Merge branch '1.4.x' into 1.5.x

spring-boot-devtools/src/main/java/org/springframework/boot/devtools/restart/ClassLoaderFilesResourcePatternResolver.java

@@ -0,0 +1,165 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.restart;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map.Entry;
+import java.util.Set;
+
+import org.springframework.boot.devtools.restart.classloader.ClassLoaderFile;
+import org.springframework.boot.devtools.restart.classloader.ClassLoaderFile.Kind;
+import org.springframework.boot.devtools.restart.classloader.ClassLoaderFileURLStreamHandler;
+import org.springframework.boot.devtools.restart.classloader.ClassLoaderFiles;
+import org.springframework.boot.devtools.restart.classloader.ClassLoaderFiles.SourceFolder;
+import org.springframework.core.io.AbstractResource;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.UrlResource;
+import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
+import org.springframework.core.io.support.ResourcePatternResolver;
+import org.springframework.util.AntPathMatcher;
+
+/**
+ * A {@code ResourcePatternResolver} that considers {@link ClassLoaderFiles} when
+ * resolving resources.
+ *
+ * @author Andy Wilkinson
+ */
+final class ClassLoaderFilesResourcePatternResolver implements ResourcePatternResolver {
+
+	private static final Set<String> LOCATION_PATTERN_PREFIXES = Collections
+			.unmodifiableSet(new HashSet<String>(
+					Arrays.asList(CLASSPATH_ALL_URL_PREFIX, CLASSPATH_URL_PREFIX)));
+
+	private final ResourcePatternResolver delegate = new PathMatchingResourcePatternResolver();
+
+	private final AntPathMatcher antPathMatcher = new AntPathMatcher();
+
+	private final ClassLoaderFiles classLoaderFiles;
+
+	ClassLoaderFilesResourcePatternResolver(ClassLoaderFiles classLoaderFiles) {
+		this.classLoaderFiles = classLoaderFiles;
+	}
+
+	@Override
+	public Resource getResource(String location) {
+		Resource candidate = this.delegate.getResource(location);
+		if (isExcludedResource(candidate)) {
+			return new DeletedClassLoaderFileResource(location);
+		}
+		return candidate;
+	}
+
+	@Override
+	public ClassLoader getClassLoader() {
+		return this.delegate.getClassLoader();
+	}
+
+	@Override
+	public Resource[] getResources(String locationPattern) throws IOException {
+		List<Resource> resources = new ArrayList<Resource>();
+		Resource[] candidates = this.delegate.getResources(locationPattern);
+		for (Resource candidate : candidates) {
+			if (!isExcludedResource(candidate)) {
+				resources.add(candidate);
+			}
+		}
+		resources.addAll(getAdditionalResources(locationPattern));
+		return resources.toArray(new Resource[resources.size()]);
+	}
+
+	private String trimLocationPattern(String locationPattern) {
+		for (String prefix : LOCATION_PATTERN_PREFIXES) {
+			if (locationPattern.startsWith(prefix)) {
+				return locationPattern.substring(prefix.length());
+			}
+		}
+		return locationPattern;
+	}
+
+	private List<Resource> getAdditionalResources(String locationPattern)
+			throws MalformedURLException {
+		List<Resource> additionalResources = new ArrayList<Resource>();
+		String trimmedLocationPattern = trimLocationPattern(locationPattern);
+		for (SourceFolder sourceFolder : this.classLoaderFiles.getSourceFolders()) {
+			for (Entry<String, ClassLoaderFile> entry : sourceFolder.getFilesEntrySet()) {
+				if (entry.getValue().getKind() == Kind.ADDED && this.antPathMatcher
+						.match(trimmedLocationPattern, entry.getKey())) {
+					additionalResources.add(new UrlResource(new URL("reloaded", null, -1,
+							"/" + entry.getKey(),
+							new ClassLoaderFileURLStreamHandler(entry.getValue()))));
+				}
+			}
+		}
+		return additionalResources;
+	}
+
+	private boolean isExcludedResource(Resource resource) {
+		for (SourceFolder sourceFolder : this.classLoaderFiles.getSourceFolders()) {
+			for (Entry<String, ClassLoaderFile> entry : sourceFolder.getFilesEntrySet()) {
+				try {
+					if (entry.getValue().getKind() == Kind.DELETED && resource.exists()
+							&& resource.getURI().toString().endsWith(entry.getKey())) {
+						return true;
+					}
+				}
+				catch (IOException ex) {
+					throw new IllegalStateException(
+							"Failed to retrieve URI from '" + resource + "'", ex);
+				}
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * A {@link Resource} that represents a {@link ClassLoaderFile} that has been
+	 * {@link Kind#DELETED deleted}.
+	 *
+	 * @author Andy Wilkinson
+	 */
+	private final class DeletedClassLoaderFileResource extends AbstractResource {
+
+		private final String name;
+
+		private DeletedClassLoaderFileResource(String name) {
+			this.name = name;
+		}
+
+		@Override
+		public boolean exists() {
+			return false;
+		}
+
+		@Override
+		public String getDescription() {
+			return "Deleted: " + this.name;
+		}
+
+		@Override
+		public InputStream getInputStream() throws IOException {
+			throw new IOException(this.name + " has been deleted");
+		}
+	}
+}

spring-boot-devtools/src/main/java/org/springframework/boot/devtools/restart/Restarter.java

@@ -49,6 +49,7 @@ import org.springframework.boot.devtools.restart.classloader.RestartClassLoader;
 import org.springframework.boot.logging.DeferredLog;
 import org.springframework.cglib.core.ClassNameReader;
 import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.context.support.GenericApplicationContext;
 import org.springframework.core.ResolvableType;
 import org.springframework.core.annotation.AnnotationUtils;
 import org.springframework.util.Assert;
@@ -419,6 +420,10 @@ public class Restarter {
 		if (applicationContext != null && applicationContext.getParent() != null) {
 			return;
 		}
+		if (applicationContext instanceof GenericApplicationContext) {
+			((GenericApplicationContext) applicationContext).setResourceLoader(
+					new ClassLoaderFilesResourcePatternResolver(this.classLoaderFiles));
+		}
 		this.rootContexts.add(applicationContext);
 	}
 

spring-boot-devtools/src/main/java/org/springframework/boot/devtools/restart/classloader/ClassLoaderFileURLStreamHandler.java

@@ -28,11 +28,11 @@ import java.net.URLStreamHandler;
  *
  * @author Phillip Webb
  */
-class ClassLoaderFileURLStreamHandler extends URLStreamHandler {
+public class ClassLoaderFileURLStreamHandler extends URLStreamHandler {
 
 	private ClassLoaderFile file;
 
-	ClassLoaderFileURLStreamHandler(ClassLoaderFile file) {
+	public ClassLoaderFileURLStreamHandler(ClassLoaderFile file) {
 		this.file = file;
 	}
 

spring-boot-integration-tests/pom.xml

@@ -21,6 +21,7 @@
 		<java.version>1.8</java.version>
 	</properties>
 	<modules>
+		<module>spring-boot-devtools-tests</module>
 		<module>spring-boot-gradle-tests</module>
 		<module>spring-boot-launch-script-tests</module>
 		<module>spring-boot-security-tests</module>

spring-boot-integration-tests/spring-boot-devtools-tests/pom.xml

@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-integration-tests</artifactId>
+		<version>1.5.0.BUILD-SNAPSHOT</version>
+	</parent>
+	<artifactId>spring-boot-devtools-tests</artifactId>
+	<name>Spring Boot DevTools Tests</name>
+	<description>${project.name}</description>
+	<url>http://projects.spring.io/spring-boot/</url>
+	<organization>
+		<name>Pivotal Software, Inc.</name>
+		<url>http://www.spring.io</url>
+	</organization>
+	<properties>
+		<main.basedir>${basedir}/../..</main.basedir>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-devtools</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>net.bytebuddy</groupId>
+			<artifactId>byte-buddy</artifactId>
+		</dependency>
+	</dependencies>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-dependency-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>copy-dependencies</id>
+						<phase>process-test-resources</phase>
+						<goals>
+							<goal>copy-dependencies</goal>
+						</goals>
+						<configuration>
+							<includeScope>runtime</includeScope>
+							<outputDirectory>${project.build.directory}/dependencies</outputDirectory>
+							<overWriteSnapshots>true</overWriteSnapshots>
+							<overWriteIfNewer>true</overWriteIfNewer>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+		<pluginManagement>
+			<plugins>
+				<plugin>
+					<groupId>org.eclipse.m2e</groupId>
+					<artifactId>lifecycle-mapping</artifactId>
+					<version>1.0.0</version>
+					<configuration>
+						<lifecycleMappingMetadata>
+							<pluginExecutions>
+								<pluginExecution>
+									<pluginExecutionFilter>
+										<groupId>org.apache.maven.plugins</groupId>
+										<artifactId>maven-dependency-plugin</artifactId>
+										<versionRange>[2.10,)</versionRange>
+										<goals>
+											<goal>copy-dependencies</goal>
+										</goals>
+									</pluginExecutionFilter>
+									<action>
+										<ignore></ignore>
+									</action>
+								</pluginExecution>
+							</pluginExecutions>
+						</lifecycleMappingMetadata>
+					</configuration>
+				</plugin>
+			</plugins>
+		</pluginManagement>
+	</build>
+</project>

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/com/example/ControllerOne.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2016 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 com.example;
+
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class ControllerOne {
+
+	@RequestMapping("/one")
+	public String one() {
+		return "one";
+	}
+
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/com/example/DevToolsTestApplication.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2012-2016 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 com.example;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.system.EmbeddedServerPortFileWriter;
+
+@SpringBootApplication
+public class DevToolsTestApplication {
+
+	public static void main(String[] args) {
+		new SpringApplicationBuilder(DevToolsTestApplication.class)
+				.listeners(new EmbeddedServerPortFileWriter("target/server.port"))
+				.run(args);
+	}
+
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/org/springframework/boot/devtools/tests/ApplicationLauncher.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.tests;
+
+/**
+ * Launches an application with DevTools.
+ *
+ * @author Andy Wilkinson
+ */
+public interface ApplicationLauncher {
+
+	LaunchedApplication launchApplication(JavaLauncher javaLauncher) throws Exception;
+
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/org/springframework/boot/devtools/tests/DevToolsIntegrationTests.java

@@ -0,0 +1,191 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.tests;
+
+import java.io.File;
+import java.io.FileReader;
+import java.util.ArrayList;
+import java.util.List;
+
+import net.bytebuddy.ByteBuddy;
+import net.bytebuddy.description.annotation.AnnotationDescription;
+import net.bytebuddy.description.modifier.Visibility;
+import net.bytebuddy.dynamic.DynamicType.Builder;
+import net.bytebuddy.implementation.FixedValue;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameters;
+
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.HttpStatus;
+import org.springframework.util.FileCopyUtils;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for DevTools.
+ *
+ * @author Andy Wilkinson
+ */
+@RunWith(Parameterized.class)
+public class DevToolsIntegrationTests {
+
+	private LaunchedApplication launchedApplication;
+
+	private final File serverPortFile = new File("target/server.port");
+
+	private final ApplicationLauncher applicationLauncher;
+
+	@Rule
+	public JavaLauncher javaLauncher = new JavaLauncher();
+
+	@Parameters(name = "{0}")
+	public static Object[] parameters() {
+		return new Object[] { new Object[] { new LocalApplicationLauncher() },
+				new Object[] { new ExplodedRemoteApplicationLauncher() },
+				new Object[] { new JarFileRemoteApplicationLauncher() } };
+	}
+
+	public DevToolsIntegrationTests(ApplicationLauncher applicationLauncher) {
+		this.applicationLauncher = applicationLauncher;
+	}
+
+	@Before
+	public void launchApplication() throws Exception {
+		this.serverPortFile.delete();
+		this.launchedApplication = this.applicationLauncher
+				.launchApplication(this.javaLauncher);
+	}
+
+	@After
+	public void stopApplication() {
+		this.launchedApplication.stop();
+	}
+
+	@Test
+	public void addARequestMappingToAnExistingController() throws Exception {
+		TestRestTemplate template = new TestRestTemplate();
+		String urlBase = "http://localhost:" + awaitServerPort() + "/";
+		assertThat(template.getForObject(urlBase + "/one", String.class))
+				.isEqualTo("one");
+		assertThat(template.getForEntity(urlBase + "/two", String.class).getStatusCode())
+				.isEqualTo(HttpStatus.NOT_FOUND);
+		controller("com.example.ControllerOne").withRequestMapping("one")
+				.withRequestMapping("two").build();
+		assertThat(template.getForObject(urlBase + "/one", String.class))
+				.isEqualTo("one");
+		assertThat(template.getForObject("http://localhost:" + awaitServerPort() + "/two",
+				String.class)).isEqualTo("two");
+	}
+
+	@Test
+	public void removeARequestMappingFromAnExistingController() throws Exception {
+		TestRestTemplate template = new TestRestTemplate();
+		assertThat(template.getForObject("http://localhost:" + awaitServerPort() + "/one",
+				String.class)).isEqualTo("one");
+		controller("com.example.ControllerOne").build();
+		assertThat(template.getForEntity("http://localhost:" + awaitServerPort() + "/one",
+				String.class).getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
+
+	}
+
+	@Test
+	public void createAController() throws Exception {
+		TestRestTemplate template = new TestRestTemplate();
+		String urlBase = "http://localhost:" + awaitServerPort() + "/";
+		assertThat(template.getForObject(urlBase + "/one", String.class))
+				.isEqualTo("one");
+		assertThat(template.getForEntity(urlBase + "/two", String.class).getStatusCode())
+				.isEqualTo(HttpStatus.NOT_FOUND);
+		controller("com.example.ControllerTwo").withRequestMapping("two").build();
+		assertThat(template.getForObject(urlBase + "/one", String.class))
+				.isEqualTo("one");
+		assertThat(template.getForObject("http://localhost:" + awaitServerPort() + "/two",
+				String.class)).isEqualTo("two");
+
+	}
+
+	@Test
+	public void deleteAController() throws Exception {
+		TestRestTemplate template = new TestRestTemplate();
+		assertThat(template.getForObject("http://localhost:" + awaitServerPort() + "/one",
+				String.class)).isEqualTo("one");
+		assertThat(new File(this.launchedApplication.getClassesDirectory(),
+				"com/example/ControllerOne.class").delete()).isTrue();
+		assertThat(template.getForEntity("http://localhost:" + awaitServerPort() + "/one",
+				String.class).getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
+
+	}
+
+	private int awaitServerPort() throws Exception {
+		long end = System.currentTimeMillis() + 20000;
+		while (!this.serverPortFile.exists()) {
+			if (System.currentTimeMillis() > end) {
+				throw new IllegalStateException(
+						"server.port file was not written within 20 seconds");
+			}
+			Thread.sleep(100);
+		}
+		int port = Integer
+				.valueOf(FileCopyUtils.copyToString(new FileReader(this.serverPortFile)));
+		this.serverPortFile.delete();
+		return port;
+	}
+
+	private ControllerBuilder controller(String name) {
+		return new ControllerBuilder(name,
+				this.launchedApplication.getClassesDirectory());
+	}
+
+	private static final class ControllerBuilder {
+
+		private final List<String> mappings = new ArrayList<String>();
+
+		private final String name;
+
+		private final File classesDirectory;
+
+		private ControllerBuilder(String name, File classesDirectory) {
+			this.name = name;
+			this.classesDirectory = classesDirectory;
+		}
+
+		public ControllerBuilder withRequestMapping(String mapping) {
+			this.mappings.add(mapping);
+			return this;
+		}
+
+		public void build() throws Exception {
+			Builder<Object> builder = new ByteBuddy().subclass(Object.class)
+					.name(this.name).annotateType(AnnotationDescription.Builder
+							.ofType(RestController.class).build());
+			for (String mapping : this.mappings) {
+				builder = builder.defineMethod(mapping, String.class, Visibility.PUBLIC)
+						.intercept(FixedValue.value(mapping)).annotateMethod(
+								AnnotationDescription.Builder.ofType(RequestMapping.class)
+										.defineArray("value", mapping).build());
+			}
+			builder.make().saveIn(this.classesDirectory);
+		}
+	}
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/org/springframework/boot/devtools/tests/ExplodedRemoteApplicationLauncher.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.tests;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.util.FileSystemUtils;
+import org.springframework.util.StringUtils;
+
+/**
+ * {@link ApplicationLauncher} that launches a remote application with its classes
+ * available directly on the file system.
+ *
+ * @author Andy Wilkinson
+ */
+public class ExplodedRemoteApplicationLauncher extends RemoteApplicationLauncher {
+
+	@Override
+	protected String createApplicationClassPath() throws Exception {
+		File appDirectory = new File("target/app");
+		FileSystemUtils.deleteRecursively(appDirectory);
+		appDirectory.mkdirs();
+		FileSystemUtils.copyRecursively(new File("target/test-classes/com"),
+				new File("target/app/com"));
+		List<String> entries = new ArrayList<String>();
+		entries.add("target/app");
+		for (File jar : new File("target/dependencies").listFiles()) {
+			entries.add(jar.getAbsolutePath());
+		}
+		return StringUtils.collectionToDelimitedString(entries, File.pathSeparator);
+	}
+
+	@Override
+	public String toString() {
+		return "exploded remote";
+	}
+
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/org/springframework/boot/devtools/tests/JarFileRemoteApplicationLauncher.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.tests;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.jar.Attributes;
+import java.util.jar.JarOutputStream;
+import java.util.jar.Manifest;
+import java.util.zip.ZipEntry;
+
+import org.springframework.util.FileSystemUtils;
+import org.springframework.util.StreamUtils;
+import org.springframework.util.StringUtils;
+
+/**
+ * {@link ApplicationLauncher} that launches a remote application with its classes in a
+ * jar file.
+ *
+ * @author Andy Wilkinson
+ */
+public class JarFileRemoteApplicationLauncher extends RemoteApplicationLauncher {
+
+	@Override
+	protected String createApplicationClassPath() throws Exception {
+		File appDirectory = new File("target/app");
+		FileSystemUtils.deleteRecursively(appDirectory);
+		appDirectory.mkdirs();
+		Manifest manifest = new Manifest();
+		manifest.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
+		JarOutputStream output = new JarOutputStream(
+				new FileOutputStream(new File(appDirectory, "app.jar")), manifest);
+		FileSystemUtils.copyRecursively(new File("target/test-classes/com"),
+				new File("target/app/com"));
+		addToJar(output, new File("target/app/"), new File("target/app/"));
+		output.close();
+		List<String> entries = new ArrayList<String>();
+		entries.add("target/app/app.jar");
+		for (File jar : new File("target/dependencies").listFiles()) {
+			entries.add(jar.getAbsolutePath());
+		}
+		String classpath = StringUtils.collectionToDelimitedString(entries,
+				File.pathSeparator);
+		return classpath;
+	}
+
+	private void addToJar(JarOutputStream output, File root, File current)
+			throws IOException {
+		for (File file : current.listFiles()) {
+			if (file.isDirectory()) {
+				addToJar(output, root, file);
+			}
+			output.putNextEntry(new ZipEntry(
+					file.getAbsolutePath().substring(root.getAbsolutePath().length() + 1)
+							+ (file.isDirectory() ? "/" : "")));
+			if (file.isFile()) {
+				StreamUtils.copy(new FileInputStream(file), output);
+			}
+			output.closeEntry();
+		}
+	}
+
+	@Override
+	public String toString() {
+		return "jar file remote";
+	}
+
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/org/springframework/boot/devtools/tests/JavaLauncher.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.tests;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+/**
+ * @author awilkinson
+ */
+public class JavaLauncher implements TestRule {
+
+	private File outputDirectory;
+
+	@Override
+	public Statement apply(Statement base, Description description) {
+		this.outputDirectory = new File("target/output/" + "/"
+				+ description.getMethodName().replaceAll("[^A-Za-z]+", ""));
+		this.outputDirectory.mkdirs();
+		return base;
+	}
+
+	Process launch(String name, String classpath, String... args) throws IOException {
+		List<String> command = new ArrayList<String>(Arrays
+				.asList(System.getProperty("java.home") + "/bin/java", "-cp", classpath));
+		command.addAll(Arrays.asList(args));
+		return new ProcessBuilder(command.toArray(new String[command.size()]))
+				.redirectError(new File(this.outputDirectory, name + ".err"))
+				.redirectOutput(new File(this.outputDirectory, name + ".out")).start();
+	}
+
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/org/springframework/boot/devtools/tests/LaunchedApplication.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.tests;
+
+import java.io.File;
+
+/**
+ * An application launched by {@link ApplicationLauncher}.
+ *
+ * @author Andy Wilkinson
+ */
+class LaunchedApplication {
+
+	private final File classesDirectory;
+
+	private final Process[] processes;
+
+	LaunchedApplication(File classesDirectory, Process... processes) {
+		this.classesDirectory = classesDirectory;
+		this.processes = processes;
+	}
+
+	void stop() {
+		for (Process process : this.processes) {
+			process.destroy();
+		}
+	}
+
+	File getClassesDirectory() {
+		return this.classesDirectory;
+	}
+
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/org/springframework/boot/devtools/tests/LocalApplicationLauncher.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.tests;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.util.FileSystemUtils;
+import org.springframework.util.StringUtils;
+
+/**
+ * {@link ApplicationLauncher} that launches a local application with DevTools enabled.
+ *
+ * @author Andy Wilkinson
+ */
+public class LocalApplicationLauncher implements ApplicationLauncher {
+
+	@Override
+	public LaunchedApplication launchApplication(JavaLauncher javaLauncher)
+			throws Exception {
+		Process process = javaLauncher.launch("local", createApplicationClassPath(),
+				"com.example.DevToolsTestApplication", "--server.port=0");
+		return new LaunchedApplication(new File("target/app"), process);
+	}
+
+	protected String createApplicationClassPath() throws Exception {
+		File appDirectory = new File("target/app");
+		FileSystemUtils.deleteRecursively(appDirectory);
+		appDirectory.mkdirs();
+		FileSystemUtils.copyRecursively(new File("target/test-classes/com"),
+				new File("target/app/com"));
+		List<String> entries = new ArrayList<String>();
+		entries.add("target/app");
+		for (File jar : new File("target/dependencies").listFiles()) {
+			entries.add(jar.getAbsolutePath());
+		}
+		return StringUtils.collectionToDelimitedString(entries, File.pathSeparator);
+	}
+
+	@Override
+	public String toString() {
+		return "local";
+	}
+
+}

spring-boot-integration-tests/spring-boot-devtools-tests/src/test/java/org/springframework/boot/devtools/tests/RemoteApplicationLauncher.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2012-2016 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.boot.devtools.tests;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.boot.devtools.RemoteSpringApplication;
+import org.springframework.util.FileSystemUtils;
+import org.springframework.util.SocketUtils;
+import org.springframework.util.StringUtils;
+
+/**
+ * Base class for {@link ApplicationLauncher} implementations that use
+ * {@link RemoteSpringApplication}.
+ *
+ * @author Andy Wilkinson
+ */
+abstract class RemoteApplicationLauncher implements ApplicationLauncher {
+
+	@Override
+	public LaunchedApplication launchApplication(JavaLauncher javaLauncher)
+			throws Exception {
+		int port = SocketUtils.findAvailableTcpPort();
+		Process application = javaLauncher.launch("app", createApplicationClassPath(),
+				"com.example.DevToolsTestApplication", "--server.port=" + port,
+				"--spring.devtools.remote.secret=secret");
+		Process remoteSpringApplication = javaLauncher.launch("remote-spring-application",
+				createRemoteSpringApplicationClassPath(),
+				RemoteSpringApplication.class.getName(),
+				"--spring.devtools.remote.secret=secret", "http://localhost:" + port);
+		return new LaunchedApplication(new File("target/remote"), application,
+				remoteSpringApplication);
+	}
+
+	protected abstract String createApplicationClassPath() throws Exception;
+
+	private String createRemoteSpringApplicationClassPath() throws Exception {
+		File remoteDirectory = new File("target/remote");
+		FileSystemUtils.deleteRecursively(remoteDirectory);
+		remoteDirectory.mkdirs();
+		FileSystemUtils.copyRecursively(new File("target/test-classes/com"),
+				new File("target/remote/com"));
+		List<String> entries = new ArrayList<String>();
+		entries.add("target/remote");
+		for (File jar : new File("target/dependencies").listFiles()) {
+			entries.add(jar.getAbsolutePath());
+		}
+		return StringUtils.collectionToDelimitedString(entries, File.pathSeparator);
+	}
+
+}

spring-boot-parent/pom.xml

@@ -77,6 +77,11 @@
 				<artifactId>jline</artifactId>
 				<version>2.11</version>
 			</dependency>
+			<dependency>
+				<groupId>net.bytebuddy</groupId>
+				<artifactId>byte-buddy</artifactId>
+				<version>1.5.4</version>
+			</dependency>
 			<dependency>
 				<groupId>net.sf.jopt-simple</groupId>
 				<artifactId>jopt-simple</artifactId>

spring-boot-parent/src/checkstyle/checkstyle-suppressions.xml

@@ -6,6 +6,7 @@
 	<suppress files="SpringApplicationTests\.java" checks="FinalClass" />
 	<suppress files=".+Configuration\.java" checks="HideUtilityClassConstructor" />
 	<suppress files="LaunchScriptTestApplication\.java" checks="HideUtilityClassConstructor" />
+	<suppress files="DevToolsTestApplication\.java" checks="HideUtilityClassConstructor" />
 	<suppress files="SignalUtils\.java" checks="IllegalImport" />
 	<suppress files="[\\/]src[\\/]test[\\/]java[\\/]cli[\\/]command[\\/]" checks="ImportControl" />
 	<suppress files="[\\/]src[\\/]main[\\/]java[\\/]sample[\\/]" checks="ImportControl" />