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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/segmentation_platform/internal/database/segment_info_cache.h"
#include <memory>
#include <optional>
#include "base/functional/callback.h"
#include "components/segmentation_platform/internal/proto/model_prediction.pb.h"
#include "components/segmentation_platform/public/proto/model_metadata.pb.h"
namespace segmentation_platform {
SegmentInfoCache::SegmentInfoCache() = default;
SegmentInfoCache::~SegmentInfoCache() = default;
const SegmentInfo* SegmentInfoCache::GetSegmentInfo(
SegmentId segment_id,
ModelSource model_source) const {
auto it = segment_info_cache_.find(std::make_pair(segment_id, model_source));
return (it == segment_info_cache_.end()) ? nullptr : &it->second;
}
std::unique_ptr<SegmentInfoCache::SegmentInfoList>
SegmentInfoCache::GetSegmentInfoForSegments(
const base::flat_set<SegmentId>& segment_ids,
ModelSource model_source) const {
std::unique_ptr<SegmentInfoCache::SegmentInfoList> segments_found =
std::make_unique<SegmentInfoCache::SegmentInfoList>();
for (SegmentId target : segment_ids) {
auto it = segment_info_cache_.find(std::make_pair(target, model_source));
if (it != segment_info_cache_.end()) {
segments_found->emplace_back(std::make_pair(target, &it->second));
}
}
return segments_found;
}
std::unique_ptr<SegmentInfoCache::SegmentInfoList>
SegmentInfoCache::GetSegmentInfoForBothModels(
const base::flat_set<SegmentId>& segment_ids) const {
auto server_model_segments_found =
GetSegmentInfoForSegments(segment_ids, ModelSource::SERVER_MODEL_SOURCE);
auto default_model_segments_found =
GetSegmentInfoForSegments(segment_ids, ModelSource::DEFAULT_MODEL_SOURCE);
// Move the contents of second list into first one.
std::move(std::begin(*default_model_segments_found),
std::end(*default_model_segments_found),
std::back_inserter(*server_model_segments_found));
return server_model_segments_found;
}
void SegmentInfoCache::UpdateSegmentInfo(
SegmentId segment_id,
ModelSource model_source,
std::optional<SegmentInfo> segment_info) {
if (segment_info.has_value()) {
segment_info->set_model_source(model_source);
segment_info_cache_[std::make_pair(segment_id, model_source)] =
std::move(segment_info.value());
} else {
auto iter =
segment_info_cache_.find(std::make_pair(segment_id, model_source));
if (iter == segment_info_cache_.end()) {
return;
}
segment_info_cache_.erase(iter);
}
}
} // namespace segmentation_platform
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