content/public/browser/access_token_store.h

   1 // Copyright (c) 2012 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 // Defines the Geolocation access token store, and associated factory function.
   6 // An access token store is responsible for providing the API to persist
   7 // access tokens, one at a time, and to load them back on mass.
   8 // The API is a little more complex than one might wish, due to the need for
   9 // prefs access to happen asynchronously on the UI thread.
  10 // This API is provided as abstract base classes to allow mocking and testing
  11 // of clients, without dependency on browser process singleton objects etc.
  12
  13 #ifndef CONTENT_PUBLIC_BROWSER_ACCESS_TOKEN_STORE_H_
  14 #define CONTENT_PUBLIC_BROWSER_ACCESS_TOKEN_STORE_H_
  15
  16 #include <map>
  17
  18 #include "base/callback.h"
  19 #include "base/memory/ref_counted.h"
  20 #include "base/strings/string16.h"
  21 #include "content/common/content_export.h"
  22 #include "googleurl/src/gurl.h"
  23
  24 class GURL;
  25
  26 namespace net {
  27 class URLRequestContextGetter;
  28 }
  29
  30 namespace content {
  31
  32 // Provides storage for the access token used in the network request.
  33 class AccessTokenStore : public base::RefCountedThreadSafe<AccessTokenStore> {
  34  public:
  35   // Map of server URLs to associated access token.
  36   typedef std::map<GURL, string16> AccessTokenSet;
  37   typedef base::Callback<void(AccessTokenSet, net::URLRequestContextGetter*)>
  38       LoadAccessTokensCallbackType;
  39
  40   // |callback| will be invoked once per LoadAccessTokens call, after existing
  41   // access tokens have been loaded from persistent store. As a convenience the
  42   // URLRequestContextGetter is also supplied as an argument in |callback|, as
  43   // in Chrome the call to obtain this must also be performed on the UI thread
  44   // so it is efficient to piggyback it onto this request.
  45   // Takes ownership of |callback|.
  46   virtual void LoadAccessTokens(
  47       const LoadAccessTokensCallbackType& callback) = 0;
  48
  49   virtual void SaveAccessToken(
  50       const GURL& server_url, const string16& access_token) = 0;
  51
  52  protected:
  53   friend class base::RefCountedThreadSafe<AccessTokenStore>;
  54   CONTENT_EXPORT AccessTokenStore() {}
  55   CONTENT_EXPORT virtual ~AccessTokenStore() {}
  56 };
  57
  58 }  // namespace content
  59
  60 #endif  // CONTENT_PUBLIC_BROWSER_ACCESS_TOKEN_STORE_H_