/// <summary>
/// When overridden in a derived class, executes the task.
/// </summary>
/// <returns>
/// true if the task successfully executed; otherwise, false.
/// </returns>
public override bool Execute()
{
//
// Load DbPlatform
Type platformType = Type.GetType(DbPlatformType);
IDbPlatform dbPlatform = (IDbPlatform)Activator.CreateInstance(platformType, null);
DbMigrationVersionInfoManager migrationVersionInfoManager =
new DbMigrationVersionInfoManager(dbPlatform, new DbCommandExecutionStrategy(), "SchemaInfo");
long currentMigrationVersion =
MigrationVersionInfoManagerUtil.GetCurrentMigrationVersion(migrationVersionInfoManager, dbPlatform, ConnectionString);
if(targetVersion.HasValue && targetVersion.Value < currentMigrationVersion && !AllowDowngrade)
{
if(BuildEngine != null)
Log.LogError("Could not downgrade from version {0} to version {1}. Review your migration definition or " +
"set 'AllowDowngrade' property to 'true'.", currentMigrationVersion, targetVersion.Value);
return false;
} // if
IMigrationService migrationService = new MigrationService(dbPlatform,
migrationVersionInfoManager,
new DbMigrationScriptExecutive(new DbCommandExecutionStrategy()),
new FileSystemNativeSqlResourceProvider(Directory.GetCurrentDirectory()));
migrationService.Migrated += delegate(object sender, MigrationEventArgs args)
{
if(BuildEngine != null)
Log.LogMessage(MessageImportance.Normal, "Migrated to version {0}", args.Version);
};
using(StreamReader streamReader = new StreamReader(MigrationDefinitionPath))
migrationService.Migrate(ConnectionString, TargetVersion, streamReader);
return true;
}
/// <summary>
/// When overridden in a derived class, executes the task.
/// </summary>
/// <returns>
/// true if the task successfully executed; otherwise, false.
/// </returns>
public override bool Execute()
{
//
// Load IDbPlatforms
Type sourcePlatformType = Type.GetType(SourceDbPlatformType);
Type targetPlatformType = String.IsNullOrEmpty(TargetDbPlatformType) ?
sourcePlatformType :
Type.GetType(TargetDbPlatformType);
IDbPlatform sourceDbPlatform = (IDbPlatform)Activator.CreateInstance(sourcePlatformType, null);
IDbPlatform targetDbPlatform = (IDbPlatform)Activator.CreateInstance(targetPlatformType, null);
IMigrationVersionInfoManager sourceDbMigrationVersionInfoManager =
new DbMigrationVersionInfoManager(sourceDbPlatform, new DbCommandExecutionStrategy(), "SchemaInfo");
IMigrationVersionInfoManager targetDbMigrationVersionInfoManager =
new DbMigrationVersionInfoManager(targetDbPlatform, new DbCommandExecutionStrategy(), "SchemaInfo");
//
// Source database version
long sourceMigrationVersion = MigrationVersionInfoManagerUtil.GetCurrentMigrationVersion(
sourceDbMigrationVersionInfoManager, sourceDbPlatform, SourceConnectionString);
long targetMigrationVersion = MigrationVersionInfoManagerUtil.GetCurrentMigrationVersion(
targetDbMigrationVersionInfoManager, targetDbPlatform, TargetConnectionString);
if(targetMigrationVersion > sourceMigrationVersion && !AllowDowngrade)
{
if(BuildEngine != null)
Log.LogError("Could not downgrade from version {0} to version {1}. Review your migration definition or " +
"set 'AllowDowngrade' property to 'true'.", sourceMigrationVersion, targetMigrationVersion);
return false;
} // if
IMigrationService migrationService =
new MigrationService(targetDbPlatform, targetDbMigrationVersionInfoManager,
new DbMigrationScriptExecutive(new DbCommandExecutionStrategy()),
new FileSystemNativeSqlResourceProvider(Directory.GetCurrentDirectory()));
migrationService.Migrated += delegate(object sender, MigrationEventArgs args)
{
if(BuildEngine != null)
Log.LogMessage(MessageImportance.Normal, "Migrated to version {0}", args.Version);
};
using(StreamReader streamReader = new StreamReader(MigrationDefinitionPath))
migrationService.Migrate(TargetConnectionString, sourceMigrationVersion, streamReader);
return true;
}
static int Main(string[] args)
{
System.Console.WriteLine(Resources.CopyrightInformation,
Assembly.GetExecutingAssembly().GetName().Version.ToString(4),
ApplicationInfo.Milestone);
if(args.Length == 0 || (args.Length == 1 && args[0] == "/?"))
{
System.Console.WriteLine();
System.Console.WriteLine(Resources.UsageInformation);
return 1;
} // if
serviceProvider = new ServiceProvider();
serviceProvider.RegisterService(BuildDbPlatformRegistry());
serviceProvider.RegisterService<IMigrationService>(delegate(IServiceProvider sp)
{
MigrationService migrationService = new MigrationService(
sp.GetService<IDbPlatform>(),
sp.GetService<IMigrationVersionInfoManager>(),
sp.GetService<IMigrationScriptExecutive>(),
sp.GetService<INativeSqlResourceProvider>());
migrationService.Migrating += MigrationServiceMigrating;
migrationService.Migrated += MigrationServiceMigrated;
return migrationService;
});
serviceProvider.RegisterService<IMigrationVersionInfoManager>(delegate(IServiceProvider sp)
{
return new DbMigrationVersionInfoManager(
sp.GetService<IDbPlatform>(),
sp.GetService<IDbCommandExecutionStrategy>(),
"SchemaInfo");
});
serviceProvider.RegisterService<IMigrationScriptExecutive>(delegate(IServiceProvider sp)
{
return new DbMigrationScriptExecutive(
sp.GetService<IDbCommandExecutionStrategy>());
});
serviceProvider.RegisterService(new DeploymentService());
serviceProvider.RegisterService(new ReverseEngineeringService());
serviceProvider.RegisterService(new UtcDateTimeTimestampProvider());
serviceProvider.RegisterService(new FileSystemNativeSqlResourceProvider(Directory.GetCurrentDirectory()));
//
// Prepare Migration Command Registry...
MigrationCommandRegistry migrationCommandRegistry = new MigrationCommandRegistry();
migrationCommandRegistry.RegisterAssembly(typeof(Program).Assembly);
try
{
//
// Parse parameters
MigrationParametersParser parametersParser = new MigrationParametersParser();
parameters = parametersParser.ParseMigrationParameters(args);
//
// If we have an output file name specified, use special IDbCommandExecutionStrategy
if(!string.IsNullOrEmpty(parameters.OutputFileName))
serviceProvider.RegisterService(new FileDbCommandExecutionStrategy(parameters.OutputFileName));
else
serviceProvider.RegisterService(new DbCommandExecutionStrategy());
//
// ...and execute whatever command we need
IMigrationCommand migrationCommand = migrationCommandRegistry.ResolveCommand(parameters.Command);
migrationCommand.ServiceProvider = serviceProvider;
migrationCommand.Execute(parameters);
} // try
catch(MdlParserException e)
{
using(new ConsoleStylingScope(ConsoleColor.Red))
System.Console.WriteLine(System.Environment.NewLine + "Compilation Exception: {0}", e.Message);
return 2;
} // catch
catch(MdlCompilerException e)
{
using(new ConsoleStylingScope(ConsoleColor.Red))
System.Console.WriteLine(System.Environment.NewLine + "Compilation Exception: {0} ({1})", e.Message,
e.Location);
return 3;
} // catch
catch(MigrationException e)
{
using(new ConsoleStylingScope(ConsoleColor.Red))
System.Console.WriteLine(System.Environment.NewLine + "Migration Exception: {0} ({1})", e.Message, e.SqlStatement);
return 4;
} // catch
catch(DbPlatformException e)
{
IDbPlatform dbPlatform = serviceProvider.GetService<DbPlatformRegistry>().ResolvePlatform(parameters.PlatformAlias);
using(new ConsoleStylingScope(ConsoleColor.Red))
System.Console.WriteLine(System.Environment.NewLine + "{0} Exception: {1}",
serviceProvider.GetService<DbPlatformRegistry>().GetPlatformName(dbPlatform), e.Message + e.StackTrace.ToString());
return 5;
} // catch
catch(DbException e)
{
IDbPlatform dbPlatform = serviceProvider.GetService<DbPlatformRegistry>().ResolvePlatform(parameters.PlatformAlias);
using (new ConsoleStylingScope(ConsoleColor.Red))
System.Console.WriteLine(System.Environment.NewLine + "{0} Exception: {1}",
serviceProvider.GetService<DbPlatformRegistry>().GetPlatformName(dbPlatform), e.Message + e.StackTrace.ToString());
return 6;
} // catch
catch(Exception e)
{
using(new ConsoleStylingScope(ConsoleColor.Red))
System.Console.WriteLine(System.Environment.NewLine + "Unknown Exception: {0}", e.ToString());
return 100;
} // catch
return 0;
}
