org.teiid.spring.autoconfigure.MultiDataSourceInitializer Maven / Gradle / Ivy
/*
* Copyright 2012-2017 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.teiid.spring.autoconfigure;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceSchemaCreatedEvent;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationListener;
import org.springframework.core.io.Resource;
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;
import org.teiid.core.TeiidRuntimeException;
/**
* Bean to handle {@link DataSource} initialization by running
* {@literal schema-*.sql} on {@link PostConstruct} and {@literal data-*.sql}
* SQL scripts on a {@link DataSourceInitializedEvent}.
*
* @author Dave Syer
* @author Phillip Webb
* @author Eddú Meléndez
* @author Stephane Nicoll
* @author Kazuki Shimizu
* @since 1.1.0
* @see DataSourceAutoConfiguration
*/
class MultiDataSourceInitializer implements ApplicationListener {
private static final Log logger = LogFactory.getLog(MultiDataSourceInitializer.class);
private final ApplicationContext applicationContext;
private DataSource dataSource;
private boolean initialized = false;
String sourceName;
MultiDataSourceInitializer(DataSource dataSource, String sourceName, ApplicationContext applicationContext) {
this.dataSource = dataSource;
this.sourceName = sourceName;
this.applicationContext = applicationContext;
}
@PostConstruct
public void init() {
if (this.dataSource == null) {
logger.debug("No DataSource found so not initializing");
return;
}
runSchemaScripts();
}
private void runSchemaScripts() {
List resources = null;
if (getProperty("schema") == null) {
resources = Collections.emptyList();
} else {
resources = Arrays.asList(getProperty("schema"));
}
List scripts = getScripts("spring.datasource." + this.sourceName + ".schema", resources, "schema");
if (!scripts.isEmpty()) {
String username = getProperty("schema-username");
String password = getProperty("schema-password");
runScripts(scripts, username, password);
try {
this.applicationContext.publishEvent(new DataSourceSchemaCreatedEvent(this.dataSource));
// The listener might not be registered yet, so don't rely on
// it.
if (!this.initialized) {
runDataScripts();
this.initialized = true;
}
} catch (IllegalStateException ex) {
logger.warn("Could not send event to complete DataSource initialization (" + ex.getMessage() + ")");
}
}
}
@Override
public void onApplicationEvent(DataSourceSchemaCreatedEvent event) {
String initialize = getProperty("initialize");
if (initialize != null && !Boolean.parseBoolean(initialize)) {
logger.debug("Initialization disabled (not running data scripts)");
return;
}
// NOTE the event can happen more than once and
// the event datasource is not used here
if (!this.initialized) {
runDataScripts();
this.initialized = true;
}
}
private void runDataScripts() {
List resources = null;
if (getProperty("data") == null) {
resources = Collections.emptyList();
} else {
resources = Arrays.asList(getProperty("schema"));
}
List scripts = getScripts("spring.datasource." + this.sourceName + ".data", resources, "data");
String username = getProperty("data-username");
String password = getProperty("data-password");
runScripts(scripts, username, password);
}
List getScripts(String propertyName, List resources, String fallback) {
if (resources != null && !resources.isEmpty()) {
return getResources(propertyName, resources, true);
}
String platform = getProperty("platform");
List fallbackResources = new ArrayList();
fallbackResources.add("classpath*:" + fallback + "-" + platform + ".sql");
fallbackResources.add("classpath*:" + fallback + ".sql");
return getResources(propertyName, fallbackResources, false);
}
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 TeiidRuntimeException(resource.getFilename() + " does not exist!");
}
}
}
return resources;
}
private Resource[] doGetResources(String location) {
try {
SortedResourcesFactoryBean factory = new SortedResourcesFactoryBean(this.applicationContext,
Collections.singletonList(location));
factory.afterPropertiesSet();
return factory.getObject();
} catch (Exception ex) {
throw new IllegalStateException("Unable to load resources from " + location, ex);
}
}
private String getProperty(String key) {
String k = "spring.datasource." + this.sourceName + "." + key;
String value = this.applicationContext.getEnvironment().getProperty(k);
if (value == null) {
k = "spring.xa.datasource." + this.sourceName + "." + key;
value = this.applicationContext.getEnvironment().getProperty(k);
}
return value;
}
private void runScripts(List resources, String username, String password) {
if (resources.isEmpty()) {
return;
}
boolean continueOnError = Boolean.parseBoolean(getProperty("continue-on-error"));
ResourceDatabasePopulator populator = new ResourceDatabasePopulator();
populator.setContinueOnError(continueOnError);
populator.setSeparator(getProperty("seperator"));
if (getProperty("sql-script-encoding") != null) {
populator.setSqlScriptEncoding(getProperty("sql-script-encoding"));
}
for (Resource resource : resources) {
populator.addScript(resource);
}
DataSource dataSource = this.dataSource;
if (StringUtils.hasText(username) && StringUtils.hasText(password)) {
String driver = getProperty("driver-class-name");
String url = getProperty("url");
dataSource = DataSourceBuilder.create(this.getClass().getClassLoader()).driverClassName(driver).url(url)
.username(username).password(password).build();
}
DatabasePopulatorUtils.execute(populator, dataSource);
}
}