public M201602092122_CreateECSCluster(MigrationContext context)
{
if (context == null) throw new ArgumentNullException(nameof(context));
_context = context;
_client = CreateClient();
}
public M201512021606_CreatePostgreSQLDatabase(MigrationContext context)
{
if (context == null) throw new ArgumentNullException(nameof(context));
_context = context;
_client = CreateClient();
}
public M201602092130_CreateECSWebTask(MigrationContext context)
{
if (context == null) throw new ArgumentNullException(nameof(context));
_context = context;
_client = CreateClient();
_task = _context.Settings.Cluster.GetTask("web");
}
private IMigration CreateInstance(Type type, MigrationContext context)
{
var constructor = type.GetConstructor(new [] { typeof(MigrationContext) });
if (constructor == null)
{
throw new InvalidOperationException($"Type '{type.FullName}' has no constructor accepting on parameter of type 'MigrationContext'");
}
return constructor.Invoke(new [] { context }) as IMigration;
}
public M201602102134_CreateEC2SecurityGroup(MigrationContext context)
{
if (context == null) throw new ArgumentNullException(nameof(context));
_context = context;
_client = CreateClient();
_cluster = _context.Settings.Cluster;
_groupName = "securityGroup:" + _cluster.Name;
}
private async Task Migrate(MigrationContext context, IEnumerable<Type> migrations, Func<IMigration, Task> action)
{
foreach (var migration in migrations.Select(type => CreateInstance(type, context)))
{
using (_logger.Scope("Execute migration: " + migration.GetType().Name))
{
await Migrate(migration, action);
}
}
}
public M201602102135_CreateEC2WebLoadBalancer(MigrationContext context)
{
if (context == null) throw new ArgumentNullException(nameof(context));
_context = context;
_client = CreateClient();
_ec2client = CreateEc2Client();
_cluster = _context.Settings.Cluster;
_task = _cluster.GetTask("web");
}
private Type[] GetMigrations(MigrationContext context)
{
var types = typeof(Runner)
.GetTypeInfo()
.Assembly
.GetTypes()
.Where(type => typeof(IMigration).IsAssignableFrom(type) && !type.GetTypeInfo().IsAbstract);
var migrations = types.ToArray();
_logger.WriteLine("Migrations found: " + migrations.Length);
return migrations;
}
static async void Main(string[] args)
{
var argument = ArgumentParser.Parse(args);
var setting = new Settings(argument.Settings);
var logger = new Logger();
var context = new MigrationContext(logger, setting);
var runner = new Runner(logger);
if (argument.Command == MigrationCommand.Up)
{
await runner.Up(context);
}
else if (argument.Command == MigrationCommand.Down)
{
await runner.Down(context);
}
WaitForUserIfDebuggerAttached();
}
public async Task Down(MigrationContext context)
{
var migrations = GetMigrations(context);
await Migrate(context, migrations.Reverse(), migration => migration.Down());
}
public async Task Up(MigrationContext context)
{
var migrations = GetMigrations(context);
await Migrate(context, migrations, migration => migration.Up());
}
