Index: chrome/browser/chromeos/policy/device_local_account_external_data_manager.h |
diff --git a/chrome/browser/chromeos/policy/device_local_account_external_data_manager.h b/chrome/browser/chromeos/policy/device_local_account_external_data_manager.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..68edd01cd30a14432dbc8fdbf5b25d10ce38547a |
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+++ b/chrome/browser/chromeos/policy/device_local_account_external_data_manager.h |
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+// Copyright 2013 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_CHROMEOS_POLICY_DEVICE_LOCAL_ACCOUNT_EXTERNAL_DATA_MANAGER_H_ |
+#define CHROME_BROWSER_CHROMEOS_POLICY_DEVICE_LOCAL_ACCOUNT_EXTERNAL_DATA_MANAGER_H_ |
+ |
+#include <string> |
+ |
+#include "base/basictypes.h" |
+#include "base/compiler_specific.h" |
+#include "base/memory/ref_counted.h" |
+#include "chrome/browser/chromeos/policy/cloud_external_data_manager_base.h" |
+ |
+namespace base { |
+class SequencedTaskRunner; |
+} |
+ |
+namespace policy { |
+ |
+struct PolicyDefinitionList; |
+class ResourceCache; |
+ |
+// Downloads, verifies, caches and retrieves external data referenced by |
+// policies. |
+// This is the implementation for device-local accounts on Chrome OS. |
+// The manager is created by the DeviceLocalAccountExternalDataService and must |
+// not outlive it because the |resource_cache| is owned by the service. However, |
+// the service is not the manager's sole owner: The manager lives as long as |
+// either the service or a DeviceLocalAccountPolicyProvider references it. This |
+// is necessary because a device-local account can be removed from policy (thus |
+// removing it from the service) while a session is in progress and a provider |
+// exists for the account. The manager is only destroyed when neither service |
+// nor provider reference it anymore. |
+class DeviceLocalAccountExternalDataManager |
+ : public CloudExternalDataManagerBase, |
+ public base::RefCounted<DeviceLocalAccountExternalDataManager> { |
+ private: |
+ friend class DeviceLocalAccountExternalDataService; |
+ friend class base::RefCounted<DeviceLocalAccountExternalDataManager>; |
+ |
+ // The |policy_definitions| are used to determine the maximum size that the |
+ // data referenced by each policy can have. Download scheduling, verification, |
+ // caching and retrieval tasks are done via the |backend_task_runner|, which |
+ // must support file I/O. Network I/O is done via the |io_task_runner|. The |
+ // manager is responsible for external data references by policies in |
+ // |policy_store|. Downloaded external data is stored in the |resource_cache|. |
+ // The data is keyed by |account_id|, allowing one cache to be shared by any |
+ // number of accounts. To ensure synchronization of operations on the shared |
+ // cache, all its users must access the cache via |backend_task_runner| only. |
+ DeviceLocalAccountExternalDataManager( |
+ const std::string& account_id, |
+ const PolicyDefinitionList* policy_definitions, |
+ scoped_refptr<base::SequencedTaskRunner> backend_task_runner, |
+ scoped_refptr<base::SequencedTaskRunner> io_task_runner, |
+ ResourceCache* resource_cache); |
+ virtual ~DeviceLocalAccountExternalDataManager(); |
+ |
+ // CloudExternalDataManagerBase: |
+ virtual void OnPolicyStoreLoaded() OVERRIDE; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountExternalDataManager); |
+}; |
+ |
+} // namespace policy |
+ |
+#endif // CHROME_BROWSER_CHROMEOS_POLICY_DEVICE_LOCAL_ACCOUNT_EXTERNAL_DATA_MANAGER_H_ |