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Keep annotations for merged classes for WebSecurityConfigurerAdapter recipe (Spring Security 5.4) #652

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Original file line number Diff line number Diff line change
Expand Up @@ -54,10 +54,7 @@ public class WebSecurityConfigurerAdapter extends Recipe {
private static final String FQN_USER = "org.springframework.security.core.userdetails.User";
private static final String FQN_USER_DETAILS_BUILDER = "org.springframework.security.core.userdetails.User$UserBuilder";
private static final String FQN_USER_DETAILS = "org.springframework.security.core.userdetails.UserDetails";
private static final String BEAN_PKG = "org.springframework.context.annotation";
private static final String BEAN_SIMPLE_NAME = "Bean";
private static final String FQN_BEAN = BEAN_PKG + "." + BEAN_SIMPLE_NAME;
private static final String BEAN_ANNOTATION = "@" + BEAN_SIMPLE_NAME;
private static final String FQN_BEAN = "org.springframework.context.annotation.Bean";

private static final MethodMatcher CONFIGURE_HTTP_SECURITY_METHOD_MATCHER =
new MethodMatcher("org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter configure(org.springframework.security.config.annotation.web.builders.HttpSecurity)", true);
Expand Down Expand Up @@ -144,15 +141,7 @@ public TreeVisitor<?, ExecutionContext> getVisitor() {
}
// only applicable to former subclasses of WebSecurityConfigurerAdapter - other classes won't be flattened
classesToFlatten.add(classDecl);
// Remove imports for annotations being removed together with class declaration
// It is impossible in the general case to tell whether some of these annotations might apply to the bean methods
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@jevanlingen jevanlingen Dec 23, 2024

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Though this comment is true, choosing to not do anything with the annotations is a wrong move. This can lead to bugs, as I have shown in the description of this PR. It's better/safer to copy them and hope for the best 🤞🏻.

// However, a set of hardcoded annotations can be moved in the future
for (J.Annotation a : classDecl.getLeadingAnnotations()) {
JavaType.FullyQualified type = TypeUtils.asFullyQualified(a.getType());
if (type != null) {
maybeRemoveImport(type);
}
}
maybeRemoveImport(FQN_CONFIGURATION);
classDecl = null; // remove class
}
}
Expand Down Expand Up @@ -217,9 +206,12 @@ private J.ClassDeclaration processAnyClass(J.ClassDeclaration classDecl, Executi
continue;
}
String uniqueName = computeBeanNameFromClassName(fc.getSimpleName(), beanType.getClassName());
List<J.Annotation> fcLeadingAnnotations = ListUtils.map(fc.getLeadingAnnotations(),
anno -> TypeUtils.isOfClassType(anno.getType(), FQN_CONFIGURATION) ? null : anno);
s = m
.withName(m.getName().withSimpleName(uniqueName))
.withMethodType(m.getMethodType().withName(uniqueName));
.withMethodType(m.getMethodType().withName(uniqueName))
.withLeadingAnnotations(ListUtils.concatAll(m.getLeadingAnnotations(), fcLeadingAnnotations));
s = autoFormat(s, ctx, new Cursor(getCursor(), classDecl.getBody()));
}
}
Expand Down Expand Up @@ -285,18 +277,12 @@ private J.MethodDeclaration changeToBeanMethod(J.MethodDeclaration m, J.ClassDec
if (type != null) {
type = type.withName(newMethodName).withReturnType(inmemoryAuthConfigType);
if (!keepParams) {
type = type
.withParameterTypes(Collections.emptyList())
.withParameterNames(Collections.emptyList());
for (JavaType pt : type.getParameterTypes()) {
JavaType.FullyQualified fqt = TypeUtils.asFullyQualified(pt);
if (fqt != null) {
maybeRemoveImport(fqt);
}
maybeRemoveImport(TypeUtils.asFullyQualified(pt));
}
type = type.withParameterTypes(Collections.emptyList()).withParameterNames(Collections.emptyList());
}
}

Space returnPrefix = m.getReturnTypeExpression() == null ? Space.EMPTY : m.getReturnTypeExpression().getPrefix();
m = m.withLeadingAnnotations(ListUtils.map(m.getLeadingAnnotations(), anno -> {
if (TypeUtils.isOfClassType(anno.getType(), FQN_OVERRIDE)) {
Expand All @@ -315,9 +301,15 @@ private J.MethodDeclaration changeToBeanMethod(J.MethodDeclaration m, J.ClassDec
}

maybeAddImport(inmemoryAuthConfigType);
// not calling `updateCursor()` here because `visitBlock()` currently requires
// the original to be stored in the cursor
return addBeanAnnotation(m, new Cursor(getCursor().getParentOrThrow(), m));
maybeAddImport(FQN_BEAN);
return JavaTemplate.builder("@Bean")
.imports(FQN_BEAN)
.javaParser(JavaParser.fromJavaVersion().dependsOn(
"package org.springframework.context.annotation;public @interface Bean {}"))
.build()
// not calling `updateCursor()` here because `visitBlock()` currently requires the original to be stored in the cursor
.apply(new Cursor(getCursor().getParentOrThrow(), m),
m.getCoordinates().addAnnotation(Comparator.comparing(J.Annotation::getSimpleName)));
}

@Override
Expand Down Expand Up @@ -392,7 +384,6 @@ private J.Block handleWebSecurity(J.Block b, J.MethodDeclaration parentMethod) {

private J.Block handleAuthInMemory(J.Block b, J.MethodDeclaration parentMethod) {
Expression userExpr = findUserParameterExpression(b.getStatements().get(b.getStatements().size() - 1));
JavaType.FullyQualified type = userExpr == null ? null : TypeUtils.asFullyQualified(userExpr.getType());
String typeStr = "";
if (userExpr != null) {
if (userExpr.getType() instanceof JavaType.Primitive) {
Expand Down Expand Up @@ -452,19 +443,6 @@ private J.Block handleAuthInMemory(J.Block b, J.MethodDeclaration parentMethod)
maybeRemoveImport(FQN_AUTH_MANAGER_BUILDER);
return b;
}

private J.MethodDeclaration addBeanAnnotation(J.MethodDeclaration m, Cursor c) {
maybeAddImport(FQN_BEAN);
return JavaTemplate.builder(BEAN_ANNOTATION)
.imports(FQN_BEAN)
.javaParser(JavaParser.fromJavaVersion()
.dependsOn("package " + BEAN_PKG + "; public @interface " + BEAN_SIMPLE_NAME + " {}"))
.build()
.apply(
c,
m.getCoordinates().addAnnotation(Comparator.comparing(J.Annotation::getSimpleName))
);
}
});
}

Expand Down Expand Up @@ -535,7 +513,7 @@ private static AuthType getAuthType(J.MethodDeclaration m) {
}

private @Nullable Expression findUserParameterExpression(Statement s) {
AtomicReference<Expression> context = new AtomicReference<>();
AtomicReference<@Nullable Expression> context = new AtomicReference<>();
new JavaIsoVisitor<AtomicReference<Expression>>() {
@Override
public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, AtomicReference<Expression> ref) {
Expand All @@ -548,5 +526,4 @@ public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, Atomi
}.visit(s, context);
return context.get();
}

}
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