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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_SEGMENTATION_PLATFORM_INTERNAL_DATABASE_CONFIG_HOLDER_H_
#define COMPONENTS_SEGMENTATION_PLATFORM_INTERNAL_DATABASE_CONFIG_HOLDER_H_
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/containers/flat_set.h"
#include "components/segmentation_platform/public/config.h"
#include "components/segmentation_platform/public/proto/segmentation_platform.pb.h"
namespace segmentation_platform {
// Holds all Configs active in the service.
class ConfigHolder {
public:
explicit ConfigHolder(std::vector<std::unique_ptr<Config>> configs);
~ConfigHolder();
ConfigHolder(const ConfigHolder&) = delete;
ConfigHolder& operator=(const ConfigHolder&) = delete;
const std::vector<std::unique_ptr<Config>>& configs() const {
return configs_;
}
const base::flat_set<proto::SegmentId>& all_segment_ids() const {
return all_segment_ids_;
}
const std::set<std::string> non_legacy_segmentation_keys() const {
return non_legacy_segmentation_keys_;
}
const base::flat_set<proto::SegmentId>& legacy_output_segment_ids() const {
return legacy_output_segment_ids_;
}
// Returns segmentation key for the given `segment_id`. Only if the Config
// supports output configs in metadata.
std::optional<std::string> GetKeyForSegmentId(
proto::SegmentId segment_id) const;
// Returns config for the given `segment id`.
const Config* GetConfigForSegmentId(proto::SegmentId segment_id) const;
// Returns true if the Config is legacy, does not support output config and
// uses discrete mapping.
bool IsLegacySegmentationKey(const std::string& segmentation_key) const;
// Returns the config for provided segmentation key, null if not found.
Config* GetConfigForSegmentationKey(
const std::string& segmentation_key) const;
private:
// All the active Config(s) in the service.
const std::vector<std::unique_ptr<Config>> configs_;
// All segment IDs needed for all active Config(s).
const base::flat_set<proto::SegmentId> all_segment_ids_;
// All segment IDs that doesn't support output config in metadata.
base::flat_set<proto::SegmentId> legacy_output_segment_ids_;
// List of segmentation keys with exactly one segment ID and supports output
// config.
std::set<std::string> non_legacy_segmentation_keys_;
// List of segmentation keys for Config(s) that doesn't support output configs
// in metadata.
std::set<std::string> legacy_output_segmentation_keys_;
// Map from segment ID to the segmentation key that makes use of it.
std::map<proto::SegmentId, std::string> segmentation_key_by_segment_id_;
};
} // namespace segmentation_platform
#endif // COMPONENTS_SEGMENTATION_PLATFORM_INTERNAL_DATABASE_CONFIG_HOLDER_H_
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