/*******************************************************************************
* Copyright (c) 2012-2017 Codenvy, S.A.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.eclipse.che.core.db.schema.impl.flyway;
import com.google.inject.Inject;
import com.google.inject.name.Named;
import org.eclipse.che.core.db.schema.SchemaInitializationException;
import org.eclipse.che.core.db.schema.SchemaInitializer;
import org.flywaydb.core.Flyway;
import org.flywaydb.core.internal.dbsupport.DbSupport;
import org.flywaydb.core.internal.dbsupport.DbSupportFactory;
import org.flywaydb.core.internal.util.PlaceholderReplacer;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
/**
* <a href="https://flywaydb.org/">Flyway</a> based schema initializer.
*
* @author Yevhenii Voevodin
*/
public class FlywaySchemaInitializer implements SchemaInitializer {
private final DataSource dataSource;
private final String[] locations;
private final String scriptsPrefix;
private final String scriptsSuffix;
private final String versionSeparator;
private final boolean baselineOnMigrate;
private final String baselineVersion;
private final PlaceholderReplacer placeholderReplacer;
/**
* Creates a new instance of flyway schema initializer.
*
* @param scriptsLocations
* the locations where to search migration scripts,
* if locations is not prefixed or prefixed with <i>classpath:</i>
* then initializer will try to find scripts in classpath using
* {@code Thread.currentThread().}{@link Thread#getContextClassLoader() getContextClassLoader()}
* @param scriptsPrefix
* prefix of migration scripts e.g. 'v' or empty string
* @param scriptsSuffix
* suffix of migration scripts e.g. '.sql'
* @param versionSeparator
* separate version from the other part of script name e.g. '.' or '__'
* @param baselineOnMigrate
* whether to ignore scripts up to the version configured by {@code baselineVersion}
* @param baselineVersion
* up to this version all the scripts ignored, unless schema is initialized first time,
* note that scripts with version equal to baseline version are also ignored
* @param dataSource
* data source used for migrations
* @param placeholderReplacer
* used to replace variables in script with configured values
*/
@Inject
public FlywaySchemaInitializer(@Named("db.schema.flyway.scripts.locations") String[] scriptsLocations,
@Named("db.schema.flyway.scripts.prefix") String scriptsPrefix,
@Named("db.schema.flyway.scripts.suffix") String scriptsSuffix,
@Named("db.schema.flyway.scripts.version_separator") String versionSeparator,
@Named("db.schema.flyway.baseline.enabled") boolean baselineOnMigrate,
@Named("db.schema.flyway.baseline.version") String baselineVersion,
DataSource dataSource,
PlaceholderReplacer placeholderReplacer) {
this.dataSource = dataSource;
this.locations = scriptsLocations;
this.scriptsPrefix = scriptsPrefix;
this.scriptsSuffix = scriptsSuffix;
this.versionSeparator = versionSeparator;
this.baselineOnMigrate = baselineOnMigrate;
this.baselineVersion = baselineVersion;
this.placeholderReplacer = placeholderReplacer;
}
/** Creates a new flyway based initializer with default values. */
public FlywaySchemaInitializer(DataSource dataSource, String... locations) {
this(locations,
"",
".sql",
"__",
false,
"",
dataSource,
PlaceholderReplacer.NO_PLACEHOLDERS);
}
@Override
public void init() throws SchemaInitializationException {
try (final Connection conn = dataSource.getConnection()) {
final Flyway flyway = new Flyway();
flyway.setDataSource(dataSource);
flyway.setLocations(locations);
flyway.setClassLoader(Thread.currentThread().getContextClassLoader());
final DbSupport dbSupport = DbSupportFactory.createDbSupport(conn, true);
final String productName = conn.getMetaData().getDatabaseProductName().toLowerCase();
flyway.setResolvers(new CustomSqlMigrationResolver(productName, dbSupport, placeholderReplacer));
flyway.setSkipDefaultResolvers(true);
flyway.setBaselineOnMigrate(baselineOnMigrate);
if (baselineOnMigrate) {
flyway.setBaselineVersionAsString(baselineVersion);
}
flyway.setSqlMigrationSeparator(versionSeparator);
flyway.setSqlMigrationSuffix(scriptsSuffix);
flyway.setSqlMigrationPrefix(scriptsPrefix);
flyway.migrate();
} catch (SQLException | RuntimeException x) {
throw new SchemaInitializationException(x.getLocalizedMessage(), x);
}
}
}