impl/memory: Disallow empty namespace.

service/info/interface.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 info
 
 import (
         "time"
 
         "golang.org/x/net/context"
 )
 
 // Interface is the interface for all of the package methods which normally
 // would be in the 'appengine' package.
 type Interface interface {
         AppID() string
         FullyQualifiedAppID() string
-        GetNamespace() string
+        GetNamespace() (string, bool)
 
         Datacenter() string
         DefaultVersionHostname() string
         InstanceID() string
         IsDevAppServer() bool
         IsOverQuota(err error) bool
         IsTimeoutError(err error) bool
         ModuleHostname(module, version, instance string) (string, error)
         ModuleName() string
         RequestID() string
@@ skipping 11 matching lines @@
         // Testable returns this Interface's Testable interface. Testing will return
         // nil if testing is not supported in this implementation.
         Testable() Testable
 }
 
 // Testable is an additional set of functions for testing instrumentation.
 type Testable interface {
         SetVersionID(string) context.Context
         SetRequestID(string) context.Context
 }