Recurring message Masstransit rabbitmq - masstransit

Question

I am trying to implement a heartbeat feature for my application hence was trying to implement recurring message feature from masstransit rabbitmq. I was trying to implement it on the sample given on masstransit's website. Here's all of the code.
namespace MasstransitBasicSample
{
using System;
using System.Threading.Tasks;
using MassTransit;
using MassTransit.Scheduling;
class Program
{
static void Main(string[] args)
{
var bus = Bus.Factory.CreateUsingRabbitMq(sbc =>
{
var host = sbc.Host(new Uri("rabbitmq://localhost"), h =>
{
h.Username("guest");
h.Password("guest");
});
sbc.UseMessageScheduler(new Uri("rabbitmq://localhost/quartz"));
sbc.ReceiveEndpoint(host, "test_queue", ep =>
{
ep.Handler<YourMessage>(context =>
{
return Console.Out.WriteLineAsync($"Received: {context.Message.Text}");
});
ep.Handler<PollExternalSystem>(context =>
{
return Console.Out.WriteLineAsync($"Received: {context.Message}");
});
});
});
bus.Start();
SetRecurring(bus);
Console.WriteLine("Press any key to exit");
Console.ReadKey();
bus.Stop();
}
private static async Task SetRecurring(IBusControl bus)
{
var schedulerEndpoint = await bus.GetSendEndpoint(new Uri("rabbitmq://localhost/quartz"));
var scheduledRecurringMessage = await schedulerEndpoint.ScheduleRecurringSend(
new Uri("rabbitmq://localhost/test_queue"), new PollExternalSystemSchedule(), new PollExternalSystem());
}
}
public class YourMessage { public string Text { get; set; } }
public class PollExternalSystemSchedule : DefaultRecurringSchedule
{
public PollExternalSystemSchedule()
{
CronExpression = "* * * * *"; // this means every minute
}
}
public class PollExternalSystem { }
}
I have created a queue called quartz in my rabbitmq queue.
When i run the application it sends a message to the quartz queue and that message just stays there , it does not go to the test queue.
I was also expecting another message to be sent to the quartz queue after a minute based on the cron expression, that also does not happen.
Is my setup wrong?
Any help would be much appreciated.

Answer 1

You need to run the scheduling service that listens on rabbitmq://localhost/quartz, where your messages are being sent.
The documentation page says:
There is a standalone MassTransit service, MassTransit.QuartzService,
which can be installed and used on servers for this purpose. It is
configured via the App.config file and is a good example of how to
build a standalone MassTransit service.
Alternatively, you can host Quartz scheduling in the same process by using in-memory scheduling, described here, by configuring it like this:
var busControl = Bus.Factory.CreateUsingRabbitMq(cfg =>
{
var host = cfg.Host(new Uri("rabbitmq://localhost/"), h =>
{
h.Username("guest");
h.Password("guest");
});
cfg.UseInMemoryScheduler();
});