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wilkinsonaphilwebb
wilkinsona
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philwebb
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Improve checking of auto-configuration
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+575
-86
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5 files changed

+575
-86
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‎buildSrc/src/main/java/org/springframework/boot/build/autoconfigure/AutoConfigurationClass.java

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/*
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* Copyright 2025 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.build.autoconfigure;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.UncheckedIOException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Objects;
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import java.util.Set;
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import org.springframework.asm.AnnotationVisitor;
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import org.springframework.asm.ClassReader;
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import org.springframework.asm.ClassVisitor;
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import org.springframework.asm.SpringAsmInfo;
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import org.springframework.asm.Type;
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/**
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* An {@code @AutoConfiguration} class.
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*
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* @param name name of the auto-configuration class
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* @param before values of the {@code before} attribute
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* @param beforeName values of the {@code beforeName} attribute
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* @param after values of the {@code after} attribute
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* @param afterName values of the {@code afterName} attribute
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* @author Andy Wilkinson
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*/
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public record AutoConfigurationClass(String name, List<String> before, List<String> beforeName, List<String> after,
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List<String> afterName) {
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private AutoConfigurationClass(String name, Map<String, List<String>> attributes) {
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this(name, attributes.getOrDefault("before", Collections.emptyList()),
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attributes.getOrDefault("beforeName", Collections.emptyList()),
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attributes.getOrDefault("after", Collections.emptyList()),
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attributes.getOrDefault("afterName", Collections.emptyList()));
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}
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static AutoConfigurationClass of(File classFile) {
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try (FileInputStream input = new FileInputStream(classFile)) {
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ClassReader classReader = new ClassReader(input);
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AutoConfigurationClassVisitor visitor = new AutoConfigurationClassVisitor();
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classReader.accept(visitor, ClassReader.SKIP_DEBUG | ClassReader.SKIP_CODE | ClassReader.SKIP_FRAMES);
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return visitor.autoConfigurationClass;
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}
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catch (IOException ex) {
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throw new UncheckedIOException(ex);
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}
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}
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private static final class AutoConfigurationClassVisitor extends ClassVisitor {
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private AutoConfigurationClass autoConfigurationClass;
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private String name;
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private AutoConfigurationClassVisitor() {
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super(SpringAsmInfo.ASM_VERSION);
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}
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@Override
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public void visit(int version, int access, String name, String signature, String superName,
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String[] interfaces) {
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this.name = Type.getObjectType(name).getClassName();
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}
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@Override
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public AnnotationVisitor visitAnnotation(String descriptor, boolean visible) {
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String annotationClassName = Type.getType(descriptor).getClassName();
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if ("org.springframework.boot.autoconfigure.AutoConfiguration".equals(annotationClassName)) {
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return new AutoConfigurationAnnotationVisitor();
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}
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return null;
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}
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private final class AutoConfigurationAnnotationVisitor extends AnnotationVisitor {
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private Map<String, List<String>> attributes = new HashMap<>();
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private static final Set<String> INTERESTING_ATTRIBUTES = Set.of("before", "beforeName", "after",
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"afterName");
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private AutoConfigurationAnnotationVisitor() {
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super(SpringAsmInfo.ASM_VERSION);
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}
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@Override
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public void visitEnd() {
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AutoConfigurationClassVisitor.this.autoConfigurationClass = new AutoConfigurationClass(
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AutoConfigurationClassVisitor.this.name, this.attributes);
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}
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@Override
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public AnnotationVisitor visitArray(String attributeName) {
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if (INTERESTING_ATTRIBUTES.contains(attributeName)) {
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return new AnnotationVisitor(SpringAsmInfo.ASM_VERSION) {
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@Override
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public void visit(String name, Object value) {
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if (value instanceof Type type) {
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value = type.getClassName();
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}
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AutoConfigurationAnnotationVisitor.this.attributes
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.computeIfAbsent(attributeName, (n) -> new ArrayList<>())
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.add(Objects.toString(value));
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}
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};
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}
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return null;
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}
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}
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}
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}

‎buildSrc/src/main/java/org/springframework/boot/build/autoconfigure/AutoConfigurationImportsTask.java

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/*
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* Copyright 2025 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
11+
* distributed under the License is distributed on an "AS IS" BASIS,
12+
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
* See the License for the specific language governing permissions and
14+
* limitations under the License.
15+
*/
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package org.springframework.boot.build.autoconfigure;
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import java.io.File;
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import java.io.IOException;
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import java.io.UncheckedIOException;
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import java.nio.file.Files;
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import java.util.List;
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import org.gradle.api.DefaultTask;
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import org.gradle.api.Task;
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import org.gradle.api.file.FileCollection;
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import org.gradle.api.file.FileTree;
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import org.gradle.api.tasks.InputFiles;
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import org.gradle.api.tasks.PathSensitive;
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import org.gradle.api.tasks.PathSensitivity;
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import org.gradle.api.tasks.SkipWhenEmpty;
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/**
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* A {@link Task} that uses a project's auto-configuration imports.
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*
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* @author Andy Wilkinson
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*/
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public abstract class AutoConfigurationImportsTask extends DefaultTask {
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static final String IMPORTS_FILE = "META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports";
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private FileCollection sourceFiles = getProject().getObjects().fileCollection();
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@InputFiles
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@SkipWhenEmpty
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@PathSensitive(PathSensitivity.RELATIVE)
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public FileTree getSource() {
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return this.sourceFiles.getAsFileTree().matching((filter) -> filter.include(IMPORTS_FILE));
50+
}
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public void setSource(Object source) {
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this.sourceFiles = getProject().getObjects().fileCollection().from(source);
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}
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protected List<String> loadImports() {
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File importsFile = getSource().getSingleFile();
58+
try {
59+
return Files.readAllLines(importsFile.toPath());
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}
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catch (IOException ex) {
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throw new UncheckedIOException(ex);
63+
}
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}
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}

‎buildSrc/src/main/java/org/springframework/boot/build/autoconfigure/AutoConfigurationPlugin.java

Lines changed: 36 additions & 86 deletions
Original file line numberDiff line numberDiff line change
@@ -16,31 +16,20 @@
1616

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package org.springframework.boot.build.autoconfigure;
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19-
import java.io.File;
20-
import java.io.IOException;
21-
import java.nio.file.Files;
22-
import java.nio.file.Path;
2319
import java.util.Collections;
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import java.util.List;
20+
import java.util.Map;
2521

26-
import com.tngtech.archunit.core.domain.JavaClass;
27-
import com.tngtech.archunit.lang.ArchCondition;
28-
import com.tngtech.archunit.lang.ArchRule;
29-
import com.tngtech.archunit.lang.ConditionEvents;
30-
import com.tngtech.archunit.lang.SimpleConditionEvent;
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import com.tngtech.archunit.lang.syntax.ArchRuleDefinition;
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import org.gradle.api.Plugin;
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import org.gradle.api.Project;
3424
import org.gradle.api.artifacts.Configuration;
3525
import org.gradle.api.plugins.JavaPlugin;
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import org.gradle.api.plugins.JavaPluginExtension;
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import org.gradle.api.provider.Provider;
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import org.gradle.api.tasks.PathSensitivity;
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import org.gradle.api.tasks.SourceSet;
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import org.gradle.api.tasks.TaskProvider;
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import org.springframework.boot.build.DeployedPlugin;
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import org.springframework.boot.build.architecture.ArchitectureCheck;
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import org.springframework.boot.build.architecture.ArchitecturePlugin;
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import org.springframework.boot.build.optional.OptionalDependenciesPlugin;
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/**
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* {@link Plugin} for projects that define auto-configuration. When applied, the plugin
@@ -70,14 +59,16 @@ public class AutoConfigurationPlugin implements Plugin<Project> {
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*/
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public static final String AUTO_CONFIGURATION_METADATA_CONFIGURATION_NAME = "autoConfigurationMetadata";
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private static final String AUTO_CONFIGURATION_IMPORTS_PATH = "META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports";
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@Override
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public void apply(Project project) {
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project.getPlugins().apply(DeployedPlugin.class);
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project.getPlugins().withType(JavaPlugin.class, (javaPlugin) -> {
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Configuration annotationProcessors = project.getConfigurations()
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.getByName(JavaPlugin.ANNOTATION_PROCESSOR_CONFIGURATION_NAME);
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SourceSet main = project.getExtensions()
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.getByType(JavaPluginExtension.class)
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.getSourceSets()
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.getByName(SourceSet.MAIN_SOURCE_SET_NAME);
8172
annotationProcessors.getDependencies()
8273
.add(project.getDependencies()
8374
.project(Collections.singletonMap("path",
@@ -87,10 +78,6 @@ public void apply(Project project) {
8778
.project(Collections.singletonMap("path",
8879
":spring-boot-project:spring-boot-tools:spring-boot-configuration-processor")));
8980
project.getTasks().register("autoConfigurationMetadata", AutoConfigurationMetadata.class, (task) -> {
90-
SourceSet main = project.getExtensions()
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.getByType(JavaPluginExtension.class)
92-
.getSourceSets()
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.getByName(SourceSet.MAIN_SOURCE_SET_NAME);
9481
task.setSourceSet(main);
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task.dependsOn(main.getClassesTaskName());
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task.getOutputFile()
@@ -99,74 +86,37 @@ public void apply(Project project) {
9986
.add(AutoConfigurationPlugin.AUTO_CONFIGURATION_METADATA_CONFIGURATION_NAME, task.getOutputFile(),
10087
(artifact) -> artifact.builtBy(task));
10188
});
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project.getTasks()
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.register("checkAutoConfigurationImports", CheckAutoConfigurationImports.class, (task) -> {
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task.setSource(main.getResources());
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task.setClasspath(main.getOutput().getClassesDirs());
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task.setDescription("Checks the %s file of the main source set."
94+
.formatted(AutoConfigurationImportsTask.IMPORTS_FILE));
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});
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Configuration requiredClasspath = project.getConfigurations()
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.create("autoConfigurationRequiredClasspath")
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.extendsFrom(project.getConfigurations().getByName(main.getImplementationConfigurationName()),
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project.getConfigurations().getByName(main.getRuntimeOnlyConfigurationName()));
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requiredClasspath.getDependencies()
101+
.add(project.getDependencies()
102+
.project(Map.of("path", ":spring-boot-project:spring-boot-autoconfigure")));
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TaskProvider<CheckAutoConfigurationClasses> checkAutoConfigurationClasses = project.getTasks()
104+
.register("checkAutoConfigurationClasses", CheckAutoConfigurationClasses.class, (task) -> {
105+
task.setSource(main.getResources());
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task.setClasspath(main.getOutput().getClassesDirs());
107+
task.setRequiredDependencies(requiredClasspath);
108+
task.setDescription("Checks the auto-configuration classes of the main source set.");
109+
});
102110
project.getPlugins()
103-
.withType(ArchitecturePlugin.class, (plugin) -> configureArchitecturePluginTasks(project));
104-
});
105-
}
106-
107-
private void configureArchitecturePluginTasks(Project project) {
108-
project.getTasks().configureEach((task) -> {
109-
if ("checkArchitectureMain".equals(task.getName()) && task instanceof ArchitectureCheck architectureCheck) {
110-
configureCheckArchitectureMain(project, architectureCheck);
111-
}
111+
.withType(OptionalDependenciesPlugin.class,
112+
(plugin) -> checkAutoConfigurationClasses.configure((check) -> {
113+
Configuration optionalClasspath = project.getConfigurations()
114+
.create("autoConfigurationOptionalClassPath")
115+
.extendsFrom(project.getConfigurations()
116+
.getByName(OptionalDependenciesPlugin.OPTIONAL_CONFIGURATION_NAME));
117+
check.setOptionalDependencies(optionalClasspath);
118+
}));
112119
});
113120
}
114121

115-
private void configureCheckArchitectureMain(Project project, ArchitectureCheck architectureCheck) {
116-
SourceSet main = project.getExtensions()
117-
.getByType(JavaPluginExtension.class)
118-
.getSourceSets()
119-
.getByName(SourceSet.MAIN_SOURCE_SET_NAME);
120-
File resourcesDirectory = main.getOutput().getResourcesDir();
121-
architectureCheck.dependsOn(main.getProcessResourcesTaskName());
122-
architectureCheck.getInputs()
123-
.files(resourcesDirectory)
124-
.optional()
125-
.withPathSensitivity(PathSensitivity.RELATIVE);
126-
architectureCheck.getRules()
127-
.add(allClassesAnnotatedWithAutoConfigurationShouldBeListedInAutoConfigurationImports(
128-
autoConfigurationImports(project, resourcesDirectory)));
129-
}
130-
131-
private ArchRule allClassesAnnotatedWithAutoConfigurationShouldBeListedInAutoConfigurationImports(
132-
Provider<AutoConfigurationImports> imports) {
133-
return ArchRuleDefinition.classes()
134-
.that()
135-
.areAnnotatedWith("org.springframework.boot.autoconfigure.AutoConfiguration")
136-
.should(beListedInAutoConfigurationImports(imports))
137-
.allowEmptyShould(true);
138-
}
139-
140-
private ArchCondition<JavaClass> beListedInAutoConfigurationImports(Provider<AutoConfigurationImports> imports) {
141-
return new ArchCondition<>("be listed in " + AUTO_CONFIGURATION_IMPORTS_PATH) {
142-
143-
@Override
144-
public void check(JavaClass item, ConditionEvents events) {
145-
AutoConfigurationImports autoConfigurationImports = imports.get();
146-
if (!autoConfigurationImports.imports.contains(item.getName())) {
147-
events.add(SimpleConditionEvent.violated(item,
148-
item.getName() + " was not listed in " + autoConfigurationImports.importsFile));
149-
}
150-
}
151-
152-
};
153-
}
154-
155-
private Provider<AutoConfigurationImports> autoConfigurationImports(Project project, File resourcesDirectory) {
156-
Path importsFile = new File(resourcesDirectory, AUTO_CONFIGURATION_IMPORTS_PATH).toPath();
157-
return project.provider(() -> {
158-
try {
159-
return new AutoConfigurationImports(project.getProjectDir().toPath().relativize(importsFile),
160-
Files.readAllLines(importsFile));
161-
}
162-
catch (IOException ex) {
163-
throw new RuntimeException("Failed to read AutoConfiguration.imports", ex);
164-
}
165-
});
166-
}
167-
168-
private record AutoConfigurationImports(Path importsFile, List<String> imports) {
169-
170-
}
171-
172122
}

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