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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_POWER_ML_SMART_DIM_DOWNLOAD_WORKER_H_
#define CHROME_BROWSER_ASH_POWER_ML_SMART_DIM_DOWNLOAD_WORKER_H_
#include "base/containers/flat_map.h"
#include "base/functional/callback.h"
#include "chrome/browser/ash/power/ml/smart_dim/smart_dim_worker.h"
#include "services/data_decoder/public/cpp/data_decoder.h"
namespace ash {
namespace power {
namespace ml {
// The contents of metadata JSON, preprocessor proto and model flatbuffer.
using ComponentFileContents = std::tuple<std::string, std::string, std::string>;
// SmartDimWorker that loads meta info, preprocessor config and ML service model
// files from smart dim components.
class DownloadWorker : public SmartDimWorker {
public:
DownloadWorker();
DownloadWorker(const DownloadWorker&) = delete;
DownloadWorker& operator=(const DownloadWorker&) = delete;
~DownloadWorker() override;
// SmartDimWorker overrides:
const assist_ranker::ExamplePreprocessorConfig* GetPreprocessorConfig()
override;
const mojo::Remote<chromeos::machine_learning::mojom::GraphExecutor>&
GetExecutor() override;
// Remotes used to execute functions in the ML service side.
void LoadModelCallback(
chromeos::machine_learning::mojom::LoadModelResult result);
void CreateGraphExecutorCallback(
chromeos::machine_learning::mojom::CreateGraphExecutorResult result);
// Returns true if it has loaded components successfully.
bool IsReady();
// Loads meta info, preprocessor config and ML service model from smart dim
// components.
// Called by component updater when it gets a verified smart dim component and
// DownloadWorker is not ready.
// If IsReady(), this function won't be called again.
void InitializeFromComponent(const ComponentFileContents& contents);
// Sets a callback that will be invoked when the component is ready.
void SetOnReadyForTest(base::OnceClosure on_ready);
private:
base::flat_map<std::string, int> inputs_;
base::flat_map<std::string, int> outputs_;
std::string metrics_model_name_;
base::OnceClosure on_ready_for_test_;
void LoadModelAndCreateGraphExecutor(const std::string& model_flatbuffer);
void OnJsonParsed(const std::string& model_flatbuffer,
const data_decoder::DataDecoder::ValueOrError result);
};
} // namespace ml
} // namespace power
} // namespace ash
#endif // CHROME_BROWSER_ASH_POWER_ML_SMART_DIM_DOWNLOAD_WORKER_H_
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