is it possible to get the registered path? about httprouter

[jehiah]

This functionality was made available in master (but not yet released)

https://pkg.go.dev/github.com/julienschmidt/httprouter@master#Router.SaveMatchedRoutePath
https://pkg.go.dev/github.com/julienschmidt/httprouter@master#Params.MatchedRoutePath

router.SaveMatchedRoutePath=true
// in request
registeredPath := ps.MatchedRoutePath()

[MattKetmo]

@julienschmidt any chance to have a new tagged release for all commits since 2019?

[jairogloz]

I am also looking for this feature 😃 I'm using prometheus to instrument my code and I'd like to use each endpoint path as label for each of my metrics, but right now, for paths using url params I get a different path for every id that I use, which is wrong because I end up with n different metrics instead of one.

[jairogloz]

I came up with a quick hack. Inside your handler, you can iterate over ps httprouter.Params (which is internally a []{key, value}) and then in your request.URL.Path, replace each value by it's key, preceded by a :. Like this:

registeredPath := request.URL.Path
for _, param := range ps {
	registeredPath = strings.Replace(registeredPath, param.Value, fmt.Sprintf(":%s", param.Key), 1)
}
fmt.Println(registeredPath)

And you can do the same with router.LookUp as it returns httprouter.Params as well.

Not the most elegant solution but it gets the job done. Hope it helps.