public void Run(ISimpleMigrator migrator, long targetVersion)
{
var currentVersion = migrator.CurrentMigration.Version;
var migrationsToApply = migrator.Migrations.VersionsToBeApplied(currentVersion, targetVersion);
var action = migrator.IsRollBack(targetVersion) ? "Down" : "Up";
foreach (var migration in migrationsToApply)
{
if (migrator.IsRollBack(targetVersion) && migration == migrationsToApply.Last())
{
migrator.MigrateTo(migration.Version);
}
else
{
_outputWriter.Write($"Applying version {migration.Version} ({action}) - {migration.Description}...");
migrator.MigrateTo(migration.Version);
_outputWriter.WriteLine("Done");
}
}
}
private void WriteVersionsToBeApplied(ISimpleMigrator migrator, long targetVersion)
{
var versionsToBeApplied = migrator.Migrations.VersionsToBeAppliedNoop(migrator.CurrentMigration.Version, targetVersion);
_outputWriter.WriteLine("The following migrations will be applied:");
var action = migrator.IsRollBack(targetVersion) ? "Down" : "Up";
foreach (var versionToApply in versionsToBeApplied)
{
_outputWriter.WriteLine($"\t{versionToApply.Version} ({action}) - {versionToApply.Description}");
}
_outputWriter.WriteLine();
}
public void WriteVersionSection(ISimpleMigrator migrator, Settings settings)
{
_outputWriter.WriteLine($"Current database version is {migrator.CurrentMigration.Version}");
_outputWriter.WriteLine();
var migrationAction = migrator.IsRollBack(settings.TargetVersion) ? "Rolling back" : "Updating";
var targetMigration = migrator.Migrations.Single(m => m.Version == settings.TargetVersion);
if (targetMigration == null)
{
return;
}
_outputWriter.WriteLine($"{migrationAction} database");
_outputWriter.WriteLine($"\tfrom:\t{migrator.CurrentMigration.Version} - {migrator.CurrentMigration.Description}");
_outputWriter.WriteLine($"\tto:\t{targetMigration.Version} - {targetMigration.Description}");
_outputWriter.WriteLine();
}