What is @preempt and how to use it?

[jsantiago]

I'm confused about the @preempt annotation in plumber is doing. I don't understand what preemption is. The documentation is scarce on this topic.

For context, I'm looking for a way to apply a filter to only specific endpoints. Even if this is not the correct way to do that, I'm still interested in understanding what @preempt does

[andresrcs]

We don't really have enough info to help you out. Could you ask this with a minimal REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help.

If you've never heard of a reprex before, you might want to start by reading this FAQ:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[jsantiago]

Well I don't have a reprex, because I have no code yet . I'm just reading about how plumber works. I don't understand an undocumented concept of plumber, and would like to get more information.

This post is the closest I got to understanding Slack and Plumber, Part Two · R Views seems like @preempt means "don't apply this filter to this endpoint"?