Move code to pkg

middlewares/stripprefixregex/strip_prefix_regex.go

@@ -1,79 +0,0 @@
-package stripprefixregex
-
-import (
-	"context"
-	"net/http"
-	"strings"
-
-	"github.com/containous/mux"
-	"github.com/containous/traefik/config"
-	"github.com/containous/traefik/middlewares"
-	"github.com/containous/traefik/middlewares/stripprefix"
-	"github.com/containous/traefik/tracing"
-	"github.com/opentracing/opentracing-go/ext"
-)
-
-const (
-	typeName = "StripPrefixRegex"
-)
-
-// StripPrefixRegex is a middleware used to strip prefix from an URL request.
-type stripPrefixRegex struct {
-	next   http.Handler
-	router *mux.Router
-	name   string
-}
-
-// New builds a new StripPrefixRegex middleware.
-func New(ctx context.Context, next http.Handler, config config.StripPrefixRegex, name string) (http.Handler, error) {
-	middlewares.GetLogger(ctx, name, typeName).Debug("Creating middleware")
-
-	stripPrefix := stripPrefixRegex{
-		next:   next,
-		router: mux.NewRouter(),
-		name:   name,
-	}
-
-	for _, prefix := range config.Regex {
-		stripPrefix.router.PathPrefix(prefix)
-	}
-
-	return &stripPrefix, nil
-}
-
-func (s *stripPrefixRegex) GetTracingInformation() (string, ext.SpanKindEnum) {
-	return s.name, tracing.SpanKindNoneEnum
-}
-
-func (s *stripPrefixRegex) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
-	var match mux.RouteMatch
-	if s.router.Match(req, &match) {
-		params := make([]string, 0, len(match.Vars)*2)
-		for key, val := range match.Vars {
-			params = append(params, key)
-			params = append(params, val)
-		}
-
-		prefix, err := match.Route.URL(params...)
-		if err != nil || len(prefix.Path) > len(req.URL.Path) {
-			logger := middlewares.GetLogger(req.Context(), s.name, typeName)
-			logger.Error("Error in stripPrefix middleware", err)
-			return
-		}
-
-		req.URL.Path = req.URL.Path[len(prefix.Path):]
-		if req.URL.RawPath != "" {
-			req.URL.RawPath = req.URL.RawPath[len(prefix.Path):]
-		}
-		req.Header.Add(stripprefix.ForwardedPrefixHeader, prefix.Path)
-		req.RequestURI = ensureLeadingSlash(req.URL.RequestURI())
-
-		s.next.ServeHTTP(rw, req)
-		return
-	}
-	http.NotFound(rw, req)
-}
-
-func ensureLeadingSlash(str string) string {
-	return "/" + strings.TrimPrefix(str, "/")
-}