Publish artifacts and, when Maven plugin used, customize upload task

See gh-1666

spring-boot-parent/pom.xml

@@ -224,6 +224,11 @@
 				<artifactId>gradle-language-jvm</artifactId>
 				<version>${gradle.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.gradle</groupId>
+				<artifactId>gradle-maven</artifactId>
+				<version>${gradle.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>org.gradle</groupId>
 				<artifactId>gradle-platform-jvm</artifactId>

spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/bundling/BundlingPluginFeatures.java

@@ -20,11 +20,14 @@ import java.util.concurrent.Callable;
 
 import org.gradle.api.Project;
 import org.gradle.api.artifacts.Configuration;
+import org.gradle.api.artifacts.maven.MavenResolver;
 import org.gradle.api.file.FileCollection;
+import org.gradle.api.internal.artifacts.publish.ArchivePublishArtifact;
 import org.gradle.api.plugins.JavaPlugin;
 import org.gradle.api.plugins.JavaPluginConvention;
 import org.gradle.api.plugins.WarPlugin;
 import org.gradle.api.tasks.SourceSet;
+import org.gradle.api.tasks.Upload;
 
 import org.springframework.boot.gradle.PluginFeatures;
 
@@ -35,17 +38,23 @@ import org.springframework.boot.gradle.PluginFeatures;
  */
 public class BundlingPluginFeatures implements PluginFeatures {
 
+	private SinglePublishedArtifact singlePublishedArtifact;
+
 	@Override
 	public void apply(Project project) {
+		this.singlePublishedArtifact = new SinglePublishedArtifact(
+				project.getConfigurations().create("bootArchives").getArtifacts());
 		project.getPlugins().withType(JavaPlugin.class,
 				(javaPlugin) -> configureBootJarTask(project));
 		project.getPlugins().withType(WarPlugin.class,
 				(warPlugin) -> configureBootWarTask(project));
+		project.afterEvaluate(this::configureBootArchivesUpload);
 	}
 
 	private void configureBootWarTask(Project project) {
 		BootWar bootWar = project.getTasks().create("bootWar", BootWar.class);
 		bootWar.providedClasspath(providedRuntimeConfiguration(project));
+		this.singlePublishedArtifact.addCandidate(new ArchivePublishArtifact(bootWar));
 	}
 
 	private void configureBootJarTask(Project project) {
@@ -57,6 +66,22 @@ public class BundlingPluginFeatures implements PluginFeatures {
 					.getByName(SourceSet.MAIN_SOURCE_SET_NAME);
 			return mainSourceSet.getRuntimeClasspath();
 		});
+		this.singlePublishedArtifact.addCandidate(new ArchivePublishArtifact(bootJar));
+	}
+
+	private void configureBootArchivesUpload(Project project) {
+		Upload upload = project.getTasks().withType(Upload.class)
+				.findByName("uploadBootArchives");
+		if (upload == null) {
+			return;
+		}
+		clearConfigurationMappings(upload);
+	}
+
+	private void clearConfigurationMappings(Upload upload) {
+		upload.getRepositories().withType(MavenResolver.class, (resolver) -> {
+			resolver.getPom().getScopeMappings().getMappings().clear();
+		});
 	}
 
 	private Configuration providedRuntimeConfiguration(Project project) {

spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/bundling/SinglePublishedArtifact.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2012-2017 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.boot.gradle.bundling;
+
+import org.gradle.api.artifacts.PublishArtifact;
+import org.gradle.api.artifacts.PublishArtifactSet;
+
+/**
+ * A wrapper for a {@PublishArtifactSet} that ensures that only a single artifact is
+ * published, with a war file taking precedence over a jar file.
+ *
+ * @author Andy Wilkinson
+ */
+class SinglePublishedArtifact {
+
+	private final PublishArtifactSet artifacts;
+
+	private PublishArtifact currentArtifact;
+
+	SinglePublishedArtifact(PublishArtifactSet artifacts) {
+		this.artifacts = artifacts;
+	}
+
+	void addCandidate(PublishArtifact candidate) {
+		if (this.currentArtifact == null || "war".equals(candidate.getExtension())) {
+			this.artifacts.clear();
+			this.artifacts.add(candidate);
+			this.currentArtifact = candidate;
+		}
+	}
+
+}

spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/bundling/MavenIntegrationTests.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2012-2017 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.boot.gradle.bundling;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+import org.gradle.testkit.runner.BuildResult;
+import org.gradle.testkit.runner.TaskOutcome;
+import org.junit.Rule;
+import org.junit.Test;
+
+import org.springframework.boot.gradle.testkit.GradleBuild;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for uploading Boot jars and wars using Gradle's Maven plugin.
+ *
+ * @author Andy Wilkinson
+ */
+public class MavenIntegrationTests {
+
+	@Rule
+	public final GradleBuild gradleBuild = new GradleBuild();
+
+	@Test
+	public void bootJarCanBeUploaded() throws FileNotFoundException, IOException {
+		BuildResult result = this.gradleBuild.build("uploadBootArchives");
+		assertThat(result.task(":uploadBootArchives").getOutcome())
+				.isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(artifactWithSuffix("jar")).isFile();
+		assertThat(artifactWithSuffix("pom")).is(pomWith().groupId("com.example")
+				.artifactId(this.gradleBuild.getProjectDir().getName()).version("1.0")
+				.noPackaging().noDependencies());
+	}
+
+	@Test
+	public void bootWarCanBeUploaded() throws IOException {
+		BuildResult result = this.gradleBuild.build("uploadBootArchives");
+		assertThat(result.task(":uploadBootArchives").getOutcome())
+				.isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(artifactWithSuffix("war")).isFile();
+		assertThat(artifactWithSuffix("pom")).is(pomWith().groupId("com.example")
+				.artifactId(this.gradleBuild.getProjectDir().getName()).version("1.0")
+				.packaging("war").noDependencies());
+	}
+
+	private File artifactWithSuffix(String suffix) {
+		String name = this.gradleBuild.getProjectDir().getName();
+		return new File(new File(this.gradleBuild.getProjectDir(), "build/repo"),
+				String.format("com/example/%s/1.0/%s-1.0.%s", name, name, suffix));
+	}
+
+	private PomCondition pomWith() {
+		return new PomCondition();
+	}
+
+}

spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/bundling/PomCondition.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright 2012-2017 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.boot.gradle.bundling;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.HashSet;
+import java.util.Set;
+
+import org.assertj.core.api.Condition;
+import org.assertj.core.description.Description;
+import org.assertj.core.description.TextDescription;
+
+import org.springframework.util.FileCopyUtils;
+
+/**
+ * AssertJ {@link Condition} for asserting the contents of a pom file.
+ *
+ * @author Andy Wilkinson
+ */
+class PomCondition extends Condition<File> {
+
+	private Set<String> expectedContents;
+
+	private Set<String> notExpectedContents;
+
+	PomCondition() {
+		this(new HashSet<String>(), new HashSet<String>());
+	}
+
+	private PomCondition(Set<String> expectedContents, Set<String> notExpectedContents) {
+		super(new TextDescription("Pom file containing %s and not containing %s",
+				expectedContents, notExpectedContents));
+		this.expectedContents = expectedContents;
+		this.notExpectedContents = notExpectedContents;
+	}
+
+	@Override
+	public boolean matches(File pom) {
+		try {
+			String contents = FileCopyUtils.copyToString(new FileReader(pom));
+			for (String expected : this.expectedContents) {
+				if (!contents.contains(expected)) {
+					return false;
+				}
+			}
+			for (String notExpected : this.notExpectedContents) {
+				if (contents.contains(notExpected)) {
+					return false;
+				}
+			}
+		}
+		catch (IOException ex) {
+			throw new RuntimeException(ex);
+		}
+		return true;
+	}
+
+	@Override
+	public Description description() {
+		return new TextDescription("Pom file containing %s and not containing %s",
+				this.expectedContents, this.notExpectedContents);
+	}
+
+	PomCondition groupId(String groupId) {
+		this.expectedContents.add(String.format("<groupId>%s</groupId>", groupId));
+		return this;
+	}
+
+	PomCondition artifactId(String artifactId) {
+		this.expectedContents
+				.add(String.format("<artifactId>%s</artifactId>", artifactId));
+		return this;
+	}
+
+	PomCondition version(String version) {
+		this.expectedContents.add(String.format("<version>%s</version>", version));
+		return this;
+	}
+
+	PomCondition packaging(String packaging) {
+		this.expectedContents.add(String.format("<packaging>%s</packaging>", packaging));
+		return this;
+	}
+
+	PomCondition noDependencies() {
+		this.notExpectedContents.add("<dependencies>");
+		return this;
+	}
+
+	PomCondition noPackaging() {
+		this.notExpectedContents.add("<packaging>");
+		return this;
+	}
+
+}

spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/testkit/GradleBuild.java

@@ -56,8 +56,7 @@ public class GradleBuild implements TestRule {
 
 	@Override
 	public Statement apply(Statement base, Description description) {
-		String name = description.getTestClass().getSimpleName() + ".gradle";
-		URL scriptUrl = description.getTestClass().getResource(name);
+		URL scriptUrl = findDefaultScript(description);
 		if (scriptUrl != null) {
 			script(scriptUrl.getFile());
 		}
@@ -77,6 +76,24 @@ public class GradleBuild implements TestRule {
 		}, description);
 	}
 
+	private URL findDefaultScript(Description description) {
+		URL scriptUrl = getScriptForTestMethod(description);
+		if (scriptUrl != null) {
+			return scriptUrl;
+		}
+		return getScriptForTestClass(description.getTestClass());
+	}
+
+	private URL getScriptForTestMethod(Description description) {
+		return description.getTestClass()
+				.getResource(description.getTestClass().getSimpleName() + "-"
+						+ description.getMethodName() + ".gradle");
+	}
+
+	private URL getScriptForTestClass(Class<?> testClass) {
+		return testClass.getResource(testClass.getSimpleName() + ".gradle");
+	}
+
 	private void before() throws IOException {
 		this.projectDir = this.temp.newFolder();
 	}
@@ -123,7 +140,15 @@ public class GradleBuild implements TestRule {
 		}
 	}
 
-	public static String getBootVersion() {
+	public File getProjectDir() {
+		return this.projectDir;
+	}
+
+	public void setProjectDir(File projectDir) {
+		this.projectDir = projectDir;
+	}
+
+	private static String getBootVersion() {
 		return evaluateExpression(
 				"/*[local-name()='project']/*[local-name()='parent']/*[local-name()='version']"
 						+ "/text()");

spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/bundling/MavenIntegrationTests-bootJarCanBeUploaded.gradle

@@ -0,0 +1,24 @@
+buildscript {
+	dependencies {
+		classpath files(pluginClasspath.split(','))
+	}
+}
+
+apply plugin: 'java'
+apply plugin: 'org.springframework.boot'
+apply plugin: 'maven'
+
+bootJar {
+	mainClass = 'com.example.Application'
+}
+
+group = 'com.example'
+version = '1.0'
+
+uploadBootArchives {
+	repositories {
+		mavenDeployer {
+		 	repository(url: "file:$buildDir/repo")
+		}
+	}
+}

spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/bundling/MavenIntegrationTests-bootWarCanBeUploaded.gradle

@@ -0,0 +1,24 @@
+buildscript {
+	dependencies {
+		classpath files(pluginClasspath.split(','))
+	}
+}
+
+apply plugin: 'war'
+apply plugin: 'org.springframework.boot'
+apply plugin: 'maven'
+
+bootWar {
+	mainClass = 'com.example.Application'
+}
+
+group = 'com.example'
+version = '1.0'
+
+uploadBootArchives {
+	repositories {
+		mavenDeployer {
+		 	repository(url: "file:$buildDir/repo")
+		}
+	}
+}