public async Task <R> Handle(IdentifiedCommand <T, R> request, CancellationToken cancellationToken)
{
if (await manager.ExistAsync(request.Id) || !await manager.CreateRequestForCommandAsync <T>(request.Id))
{
return(await CreateResultForDuplicateRequestAsync(request));
}
logger.LogDebug("---Crated Identitified Request Id : {Id}, CommandName: {CommandType}", request.Id, typeof(T));
return(await mediator.Send(request.Command));
}
protected virtual Task <R> CreateResultForDuplicateRequestAsync(IdentifiedCommand <T, R> request)
{
throw new InvalidCommandException("重复请求", "请求已经收到，正在处理中，请稍后再试.");
}