/// <summary>
/// Collect migrations in one <c>Assembly</c>.
/// </summary>
/// <param name="asm">The <c>Assembly</c> to browse.</param>
private static List<MigrationInfo> GetMigrationInfoList(Assembly asm)
{
var migrations = new List<MigrationInfo>();
foreach (Type type in asm.GetExportedTypes())
{
var attribute = type.GetCustomAttribute<MigrationAttribute>();
if (attribute != null
&& typeof(IMigration).IsAssignableFrom(type)
&& !attribute.Ignore)
{
var mi = new MigrationInfo(type);
migrations.Add(mi);
}
}
migrations.Sort(new MigrationInfoComparer());
// пишем в лог список загруженных миграций
StringBuilder logMessageBuilder = new StringBuilder("Loaded migrations:").AppendLine();
foreach (MigrationInfo mi in migrations)
{
string msg = string.Format("{0} {1}", mi.Version.ToString().PadLeft(5), StringUtils.ToHumanName(mi.Type.Name));
logMessageBuilder.AppendLine(msg);
}
MigratorLogManager.Log.Info(logMessageBuilder.ToString());
return migrations;
}
/// <summary>
/// Создать миграцию по номеру версии
/// </summary>
/// <param name="migrationInfo">Информация о миграции</param>
/// <param name="provider">Провайдер СУБД для установки в качестве текущего провайдера миграции</param>
public IMigration InstantiateMigration(MigrationInfo migrationInfo, ITransformationProvider provider)
{
Require.IsNotNull(provider, "Не задан провайдер СУБД");
Require.IsNotNull(migrationInfo.Type, "Не задан класс миграции");
var migration = (IMigration)Activator.CreateInstance(migrationInfo.Type);
migration.Database = provider;
return migration;
}
