/*
* Copyright 2002-2017 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.web.server.adapter;
import java.nio.charset.StandardCharsets;
import org.junit.Test;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DefaultDataBufferFactory;
import org.springframework.http.server.reactive.HttpHandler;
import org.springframework.mock.http.server.reactive.test.MockServerHttpRequest;
import org.springframework.mock.http.server.reactive.test.MockServerHttpResponse;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.WebExceptionHandler;
import org.springframework.web.server.WebFilter;
import org.springframework.web.server.WebHandler;
import static java.time.Duration.*;
import static org.junit.Assert.*;
/**
* Unit tests for {@link WebHttpHandlerBuilder}.
*
* @author Rossen Stoyanchev
*/
public class WebHttpHandlerBuilderTests {
@Test // SPR-15074
public void orderedWebFilterBeans() throws Exception {
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
context.register(OrderedWebFilterBeanConfig.class);
context.refresh();
HttpHandler httpHandler = WebHttpHandlerBuilder.applicationContext(context).build();
MockServerHttpRequest request = MockServerHttpRequest.get("/").build();
MockServerHttpResponse response = new MockServerHttpResponse();
httpHandler.handle(request, response).block(ofMillis(5000));
assertEquals("FilterB::FilterA", response.getBodyAsString().block(ofMillis(5000)));
}
@Test // SPR-15074
public void orderedWebExceptionHandlerBeans() throws Exception {
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
context.register(OrderedExceptionHandlerBeanConfig.class);
context.refresh();
HttpHandler httpHandler = WebHttpHandlerBuilder.applicationContext(context).build();
MockServerHttpRequest request = MockServerHttpRequest.get("/").build();
MockServerHttpResponse response = new MockServerHttpResponse();
httpHandler.handle(request, response).block(ofMillis(5000));
assertEquals("ExceptionHandlerB", response.getBodyAsString().block(ofMillis(5000)));
}
@Test
public void configWithoutFilters() throws Exception {
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
context.register(NoFilterConfig.class);
context.refresh();
HttpHandler httpHandler = WebHttpHandlerBuilder.applicationContext(context).build();
MockServerHttpRequest request = MockServerHttpRequest.get("/").build();
MockServerHttpResponse response = new MockServerHttpResponse();
httpHandler.handle(request, response).block(ofMillis(5000));
assertEquals("handled", response.getBodyAsString().block(ofMillis(5000)));
}
private static Mono<Void> writeToResponse(ServerWebExchange exchange, String value) {
byte[] bytes = value.getBytes(StandardCharsets.UTF_8);
DataBuffer buffer = new DefaultDataBufferFactory().wrap(bytes);
return exchange.getResponse().writeWith(Flux.just(buffer));
}
@Configuration
@SuppressWarnings("unused")
static class OrderedWebFilterBeanConfig {
private static final String ATTRIBUTE = "attr";
@Bean @Order(2)
public WebFilter filterA() {
return createFilter("FilterA");
}
@Bean @Order(1)
public WebFilter filterB() {
return createFilter("FilterB");
}
private WebFilter createFilter(String name) {
return (exchange, chain) -> {
String value = exchange.getAttribute(ATTRIBUTE).map(v -> v + "::" + name).orElse(name);
exchange.getAttributes().put(ATTRIBUTE, value);
return chain.filter(exchange);
};
}
@Bean
public WebHandler webHandler() {
return exchange -> {
String value = exchange.getAttribute(ATTRIBUTE).map(v -> (String) v).orElse("none");
return writeToResponse(exchange, value);
};
}
}
@Configuration
@SuppressWarnings("unused")
static class OrderedExceptionHandlerBeanConfig {
@Bean
@Order(2)
public WebExceptionHandler exceptionHandlerA() {
return (exchange, ex) -> writeToResponse(exchange, "ExceptionHandlerA");
}
@Bean
@Order(1)
public WebExceptionHandler exceptionHandlerB() {
return (exchange, ex) -> writeToResponse(exchange, "ExceptionHandlerB");
}
@Bean
public WebHandler webHandler() {
return exchange -> Mono.error(new Exception());
}
}
@Configuration
@SuppressWarnings("unused")
static class NoFilterConfig {
@Bean
public WebHandler webHandler() {
return exchange -> writeToResponse(exchange, "handled");
}
}
}