Basic Elastic APM middleware for Goji

goji_apm.go

package main                                                                            
                                                                                        
import (                                                                                
        "fmt"                                                                           
        "net/http"                                                                      
                                                                                        
        "github.com/zenazn/goji"                                                        
        "github.com/zenazn/goji/web"                                                    
        "go.elastic.co/apm/module/apmhttp"                                              
)                                                                                       
                                                                                        
func main() {
        // The Mux.Router middleware must be installed first in order for `web.GetMatch` to work.
        goji.Use(goji.DefaultMux.Router)
  
        // This middleware will extract the matched pattern, and use it for the transaction name.
        goji.Use(func(c *web.C, h http.Handler) http.Handler {                          
                routeRequestName := func(req *http.Request) string {                    
                        pattern := web.GetMatch(*c).RawPattern()                        
                        if pattern == nil {                                             
                                return req.Method + " unknown route"                    
                        }                                                               
                        return fmt.Sprint(pattern)                                      
                }                                                                       
                return apmhttp.Wrap(h, apmhttp.WithServerRequestName(routeRequestName)) 
        })
  
        goji.Get("/hello/:name", func(c web.C, w http.ResponseWriter, r *http.Request) {
                // ...                                                                  
        })                                                                              
        goji.Serve()                                                                    
}