Add LDAP runtime hints

Closes gh-11438

ldap/src/main/java/org/springframework/security/ldap/aot/hint/LdapSecurityHints.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2002-2022 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
+ *
+ *      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 org.springframework.security.ldap.aot.hint;
+
+import org.springframework.aot.hint.MemberCategory;
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.TypeReference;
+
+/**
+ * {@link RuntimeHintsRegistrar} for LDAP Security resources and classes
+ *
+ * @author Marcus Da Coregio
+ * @since 6.0
+ */
+class LdapSecurityHints implements RuntimeHintsRegistrar {
+
+	@Override
+	public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
+		hints.reflection().registerType(TypeReference.of("com.sun.jndi.ldap.LdapCtxFactory"),
+				(builder) -> builder.withMembers(MemberCategory.INVOKE_DECLARED_CONSTRUCTORS));
+		hints.resources().registerPattern("*.ldif");
+	}
+
+}

ldap/src/main/resources/META-INF/spring/aot.factories

@@ -0,0 +1,2 @@
+org.springframework.aot.hint.RuntimeHintsRegistrar=\
+org.springframework.security.ldap.aot.hint.LdapSecurityHints

ldap/src/test/java/org/springframework/security/ldap/aot/hint/LdapSecurityHintsTests.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2002-2022 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
+ *
+ *      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 org.springframework.security.ldap.aot.hint;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsPredicates;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.TypeReference;
+import org.springframework.core.io.support.SpringFactoriesLoader;
+import org.springframework.util.ClassUtils;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link LdapSecurityHints}
+ *
+ * @author Marcus Da Coregio
+ */
+class LdapSecurityHintsTests {
+
+	private final RuntimeHints hints = new RuntimeHints();
+
+	@BeforeEach
+	void setup() {
+		SpringFactoriesLoader.forResourceLocation("META-INF/spring/aot.factories").load(RuntimeHintsRegistrar.class)
+				.forEach((registrar) -> registrar.registerHints(this.hints, ClassUtils.getDefaultClassLoader()));
+	}
+
+	@Test
+	void ldifResourcesHasHints() {
+		assertThat(RuntimeHintsPredicates.resource().forResource("users.ldif")).accepts(this.hints);
+	}
+
+	@Test
+	void ldapCtxFactoryHasHints() {
+		assertThat(RuntimeHintsPredicates.reflection().onType(TypeReference.of("com.sun.jndi.ldap.LdapCtxFactory")))
+				.accepts(this.hints);
+	}
+
+}