Consolidate data storage and notifications in the cloud policy subsystem

chrome/browser/policy/user_policy_identity_strategy.h

-// Copyright (c) 2011 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.
-
-#ifndef CHROME_BROWSER_POLICY_USER_POLICY_IDENTITY_STRATEGY_H_
-#define CHROME_BROWSER_POLICY_USER_POLICY_IDENTITY_STRATEGY_H_
-#pragma once
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/file_path.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "chrome/browser/policy/cloud_policy_identity_strategy.h"
-#include "chrome/browser/policy/user_policy_token_cache.h"
-
-namespace policy {
-
-class DeviceManagementBackend;
-
-// A token provider implementation that provides a user device token for the
-// user corresponding to given credentials.
-class UserPolicyIdentityStrategy : public CloudPolicyIdentityStrategy,
-                                   public UserPolicyTokenCache::Delegate {
- public:
-  UserPolicyIdentityStrategy(const std::string& user_name,
-                             const FilePath& token_cache_file);
-  virtual ~UserPolicyIdentityStrategy();
-
-  // Start loading the token cache.
-  void LoadTokenCache();
-
-  // Set a newly arriving auth_token and maybe trigger a fetch.
-  void SetAuthToken(const std::string& auth_token);
-
-  // CloudPolicyIdentityStrategy implementation:
-  virtual std::string GetDeviceToken() OVERRIDE;
-  virtual std::string GetDeviceID() OVERRIDE;
-  virtual std::string GetMachineID() OVERRIDE;
-  virtual std::string GetMachineModel() OVERRIDE;
-  virtual em::DeviceRegisterRequest_Type GetPolicyRegisterType() OVERRIDE;
-  virtual std::string GetPolicyType() OVERRIDE;
-  virtual bool GetCredentials(std::string* username,
-                              std::string* auth_token) OVERRIDE;
-  virtual void OnDeviceTokenAvailable(const std::string& token) OVERRIDE;
-
- private:
-  // Checks whether a new token should be fetched and if so, sends out a
-  // notification.
-  void CheckAndTriggerFetch();
-
-  // Gets the current user.
-  std::string GetCurrentUser();
-
-  // Called from the token cache when the token has been loaded.
-  virtual void OnTokenCacheLoaded(const std::string& token,
-                                  const std::string& device_id) OVERRIDE;
-
-  // Keeps the on-disk copy of the token.
-  scoped_refptr<UserPolicyTokenCache> cache_;
-
-  // false until cache_ reports being loaded for the first time, true
-  // afterwards.
-  bool cache_loaded_;
-
-  // The device ID we use.
-  std::string device_id_;
-
-  // Current device token. Empty if not available.
-  std::string device_token_;
-
-  // Current auth token. Empty if not available.
-  std::string auth_token_;
-
-  // Current user name. Empty if not available. This is set on creation and not
-  // changed afterwards.
-  std::string user_name_;
-
-  // Allows to construct weak ptrs.
-  base::WeakPtrFactory<UserPolicyTokenCache::Delegate> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(UserPolicyIdentityStrategy);
-};
-
-}  // namespace policy
-
-#endif  // CHROME_BROWSER_POLICY_USER_POLICY_IDENTITY_STRATEGY_H_