Added DataBufferAllocator property to ReactiveHttpOutputMessage, and use that to pass on to Encoder.encode().

spring-web-reactive/src/main/java/org/springframework/http/ReactiveHttpOutputMessage.java

@@ -22,6 +22,7 @@ import org.reactivestreams.Publisher;
 import reactor.core.publisher.Mono;
 
 import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DataBufferAllocator;
 
 /**
  * A "reactive" HTTP output message that accepts output as a {@link Publisher}.
@@ -48,4 +49,11 @@ public interface ReactiveHttpOutputMessage extends HttpMessage {
 	 */
 	Mono<Void> setBody(Publisher<DataBuffer> body);
 
+	/**
+	 * Returns a {@link DataBufferAllocator} that can be used for creating the body.
+	 * @return a buffer allocator
+	 * @see #setBody(Publisher)
+	 */
+	DataBufferAllocator allocator();
+
 }

spring-web-reactive/src/main/java/org/springframework/http/client/reactive/ReactorClientHttpRequest.java

@@ -61,6 +61,11 @@ public class ReactorClientHttpRequest extends AbstractClientHttpRequest {
 		this.httpClient = httpClient;
 	}
 
+	@Override
+	public DataBufferAllocator allocator() {
+		return this.allocator;
+	}
+
 	@Override
 	public HttpMethod getMethod() {
 		return this.httpMethod;

spring-web-reactive/src/main/java/org/springframework/http/client/reactive/RxNettyClientHttpRequest.java

@@ -17,7 +17,6 @@
 package org.springframework.http.client.reactive;
 
 import java.net.URI;
-import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 
@@ -32,6 +31,7 @@ import reactor.core.publisher.Mono;
 import rx.Observable;
 
 import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DataBufferAllocator;
 import org.springframework.core.io.buffer.NettyDataBufferAllocator;
 import org.springframework.http.HttpCookie;
 import org.springframework.http.HttpHeaders;
@@ -60,6 +60,11 @@ public class RxNettyClientHttpRequest extends AbstractClientHttpRequest {
 		this.allocator = allocator;
 	}
 
+	@Override
+	public DataBufferAllocator allocator() {
+		return this.allocator;
+	}
+
 	/**
 	 * Set the body of the message to the given {@link Publisher}.
 	 *

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/AbstractServerHttpResponse.java

@@ -13,17 +13,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import java.util.ArrayList;
 import java.util.List;
-import java.util.concurrent.atomic.AtomicReference;
+import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Supplier;
 
 import org.reactivestreams.Publisher;
 import reactor.core.publisher.Mono;
 
 import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DataBufferAllocator;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.ResponseCookie;
 import org.springframework.util.Assert;
@@ -39,32 +41,48 @@ import org.springframework.util.MultiValueMap;
  */
 public abstract class AbstractServerHttpResponse implements ServerHttpResponse {
 
+	private static final int STATE_NEW = 1;
+
+	private static final int STATE_COMMITTING = 2;
+
+	private static final int STATE_COMMITTED = 3;
+
 	private final HttpHeaders headers;
 
 	private final MultiValueMap<String, ResponseCookie> cookies;
 
-	private AtomicReference<State> state = new AtomicReference<>(State.NEW);
+	private final AtomicInteger state = new AtomicInteger(STATE_NEW);
 
 	private final List<Supplier<? extends Mono<Void>>> beforeCommitActions = new ArrayList<>(4);
 
+	private final DataBufferAllocator allocator;
+
+	public AbstractServerHttpResponse(DataBufferAllocator allocator) {
+		Assert.notNull(allocator, "'allocator' must not be null");
 
-	protected AbstractServerHttpResponse() {
+		this.allocator = allocator;
 		this.headers = new HttpHeaders();
 		this.cookies = new LinkedMultiValueMap<String, ResponseCookie>();
 	}
 
+	@Override
+	public final DataBufferAllocator allocator() {
+		return this.allocator;
+	}
 
 	@Override
 	public HttpHeaders getHeaders() {
-		if (State.COMITTED.equals(this.state.get())) {
+		if (STATE_COMMITTED == this.state.get()) {
 			return HttpHeaders.readOnlyHttpHeaders(this.headers);
 		}
-		return this.headers;
+		else {
+			return this.headers;
+		}
 	}
 
 	@Override
 	public MultiValueMap<String, ResponseCookie> getCookies() {
-		if (State.COMITTED.equals(this.state.get())) {
+		if (STATE_COMMITTED == this.state.get()) {
 			return CollectionUtils.unmodifiableMultiValueMap(this.cookies);
 		}
 		return this.cookies;
@@ -78,16 +96,16 @@ public abstract class AbstractServerHttpResponse implements ServerHttpResponse {
 
 	private Mono<Void> applyBeforeCommit() {
 		Mono<Void> mono = Mono.empty();
-		if (this.state.compareAndSet(State.NEW, State.COMMITTING)) {
+		if (this.state.compareAndSet(STATE_NEW, STATE_COMMITTING)) {
 			for (Supplier<? extends Mono<Void>> action : this.beforeCommitActions) {
-				mono = mono.after(() -> action.get());
+				mono = mono.after(action);
 			}
 			mono = mono.otherwise(ex -> {
 				// Ignore errors from beforeCommit actions
 				return Mono.empty();
 			});
 			mono = mono.after(() -> {
-				this.state.set(State.COMITTED);
+				this.state.set(STATE_COMMITTED);
 				writeHeaders();
 				writeCookies();
 				return Mono.empty();
@@ -125,7 +143,4 @@ public abstract class AbstractServerHttpResponse implements ServerHttpResponse {
 		return applyBeforeCommit();
 	}
 
-
-	private enum State { NEW, COMMITTING, COMITTED }
-
 }

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/ReactorHttpHandlerAdapter.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import reactor.core.publisher.Mono;
@@ -44,7 +45,8 @@ public class ReactorHttpHandlerAdapter
 	public Mono<Void> apply(HttpChannel<Buffer, Buffer> channel) {
 		ReactorServerHttpRequest adaptedRequest =
 				new ReactorServerHttpRequest(channel, allocator);
-		ReactorServerHttpResponse adaptedResponse = new ReactorServerHttpResponse(channel);
+		ReactorServerHttpResponse adaptedResponse =
+				new ReactorServerHttpResponse(channel, allocator);
 		return this.httpHandler.handle(adaptedRequest, adaptedResponse);
 	}
 

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/ReactorServerHttpResponse.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import java.time.Duration;
@@ -27,6 +28,7 @@ import reactor.io.netty.http.model.Cookie;
 import reactor.io.netty.http.model.Status;
 
 import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DataBufferAllocator;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseCookie;
 import org.springframework.util.Assert;
@@ -41,8 +43,9 @@ public class ReactorServerHttpResponse extends AbstractServerHttpResponse {
 
 	private final HttpChannel<?, Buffer> channel;
 
-
-	public ReactorServerHttpResponse(HttpChannel<?, Buffer> response) {
+	public ReactorServerHttpResponse(HttpChannel<?, Buffer> response,
+			DataBufferAllocator allocator) {
+		super(allocator);
 		Assert.notNull("'response' must not be null.");
 		this.channel = response;
 	}

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/RxNettyHttpHandlerAdapter.java

@@ -46,7 +46,8 @@ public class RxNettyHttpHandlerAdapter implements RequestHandler<ByteBuf, ByteBu
 
 		RxNettyServerHttpRequest adaptedRequest =
 				new RxNettyServerHttpRequest(request, allocator);
-		RxNettyServerHttpResponse adaptedResponse = new RxNettyServerHttpResponse(response);
+		RxNettyServerHttpResponse adaptedResponse =
+				new RxNettyServerHttpResponse(response, allocator);
 		Publisher<Void> result = this.httpHandler.handle(adaptedRequest, adaptedResponse);
 		return RxJava1ObservableConverter.from(result);
 	}

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/RxNettyServerHttpResponse.java

@@ -29,6 +29,7 @@ import rx.Observable;
 
 import org.springframework.core.io.buffer.DataBuffer;
 import org.springframework.core.io.buffer.NettyDataBuffer;
+import org.springframework.core.io.buffer.NettyDataBufferAllocator;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseCookie;
 import org.springframework.util.Assert;
@@ -43,8 +44,11 @@ public class RxNettyServerHttpResponse extends AbstractServerHttpResponse {
 
 	private final HttpServerResponse<ByteBuf> response;
 
-	public RxNettyServerHttpResponse(HttpServerResponse<ByteBuf> response) {
+	public RxNettyServerHttpResponse(HttpServerResponse<ByteBuf> response,
+			NettyDataBufferAllocator allocator) {
+		super(allocator);
 		Assert.notNull("'response', response must not be null.");
+
 		this.response = response;
 	}
 

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/ServletHttpHandlerAdapter.java

@@ -82,7 +82,8 @@ public class ServletHttpHandlerAdapter extends HttpServlet {
 						this.bufferSize);
 
 		ServletServerHttpResponse response =
-				new ServletServerHttpResponse(synchronizer, this.bufferSize);
+				new ServletServerHttpResponse(synchronizer, this.bufferSize,
+						this.allocator);
 
 		HandlerResultSubscriber resultSubscriber =
 				new HandlerResultSubscriber(synchronizer);

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/ServletServerHttpResponse.java

@@ -34,6 +34,7 @@ import org.reactivestreams.Subscription;
 import reactor.core.publisher.Mono;
 
 import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DataBufferAllocator;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseCookie;
@@ -53,7 +54,8 @@ public class ServletServerHttpResponse extends AbstractServerHttpResponse {
 	private final ResponseBodySubscriber responseBodySubscriber;
 
 	public ServletServerHttpResponse(ServletAsyncContextSynchronizer synchronizer,
-			int bufferSize) throws IOException {
+			int bufferSize, DataBufferAllocator allocator) throws IOException {
+		super(allocator);
 		Assert.notNull(synchronizer, "'synchronizer' must not be null");
 
 		this.response = (HttpServletResponse) synchronizer.getResponse();
@@ -62,7 +64,6 @@ public class ServletServerHttpResponse extends AbstractServerHttpResponse {
 		this.response.getOutputStream().setWriteListener(responseBodySubscriber);
 	}
 
-
 	public HttpServletResponse getServletResponse() {
 		return this.response;
 	}

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/UndertowHttpHandlerAdapter.java

@@ -57,6 +57,7 @@ public class UndertowHttpHandlerAdapter implements io.undertow.server.HttpHandle
 
 	private final HttpHandler delegate;
 
+	// TODO: use UndertowDBA when introduced
 	private final DataBufferAllocator allocator;
 
 	public UndertowHttpHandlerAdapter(HttpHandler delegate,
@@ -76,7 +77,9 @@ public class UndertowHttpHandlerAdapter implements io.undertow.server.HttpHandle
 
 		ResponseBodySubscriber responseBodySubscriber = new ResponseBodySubscriber(exchange);
 		ServerHttpResponse response = new UndertowServerHttpResponse(exchange,
-				publisher -> Mono.from(subscriber -> publisher.subscribe(responseBodySubscriber)));
+				publisher -> Mono
+						.from(subscriber -> publisher.subscribe(responseBodySubscriber)),
+				allocator);
 
 		exchange.dispatch();
 

spring-web-reactive/src/main/java/org/springframework/http/server/reactive/UndertowServerHttpResponse.java

@@ -28,6 +28,7 @@ import org.reactivestreams.Publisher;
 import reactor.core.publisher.Mono;
 
 import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DataBufferAllocator;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseCookie;
 import org.springframework.util.Assert;
@@ -44,10 +45,10 @@ public class UndertowServerHttpResponse extends AbstractServerHttpResponse {
 
 	private final Function<Publisher<DataBuffer>, Mono<Void>> responseBodyWriter;
 
-
 	public UndertowServerHttpResponse(HttpServerExchange exchange,
-			Function<Publisher<DataBuffer>, Mono<Void>> responseBodyWriter) {
-
+			Function<Publisher<DataBuffer>, Mono<Void>> responseBodyWriter,
+			DataBufferAllocator allocator) {
+		super(allocator);
 		Assert.notNull(exchange, "'exchange' is required.");
 		Assert.notNull(responseBodyWriter, "'responseBodyWriter' must not be null");
 		this.exchange = exchange;

spring-web-reactive/src/main/java/org/springframework/web/client/reactive/DefaultHttpRequestBuilder.java

@@ -30,6 +30,7 @@ import reactor.core.publisher.Flux;
 
 import org.springframework.core.ResolvableType;
 import org.springframework.core.codec.Encoder;
+import org.springframework.core.io.buffer.DataBufferAllocator;
 import org.springframework.http.HttpCookie;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
@@ -146,7 +147,10 @@ public class DefaultHttpRequestBuilder implements HttpRequestBuilder {
 			Optional<Encoder<?>> messageEncoder = resolveEncoder(requestBodyType, mediaType);
 
 			if (messageEncoder.isPresent()) {
-				request.setBody(messageEncoder.get().encode(this.contentPublisher, requestBodyType, mediaType));
+				DataBufferAllocator allocator = request.allocator();
+				request.setBody(messageEncoder.get()
+						.encode(this.contentPublisher, allocator, requestBodyType,
+								mediaType));
 			}
 			else {
 				// TODO: wrap with client exception?

spring-web-reactive/src/main/java/org/springframework/web/client/reactive/WebClient.java

@@ -86,8 +86,8 @@ public final class WebClient {
 	public WebClient(ClientHttpRequestFactory requestFactory) {
 		this.requestFactory = requestFactory;
 		DataBufferAllocator allocator = new DefaultDataBufferAllocator();
-		this.messageEncoders = Arrays.asList(new ByteBufferEncoder(allocator), new StringEncoder(allocator),
-				new JacksonJsonEncoder(allocator));
+		this.messageEncoders = Arrays.asList(new ByteBufferEncoder(), new StringEncoder(),
+				new JacksonJsonEncoder());
 		this.messageDecoders = Arrays.asList(new ByteBufferDecoder(), new StringDecoder(allocator),
 				new JacksonJsonDecoder(new JsonObjectDecoder()));
 	}

spring-web-reactive/src/main/java/org/springframework/web/reactive/method/annotation/ResponseBodyResultHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -36,6 +36,7 @@ import org.springframework.core.ResolvableType;
 import org.springframework.core.annotation.AnnotationUtils;
 import org.springframework.core.codec.Encoder;
 import org.springframework.core.convert.ConversionService;
+import org.springframework.core.io.buffer.DataBufferAllocator;
 import org.springframework.http.MediaType;
 import org.springframework.http.server.reactive.ServerHttpRequest;
 import org.springframework.http.server.reactive.ServerHttpResponse;
@@ -192,7 +193,10 @@ public class ResponseBodyResultHandler implements HandlerResultHandler, Ordered
 			if (encoder != null) {
 				ServerHttpResponse response = exchange.getResponse();
 				response.getHeaders().setContentType(selectedMediaType);
-				return response.setBody(encoder.encode((Publisher) publisher, elementType, selectedMediaType));
+				DataBufferAllocator allocator = response.allocator();
+				return response.setBody(
+						encoder.encode((Publisher) publisher, allocator, elementType,
+								selectedMediaType));
 			}
 		}
 

spring-web-reactive/src/test/java/org/springframework/http/server/reactive/MockServerHttpResponse.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import java.util.function.Supplier;
@@ -22,6 +23,8 @@ import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
 import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DataBufferAllocator;
+import org.springframework.core.io.buffer.DefaultDataBufferAllocator;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseCookie;
@@ -41,6 +44,8 @@ public class MockServerHttpResponse implements ServerHttpResponse {
 
 	private Publisher<DataBuffer> body;
 
+	private DataBufferAllocator allocator = new DefaultDataBufferAllocator();
+
 
 	@Override
 	public void setStatusCode(HttpStatus status) {
@@ -80,4 +85,9 @@ public class MockServerHttpResponse implements ServerHttpResponse {
 		return Mono.empty();
 	}
 
+	@Override
+	public DataBufferAllocator allocator() {
+		return this.allocator;
+	}
+
 }

spring-web-reactive/src/test/java/org/springframework/http/server/reactive/ServerHttpResponseTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import java.nio.ByteBuffer;
@@ -31,10 +32,7 @@ import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseCookie;
 
 import static junit.framework.TestCase.assertTrue;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertSame;
+import static org.junit.Assert.*;
 
 /**
  * @author Rossen Stoyanchev
@@ -147,6 +145,9 @@ public class ServerHttpResponseTests {
 
 		private final List<DataBuffer> content = new ArrayList<>();
 
+		public TestServerHttpResponse() {
+			super(new DefaultDataBufferAllocator());
+		}
 
 		@Override
 		public void setStatusCode(HttpStatus status) {

spring-web-reactive/src/test/java/org/springframework/web/reactive/DispatcherHandlerErrorTests.java

@@ -232,8 +232,7 @@ public class DispatcherHandlerErrorTests {
 
 		@Bean
 		public ResponseBodyResultHandler resultHandler() {
-			List<Encoder<?>> encoders = Collections
-					.singletonList(new StringEncoder(new DefaultDataBufferAllocator()));
+			List<Encoder<?>> encoders = Collections.singletonList(new StringEncoder());
 			return new ResponseBodyResultHandler(encoders, new DefaultConversionService());
 		}
 

spring-web-reactive/src/test/java/org/springframework/web/reactive/method/annotation/RequestMappingIntegrationTests.java

@@ -379,9 +379,8 @@ public class RequestMappingIntegrationTests extends AbstractHttpHandlerIntegrati
 
 		@Bean
 		public ResponseBodyResultHandler responseBodyResultHandler() {
-			List<Encoder<?>> encoders = Arrays.asList(
-					new ByteBufferEncoder(this.allocator), new StringEncoder(this.allocator),
-					new JacksonJsonEncoder(this.allocator, new JsonObjectEncoder(this.allocator)));
+			List<Encoder<?>> encoders = Arrays.asList(new ByteBufferEncoder(),
+					new StringEncoder(), new JacksonJsonEncoder(new JsonObjectEncoder()));
 			ResponseBodyResultHandler resultHandler = new ResponseBodyResultHandler(encoders, conversionService());
 			resultHandler.setOrder(1);
 			return resultHandler;
@@ -458,8 +457,9 @@ public class RequestMappingIntegrationTests extends AbstractHttpHandlerIntegrati
 
 		@RequestMapping("/raw")
 		public Publisher<ByteBuffer> rawResponseBody() {
-			JacksonJsonEncoder encoder = new JacksonJsonEncoder(new DefaultDataBufferAllocator());
-			return encoder.encode(Mono.just(new Person("Robert")),
+			DataBufferAllocator allocator = new DefaultDataBufferAllocator();
+			JacksonJsonEncoder encoder = new JacksonJsonEncoder();
+			return encoder.encode(Mono.just(new Person("Robert")), allocator,
 					ResolvableType.forClass(Person.class), MediaType.APPLICATION_JSON).map(DataBuffer::asByteBuffer);
 		}
 

spring-web-reactive/src/test/java/org/springframework/web/reactive/method/annotation/ResponseBodyResultHandlerTests.java

@@ -24,7 +24,6 @@ import org.reactivestreams.Publisher;
 import org.springframework.core.ResolvableType;
 import org.springframework.core.codec.support.StringEncoder;
 import org.springframework.core.convert.support.DefaultConversionService;
-import org.springframework.core.io.buffer.DefaultDataBufferAllocator;
 import org.springframework.ui.ExtendedModelMap;
 import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.method.HandlerMethod;
@@ -42,7 +41,7 @@ public class ResponseBodyResultHandlerTests {
 	@Test
 	public void supports() throws NoSuchMethodException {
 		ResponseBodyResultHandler handler = new ResponseBodyResultHandler(Collections.singletonList(
-				new StringEncoder(new DefaultDataBufferAllocator())),
+				new StringEncoder()),
 				new DefaultConversionService());
 		TestController controller = new TestController();