LogDog: Add prefix registration endpoint.

appengine/logdog/coordinator/hierarchy/hierarchy.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package hierarchy
 
 import (
         "crypto/sha256"
         "encoding/base64"
         "encoding/hex"
@@ skipping 191 matching lines @@
                 PathBase: types.StreamPath(r.PathBase),
         }
 
         // Validate our PathBase component.
         if err := l.PathBase.ValidatePartial(); err != nil {
                 return nil, fmt.Errorf("invalid stream path base %q: %v", l.PathBase, err)
         }
 
         // Enter the supplied Project namespace. This will assert the the user has
         // access to the project.
-        if err := coordinator.WithProjectNamespace(&c, l.Project); err != nil {
+        if err := coordinator.WithProjectNamespace(&c, l.Project, coordinator.NamespaceAccessREAD); err != nil {
                 return nil, err
         }
 
         // Determine our ancestor component.
         di := ds.Get(c)
 
         q := ds.NewQuery("_StreamNameComponent")
         q = q.Eq("p", componentEntityParent(l.PathBase))
         if r.StreamOnly {
                 q = q.Eq("s", true)
@@ skipping 43 matching lines @@
 
         return di.NewKey("_StreamNameComponent", string(d), 0, nil), nil
 }
 
 // cursorForKey returns a cursor for the supplied componentID. This cursor will
 // start new queries at the component immediately following this ID.
 func cursorForKey(di ds.Interface, e *componentEntity) string {
         key := di.KeyForObj(e)
         return base64.URLEncoding.EncodeToString([]byte(key.StringID()))
 }