org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2016 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
*
* http://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.jdbc;
import java.sql.SQLException;
import javax.sql.DataSource;
import javax.sql.XADataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tomcat.jdbc.pool.DataSourceProxy;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
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.SpringBootCondition;
import org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerPostProcessor.Registrar;
import org.springframework.boot.autoconfigure.jdbc.metadata.DataSourcePoolMetadataProvidersConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.context.annotation.Conditional;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.core.type.AnnotatedTypeMetadata;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
/**
* {@link EnableAutoConfiguration Auto-configuration} for {@link DataSource}.
*
* @author Dave Syer
* @author Phillip Webb
* @author Stephane Nicoll
*/
@Configuration
@ConditionalOnClass({ DataSource.class, EmbeddedDatabaseType.class })
@EnableConfigurationProperties(DataSourceProperties.class)
@Import({ Registrar.class, DataSourcePoolMetadataProvidersConfiguration.class })
public class DataSourceAutoConfiguration {
private static final Log logger = LogFactory
.getLog(DataSourceAutoConfiguration.class);
@Bean
@ConditionalOnMissingBean
public DataSourceInitializer dataSourceInitializer() {
return new DataSourceInitializer();
}
/**
* Determines if the {@code dataSource} being used by Spring was created from
* {@link EmbeddedDataSourceConfiguration}.
* @param beanFactory the bean factory
* @return true if the data source was auto-configured.
*/
public static boolean containsAutoConfiguredDataSource(
ConfigurableListableBeanFactory beanFactory) {
try {
BeanDefinition beanDefinition = beanFactory.getBeanDefinition("dataSource");
return EmbeddedDataSourceConfiguration.class.getName()
.equals(beanDefinition.getFactoryBeanName());
}
catch (NoSuchBeanDefinitionException ex) {
return false;
}
}
@Conditional(EmbeddedDatabaseCondition.class)
@ConditionalOnMissingBean({ DataSource.class, XADataSource.class })
@Import(EmbeddedDataSourceConfiguration.class)
protected static class EmbeddedDatabaseConfiguration {
}
@Configuration
@Conditional(PooledDataSourceCondition.class)
@ConditionalOnMissingBean({ DataSource.class, XADataSource.class })
@Import({ DataSourceConfiguration.Tomcat.class, DataSourceConfiguration.Hikari.class,
DataSourceConfiguration.Dbcp.class, DataSourceConfiguration.Dbcp2.class })
protected static class PooledDataSourceConfiguration {
}
@Configuration
@ConditionalOnProperty(prefix = "spring.datasource", name = "jmx-enabled")
@ConditionalOnClass(name = "org.apache.tomcat.jdbc.pool.DataSourceProxy")
@Conditional(DataSourceAutoConfiguration.DataSourceAvailableCondition.class)
@ConditionalOnMissingBean(name = "dataSourceMBean")
protected static class TomcatDataSourceJmxConfiguration {
@Bean
public Object dataSourceMBean(DataSource dataSource) {
if (dataSource instanceof DataSourceProxy) {
try {
return ((DataSourceProxy) dataSource).createPool().getJmxPool();
}
catch (SQLException ex) {
logger.warn("Cannot expose DataSource to JMX (could not connect)");
}
}
return null;
}
}
/**
* {@link Condition} to test if a supported connection pool is available.
*/
static class PooledDataSourceCondition extends SpringBootCondition {
@Override
public ConditionOutcome getMatchOutcome(ConditionContext context,
AnnotatedTypeMetadata metadata) {
if (getDataSourceClassLoader(context) != null) {
return ConditionOutcome.match("supported DataSource class found");
}
return ConditionOutcome.noMatch("missing supported DataSource");
}
/**
* Returns the class loader for the {@link DataSource} class. Used to ensure that
* the driver class can actually be loaded by the data source.
* @param context the condition context
* @return the class loader
*/
private ClassLoader getDataSourceClassLoader(ConditionContext context) {
Class dataSourceClass = new DataSourceBuilder(context.getClassLoader())
.findType();
return (dataSourceClass == null ? null : dataSourceClass.getClassLoader());
}
}
/**
* {@link Condition} to detect when an embedded {@link DataSource} type can be used.
* If a pooled {@link DataSource} is available, it will always be preferred to an
* {@code EmbeddedDatabase}.
*/
static class EmbeddedDatabaseCondition extends SpringBootCondition {
private final SpringBootCondition pooledCondition = new PooledDataSourceCondition();
@Override
public ConditionOutcome getMatchOutcome(ConditionContext context,
AnnotatedTypeMetadata metadata) {
if (anyMatches(context, metadata, this.pooledCondition)) {
return ConditionOutcome.noMatch("supported DataSource class found");
}
EmbeddedDatabaseType type = EmbeddedDatabaseConnection
.get(context.getClassLoader()).getType();
if (type == null) {
return ConditionOutcome.noMatch("no embedded database detected");
}
return ConditionOutcome.match("embedded database " + type + " detected");
}
}
/**
* {@link Condition} to detect when a {@link DataSource} is available (either because
* the user provided one or because one will be auto-configured).
*/
@Order(Ordered.LOWEST_PRECEDENCE - 10)
static class DataSourceAvailableCondition extends SpringBootCondition {
private final SpringBootCondition pooledCondition = new PooledDataSourceCondition();
private final SpringBootCondition embeddedCondition = new EmbeddedDatabaseCondition();
@Override
public ConditionOutcome getMatchOutcome(ConditionContext context,
AnnotatedTypeMetadata metadata) {
if (hasBean(context, DataSource.class)
|| hasBean(context, XADataSource.class)) {
return ConditionOutcome
.match("existing bean configured database detected");
}
if (anyMatches(context, metadata, this.pooledCondition,
this.embeddedCondition)) {
return ConditionOutcome.match("existing auto database detected");
}
return ConditionOutcome.noMatch("no existing bean configured database");
}
private boolean hasBean(ConditionContext context, Class type) {
return BeanFactoryUtils.beanNamesForTypeIncludingAncestors(
context.getBeanFactory(), type, true, false).length > 0;
}
}
}