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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 "content/browser/aggregation_service/report_scheduler_timer.h"
#include <memory>
#include <optional>
#include <utility>
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "base/timer/wall_clock_timer.h"
#include "content/public/browser/network_service_instance.h"
#include "services/network/public/mojom/network_change_manager.mojom.h"
namespace content {
ReportSchedulerTimer::ReportSchedulerTimer(std::unique_ptr<Delegate> delegate)
: delegate_(std::move(delegate)) {
CHECK(delegate_);
network::NetworkConnectionTracker* tracker = GetNetworkConnectionTracker();
obs_.Observe(tracker);
network::mojom::ConnectionType connection_type;
bool synchronous_return = tracker->GetConnectionType(
&connection_type,
base::BindOnce(&ReportSchedulerTimer::OnConnectionChanged,
weak_ptr_factory_.GetWeakPtr()));
if (synchronous_return) {
OnConnectionChanged(connection_type);
}
}
ReportSchedulerTimer::~ReportSchedulerTimer() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
network::mojom::ConnectionType ReportSchedulerTimer::connection_type() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return connection_type_;
}
void ReportSchedulerTimer::MaybeSet(std::optional<base::Time> reporting_time) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!reporting_time.has_value() || IsOffline()) {
return;
}
if (!reporting_time_reached_timer_.IsRunning() ||
reporting_time_reached_timer_.desired_run_time() > reporting_time) {
reporting_time_reached_timer_.Start(FROM_HERE, reporting_time.value(), this,
&ReportSchedulerTimer::OnTimerFired);
}
}
void ReportSchedulerTimer::Refresh(base::Time now) {
if (IsOffline()) {
return;
}
delegate_->GetNextReportTime(base::BindOnce(&ReportSchedulerTimer::MaybeSet,
weak_ptr_factory_.GetWeakPtr()),
now);
}
void ReportSchedulerTimer::OnTimerFired() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
base::Time now = base::Time::Now();
delegate_->OnReportingTimeReached(
now, reporting_time_reached_timer_.desired_run_time());
Refresh(now);
}
void ReportSchedulerTimer::OnConnectionChanged(
network::mojom::ConnectionType connection_type) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
bool was_offline = IsOffline();
connection_type_ = connection_type;
if (IsOffline()) {
reporting_time_reached_timer_.Stop();
} else if (was_offline) {
// Add delay to all reports that should have been sent while the browser was
// offline so they are not temporally joinable. We only need to do this if
// the connection changes from offline to online, not if an online
// connection changes between, e.g., 3G and 4G.
delegate_->AdjustOfflineReportTimes(base::BindOnce(
&ReportSchedulerTimer::MaybeSet, weak_ptr_factory_.GetWeakPtr()));
}
}
bool ReportSchedulerTimer::IsOffline() const {
return connection_type_ == network::mojom::ConnectionType::CONNECTION_NONE;
}
} // namespace content
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