Package com.linecorp.armeria.client

Class FutureTransformingRequestPreparation<T>

java.lang.Object

com.linecorp.armeria.client.FutureTransformingRequestPreparation<T>

All Implemented Interfaces:

RequestOptionsSetters, RequestPreparationSetters, HttpMessageSetters, PathAndQueryParamSetters, RequestMethodSetters

@UnstableApi
public final class FutureTransformingRequestPreparation<T>
extends Object

Prepares and executes a new HttpRequest for WebClient, and asynchronously transforms an HttpResponse into a T type object.

Method Summary

Modifier and Type	Method	Description
<U> FutureTransformingRequestPreparation<U>	as(ResponseAs<? super T,? extends U> responseAs)	Sets a ResponseAs that converts the T type object into another.
<V> FutureTransformingRequestPreparation<T>	attr(io.netty.util.AttributeKey<V> key, V value)	Associates the specified value with the given AttributeKey in this request.
FutureTransformingRequestPreparation<T>	content(MediaType contentType, byte[] content)	Sets the content for this message.
FutureTransformingRequestPreparation<T>	content(MediaType contentType, HttpData content)	Sets the content for this message.
FutureTransformingRequestPreparation<T>	content(MediaType contentType, CharSequence content)	Sets the content for this message.
FutureTransformingRequestPreparation<T>	content(MediaType contentType, String content)	Sets the content for this message.
FutureTransformingRequestPreparation<T>	content(MediaType contentType, String format, Object... content)	Sets the content for this message.
FutureTransformingRequestPreparation<T>	content(MediaType contentType, org.reactivestreams.Publisher<? extends HttpData> content)	Sets the Publisher for this message.
FutureTransformingRequestPreparation<T>	content(String content)	Sets the content as UTF-8 for this message.
FutureTransformingRequestPreparation<T>	content(String format, Object... content)	Sets the content as UTF-8 for this message.
FutureTransformingRequestPreparation<T>	content(org.reactivestreams.Publisher<? extends HttpData> content)	Sets the Publisher for this message.
FutureTransformingRequestPreparation<T>	contentJson(Object content)	Sets the content for this message.
FutureTransformingRequestPreparation<T>	cookie(Cookie cookie)	Sets a cookie for this message.
FutureTransformingRequestPreparation<T>	cookies(Iterable<? extends Cookie> cookies)	Sets multiple cookies for this message.
FutureTransformingRequestPreparation<T>	delete(String path)	Sets DELETE method and path.
FutureTransformingRequestPreparation<T>	disablePathParams()	Disables path parameters substitution.
FutureTransformingRequestPreparation<T>	exchangeType(ExchangeType exchangeType)	Sets the ExchangeType that determines whether to stream an HttpRequest or HttpResponse.
CompletableFuture<T>	execute()
FutureTransformingRequestPreparation<T>	get(String path)	Sets GET method and path.
FutureTransformingRequestPreparation<T>	head(String path)	Sets HEAD method and path.
FutureTransformingRequestPreparation<T>	header(CharSequence name, Object value)	Adds a header for this message.
FutureTransformingRequestPreparation<T>	headers(Iterable<? extends Map.Entry<? extends CharSequence,String>> headers)	Adds multiple headers for this message.
FutureTransformingRequestPreparation<T>	mapError(Function<? super Throwable,? extends @Nullable Throwable> function)	Transforms a Throwable raised while receiving the response by applying the specified Function.
FutureTransformingRequestPreparation<T>	maxResponseLength(long maxResponseLength)	Sets the maximum allowed length of a server response in bytes.
FutureTransformingRequestPreparation<T>	method(HttpMethod method)	Sets the method for this request.
FutureTransformingRequestPreparation<T>	options(String path)	Sets OPTIONS method and path.
FutureTransformingRequestPreparation<T>	patch(String path)	Sets PATCH method and path.
FutureTransformingRequestPreparation<T>	path(String path)	Sets the path for this request.
FutureTransformingRequestPreparation<T>	pathParam(String name, Object value)	Sets a path param for this message.
FutureTransformingRequestPreparation<T>	pathParams(Map<String,?> pathParams)	Sets multiple path params for this message.
FutureTransformingRequestPreparation<T>	post(String path)	Sets POST method and path.
FutureTransformingRequestPreparation<T>	put(String path)	Sets PUT method and path.
FutureTransformingRequestPreparation<T>	queryParam(String name, Object value)	Adds a query param for this message.
FutureTransformingRequestPreparation<T>	queryParams(Iterable<? extends Map.Entry<? extends String,String>> queryParams)	Adds multiple query params for this message.
FutureTransformingRequestPreparation<T>	recover(Function<? super Throwable,? extends @Nullable T> function)	Recovers a failed HttpResponse by switching to a returned fallback object returned by the function.
FutureTransformingRequestPreparation<T>	requestAutoAbortDelay(Duration delay)	Sets the amount of time to wait before aborting an HttpRequest when its corresponding HttpResponse is complete.
FutureTransformingRequestPreparation<T>	requestAutoAbortDelayMillis(long delayMillis)	Sets the amount of time in millis to wait before aborting an HttpRequest when its corresponding HttpResponse is complete.
FutureTransformingRequestPreparation<T>	requestOptions(RequestOptions requestOptions)	Sets the specified RequestOptions that could overwrite the previously configured values such as RequestOptionsSetters.responseTimeout(Duration), RequestOptionsSetters.writeTimeout(Duration), RequestOptionsSetters.maxResponseLength(long) and RequestOptionsSetters.attr(AttributeKey, Object).
FutureTransformingRequestPreparation<T>	responseTimeout(Duration responseTimeout)	Schedules the response timeout that is triggered when the Response is not fully received within the specified Duration since the Response started or Request was fully sent.
FutureTransformingRequestPreparation<T>	responseTimeoutMillis(long responseTimeoutMillis)	Schedules the response timeout that is triggered when the Response is not fully received within the specified responseTimeoutMillis since the Response started or Request was fully sent.
FutureTransformingRequestPreparation<T>	trace(String path)	Sets TRACE method and path.
FutureTransformingRequestPreparation<T>	trailer(CharSequence name, Object value)	Adds an HTTP trailer for this message.
FutureTransformingRequestPreparation<T>	trailers(Iterable<? extends Map.Entry<? extends CharSequence,String>> trailers)	Adds HTTP trailers for this message.
FutureTransformingRequestPreparation<T>	writeTimeout(Duration writeTimeout)	Sets the amount of time allowed until the initial write attempt of the current Request succeeds.
FutureTransformingRequestPreparation<T>	writeTimeoutMillis(long writeTimeoutMillis)	Sets the amount of time allowed until the initial write attempt of the current Request succeeds.

Methods inherited from class java.lang.Object

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

Method Details

execute

public CompletableFuture<T> execute()

as

@UnstableApi
public <U> FutureTransformingRequestPreparation<U> as(ResponseAs<? super T,? extends U> responseAs)

Sets a ResponseAs that converts the T type object into another.

recover

@UnstableApi
public FutureTransformingRequestPreparation<T> recover(Function<? super Throwable,? extends @Nullable T> function)

Recovers a failed HttpResponse by switching to a returned fallback object returned by the function. If a null value is returned, the cause will not be recovered.

mapError

@UnstableApi
public FutureTransformingRequestPreparation<T> mapError(Function<? super Throwable,? extends @Nullable Throwable> function)

Transforms a Throwable raised while receiving the response by applying the specified Function. If a null value is returned, the original cause will be used as is.

requestOptions

public FutureTransformingRequestPreparation<T> requestOptions(RequestOptions requestOptions)

Description copied from interface: RequestPreparationSetters

Sets the specified RequestOptions that could overwrite the previously configured values such as RequestOptionsSetters.responseTimeout(Duration), RequestOptionsSetters.writeTimeout(Duration), RequestOptionsSetters.maxResponseLength(long) and RequestOptionsSetters.attr(AttributeKey, Object).

Specified by:

requestOptions in interface RequestPreparationSetters

get

public FutureTransformingRequestPreparation<T> get(String path)

Description copied from interface: RequestMethodSetters

Sets GET method and path.

Specified by:

get in interface RequestMethodSetters

post

public FutureTransformingRequestPreparation<T> post(String path)

Description copied from interface: RequestMethodSetters

Sets POST method and path.

Specified by:

post in interface RequestMethodSetters

put

public FutureTransformingRequestPreparation<T> put(String path)

Description copied from interface: RequestMethodSetters

Sets PUT method and path.

Specified by:

put in interface RequestMethodSetters

delete

public FutureTransformingRequestPreparation<T> delete(String path)

Description copied from interface: RequestMethodSetters

Sets DELETE method and path.

Specified by:

delete in interface RequestMethodSetters

patch

public FutureTransformingRequestPreparation<T> patch(String path)

Description copied from interface: RequestMethodSetters

Sets PATCH method and path.

Specified by:

patch in interface RequestMethodSetters

options

public FutureTransformingRequestPreparation<T> options(String path)

Description copied from interface: RequestMethodSetters

Sets OPTIONS method and path.

Specified by:

options in interface RequestMethodSetters

head

public FutureTransformingRequestPreparation<T> head(String path)

Description copied from interface: RequestMethodSetters

Sets HEAD method and path.

Specified by:

head in interface RequestMethodSetters

trace

public FutureTransformingRequestPreparation<T> trace(String path)

Description copied from interface: RequestMethodSetters

Sets TRACE method and path.

Specified by:

trace in interface RequestMethodSetters

method

public FutureTransformingRequestPreparation<T> method(HttpMethod method)

Description copied from interface: RequestMethodSetters

Sets the method for this request.

Specified by:

method in interface RequestMethodSetters

See Also:

• HttpMethod

path

public FutureTransformingRequestPreparation<T> path(String path)

Description copied from interface: RequestMethodSetters

Sets the path for this request.

Specified by:

path in interface RequestMethodSetters

content

public FutureTransformingRequestPreparation<T> content(String content)

Description copied from interface: HttpMessageSetters

Sets the content as UTF-8 for this message.

Specified by:

content in interface HttpMessageSetters

content

public FutureTransformingRequestPreparation<T> content(MediaType contentType,
 CharSequence content)

Description copied from interface: HttpMessageSetters

Sets the content for this message.

Specified by:

content in interface HttpMessageSetters

content

public FutureTransformingRequestPreparation<T> content(MediaType contentType,
 String content)

Description copied from interface: HttpMessageSetters

Sets the content for this message.

Specified by:

content in interface HttpMessageSetters

content

@FormatMethod
public FutureTransformingRequestPreparation<T> content(@FormatString
 String format,
 Object... content)

Description copied from interface: HttpMessageSetters

Sets the content as UTF-8 for this message. The content is formatted by String.format(Locale, String, Object...) with English locale.

Specified by:

content in interface HttpMessageSetters

content

@FormatMethod
public FutureTransformingRequestPreparation<T> content(MediaType contentType,
 @FormatString
 String format,
 Object... content)

Description copied from interface: HttpMessageSetters

Sets the content for this message. The content is formatted by String.format(Locale, String, Object...) with English locale.

Specified by:

content in interface HttpMessageSetters

content

public FutureTransformingRequestPreparation<T> content(MediaType contentType,
 byte[] content)

Description copied from interface: HttpMessageSetters

Sets the content for this message. The content will be wrapped using HttpData.wrap(byte[]), so any changes made to content will be reflected in the request.

Specified by:

content in interface HttpMessageSetters

content

public FutureTransformingRequestPreparation<T> content(MediaType contentType,
 HttpData content)

Description copied from interface: HttpMessageSetters

Sets the content for this message.

Specified by:

content in interface HttpMessageSetters

content

public FutureTransformingRequestPreparation<T> content(org.reactivestreams.Publisher<? extends HttpData> content)

Description copied from interface: HttpMessageSetters

Sets the Publisher for this message.

Specified by:

content in interface HttpMessageSetters

content

public FutureTransformingRequestPreparation<T> content(MediaType contentType,
 org.reactivestreams.Publisher<? extends HttpData> content)

Description copied from interface: HttpMessageSetters

Sets the Publisher for this message.

Specified by:

content in interface HttpMessageSetters

contentJson

public FutureTransformingRequestPreparation<T> contentJson(Object content)

Description copied from interface: HttpMessageSetters

Sets the content for this message. The content is converted into JSON format using the default ObjectMapper.

Specified by:

contentJson in interface HttpMessageSetters

header

public FutureTransformingRequestPreparation<T> header(CharSequence name,
 Object value)

Description copied from interface: HttpMessageSetters

Adds a header for this message.

Specified by:

header in interface HttpMessageSetters

headers

public FutureTransformingRequestPreparation<T> headers(Iterable<? extends Map.Entry<? extends CharSequence,String>> headers)

Description copied from interface: HttpMessageSetters

Adds multiple headers for this message.

Specified by:

headers in interface HttpMessageSetters

See Also:

• HttpHeaders

trailer

public FutureTransformingRequestPreparation<T> trailer(CharSequence name,
 Object value)

Description copied from interface: HttpMessageSetters

Adds an HTTP trailer for this message.

Specified by:

trailer in interface HttpMessageSetters

trailers

public FutureTransformingRequestPreparation<T> trailers(Iterable<? extends Map.Entry<? extends CharSequence,String>> trailers)

Description copied from interface: HttpMessageSetters

Adds HTTP trailers for this message.

Specified by:

trailers in interface HttpMessageSetters

pathParam

public FutureTransformingRequestPreparation<T> pathParam(String name,
 Object value)

Description copied from interface: PathAndQueryParamSetters

Sets a path param for this message.

Specified by:

pathParam in interface PathAndQueryParamSetters

pathParams

public FutureTransformingRequestPreparation<T> pathParams(Map<String,?> pathParams)

Description copied from interface: PathAndQueryParamSetters

Sets multiple path params for this message.

Specified by:

pathParams in interface PathAndQueryParamSetters

disablePathParams

public FutureTransformingRequestPreparation<T> disablePathParams()

Description copied from interface: PathAndQueryParamSetters

Disables path parameters substitution. If path parameter is not disabled and a parameter is specified using {} or :, value is not found, an IllegalStateException is thrown.

Specified by:

disablePathParams in interface PathAndQueryParamSetters

queryParam

public FutureTransformingRequestPreparation<T> queryParam(String name,
 Object value)

Description copied from interface: PathAndQueryParamSetters

Adds a query param for this message.

Specified by:

queryParam in interface PathAndQueryParamSetters

queryParams

public FutureTransformingRequestPreparation<T> queryParams(Iterable<? extends Map.Entry<? extends String,String>> queryParams)

Description copied from interface: PathAndQueryParamSetters

Adds multiple query params for this message.

Specified by:

queryParams in interface PathAndQueryParamSetters

cookie

public FutureTransformingRequestPreparation<T> cookie(Cookie cookie)

Description copied from interface: HttpMessageSetters

Sets a cookie for this message.

Specified by:

cookie in interface HttpMessageSetters

See Also:

• Cookie

cookies

public FutureTransformingRequestPreparation<T> cookies(Iterable<? extends Cookie> cookies)

Description copied from interface: HttpMessageSetters

Sets multiple cookies for this message.

Specified by:

cookies in interface HttpMessageSetters

See Also:

• Cookies

responseTimeout

public FutureTransformingRequestPreparation<T> responseTimeout(Duration responseTimeout)

Description copied from interface: RequestOptionsSetters

Schedules the response timeout that is triggered when the Response is not fully received within the specified Duration since the Response started or Request was fully sent. Duration.ZERO disables the limit.

Specified by:

responseTimeout in interface RequestOptionsSetters

responseTimeoutMillis

public FutureTransformingRequestPreparation<T> responseTimeoutMillis(long responseTimeoutMillis)

Description copied from interface: RequestOptionsSetters

Schedules the response timeout that is triggered when the Response is not fully received within the specified responseTimeoutMillis since the Response started or Request was fully sent. 0 disables the limit.

Specified by:

responseTimeoutMillis in interface RequestOptionsSetters

writeTimeout

public FutureTransformingRequestPreparation<T> writeTimeout(Duration writeTimeout)

Description copied from interface: RequestOptionsSetters

Sets the amount of time allowed until the initial write attempt of the current Request succeeds. Duration.ZERO disables the limit.

Specified by:

writeTimeout in interface RequestOptionsSetters

writeTimeoutMillis

public FutureTransformingRequestPreparation<T> writeTimeoutMillis(long writeTimeoutMillis)

Description copied from interface: RequestOptionsSetters

Sets the amount of time allowed until the initial write attempt of the current Request succeeds. 0 disables the limit.

Specified by:

writeTimeoutMillis in interface RequestOptionsSetters

maxResponseLength

public FutureTransformingRequestPreparation<T> maxResponseLength(long maxResponseLength)

Description copied from interface: RequestOptionsSetters

Sets the maximum allowed length of a server response in bytes. 0 disables the limit.

Specified by:

maxResponseLength in interface RequestOptionsSetters

requestAutoAbortDelay

public FutureTransformingRequestPreparation<T> requestAutoAbortDelay(Duration delay)

Description copied from interface: RequestOptionsSetters

Sets the amount of time to wait before aborting an HttpRequest when its corresponding HttpResponse is complete. This may be useful when you want to send additional data even after the response is complete. Specify Duration.ZERO to abort the HttpRequest immediately. Any negative value will not abort the request automatically. There is no delay by default.

Specified by:

requestAutoAbortDelay in interface RequestOptionsSetters

requestAutoAbortDelayMillis

public FutureTransformingRequestPreparation<T> requestAutoAbortDelayMillis(long delayMillis)

Description copied from interface: RequestOptionsSetters

Sets the amount of time in millis to wait before aborting an HttpRequest when its corresponding HttpResponse is complete. This may be useful when you want to send additional data even after the response is complete. Specify 0 to abort the HttpRequest immediately. Any negative value will not abort the request automatically. There is no delay by default.

Specified by:

requestAutoAbortDelayMillis in interface RequestOptionsSetters

attr

public <V> FutureTransformingRequestPreparation<T> attr(io.netty.util.AttributeKey<V> key,
 @Nullable
 V value)

Description copied from interface: RequestOptionsSetters

Associates the specified value with the given AttributeKey in this request. If this context previously contained a mapping for the AttributeKey, the old value is replaced by the specified value.

Specified by:

attr in interface RequestOptionsSetters

exchangeType

public FutureTransformingRequestPreparation<T> exchangeType(ExchangeType exchangeType)

Description copied from interface: RequestOptionsSetters

Sets the ExchangeType that determines whether to stream an HttpRequest or HttpResponse. Note that an HttpRequest will be aggregated before being written if ExchangeType.UNARY or ExchangeType.RESPONSE_STREAMING is set. If unspecified, the Clients try to infer a proper ExchangeType depending on the content type of a request and a response. Here are examples:

WebClient

 WebClient client = WebClient.of("https://armeria.dev");

 try (ClientRequestContextCaptor captor = Clients.newContextCaptor()) {
     client.prepare()
           .post("/api/v1/items")
           .contentJson(new Item(...)) // A non-streaming request type.
           .asString()                 // A non-streaming response type.
           .execute();
     assert captor.get().exchangeType() == ExchangeType.UNARY;
 }

 try (ClientRequestContextCaptor captor = Clients.newContextCaptor()) {
     client.get("/api/v1/items")   // A non-streaming request type.
           .aggregate();           // A return type is not specified; Assuming that response streaming
                                   // is enabled.
     assert captor.get().exchangeType() == ExchangeType.RESPONSE_STREAMING;
 }

 try (ClientRequestContextCaptor captor = Clients.newContextCaptor()) {
     client.prepare()
           .post("/api/v1/items")
           .content(MediaType.JSON_LINES, StreamMessage.of(...)) // A streaming request type.
           .asFile(Path.get("/path/to/destination"))             // A streaming response type.
           .execute();
     assert captor.get().exchangeType() == ExchangeType.BIDI_STREAMING;
 }
 

BlockingWebClient

Since a request and a response of BlockingWebClient are fully aggregated, ExchangeType.UNARY is only supported.

 try (ClientRequestContextCaptor captor = Clients.newContextCaptor()) {
     AggregatedHttpResponse response = client.blocking().get("/api/v1/items");
     assert captor.get().exchangeType() == ExchangeType.UNARY;
 }
 

gRPC clients

An ExchangeType is automatically inferred from the io.grpc.MethodDescriptor.MethodType.

 try (ClientRequestContextCaptor captor = Clients.newContextCaptor()) {
     Response response = grpcClient.unaryCall(...);
     assert captor.get().exchangeType() == ExchangeType.UNARY;
 }
 

Thrift clients

Thrift protocols do not support streaming. ExchangeType.UNARY is only supported.

Specified by:

exchangeType in interface RequestOptionsSetters