seb-server/src/main/java/ch/ethz/seb/sebserver/webservice/SEBServerMigrationStrategy.java
2022-10-03 12:26:32 +02:00

143 lines
6 KiB
Java

/*
* Copyright (c) 2021 ETH Zürich, Educational Development and Technology (LET)
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
package ch.ethz.seb.sebserver.webservice;
import org.flywaydb.core.Flyway;
import org.flywaydb.core.api.MigrationInfo;
import org.flywaydb.core.api.MigrationInfoService;
import org.flywaydb.core.api.output.ValidateResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.flyway.FlywayMigrationStrategy;
import org.springframework.stereotype.Component;
import ch.ethz.seb.sebserver.SEBServerInit;
import ch.ethz.seb.sebserver.gbl.profile.WebServiceProfile;
import ch.ethz.seb.sebserver.webservice.servicelayer.dao.WebserviceInfoDAO;
@Component
@WebServiceProfile
public class SEBServerMigrationStrategy implements FlywayMigrationStrategy {
private static final Logger log = LoggerFactory.getLogger(SEBServerMigrationStrategy.class);
private final boolean cleanDBOnStartup;
private final WebserviceInfo webserviceInfo;
private final WebserviceInfoDAO webserviceInfoDAO;
private Flyway flyway;
public SEBServerMigrationStrategy(
final WebserviceInfo webserviceInfo,
final WebserviceInfoDAO webserviceInfoDAO,
@Value("${sebserver.webservice.clean-db-on-startup:false}") final boolean cleanDBOnStartup) {
this.webserviceInfo = webserviceInfo;
this.webserviceInfoDAO = webserviceInfoDAO;
this.cleanDBOnStartup = cleanDBOnStartup;
}
@Override
public void migrate(final Flyway flyway) {
this.flyway = flyway;
}
public void applyMigration() {
if (this.webserviceInfo.hasProfile("test")) {
SEBServerInit.INIT_LOGGER.info("No migration applies for test profile");
return;
}
final String webserviceUUID = this.webserviceInfo.getWebserviceUUID();
try {
SEBServerInit.INIT_LOGGER.info("----> ** Migration check START **");
SEBServerInit.INIT_LOGGER.info("----> Check database status");
final MigrationInfoService info = this.flyway.info();
if (SEBServerInit.INIT_LOGGER.isDebugEnabled()) {
SEBServerInit.INIT_LOGGER.debug("----> ** Migration Info **");
SEBServerInit.INIT_LOGGER.debug("----> {}", info);
}
final MigrationInfo[] pendingMigrations = info.pending();
if (pendingMigrations != null && pendingMigrations.length > 0) {
SEBServerInit.INIT_LOGGER.info("----> Found pending migrations: {}", pendingMigrations.length);
// If we are in a distributed setup only apply migration task if this is the master service
// or if there was no data base initialization yet at all.
if (this.webserviceInfo.isDistributed() && this.webserviceInfoDAO.isInitialized()) {
SEBServerInit.INIT_LOGGER.info("----> This is distributed setup, check master...");
if (this.webserviceInfoDAO.isInitialized()) {
final boolean isMaster = this.webserviceInfoDAO.isMaster(webserviceUUID);
if (!isMaster) {
SEBServerInit.INIT_LOGGER.info(
"----> Skip migration task since this is not a master instance: {}",
this.webserviceInfo.getWebserviceUUID());
} else {
doMigration();
}
}
} else {
doMigration();
}
} else {
SEBServerInit.INIT_LOGGER.info("----> ");
SEBServerInit.INIT_LOGGER.info("----> No pending migrations found. Last migration --> {} --> {}",
info.current().getVersion(),
info.current().getDescription());
}
SEBServerInit.INIT_LOGGER.info("----> ** Migration check END **");
} catch (final Exception e) {
log.error("Failed to apply migration task: ", e);
}
}
private void doMigration() {
SEBServerInit.INIT_LOGGER.info("----> *********************************************************");
SEBServerInit.INIT_LOGGER.info("----> **** Start Migration ************************************");
if (this.cleanDBOnStartup) {
SEBServerInit.INIT_LOGGER
.info("----> !!! Cleanup database as it was set on sebserver.webservice.clean-db-on-startup !!!");
this.flyway.clean();
}
// repair checksum mismatch if needed
final ValidateResult validateWithResult = this.flyway.validateWithResult();
if (!validateWithResult.validationSuccessful
&& validateWithResult.getAllErrorMessages().contains("checksum mismatch")) {
SEBServerInit.INIT_LOGGER.info("----> Migration validation checksum mismatch error detected: ");
SEBServerInit.INIT_LOGGER.info("----> {}", validateWithResult.getAllErrorMessages());
SEBServerInit.INIT_LOGGER.info("----> Try to run repair task...");
this.flyway.repair();
}
this.flyway.migrate();
final MigrationInfoService info = this.flyway.info();
SEBServerInit.INIT_LOGGER.info("----> Migration finished, new current version is: {} --> {}",
info.current().getVersion(),
info.current().getDescription());
SEBServerInit.INIT_LOGGER.info("----> **** End Migration **************************************");
SEBServerInit.INIT_LOGGER.info("----> *********************************************************");
}
}