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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 package memory | |
| 6 | |
| 7 import ( | |
| 8 "fmt" | |
| 9 "regexp" | |
| 10 | |
| 11 "github.com/luci/gae/impl/dummy" | |
| 12 "github.com/luci/gae/service/info" | |
| 13 "golang.org/x/net/context" | |
| 14 ) | |
| 15 | |
| 16 type giContextKeyType int | |
| 17 | |
| 18 var giContextKey giContextKeyType | |
| 19 | |
| 20 // validNamespace matches valid namespace names. | |
| 21 var validNamespace = regexp.MustCompile(`^[0-9A-Za-z._-]{0,100}$`) | |
| 22 | |
| 23 func curGID(c context.Context) *globalInfoData { | |
| 24 return c.Value(giContextKey).(*globalInfoData) | |
| 25 } | |
| 26 | |
| 27 // useGI adds a gae.GlobalInfo context, accessible | |
| 28 // by gae.GetGI(c) | |
| 29 func useGI(c context.Context) context.Context { | |
| 30 return info.SetFactory(c, func(ic context.Context) info.Interface { | |
| 31 return &giImpl{dummy.Info(), curGID(ic), ic} | |
| 32 }) | |
| 33 } | |
| 34 | |
| 35 // globalAppID is the 'AppID' of everythin returned from this memory | |
| 36 // implementation (DSKeys, GlobalInfo, etc.). There's no way to modify this | |
| 37 // value through the API, and there are a couple bits of code where it's hard to | |
| 38 // route this value through to without making the internal APIs really complex. | |
| 39 const globalAppID = "dev~app" | |
| 40 | |
| 41 type globalInfoData struct { | |
| 42 namespace string | |
| 43 } | |
| 44 | |
| 45 type giImpl struct { | |
| 46 info.Interface | |
| 47 *globalInfoData | |
| 48 c context.Context | |
| 49 } | |
| 50 | |
| 51 var _ = info.Interface((*giImpl)(nil)) | |
| 52 | |
| 53 func (gi *giImpl) GetNamespace() string { | |
| 54 return gi.namespace | |
| 55 } | |
| 56 | |
| 57 func (gi *giImpl) Namespace(ns string) (ret context.Context, err error) { | |
| 58 if !validNamespace.MatchString(ns) { | |
| 59 return nil, fmt.Errorf("appengine: namespace %q does not match /
%s/", ns, validNamespace) | |
| 60 } | |
| 61 return context.WithValue(gi.c, giContextKey, &globalInfoData{ns}), nil | |
| 62 } | |
| 63 | |
| 64 func (gi *giImpl) AppID() string { | |
| 65 return globalAppID | |
| 66 } | |
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