org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerInvoker Maven / Gradle / Ivy
/*
* Copyright 2012-2019 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.boot.autoconfigure.jdbc;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationListener;
import org.springframework.core.log.LogMessage;
/**
* Bean to handle {@link DataSource} initialization by running {@literal schema-*.sql} on
* {@link InitializingBean#afterPropertiesSet()} and {@literal data-*.sql} SQL scripts on
* a {@link DataSourceSchemaCreatedEvent}.
*
* @author Stephane Nicoll
* @see DataSourceAutoConfiguration
*/
class DataSourceInitializerInvoker implements ApplicationListener, InitializingBean {
private static final Log logger = LogFactory.getLog(DataSourceInitializerInvoker.class);
private final ObjectProvider dataSource;
private final DataSourceProperties properties;
private final ApplicationContext applicationContext;
private DataSourceInitializer dataSourceInitializer;
private boolean initialized;
DataSourceInitializerInvoker(ObjectProvider dataSource, DataSourceProperties properties,
ApplicationContext applicationContext) {
this.dataSource = dataSource;
this.properties = properties;
this.applicationContext = applicationContext;
}
@Override
public void afterPropertiesSet() {
DataSourceInitializer initializer = getDataSourceInitializer();
if (initializer != null) {
boolean schemaCreated = this.dataSourceInitializer.createSchema();
if (schemaCreated) {
initialize(initializer);
}
}
}
private void initialize(DataSourceInitializer initializer) {
try {
this.applicationContext.publishEvent(new DataSourceSchemaCreatedEvent(initializer.getDataSource()));
// The listener might not be registered yet, so don't rely on it.
if (!this.initialized) {
this.dataSourceInitializer.initSchema();
this.initialized = true;
}
}
catch (IllegalStateException ex) {
logger.warn(LogMessage.format("Could not send event to complete DataSource initialization (%s)",
ex.getMessage()));
}
}
@Override
public void onApplicationEvent(DataSourceSchemaCreatedEvent event) {
// NOTE the event can happen more than once and
// the event datasource is not used here
DataSourceInitializer initializer = getDataSourceInitializer();
if (!this.initialized && initializer != null) {
initializer.initSchema();
this.initialized = true;
}
}
private DataSourceInitializer getDataSourceInitializer() {
if (this.dataSourceInitializer == null) {
DataSource ds = this.dataSource.getIfUnique();
if (ds != null) {
this.dataSourceInitializer = new DataSourceInitializer(ds, this.properties, this.applicationContext);
}
}
return this.dataSourceInitializer;
}
}