public void Migrate(DatabaseConnectionInfo databaseConnectionInfo, MigrationInfo migrationInfo)
{
using (var connection = _connectionFactory.Create(databaseConnectionInfo))
{
Output.Text("Connected to oracle database on connection string '{0}'.".FormatWith(databaseConnectionInfo.ConnectionString));
Output.EmptyLine();
Output.Text("Checking for the current database version.");
var oracleMetadataProvider = _databaseMetadataProviderFactory.Create(connection);
var oracleVersioning = _versionRespositoryFactory.Create(connection);
var oracleAppliedScriptsRepository = _appliedScriptsRepositoryFactory.Create(connection);
var currentVersion = oracleMetadataProvider.SchemaExists(migrationInfo.TargetSchema) ? oracleVersioning.GetCurrentVersion(migrationInfo.TargetSchema) : null;
Output.Info("The current database version is: {0}".FormatWith(currentVersion.IsNotNull() ? currentVersion.Version.ToString(CultureInfo.InvariantCulture) : "<empty>"));
Output.EmptyLine();
Output.Info("Scanning input folder '{0}' for scripts...".FormatWith(migrationInfo.ScriptFolder));
var initScripts = ScanForScripts(migrationInfo, ScriptFolders.Init, _scriptScannerFactory.Create(ScriptFolders.Init)).ToArray();
var upScripts = ScanForScripts(migrationInfo, ScriptFolders.Up, _scriptScannerFactory.Create(ScriptFolders.Up)).ToArray();
var downScripts = ScanForScripts(migrationInfo, ScriptFolders.Down, _scriptScannerFactory.Create(ScriptFolders.Down)).ToArray();
var termScripts = ScanForScripts(migrationInfo, ScriptFolders.Term, _scriptScannerFactory.Create(ScriptFolders.Term)).ToArray();
Output.EmptyLine();
if (migrationInfo.TargetVersion.HasValue)
{
Output.Info("Target database version was provided, will target migrating the database to version {0}".FormatWith(migrationInfo.TargetVersion.Value));
}
VerifyDownScripts(upScripts, downScripts);
var storedMigrationSteps = new List<IStep>();
if (migrationInfo.UseStored)
{
Output.Info("--usestored was specified, fetching set of applied scripts stored in the target database...".FormatWith());
storedMigrationSteps = oracleAppliedScriptsRepository.GetAppliedScripts(migrationInfo.TargetSchema).ToList();
Output.Text(" {0} stored applied scripts found.".FormatWith(storedMigrationSteps.Count));
Output.EmptyLine();
}
var scriptRunner = _scriptRunnerFactory.Create(databaseConnectionInfo);
RunMigration(migrationInfo, currentVersion, initScripts, upScripts, downScripts, termScripts, storedMigrationSteps, scriptRunner, oracleMetadataProvider, oracleVersioning, oracleAppliedScriptsRepository);
if (oracleMetadataProvider.SchemaExists(migrationInfo.TargetSchema))
{
var newVersion = oracleVersioning.GetCurrentVersion(migrationInfo.TargetSchema);
Output.Info("Database version is now: {0}".FormatWith(newVersion.IsNotNull() ? newVersion.Version.ToString(CultureInfo.InvariantCulture) : "<empty>"));
}
else
{
Output.Info("Target schema '{0}' no longer exists.".FormatWith(migrationInfo.TargetSchema));
}
}
}
private static IEnumerable<Script> ScanForScripts(MigrationInfo migrationInfo, string migrationFolder, IScriptScanner scanner)
{
var environments = (migrationInfo.TargetEnvironment ?? Enumerable.Empty<string>()).ToArray();
var scripts = (scanner.Scan(migrationInfo.ScriptFolder.Whack(migrationFolder), environments) ?? Enumerable.Empty<Script>()).ToArray();
Output.Text("Found {0} '{1}' scripts.".FormatWith(scripts.Length, migrationFolder));
foreach (var script in scripts)
{
Output.Verbose(script.Name, 1);
}
return scripts;
}
private static void RunMigration(MigrationInfo migrationInfo, DatabaseVersion currentVersion, IEnumerable<Script> initScripts, IEnumerable<Script> upScripts, IEnumerable<Script> downScripts, IEnumerable<Script> termScripts,
IList<IStep> storedSteps, IScriptRunner scriptRunner, IDatabaseMetadataProvider databaseMetadataProvider, IVersionRespository versionRespository, IAppliedScriptsRepository appliedScriptsRepository)
{
var upDownSteps = upScripts.Select(u => new DatabaseStep(u, downScripts.FirstOrDefault(d => d.Version == u.Version))).ToList();
var initTermSteps = initScripts.Select(i => new DatabaseStep(i, termScripts.FirstOrDefault(t => t.Version == i.Version))).ToList();
if (migrationInfo.Direction == MigrationDirection.Down)
{
var downMigration = new DownMigration(databaseMetadataProvider, versionRespository, appliedScriptsRepository, migrationInfo.Forced);
if (storedSteps.Any())
{
Output.Warn("NOTE: Using stored applied scripts to perform downgrade instead of local 'down' scripts.");
downMigration.Migrate(storedSteps, currentVersion, migrationInfo.TargetVersion, scriptRunner, migrationInfo.TargetSchema, migrationInfo.TargetTablespace);
}
else
{
downMigration.Migrate(upDownSteps, currentVersion, migrationInfo.TargetVersion, scriptRunner, migrationInfo.TargetSchema, migrationInfo.TargetTablespace);
}
if (!migrationInfo.TargetVersion.HasValue)
{
var termMigration = new TermMigration(databaseMetadataProvider, migrationInfo.Forced);
termMigration.Migrate(initTermSteps, currentVersion, migrationInfo.TargetVersion, scriptRunner, migrationInfo.TargetSchema, migrationInfo.TargetTablespace);
}
else
{
Output.Info("A target version was provided, termination scripts will not be executed.");
}
}
else
{
var initMigration = new InitMigration(databaseMetadataProvider, migrationInfo.Forced);
initMigration.Migrate(initTermSteps, currentVersion, migrationInfo.TargetVersion, scriptRunner, migrationInfo.TargetSchema, migrationInfo.TargetTablespace);
EnsureVersioningTableIsInitialised(versionRespository, migrationInfo.TargetSchema, migrationInfo.TargetTablespace);
EnsureAppliedScriptsTableIsInitialised(appliedScriptsRepository, migrationInfo.TargetSchema, migrationInfo.TargetTablespace);
var upMigration = new UpMigration(versionRespository, appliedScriptsRepository, migrationInfo.Forced);
upMigration.Migrate(upDownSteps, currentVersion, migrationInfo.TargetVersion, scriptRunner, migrationInfo.TargetSchema, migrationInfo.TargetTablespace);
}
}
