Updating MassTransit from version 7.1.5 to 7.2.2

I try to keep the technical debt in my applications under control by keeping the used dependencies up-to-date as much as possible. Everytime I have to make a small change to an application, I reserve some time to update outdated packages. This helps me to avoid big-bang migrations where the risk is high and updating can take a long time.

Today I had to make a small update to an application that was using MassTransit. I used the opportunity to upgrade the application from MassTransit v7.1.5 to v7.2.2 .

After upgrading the NuGet packages, Visual Studio showed the following errors and warnings:

Let’s walk through the steps I took to get rid of them.

First I replaced:

	builder.AddMassTransit(x =>
	{
	x.AddRabbitMqMessageScheduler();
	});

view raw AddMassTransit1.cs hosted with ❤ by GitHub

With:

	builder.AddMassTransit(x =>
	{
	x.AddDelayedMessageScheduler();
	});

view raw AddMassTransit2.cs hosted with ❤ by GitHub

Afterwards I replaced

	x.UsingRabbitMq((context, cfg) =>
	{
	cfg.UseDelayedExchangeMessageScheduler();
	});

view raw UsingRabbitMQ1.cs hosted with ❤ by GitHub

by:

	x.UsingRabbitMq((context, cfg) =>
	{
	cfg.UseDelayedMessageScheduler();
	});

view raw UsingRabbitMQ2.cs hosted with ❤ by GitHub

There was a namespace change, so I had to add an extra using:

using MassTransit.JobService.Configuration;

view raw MassTransitUsing.cs hosted with ❤ by GitHub

Almost there. I also had to replace:

	var options = new ServiceInstanceOptions()
	.EnableInstanceEndpoint()
	.SetEndpointNameFormatter(formatter);

view raw MassTransitOptions1.cs hosted with ❤ by GitHub

by:

	var options = new ServiceInstanceOptions()
	.EnableJobServiceEndpoints()
	.SetEndpointNameFormatter(formatter);

view raw MassTransitOptions2.cs hosted with ❤ by GitHub

As a final step I could remove the following line:

x.AddServiceClient();

view raw AddServiceClient.cs hosted with ❤ by GitHub