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org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer Maven / Gradle / Ivy
/*
* Copyright 2012-2018 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.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.boot.context.properties.source.InvalidConfigurationPropertyValueException;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.boot.jdbc.DataSourceInitializationMode;
import org.springframework.boot.jdbc.EmbeddedDatabaseConnection;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.jdbc.config.SortedResourcesFactoryBean;
import org.springframework.jdbc.datasource.init.DatabasePopulatorUtils;
import org.springframework.jdbc.datasource.init.ResourceDatabasePopulator;
import org.springframework.util.StringUtils;
/**
* Initialize a {@link DataSource} based on a matching {@link DataSourceProperties}
* config.
*
* @author Dave Syer
* @author Phillip Webb
* @author Eddú Meléndez
* @author Stephane Nicoll
* @author Kazuki Shimizu
*/
class DataSourceInitializer {
private static final Log logger = LogFactory.getLog(DataSourceInitializer.class);
private final DataSource dataSource;
private final DataSourceProperties properties;
private final ResourceLoader resourceLoader;
/**
* Create a new instance with the {@link DataSource} to initialize and its matching
* {@link DataSourceProperties configuration}.
* @param dataSource the datasource to initialize
* @param properties the matching configuration
* @param resourceLoader the resource loader to use (can be null)
*/
DataSourceInitializer(DataSource dataSource, DataSourceProperties properties,
ResourceLoader resourceLoader) {
this.dataSource = dataSource;
this.properties = properties;
this.resourceLoader = (resourceLoader != null ? resourceLoader
: new DefaultResourceLoader());
}
/**
* Create a new instance with the {@link DataSource} to initialize and its matching
* {@link DataSourceProperties configuration}.
* @param dataSource the datasource to initialize
* @param properties the matching configuration
*/
DataSourceInitializer(DataSource dataSource, DataSourceProperties properties) {
this(dataSource, properties, null);
}
public DataSource getDataSource() {
return this.dataSource;
}
/**
* Create the schema if necessary.
* @return {@code true} if the schema was created
* @see DataSourceProperties#getSchema()
*/
public boolean createSchema() {
List scripts = getScripts("spring.datasource.schema",
this.properties.getSchema(), "schema");
if (!scripts.isEmpty()) {
if (!isEnabled()) {
logger.debug("Initialization disabled (not running DDL scripts)");
return false;
}
String username = this.properties.getSchemaUsername();
String password = this.properties.getSchemaPassword();
runScripts(scripts, username, password);
}
return !scripts.isEmpty();
}
/**
* Initialize the schema if necessary.
* @see DataSourceProperties#getData()
*/
public void initSchema() {
List scripts = getScripts("spring.datasource.data",
this.properties.getData(), "data");
if (!scripts.isEmpty()) {
if (!isEnabled()) {
logger.debug("Initialization disabled (not running data scripts)");
return;
}
String username = this.properties.getDataUsername();
String password = this.properties.getDataPassword();
runScripts(scripts, username, password);
}
}
private boolean isEnabled() {
DataSourceInitializationMode mode = this.properties.getInitializationMode();
if (mode == DataSourceInitializationMode.NEVER) {
return false;
}
if (mode == DataSourceInitializationMode.EMBEDDED && !isEmbedded()) {
return false;
}
return true;
}
private boolean isEmbedded() {
try {
return EmbeddedDatabaseConnection.isEmbedded(this.dataSource);
}
catch (Exception ex) {
logger.debug("Could not determine if datasource is embedded", ex);
return false;
}
}
private List getScripts(String propertyName, List resources,
String fallback) {
if (resources != null) {
return getResources(propertyName, resources, true);
}
String platform = this.properties.getPlatform();
List fallbackResources = new ArrayList<>();
fallbackResources.add("classpath*:" + fallback + "-" + platform + ".sql");
fallbackResources.add("classpath*:" + fallback + ".sql");
return getResources(propertyName, fallbackResources, false);
}
private List getResources(String propertyName, List locations,
boolean validate) {
List resources = new ArrayList<>();
for (String location : locations) {
for (Resource resource : doGetResources(location)) {
if (resource.exists()) {
resources.add(resource);
}
else if (validate) {
throw new InvalidConfigurationPropertyValueException(propertyName,
resource, "The specified resource does not exist.");
}
}
}
return resources;
}
private Resource[] doGetResources(String location) {
try {
SortedResourcesFactoryBean factory = new SortedResourcesFactoryBean(
this.resourceLoader, Collections.singletonList(location));
factory.afterPropertiesSet();
return factory.getObject();
}
catch (Exception ex) {
throw new IllegalStateException("Unable to load resources from " + location,
ex);
}
}
private void runScripts(List resources, String username, String password) {
if (resources.isEmpty()) {
return;
}
ResourceDatabasePopulator populator = new ResourceDatabasePopulator();
populator.setContinueOnError(this.properties.isContinueOnError());
populator.setSeparator(this.properties.getSeparator());
if (this.properties.getSqlScriptEncoding() != null) {
populator.setSqlScriptEncoding(this.properties.getSqlScriptEncoding().name());
}
for (Resource resource : resources) {
populator.addScript(resource);
}
DataSource dataSource = this.dataSource;
if (StringUtils.hasText(username) && StringUtils.hasText(password)) {
dataSource = DataSourceBuilder.create(this.properties.getClassLoader())
.driverClassName(this.properties.determineDriverClassName())
.url(this.properties.determineUrl()).username(username)
.password(password).build();
}
DatabasePopulatorUtils.execute(populator, dataSource);
}
}