Mediatr: Mediator pipeline behavior for specific commands

[tool-cmd]

Hi,

I have a project with multiple commands and queries. I need to intercept some specific commands using the Mediator pipeline.
I only see examples with generics, intercepting all the commands. Is there a way to capture only specific commands?
Using Net core 3.1, default DI

Thank you in advance

[lilasquared]

There are a few closed issues that discuss this already that you could search for. What you want is a constrained generic handler. The default dotnet core DI doesn’t support these. You’ll have to switch to a 3rd party DI like Lamar, or you could probably do simple pattern matching in the behavior.

if (request is SomeRequestType)
{
   ...
}

[tool-cmd]

There are a few closed issues that discuss this already that you could search for. What you want is a constrained generic handler. The default dotnet core DI doesn’t support these. You’ll have to switch to a 3rd party DI like Lamar, or you could probably do simple pattern matching in the behavior.

if (request is SomeRequestType)
{
   ...
}

Thanks for your answer @lilasquared
I was seeking for solutions except for pattern matching. Probably I will come back to Action FIlters

[lilasquared]

Switching DI will give you what you want also. Other DIs are far more mature than the built in one.

[jbogard]

Feel free to upvote this PR: https://github.com/dotnet/runtime/pull/39540 it would fix this.