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// Copyright 2023 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_CHROMEOS_REPORTING_WEBSITES_WEBSITE_USAGE_TELEMETRY_SAMPLER_H_
#define CHROME_BROWSER_CHROMEOS_REPORTING_WEBSITES_WEBSITE_USAGE_TELEMETRY_SAMPLER_H_
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/thread_annotations.h"
#include "chrome/browser/profiles/profile.h"
#include "components/reporting/metrics/sampler.h"
#include "components/reporting/proto/synced/metric_data.pb.h"
namespace reporting {
// Sampler used to collect website usage telemetry data from the user profile
// pref store. This usage data is originally persisted in the pref store by the
// `WebsiteUsageObserver` as it observes and tracks data collection from the
// `WebsiteMetrics` component.
class WebsiteUsageTelemetrySampler : public Sampler {
public:
explicit WebsiteUsageTelemetrySampler(base::WeakPtr<Profile> profile);
WebsiteUsageTelemetrySampler(const WebsiteUsageTelemetrySampler& other) =
delete;
WebsiteUsageTelemetrySampler& operator=(
const WebsiteUsageTelemetrySampler& other) = delete;
~WebsiteUsageTelemetrySampler() override;
// Collects website usage telemetry data from the user pref store across
// several URLs and triggers the specified callback with batched usage data.
// Sampler:
void MaybeCollect(OptionalMetricCallback callback) override;
private:
// Deletes website usage data from the user pref store. Triggered only after
// website usage telemetry data has been consumed to prevent data loss.
void DeleteWebsiteUsageDataFromPrefStore(
const WebsiteUsageData* website_usage_data);
SEQUENCE_CHECKER(sequence_checker_);
// Weak pointer to the user profile. Used to access the user pref store.
const base::WeakPtr<Profile> profile_ GUARDED_BY_CONTEXT(sequence_checker_);
base::WeakPtrFactory<WebsiteUsageTelemetrySampler> weak_ptr_factory_{this};
};
} // namespace reporting
#endif // CHROME_BROWSER_CHROMEOS_REPORTING_WEBSITES_WEBSITE_USAGE_TELEMETRY_SAMPLER_H_
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