private void RunMigrations(MigrationPlan migrationPlan)
{
if (NoWorkToDo(migrationPlan)) {
Log.Info("No migrations to perform");
return;
}
Log.Info("Starting migrations");
Log.Info("Current version is " + migrationPlan.CurrentVersion);
Log.Info("Target version is " + migrationPlan.TargetVersion);
Log.Info(String.Format("Migrate action is: {0} from {1} to {2}",
(migrationPlan.IsUp ? "UP" : "DOWN"),
migrationPlan.CurrentVersion,
migrationPlan.TargetVersion));
foreach (var step in migrationPlan.OrderedSteps) {
var migrationInfo = step.MigrationInfo;
try {
RunMigration(step);
}
catch (NotSupportedByDialect nse) {
HandleNotSupportedByDialectException(migrationInfo, nse);
}
catch (Exception ex) {
var errorMsg = String.Format("Error running migration {0}: {1}", migrationInfo.Name, ex);
Log.Error(errorMsg);
_dataClient.RollBack();
var args = new MigrationErrorArgs(migrationInfo.Name, ex);
FireOnMigrationError(args);
if (!args.Handled) {
throw new MigrationException(errorMsg, ex);
}
}
}
Log.Info("Done. Current version: " + migrationPlan.TargetVersion);
}
private bool NoWorkToDo(MigrationPlan migrationPlan)
{
return migrationPlan.OrderedSteps.Count == 0;
}
private void RunMigrations(MigrationPlan migrationPlan)
{
if (NoWorkToDo(migrationPlan)) {
Log.Info("No migrations to perform");
return;
}
Log.Info("Starting migrations");
Log.Info("Current version is " + migrationPlan.CurrentVersion);
Log.Info("Target version is " + migrationPlan.TargetVersion);
Log.Info(String.Format("Migrate action is: {0} from {1} to {2}",
(migrationPlan.IsUp ? "UP" : "DOWN"),
migrationPlan.CurrentVersion,
migrationPlan.TargetVersion));
foreach (var migrationInfo in migrationPlan.OrderedMigrationsToRun) {
try {
if (!migrationInfo.MigratesFor(_databaseKind)) {
Log.Info(String.Format(" -> [{0}] {1} {2}() NOT PERFORMED for database {3}", migrationInfo.Version,
migrationInfo.Name, migrationPlan.Direction, _databaseKind));
UpdateCurrentVersion(migrationInfo, migrationPlan.Direction);
return;
}
Log.Info(String.Format(" -> [{0}] {1} {2}()", migrationInfo.Version, migrationInfo.Name, migrationPlan.Direction));
var migration = _migrationFactory.CreateMigration(migrationInfo.MigrationType);
if (migrationPlan.IsUp) {
migration.Up();
}
else {
migration.Down();
}
UpdateCurrentVersion(migrationInfo, migrationPlan.Direction);
}
catch (NotSupportedByDialect nse) {
HandleNotSupportedByDialectException(migrationInfo, nse);
}
catch (Exception ex) {
string errorMsg = String.Format("Error running migration {0}: {1}", migrationInfo.Name, ex);
Log.Error(errorMsg);
_dataClient.RollBack();
throw new MigrationException(errorMsg, ex);
}
}
Log.Info("Done. Current version: " + migrationPlan.TargetVersion);
}
public void Run(long targetVersion)
{
List<MigrationInfo> migrationsFromAssembly = MigrationFinder.FindMigrations(_targetAssembly);
VersionRepository.EnsureSchemaVersionTable(migrationsFromAssembly);
List<long> migrationsFromDatabase = VersionRepository.GetAppliedMigrations();
var migrationPlan = new MigrationPlan(migrationsFromDatabase, migrationsFromAssembly, targetVersion);
RunMigrations(migrationPlan);
}
private bool NoWorkToDo(MigrationPlan migrationPlan)
{
return migrationPlan.OrderedMigrationsToRun.Count == 0;
}
