/*
* 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.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.http.server.reactive;
import java.net.URI;
import java.util.Random;
import org.junit.Test;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.DefaultDataBufferFactory;
import org.springframework.http.RequestEntity;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;
import static org.junit.Assert.*;
public class RandomHandlerIntegrationTests extends AbstractHttpHandlerIntegrationTests {
public static final int REQUEST_SIZE = 4096 * 3;
public static final int RESPONSE_SIZE = 1024 * 4;
private final Random rnd = new Random();
private final RandomHandler handler = new RandomHandler();
private final DataBufferFactory dataBufferFactory = new DefaultDataBufferFactory();
@Override
protected RandomHandler createHttpHandler() {
return handler;
}
@Test
public void random() throws Throwable {
// TODO: fix Reactor support
RestTemplate restTemplate = new RestTemplate();
byte[] body = randomBytes();
RequestEntity<byte[]> request = RequestEntity.post(new URI("http://localhost:" + port)).body(body);
ResponseEntity<byte[]> response = restTemplate.exchange(request, byte[].class);
assertNotNull(response.getBody());
assertEquals(RESPONSE_SIZE,
response.getHeaders().getContentLength());
assertEquals(RESPONSE_SIZE, response.getBody().length);
}
private byte[] randomBytes() {
byte[] buffer = new byte[REQUEST_SIZE];
rnd.nextBytes(buffer);
return buffer;
}
private class RandomHandler implements HttpHandler {
public static final int CHUNKS = 16;
@Override
public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
Mono<Integer> requestSizeMono = request.getBody().
reduce(0, (integer, dataBuffer) -> integer +
dataBuffer.readableByteCount()).
doAfterTerminate((size, throwable) -> {
assertNull(throwable);
assertEquals(REQUEST_SIZE, (long) size);
});
response.getHeaders().setContentLength(RESPONSE_SIZE);
return requestSizeMono.then(response.writeWith(multipleChunks()));
}
private Publisher<DataBuffer> multipleChunks() {
int chunkSize = RESPONSE_SIZE / CHUNKS;
return Flux.range(1, CHUNKS).map(integer -> randomBuffer(chunkSize));
}
private DataBuffer randomBuffer(int size) {
byte[] bytes = new byte[size];
rnd.nextBytes(bytes);
DataBuffer buffer = dataBufferFactory.allocateBuffer(size);
buffer.write(bytes);
return buffer;
}
}
}