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// Copyright 2017 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_FEATURE_ENGAGEMENT_INTERNAL_CHROME_VARIATIONS_CONFIGURATION_H_
#define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_CHROME_VARIATIONS_CONFIGURATION_H_
#include "base/feature_list.h"
#include "build/build_config.h"
#include "components/feature_engagement/public/configuration.h"
#include "components/feature_engagement/public/configuration_provider.h"
#include "components/feature_engagement/public/feature_list.h"
#include "components/feature_engagement/public/group_list.h"
namespace feature_engagement {
// A ChromeVariationsConfiguration provides a configuration that is parsed from
// Chrome variations feature params. It is required to call
// LoadFeatureConfigs(...) with all the features that should be parsed or
// specified from code.
class ChromeVariationsConfiguration : public Configuration {
public:
ChromeVariationsConfiguration();
ChromeVariationsConfiguration(const ChromeVariationsConfiguration&) = delete;
ChromeVariationsConfiguration& operator=(
const ChromeVariationsConfiguration&) = delete;
~ChromeVariationsConfiguration() override;
// Configuration implementation.
const FeatureConfig& GetFeatureConfig(
const base::Feature& feature) const override;
const FeatureConfig& GetFeatureConfigByName(
const std::string& feature_name) const override;
const Configuration::ConfigMap& GetRegisteredFeatureConfigs() const override;
const std::vector<std::string> GetRegisteredFeatures() const override;
const GroupConfig& GetGroupConfig(const base::Feature& group) const override;
const GroupConfig& GetGroupConfigByName(
const std::string& group_name) const override;
const Configuration::GroupConfigMap& GetRegisteredGroupConfigs()
const override;
const std::vector<std::string> GetRegisteredGroups() const override;
// Read the variations configuration for all of the given |features| and
// |groups| using the `configuration_providers`, and stores the result. It is
// only valid to call this method once.
void LoadConfigs(const ConfigurationProviderList& configuration_providers,
const FeatureVector& features,
const GroupVector& groups);
#if BUILDFLAG(IS_CHROMEOS)
void UpdateConfig(const base::Feature& feature,
const ConfigurationProvider* provider) override;
const Configuration::EventPrefixSet& GetRegisteredAllowedEventPrefixes()
const override;
#endif
private:
void LoadFeatureConfig(
const base::Feature& feature,
const ConfigurationProviderList& configuration_providers,
const FeatureVector& all_features,
const GroupVector& all_groups);
void LoadGroupConfig(
const base::Feature& group,
const ConfigurationProviderList& configuration_providers);
#if BUILDFLAG(IS_CHROMEOS)
void LoadAllowedEventPrefixes(
const base::Feature& feature,
const ConfigurationProviderList& configuration_providers);
#endif
// Expands any group names in the existing FeatureConfig fields into the
// feature names that are in the group.
void ExpandGroupNamesInFeatures(const GroupVector& all_groups);
// The current configurations.
ConfigMap configs_;
// The current group configurations.
GroupConfigMap group_configs_;
#if BUILDFLAG(IS_CHROMEOS)
// The allowed set of prefixes.
EventPrefixSet event_prefixes_;
#endif
};
} // namespace feature_engagement
#endif // COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_CHROME_VARIATIONS_CONFIGURATION_H_
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