| // Copyright 2020 The Chromium OS 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 DIAGNOSTICS_CROS_HEALTHD_FETCHERS_STORAGE_CACHING_DEVICE_ADAPTER_H_ |
| #define DIAGNOSTICS_CROS_HEALTHD_FETCHERS_STORAGE_CACHING_DEVICE_ADAPTER_H_ |
| |
| #include <cstdint> |
| #include <memory> |
| #include <string> |
| |
| #include <base/optional.h> |
| |
| #include "diagnostics/common/status_macros.h" |
| #include "diagnostics/common/statusor.h" |
| #include "diagnostics/cros_healthd/fetchers/storage/storage_device_adapter.h" |
| |
| namespace diagnostics { |
| |
| // A caching decorator for the device-specific adapters. Its purpose is to |
| // eliminate repeating calls into the kernel and hardware. |
| class CachingDeviceAdapter final : public StorageDeviceAdapter { |
| public: |
| explicit CachingDeviceAdapter(std::unique_ptr<StorageDeviceAdapter> adapter); |
| CachingDeviceAdapter(const CachingDeviceAdapter&) = delete; |
| CachingDeviceAdapter(CachingDeviceAdapter&&) = delete; |
| CachingDeviceAdapter& operator=(const CachingDeviceAdapter&) = delete; |
| CachingDeviceAdapter& operator=(CachingDeviceAdapter&&) = delete; |
| ~CachingDeviceAdapter() override = default; |
| |
| std::string GetDeviceName() const override; |
| StatusOr<chromeos::cros_healthd::mojom::BlockDeviceVendor> GetVendorId() |
| const override; |
| StatusOr<chromeos::cros_healthd::mojom::BlockDeviceProduct> GetProductId() |
| const override; |
| StatusOr<chromeos::cros_healthd::mojom::BlockDeviceRevision> GetRevision() |
| const override; |
| StatusOr<std::string> GetModel() const override; |
| StatusOr<chromeos::cros_healthd::mojom::BlockDeviceFirmware> |
| GetFirmwareVersion() const override; |
| |
| private: |
| const std::unique_ptr<const StorageDeviceAdapter> adapter_; |
| |
| // The fields have to be mutable because of the const interface. |
| mutable base::Optional<std::string> device_name_; |
| mutable base::Optional<chromeos::cros_healthd::mojom::BlockDeviceVendor> |
| vendor_id_; |
| mutable base::Optional<chromeos::cros_healthd::mojom::BlockDeviceProduct> |
| product_id_; |
| mutable base::Optional<chromeos::cros_healthd::mojom::BlockDeviceRevision> |
| revision_; |
| mutable base::Optional<std::string> model_; |
| mutable base::Optional<chromeos::cros_healthd::mojom::BlockDeviceFirmware> |
| firmware_; |
| }; |
| |
| } // namespace diagnostics |
| |
| #endif // DIAGNOSTICS_CROS_HEALTHD_FETCHERS_STORAGE_CACHING_DEVICE_ADAPTER_H_ |