chrome/browser/extensions/token_cache/token_cache_service.h

   1 // Copyright (c) 2013 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 #ifndef CHROME_BROWSER_EXTENSIONS_TOKEN_CACHE_TOKEN_CACHE_SERVICE_H_
   6 #define CHROME_BROWSER_EXTENSIONS_TOKEN_CACHE_TOKEN_CACHE_SERVICE_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/time/time.h"
  14 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
  15 #include "content/public/browser/notification_observer.h"
  16 #include "content/public/browser/notification_registrar.h"
  17
  18 namespace content {
  19 class NotificationSource;
  20 }
  21
  22 class Profile;
  23
  24 namespace extensions {
  25
  26 // This class caches tokens for the current user.  It will clear tokens out
  27 // when the user logs out or after the specified timeout interval, or when
  28 // the instance of chrome shuts down.
  29 class TokenCacheService : public BrowserContextKeyedService,
  30                           public content::NotificationObserver {
  31  public:
  32   explicit TokenCacheService(Profile* profile);
  33   virtual ~TokenCacheService();
  34
  35   // Store a token for the currently logged in user. We will look it up later by
  36   // the name given here, and we will expire the token after the timeout.  For a
  37   // timeout of 0, we never expire the token.  After time_to_live expires, the
  38   // token will be expired.
  39   void StoreToken(const std::string& token_name, const std::string& token_value,
  40                   base::TimeDelta time_to_live);
  41
  42   // Retrieve a token for the currently logged in user.  This returns an empty
  43   // string if the token was not found or timed out.
  44   std::string RetrieveToken(const std::string& token_name);
  45
  46   // Inherited from NotificationObserver.
  47   virtual void Observe(int type,
  48                        const content::NotificationSource& source,
  49                        const content::NotificationDetails& details) OVERRIDE;
  50
  51  private:
  52   friend class TokenCacheTest;
  53
  54   struct TokenCacheData {
  55     std::string token;
  56     base::Time expiration_time;
  57   };
  58
  59   // Map the token name (string) to token data.
  60   std::map<std::string, TokenCacheData> token_cache_;
  61   content::NotificationRegistrar registrar_;
  62   const Profile* const profile_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(TokenCacheService);
  65 };
  66
  67 }  // namespace extensions
  68
  69 #endif  // CHROME_BROWSER_EXTENSIONS_TOKEN_CACHE_TOKEN_CACHE_SERVICE_H_