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BeanDefinitionInjectProcessor.java
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BeanDefinitionInjectProcessor.java
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/*
* Copyright 2017-2020 original 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 io.micronaut.annotation.processing;
import io.micronaut.annotation.processing.visitor.JavaClassElement;
import io.micronaut.annotation.processing.visitor.JavaVisitorContext;
import io.micronaut.aop.Adapter;
import io.micronaut.aop.Interceptor;
import io.micronaut.aop.Introduction;
import io.micronaut.aop.writer.AopProxyWriter;
import io.micronaut.context.annotation.*;
import io.micronaut.core.annotation.*;
import io.micronaut.core.bind.annotation.Bindable;
import io.micronaut.core.naming.NameUtils;
import io.micronaut.core.reflect.ClassUtils;
import io.micronaut.core.util.ArrayUtils;
import io.micronaut.core.util.CollectionUtils;
import io.micronaut.core.util.StringUtils;
import io.micronaut.core.value.OptionalValues;
import io.micronaut.inject.annotation.AbstractAnnotationMetadataBuilder;
import io.micronaut.inject.annotation.AnnotationMetadataHierarchy;
import io.micronaut.inject.annotation.AnnotationMetadataReference;
import io.micronaut.inject.annotation.DefaultAnnotationMetadata;
import io.micronaut.inject.configuration.ConfigurationMetadata;
import io.micronaut.inject.configuration.ConfigurationMetadataWriter;
import io.micronaut.inject.configuration.PropertyMetadata;
import io.micronaut.inject.processing.JavaModelUtils;
import io.micronaut.inject.processing.ProcessedTypes;
import io.micronaut.inject.writer.*;
import edu.umd.cs.findbugs.annotations.Nullable;
import javax.annotation.processing.ProcessingEnvironment;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedOptions;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Provider;
import javax.inject.Scope;
import javax.inject.Qualifier;
import javax.lang.model.element.AnnotationValue;
import javax.lang.model.element.*;
import javax.lang.model.type.*;
import javax.lang.model.util.ElementFilter;
import javax.lang.model.util.ElementScanner8;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.time.Duration;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static javax.lang.model.element.ElementKind.*;
import static javax.lang.model.type.TypeKind.ARRAY;
/**
* <p>The core annotation processor used to generate bean definitions and power AOP for Micronaut.</p>
*
* <p>Each dependency injection candidate is visited and {@link BeanDefinitionWriter} is used to produce byte code via ASM.
* Each bean results in a instanceof {@link io.micronaut.inject.BeanDefinition}</p>
*
* @author Graeme Rocher
* @author Dean Wette
* @since 1.0
*/
@Internal
@SupportedOptions({AbstractInjectAnnotationProcessor.MICRONAUT_PROCESSING_INCREMENTAL, AbstractInjectAnnotationProcessor.MICRONAUT_PROCESSING_ANNOTATIONS})
public class BeanDefinitionInjectProcessor extends AbstractInjectAnnotationProcessor {
private static final String AROUND_TYPE = "io.micronaut.aop.Around";
private static final String INTRODUCTION_TYPE = "io.micronaut.aop.Introduction";
private static final String[] ANNOTATION_STEREOTYPES = new String[]{
ProcessedTypes.POST_CONSTRUCT,
ProcessedTypes.PRE_DESTROY,
"javax.inject.Inject",
"javax.inject.Qualifier",
"javax.inject.Singleton",
"io.micronaut.context.annotation.Bean",
"io.micronaut.context.annotation.Replaces",
"io.micronaut.context.annotation.Value",
"io.micronaut.context.annotation.Property",
"io.micronaut.context.annotation.Executable",
AROUND_TYPE,
INTRODUCTION_TYPE
};
private static final String ANN_CONSTRAINT = "javax.validation.Constraint";
private static final String ANN_VALID = "javax.validation.Valid";
private static final Predicate<AnnotationMetadata> IS_CONSTRAINT = am ->
am.hasStereotype(ANN_CONSTRAINT) || am.hasStereotype(ANN_VALID);
private static final String ANN_CONFIGURATION_ADVICE = "io.micronaut.runtime.context.env.ConfigurationAdvice";
private static final String ANN_VALIDATED = "io.micronaut.validation.Validated";
private JavaConfigurationMetadataBuilder metadataBuilder;
private Set<String> beanDefinitions;
private Set<String> processed = new HashSet<>();
private boolean processingOver;
@Override
public final synchronized void init(ProcessingEnvironment processingEnv) {
super.init(processingEnv);
this.metadataBuilder = new JavaConfigurationMetadataBuilder(elementUtils, typeUtils, annotationUtils);
this.beanDefinitions = new LinkedHashSet<>();
}
@Override
public final boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
processingOver = roundEnv.processingOver();
annotations = annotations
.stream()
.filter(ann -> !ann.getQualifiedName().toString().equals(AnnotationUtil.KOTLIN_METADATA))
.filter(ann ->
annotationUtils.hasStereotype(ann, ANNOTATION_STEREOTYPES) || AbstractAnnotationMetadataBuilder.isAnnotationMapped(ann.getQualifiedName().toString()))
.collect(Collectors.toSet());
if (!annotations.isEmpty()) {
TypeElement groovyObjectTypeElement = elementUtils.getTypeElement("groovy.lang.GroovyObject");
TypeMirror groovyObjectType = groovyObjectTypeElement != null ? groovyObjectTypeElement.asType() : null;
// accumulate all the class elements for all annotated elements
annotations.forEach(annotation -> roundEnv.getElementsAnnotatedWith(annotation)
.stream()
// filtering annotation definitions, which are not processed
.filter(element -> element.getKind() != ANNOTATION_TYPE)
.forEach(element -> {
TypeElement typeElement = modelUtils.classElementFor(element);
if (element.getKind() == ENUM) {
error(element, "Enum types cannot be defined as beans");
return;
}
// skip Groovy code, handled by InjectTransform. Required for GroovyEclipse compiler
if (typeElement == null || (groovyObjectType != null && typeUtils.isAssignable(typeElement.asType(), groovyObjectType))) {
return;
}
String name = typeElement.getQualifiedName().toString();
if (!beanDefinitions.contains(name) && !processed.contains(name) && !name.endsWith(BeanDefinitionVisitor.PROXY_SUFFIX)) {
boolean isInterface = JavaModelUtils.resolveKind(typeElement, ElementKind.INTERFACE).isPresent();
if (!isInterface) {
beanDefinitions.add(name);
} else {
if (annotationUtils.hasStereotype(typeElement, INTRODUCTION_TYPE) || annotationUtils.hasStereotype(typeElement, ConfigurationReader.class)) {
beanDefinitions.add(name);
}
}
}
}));
}
// remove already processed in previous round
for (String name : processed) {
beanDefinitions.remove(name);
}
// process remaining
int count = beanDefinitions.size();
if (count > 0) {
note("Creating bean classes for %s type elements", count);
beanDefinitions.forEach(className -> {
if (processed.add(className)) {
final TypeElement refreshedClassElement = elementUtils.getTypeElement(className);
try {
final AnnBeanElementVisitor visitor = new AnnBeanElementVisitor(refreshedClassElement);
refreshedClassElement.accept(visitor, className);
visitor.getBeanDefinitionWriters().forEach((name, writer) -> {
String beanDefinitionName = writer.getBeanDefinitionName();
if (processed.add(beanDefinitionName)) {
processBeanDefinitions(refreshedClassElement, writer);
}
});
} catch (PostponeToNextRoundException e) {
processed.remove(className);
}
}
});
AnnotationUtils.invalidateCache();
}
/*
Since the underlying Filer expects us to write only once into a file we need to make sure it happens in the last
processing round.
*/
if (processingOver) {
try {
writeConfigurationMetadata();
writeBeanDefinitionsToMetaInf();
} finally {
AnnotationUtils.invalidateCache();
AbstractAnnotationMetadataBuilder.clearMutated();
}
}
return false;
}
/**
* Writes {@link io.micronaut.inject.BeanDefinitionReference} into /META-INF/services/io.micronaut.inject.BeanDefinitionReference.
*/
private void writeBeanDefinitionsToMetaInf() {
try {
classWriterOutputVisitor.finish();
} catch (Exception e) {
String message = e.getMessage();
error("Error occurred writing META-INF files: %s", message != null ? message : e);
}
}
private void writeConfigurationMetadata() {
if (metadataBuilder.hasMetadata()) {
ServiceLoader<ConfigurationMetadataWriter> writers = ServiceLoader.load(ConfigurationMetadataWriter.class, getClass().getClassLoader());
try {
for (ConfigurationMetadataWriter writer : writers) {
try {
writer.write(metadataBuilder, classWriterOutputVisitor);
} catch (IOException e) {
error("Error occurred writing configuration metadata: %s", e.getMessage());
}
}
} catch (ServiceConfigurationError e) {
warning("Unable to load ConfigurationMetadataWriter due to : %s", e.getMessage());
}
}
}
private void processBeanDefinitions(TypeElement beanClassElement, BeanDefinitionVisitor beanDefinitionWriter) {
try {
beanDefinitionWriter.visitBeanDefinitionEnd();
beanDefinitionWriter.accept(classWriterOutputVisitor);
String beanDefinitionName = beanDefinitionWriter.getBeanDefinitionName();
String beanTypeName = beanDefinitionWriter.getBeanTypeName();
List<? extends TypeMirror> interfaces = beanClassElement.getInterfaces();
for (TypeMirror anInterface : interfaces) {
if (anInterface instanceof DeclaredType) {
DeclaredType declaredType = (DeclaredType) anInterface;
Element element = declaredType.asElement();
if (element instanceof TypeElement) {
TypeElement te = (TypeElement) element;
String name = te.getQualifiedName().toString();
if (Provider.class.getName().equals(name)) {
List<? extends TypeMirror> typeArguments = declaredType.getTypeArguments();
if (!typeArguments.isEmpty()) {
beanTypeName = genericUtils.resolveTypeReference(typeArguments.get(0)).toString();
}
}
}
}
}
AnnotationMetadata annotationMetadata = beanDefinitionWriter.getAnnotationMetadata();
BeanDefinitionReferenceWriter beanDefinitionReferenceWriter =
new BeanDefinitionReferenceWriter(
beanTypeName,
beanDefinitionName,
beanDefinitionWriter.getOriginatingElement(),
annotationMetadata
);
beanDefinitionReferenceWriter.setRequiresMethodProcessing(beanDefinitionWriter.requiresMethodProcessing());
String className = beanDefinitionReferenceWriter.getBeanDefinitionQualifiedClassName();
processed.add(className);
beanDefinitionReferenceWriter.setContextScope(
annotationUtils.hasStereotype(beanClassElement, Context.class));
beanDefinitionReferenceWriter.accept(classWriterOutputVisitor);
} catch (IOException e) {
// raise a compile error
String message = e.getMessage();
error("Unexpected error: %s", message != null ? message : e.getClass().getSimpleName());
}
}
private String getPropertyMetadataTypeReference(TypeMirror valueType) {
if (modelUtils.isOptional(valueType)) {
return genericUtils.getFirstTypeArgument(valueType)
.map(typeMirror -> modelUtils.resolveTypeName(typeMirror))
.orElseGet(() -> modelUtils.resolveTypeName(valueType));
} else {
return modelUtils.resolveTypeName(valueType);
}
}
private AnnotationMetadata addPropertyMetadata(AnnotationMetadata annotationMetadata, VariableElement element, String propertyName) {
final PropertyMetadata pm = metadataBuilder.visitProperty(
getPropertyMetadataTypeReference(element.asType()),
propertyName, null, null
);
return addPropertyMetadata(annotationMetadata, pm);
}
private AnnotationMetadata addPropertyMetadata(AnnotationMetadata annotationMetadata, PropertyMetadata propertyMetadata) {
return DefaultAnnotationMetadata.mutateMember(
annotationMetadata,
PropertySource.class.getName(),
AnnotationMetadata.VALUE_MEMBER,
Collections.singletonList(
new io.micronaut.core.annotation.AnnotationValue(
Property.class.getName(),
Collections.singletonMap(
"name",
propertyMetadata.getPath()
)
)
)
);
}
/**
* Annotation Bean element visitor.
*/
class AnnBeanElementVisitor extends ElementScanner8<Object, Object> {
private final TypeElement concreteClass;
private final AnnotationMetadata concreteClassMetadata;
private final Map<Name, BeanDefinitionVisitor> beanDefinitionWriters;
private final boolean isConfigurationPropertiesType;
private final boolean isFactoryType;
private final boolean isExecutableType;
private final boolean isAopProxyType;
private final OptionalValues<Boolean> aopSettings;
private final boolean isDeclaredBean;
private final JavaClassElement originatingElement;
private ConfigurationMetadata configurationMetadata;
private ExecutableElementParamInfo constructorParameterInfo;
private AtomicInteger adaptedMethodIndex = new AtomicInteger(0);
private AtomicInteger factoryMethodIndex = new AtomicInteger(0);
private Set<Name> visitedTypes = new HashSet<>();
/**
* @param concreteClass The {@link TypeElement}
*/
AnnBeanElementVisitor(TypeElement concreteClass) {
this.concreteClass = concreteClass;
this.concreteClassMetadata = annotationUtils.getAnnotationMetadata(concreteClass);
this.originatingElement = new JavaClassElement(concreteClass, concreteClassMetadata, new JavaVisitorContext(
processingEnv,
messager,
elementUtils,
annotationUtils,
typeUtils,
modelUtils,
genericUtils,
filer,
visitorAttributes
));
beanDefinitionWriters = new LinkedHashMap<>();
this.isFactoryType = concreteClassMetadata.hasStereotype(Factory.class);
this.isConfigurationPropertiesType = concreteClassMetadata.hasDeclaredStereotype(ConfigurationReader.class) || concreteClassMetadata.hasDeclaredStereotype(EachProperty.class);
this.isAopProxyType = concreteClassMetadata.hasStereotype(AROUND_TYPE) && !modelUtils.isAbstract(concreteClass);
this.aopSettings = isAopProxyType ? concreteClassMetadata.getValues(AROUND_TYPE, Boolean.class) : OptionalValues.empty();
ExecutableElement constructor = modelUtils.concreteConstructorFor(concreteClass, annotationUtils);
this.constructorParameterInfo = populateParameterData(null, constructor, Collections.emptyMap());
this.isExecutableType = isAopProxyType || concreteClassMetadata.hasStereotype(Executable.class);
boolean hasQualifier = concreteClassMetadata.hasStereotype(Qualifier.class) && !modelUtils.isAbstract(concreteClass);
this.isDeclaredBean = isExecutableType || concreteClassMetadata.hasStereotype(Scope.class) || concreteClassMetadata.hasStereotype(DefaultScope.class) || constructorParameterInfo.getAnnotationMetadata().hasStereotype(Inject.class) || hasQualifier;
}
/**
* @return The {@link TypeElement}
*/
TypeElement getConcreteClass() {
return concreteClass;
}
/**
* @return The bean definition writers
*/
Map<Name, BeanDefinitionVisitor> getBeanDefinitionWriters() {
return beanDefinitionWriters;
}
@Override
public Object visitType(TypeElement classElement, Object o) {
Name classElementQualifiedName = classElement.getQualifiedName();
if (visitedTypes.contains(classElementQualifiedName)) {
// bail out if already visited
return o;
}
boolean isInterface = JavaModelUtils.isInterface(classElement);
visitedTypes.add(classElementQualifiedName);
AnnotationMetadata typeAnnotationMetadata = annotationUtils.getAnnotationMetadata(classElement);
if (isConfigurationPropertiesType) {
// TODO: populate documentation
this.configurationMetadata = metadataBuilder.visitProperties(
concreteClass,
null
);
if (isInterface) {
typeAnnotationMetadata = addAnnotation(
typeAnnotationMetadata,
ANN_CONFIGURATION_ADVICE
);
}
}
if (typeAnnotationMetadata.hasStereotype(INTRODUCTION_TYPE)) {
AopProxyWriter aopProxyWriter = createIntroductionAdviceWriter(classElement);
ExecutableElement constructor = JavaModelUtils.resolveKind(classElement, ElementKind.CLASS).isPresent() ? modelUtils.concreteConstructorFor(classElement, annotationUtils) : null;
ExecutableElementParamInfo constructorData = constructor != null ? populateParameterData(null, constructor, Collections.emptyMap()) : null;
if (constructorData != null) {
aopProxyWriter.visitBeanDefinitionConstructor(
constructorData.getAnnotationMetadata(),
constructorData.isRequiresReflection(),
constructorData.getParameters(),
constructorData.getParameterMetadata(),
constructorData.getGenericTypes()
);
} else {
aopProxyWriter.visitBeanDefinitionConstructor(
AnnotationMetadata.EMPTY_METADATA,
false
);
}
beanDefinitionWriters.put(classElementQualifiedName, aopProxyWriter);
visitIntroductionAdviceInterface(classElement, typeAnnotationMetadata, aopProxyWriter);
if (!isInterface) {
List<? extends Element> elements = classElement.getEnclosedElements().stream()
// already handled the public ctor
.filter(element -> element.getKind() != CONSTRUCTOR)
.collect(Collectors.toList());
return scan(elements, o);
} else {
return null;
}
} else {
Element enclosingElement = classElement.getEnclosingElement();
// don't process inner class unless this is the visitor for it
final Name qualifiedName = concreteClass.getQualifiedName();
if (!JavaModelUtils.isClass(enclosingElement) ||
qualifiedName.equals(classElementQualifiedName)) {
if (qualifiedName.equals(classElementQualifiedName)) {
if (isDeclaredBean) {
// we know this class has supported annotations so we need a beandef writer for it
PackageElement packageElement = elementUtils.getPackageOf(classElement);
if (packageElement.isUnnamed()) {
error(classElement, "Micronaut beans cannot be in the default package");
return null;
}
BeanDefinitionVisitor beanDefinitionWriter = getOrCreateBeanDefinitionWriter(classElement, qualifiedName);
if (isAopProxyType) {
if (modelUtils.isFinal(classElement)) {
error(classElement, "Cannot apply AOP advice to final class. Class must be made non-final to support proxying: " + classElement);
return null;
}
Object[] interceptorTypes = annotationUtils.getAnnotationMetadata(concreteClass)
.getAnnotationNamesByStereotype(AROUND_TYPE)
.toArray();
resolveAopProxyWriter(
beanDefinitionWriter,
aopSettings,
false,
this.constructorParameterInfo,
interceptorTypes);
}
} else {
if (modelUtils.isAbstract(classElement)) {
return null;
}
}
}
List<? extends Element> elements = classElement
.getEnclosedElements()
.stream()
// already handled the public ctor
.filter(element -> element.getKind() != CONSTRUCTOR)
.collect(Collectors.toList());
if (isConfigurationPropertiesType) {
// handle non @Inject, @Value fields as config properties
List<? extends Element> members = elementUtils.getAllMembers(classElement);
ElementFilter.fieldsIn(members).forEach(
field -> {
AnnotationMetadata fieldAnnotationMetadata = annotationUtils.getAnnotationMetadata(field);
boolean isConfigBuilder = fieldAnnotationMetadata.hasStereotype(ConfigurationBuilder.class);
if (modelUtils.isStatic(field)) {
return;
}
// its common for builders to be initialized, so allow final
if (!modelUtils.isFinal(field) || isConfigBuilder) {
visitConfigurationProperty(field, fieldAnnotationMetadata);
}
}
);
ElementFilter.methodsIn(members).forEach(method -> {
boolean isCandidateMethod = !modelUtils.isStatic(method) &&
!modelUtils.isPrivate(method) &&
!modelUtils.isAbstract(method);
if (isCandidateMethod) {
Element e = method.getEnclosingElement();
if (e instanceof TypeElement && !e.equals(classElement)) {
String methodName = method.getSimpleName().toString();
if (method.getParameters().size() == 1 &&
NameUtils.isSetterName(methodName)) {
visitConfigurationPropertySetter(method);
} else if (NameUtils.isGetterName(methodName)) {
BeanDefinitionVisitor writer = getOrCreateBeanDefinitionWriter(concreteClass, concreteClass.getQualifiedName());
if (!writer.isValidated()) {
writer.setValidated(IS_CONSTRAINT.test(annotationUtils.getAnnotationMetadata(method)));
}
}
}
}
});
} else {
TypeElement superClass = modelUtils.superClassFor(classElement);
if (superClass != null && !modelUtils.isObjectClass(superClass)) {
superClass.accept(this, o);
}
}
return scan(elements, o);
} else {
return null;
}
}
}
/**
* Gets or creates a bean definition writer.
*
* @param classElement The class element
* @param qualifiedName The name
* @return The writer
*/
public BeanDefinitionVisitor getOrCreateBeanDefinitionWriter(TypeElement classElement, Name qualifiedName) {
BeanDefinitionVisitor beanDefinitionWriter = beanDefinitionWriters.get(qualifiedName);
if (beanDefinitionWriter == null) {
beanDefinitionWriter = createBeanDefinitionWriterFor(classElement);
Name proxyKey = createProxyKey(beanDefinitionWriter.getBeanDefinitionName());
beanDefinitionWriters.put(qualifiedName, beanDefinitionWriter);
BeanDefinitionVisitor proxyWriter = beanDefinitionWriters.get(proxyKey);
final AnnotationMetadata annotationMetadata = new AnnotationMetadataHierarchy(
concreteClassMetadata,
constructorParameterInfo.getAnnotationMetadata()
);
if (proxyWriter != null) {
proxyWriter.visitBeanDefinitionConstructor(
annotationMetadata,
constructorParameterInfo.isRequiresReflection(),
constructorParameterInfo.getParameters(),
constructorParameterInfo.getParameterMetadata(),
constructorParameterInfo.getGenericTypes());
}
beanDefinitionWriter.visitBeanDefinitionConstructor(
annotationMetadata,
constructorParameterInfo.isRequiresReflection(),
constructorParameterInfo.getParameters(),
constructorParameterInfo.getParameterMetadata(),
constructorParameterInfo.getGenericTypes());
if (constructorParameterInfo.isValidated()) {
beanDefinitionWriter.setValidated(true);
}
}
return beanDefinitionWriter;
}
private AnnotationMetadata addAnnotation(AnnotationMetadata annotationMetadata, String annotation) {
final JavaAnnotationMetadataBuilder metadataBuilder = javaVisitorContext.getAnnotationUtils().newAnnotationBuilder();
annotationMetadata = metadataBuilder.annotate(
annotationMetadata,
io.micronaut.core.annotation.AnnotationValue.builder(annotation).build());
return annotationMetadata;
}
private void visitIntroductionAdviceInterface(TypeElement classElement, AnnotationMetadata typeAnnotationMetadata, AopProxyWriter aopProxyWriter) {
String introductionTypeName = classElement.getQualifiedName().toString();
final boolean isConfigProps = typeAnnotationMetadata.hasAnnotation(ANN_CONFIGURATION_ADVICE);
if (isConfigProps) {
metadataBuilder.visitProperties(
classElement,
null
);
}
classElement.asType().accept(new PublicAbstractMethodVisitor<Object, AopProxyWriter>(classElement, javaVisitorContext) {
@Override
protected boolean isAcceptableMethod(ExecutableElement executableElement) {
return super.isAcceptableMethod(executableElement)
|| annotationUtils.getAnnotationMetadata(executableElement).hasDeclaredStereotype(AROUND_TYPE)
|| annotationUtils.getAnnotationMetadata(classElement).hasDeclaredStereotype(AROUND_TYPE);
}
@Override
protected void accept(DeclaredType type, Element element, AopProxyWriter aopProxyWriter) {
ExecutableElement method = (ExecutableElement) element;
final boolean isAbstract = modelUtils.isAbstract(method);
Map<String, Object> boundTypes = genericUtils.resolveBoundTypes(type);
ExecutableElementParamInfo params = populateParameterData(introductionTypeName, method, boundTypes);
Object owningType = modelUtils.resolveTypeReference(method.getEnclosingElement());
if (owningType == null) {
throw new IllegalStateException("Owning type cannot be null");
}
TypeMirror returnTypeMirror = method.getReturnType();
final Object returnType = modelUtils.resolveTypeReference(returnTypeMirror);
Object resolvedReturnType = genericUtils.resolveTypeReference(returnTypeMirror, boundTypes);
Map<String, Object> returnTypeGenerics = genericUtils.resolveGenericTypes(returnTypeMirror, boundTypes);
String methodName = method.getSimpleName().toString();
Map<String, Object> methodParameters = params.getParameters();
Map<String, Object> genericParameters = params.getGenericParameters();
Map<String, AnnotationMetadata> parameterAnnotationMetadata = params.getParameterMetadata();
Map<String, Map<String, Object>> methodGenericTypes = params.getGenericTypes();
AnnotationMetadata annotationMetadata;
if (annotationUtils.isAnnotated(introductionTypeName, method) || JavaAnnotationMetadataBuilder.hasAnnotation(method, Override.class)) {
annotationMetadata = annotationUtils.newAnnotationBuilder().buildForParent(introductionTypeName, classElement, method);
} else {
annotationMetadata = new AnnotationMetadataReference(
aopProxyWriter.getBeanDefinitionName() + BeanDefinitionReferenceWriter.REF_SUFFIX,
typeAnnotationMetadata
);
}
if (!annotationMetadata.hasStereotype(ANN_VALIDATED) &&
isDeclaredBean &&
params.getParameterMetadata().values().stream().anyMatch(IS_CONSTRAINT)) {
annotationMetadata = addAnnotation(annotationMetadata, ANN_VALIDATED);
}
if (isConfigProps) {
if (isAbstract) {
if (!aopProxyWriter.isValidated()) {
aopProxyWriter.setValidated(IS_CONSTRAINT.test(annotationMetadata));
}
if (!NameUtils.isGetterName(methodName)) {
error(classElement, "Only getter methods are allowed on @ConfigurationProperties interfaces: " + method);
return;
}
if (!methodParameters.isEmpty()) {
error(classElement, "Only zero argument getter methods are allowed on @ConfigurationProperties interfaces: " + method);
return;
}
String docComment = elementUtils.getDocComment(method);
final String propertyName = NameUtils.getPropertyNameForGetter(methodName);
final String propertyType = getPropertyMetadataTypeReference(returnTypeMirror);
if ("void".equals(propertyType)) {
error(classElement, "Getter methods must return a value @ConfigurationProperties interfaces: " + method);
return;
}
final PropertyMetadata propertyMetadata = metadataBuilder.visitProperty(
classElement,
classElement,
propertyType,
propertyName,
docComment,
annotationMetadata.stringValue(Bindable.class, "defaultValue").orElse(null)
);
annotationMetadata = addPropertyMetadata(
annotationMetadata,
propertyMetadata
);
final TypeElement typeElement = !ClassUtils.isJavaBasicType(propertyType) ? resolveTypeElement(returnTypeMirror) : null;
final AnnotationValueBuilder<Annotation> builder = io.micronaut.core.annotation.AnnotationValue.builder(ANN_CONFIGURATION_ADVICE);
if (typeElement != null && annotationUtils.hasStereotype(typeElement, Scope.class)) {
builder.member("bean", true);
}
if (typeAnnotationMetadata.hasStereotype(EachProperty.class)) {
builder.member("iterable", true);
}
final JavaAnnotationMetadataBuilder metadataBuilder = javaVisitorContext.getAnnotationUtils().newAnnotationBuilder();
annotationMetadata = metadataBuilder.annotate(
annotationMetadata,
builder.build());
if (annotationMetadata.hasStereotype(ANN_CONSTRAINT) && !annotationMetadata.hasStereotype(Executable.class)) {
aopProxyWriter.visitExecutableMethod(
owningType,
returnType,
resolvedReturnType,
returnTypeGenerics,
methodName,
methodParameters,
genericParameters,
parameterAnnotationMetadata,
methodGenericTypes,
annotationMetadata,
JavaModelUtils.isInterface(method.getEnclosingElement()),
method.isDefault()
);
}
}
}
if (annotationMetadata.hasStereotype(AROUND_TYPE)) {
Object[] interceptorTypes = annotationMetadata
.getAnnotationNamesByStereotype(AROUND_TYPE)
.toArray();
aopProxyWriter.visitInterceptorTypes(interceptorTypes);
}
if (annotationMetadata.hasStereotype(Executable.class)) {
aopProxyWriter.visitExecutableMethod(
owningType,
returnType,
resolvedReturnType,
returnTypeGenerics,
methodName,
methodParameters,
genericParameters,
parameterAnnotationMetadata,
methodGenericTypes,
annotationMetadata,
JavaModelUtils.isInterface(method.getEnclosingElement()),
method.isDefault()
);
}
if (isAbstract) {
aopProxyWriter.visitIntroductionMethod(
owningType,
returnType,
resolvedReturnType,
returnTypeGenerics,
methodName,
methodParameters,
genericParameters,
parameterAnnotationMetadata,
methodGenericTypes,
annotationMetadata
);
} else {
// only apply around advise to non-abstract methods of introduction advise
aopProxyWriter.visitAroundMethod(
owningType,
returnType,
resolvedReturnType,
returnTypeGenerics,
methodName,
methodParameters,
genericParameters,
parameterAnnotationMetadata,
methodGenericTypes,
annotationMetadata,
JavaModelUtils.isInterface(method.getEnclosingElement()),
method.isDefault()
);
}
}
private @Nullable TypeElement resolveTypeElement(TypeMirror typeMirror) {
if (typeMirror instanceof DeclaredType) {
final Element element = ((DeclaredType) typeMirror).asElement();
if (element instanceof TypeElement) {
return (TypeElement) element;
}
}
return null;
}
}, aopProxyWriter);
}
@Override
public Object visitExecutable(ExecutableElement method, Object o) {
if (method.getKind() == ElementKind.CONSTRUCTOR) {
// ctor is handled by visitType
error("Unexpected call to visitExecutable for ctor %s of %s",
method.getSimpleName(), o);
return null;
}
if (modelUtils.isStatic(method) || modelUtils.isAbstract(method)) {
return null;
}
final AnnotationMetadata annotationMetadata = annotationUtils.getAnnotationMetadata(method);
AnnotationMetadata methodAnnotationMetadata;
if (annotationMetadata instanceof AnnotationMetadataHierarchy) {
methodAnnotationMetadata = annotationMetadata;
} else {
methodAnnotationMetadata = new AnnotationMetadataHierarchy(
concreteClassMetadata,
annotationMetadata
);
}
TypeKind returnKind = method.getReturnType().getKind();
if ((returnKind == TypeKind.ERROR) && !processingOver) {
throw new PostponeToNextRoundException();
}
// handle @Bean annotation for @Factory class
if (isFactoryType && methodAnnotationMetadata.hasDeclaredStereotype(Bean.class, Scope.class) && returnKind == TypeKind.DECLARED) {
visitBeanFactoryMethod(method);
return null;
}
boolean injected = methodAnnotationMetadata.hasDeclaredStereotype(Inject.class);
boolean postConstruct = methodAnnotationMetadata.hasDeclaredStereotype(ProcessedTypes.POST_CONSTRUCT);
boolean preDestroy = methodAnnotationMetadata.hasDeclaredStereotype(ProcessedTypes.PRE_DESTROY);
if (injected || postConstruct || preDestroy || methodAnnotationMetadata.hasDeclaredStereotype(ConfigurationInject.class)) {
if (isDeclaredBean) {
visitAnnotatedMethod(method, o);
} else if (injected) {
// DEPRECATE: This behaviour should be deprecated in 2.0
visitAnnotatedMethod(method, o);
}
return null;
}
Set<Modifier> modifiers = method.getModifiers();
boolean hasInvalidModifiers = modelUtils.isAbstract(method) || modifiers.contains(Modifier.STATIC) || methodAnnotationMetadata.hasAnnotation(Internal.class) || modelUtils.isPrivate(method);
boolean isPublic = modifiers.contains(Modifier.PUBLIC) && !hasInvalidModifiers;
boolean isExecutable =
!hasInvalidModifiers &&
(isExecutableThroughType(method.getEnclosingElement(), methodAnnotationMetadata, annotationMetadata, modifiers, isPublic) ||
annotationMetadata.hasStereotype(AROUND_TYPE));
boolean hasConstraints = false;
if (isDeclaredBean && !methodAnnotationMetadata.hasStereotype(ANN_VALIDATED) &&
method.getParameters()
.stream()
.anyMatch(p -> annotationUtils.hasStereotype(p, ANN_CONSTRAINT) || annotationUtils.hasStereotype(p, ANN_VALID))) {
hasConstraints = true;
methodAnnotationMetadata = javaVisitorContext.getAnnotationUtils().newAnnotationBuilder().annotate(
methodAnnotationMetadata,
io.micronaut.core.annotation.AnnotationValue.builder(ANN_VALIDATED).build()
);
}
if (isDeclaredBean && isExecutable) {
visitExecutableMethod(method, methodAnnotationMetadata);
} else if (isConfigurationPropertiesType && !modelUtils.isPrivate(method) && !modelUtils.isStatic(method)) {
String methodName = method.getSimpleName().toString();
if (NameUtils.isSetterName(methodName) && method.getParameters().size() == 1) {
visitConfigurationPropertySetter(method);
} else if (NameUtils.isGetterName(methodName)) {
BeanDefinitionVisitor writer = getOrCreateBeanDefinitionWriter(concreteClass, concreteClass.getQualifiedName());
if (!writer.isValidated()) {
writer.setValidated(IS_CONSTRAINT.test(methodAnnotationMetadata));
}
}
} else if (isPublic && hasConstraints) {
visitExecutableMethod(method, methodAnnotationMetadata);
}
return null;
}
private boolean isExecutableThroughType(
Element enclosingElement,
AnnotationMetadata annotationMetadataHierarchy,
AnnotationMetadata declaredMetadata, Set<Modifier> modifiers,
boolean isPublic) {
return (isExecutableType && (isPublic || (modifiers.isEmpty()) && concreteClass.equals(enclosingElement))) ||
annotationMetadataHierarchy.hasDeclaredStereotype(Executable.class) ||
declaredMetadata.hasStereotype(Executable.class);
}
private void visitConfigurationPropertySetter(ExecutableElement method) {
BeanDefinitionVisitor writer = getOrCreateBeanDefinitionWriter(concreteClass, concreteClass.getQualifiedName());
VariableElement parameter = method.getParameters().get(0);
TypeMirror valueType = parameter.asType();
Object fieldType = modelUtils.resolveTypeReference(valueType);
Map<String, Object> genericTypes = Collections.emptyMap();
TypeKind typeKind = valueType.getKind();
if (!(typeKind.isPrimitive() || typeKind == ARRAY)) {
genericTypes = genericUtils.resolveGenericTypes(valueType, Collections.emptyMap());
}
TypeElement declaringClass = modelUtils.classElementFor(method);
if (declaringClass != null) {
AnnotationMetadata methodAnnotationMetadata = annotationUtils.getAnnotationMetadata(method);
String propertyName = NameUtils.getPropertyNameForSetter(method.getSimpleName().toString());
boolean isInterface = JavaModelUtils.isInterface(typeUtils.asElement(valueType));
if (methodAnnotationMetadata.hasStereotype(ConfigurationBuilder.class)) {
writer.visitConfigBuilderMethod(
fieldType,
NameUtils.getterNameFor(propertyName),
methodAnnotationMetadata,
metadataBuilder,
isInterface);
try {
visitConfigurationBuilder(declaringClass, method, valueType, writer);
} finally {
writer.visitConfigBuilderEnd();
}
} else {
if (shouldExclude(configurationMetadata, propertyName)) {
return;
}
String docComment = elementUtils.getDocComment(method);
String setterName = method.getSimpleName().toString();
PropertyMetadata propertyMetadata = metadataBuilder.visitProperty(
concreteClass,
declaringClass,
getPropertyMetadataTypeReference(valueType),
propertyName,
docComment,
null
);
AnnotationMetadata annotationMetadata = addPropertyMetadata(AnnotationMetadata.EMPTY_METADATA, propertyMetadata);
boolean requiresReflection = true;
if (modelUtils.isPublic(method)) {
requiresReflection = false;
} else if (modelUtils.isPackagePrivate(method) || modelUtils.isProtected(method)) {
PackageElement declaringPackage = elementUtils.getPackageOf(declaringClass);
PackageElement concretePackage = elementUtils.getPackageOf(this.concreteClass);
requiresReflection = !declaringPackage.getQualifiedName().equals(concretePackage.getQualifiedName());
}
writer.visitSetterValue(
modelUtils.resolveTypeReference(declaringClass),
modelUtils.resolveTypeReference(method.getReturnType()),
annotationMetadata,
requiresReflection,
fieldType,
setterName,
genericTypes,
annotationUtils.getAnnotationMetadata(method.getParameters().get(0)),
true);
}
}
}
/**
* @param beanMethod The {@link ExecutableElement}
*/
void visitBeanFactoryMethod(ExecutableElement beanMethod) {
if (isFactoryType && annotationUtils.hasStereotype(concreteClass, AROUND_TYPE)) {
visitExecutableMethod(beanMethod, annotationUtils.getAnnotationMetadata(beanMethod));
}
TypeMirror returnType = beanMethod.getReturnType();
TypeElement producedElement = modelUtils.classElementFor(typeUtils.asElement(returnType));
if (producedElement == null) {
return;
}
String producedTypeName = producedElement.getQualifiedName().toString();
ExecutableElementParamInfo beanMethodParams = populateParameterData(producedTypeName, beanMethod, Collections.emptyMap());
BeanDefinitionWriter beanMethodWriter = createFactoryBeanMethodWriterFor(beanMethod, producedElement);
Map<String, Map<String, Object>> beanTypeArguments = null;
if (returnType instanceof DeclaredType) {
DeclaredType dt = (DeclaredType) returnType;
beanTypeArguments = genericUtils.buildGenericTypeArgumentInfo(dt);
beanMethodWriter.visitTypeArguments(beanTypeArguments);
}
final String beanMethodName = beanMethod.getSimpleName().toString();
final Map<String, Object> beanMethodParameters = beanMethodParams.getParameters();