prefetch_manager.cc | Explore in Territory

// Copyright 2020 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/predictors/prefetch_manager.h"

#include <utility>

#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/not_fatal_until.h"
#include "base/task/single_thread_task_runner.h"
#include "chrome/browser/predictors/predictors_features.h"
#include "chrome/browser/predictors/predictors_switches.h"
#include "chrome/browser/predictors/resource_prefetch_predictor.h"
#include "chrome/browser/prefetch/prefetch_headers.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/global_request_id.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/browser/url_loader_throttles.h"
#include "extensions/buildflags/buildflags.h"
#include "net/base/load_flags.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "services/network/public/cpp/empty_url_loader_client.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/url_loader_factory_builder.h"
#include "services/network/public/mojom/fetch_api.mojom.h"
#include "services/network/public/mojom/network_context.mojom.h"
#include "services/network/public/mojom/url_loader_factory.mojom-forward.h"
#include "third_party/blink/public/common/loader/throttling_url_loader.h"
#include "third_party/blink/public/mojom/loader/resource_load_info.mojom-shared.h"

#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "extensions/browser/api/web_request/web_request_api.h"
#include "extensions/browser/browser_context_keyed_api_factory.h"
#endif  // BUILDFLAG(ENABLE_EXTENSIONS)

namespace predictors {

namespace {

const net::NetworkTrafficAnnotationTag kPrefetchTrafficAnnotation = …;

}  // namespace

// Stores the status of all prefetches associated with a given |url|.
struct PrefetchInfo { … };

// Stores all data need for running a prefetch to a |url|.
struct PrefetchJob { … };

PrefetchStats::PrefetchStats(const GURL& url)
    : … { … }
PrefetchStats::~PrefetchStats() = default;

PrefetchManager::PrefetchManager(base::WeakPtr<Delegate> delegate,
                                 Profile* profile)
    : … { … }

PrefetchManager::~PrefetchManager() = default;

void PrefetchManager::Start(const GURL& url,
                            std::vector<PrefetchRequest> requests) { … }

void PrefetchManager::Stop(const GURL& url) { … }

blink::mojom::ResourceType GetResourceType(
    network::mojom::RequestDestination destination) { … }

void PrefetchManager::PrefetchUrl(
    std::unique_ptr<PrefetchJob> job,
    scoped_refptr<network::SharedURLLoaderFactory> factory) { … }

// Some params are unused but bound to this function to keep them alive until
// the load finishes.
void PrefetchManager::OnPrefetchFinished(
    std::unique_ptr<PrefetchJob> job,
    std::unique_ptr<blink::ThrottlingURLLoader> loader,
    std::unique_ptr<network::mojom::URLLoaderClient> client,
    const network::URLLoaderCompletionStatus& status) { … }

void PrefetchManager::TryToLaunchPrefetchJobs() { … }

void PrefetchManager::AllPrefetchJobsForUrlFinished(PrefetchInfo& info) { … }

}  // namespace predictors
chromium/chrome/browser/predictors/prefetch_manager.cc
