/
ScalaBasePlugin.java
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/
ScalaBasePlugin.java
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/*
* Copyright 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.gradle.api.plugins.scala;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableSet;
import org.codehaus.groovy.runtime.InvokerHelper;
import org.gradle.api.Action;
import org.gradle.api.Incubating;
import org.gradle.api.InvalidUserCodeException;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.Task;
import org.gradle.api.Transformer;
import org.gradle.api.artifacts.ArtifactView;
import org.gradle.api.artifacts.Configuration;
import org.gradle.api.artifacts.component.ComponentIdentifier;
import org.gradle.api.artifacts.component.ProjectComponentIdentifier;
import org.gradle.api.artifacts.dsl.DependencyHandler;
import org.gradle.api.attributes.AttributeDisambiguationRule;
import org.gradle.api.attributes.AttributeMatchingStrategy;
import org.gradle.api.attributes.MultipleCandidatesDetails;
import org.gradle.api.attributes.Usage;
import org.gradle.api.file.FileCollection;
import org.gradle.api.file.SourceDirectorySet;
import org.gradle.api.internal.artifacts.configurations.ConfigurationInternal;
import org.gradle.api.internal.tasks.DefaultScalaSourceSet;
import org.gradle.api.internal.tasks.scala.DefaultScalaPluginExtension;
import org.gradle.api.model.ObjectFactory;
import org.gradle.api.plugins.Convention;
import org.gradle.api.plugins.JavaBasePlugin;
import org.gradle.api.plugins.JavaPluginConvention;
import org.gradle.api.plugins.jvm.internal.JvmEcosystemUtilities;
import org.gradle.api.plugins.internal.JvmPluginsHelper;
import org.gradle.api.reporting.ReportingExtension;
import org.gradle.api.specs.Spec;
import org.gradle.api.tasks.ScalaRuntime;
import org.gradle.api.tasks.ScalaSourceSet;
import org.gradle.api.tasks.SourceSet;
import org.gradle.api.tasks.TaskProvider;
import org.gradle.api.tasks.compile.CompileOptions;
import org.gradle.api.tasks.scala.IncrementalCompileOptions;
import org.gradle.api.tasks.scala.ScalaCompile;
import org.gradle.api.tasks.scala.ScalaDoc;
import org.gradle.internal.logging.util.Log4jBannedVersion;
import org.gradle.jvm.tasks.Jar;
import org.gradle.language.scala.internal.toolchain.DefaultScalaToolProvider;
import javax.inject.Inject;
import java.io.File;
import java.util.concurrent.Callable;
import static org.gradle.api.attributes.Usage.USAGE_ATTRIBUTE;
import static org.gradle.api.internal.lambdas.SerializableLambdas.spec;
/**
* <p>A {@link Plugin} which compiles and tests Scala sources.</p>
*/
public class ScalaBasePlugin implements Plugin<Project> {
/**
* Default Scala Zinc compiler version
*
* @since 6.0
*/
public static final String DEFAULT_ZINC_VERSION = DefaultScalaToolProvider.DEFAULT_ZINC_VERSION;
private static final String DEFAULT_SCALA_ZINC_VERSION = "2.12";
@VisibleForTesting
public static final String ZINC_CONFIGURATION_NAME = "zinc";
public static final String SCALA_RUNTIME_EXTENSION_NAME = "scalaRuntime";
/**
* Configuration for scala compiler plugins.
*
* @since 6.4
*/
@Incubating
public static final String SCALA_COMPILER_PLUGINS_CONFIGURATION_NAME = "scalaCompilerPlugins";
private final ObjectFactory objectFactory;
private final JvmEcosystemUtilities jvmEcosystemUtilities;
@Inject
public ScalaBasePlugin(ObjectFactory objectFactory, JvmEcosystemUtilities jvmEcosystemUtilities) {
this.objectFactory = objectFactory;
this.jvmEcosystemUtilities = jvmEcosystemUtilities;
}
@Override
public void apply(final Project project) {
project.getPluginManager().apply(JavaBasePlugin.class);
ScalaRuntime scalaRuntime = project.getExtensions().create(SCALA_RUNTIME_EXTENSION_NAME, ScalaRuntime.class, project);
ScalaPluginExtension scalaPluginExtension = project.getExtensions().create(ScalaPluginExtension.class, "scala", DefaultScalaPluginExtension.class);
Usage incrementalAnalysisUsage = objectFactory.named(Usage.class, "incremental-analysis");
configureConfigurations(project, incrementalAnalysisUsage, scalaPluginExtension);
configureCompileDefaults(project, scalaRuntime);
configureSourceSetDefaults(project, incrementalAnalysisUsage, objectFactory);
configureScaladoc(project, scalaRuntime);
}
private void configureConfigurations(final Project project, final Usage incrementalAnalysisUsage, ScalaPluginExtension scalaPluginExtension) {
DependencyHandler dependencyHandler = project.getDependencies();
ConfigurationInternal plugins = (ConfigurationInternal) project.getConfigurations().create(SCALA_COMPILER_PLUGINS_CONFIGURATION_NAME);
plugins.setTransitive(false);
plugins.setCanBeConsumed(false);
jvmEcosystemUtilities.configureAsRuntimeClasspath(plugins);
Configuration zinc = project.getConfigurations().create(ZINC_CONFIGURATION_NAME);
zinc.setVisible(false);
zinc.setDescription("The Zinc incremental compiler to be used for this Scala project.");
zinc.getResolutionStrategy().eachDependency(rule -> {
if (rule.getRequested().getGroup().equals("com.typesafe.zinc") && rule.getRequested().getName().equals("zinc")) {
rule.useTarget("org.scala-sbt:zinc_" + DEFAULT_SCALA_ZINC_VERSION + ":" + DEFAULT_ZINC_VERSION);
rule.because("Typesafe Zinc is no longer maintained.");
}
});
zinc.defaultDependencies(dependencies -> {
dependencies.add(dependencyHandler.create("org.scala-sbt:zinc_" + DEFAULT_SCALA_ZINC_VERSION + ":" + scalaPluginExtension.getZincVersion().get()));
// Add safeguard and clear error if the user changed the scala version when using default zinc
zinc.getIncoming().afterResolve(resolvableDependencies -> {
resolvableDependencies.getResolutionResult().allComponents(component -> {
if (component.getModuleVersion() != null && component.getModuleVersion().getName().equals("scala-library")) {
if (!component.getModuleVersion().getVersion().startsWith(DEFAULT_SCALA_ZINC_VERSION)) {
throw new InvalidUserCodeException("The version of 'scala-library' was changed while using the default Zinc version. " +
"Version " + component.getModuleVersion().getVersion() + " is not compatible with org.scala-sbt:zinc_" + DEFAULT_SCALA_ZINC_VERSION + ":" + DEFAULT_ZINC_VERSION);
}
}
});
});
});
zinc.getDependencyConstraints().add(dependencyHandler.getConstraints().create(Log4jBannedVersion.LOG4J2_CORE_COORDINATES, constraint -> constraint.version(version -> {
version.require(Log4jBannedVersion.LOG4J2_CORE_REQUIRED_VERSION);
version.reject(Log4jBannedVersion.LOG4J2_CORE_VULNERABLE_VERSION_RANGE);
})));
final Configuration incrementalAnalysisElements = project.getConfigurations().create("incrementalScalaAnalysisElements");
incrementalAnalysisElements.setVisible(false);
incrementalAnalysisElements.setDescription("Incremental compilation analysis files");
incrementalAnalysisElements.setCanBeResolved(false);
incrementalAnalysisElements.setCanBeConsumed(true);
incrementalAnalysisElements.getAttributes().attribute(USAGE_ATTRIBUTE, incrementalAnalysisUsage);
AttributeMatchingStrategy<Usage> matchingStrategy = dependencyHandler.getAttributesSchema().attribute(USAGE_ATTRIBUTE);
matchingStrategy.getDisambiguationRules().add(UsageDisambiguationRules.class, actionConfiguration -> {
actionConfiguration.params(incrementalAnalysisUsage);
actionConfiguration.params(objectFactory.named(Usage.class, Usage.JAVA_API));
actionConfiguration.params(objectFactory.named(Usage.class, Usage.JAVA_RUNTIME));
});
}
private static void configureSourceSetDefaults(final Project project, final Usage incrementalAnalysisUsage, final ObjectFactory objectFactory) {
project.getConvention().getPlugin(JavaPluginConvention.class).getSourceSets().all(new Action<SourceSet>() {
@Override
public void execute(final SourceSet sourceSet) {
String displayName = (String) InvokerHelper.invokeMethod(sourceSet, "getDisplayName", null);
Convention sourceSetConvention = (Convention) InvokerHelper.getProperty(sourceSet, "convention");
DefaultScalaSourceSet scalaSourceSet = new DefaultScalaSourceSet(displayName, objectFactory);
sourceSetConvention.getPlugins().put("scala", scalaSourceSet);
final SourceDirectorySet scalaDirectorySet = scalaSourceSet.getScala();
scalaDirectorySet.srcDir(project.file("src/" + sourceSet.getName() + "/scala"));
sourceSet.getAllJava().source(scalaDirectorySet);
sourceSet.getAllSource().source(scalaDirectorySet);
// Explicitly capture only a FileCollection in the lambda below for compatibility with configuration-cache.
FileCollection scalaSource = scalaDirectorySet;
sourceSet.getResources().getFilter().exclude(
spec(element -> scalaSource.contains(element.getFile()))
);
Configuration classpath = project.getConfigurations().getByName(sourceSet.getImplementationConfigurationName());
Configuration incrementalAnalysis = project.getConfigurations().create("incrementalScalaAnalysisFor" + sourceSet.getName());
incrementalAnalysis.setVisible(false);
incrementalAnalysis.setDescription("Incremental compilation analysis files for " + displayName);
incrementalAnalysis.setCanBeResolved(true);
incrementalAnalysis.setCanBeConsumed(false);
incrementalAnalysis.extendsFrom(classpath);
incrementalAnalysis.getAttributes().attribute(USAGE_ATTRIBUTE, incrementalAnalysisUsage);
configureScalaCompile(project, sourceSet, incrementalAnalysis, incrementalAnalysisUsage);
}
});
}
private static void configureScalaCompile(final Project project, final SourceSet sourceSet, final Configuration incrementalAnalysis, final Usage incrementalAnalysisUsage) {
Convention scalaConvention = (Convention) InvokerHelper.getProperty(sourceSet, "convention");
final ScalaSourceSet scalaSourceSet = scalaConvention.findPlugin(ScalaSourceSet.class);
final TaskProvider<ScalaCompile> scalaCompile = project.getTasks().register(sourceSet.getCompileTaskName("scala"), ScalaCompile.class, new Action<ScalaCompile>() {
@Override
public void execute(ScalaCompile scalaCompile) {
JvmPluginsHelper.configureForSourceSet(sourceSet, scalaSourceSet.getScala(), scalaCompile, scalaCompile.getOptions(), project);
scalaCompile.setDescription("Compiles the " + scalaSourceSet.getScala() + ".");
scalaCompile.setSource(scalaSourceSet.getScala());
scalaCompile.getAnalysisMappingFile().set(project.getLayout().getBuildDirectory().file("tmp/scala/compilerAnalysis/" + scalaCompile.getName() + ".mapping"));
// cannot compute at task execution time because we need association with source set
IncrementalCompileOptions incrementalOptions = scalaCompile.getScalaCompileOptions().getIncrementalOptions();
incrementalOptions.getAnalysisFile().set(
project.getLayout().getBuildDirectory().file("tmp/scala/compilerAnalysis/" + scalaCompile.getName() + ".analysis")
);
incrementalOptions.getClassfileBackupDir().set(
project.getLayout().getBuildDirectory().file("tmp/scala/classfileBackup/" + scalaCompile.getName() + ".bak")
);
final Jar jarTask = (Jar) project.getTasks().findByName(sourceSet.getJarTaskName());
if (jarTask != null) {
incrementalOptions.getPublishedCode().set(jarTask.getArchiveFile());
}
scalaCompile.getAnalysisFiles().from(incrementalAnalysis.getIncoming().artifactView(new Action<ArtifactView.ViewConfiguration>() {
@Override
public void execute(ArtifactView.ViewConfiguration viewConfiguration) {
viewConfiguration.lenient(true);
viewConfiguration.componentFilter(new IsProjectComponent());
}
}).getFiles());
// See https://github.com/gradle/gradle/issues/14434. We do this so that the incrementalScalaAnalysisForXXX configuration
// is resolved during task graph calculation. It is not an input, but if we leave it to be resolved during task execution,
// it can potentially block trying to resolve project dependencies.
scalaCompile.dependsOn(scalaCompile.getAnalysisFiles());
}
});
JvmPluginsHelper.configureOutputDirectoryForSourceSet(sourceSet, scalaSourceSet.getScala(), project, scalaCompile, scalaCompile.map(new Transformer<CompileOptions, ScalaCompile>() {
@Override
public CompileOptions transform(ScalaCompile scalaCompile) {
return scalaCompile.getOptions();
}
}));
project.getTasks().named(sourceSet.getClassesTaskName(), new Action<Task>() {
@Override
public void execute(Task task) {
task.dependsOn(scalaCompile);
}
});
}
private static void configureCompileDefaults(final Project project, final ScalaRuntime scalaRuntime) {
project.getTasks().withType(ScalaCompile.class).configureEach(new Action<ScalaCompile>() {
@Override
public void execute(final ScalaCompile compile) {
compile.getConventionMapping().map("scalaClasspath", new Callable<FileCollection>() {
@Override
public FileCollection call() throws Exception {
return scalaRuntime.inferScalaClasspath(compile.getClasspath());
}
});
compile.getConventionMapping().map("zincClasspath", new Callable<Configuration>() {
@Override
public Configuration call() throws Exception {
return project.getConfigurations().getAt(ZINC_CONFIGURATION_NAME);
}
});
compile.getConventionMapping().map("scalaCompilerPlugins", new Callable<FileCollection>() {
@Override
public FileCollection call() throws Exception {
return project.getConfigurations().getAt(SCALA_COMPILER_PLUGINS_CONFIGURATION_NAME);
}
});
}
});
}
private static void configureScaladoc(final Project project, final ScalaRuntime scalaRuntime) {
project.getTasks().withType(ScalaDoc.class).configureEach(new Action<ScalaDoc>() {
@Override
public void execute(final ScalaDoc scalaDoc) {
scalaDoc.getConventionMapping().map("destinationDir", new Callable<File>() {
@Override
public File call() throws Exception {
File docsDir = project.getConvention().getPlugin(JavaPluginConvention.class).getDocsDir();
return project.file(docsDir.getPath() + "/scaladoc");
}
});
scalaDoc.getConventionMapping().map("title", new Callable<String>() {
@Override
public String call() throws Exception {
return project.getExtensions().getByType(ReportingExtension.class).getApiDocTitle();
}
});
scalaDoc.getConventionMapping().map("scalaClasspath", new Callable<FileCollection>() {
@Override
public FileCollection call() throws Exception {
return scalaRuntime.inferScalaClasspath(scalaDoc.getClasspath());
}
});
}
});
}
static class UsageDisambiguationRules implements AttributeDisambiguationRule<Usage> {
private final ImmutableSet<Usage> expectedUsages;
private final Usage javaRuntime;
@Inject
UsageDisambiguationRules(Usage incrementalAnalysis, Usage javaApi, Usage javaRuntime) {
this.javaRuntime = javaRuntime;
this.expectedUsages = ImmutableSet.of(incrementalAnalysis, javaApi, javaRuntime);
}
@Override
public void execute(MultipleCandidatesDetails<Usage> details) {
if (details.getConsumerValue() == null) {
if (details.getCandidateValues().equals(expectedUsages)) {
details.closestMatch(javaRuntime);
}
}
}
}
private static class IsProjectComponent implements Spec<ComponentIdentifier> {
@Override
public boolean isSatisfiedBy(ComponentIdentifier element) {
return element instanceof ProjectComponentIdentifier;
}
}
}