use provider-qualified name when recursing for chain

pkg/server/internal/provider.go

@@ -1,45 +0,0 @@
-package internal
-
-import (
-	"context"
-	"strings"
-
-	"github.com/containous/traefik/v2/pkg/log"
-)
-
-type contextKey int
-
-const (
-	providerKey contextKey = iota
-)
-
-// AddProviderInContext Adds the provider name in the context
-func AddProviderInContext(ctx context.Context, elementName string) context.Context {
-	parts := strings.Split(elementName, "@")
-	if len(parts) == 1 {
-		log.FromContext(ctx).Debugf("Could not find a provider for %s.", elementName)
-		return ctx
-	}
-
-	if name, ok := ctx.Value(providerKey).(string); ok && name == parts[1] {
-		return ctx
-	}
-
-	return context.WithValue(ctx, providerKey, parts[1])
-}
-
-// GetQualifiedName Gets the fully qualified name.
-func GetQualifiedName(ctx context.Context, elementName string) string {
-	parts := strings.Split(elementName, "@")
-	if len(parts) == 1 {
-		if providerName, ok := ctx.Value(providerKey).(string); ok {
-			return MakeQualifiedName(providerName, parts[0])
-		}
-	}
-	return elementName
-}
-
-// MakeQualifiedName Creates a qualified name for an element
-func MakeQualifiedName(providerName string, elementName string) string {
-	return elementName + "@" + providerName
-}