/// <summary>
/// Migrates the database to the latest version
/// </summary>
/// <returns>The number of applied migrations</returns>
public int RunPendingMigrations(TContext context)
{
var pendingMigrations = GetPendingMigrations().ToList();
if (!pendingMigrations.Any())
{
return(0);
}
var coreSeeders = new List <SeederEntry>();
var externalSeeders = new List <SeederEntry>();
var isCoreMigration = context is SmartObjectContext;
var initialMigration = this.GetDatabaseMigrations().LastOrDefault() ?? "[Initial]";
var lastSuccessfulMigration = initialMigration;
IDataSeeder <SmartObjectContext> coreSeeder = null;
IDataSeeder <TContext> externalSeeder = null;
int result = 0;
_isMigrating = true;
// Apply migrations
foreach (var migrationId in pendingMigrations)
{
if (MigratorUtils.IsAutomaticMigration(migrationId))
{
continue;
}
if (!MigratorUtils.IsValidMigrationId(migrationId))
{
continue;
}
// Resolve and instantiate the DbMigration instance from the assembly
var migration = MigratorUtils.CreateMigrationInstanceByMigrationId(migrationId, Configuration);
// Seeders for the core DbContext must be run in any case
// (e.g. for Resource or Setting updates even from external plugins)
coreSeeder = migration as IDataSeeder <SmartObjectContext>;
externalSeeder = null;
if (!isCoreMigration)
{
// Context specific seeders should only be resolved
// when origin is external (e.g. a Plugin)
externalSeeder = migration as IDataSeeder <TContext>;
}
try
{
// Call the actual Update() to execute this migration
Update(migrationId);
result++;
}
catch (AutomaticMigrationsDisabledException)
{
if (context is SmartObjectContext)
{
_isMigrating = false;
throw;
}
// DbContexts in plugin assemblies tend to produce
// this error, but obviously without any negative side-effect.
// Therefore catch and forget!
// TODO: (MC) investigate this and implement a cleaner solution
}
catch (Exception ex)
{
result = 0;
_isMigrating = false;
throw new DbMigrationException(lastSuccessfulMigration, migrationId, ex.InnerException ?? ex, false);
}
if (coreSeeder != null)
{
coreSeeders.Add(new SeederEntry {
DataSeeder = coreSeeder,
MigrationId = migrationId,
PreviousMigrationId = lastSuccessfulMigration,
});
}
if (externalSeeder != null)
{
externalSeeders.Add(new SeederEntry {
DataSeeder = externalSeeder,
MigrationId = migrationId,
PreviousMigrationId = lastSuccessfulMigration,
});
}
lastSuccessfulMigration = migrationId;
}
// Apply core data seeders first
SmartObjectContext coreContext = null;
if (coreSeeders.Any())
{
coreContext = isCoreMigration ? context as SmartObjectContext : new SmartObjectContext();
RunSeeders <SmartObjectContext>(coreSeeders, coreContext);
}
// Apply external data seeders
RunSeeders <TContext>(externalSeeders, context);
_isMigrating = false;
Logger.Info("Database migration successful: {0} >> {1}".FormatInvariant(initialMigration, lastSuccessfulMigration));
return(result);
}
/// <summary>
/// Migrates the database to the latest version
/// </summary>
/// <returns>The number of applied migrations</returns>
public int RunPendingMigrations(TContext context)
{
if (_lastSeedException != null)
{
// This can happen when a previous migration attempt failed with a rollback.
//return 0;
throw _lastSeedException;
}
var pendingMigrations = GetPendingMigrations().ToList();
if (!pendingMigrations.Any())
{
return(0);
}
// There are pending migrations and the app version is 3.0.0 at least.
// Earlier versions are totally blocked by AppUpdater.
// We have to ensure that the initial migration - which is '201705281903241_MoreIndexes'
// after squashing old 2.x and 1.x migrations - does not run if current head is '201705102339006_V3Final'.
DbMigrationContext.Current.SetSuppressInitialCreate <TContext>(true);
var coreSeeders = new List <SeederEntry>();
var externalSeeders = new List <SeederEntry>();
var isCoreMigration = context is SmartObjectContext;
var databaseMigrations = this.GetDatabaseMigrations().ToArray();
var initialMigration = databaseMigrations.LastOrDefault() ?? "[Initial]";
var lastSuccessfulMigration = databaseMigrations.FirstOrDefault();
int result = 0;
_isMigrating = true;
// Apply migrations
foreach (var migrationId in pendingMigrations)
{
if (MigratorUtils.IsAutomaticMigration(migrationId))
{
continue;
}
if (!MigratorUtils.IsValidMigrationId(migrationId))
{
continue;
}
// Resolve and instantiate the DbMigration instance from the assembly
var migration = MigratorUtils.CreateMigrationInstanceByMigrationId(migrationId, Configuration);
// Seeders for the core DbContext must be run in any case
// (e.g. for Resource or Setting updates even from external plugins)
var coreSeeder = migration as IDataSeeder <SmartObjectContext>;
IDataSeeder <TContext> externalSeeder = null;
if (!isCoreMigration)
{
// Context specific seeders should only be resolved
// when origin is external (e.g. a Plugin)
externalSeeder = migration as IDataSeeder <TContext>;
}
try
{
// Call the actual Update() to execute this migration
Update(migrationId);
result++;
}
catch (AutomaticMigrationsDisabledException)
{
if (context is SmartObjectContext)
{
_isMigrating = false;
throw;
}
// DbContexts in plugin assemblies tend to produce
// this error, but obviously without any negative side-effect.
// Therefore catch and forget!
// TODO: (MC) investigate this and implement a cleaner solution
}
catch (Exception ex)
{
result = 0;
_isMigrating = false;
throw new DbMigrationException(lastSuccessfulMigration, migrationId, ex.InnerException ?? ex, false);
}
var migrationName = MigratorUtils.GetMigrationClassName(migrationId);
if (coreSeeder != null)
{
coreSeeders.Add(new SeederEntry
{
DataSeeder = coreSeeder,
MigrationId = migrationId,
MigrationName = migrationName,
PreviousMigrationId = lastSuccessfulMigration,
});
}
if (externalSeeder != null)
{
externalSeeders.Add(new SeederEntry
{
DataSeeder = externalSeeder,
MigrationId = migrationId,
MigrationName = migrationName,
PreviousMigrationId = lastSuccessfulMigration,
});
}
lastSuccessfulMigration = migrationId;
DbMigrationContext.Current.AddAppliedMigration(typeof(TContext), migrationId);
}
if (coreSeeders.Any())
{
// Apply core data seeders first
var coreContext = isCoreMigration ? context as SmartObjectContext : new SmartObjectContext();
RunSeeders <SmartObjectContext>(coreSeeders, coreContext);
}
// Apply external data seeders
RunSeeders <TContext>(externalSeeders, context);
_isMigrating = false;
Logger.Info("Database migration successful: {0} >> {1}".FormatInvariant(initialMigration, lastSuccessfulMigration));
return(result);
}