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// Copyright 2025 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/loader/from_gws_navigation_and_keep_alive_request_tracker.h"
#include <tuple>
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/time/time.h"
#include "components/page_load_metrics/browser/features.h"
#include "content/public/browser/browser_context.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "services/network/public/cpp/resource_request.h"
namespace {
BASE_FEATURE_PARAM(base::TimeDelta,
kBeaconLeakageLoggingCleanupTimeout,
&page_load_metrics::features::kBeaconLeakageLogging,
"cleanup_timeout",
base::Seconds(180));
} // namespace
FromGWSNavigationAndKeepAliveRequestTracker::
FromGWSNavigationAndKeepAliveRequestTracker(
content::BrowserContext* browser_context)
: browser_context_(browser_context) {}
FromGWSNavigationAndKeepAliveRequestTracker::
~FromGWSNavigationAndKeepAliveRequestTracker() = default;
void FromGWSNavigationAndKeepAliveRequestTracker::TrackNavigation(
content::GlobalRenderFrameHostId initator_rfh_id,
int64_t category_id,
ukm::SourceId ukm_source_id,
int64_t navigation_id) {
FrameCategory frame_category{
initator_rfh_id,
category_id,
ukm_source_id,
};
if (per_frame_category_navigation_and_keepalive_requests_.find(
frame_category) ==
per_frame_category_navigation_and_keepalive_requests_.end()) {
per_frame_category_navigation_and_keepalive_requests_[frame_category] = {};
} else {
auto& requests =
per_frame_category_navigation_and_keepalive_requests_[frame_category];
for (size_t i = 0; i < requests.size(); ++i) {
if (requests[i].keepalive_token.has_value() &&
!requests[i].navigation_id.has_value()) {
// Found a keepalive request token without a navigation ID.
// Logs a UKM event and removes the request from the list.
requests[i].navigation_id = navigation_id;
LogUkmEvent(frame_category, requests[i]);
requests.erase(requests.begin() + i);
return;
}
}
// No keepalive request token without a navigation ID.
}
per_frame_category_navigation_and_keepalive_requests_[frame_category]
.push_back({.navigation_id = navigation_id});
StartCleanupTimer();
}
void FromGWSNavigationAndKeepAliveRequestTracker::TrackKeepAliveRequest(
content::GlobalRenderFrameHostId initator_rfh_id,
int64_t category_id,
ukm::SourceId ukm_source_id,
base::UnguessableToken keepalive_token) {
FrameCategory frame_category{
initator_rfh_id,
category_id,
ukm_source_id,
};
if (per_frame_category_navigation_and_keepalive_requests_.find(
frame_category) ==
per_frame_category_navigation_and_keepalive_requests_.end()) {
per_frame_category_navigation_and_keepalive_requests_[frame_category] = {};
} else {
auto& requests =
per_frame_category_navigation_and_keepalive_requests_[frame_category];
for (size_t i = 0; i < requests.size(); ++i) {
if (!requests[i].keepalive_token.has_value() &&
requests[i].navigation_id.has_value()) {
// Found a navigation without a keepalive request token.
// Logs a UKM event and removes the request from the list.
requests[i].keepalive_token = keepalive_token;
LogUkmEvent(frame_category, requests[i]);
requests.erase(requests.begin() + i);
return;
}
}
}
per_frame_category_navigation_and_keepalive_requests_[frame_category]
.push_back({.keepalive_token = keepalive_token});
StartCleanupTimer();
}
void FromGWSNavigationAndKeepAliveRequestTracker::LogUkmEvent(
const FrameCategory& frame_category,
const NavigationAndKeepAliveRequest& request) {
CHECK(request.navigation_id.has_value());
CHECK(request.keepalive_token.has_value());
ukm::builders::FetchKeepAliveRequest_WithCategory_Navigation ukm_builder(
frame_category.ukm_source_id);
ukm_builder.SetCategory(frame_category.category_id);
ukm_builder.SetNavigationId(*request.navigation_id);
ukm_builder.SetId_Low(request.keepalive_token->GetLowForSerialization());
ukm_builder.SetId_High(request.keepalive_token->GetHighForSerialization());
auto* ukm_recorder = ukm::UkmRecorder::Get();
ukm_builder.Record(ukm_recorder->Get());
}
void FromGWSNavigationAndKeepAliveRequestTracker::StartCleanupTimer() {
if (cleanup_timer_.IsRunning()) {
return;
}
cleanup_timer_.Start(
FROM_HERE, kBeaconLeakageLoggingCleanupTimeout.Get(),
base::BindRepeating(
&FromGWSNavigationAndKeepAliveRequestTracker::OnCleanupTimeout,
weak_ptr_factory_.GetWeakPtr()));
}
void FromGWSNavigationAndKeepAliveRequestTracker::OnCleanupTimeout() {
per_frame_category_navigation_and_keepalive_requests_.clear();
}
bool FromGWSNavigationAndKeepAliveRequestTracker::FrameCategory::operator<(
const FrameCategory& rhs) const {
return std::tie(initator_rfh_id, category_id, ukm_source_id) <
std::tie(rhs.initator_rfh_id, rhs.category_id, rhs.ukm_source_id);
}
bool FromGWSNavigationAndKeepAliveRequestTracker::FrameCategory::operator==(
const FrameCategory& rhs) const {
return std::tie(initator_rfh_id, category_id, ukm_source_id) ==
std::tie(rhs.initator_rfh_id, rhs.category_id, rhs.ukm_source_id);
}
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