io.micronaut.http.client.netty

Class DefaultHttpClient

java.lang.Object

io.micronaut.http.client.netty.DefaultHttpClient

All Implemented Interfaces:

LifeCycle<HttpClient>, HttpClient, ProxyHttpClient, SseClient, StreamingHttpClient, WebSocketClient, Closeable, AutoCloseable

@Internal
public class DefaultHttpClient
extends Object
implements WebSocketClient, HttpClient, StreamingHttpClient, SseClient, ProxyHttpClient, Closeable, AutoCloseable

Default implementation of the HttpClient interface based on Netty.

Since:

1.0

Author:

Graeme Rocher

Field Summary

Fields

Modifier and Type	Field and Description
protected ByteBufferFactory<io.netty.buffer.ByteBufAllocator,io.netty.buffer.ByteBuf>	byteBufferFactory
protected MediaTypeCodecRegistry	mediaTypeCodecRegistry

Fields inherited from interface io.micronaut.websocket.WebSocketClient

SCHEME_WS, SCHEME_WSS

Fields inherited from interface io.micronaut.http.client.HttpClient

DEFAULT_ERROR_TYPE

Constructor Summary

Constructors

Constructor and Description
DefaultHttpClient()
DefaultHttpClient(LoadBalancer loadBalancer, HttpClientConfiguration configuration, List<InvocationInstrumenterFactory> invocationInstrumenterFactories)
DefaultHttpClient(LoadBalancer loadBalancer, HttpClientConfiguration configuration, String contextPath, ThreadFactory threadFactory, NettyClientSslBuilder nettyClientSslBuilder, MediaTypeCodecRegistry codecRegistry, AnnotationMetadataResolver annotationMetadataResolver, List<InvocationInstrumenterFactory> invocationInstrumenterFactories, HttpClientFilter... filters) Construct a client for the given arguments.
DefaultHttpClient(LoadBalancer loadBalancer, HttpVersion explicitHttpVersion, HttpClientConfiguration configuration, String contextPath, HttpClientFilterResolver<ClientFilterResolutionContext> filterResolver, List<HttpFilterResolver.FilterEntry<HttpClientFilter>> clientFilterEntries, ThreadFactory threadFactory, NettyClientSslBuilder nettyClientSslBuilder, MediaTypeCodecRegistry codecRegistry, WebSocketBeanRegistry webSocketBeanRegistry, RequestBinderRegistry requestBinderRegistry, io.netty.channel.EventLoopGroup eventLoopGroup, io.netty.channel.ChannelFactory socketChannelFactory, Collection<ChannelPipelineListener> pipelineListeners, NettyClientCustomizer clientCustomizer, List<InvocationInstrumenterFactory> invocationInstrumenterFactories, String informationalServiceId) Construct a client for the given arguments.
DefaultHttpClient(URI uri)
DefaultHttpClient(URI uri, HttpClientConfiguration configuration)

Method Summary

Modifier and Type	Method and Description
protected io.micronaut.http.client.netty.DefaultHttpClient.NettyRequestWriter	buildNettyRequest(MutableHttpRequest request, URI requestURI, MediaType requestContentType, boolean permitsBody, Argument<?> bodyType, Consumer<? super Throwable> onError)
void	close() Delegates to LifeCycle.stop().
<T extends AutoCloseable> Publisher<T>	connect(Class<T> clientEndpointType, Map<String,Object> parameters) Connect the given client endpoint type.
<T extends AutoCloseable> Publisher<T>	connect(Class<T> clientEndpointType, MutableHttpRequest<?> request) Connect the given client endpoint type to the URI over WebSocket.
<I> Publisher<ByteBuffer<?>>	dataStream(HttpRequest<I> request) Request a stream of data where each emitted item is a ByteBuffer instance.
<I> Publisher<ByteBuffer<?>>	dataStream(HttpRequest<I> request, Argument<?> errorType) Request a stream of data where each emitted item is a ByteBuffer instance.
<I> Publisher<Event<ByteBuffer<?>>>	eventStream(HttpRequest<I> request) Perform an HTTP request and receive data as a stream of SSE Event objects as they become available without blocking.
<I,B> Publisher<Event<B>>	eventStream(HttpRequest<I> request, Argument<B> eventType) Perform an HTTP request and receive data as a stream of SSE Event objects as they become available without blocking.
<I,B> Publisher<Event<B>>	eventStream(HttpRequest<I> request, Argument<B> eventType, Argument<?> errorType) Perform an HTTP request and receive data as a stream of SSE Event objects as they become available without blocking.
<I,O,E> Publisher<HttpResponse<O>>	exchange(HttpRequest<I> request, Argument<O> bodyType, Argument<E> errorType) Perform an HTTP request for the given request object emitting the full HTTP response from returned Publisher and converting the response body to the specified type.
<I> Publisher<HttpResponse<ByteBuffer<?>>>	exchangeStream(HttpRequest<I> request) Requests a stream data where each emitted item is a ByteBuffer wrapped in the HttpResponse object (which remains the same for each emitted item).
<I> Publisher<HttpResponse<ByteBuffer<?>>>	exchangeStream(HttpRequest<I> request, Argument<?> errorType) Requests a stream data where each emitted item is a ByteBuffer wrapped in the HttpResponse object (which remains the same for each emitted item).
HttpClientConfiguration	getConfiguration()
protected Object	getLoadBalancerDiscriminator()
org.slf4j.Logger	getLog()
MediaTypeCodecRegistry	getMediaTypeCodecRegistry()
boolean	isRunning()
<I> Publisher<Map<String,Object>>	jsonStream(HttpRequest<I> request) Perform an HTTP request and receive data as a stream of JSON objects as they become available without blocking.
<I,O> Publisher<O>	jsonStream(HttpRequest<I> request, Argument<O> type) Perform an HTTP request and receive data as a stream of JSON objects as they become available without blocking.
<I,O> Publisher<O>	jsonStream(HttpRequest<I> request, Argument<O> type, Argument<?> errorType) Perform an HTTP request and receive data as a stream of JSON objects as they become available without blocking.
<I,O> Publisher<O>	jsonStream(HttpRequest<I> request, Class<O> type) Perform an HTTP request and receive data as a stream of JSON objects as they become available without blocking.
protected URI	prependContextPath(URI requestURI)
Publisher<MutableHttpResponse<?>>	proxy(HttpRequest<?> request) Proxy the given request and emit the response.
Publisher<MutableHttpResponse<?>>	proxy(HttpRequest<?> request, ProxyRequestOptions options) Proxy the given request and emit the response.
protected <I> Publisher<URI>	resolveRedirectURI(HttpRequest<?> parentRequest, HttpRequest<I> request)
protected <I> Publisher<URI>	resolveRequestURI(HttpRequest<I> request)
protected <I> Publisher<URI>	resolveRequestURI(HttpRequest<I> request, boolean includeContextPath)
<I,O,E> Publisher<O>	retrieve(HttpRequest<I> request, Argument<O> bodyType, Argument<E> errorType) Perform an HTTP request for the given request object emitting the full HTTP response from returned Publisher and converting the response body to the specified type.
void	setMediaTypeCodecRegistry(MediaTypeCodecRegistry mediaTypeCodecRegistry) Sets the MediaTypeCodecRegistry used by this client.
HttpClient	start() Starts the lifecyle component.
HttpClient	stop() Stops the life cycle component.
BlockingHttpClient	toBlocking()

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.micronaut.websocket.WebSocketClient

connect, connect, create, create, create, create

Methods inherited from interface io.micronaut.http.client.StreamingHttpClient

create, create

Methods inherited from interface io.micronaut.http.client.HttpClient

exchange, exchange, exchange, exchange, exchange, refresh, retrieve, retrieve, retrieve, retrieve

Methods inherited from interface io.micronaut.http.client.sse.SseClient

create, create, eventStream, eventStream, eventStream

Methods inherited from interface io.micronaut.http.client.ProxyHttpClient

create, create

Field Detail

mediaTypeCodecRegistry

protected MediaTypeCodecRegistry mediaTypeCodecRegistry

byteBufferFactory

protected ByteBufferFactory<io.netty.buffer.ByteBufAllocator,io.netty.buffer.ByteBuf> byteBufferFactory

Constructor Detail

DefaultHttpClient

public DefaultHttpClient(@Nullable
                         LoadBalancer loadBalancer,
                         @NonNull
                         HttpClientConfiguration configuration,
                         @Nullable
                         String contextPath,
                         @Nullable
                         ThreadFactory threadFactory,
                         NettyClientSslBuilder nettyClientSslBuilder,
                         MediaTypeCodecRegistry codecRegistry,
                         @Nullable
                         AnnotationMetadataResolver annotationMetadataResolver,
                         List<InvocationInstrumenterFactory> invocationInstrumenterFactories,
                         HttpClientFilter... filters)

Construct a client for the given arguments.

Parameters:

loadBalancer - The LoadBalancer to use for selecting servers

configuration - The HttpClientConfiguration object

contextPath - The base URI to prepend to request uris

threadFactory - The thread factory to use for client threads

nettyClientSslBuilder - The SSL builder

codecRegistry - The MediaTypeCodecRegistry to use for encoding and decoding objects

annotationMetadataResolver - The annotation metadata resolver

invocationInstrumenterFactories - The invocation instrumeter factories to instrument netty handlers execution with

filters - The filters to use

DefaultHttpClient

public DefaultHttpClient(@Nullable
                         LoadBalancer loadBalancer,
                         @Nullable
                         HttpVersion explicitHttpVersion,
                         @NonNull
                         HttpClientConfiguration configuration,
                         @Nullable
                         String contextPath,
                         @NonNull
                         HttpClientFilterResolver<ClientFilterResolutionContext> filterResolver,
                         List<HttpFilterResolver.FilterEntry<HttpClientFilter>> clientFilterEntries,
                         @Nullable
                         ThreadFactory threadFactory,
                         @NonNull
                         NettyClientSslBuilder nettyClientSslBuilder,
                         @NonNull
                         MediaTypeCodecRegistry codecRegistry,
                         @NonNull
                         WebSocketBeanRegistry webSocketBeanRegistry,
                         @NonNull
                         RequestBinderRegistry requestBinderRegistry,
                         @Nullable
                         io.netty.channel.EventLoopGroup eventLoopGroup,
                         @NonNull
                         io.netty.channel.ChannelFactory socketChannelFactory,
                         Collection<ChannelPipelineListener> pipelineListeners,
                         NettyClientCustomizer clientCustomizer,
                         List<InvocationInstrumenterFactory> invocationInstrumenterFactories,
                         @Nullable
                         String informationalServiceId)

Construct a client for the given arguments.

Parameters:

loadBalancer - The LoadBalancer to use for selecting servers

explicitHttpVersion - The HTTP version to use. Can be null and defaults to HttpVersion.HTTP_1_1

configuration - The HttpClientConfiguration object

contextPath - The base URI to prepend to request uris

filterResolver - The http client filter resolver

clientFilterEntries - The client filter entries

threadFactory - The thread factory to use for client threads

nettyClientSslBuilder - The SSL builder

codecRegistry - The MediaTypeCodecRegistry to use for encoding and decoding objects

webSocketBeanRegistry - The websocket bean registry

requestBinderRegistry - The request binder registry

eventLoopGroup - The event loop group to use

socketChannelFactory - The socket channel factory

pipelineListeners - The listeners to call for pipeline customization

clientCustomizer - The pipeline customizer

invocationInstrumenterFactories - The invocation instrumeter factories to instrument netty handlers execution with

informationalServiceId - Optional service ID that will be passed to exceptions created by this client

DefaultHttpClient

public DefaultHttpClient(@Nullable
                         URI uri)

Parameters:

uri - The URL

DefaultHttpClient

public DefaultHttpClient()

DefaultHttpClient

public DefaultHttpClient(@Nullable
                         URI uri,
                         @NonNull
                         HttpClientConfiguration configuration)

Parameters:

uri - The URI

configuration - The HttpClientConfiguration object

DefaultHttpClient

public DefaultHttpClient(@Nullable
                         LoadBalancer loadBalancer,
                         HttpClientConfiguration configuration,
                         List<InvocationInstrumenterFactory> invocationInstrumenterFactories)

Parameters:

loadBalancer - The LoadBalancer to use for selecting servers

configuration - The HttpClientConfiguration object

invocationInstrumenterFactories - The invocation instrumeter factories to instrument netty handlers execution with

Method Detail

getConfiguration

public HttpClientConfiguration getConfiguration()

Returns:

The configuration used by this client

getLog

public org.slf4j.Logger getLog()

Returns:

The client-specific logger name

start

public HttpClient start()

Description copied from interface: LifeCycle

Starts the lifecyle component.

Specified by:

start in interface LifeCycle<HttpClient>

Returns:

This lifecycle component

isRunning

public boolean isRunning()

Specified by:

isRunning in interface LifeCycle<HttpClient>

Returns:

Whether the component is running

stop

public HttpClient stop()

Description copied from interface: LifeCycle

Stops the life cycle component.

Specified by:

stop in interface LifeCycle<HttpClient>

Returns:

This lifecycle component

getMediaTypeCodecRegistry

public MediaTypeCodecRegistry getMediaTypeCodecRegistry()

Returns:

The MediaTypeCodecRegistry used by this client

setMediaTypeCodecRegistry

public void setMediaTypeCodecRegistry(MediaTypeCodecRegistry mediaTypeCodecRegistry)

Sets the MediaTypeCodecRegistry used by this client.

Parameters:

mediaTypeCodecRegistry - The registry to use. Should not be null

toBlocking

public BlockingHttpClient toBlocking()

Specified by:

toBlocking in interface HttpClient

Returns:

A blocking HTTP client suitable for testing and non-production scenarios.

eventStream

public <I> Publisher<Event<ByteBuffer<?>>> eventStream(@NonNull
                                                       HttpRequest<I> request)

Description copied from interface: SseClient

Perform an HTTP request and receive data as a stream of SSE Event objects as they become available without blocking.

The downstream Subscriber can regulate demand via the subscription

Specified by:

eventStream in interface SseClient

Type Parameters:

I - The request body type

Parameters:

request - The HttpRequest to execute

Returns:

A Publisher that emits an Event with the data represented as a ByteBuffer

eventStream

public <I,B> Publisher<Event<B>> eventStream(@NonNull
                                             HttpRequest<I> request,
                                             @NonNull
                                             Argument<B> eventType)

Description copied from interface: SseClient

Perform an HTTP request and receive data as a stream of SSE Event objects as they become available without blocking.

The downstream Subscriber can regulate demand via the subscription

Specified by:

eventStream in interface SseClient

Type Parameters:

I - The request body type

B - The event body type

Parameters:

request - The HttpRequest to execute

eventType - The event data type

Returns:

A Publisher that emits an Event with the data represented by the eventType argument

eventStream

public <I,B> Publisher<Event<B>> eventStream(@NonNull
                                             HttpRequest<I> request,
                                             @NonNull
                                             Argument<B> eventType,
                                             @NonNull
                                             Argument<?> errorType)

Description copied from interface: SseClient

Perform an HTTP request and receive data as a stream of SSE Event objects as they become available without blocking.

The downstream Subscriber can regulate demand via the subscription

Specified by:

eventStream in interface SseClient

Type Parameters:

I - The request body type

B - The event body type

Parameters:

request - The HttpRequest to execute

eventType - The event data type

errorType - The type that the response body should be coerced into if the server responds with an error

Returns:

A Publisher that emits an Event with the data represented by the eventType argument

dataStream

public <I> Publisher<ByteBuffer<?>> dataStream(@NonNull
                                               HttpRequest<I> request)

Description copied from interface: StreamingHttpClient

Request a stream of data where each emitted item is a ByteBuffer instance.

Specified by:

dataStream in interface StreamingHttpClient

Type Parameters:

I - The request body type

Parameters:

request - The request

Returns:

A Publisher that emits a stream of ByteBuffer instances

dataStream

public <I> Publisher<ByteBuffer<?>> dataStream(@NonNull
                                               HttpRequest<I> request,
                                               @NonNull
                                               Argument<?> errorType)

Description copied from interface: StreamingHttpClient

Request a stream of data where each emitted item is a ByteBuffer instance.

Specified by:

dataStream in interface StreamingHttpClient

Type Parameters:

I - The request body type

Parameters:

request - The request

errorType - The type that the response body should be coerced into if the server responds with an error

Returns:

A Publisher that emits a stream of ByteBuffer instances

exchangeStream

public <I> Publisher<HttpResponse<ByteBuffer<?>>> exchangeStream(@NonNull
                                                                 HttpRequest<I> request)

Description copied from interface: StreamingHttpClient

Requests a stream data where each emitted item is a ByteBuffer wrapped in the HttpResponse object (which remains the same for each emitted item).

Specified by:

exchangeStream in interface StreamingHttpClient

Type Parameters:

I - The request body type

Parameters:

request - The HttpRequest

Returns:

A Publisher that emits a stream of ByteBuffer instances wrapped by a HttpResponse

exchangeStream

public <I> Publisher<HttpResponse<ByteBuffer<?>>> exchangeStream(@NonNull
                                                                 HttpRequest<I> request,
                                                                 @NonNull
                                                                 Argument<?> errorType)

Description copied from interface: StreamingHttpClient

Requests a stream data where each emitted item is a ByteBuffer wrapped in the HttpResponse object (which remains the same for each emitted item).

Specified by:

exchangeStream in interface StreamingHttpClient

Type Parameters:

I - The request body type

Parameters:

request - The HttpRequest

errorType - The type that the response body should be coerced into if the server responds with an error

Returns:

A Publisher that emits a stream of ByteBuffer instances wrapped by a HttpResponse

jsonStream

public <I,O> Publisher<O> jsonStream(@NonNull
                                     HttpRequest<I> request,
                                     @NonNull
                                     Argument<O> type)

Description copied from interface: StreamingHttpClient

Perform an HTTP request and receive data as a stream of JSON objects as they become available without blocking.

The downstream Subscriber can regulate demand via the subscription. Incoming data is buffered.

Specified by:

jsonStream in interface StreamingHttpClient

Type Parameters:

I - The request body type

O - The response type

Parameters:

request - The HttpRequest to execute

type - The type of object to convert the JSON into

Returns:

A Publisher that emits the full HttpResponse object

jsonStream

public <I,O> Publisher<O> jsonStream(@NonNull
                                     HttpRequest<I> request,
                                     @NonNull
                                     Argument<O> type,
                                     @NonNull
                                     Argument<?> errorType)

Description copied from interface: StreamingHttpClient

Perform an HTTP request and receive data as a stream of JSON objects as they become available without blocking.

The downstream Subscriber can regulate demand via the subscription. Incoming data is buffered.

Specified by:

jsonStream in interface StreamingHttpClient

Type Parameters:

I - The request body type

O - The response type

Parameters:

request - The HttpRequest to execute

type - The type of object to convert the JSON into

errorType - The type that the response body should be coerced into if the server responds with an error

Returns:

A Publisher that emits the full HttpResponse object

jsonStream

public <I> Publisher<Map<String,Object>> jsonStream(@NonNull
                                                    HttpRequest<I> request)

Description copied from interface: StreamingHttpClient

Perform an HTTP request and receive data as a stream of JSON objects as they become available without blocking.

The downstream Subscriber can regulate demand via the subscription

Specified by:

jsonStream in interface StreamingHttpClient

Type Parameters:

I - The request body type

Parameters:

request - The HttpRequest to execute

Returns:

A Publisher that emits the full HttpResponse object

jsonStream

public <I,O> Publisher<O> jsonStream(@NonNull
                                     HttpRequest<I> request,
                                     @NonNull
                                     Class<O> type)

Description copied from interface: StreamingHttpClient

Perform an HTTP request and receive data as a stream of JSON objects as they become available without blocking.

The downstream Subscriber can regulate demand via the subscription

Specified by:

jsonStream in interface StreamingHttpClient

Type Parameters:

I - The request body type

O - The response type

Parameters:

request - The HttpRequest to execute

type - The type of object to convert the JSON into

Returns:

A Publisher that emits the full HttpResponse object

exchange

public <I,O,E> Publisher<HttpResponse<O>> exchange(@NonNull
                                                   HttpRequest<I> request,
                                                   @NonNull
                                                   Argument<O> bodyType,
                                                   @NonNull
                                                   Argument<E> errorType)

Description copied from interface: HttpClient

Perform an HTTP request for the given request object emitting the full HTTP response from returned Publisher and converting the response body to the specified type.

This method will send a Content-Length header and except a content length header the response and is designed for simple non-streaming exchanges of data

By default the exchange Content-Type is application/json, unless otherwise specified in the passed HttpRequest

Specified by:

exchange in interface HttpClient

Type Parameters:

I - The request body type

O - The response body type

E - The error type

Parameters:

request - The HttpRequest to execute

bodyType - The body type

errorType - The error type

Returns:

A Publisher that emits the full HttpResponse object

retrieve

public <I,O,E> Publisher<O> retrieve(HttpRequest<I> request,
                                     Argument<O> bodyType,
                                     Argument<E> errorType)

Description copied from interface: HttpClient

Perform an HTTP request for the given request object emitting the full HTTP response from returned Publisher and converting the response body to the specified type.

Specified by:

retrieve in interface HttpClient

Type Parameters:

I - The request body type

O - The response body type

E - The error type

Parameters:

request - The HttpRequest to execute

bodyType - The body type

errorType - The error type

Returns:

A Publisher that emits a result of the given type

connect

public <T extends AutoCloseable> Publisher<T> connect(Class<T> clientEndpointType,
                                                      MutableHttpRequest<?> request)

Description copied from interface: WebSocketClient

Connect the given client endpoint type to the URI over WebSocket.

Specified by:

connect in interface WebSocketClient

Type Parameters:

T - The generic type

Parameters:

clientEndpointType - The endpoint type. Should be a class annotated with ClientWebSocket

request - The original request to establish the connection

Returns:

A Publisher that emits the ClientWebSocket instance

connect

public <T extends AutoCloseable> Publisher<T> connect(Class<T> clientEndpointType,
                                                      Map<String,Object> parameters)

Description copied from interface: WebSocketClient

Connect the given client endpoint type. Unlike WebSocketClient.connect(Class, URI) this method will the value declared within the ClientWebSocket as the URI and expand the URI with the given parameters.

Specified by:

connect in interface WebSocketClient

Type Parameters:

T - The generic type

Parameters:

clientEndpointType - The endpoint type. Should be a class annotated with ClientWebSocket

parameters - The URI parameters for the endpoint

Returns:

A Publisher that emits the ClientWebSocket instance

close

public void close()

Description copied from interface: LifeCycle

Delegates to LifeCycle.stop().

Specified by:

close in interface LifeCycle<HttpClient>

Specified by:

close in interface WebSocketClient

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

proxy

public Publisher<MutableHttpResponse<?>> proxy(@NonNull
                                               HttpRequest<?> request)

Description copied from interface: ProxyHttpClient

Proxy the given request and emit the response. This method expects the full absolute URL to be included in the request. If a relative URL is specified then the method will try to resolve the URI for the current server otherwise an exception will be thrown.

Specified by:

proxy in interface ProxyHttpClient

Parameters:

request - The request

Returns:

A publisher that emits the response.

proxy

public Publisher<MutableHttpResponse<?>> proxy(@NonNull
                                               HttpRequest<?> request,
                                               @NonNull
                                               ProxyRequestOptions options)

Description copied from interface: ProxyHttpClient

Proxy the given request and emit the response. This method expects the full absolute URL to be included in the request. If a relative URL is specified then the method will try to resolve the URI for the current server otherwise an exception will be thrown.

Specified by:

proxy in interface ProxyHttpClient

Parameters:

request - The request

options - Further options for the proxy request

Returns:

A publisher that emits the response.

resolveRequestURI

protected <I> Publisher<URI> resolveRequestURI(HttpRequest<I> request)

Type Parameters:

I - The input type

Parameters:

request - The request

Returns:

A Publisher with the resolved URI

resolveRequestURI

protected <I> Publisher<URI> resolveRequestURI(HttpRequest<I> request,
                                               boolean includeContextPath)

Type Parameters:

I - The input type

Parameters:

request - The request

includeContextPath - Whether to prepend the client context path

Returns:

A Publisher with the resolved URI

resolveRedirectURI

protected <I> Publisher<URI> resolveRedirectURI(HttpRequest<?> parentRequest,
                                                HttpRequest<I> request)

Type Parameters:

I - The input type

Parameters:

parentRequest - The parent request

request - The redirect location request

Returns:

A Publisher with the resolved URI

prependContextPath

protected URI prependContextPath(URI requestURI)

Parameters:

requestURI - The request URI

Returns:

A URI that is prepended with the contextPath, if set

getLoadBalancerDiscriminator

protected Object getLoadBalancerDiscriminator()

Returns:

The discriminator to use when selecting a server for the purposes of load balancing (defaults to null)

buildNettyRequest

protected io.micronaut.http.client.netty.DefaultHttpClient.NettyRequestWriter buildNettyRequest(MutableHttpRequest request,
                                                                                                URI requestURI,
                                                                                                MediaType requestContentType,
                                                                                                boolean permitsBody,
                                                                                                @Nullable
                                                                                                Argument<?> bodyType,
                                                                                                Consumer<? super Throwable> onError)
                                                                                         throws io.netty.handler.codec.http.multipart.HttpPostRequestEncoder.ErrorDataEncoderException

Parameters:

request - The request

requestURI - The URI of the request

requestContentType - The request content type

permitsBody - Whether permits body

bodyType - The body type

onError - Called when the body publisher encounters an error

Returns:

A NettyRequestWriter

Throws:

HttpPostRequestEncoder.ErrorDataEncoderException - if there is an encoder exception