1 // Copyright 2012 Google Inc. All rights reserved.
2 // Use of this source code is governed by the Apache 2.0
3 // license that can be found in the LICENSE file.
11 "golang.org/x/net/context"
13 "google.golang.org/appengine/internal"
16 // Namespace returns a replacement context that operates within the given namespace.
17 func Namespace(c context.Context, namespace string) (context.Context, error) {
18 if !validNamespace.MatchString(namespace) {
19 return nil, fmt.Errorf("appengine: namespace %q does not match /%s/", namespace, validNamespace)
21 return internal.NamespacedContext(c, namespace), nil
24 // validNamespace matches valid namespace names.
25 var validNamespace = regexp.MustCompile(`^[0-9A-Za-z._-]{0,100}$`)