public ICommandResult <TOutput> Execute <TInput, TOutput>(ISerialization <TInput> input, ISerialization <TOutput> output, TInput data)
{
var either = CommandResult <TOutput> .Check <Argument <TInput>, TInput>(input, output, data, CreateExampleArgument);
if (either.Error != null)
{
return(either.Error);
}
var argument = either.Argument;
var eventType = DomainModel.Find(argument.Name);
if (eventType == null)
{
return
(CommandResult <TOutput> .Fail(
"Couldn't find event type {0}.".With(argument.Name),
@"Example argument:
" + CommandResult <TOutput> .ConvertToString(CreateExampleArgument(output))));
}
var aggregateInterface = eventType.GetInterfaces().FirstOrDefault(it => it.IsGenericType && it.GetGenericTypeDefinition() == typeof(IDomainEvent <>));
var aggregateType = aggregateInterface != null?aggregateInterface.GetGenericArguments()[0] : null;
if (aggregateType == null)
{
return
(CommandResult <TOutput> .Fail(
"{0} does not implement IDomainEvent<TAggregate>.".With(eventType.FullName),
@"Example argument:
" + CommandResult <TOutput> .ConvertToString(CreateExampleArgument(output))));
}
if (!Permissions.CanAccess(eventType))
{
return
(CommandResult <TOutput> .Return(
HttpStatusCode.Forbidden,
default(TOutput),
"You don't have permission to access: {0}.",
eventType.FullName));
}
if (!Permissions.CanAccess(aggregateType))
{
return
(CommandResult <TOutput> .Return(
HttpStatusCode.Forbidden,
default(TOutput),
"You don't have permission to access: {0}.",
aggregateType.FullName));
}
try
{
var commandType = typeof(SubmitEventCommand <,>).MakeGenericType(eventType, aggregateType);
var command = Activator.CreateInstance(commandType) as ISubmitEventCommand;
var result = command.Submit(input, output, Locator, EventStore, argument.Uri, argument.Data);
return(CommandResult <TOutput> .Return(HttpStatusCode.Created, result, "Event applied"));
}
catch (ArgumentException ex)
{
return(CommandResult <TOutput> .Fail(
ex.Message,
ex.GetDetailedExplanation() + @"
Example argument:
" + CommandResult <TOutput> .ConvertToString(CreateExampleArgument(output))));
}
}
