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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.
#include "components/segmentation_platform/internal/database/cached_result_provider.h"
#include "base/logging.h"
#include "components/segmentation_platform/internal/logging.h"
#include "components/segmentation_platform/internal/metadata/metadata_utils.h"
#include "components/segmentation_platform/internal/stats.h"
#include "components/segmentation_platform/public/config.h"
#include "components/segmentation_platform/public/proto/prediction_result.pb.h"
namespace segmentation_platform {
CachedResultProvider::CachedResultProvider(
ClientResultPrefs* prefs,
const std::vector<std::unique_ptr<Config>>& configs)
: configs_(configs), result_prefs_(prefs) {
for (const auto& config : *configs_) {
const proto::ClientResult* client_result =
result_prefs_->ReadClientResultFromPrefs(config->segmentation_key);
bool has_valid_result = client_result &&
client_result->client_result().result_size() > 0 &&
client_result->client_result().has_output_config();
has_valid_result = has_valid_result &&
metadata_utils::ValidateOutputConfig(
client_result->client_result().output_config()) ==
metadata_utils::ValidationResult::kValidationSuccess;
stats::RecordSegmentSelectionFailure(
*config, has_valid_result ? stats::SegmentationSelectionFailureReason::
kSelectionAvailableInProtoPrefs
: stats::SegmentationSelectionFailureReason::
kInvalidSelectionResultInProtoPrefs);
if (has_valid_result) {
client_result_from_last_session_map_.insert(
{config->segmentation_key, client_result->client_result()});
} else {
client_result_from_last_session_map_.erase(config->segmentation_key);
}
}
}
CachedResultProvider::~CachedResultProvider() = default;
std::optional<proto::PredictionResult>
CachedResultProvider::GetPredictionResultForClient(
const std::string& segmentation_key) {
const auto iter = client_result_from_last_session_map_.find(segmentation_key);
if (iter == client_result_from_last_session_map_.end()) {
return std::nullopt;
}
VLOG(1) << "CachedResultProvider loaded prefs with results from previous "
"session: "
<< segmentation_platform::PredictionResultToDebugString(iter->second)
<< " for segmentation key " << segmentation_key;
return iter->second;
}
} // namespace segmentation_platform
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