Package software.amazon.awssdk.crt.iot

Class MqttRequestResponseClient

java.lang.Object

software.amazon.awssdk.crt.CrtResource

software.amazon.awssdk.crt.iot.MqttRequestResponseClient

All Implemented Interfaces:

AutoCloseable

public class MqttRequestResponseClient
extends CrtResource

A helper class for AWS service clients that use MQTT as the transport protocol. The class supports orchestrating request-response operations and creating streaming operations. Used by the IoT SDKs to implement higher-level service clients that provide a good user experience. Not intended to be constructed or used directly; the service client will create one during its construction.

Nested Class Summary

Nested classes/interfaces inherited from class software.amazon.awssdk.crt.CrtResource

CrtResource.ResourceInstance

Constructor Summary

Constructors

Constructor	Description
MqttRequestResponseClient(MqttClientConnection client, MqttRequestResponseClientOptions options)	MQTT311-based constructor for request-response service clients
MqttRequestResponseClient(Mqtt5Client client, MqttRequestResponseClientOptions options)	MQTT5-based constructor for request-response service clients

Method Summary

Modifier and Type	Method	Description
void	close()
StreamingOperation	createStream(StreamingOperationOptions options)	Creates a new streaming operation from a set of configuration options.
CompletableFuture<MqttRequestResponse>	submitRequest(RequestResponseOperation request)	Submits a request to the request-response client.

Methods inherited from class software.amazon.awssdk.crt.CrtResource

addRef, addReferenceTo, collectNativeResource, collectNativeResources, decRef, getNativeHandle, getResourceLogDescription, isNull, logNativeResources, logNativeResources, removeReferenceTo, setDescription, waitForNoResources

Methods inherited from class java.lang.Object

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

Constructor Details

MqttRequestResponseClient

public MqttRequestResponseClient(Mqtt5Client client,
 MqttRequestResponseClientOptions options)

MQTT5-based constructor for request-response service clients

Parameters:

client - MQTT5 client that the request-response client should use as transport

options - request-response client configuration options

MqttRequestResponseClient

public MqttRequestResponseClient(MqttClientConnection client,
 MqttRequestResponseClientOptions options)

MQTT311-based constructor for request-response service clients

Parameters:

client - MQTT311 client that the request-response client should use as transport

options - request-response client configuration options

Method Details

submitRequest

public CompletableFuture<MqttRequestResponse> submitRequest(RequestResponseOperation request)

Submits a request to the request-response client.

Parameters:

request - description of the request to perform

Returns:

future that completes with the result of performing the request

createStream

public StreamingOperation createStream(StreamingOperationOptions options)

Creates a new streaming operation from a set of configuration options. A streaming operation provides a mechanism for listening to a specific event stream from an AWS MQTT-based service.

Parameters:

options - configuration options for the streaming operation

Returns:

a new streaming operation instance

close

public void close()

Specified by:

close in interface AutoCloseable

Overrides:

close in class CrtResource