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content / browser / background_fetch / storage / create_metadata_task.cc [blame]
// Copyright 2017 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/background_fetch/storage/create_metadata_task.h"
#include <numeric>
#include <set>
#include <utility>
#include "base/barrier_closure.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/observer_list.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/trace_event/trace_event.h"
#include "content/browser/background_fetch/background_fetch_data_manager.h"
#include "content/browser/background_fetch/background_fetch_data_manager_observer.h"
#include "content/browser/background_fetch/storage/database_helpers.h"
#include "content/browser/background_fetch/storage/image_helpers.h"
#include "content/browser/background_fetch/storage/mark_registration_for_deletion_task.h"
#include "content/browser/service_worker/service_worker_context_wrapper.h"
#include "content/common/background_fetch/background_fetch_types.h"
#include "content/common/fetch/fetch_api_request_proto.h"
#include "third_party/blink/public/common/cache_storage/cache_storage_utils.h"
#include "third_party/blink/public/common/service_worker/service_worker_status_code.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
#include "third_party/blink/public/mojom/fetch/fetch_api_request.mojom.h"
namespace content {
namespace background_fetch {
namespace {
// TODO(crbug.com/40595478): Consider making this configurable by finch.
constexpr size_t kRegistrationLimitPerStorageKey = 5u;
// Finds the number of active registrations associated with the provided storage
// key, and compares it with the limit to determine whether this registration
// can go through.
class CanCreateRegistrationTask : public DatabaseTask {
public:
using CanCreateRegistrationCallback =
base::OnceCallback<void(blink::mojom::BackgroundFetchError, bool)>;
CanCreateRegistrationTask(DatabaseTaskHost* host,
const blink::StorageKey& storage_key,
CanCreateRegistrationCallback callback)
: DatabaseTask(host),
storage_key_(storage_key),
callback_(std::move(callback)) {}
~CanCreateRegistrationTask() override = default;
void Start() override {
service_worker_context()->GetRegistrationsForStorageKey(
storage_key_,
base::BindOnce(
&CanCreateRegistrationTask::DidGetRegistrationsForStorageKey,
weak_factory_.GetWeakPtr()));
}
private:
void DidGetRegistrationsForStorageKey(
blink::ServiceWorkerStatusCode status,
const std::vector<scoped_refptr<ServiceWorkerRegistration>>&
registrations) {
switch (ToDatabaseStatus(status)) {
case DatabaseStatus::kOk:
break;
case DatabaseStatus::kNotFound:
FinishWithError(blink::mojom::BackgroundFetchError::NONE);
return;
case DatabaseStatus::kFailed:
FinishWithError(blink::mojom::BackgroundFetchError::STORAGE_ERROR);
return;
}
std::set<int64_t> registration_ids;
for (const auto& registration : registrations)
registration_ids.insert(registration->id());
base::RepeatingClosure barrier_closure = base::BarrierClosure(
registration_ids.size(),
base::BindOnce(&CanCreateRegistrationTask::FinishWithError,
weak_factory_.GetWeakPtr(),
blink::mojom::BackgroundFetchError::NONE));
for (int64_t registration_id : registration_ids) {
service_worker_context()->GetRegistrationUserDataByKeyPrefix(
registration_id, kActiveRegistrationUniqueIdKeyPrefix,
base::BindOnce(&CanCreateRegistrationTask::DidGetActiveRegistrations,
weak_factory_.GetWeakPtr(), barrier_closure));
}
}
void DidGetActiveRegistrations(base::OnceClosure done_closure,
const std::vector<std::string>& data,
blink::ServiceWorkerStatusCode status) {
switch (ToDatabaseStatus(status)) {
case DatabaseStatus::kNotFound:
std::move(done_closure).Run();
return;
case DatabaseStatus::kOk:
num_active_registrations_ += data.size();
std::move(done_closure).Run();
return;
case DatabaseStatus::kFailed:
FinishWithError(blink::mojom::BackgroundFetchError::STORAGE_ERROR);
return;
}
}
void FinishWithError(blink::mojom::BackgroundFetchError error) override {
std::move(callback_).Run(
error, num_active_registrations_ < kRegistrationLimitPerStorageKey);
Finished(); // Destroys |this|.
}
blink::StorageKey storage_key_;
CanCreateRegistrationCallback callback_;
// The number of existing registrations found for |origin_|.
size_t num_active_registrations_ = 0u;
base::WeakPtrFactory<CanCreateRegistrationTask> weak_factory_{
this}; // Keep as last.
};
proto::ImageResource_Purpose
ManifestImageResourcePurposeToImageResoucePurposeProto(
blink::mojom::ManifestImageResource_Purpose purpose) {
switch (purpose) {
case blink::mojom::ManifestImageResource_Purpose::ANY:
return proto::ImageResource_Purpose_ANY;
case blink::mojom::ManifestImageResource_Purpose::MONOCHROME:
return proto::ImageResource_Purpose_MONOCHROME;
case blink::mojom::ManifestImageResource_Purpose::MASKABLE:
return proto::ImageResource_Purpose_MASKABLE;
}
}
} // namespace
CreateMetadataTask::CreateMetadataTask(
DatabaseTaskHost* host,
const BackgroundFetchRegistrationId& registration_id,
std::vector<blink::mojom::FetchAPIRequestPtr> requests,
blink::mojom::BackgroundFetchOptionsPtr options,
const SkBitmap& icon,
bool start_paused,
const net::IsolationInfo& isolation_info,
CreateMetadataCallback callback)
: DatabaseTask(host),
registration_id_(registration_id),
requests_(std::move(requests)),
options_(std::move(options)),
icon_(icon),
start_paused_(start_paused),
isolation_info_(isolation_info),
callback_(std::move(callback)) {}
CreateMetadataTask::~CreateMetadataTask() = default;
void CreateMetadataTask::Start() {
// Check if the registration can be created.
AddSubTask(std::make_unique<CanCreateRegistrationTask>(
this, registration_id_.storage_key(),
base::BindOnce(&CreateMetadataTask::DidGetCanCreateRegistration,
weak_factory_.GetWeakPtr())));
}
void CreateMetadataTask::DidGetCanCreateRegistration(
blink::mojom::BackgroundFetchError error,
bool can_create) {
if (error == blink::mojom::BackgroundFetchError::STORAGE_ERROR) {
SetStorageErrorAndFinish(
BackgroundFetchStorageError::kServiceWorkerStorageError);
return;
}
DCHECK_EQ(error, blink::mojom::BackgroundFetchError::NONE);
if (!can_create) {
FinishWithError(
blink::mojom::BackgroundFetchError::REGISTRATION_LIMIT_EXCEEDED);
return;
}
// Check if there is enough quota to download the data first.
if (options_->download_total > 0) {
IsQuotaAvailable(registration_id_.storage_key(), options_->download_total,
base::BindOnce(&CreateMetadataTask::DidGetIsQuotaAvailable,
weak_factory_.GetWeakPtr()));
} else {
// Proceed with the fetch.
GetRegistrationUniqueId();
}
}
void CreateMetadataTask::DidGetIsQuotaAvailable(bool is_available) {
if (!is_available)
FinishWithError(blink::mojom::BackgroundFetchError::QUOTA_EXCEEDED);
else
GetRegistrationUniqueId();
}
void CreateMetadataTask::GetRegistrationUniqueId() {
service_worker_context()->GetRegistrationUserData(
registration_id_.service_worker_registration_id(),
{ActiveRegistrationUniqueIdKey(registration_id_.developer_id())},
base::BindOnce(&CreateMetadataTask::DidGetUniqueId,
weak_factory_.GetWeakPtr()));
}
void CreateMetadataTask::DidGetUniqueId(const std::vector<std::string>& data,
blink::ServiceWorkerStatusCode status) {
switch (ToDatabaseStatus(status)) {
case DatabaseStatus::kNotFound:
break;
case DatabaseStatus::kOk:
// Can't create a registration since there is already an active
// registration with the same |developer_id|. It must be deactivated
// (completed/failed/aborted) first.
FinishWithError(
blink::mojom::BackgroundFetchError::DUPLICATED_DEVELOPER_ID);
return;
case DatabaseStatus::kFailed:
SetStorageErrorAndFinish(
BackgroundFetchStorageError::kServiceWorkerStorageError);
return;
}
InitializeMetadataProto();
if (ShouldPersistIcon(icon_)) {
// Serialize the icon, then store all the metadata.
SerializeIcon(icon_, base::BindOnce(&CreateMetadataTask::DidSerializeIcon,
weak_factory_.GetWeakPtr()));
} else {
// Directly store the metadata.
StoreMetadata();
}
}
void CreateMetadataTask::InitializeMetadataProto() {
metadata_proto_ = std::make_unique<proto::BackgroundFetchMetadata>();
// Set BackgroundFetchRegistration fields.
auto* registration_proto = metadata_proto_->mutable_registration();
registration_proto->set_unique_id(registration_id_.unique_id());
registration_proto->set_developer_id(registration_id_.developer_id());
registration_proto->set_download_total(options_->download_total);
registration_proto->set_result(
proto::BackgroundFetchRegistration_BackgroundFetchResult_UNSET);
registration_proto->set_failure_reason(
proto::BackgroundFetchRegistration_BackgroundFetchFailureReason_NONE);
registration_proto->set_upload_total(
std::accumulate(requests_.begin(), requests_.end(), 0u,
[](uint64_t sum, const auto& request) {
return sum + (request->blob ? request->blob->size : 0u);
}));
// Set Options fields.
auto* options_proto = metadata_proto_->mutable_options();
options_proto->set_title(options_->title);
options_proto->set_download_total(options_->download_total);
for (const auto& icon : options_->icons) {
auto* image_resource_proto = options_proto->add_icons();
image_resource_proto->set_src(icon.src.spec());
for (const auto& size : icon.sizes) {
auto* size_proto = image_resource_proto->add_sizes();
size_proto->set_width(size.width());
size_proto->set_height(size.height());
}
image_resource_proto->set_type(base::UTF16ToASCII(icon.type));
for (const auto& purpose : icon.purpose) {
image_resource_proto->add_purpose(
ManifestImageResourcePurposeToImageResoucePurposeProto(purpose));
}
}
// Set other metadata fields.
metadata_proto_->set_storage_key(registration_id_.storage_key().Serialize());
metadata_proto_->set_creation_microseconds_since_unix_epoch(
(base::Time::Now() - base::Time::UnixEpoch()).InMicroseconds());
metadata_proto_->set_num_fetches(requests_.size());
metadata_proto_->set_isolation_info(isolation_info_.Serialize());
}
void CreateMetadataTask::DidSerializeIcon(std::string serialized_icon) {
serialized_icon_ = std::move(serialized_icon);
StoreMetadata();
}
void CreateMetadataTask::StoreMetadata() {
DCHECK(metadata_proto_);
std::vector<std::pair<std::string, std::string>> entries;
// - One BackgroundFetchPendingRequest per request
// - DeveloperId -> UniqueID
// - BackgroundFetchMetadata
// - BackgroundFetchUIOptions
// - BackgroundFetchStorageVersion
entries.reserve(requests_.size() + 4u);
std::string serialized_metadata_proto;
if (!metadata_proto_->SerializeToString(&serialized_metadata_proto)) {
SetStorageErrorAndFinish(
BackgroundFetchStorageError::kServiceWorkerStorageError);
return;
}
std::string serialized_ui_options_proto;
proto::BackgroundFetchUIOptions ui_options;
ui_options.set_title(options_->title);
if (!serialized_icon_.empty())
ui_options.set_icon(std::move(serialized_icon_));
if (!ui_options.SerializeToString(&serialized_ui_options_proto)) {
SetStorageErrorAndFinish(
BackgroundFetchStorageError::kServiceWorkerStorageError);
return;
}
entries.emplace_back(
ActiveRegistrationUniqueIdKey(registration_id_.developer_id()),
registration_id_.unique_id());
entries.emplace_back(RegistrationKey(registration_id_.unique_id()),
std::move(serialized_metadata_proto));
entries.emplace_back(UIOptionsKey(registration_id_.unique_id()),
serialized_ui_options_proto);
entries.emplace_back(
StorageVersionKey(registration_id_.unique_id()),
base::NumberToString(proto::BackgroundFetchStorageVersion::SV_CURRENT));
// Signed integers are used for request indexes to avoid unsigned gotchas.
for (int i = 0; i < base::checked_cast<int>(requests_.size()); i++) {
proto::BackgroundFetchPendingRequest pending_request_proto;
pending_request_proto.set_unique_id(registration_id_.unique_id());
pending_request_proto.set_request_index(i);
pending_request_proto.set_serialized_request(
SerializeFetchRequestToString(*requests_[i]));
if (requests_[i]->blob)
pending_request_proto.set_request_body_size(requests_[i]->blob->size);
entries.emplace_back(PendingRequestKey(registration_id_.unique_id(), i),
pending_request_proto.SerializeAsString());
}
service_worker_context()->StoreRegistrationUserData(
registration_id_.service_worker_registration_id(),
registration_id_.storage_key(), entries,
base::BindOnce(&CreateMetadataTask::DidStoreMetadata,
weak_factory_.GetWeakPtr()));
}
void CreateMetadataTask::DidStoreMetadata(
blink::ServiceWorkerStatusCode status) {
int64_t trace_id = blink::cache_storage::CreateTraceId();
TRACE_EVENT_WITH_FLOW0("CacheStorage",
"CacheStorageMigrationTask::DidStoreMetadata",
TRACE_ID_GLOBAL(trace_id), TRACE_EVENT_FLAG_FLOW_OUT);
switch (ToDatabaseStatus(status)) {
case DatabaseStatus::kOk:
break;
case DatabaseStatus::kFailed:
case DatabaseStatus::kNotFound:
SetStorageErrorAndFinish(
BackgroundFetchStorageError::kServiceWorkerStorageError);
return;
}
// Create cache entries.
OpenCache(registration_id_, trace_id,
base::BindOnce(&CreateMetadataTask::DidOpenCache,
weak_factory_.GetWeakPtr(), trace_id));
}
void CreateMetadataTask::DidOpenCache(int64_t trace_id,
blink::mojom::CacheStorageError error) {
TRACE_EVENT_WITH_FLOW0("CacheStorage",
"CacheStorageMigrationTask::DidReopenCache",
TRACE_ID_GLOBAL(trace_id),
TRACE_EVENT_FLAG_FLOW_IN | TRACE_EVENT_FLAG_FLOW_OUT);
if (error != blink::mojom::CacheStorageError::kSuccess) {
SetStorageErrorAndFinish(BackgroundFetchStorageError::kCacheStorageError);
return;
}
if (requests_.empty()) {
FinishWithError(blink::mojom::BackgroundFetchError::NONE);
return;
}
// Create batch PUT operations instead of putting them one-by-one.
std::vector<blink::mojom::BatchOperationPtr> operations;
operations.reserve(requests_.size());
for (size_t i = 0; i < requests_.size(); i++) {
auto operation = blink::mojom::BatchOperation::New();
operation->operation_type = blink::mojom::OperationType::kPut;
requests_[i]->url =
MakeCacheUrlUnique(requests_[i]->url, registration_id_.unique_id(), i);
operation->request = std::move(requests_[i]);
// Empty response.
operation->response = blink::mojom::FetchAPIResponse::New();
operations.emplace_back(std::move(operation));
}
cache_storage_cache_remote()->Batch(
std::move(operations), trace_id,
base::BindOnce(&CreateMetadataTask::DidStoreRequests,
weak_factory_.GetWeakPtr()));
}
void CreateMetadataTask::DidStoreRequests(
blink::mojom::CacheStorageVerboseErrorPtr error) {
if (error->value != blink::mojom::CacheStorageError::kSuccess) {
// Delete the metadata in the SWDB.
AddDatabaseTask(std::make_unique<MarkRegistrationForDeletionTask>(
data_manager(), registration_id_, /* check_for_failure= */ false,
base::DoNothing()));
SetStorageErrorAndFinish(BackgroundFetchStorageError::kCacheStorageError);
return;
}
FinishWithError(blink::mojom::BackgroundFetchError::NONE);
}
void CreateMetadataTask::FinishWithError(
blink::mojom::BackgroundFetchError error) {
auto registration_data = blink::mojom::BackgroundFetchRegistrationData::New();
if (error == blink::mojom::BackgroundFetchError::NONE) {
DCHECK(metadata_proto_);
bool converted = ToBackgroundFetchRegistration(*metadata_proto_,
registration_data.get());
if (!converted) {
// Database corrupted.
SetStorageErrorAndFinish(
BackgroundFetchStorageError::kServiceWorkerStorageError);
return;
}
for (auto& observer : data_manager()->observers()) {
observer.OnRegistrationCreated(registration_id_, *registration_data,
options_.Clone(), icon_, requests_.size(),
start_paused_, std::move(isolation_info_));
}
}
std::move(callback_).Run(error, std::move(registration_data));
Finished(); // Destroys |this|.
}
} // namespace background_fetch
} // namespace content