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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 "components/reporting/metrics/metric_event_observer_manager.h"
#include <algorithm>
#include <utility>
#include <vector>
#include "base/functional/bind.h"
#include "base/memory/scoped_refptr.h"
#include "base/metrics/histogram_functions.h"
#include "base/task/bind_post_task.h"
#include "base/task/sequenced_task_runner.h"
#include "base/time/time.h"
#include "components/reporting/metrics/collector_base.h"
#include "components/reporting/metrics/event_driven_telemetry_collector_pool.h"
#include "components/reporting/metrics/metric_event_observer.h"
#include "components/reporting/metrics/metric_report_queue.h"
#include "components/reporting/metrics/metric_reporting_controller.h"
#include "components/reporting/metrics/reporting_settings.h"
#include "components/reporting/proto/synced/metric_data.pb.h"
namespace reporting {
MetricEventObserverManager::MetricEventObserverManager(
std::unique_ptr<MetricEventObserver> event_observer,
MetricReportQueue* metric_report_queue,
ReportingSettings* reporting_settings,
const std::string& enable_setting_path,
bool setting_enabled_default_value,
EventDrivenTelemetryCollectorPool* collector_pool,
base::TimeDelta init_delay)
: event_observer_(std::move(event_observer)),
metric_report_queue_(metric_report_queue),
collector_pool_(collector_pool) {
CHECK(base::SequencedTaskRunner::HasCurrentDefault());
DETACH_FROM_SEQUENCE(sequence_checker_);
auto on_event_observed_cb =
base::BindRepeating(&MetricEventObserverManager::OnEventObserved,
weak_ptr_factory_.GetWeakPtr());
event_observer_->SetOnEventObservedCallback(
base::BindPostTaskToCurrentDefault(std::move(on_event_observed_cb)));
reporting_controller_ = std::make_unique<MetricReportingController>(
reporting_settings, enable_setting_path, setting_enabled_default_value);
CHECK(!init_delay.is_negative());
if (init_delay.is_zero()) {
SetReportingControllerCb();
return;
}
CHECK(base::SequencedTaskRunner::HasCurrentDefault());
base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&MetricEventObserverManager::SetReportingControllerCb,
weak_ptr_factory_.GetWeakPtr()),
init_delay);
}
MetricEventObserverManager::~MetricEventObserverManager() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
void MetricEventObserverManager::SetReportingControllerCb() {
reporting_controller_->SetSettingUpdateCb(
base::BindRepeating(&MetricEventObserverManager::SetReportingEnabled,
base::Unretained(this),
/*is_enabled=*/true),
base::BindRepeating(&MetricEventObserverManager::SetReportingEnabled,
base::Unretained(this),
/*is_enabled=*/false));
}
void MetricEventObserverManager::SetReportingEnabled(bool is_enabled) {
is_reporting_enabled_ = is_enabled;
event_observer_->SetReportingEnabled(is_enabled);
}
void MetricEventObserverManager::OnEventObserved(MetricData metric_data) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (!is_reporting_enabled_) {
return;
}
MetricEventType event_type = metric_data.event_data().type();
metric_data.set_timestamp_ms(
base::Time::Now().InMillisecondsSinceUnixEpoch());
metric_report_queue_->Enqueue(std::move(metric_data));
// Since histogram enumeration expects values to be less than
// MetricEventType_MAX, we add 1 to the max value as the max value is the
// last item in the MetricEventType.
base::UmaHistogramEnumeration(
kEventMetricEnqueuedMetricsName, event_type,
static_cast<MetricEventType>(MetricEventType_MAX + 1));
if (collector_pool_) {
std::vector<raw_ptr<CollectorBase, VectorExperimental>>
telemetry_collectors =
collector_pool_->GetTelemetryCollectors(event_type);
for (CollectorBase* telemetry_collector : telemetry_collectors) {
telemetry_collector->Collect(/*is_event_driven=*/true);
}
}
}
} // namespace reporting
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