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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/enterprise/connectors/device_trust/signals/signals_service_impl.h"
#include <memory>
#include <utility>
#include "base/barrier_closure.h"
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/values.h"
#include "chrome/browser/enterprise/connectors/device_trust/signals/decorators/common/metrics_utils.h"
#include "chrome/browser/enterprise/connectors/device_trust/signals/decorators/common/signals_decorator.h"
#include "chrome/browser/enterprise/connectors/device_trust/signals/signals_filterer.h"
namespace enterprise_connectors {
namespace {
constexpr char kLatencyHistogramVariant[] = "Full";
} // namespace
SignalsServiceImpl::SignalsServiceImpl(
std::vector<std::unique_ptr<SignalsDecorator>> signals_decorators,
std::unique_ptr<SignalsFilterer> signals_filterer)
: signals_decorators_(std::move(signals_decorators)),
signals_filterer_(std::move(signals_filterer)) {
CHECK(signals_filterer_);
}
SignalsServiceImpl::~SignalsServiceImpl() = default;
void SignalsServiceImpl::CollectSignals(CollectSignalsCallback callback) {
auto start_time = base::TimeTicks::Now();
auto signals = std::make_unique<base::Value::Dict>();
auto* signals_ptr = signals.get();
auto barrier_closure = base::BarrierClosure(
signals_decorators_.size(),
base::BindOnce(&SignalsServiceImpl::OnSignalsDecorated,
weak_ptr_factory_.GetWeakPtr(), std::move(callback),
start_time, std::move(signals)));
for (const auto& decorator : signals_decorators_) {
decorator->Decorate(*signals_ptr, barrier_closure);
}
}
void SignalsServiceImpl::OnSignalsDecorated(
CollectSignalsCallback callback,
base::TimeTicks start_time,
std::unique_ptr<base::Value::Dict> signals) {
LogSignalsCollectionLatency(kLatencyHistogramVariant, start_time);
if (!signals) {
base::Value::Dict empty_dictionary;
std::move(callback).Run(std::move(empty_dictionary));
} else {
signals_filterer_->Filter(*signals);
std::move(callback).Run(std::move(*signals));
}
}
} // namespace enterprise_connectors
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