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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 COMPONENTS_VARIATIONS_SERVICE_LIMITED_ENTROPY_SYNTHETIC_TRIAL_H_
#define COMPONENTS_VARIATIONS_SERVICE_LIMITED_ENTROPY_SYNTHETIC_TRIAL_H_
#include <string>
#include "base/version_info/channel.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/variations/synthetic_trial_registry.h"
class PrefService;
namespace variations {
inline constexpr char kLimitedEntropySyntheticTrialName[] =
"LimitedEntropySyntheticTrial";
inline constexpr char kLimitedEntropySyntheticTrialEnabled[] = "Enabled";
inline constexpr char kLimitedEntropySyntheticTrialControl[] = "Control";
inline constexpr char kLimitedEntropySyntheticTrialDefault[] = "Default";
class LimitedEntropySyntheticTrial {
public:
explicit LimitedEntropySyntheticTrial(PrefService* local_state,
version_info::Channel channel);
LimitedEntropySyntheticTrial(const LimitedEntropySyntheticTrial&) = delete;
LimitedEntropySyntheticTrial& operator=(const LimitedEntropySyntheticTrial&) =
delete;
~LimitedEntropySyntheticTrial();
// Registers the prefs needed for this trial.
static void RegisterPrefs(PrefRegistrySimple* registry);
// Returns whether the client is in the enabled group for this trial.
bool IsEnabled();
// Returns the name of the group that the client belongs to for this trial.
std::string_view GetGroupName();
// Registers the group membership of this trial to the given
// `synthetic_trial_registry`.
void Register(SyntheticTrialRegistry& synthetic_trial_registry);
protected:
// Testing only. Provides a convenient way to instantiate a trial with the
// given group assignment.
LimitedEntropySyntheticTrial(std::string_view group_name);
private:
const std::string_view group_name_;
};
} // namespace variations
#endif // COMPONENTS_VARIATIONS_SERVICE_LIMITED_ENTROPY_SYNTHETIC_TRIAL_H_
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