/// <summary>
/// Parse optional parameters passed from the console and return the action to perform
/// </summary>
/// <param name="args"></param>
/// <param name="options"></param>
/// <returns>A Command enum that indicates which action will be performed</returns>
private static Command TryParseArgs(string[] args, out Options options)
{
bool showHelp = false;
bool showVersion = false;
bool getCount = false;
Options optionsTmp = options = new Options();
var optionSet = new OptionSet()
{
{ "h|help", "Shows this help message.", v => showHelp = v != null },
{ "c|connection=", "A connection string (can be PostgreSQL or SQLServer or MySQL). For integrated auth, you can use --database and --server instead.", v => optionsTmp.ConnectionString = v },
{ "d|database=", "Generates an integrated auth connection string for the specified database.", v => optionsTmp.Database = v },
{ "s|server=", "Generates an integrated auth connection string with the specified server (default: localhost).", v => optionsTmp.Server = v },
{ "f|folder=", "The folder containing your .sql migration files (defaults to current working directory).", v => optionsTmp.MigrationsFolder = v },
{ "timeout=", "Command timeout duration in seconds (default: 30).", v => optionsTmp.CommandTimeout = int.Parse(v) },
{ "preview", "Run outstanding migrations, but roll them back.", v => optionsTmp.IsPreview = v != null },
{ "p|provider=", "Use a specific database provider options: sqlserver (default), postgresql, mysql.", v => optionsTmp.Provider = optionsTmp.MapDatabaseProvider(v) },
{ "global", "Run all outstanding migrations in a single transaction, if possible.", v => optionsTmp.UseGlobalTransaction = v != null },
{ "table=", "Name of the table used to track migrations (default: Migrations).", v => optionsTmp.MigrationsTable = v },
{ "schema=", "Name of the schema to be used to track migrations (default: dbo for sqlserver, public for postgresql, mysql for mysql).", v => optionsTmp.MigrationsTableSchema = v },
{ "force", "Will rerun modified migrations.", v => optionsTmp.Force = v != null },
{ "version", "Print version number.", v => showVersion = v != null },
{ "count", "Print the number of outstanding migrations.", v => getCount = v != null },
};
try
{
optionSet.Parse(args);
options.Output = Console.Out;
if (!showHelp && !showVersion)
{
optionsTmp.AssertValid();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine();
showHelp = true;
}
if (showVersion)
{
Console.WriteLine($"Minimig --Version {Migrator.GetVersion()}");
Console.WriteLine();
return(Command.None);
}
if (showHelp)
{
ShowHelpMessage(optionSet);
return(Command.None);
}
return(getCount ? Command.GetCount : Command.RunMigrations);
}
private static void Run(string[] args)
{
var cmd = TryParseArgs(args, out Options options);
switch (cmd)
{
case Command.RunMigrations:
var result = Migrator.RunOutstandingMigrations(options);
if (!result.Success)
{
Environment.Exit(1);
}
break;
case Command.GetCount:
var count = Migrator.GetOutstandingMigrationsCount(options);
Console.WriteLine(count + " outstanding migrations");
Console.WriteLine();
break;
}
Environment.Exit(0);
}