spring TransactionAutoConfiguration 源码

springboot TransactionAutoConfiguration 代码

文件路径：/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/transaction/TransactionAutoConfiguration.java

/*
 * Copyright 2012-2022 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.boot.autoconfigure.transaction;

import java.util.stream.Collectors;

import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.ConditionalOnSingleCandidate;
import org.springframework.boot.autoconfigure.data.neo4j.Neo4jDataAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.boot.autoconfigure.transaction.jta.JtaAutoConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.ReactiveTransactionManager;
import org.springframework.transaction.TransactionManager;
import org.springframework.transaction.annotation.AbstractTransactionManagementConfiguration;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.reactive.TransactionalOperator;
import org.springframework.transaction.support.TransactionOperations;
import org.springframework.transaction.support.TransactionTemplate;

/**
 * {@link org.springframework.boot.autoconfigure.EnableAutoConfiguration
 * Auto-configuration} for Spring transaction.
 *
 * @author Stephane Nicoll
 * @since 1.3.0
 */
@AutoConfiguration(after = { JtaAutoConfiguration.class, HibernateJpaAutoConfiguration.class,
		DataSourceTransactionManagerAutoConfiguration.class, Neo4jDataAutoConfiguration.class })
@ConditionalOnClass(PlatformTransactionManager.class)
@EnableConfigurationProperties(TransactionProperties.class)
public class TransactionAutoConfiguration {

	@Bean
	@ConditionalOnMissingBean
	public TransactionManagerCustomizers platformTransactionManagerCustomizers(
			ObjectProvider<PlatformTransactionManagerCustomizer<?>> customizers) {
		return new TransactionManagerCustomizers(customizers.orderedStream().collect(Collectors.toList()));
	}

	@Bean
	@ConditionalOnMissingBean
	@ConditionalOnSingleCandidate(ReactiveTransactionManager.class)
	public TransactionalOperator transactionalOperator(ReactiveTransactionManager transactionManager) {
		return TransactionalOperator.create(transactionManager);
	}

	@Configuration(proxyBeanMethods = false)
	@ConditionalOnSingleCandidate(PlatformTransactionManager.class)
	public static class TransactionTemplateConfiguration {

		@Bean
		@ConditionalOnMissingBean(TransactionOperations.class)
		public TransactionTemplate transactionTemplate(PlatformTransactionManager transactionManager) {
			return new TransactionTemplate(transactionManager);
		}

	}

	@Configuration(proxyBeanMethods = false)
	@ConditionalOnBean(TransactionManager.class)
	@ConditionalOnMissingBean(AbstractTransactionManagementConfiguration.class)
	public static class EnableTransactionManagementConfiguration {

		@Configuration(proxyBeanMethods = false)
		@EnableTransactionManagement(proxyTargetClass = false)
		@ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "false")
		public static class JdkDynamicAutoProxyConfiguration {

		}

		@Configuration(proxyBeanMethods = false)
		@EnableTransactionManagement(proxyTargetClass = true)
		@ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "true",
				matchIfMissing = true)
		public static class CglibAutoProxyConfiguration {

		}

	}

}

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