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package moe.yuuta.dn42peering.database;
import io.vertx.core.Future;
import io.vertx.core.Vertx;
import io.vertx.core.impl.logging.Logger;
import io.vertx.core.impl.logging.LoggerFactory;
import org.flywaydb.core.Flyway;
import org.flywaydb.core.api.configuration.FluentConfiguration;
import org.flywaydb.core.api.output.MigrateResult;
import org.flywaydb.core.api.output.RepairResult;
import javax.annotation.Nonnull;
import java.util.stream.Collectors;
public class DatabaseMigration {
private static final Logger logger = LoggerFactory.getLogger(DatabaseMigration.class.getSimpleName());
public static Future<Void> autoMigrate(@Nonnull Vertx vertx,
@Nonnull DatabaseConfiguration configuration) {
return vertx.executeBlocking(f -> {
if(configuration.migrateAction == DatabaseConfiguration.MigrateAction.DISABLED) {
logger.warn("Database migration is disabled. Use with care.");
f.complete();
return;
}
final FluentConfiguration flywayConfig = Flyway.configure()
.dataSource(String.format("jdbc:mariadb://%s:%d/%s",
configuration.host,
configuration.port,
configuration.database),
configuration.user,
configuration.password);
if(configuration.migrateAction == DatabaseConfiguration.MigrateAction.AUTO_NO_BASELINE) {
logger.warn("Baseline migration is disabled. The migration will fail if the " +
"database is dirty.");
} else {
flywayConfig
.baselineOnMigrate(true)
.baselineVersion("3");
}
final Flyway flyway = flywayConfig.load();
switch (configuration.migrateAction) {
case AUTO:
case AUTO_NO_BASELINE:
logger.info("Starting database migration");
final MigrateResult result = flyway.migrate();
String warningPrompt;
if(result.warnings == null || result.warnings.isEmpty()) {
warningPrompt = "No warnings produced.";
} else {
warningPrompt = result.warnings.toString();
}
logger.info(String.format("Migration completed. " +
"Processed %d migrations.\n" +
"From %s to %s.\n" +
"%s",
result.migrationsExecuted,
result.initialSchemaVersion,
result.targetSchemaVersion,
warningPrompt));
f.complete();
return;
case REPAIR:
logger.warn("Repair mode enabled. Make sure " +
"you had already followed the instructions to undo failed migrations.\n" +
"Also remember to turn repair mode off after you finished.\n" +
"Repair mode will only cleanup upgrade history. All leftover migrations (half-completed " +
"changes) must be cleaned yourself. Good luck!");
final RepairResult repairResult = flyway.repair();
logger.warn(String.format("Repair completed.\n" +
"Repair actions: %s\n" +
"Removed migrations: %s\n" +
"Deleted migrations: %s\n" +
"Aligned migrations: %s",
repairResult.repairActions,
repairResult.migrationsRemoved == null ? "Empty" :
repairResult.migrationsRemoved.stream().map(output -> output.version).collect(Collectors.toList()),
repairResult.migrationsDeleted == null ? "Empty" :
repairResult.migrationsDeleted.stream().map(output -> output.version).collect(Collectors.toList()),
repairResult.migrationsAligned == null ? "Empty" :
repairResult.migrationsAligned.stream().map(output -> output.version).collect(Collectors.toList())));
f.fail(new ShutdownException());
return;
}
});
}
public static class ShutdownException extends Exception {}
}
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