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AbstractReactiveWebServerFactoryTests.java
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AbstractReactiveWebServerFactoryTests.java
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/*
* Copyright 2012-2020 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
*
* https://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.boot.web.reactive.server;
import java.io.File;
import java.io.FileInputStream;
import java.net.InetSocketAddress;
import java.nio.charset.StandardCharsets;
import java.security.KeyStore;
import java.time.Duration;
import java.util.Arrays;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLException;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.codec.http.HttpHeaderNames;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.SslProvider;
import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
import org.assertj.core.api.ThrowableAssert.ThrowingCallable;
import org.awaitility.Awaitility;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.Test;
import reactor.core.publisher.Mono;
import reactor.core.publisher.MonoProcessor;
import reactor.netty.NettyPipeline;
import reactor.netty.http.client.HttpClient;
import reactor.test.StepVerifier;
import org.springframework.boot.web.server.Compression;
import org.springframework.boot.web.server.GracefulShutdownResult;
import org.springframework.boot.web.server.Shutdown;
import org.springframework.boot.web.server.Ssl;
import org.springframework.boot.web.server.WebServer;
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.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.http.server.reactive.HttpHandler;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.util.SocketUtils;
import org.springframework.util.unit.DataSize;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.client.WebClient;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
/**
* Base for testing classes that extends {@link AbstractReactiveWebServerFactory}.
*
* @author Brian Clozel
*/
public abstract class AbstractReactiveWebServerFactoryTests {
protected WebServer webServer;
@AfterEach
void tearDown() {
if (this.webServer != null) {
try {
this.webServer.stop();
}
catch (Exception ex) {
// Ignore
}
}
}
protected abstract AbstractReactiveWebServerFactory getFactory();
@Test
void specificPort() throws Exception {
AbstractReactiveWebServerFactory factory = getFactory();
int specificPort = doWithRetry(() -> {
int port = SocketUtils.findAvailableTcpPort(41000);
factory.setPort(port);
this.webServer = factory.getWebServer(new EchoHandler());
this.webServer.start();
return port;
});
Mono<String> result = getWebClient(this.webServer.getPort()).build().post().uri("/test")
.contentType(MediaType.TEXT_PLAIN).body(BodyInserters.fromValue("Hello World")).exchange()
.flatMap((response) -> response.bodyToMono(String.class));
assertThat(result.block(Duration.ofSeconds(30))).isEqualTo("Hello World");
assertThat(this.webServer.getPort()).isEqualTo(specificPort);
}
@Test
void basicSslFromClassPath() {
testBasicSslWithKeyStore("classpath:test.jks", "password");
}
@Test
void basicSslFromFileSystem() {
testBasicSslWithKeyStore("src/test/resources/test.jks", "password");
}
protected final void testBasicSslWithKeyStore(String keyStore, String keyPassword) {
AbstractReactiveWebServerFactory factory = getFactory();
Ssl ssl = new Ssl();
ssl.setKeyStore(keyStore);
ssl.setKeyPassword(keyPassword);
factory.setSsl(ssl);
this.webServer = factory.getWebServer(new EchoHandler());
this.webServer.start();
ReactorClientHttpConnector connector = buildTrustAllSslConnector();
WebClient client = WebClient.builder().baseUrl("https://localhost:" + this.webServer.getPort())
.clientConnector(connector).build();
Mono<String> result = client.post().uri("/test").contentType(MediaType.TEXT_PLAIN)
.body(BodyInserters.fromValue("Hello World")).exchange()
.flatMap((response) -> response.bodyToMono(String.class));
assertThat(result.block(Duration.ofSeconds(30))).isEqualTo("Hello World");
}
@Test
void sslWithValidAlias() {
String keyStore = "classpath:test.jks";
String keyPassword = "password";
AbstractReactiveWebServerFactory factory = getFactory();
Ssl ssl = new Ssl();
ssl.setKeyStore(keyStore);
ssl.setKeyPassword(keyPassword);
ssl.setKeyAlias("test-alias");
factory.setSsl(ssl);
this.webServer = factory.getWebServer(new EchoHandler());
this.webServer.start();
ReactorClientHttpConnector connector = buildTrustAllSslConnector();
WebClient client = WebClient.builder().baseUrl("https://localhost:" + this.webServer.getPort())
.clientConnector(connector).build();
Mono<String> result = client.post().uri("/test").contentType(MediaType.TEXT_PLAIN)
.body(BodyInserters.fromValue("Hello World")).exchange()
.flatMap((response) -> response.bodyToMono(String.class));
StepVerifier.setDefaultTimeout(Duration.ofSeconds(30));
StepVerifier.create(result).expectNext("Hello World").verifyComplete();
}
@Test
void sslWithInvalidAliasFailsDuringStartup() {
String keyStore = "classpath:test.jks";
String keyPassword = "password";
AbstractReactiveWebServerFactory factory = getFactory();
Ssl ssl = new Ssl();
ssl.setKeyStore(keyStore);
ssl.setKeyPassword(keyPassword);
ssl.setKeyAlias("test-alias-404");
factory.setSsl(ssl);
assertThatSslWithInvalidAliasCallFails(() -> factory.getWebServer(new EchoHandler()).start());
}
protected void assertThatSslWithInvalidAliasCallFails(ThrowingCallable call) {
assertThatThrownBy(call).hasStackTraceContaining("Keystore does not contain specified alias 'test-alias-404'");
}
protected ReactorClientHttpConnector buildTrustAllSslConnector() {
SslContextBuilder builder = SslContextBuilder.forClient().sslProvider(SslProvider.JDK)
.trustManager(InsecureTrustManagerFactory.INSTANCE);
HttpClient client = HttpClient.create().wiretap(true)
.secure((sslContextSpec) -> sslContextSpec.sslContext(builder));
return new ReactorClientHttpConnector(client);
}
@Test
void sslWantsClientAuthenticationSucceedsWithClientCertificate() throws Exception {
Ssl ssl = new Ssl();
ssl.setClientAuth(Ssl.ClientAuth.WANT);
ssl.setKeyStore("classpath:test.jks");
ssl.setKeyPassword("password");
ssl.setTrustStore("classpath:test.jks");
testClientAuthSuccess(ssl, buildTrustAllSslWithClientKeyConnector());
}
@Test
void sslWantsClientAuthenticationSucceedsWithoutClientCertificate() {
Ssl ssl = new Ssl();
ssl.setClientAuth(Ssl.ClientAuth.WANT);
ssl.setKeyStore("classpath:test.jks");
ssl.setKeyPassword("password");
ssl.setTrustStore("classpath:test.jks");
testClientAuthSuccess(ssl, buildTrustAllSslConnector());
}
protected ReactorClientHttpConnector buildTrustAllSslWithClientKeyConnector() throws Exception {
KeyStore clientKeyStore = KeyStore.getInstance(KeyStore.getDefaultType());
clientKeyStore.load(new FileInputStream(new File("src/test/resources/test.jks")), "secret".toCharArray());
KeyManagerFactory clientKeyManagerFactory = KeyManagerFactory
.getInstance(KeyManagerFactory.getDefaultAlgorithm());
clientKeyManagerFactory.init(clientKeyStore, "password".toCharArray());
SslContextBuilder builder = SslContextBuilder.forClient().sslProvider(SslProvider.JDK)
.trustManager(InsecureTrustManagerFactory.INSTANCE).keyManager(clientKeyManagerFactory);
HttpClient client = HttpClient.create().wiretap(true)
.secure((sslContextSpec) -> sslContextSpec.sslContext(builder));
return new ReactorClientHttpConnector(client);
}
protected void testClientAuthSuccess(Ssl sslConfiguration, ReactorClientHttpConnector clientConnector) {
AbstractReactiveWebServerFactory factory = getFactory();
factory.setSsl(sslConfiguration);
this.webServer = factory.getWebServer(new EchoHandler());
this.webServer.start();
WebClient client = WebClient.builder().baseUrl("https://localhost:" + this.webServer.getPort())
.clientConnector(clientConnector).build();
Mono<String> result = client.post().uri("/test").contentType(MediaType.TEXT_PLAIN)
.body(BodyInserters.fromValue("Hello World")).exchange()
.flatMap((response) -> response.bodyToMono(String.class));
assertThat(result.block(Duration.ofSeconds(30))).isEqualTo("Hello World");
}
@Test
void sslNeedsClientAuthenticationSucceedsWithClientCertificate() throws Exception {
Ssl ssl = new Ssl();
ssl.setClientAuth(Ssl.ClientAuth.NEED);
ssl.setKeyStore("classpath:test.jks");
ssl.setKeyPassword("password");
ssl.setTrustStore("classpath:test.jks");
testClientAuthSuccess(ssl, buildTrustAllSslWithClientKeyConnector());
}
@Test
void sslNeedsClientAuthenticationFailsWithoutClientCertificate() {
Ssl ssl = new Ssl();
ssl.setClientAuth(Ssl.ClientAuth.NEED);
ssl.setKeyStore("classpath:test.jks");
ssl.setKeyPassword("password");
ssl.setTrustStore("classpath:test.jks");
testClientAuthFailure(ssl, buildTrustAllSslConnector());
}
protected void testClientAuthFailure(Ssl sslConfiguration, ReactorClientHttpConnector clientConnector) {
AbstractReactiveWebServerFactory factory = getFactory();
factory.setSsl(sslConfiguration);
this.webServer = factory.getWebServer(new EchoHandler());
this.webServer.start();
WebClient client = WebClient.builder().baseUrl("https://localhost:" + this.webServer.getPort())
.clientConnector(clientConnector).build();
Mono<String> result = client.post().uri("/test").contentType(MediaType.TEXT_PLAIN)
.body(BodyInserters.fromValue("Hello World")).exchange()
.flatMap((response) -> response.bodyToMono(String.class));
StepVerifier.create(result).expectError(SSLException.class).verify(Duration.ofSeconds(10));
}
protected WebClient.Builder getWebClient(int port) {
return getWebClient(HttpClient.create().wiretap(true), port);
}
protected WebClient.Builder getWebClient(HttpClient client, int port) {
InetSocketAddress address = new InetSocketAddress(port);
String baseUrl = "http://" + address.getHostString() + ":" + address.getPort();
return WebClient.builder().clientConnector(new ReactorClientHttpConnector(client)).baseUrl(baseUrl);
}
@Test
protected void compressionOfResponseToGetRequest() {
WebClient client = prepareCompressionTest();
ResponseEntity<Void> response = client.get().exchange().flatMap((res) -> res.toEntity(Void.class))
.block(Duration.ofSeconds(30));
assertResponseIsCompressed(response);
}
@Test
protected void compressionOfResponseToPostRequest() {
WebClient client = prepareCompressionTest();
ResponseEntity<Void> response = client.post().exchange().flatMap((res) -> res.toEntity(Void.class))
.block(Duration.ofSeconds(30));
assertResponseIsCompressed(response);
}
@Test
void noCompressionForSmallResponse() {
Compression compression = new Compression();
compression.setEnabled(true);
compression.setMinResponseSize(DataSize.ofBytes(3001));
WebClient client = prepareCompressionTest(compression);
ResponseEntity<Void> response = client.get().exchange().flatMap((res) -> res.toEntity(Void.class))
.block(Duration.ofSeconds(30));
assertResponseIsNotCompressed(response);
}
@Test
void noCompressionForMimeType() {
Compression compression = new Compression();
compression.setEnabled(true);
compression.setMimeTypes(new String[] { "application/json" });
WebClient client = prepareCompressionTest(compression);
ResponseEntity<Void> response = client.get().exchange().flatMap((res) -> res.toEntity(Void.class))
.block(Duration.ofSeconds(30));
assertResponseIsNotCompressed(response);
}
@Test
void noCompressionForUserAgent() {
Compression compression = new Compression();
compression.setEnabled(true);
compression.setExcludedUserAgents(new String[] { "testUserAgent" });
WebClient client = prepareCompressionTest(compression);
ResponseEntity<Void> response = client.get().header("User-Agent", "testUserAgent").exchange()
.flatMap((res) -> res.toEntity(Void.class)).block(Duration.ofSeconds(30));
assertResponseIsNotCompressed(response);
}
@Test
void noCompressionForResponseWithInvalidContentType() {
Compression compression = new Compression();
compression.setEnabled(true);
compression.setMimeTypes(new String[] { "application/json" });
WebClient client = prepareCompressionTest(compression, "test~plain");
ResponseEntity<Void> response = client.get().exchange().flatMap((res) -> res.toEntity(Void.class))
.block(Duration.ofSeconds(30));
assertResponseIsNotCompressed(response);
}
@Test
void whenSslIsEnabledAndNoKeyStoreIsConfiguredThenServerFailsToStart() {
assertThatThrownBy(() -> testBasicSslWithKeyStore(null, null))
.hasMessageContaining("Could not load key store 'null'");
}
@Test
void whenThereAreNoInFlightRequestsShutDownGracefullyReturnsTrueBeforePeriodElapses() throws Exception {
AbstractReactiveWebServerFactory factory = getFactory();
factory.setShutdown(Shutdown.GRACEFUL);
this.webServer = factory.getWebServer(new EchoHandler());
this.webServer.start();
AtomicReference<GracefulShutdownResult> result = new AtomicReference<>();
this.webServer.shutDownGracefully(result::set);
Awaitility.await().atMost(Duration.ofSeconds(30)).until(() -> GracefulShutdownResult.IDLE == result.get());
}
@Test
void whenARequestRemainsInFlightThenShutDownGracefullyDoesNotInvokeCallbackUntilTheRequestCompletes()
throws Exception {
AbstractReactiveWebServerFactory factory = getFactory();
factory.setShutdown(Shutdown.GRACEFUL);
BlockingHandler blockingHandler = new BlockingHandler();
this.webServer = factory.getWebServer(blockingHandler);
this.webServer.start();
Mono<ResponseEntity<Void>> request = getWebClient(this.webServer.getPort()).build().get().retrieve()
.toBodilessEntity();
AtomicReference<ResponseEntity<Void>> responseReference = new AtomicReference<>();
CountDownLatch responseLatch = new CountDownLatch(1);
request.subscribe((response) -> {
responseReference.set(response);
responseLatch.countDown();
});
blockingHandler.awaitQueue();
AtomicReference<GracefulShutdownResult> result = new AtomicReference<>();
this.webServer.shutDownGracefully(result::set);
assertThat(responseReference.get()).isNull();
blockingHandler.completeOne();
assertThat(responseLatch.await(5, TimeUnit.SECONDS)).isTrue();
Awaitility.await().atMost(Duration.ofSeconds(30)).until(() -> GracefulShutdownResult.IDLE == result.get());
}
@Test
void givenAnInflightRequestWhenTheServerIsStoppedThenGracefulShutdownCallbackIsCalledWithRequestsActive()
throws Exception {
AbstractReactiveWebServerFactory factory = getFactory();
factory.setShutdown(Shutdown.GRACEFUL);
BlockingHandler blockingHandler = new BlockingHandler();
this.webServer = factory.getWebServer(blockingHandler);
this.webServer.start();
Mono<ResponseEntity<Void>> request = getWebClient(this.webServer.getPort()).build().get().retrieve()
.toBodilessEntity();
AtomicReference<ResponseEntity<Void>> responseReference = new AtomicReference<>();
CountDownLatch responseLatch = new CountDownLatch(1);
request.subscribe((response) -> {
responseReference.set(response);
responseLatch.countDown();
});
blockingHandler.awaitQueue();
AtomicReference<GracefulShutdownResult> result = new AtomicReference<>();
this.webServer.shutDownGracefully(result::set);
assertThat(responseReference.get()).isNull();
try {
this.webServer.stop();
}
catch (Exception ex) {
// Continue
}
System.out.println("Stopped");
Awaitility.await().atMost(Duration.ofSeconds(5))
.until(() -> GracefulShutdownResult.REQUESTS_ACTIVE == result.get());
blockingHandler.completeOne();
}
@Test
void whenARequestIsActiveThenStopWillComplete() throws InterruptedException, BrokenBarrierException {
AbstractReactiveWebServerFactory factory = getFactory();
BlockingHandler blockingHandler = new BlockingHandler();
this.webServer = factory.getWebServer(blockingHandler);
this.webServer.start();
Mono<ResponseEntity<Void>> request = getWebClient(this.webServer.getPort()).build().get().retrieve()
.toBodilessEntity();
AtomicReference<ResponseEntity<Void>> responseReference = new AtomicReference<>();
CountDownLatch responseLatch = new CountDownLatch(1);
request.subscribe((response) -> {
responseReference.set(response);
responseLatch.countDown();
});
blockingHandler.awaitQueue();
try {
this.webServer.stop();
}
catch (Exception ex) {
// Continue
}
blockingHandler.completeOne();
}
protected WebClient prepareCompressionTest() {
Compression compression = new Compression();
compression.setEnabled(true);
return prepareCompressionTest(compression);
}
protected WebClient prepareCompressionTest(Compression compression) {
return prepareCompressionTest(compression, MediaType.TEXT_PLAIN_VALUE);
}
protected WebClient prepareCompressionTest(Compression compression, String responseContentType) {
AbstractReactiveWebServerFactory factory = getFactory();
factory.setCompression(compression);
this.webServer = factory.getWebServer(new CharsHandler(3000, responseContentType));
this.webServer.start();
HttpClient client = HttpClient.create().wiretap(true).compress(true)
.tcpConfiguration((tcpClient) -> tcpClient.doOnConnected(
(connection) -> connection.channel().pipeline().addBefore(NettyPipeline.HttpDecompressor,
"CompressionTest", new CompressionDetectionHandler())));
return getWebClient(client, this.webServer.getPort()).build();
}
protected void assertResponseIsCompressed(ResponseEntity<Void> response) {
assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
assertThat(response.getHeaders().getFirst("X-Test-Compressed")).isEqualTo("true");
}
protected void assertResponseIsNotCompressed(ResponseEntity<Void> response) {
assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
assertThat(response.getHeaders().keySet()).doesNotContain("X-Test-Compressed");
}
protected void assertForwardHeaderIsUsed(AbstractReactiveWebServerFactory factory) {
this.webServer = factory.getWebServer(new XForwardedHandler());
this.webServer.start();
String body = getWebClient(this.webServer.getPort()).build().get().header("X-Forwarded-Proto", "https")
.retrieve().bodyToMono(String.class).block(Duration.ofSeconds(30));
assertThat(body).isEqualTo("https");
}
private <T> T doWithRetry(Callable<T> action) throws Exception {
Exception lastFailure = null;
for (int i = 0; i < 10; i++) {
try {
return action.call();
}
catch (Exception ex) {
lastFailure = ex;
}
}
throw new IllegalStateException("Action was not successful in 10 attempts", lastFailure);
}
protected static class EchoHandler implements HttpHandler {
public EchoHandler() {
}
@Override
public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
response.setStatusCode(HttpStatus.OK);
return response.writeWith(request.getBody());
}
}
protected static class BlockingHandler implements HttpHandler {
private final BlockingQueue<MonoProcessor<Void>> monoProcessors = new ArrayBlockingQueue<>(10);
private volatile boolean blocking = true;
public BlockingHandler() {
}
@Override
public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
if (this.blocking) {
MonoProcessor<Void> completion = MonoProcessor.create();
this.monoProcessors.add(completion);
return completion.then(Mono.empty());
}
return Mono.empty();
}
public void completeOne() {
try {
MonoProcessor<Void> processor = this.monoProcessors.take();
processor.onComplete();
}
catch (InterruptedException ex) {
Thread.currentThread().interrupt();
}
}
public void awaitQueue() throws InterruptedException {
while (this.monoProcessors.isEmpty()) {
Thread.sleep(100);
}
}
public void stopBlocking() {
this.blocking = false;
this.monoProcessors.forEach(MonoProcessor::onComplete);
}
}
static class CompressionDetectionHandler extends ChannelInboundHandlerAdapter {
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
if (msg instanceof HttpResponse) {
HttpResponse response = (HttpResponse) msg;
boolean compressed = response.headers().contains(HttpHeaderNames.CONTENT_ENCODING, "gzip", true);
if (compressed) {
response.headers().set("X-Test-Compressed", "true");
}
}
ctx.fireChannelRead(msg);
}
}
static class CharsHandler implements HttpHandler {
private static final DefaultDataBufferFactory factory = new DefaultDataBufferFactory();
private final DataBuffer bytes;
private final String mediaType;
CharsHandler(int contentSize, String mediaType) {
char[] chars = new char[contentSize];
Arrays.fill(chars, 'F');
this.bytes = factory.wrap(new String(chars).getBytes(StandardCharsets.UTF_8));
this.mediaType = mediaType;
}
@Override
public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
response.setStatusCode(HttpStatus.OK);
response.getHeaders().set(HttpHeaders.CONTENT_TYPE, this.mediaType);
response.getHeaders().setContentLength(this.bytes.readableByteCount());
return response.writeWith(Mono.just(this.bytes));
}
}
static class XForwardedHandler implements HttpHandler {
@Override
public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
String scheme = request.getURI().getScheme();
DataBufferFactory bufferFactory = new DefaultDataBufferFactory();
DataBuffer buffer = bufferFactory.wrap(scheme.getBytes(StandardCharsets.UTF_8));
return response.writeWith(Mono.just(buffer));
}
}
}