx.core.eventbus.DeliveryOptions options) Like sender(java.lang.String) but specifying delivery options that will be used for configuring the delivery of the message.
String	toString()
EventBus	unregisterCodec(String name) Unregister a message codec.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface io.vertx.axle.core.metrics.Measured

newInstance

Field Detail

__TYPE_ARG

public static final TypeArg<EventBus> __TYPE_ARG

Constructor Detail

EventBus

public EventBus(io.vertx.core.eventbus.EventBus delegate)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getDelegate

public io.vertx.core.eventbus.EventBus getDelegate()

Specified by:

getDelegate in interface Measured

isMetricsEnabled

public boolean isMetricsEnabled()

Whether the metrics are enabled for this measured object

Specified by:

isMetricsEnabled in interface Measured

Returns:

true if metrics are enabled

send

@Deprecated
public <T> CompletionStage<Message<T>> send(String address,
                                                        Object message)

Deprecated.

Like but specifying a replyHandler that will be called if the recipient subsequently replies to the message.

Parameters:

address - the address to send it to

message - the message, may be null

Returns:

a reference to this, so the API can be used fluently

send

@Deprecated
public <T> CompletionStage<Message<T>> send(String address,
                                                        Object message,
                                                        io.vertx.core.eventbus.DeliveryOptions options)

Deprecated.

Like but specifying a replyHandler that will be called if the recipient subsequently replies to the message.

Parameters:

address - the address to send it to

message - the message, may be null

options - delivery options

Returns:

a reference to this, so the API can be used fluently

request

public <T> CompletionStage<Message<T>> request(String address,
                                               Object message)

Sends a message and and specify a replyHandler that will be called if the recipient subsequently replies to the message.

The message will be delivered to at most one of the handlers registered to the address.

Parameters:

address - the address to send it to

message - the message body, may be null

Returns:

a reference to this, so the API can be used fluently

request

public <T> CompletionStage<Message<T>> request(String address,
                                               Object message,
                                               io.vertx.core.eventbus.DeliveryOptions options)

Like but specifying options that can be used to configure the delivery.

Parameters:

address - the address to send it to

message - the message body, may be null

options - delivery options

Returns:

a reference to this, so the API can be used fluently

publish

public EventBus publish(String address,
                        Object message)

Publish a message.

The message will be delivered to all handlers registered to the address.

Parameters:

address - the address to publish it to

message - the message, may be null

Returns:

a reference to this, so the API can be used fluently

publish

public EventBus publish(String address,
                        Object message,
                        io.vertx.core.eventbus.DeliveryOptions options)

Like but specifying options that can be used to configure the delivery.

Parameters:

address - the address to publish it to

message - the message, may be null

options - the delivery options

Returns:

a reference to this, so the API can be used fluently

consumer

public <T> MessageConsumer<T> consumer(String address)

Create a message consumer against the specified address.

The returned consumer is not yet registered at the address, registration will be effective when MessageConsumer.handler(java.util.function.Consumer<io.vertx.axle.core.eventbus.Message<T>>) is called.

Parameters:

address - the address that it will register it at

Returns:

the event bus message consumer

consumer

public <T> MessageConsumer<T> consumer(String address,
                                       Consumer<Message<T>> handler)

Create a consumer and register it against the specified address.

Parameters:

address - the address that will register it at

handler - the handler that will process the received messages

Returns:

the event bus message consumer

localConsumer

public <T> MessageConsumer<T> localConsumer(String address)

Like consumer(java.lang.String) but the address won't be propagated across the cluster.

Parameters:

address - the address to register it at

Returns:

the event bus message consumer

localConsumer

public <T> MessageConsumer<T> localConsumer(String address,
                                            Consumer<Message<T>> handler)

Like consumer(java.lang.String) but the address won't be propagated across the cluster.

Parameters:

address - the address that will register it at

handler - the handler that will process the received messages

Returns:

the event bus message consumer

sender

public <T> MessageProducer<T> sender(String address)

Create a message sender against the specified address.

The returned sender will invoke the method when the stream WriteStream.write(T) method is called with the sender address and the provided data.

Parameters:

address - the address to send it to

Returns:

The sender

sender

public <T> MessageProducer<T> sender(String address,
                                     io.vertx.core.eventbus.DeliveryOptions options)

Like sender(java.lang.String) but specifying delivery options that will be used for configuring the delivery of the message.

Parameters:

address - the address to send it to

options - the delivery options

Returns:

The sender

publisher

public <T> MessageProducer<T> publisher(String address)

Create a message publisher against the specified address.

The returned publisher will invoke the method when the stream WriteStream.write(T) method is called with the publisher address and the provided data.

Parameters:

address - The address to publish it to

Returns:

The publisher

publisher

public <T> MessageProducer<T> publisher(String address,
                                        io.vertx.core.eventbus.DeliveryOptions options)

Like publisher(java.lang.String) but specifying delivery options that will be used for configuring the delivery of the message.

Parameters:

address - the address to publish it to

options - the delivery options

Returns:

The publisher

addOutboundInterceptor

public <T> EventBus addOutboundInterceptor(Consumer<DeliveryContext<T>> interceptor)

Add an interceptor that will be called whenever a message is sent from Vert.x

Parameters:

interceptor - the interceptor

Returns:

a reference to this, so the API can be used fluently

removeOutboundInterceptor

public <T> EventBus removeOutboundInterceptor(Consumer<DeliveryContext<T>> interceptor)

Remove an interceptor that was added by addOutboundInterceptor(java.util.function.Consumer<io.vertx.axle.core.eventbus.DeliveryContext<T>>)

Parameters:

interceptor - the interceptor

Returns:

a reference to this, so the API can be used fluently

addInboundInterceptor

public <T> EventBus addInboundInterceptor(Consumer<DeliveryContext<T>> interceptor)

Add an interceptor that will be called whenever a message is received by Vert.x

Parameters:

interceptor - the interceptor

Returns:

a reference to this, so the API can be used fluently

removeInboundInterceptor

public <T> EventBus removeInboundInterceptor(Consumer<DeliveryContext<T>> interceptor)

Remove an interceptor that was added by addInboundInterceptor(java.util.function.Consumer<io.vertx.axle.core.eventbus.DeliveryContext<T>>)

Parameters:

interceptor - the interceptor

Returns:

a reference to this, so the API can be used fluently

registerCodec

public EventBus registerCodec(io.vertx.core.eventbus.MessageCodec codec)

Register a message codec.

You can register a message codec if you want to send any non standard message across the event bus. E.g. you might want to send POJOs directly across the event bus.

To use a message codec for a send, you should specify it in the delivery options.

Parameters:

codec - the message codec to register

Returns:

a reference to this, so the API can be used fluently

unregisterCodec

public EventBus unregisterCodec(String name)

Unregister a message codec.

Parameters:

name - the name of the codec

Returns:

a reference to this, so the API can be used fluently

newInstance

public static EventBus newInstance(io.vertx.core.eventbus.EventBus arg)