/*
 * Copyright 2002-2019 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.scheduling.annotation;

import java.util.concurrent.atomic.AtomicInteger;

import org.aspectj.lang.annotation.Aspect;
import org.junit.jupiter.api.Test;

import org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator;
import org.springframework.aop.support.AopUtils;
import org.springframework.beans.factory.BeanCreationException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.testfixture.EnabledForTestGroups;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.dao.support.PersistenceExceptionTranslator;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.transaction.testfixture.CallCountingTransactionManager;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.mockito.Mockito.mock;
import static org.springframework.core.testfixture.TestGroup.PERFORMANCE;

/**
 * Integration tests cornering bug SPR-8651, which revealed that @Scheduled methods may
 * not work well with beans that have already been proxied for other reasons such
 * as @Transactional or @Async processing.
 *
 * @author Chris Beams
 * @author Juergen Hoeller
 * @since 3.1
 */
@SuppressWarnings("resource")
@EnabledForTestGroups(PERFORMANCE)
class ScheduledAndTransactionalAnnotationIntegrationTests {

	@Test
	void failsWhenJdkProxyAndScheduledMethodNotPresentOnInterface() {
		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
		ctx.register(Config.class, JdkProxyTxConfig.class, RepoConfigA.class);
		assertThatExceptionOfType(BeanCreationException.class)
			.isThrownBy(ctx::refresh)
			.satisfies(ex -> assertThat(ex.getRootCause()).isInstanceOf(IllegalStateException.class));
	}

	@Test
	void succeedsWhenSubclassProxyAndScheduledMethodNotPresentOnInterface() throws InterruptedException {
		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
		ctx.register(Config.class, SubclassProxyTxConfig.class, RepoConfigA.class);
		ctx.refresh();

		Thread.sleep(100);  // allow @Scheduled method to be called several times

		MyRepository repository = ctx.getBean(MyRepository.class);
		CallCountingTransactionManager txManager = ctx.getBean(CallCountingTransactionManager.class);
		assertThat(AopUtils.isCglibProxy(repository)).isEqualTo(true);
		assertThat(repository.getInvocationCount()).isGreaterThan(0);
		assertThat(txManager.commits).isGreaterThan(0);
	}

	@Test
	void succeedsWhenJdkProxyAndScheduledMethodIsPresentOnInterface() throws InterruptedException {
		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
		ctx.register(Config.class, JdkProxyTxConfig.class, RepoConfigB.class);
		ctx.refresh();

		Thread.sleep(100);  // allow @Scheduled method to be called several times

		MyRepositoryWithScheduledMethod repository = ctx.getBean(MyRepositoryWithScheduledMethod.class);
		CallCountingTransactionManager txManager = ctx.getBean(CallCountingTransactionManager.class);
		assertThat(AopUtils.isJdkDynamicProxy(repository)).isTrue();
		assertThat(repository.getInvocationCount()).isGreaterThan(0);
		assertThat(txManager.commits).isGreaterThan(0);
	}

	@Test
	void withAspectConfig() throws InterruptedException {
		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
		ctx.register(AspectConfig.class, MyRepositoryWithScheduledMethodImpl.class);
		ctx.refresh();

		Thread.sleep(100);  // allow @Scheduled method to be called several times

		MyRepositoryWithScheduledMethod repository = ctx.getBean(MyRepositoryWithScheduledMethod.class);
		assertThat(AopUtils.isCglibProxy(repository)).isTrue();
		assertThat(repository.getInvocationCount()).isGreaterThan(0);
	}


	@Configuration
	@EnableTransactionManagement
	static class JdkProxyTxConfig {
	}


	@Configuration
	@EnableTransactionManagement(proxyTargetClass = true)
	static class SubclassProxyTxConfig {
	}


	@Configuration
	static class RepoConfigA {

		@Bean
		MyRepository repository() {
			return new MyRepositoryImpl();
		}
	}


	@Configuration
	static class RepoConfigB {

		@Bean
		MyRepositoryWithScheduledMethod repository() {
			return new MyRepositoryWithScheduledMethodImpl();
		}
	}


	@Configuration
	@EnableScheduling
	static class Config {

		@Bean
		PlatformTransactionManager txManager() {
			return new CallCountingTransactionManager();
		}

		@Bean
		PersistenceExceptionTranslator peTranslator() {
			return mock(PersistenceExceptionTranslator.class);
		}

		@Bean
		static PersistenceExceptionTranslationPostProcessor peTranslationPostProcessor() {
			return new PersistenceExceptionTranslationPostProcessor();
		}
	}


	@Configuration
	@EnableScheduling
	static class AspectConfig {

		@Bean
		static AnnotationAwareAspectJAutoProxyCreator autoProxyCreator() {
			AnnotationAwareAspectJAutoProxyCreator apc = new AnnotationAwareAspectJAutoProxyCreator();
			apc.setProxyTargetClass(true);
			return apc;
		}

		@Bean
		static MyAspect myAspect() {
			return new MyAspect();
		}
	}


	@Aspect
	public static class MyAspect {

		private final AtomicInteger count = new AtomicInteger(0);

		@org.aspectj.lang.annotation.Before("execution(* scheduled())")
		public void checkTransaction() {
			this.count.incrementAndGet();
		}
	}


	public interface MyRepository {

		int getInvocationCount();
	}


	@Repository
	static class MyRepositoryImpl implements MyRepository {

		private final AtomicInteger count = new AtomicInteger(0);

		@Transactional
		@Scheduled(fixedDelay = 5)
		public void scheduled() {
			this.count.incrementAndGet();
		}

		@Override
		public int getInvocationCount() {
			return this.count.get();
		}
	}


	public interface MyRepositoryWithScheduledMethod {

		int getInvocationCount();

		void scheduled();
	}


	@Repository
	static class MyRepositoryWithScheduledMethodImpl implements MyRepositoryWithScheduledMethod {

		private final AtomicInteger count = new AtomicInteger(0);

		@Autowired(required = false)
		private MyAspect myAspect;

		@Override
		@Transactional
		@Scheduled(fixedDelay = 5)
		public void scheduled() {
			this.count.incrementAndGet();
		}

		@Override
		public int getInvocationCount() {
			if (this.myAspect != null) {
				assertThat(this.myAspect.count.get()).isEqualTo(this.count.get());
			}
			return this.count.get();
		}
	}

}
