public CommandResult Handle(CommandDescriptor commandDescriptor)
{
var commandInstance = GetCommandFromDescriptor(commandDescriptor);
if (commandInstance == null)
return new CommandResult { Exception = new UnknownCommandException(commandDescriptor.Name) };
var result = _commandCoordinator.Handle(commandInstance);
return result;
}
public IEnumerable<CommandResult> HandleForSaga(Guid sagaId, CommandDescriptor[] commandDescriptors)
{
var results = new List<CommandResult>();
var saga = _sagaLibrarian.Get(sagaId);
// Todo : IMPORTANT : We need to treat this as a unit of work with rollbacks if one or more commands fail and some succeed!!!!!!!!!!!
foreach (var commandDescriptor in commandDescriptors)
{
var commandInstance = GetCommandFromDescriptor(commandDescriptor);
if (commandInstance == null) {
var commandResult = CommandResult.ForCommand(commandInstance);
commandResult.Exception = new UnknownCommandException(commandDescriptor.Name);
return new[] { commandResult };
}
results.Add(_commandCoordinator.Handle(saga, commandInstance));
}
return results.ToArray();
}
ICommand GetCommandFromDescriptor(CommandDescriptor commandDescriptor)
{
var commandName = commandDescriptor.Name;
if (_commandTypes.ContainsKey(commandName))
{
var commandInstance = _serializer.FromJson(_commandTypes[commandName], commandDescriptor.Command) as ICommand;
return commandInstance;
}
return null;
}
ICommand GetCommandFromDescriptor(CommandDescriptor commandDescriptor)
{
var commandName = commandDescriptor.Name;
var commandType = _commandTypeManager.GetFromName(commandName);
var commandInstance = _serializer.FromJson(commandType, commandDescriptor.Command) as ICommand;
return commandInstance;
}