public MigrationRunner(ConnectionInfo connection, Config config)
{
this.connection = connection;
this.force = config.Force;
var migrationPath = config.MigrationPath.IsNullOrEmptyReturn(Environment.CurrentDirectory);
this.migrations = GetPaths(migrationPath).Select(p => new Migration(p)).ToArray();
}
public void Migrate(ConnectionInfo connection, bool force)
{
// ensure migration has not already run
if (connection.Exists("select 1 from Migrations where [Hash] = {0}", Hash))
{
logger.Info("Skipping Migration " + Filename);
if (!connection.Exists("select 1 from Migrations where [Hash] = {0} and Filename = {1}", Hash, Filename))
{
logger.Info("Filename has changed in the database; updating");
connection.Execute("update Migrations set Filename = {0} where [Hash] = {1}", Filename, Hash);
}
return;
}
logger.Info("Running Migration " + Filename);
bool exists = false;
if (connection.Exists("select 1 from Migrations where [Filename] = {0}", Filename))
{
if (!force)
{
throw new ApplicationException("Failed to migrate: " + Filename + " - the file was already migrated in the past, to force migration use the --force command");
}
exists = true;
}
var watch = new System.Diagnostics.Stopwatch();
try
{
watch.Start();
connection.BeginTran();
foreach (var sqlCommand in SqlCommands)
{
connection.Execute(sqlCommand);
}
watch.Stop();
if (exists)
{
connection.Execute("UPDATE Migrations SET [Hash] = {0}, [ExecutionDate] = {1}, [Duration] = {2} WHERE [Filename] = {3}",
Hash,
DateTime.UtcNow,
watch.ElapsedMilliseconds,
Filename
);
}
else
{
connection.Execute("INSERT Migrations([Filename], [Hash], [ExecutionDate], [Duration]) VALUES({0}, {1}, {2}, {3})",
Filename,
Hash,
DateTime.UtcNow,
watch.ElapsedMilliseconds
);
}
connection.CommitTran();
}
catch (Exception e)
{
connection.RollbackTran();
throw new ApplicationException("Failed to run migration: " + Filename + " " + e.Message);
}
}