public override async Task Invoke(IIncomingLogicalMessageContext context, Func <Task> next)
{
var id = getId(context.Message.Instance);
if (id == null)
{
await next();
return;
}
var(entity, version) = await repository.Get(id);
var hasBeenProcessed = await tokenStore.HasBeenProcessed(context.MessageId);
if (hasBeenProcessed)
{
if (entity.OutboxState.ContainsKey(context.MessageId))
{
entity.OutboxState.Remove(context.MessageId);
await repository.Put(entity, version);
}
return; //Duplicate
}
if (!entity.OutboxState.TryGetValue(context.MessageId, out var outboxState))
{
context.Extensions.Set(entity);
var messages = await InvokeMessageHandler(context, next);
outboxState = new OutboxState {
OutgoingMessages = messages.Serialize()
};
entity.OutboxState[context.MessageId] = outboxState;
version = await repository.Put(entity, version);
}
var toDispatch = outboxState.OutgoingMessages.Deserialize();
await Dispatch(toDispatch, context);
await tokenStore.MarkProcessed(context.MessageId);
entity.OutboxState.Remove(context.MessageId);
await repository.Put(entity, version);
}
