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content / services / auction_worklet / trusted_signals_request_manager.cc [blame]
// 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 "content/services/auction_worklet/trusted_signals_request_manager.h"
#include <stdint.h>
#include <cmath>
#include <memory>
#include <optional>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "base/check.h"
#include "base/containers/unique_ptr_adapters.h"
#include "base/feature_list.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_refptr.h"
#include "base/notreached.h"
#include "base/strings/stringprintf.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "content/common/content_export.h"
#include "content/services/auction_worklet/auction_v8_helper.h"
#include "content/services/auction_worklet/public/cpp/auction_network_events_delegate.h"
#include "content/services/auction_worklet/public/mojom/auction_worklet_service.mojom.h"
#include "content/services/auction_worklet/public/mojom/bidder_worklet.mojom.h"
#include "content/services/auction_worklet/trusted_kvv2_signals.h"
#include "content/services/auction_worklet/trusted_signals.h"
#include "content/services/auction_worklet/trusted_signals_kvv2_helper.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/network/public/mojom/url_loader_factory.mojom-forward.h"
#include "third_party/blink/public/common/features.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace auction_worklet {
// Manages building and loading trusted signals URLs. Provides a shared
// interface for bidding signals URLs and scoring signals URLs.
class TrustedSignalsRequestManager::TrustedSignalsUrlBuilder {
public:
TrustedSignalsUrlBuilder& operator=(const TrustedSignalsUrlBuilder&) = delete;
TrustedSignalsUrlBuilder(const TrustedSignalsUrlBuilder&) = delete;
virtual ~TrustedSignalsUrlBuilder() = default;
// Build a URL using the requests that have been added via `AddRequest`.
virtual GURL Build() = 0;
// Try including a new request in the URL. Return false if the request would
// make the URL too big. If `split_fetch_` is false, this will always return
// true.
virtual bool TryToAddRequest(RequestImpl* request) = 0;
// Reset the builder so that it can be used to build another URL.
void Reset() {
interest_group_names_.clear();
bidding_signals_keys_.clear();
render_urls_.clear();
ad_component_render_urls_.clear();
merged_requests_.clear();
length_limit_ = std::numeric_limits<size_t>::max();
added_first_request_ = false;
}
// Extract the requests that were included via `AddRequest`.
std::set<raw_ptr<RequestImpl, SetExperimental>, CompareRequestImpl>
TakeMergedRequests() {
return std::move(merged_requests_);
}
// Extract the attributes needed to build and create trusted bidding signals.
std::set<std::string> TakeInterestGroupNames() {
// We should never try to build a bidding signals URL without
// any interest group names.
DCHECK(interest_group_names_.size());
return std::move(interest_group_names_);
}
std::set<std::string> TakeBiddingSignalsKeys() {
return std::move(bidding_signals_keys_);
}
// Extract the attributes needed to build and create trusted scoring signals.
std::set<std::string> TakeRenderUrls() {
// We should never try to build a scoring signals URL without any
// render URLs.
DCHECK(render_urls_.size());
return std::move(render_urls_);
}
std::set<std::string> TakeAdComponentRenderUrls() {
return std::move(ad_component_render_urls_);
}
protected:
TrustedSignalsUrlBuilder(std::string hostname,
GURL trusted_signals_url,
std::optional<uint16_t> experiment_group_id,
bool split_fetch)
: hostname_(std::move(hostname)),
trusted_signals_url_(std::move(trusted_signals_url)),
experiment_group_id_(experiment_group_id),
split_fetch_(split_fetch) {}
bool AddRequestIfUrlNotTooBig(RequestImpl* request) {
if (!split_fetch_ || !added_first_request_ ||
Build().spec().size() <=
std::min(length_limit_, request->max_trusted_signals_url_length_)) {
merged_requests_.insert(request);
length_limit_ =
std::min(length_limit_, request->max_trusted_signals_url_length_);
added_first_request_ = true;
return true;
}
return false;
}
private:
friend class TrustedBiddingSignalsUrlBuilder;
friend class TrustedScoringSignalsUrlBuilder;
const std::string hostname_;
const GURL trusted_signals_url_;
const std::optional<uint16_t> experiment_group_id_;
// Whether the URL should be split based on length limits.
const bool split_fetch_;
// The maximum allowed length of a URL with this group of `merged_requests_`.
size_t length_limit_ = std::numeric_limits<size_t>::max();
// Whether a request has been added to `merged_requests_` yet.
bool added_first_request_ = false;
// Parameters for building a bidding signals URL.
std::set<std::string> interest_group_names_;
std::set<std::string> bidding_signals_keys_;
// Parameters for building a scoring signals URL.
std::set<std::string> render_urls_;
std::set<std::string> ad_component_render_urls_;
std::set<raw_ptr<RequestImpl, SetExperimental>, CompareRequestImpl>
merged_requests_;
};
class TrustedSignalsRequestManager::TrustedBiddingSignalsUrlBuilder
: public TrustedSignalsRequestManager::TrustedSignalsUrlBuilder {
public:
TrustedBiddingSignalsUrlBuilder(
std::string hostname,
GURL trusted_signals_url,
std::optional<uint16_t> experiment_group_id,
std::string trusted_bidding_signals_slot_size_param,
bool split_fetch)
: TrustedSignalsUrlBuilder(std::move(hostname),
std::move(trusted_signals_url),
experiment_group_id,
split_fetch),
trusted_bidding_signals_slot_size_param_(
std::move(trusted_bidding_signals_slot_size_param)) {}
TrustedBiddingSignalsUrlBuilder& operator=(
const TrustedBiddingSignalsUrlBuilder&) = delete;
TrustedBiddingSignalsUrlBuilder(const TrustedBiddingSignalsUrlBuilder&) =
delete;
~TrustedBiddingSignalsUrlBuilder() override = default;
// TrustedSignalsUrlBuilder implementation.
GURL Build() override {
return TrustedSignals::BuildTrustedBiddingSignalsURL(
hostname_, trusted_signals_url_, interest_group_names_,
bidding_signals_keys_, experiment_group_id_,
trusted_bidding_signals_slot_size_param_);
}
bool TryToAddRequest(RequestImpl* request) override {
// Keep track of iterators of newly inserted values so they can easily be
// removed if the URL gets too big.
auto name_inserted =
interest_group_names_.insert(request->interest_group_name_.value());
std::vector<std::set<std::string>::iterator> inserted_keys;
if (request->bidder_keys_.has_value()) {
for (const std::string& key : *request->bidder_keys_) {
auto inserted = bidding_signals_keys_.insert(key);
if (inserted.second) {
inserted_keys.push_back(inserted.first);
}
}
}
if (!AddRequestIfUrlNotTooBig(request)) {
if (name_inserted.second) {
interest_group_names_.erase(name_inserted.first);
}
for (const std::set<std::string>::iterator& key : inserted_keys) {
bidding_signals_keys_.erase(key);
}
return false;
}
return true;
}
private:
const std::string trusted_bidding_signals_slot_size_param_;
};
class TrustedSignalsRequestManager::TrustedScoringSignalsUrlBuilder
: public TrustedSignalsRequestManager::TrustedSignalsUrlBuilder {
public:
TrustedScoringSignalsUrlBuilder(std::string hostname,
GURL trusted_signals_url,
std::optional<uint16_t> experiment_group_id,
bool split_fetch)
: TrustedSignalsUrlBuilder(std::move(hostname),
std::move(trusted_signals_url),
experiment_group_id,
split_fetch) {}
TrustedScoringSignalsUrlBuilder& operator=(
const TrustedScoringSignalsUrlBuilder&) = delete;
TrustedScoringSignalsUrlBuilder(const TrustedScoringSignalsUrlBuilder&) =
delete;
~TrustedScoringSignalsUrlBuilder() override = default;
// TrustedSignalsUrlBuilder implementation.
GURL Build() override {
return TrustedSignals::BuildTrustedScoringSignalsURL(
hostname_, trusted_signals_url_, render_urls_,
ad_component_render_urls_, experiment_group_id_);
}
bool TryToAddRequest(RequestImpl* request) override {
// Keep track of iterators of newly inserted values so they can easily be
// removed if the URL gets too big.
auto added_render_url =
render_urls_.insert(request->render_url_.value().spec());
std::vector<std::set<std::string>::iterator> inserted_component_urls;
for (const std::string& render_url : *request->ad_component_render_urls_) {
auto inserted = ad_component_render_urls_.insert(render_url);
if (inserted.second) {
inserted_component_urls.push_back(inserted.first);
}
}
if (!AddRequestIfUrlNotTooBig(request)) {
if (added_render_url.second) {
render_urls_.erase(added_render_url.first);
}
for (const std::set<std::string>::iterator& component_url :
inserted_component_urls) {
ad_component_render_urls_.erase(component_url);
}
return false;
}
return true;
}
};
TrustedSignalsRequestManager::TrustedSignalsRequestManager(
Type type,
network::mojom::URLLoaderFactory* url_loader_factory,
mojo::PendingRemote<auction_worklet::mojom::AuctionNetworkEventsHandler>
auction_network_events_handler,
bool automatically_send_requests,
const url::Origin& top_level_origin,
const GURL& trusted_signals_url,
std::optional<uint16_t> experiment_group_id,
const std::string& trusted_bidding_signals_slot_size_param,
mojom::TrustedSignalsPublicKeyPtr public_key,
AuctionV8Helper* v8_helper)
: type_(type),
url_loader_factory_(url_loader_factory),
automatically_send_requests_(automatically_send_requests),
top_level_origin_(top_level_origin),
trusted_signals_url_(trusted_signals_url),
experiment_group_id_(experiment_group_id),
trusted_bidding_signals_slot_size_param_(
trusted_bidding_signals_slot_size_param),
public_key_(std::move(public_key)),
v8_helper_(v8_helper),
auction_network_events_handler_(
std::move(auction_network_events_handler)) {
// `trusted_bidding_signals_slot_size_param` are only supported for
// Type::kBiddingSignals.
DCHECK(trusted_bidding_signals_slot_size_param.empty() ||
type_ == Type::kBiddingSignals);
}
TrustedSignalsRequestManager::~TrustedSignalsRequestManager() {
// All outstanding Requests should have been destroyed before `this`.
DCHECK(queued_requests_.empty());
DCHECK(batched_requests_.empty());
}
std::unique_ptr<TrustedSignalsRequestManager::Request>
TrustedSignalsRequestManager::RequestBiddingSignals(
const std::string& interest_group_name,
const std::optional<std::vector<std::string>>& keys,
int32_t max_trusted_bidding_signals_url_length,
LoadSignalsCallback load_signals_callback) {
DCHECK_EQ(Type::kBiddingSignals, type_);
DCHECK(!public_key_);
auto request = std::make_unique<RequestImpl>(
this, interest_group_name,
keys ? std::set<std::string>(keys->begin(), keys->end())
: std::set<std::string>(),
max_trusted_bidding_signals_url_length, std::move(load_signals_callback));
QueueRequest(request.get());
return request;
}
std::unique_ptr<TrustedSignalsRequestManager::Request>
TrustedSignalsRequestManager::RequestScoringSignals(
const GURL& render_url,
const std::vector<std::string>& ad_component_render_urls,
int32_t max_trusted_scoring_signals_url_length,
LoadSignalsCallback load_signals_callback) {
DCHECK_EQ(Type::kScoringSignals, type_);
auto request = std::make_unique<RequestImpl>(
this, render_url,
std::set<std::string>(ad_component_render_urls.begin(),
ad_component_render_urls.end()),
max_trusted_scoring_signals_url_length, std::move(load_signals_callback));
QueueRequest(request.get());
return request;
}
std::unique_ptr<TrustedSignalsRequestManager::Request>
TrustedSignalsRequestManager::RequestKVv2BiddingSignals(
const std::string& interest_group_name,
const std::optional<std::vector<std::string>>& keys,
const url::Origin& joining_origin,
blink::mojom::InterestGroup::ExecutionMode execution_mode,
LoadSignalsCallback load_signals_callback) {
DCHECK_EQ(Type::kBiddingSignals, type_);
DCHECK(public_key_);
auto request = std::make_unique<RequestImpl>(
this, interest_group_name,
keys ? std::set<std::string>(keys->begin(), keys->end())
: std::set<std::string>(),
joining_origin, execution_mode, std::move(load_signals_callback));
QueueRequest(request.get());
return request;
}
std::unique_ptr<TrustedSignalsRequestManager::Request>
TrustedSignalsRequestManager::RequestKVv2ScoringSignals(
const GURL& render_url,
const std::vector<std::string>& ad_component_render_urls,
const url::Origin& bidder_owner_origin,
const url::Origin& bidder_joining_origin,
LoadSignalsCallback load_signals_callback) {
DCHECK_EQ(Type::kScoringSignals, type_);
auto request = std::make_unique<RequestImpl>(
this, render_url,
std::set<std::string>(ad_component_render_urls.begin(),
ad_component_render_urls.end()),
bidder_owner_origin, bidder_joining_origin,
std::move(load_signals_callback));
QueueRequest(request.get());
return request;
}
void TrustedSignalsRequestManager::IssueRequests(
TrustedSignalsUrlBuilder& url_builder) {
std::set<raw_ptr<RequestImpl, SetExperimental>, CompareRequestImpl>
merged_requests = url_builder.TakeMergedRequests();
DCHECK(!merged_requests.empty());
BatchedTrustedSignalsRequest* batched_request =
batched_requests_
.emplace(std::make_unique<BatchedTrustedSignalsRequest>())
.first->get();
batched_request->requests = std::move(merged_requests);
for (RequestImpl* request : batched_request->requests) {
request->batched_request_ = batched_request;
}
if (type_ == Type::kBiddingSignals) {
batched_request->trusted_signals = TrustedSignals::LoadBiddingSignals(
url_loader_factory_, /*auction_network_events_handler=*/
CreateNewAuctionNetworkEventsHandlerRemote(
auction_network_events_handler_),
url_builder.TakeInterestGroupNames(),
url_builder.TakeBiddingSignalsKeys(), top_level_origin_.host(),
trusted_signals_url_, experiment_group_id_,
trusted_bidding_signals_slot_size_param_, v8_helper_,
base::BindOnce(&TrustedSignalsRequestManager::OnSignalsLoaded,
base::Unretained(this), batched_request));
} else {
batched_request->trusted_signals = TrustedSignals::LoadScoringSignals(
url_loader_factory_,
/*auction_network_events_handler=*/
CreateNewAuctionNetworkEventsHandlerRemote(
auction_network_events_handler_),
url_builder.TakeRenderUrls(), url_builder.TakeAdComponentRenderUrls(),
top_level_origin_.host(), trusted_signals_url_, experiment_group_id_,
v8_helper_,
base::BindOnce(&TrustedSignalsRequestManager::OnSignalsLoaded,
base::Unretained(this), batched_request));
}
}
void TrustedSignalsRequestManager::StartBatchedTrustedSignalsRequest() {
if (queued_requests_.empty()) {
// The timer should never be running when there are no pending requests.
DCHECK(!timer_.IsRunning());
return;
}
// No need to continue running the timer, if it's running.
timer_.Stop();
// Trusted Signals KVv2 feature call flow.
if (public_key_) {
DCHECK(base::FeatureList::IsEnabled(
blink::features::kFledgeTrustedSignalsKVv2Support));
BatchedTrustedSignalsRequest* batched_request =
batched_requests_
.emplace(std::make_unique<BatchedTrustedSignalsRequest>())
.first->get();
batched_request->requests = std::move(queued_requests_);
if (type_ == Type::kBiddingSignals) {
// Append all interest group names and keys into a single set, and clear
// them from each request, as they're no longer needed.
std::set<std::string> interest_group_names;
std::set<std::string> bidding_keys;
auto helper_builder(
std::make_unique<TrustedBiddingSignalsKVv2RequestHelperBuilder>(
top_level_origin_.host(), experiment_group_id_,
public_key_->Clone(), trusted_bidding_signals_slot_size_param_));
for (auto& request : batched_request->requests) {
CHECK(request->interest_group_name_.has_value());
CHECK(request->bidder_keys_.has_value());
CHECK(request->joining_origin_.has_value());
CHECK(request->execution_mode_.has_value());
request->SetKVv2IsolationIndex(helper_builder->AddTrustedSignalsRequest(
request->interest_group_name_.value(),
request->bidder_keys_.value(), request->joining_origin_.value(),
request->execution_mode_.value()));
interest_group_names.emplace(
std::move(request->interest_group_name_).value());
bidding_keys.insert(request->bidder_keys_->begin(),
request->bidder_keys_->end());
request->bidder_keys_.reset();
request->batched_request_ = batched_request;
}
// Using `Unretained(`) for `OnKVv2SignalsLoaded()` is safe because it is
// triggered by
// `TrustedKVv2Signals::HandleKVv2DownloadResultOnV8Thread()`, which is
// protected by a WeakPtr. Additionally, the trusted_kvv2_signals object
// is owned by the `batched_requests_` of the
// trusted_signals_request_manager object, ensuring its lifetime is
// managed appropriately.
batched_request->trusted_kvv2_signals =
TrustedKVv2Signals::LoadKVv2BiddingSignals(
url_loader_factory_, /*auction_network_events_handler=*/
CreateNewAuctionNetworkEventsHandlerRemote(
auction_network_events_handler_),
interest_group_names, bidding_keys, trusted_signals_url_,
std::move(helper_builder), v8_helper_,
base::BindOnce(&TrustedSignalsRequestManager::OnKVv2SignalsLoaded,
base::Unretained(this), batched_request));
} else {
// Append all render urls and ad component render urls into a single set,
// and clear them from each request, as they're no longer needed.
std::set<std::string> render_urls;
std::set<std::string> ad_component_render_urls;
auto helper_builder(
std::make_unique<TrustedScoringSignalsKVv2RequestHelperBuilder>(
top_level_origin_.host(), experiment_group_id_,
public_key_->Clone()));
for (auto& request : batched_request->requests) {
CHECK(request->render_url_.has_value());
CHECK(request->ad_component_render_urls_.has_value());
CHECK(request->bidder_owner_origin_.has_value());
CHECK(request->bidder_joining_origin_.has_value());
request->SetKVv2IsolationIndex(helper_builder->AddTrustedSignalsRequest(
request->render_url_.value(),
request->ad_component_render_urls_.value(),
request->bidder_owner_origin_.value(),
request->bidder_joining_origin_.value()));
render_urls.emplace(request->render_url_->spec());
ad_component_render_urls.insert(
request->ad_component_render_urls_->begin(),
request->ad_component_render_urls_->end());
request->render_url_.reset();
request->batched_request_ = batched_request;
}
// The claim regarding the `Unretained()` lifetime guarantee is the same
// as in the bidding signals case.
batched_request->trusted_kvv2_signals =
TrustedKVv2Signals::LoadKVv2ScoringSignals(
url_loader_factory_, /*auction_network_events_handler=*/
CreateNewAuctionNetworkEventsHandlerRemote(
auction_network_events_handler_),
render_urls, ad_component_render_urls, trusted_signals_url_,
std::move(helper_builder), v8_helper_,
base::BindOnce(&TrustedSignalsRequestManager::OnKVv2SignalsLoaded,
base::Unretained(this), batched_request));
}
return;
}
std::unique_ptr<TrustedSignalsUrlBuilder> url_builder;
bool split_fetch = base::FeatureList::IsEnabled(
blink::features::kFledgeSplitTrustedSignalsFetchingURL);
if (type_ == Type::kBiddingSignals) {
url_builder = std::make_unique<TrustedBiddingSignalsUrlBuilder>(
top_level_origin_.host(), trusted_signals_url_, experiment_group_id_,
trusted_bidding_signals_slot_size_param_, split_fetch);
} else {
url_builder = std::make_unique<TrustedScoringSignalsUrlBuilder>(
top_level_origin_.host(), trusted_signals_url_, experiment_group_id_,
split_fetch);
}
for (auto& request : queued_requests_) {
if (!url_builder->TryToAddRequest(request)) {
// The url got too big so split out what we already have.
IssueRequests(*url_builder.get());
url_builder->Reset();
url_builder->TryToAddRequest(request);
}
}
IssueRequests(*url_builder.get());
queued_requests_.clear();
return;
}
bool TrustedSignalsRequestManager::HasPublicKey() {
return !public_key_.is_null();
}
TrustedSignalsRequestManager::RequestImpl::RequestImpl(
TrustedSignalsRequestManager* trusted_signals_request_manager,
const std::string& interest_group_name,
std::set<std::string> bidder_keys,
int32_t max_trusted_bidding_signals_url_length,
LoadSignalsCallback load_signals_callback)
: interest_group_name_(interest_group_name),
bidder_keys_(std::move(bidder_keys)),
load_signals_callback_(std::move(load_signals_callback)),
trusted_signals_request_manager_(trusted_signals_request_manager) {
DCHECK(max_trusted_bidding_signals_url_length >= 0);
if (max_trusted_bidding_signals_url_length == 0) {
max_trusted_signals_url_length_ = std::numeric_limits<int>::max();
} else {
max_trusted_signals_url_length_ =
base::checked_cast<size_t>(max_trusted_bidding_signals_url_length);
}
}
TrustedSignalsRequestManager::RequestImpl::RequestImpl(
TrustedSignalsRequestManager* trusted_signals_request_manager,
const GURL& render_url,
std::set<std::string> ad_component_render_urls,
int32_t max_trusted_scoring_signals_url_length,
LoadSignalsCallback load_signals_callback)
: render_url_(render_url),
ad_component_render_urls_(std::move(ad_component_render_urls)),
load_signals_callback_(std::move(load_signals_callback)),
trusted_signals_request_manager_(trusted_signals_request_manager) {
DCHECK(max_trusted_scoring_signals_url_length >= 0);
if (max_trusted_scoring_signals_url_length == 0) {
max_trusted_signals_url_length_ = std::numeric_limits<int>::max();
} else {
max_trusted_signals_url_length_ =
base::checked_cast<size_t>(max_trusted_scoring_signals_url_length);
}
}
TrustedSignalsRequestManager::RequestImpl::RequestImpl(
TrustedSignalsRequestManager* trusted_signals_request_manager,
const std::string& interest_group_name,
std::set<std::string> bidder_keys,
const url::Origin& joining_origin,
blink::mojom::InterestGroup::ExecutionMode execution_mode,
LoadSignalsCallback load_signals_callback)
: interest_group_name_(interest_group_name),
bidder_keys_(std::move(bidder_keys)),
joining_origin_(joining_origin),
execution_mode_(execution_mode),
load_signals_callback_(std::move(load_signals_callback)),
trusted_signals_request_manager_(trusted_signals_request_manager) {}
TrustedSignalsRequestManager::RequestImpl::RequestImpl(
TrustedSignalsRequestManager* trusted_signals_request_manager,
const GURL& render_url,
std::set<std::string> ad_component_render_urls,
const url::Origin& bidder_owner_origin,
const url::Origin& bidder_joining_origin,
LoadSignalsCallback load_signals_callback)
: render_url_(render_url),
ad_component_render_urls_(std::move(ad_component_render_urls)),
bidder_owner_origin_(bidder_owner_origin),
bidder_joining_origin_(bidder_joining_origin),
load_signals_callback_(std::move(load_signals_callback)),
trusted_signals_request_manager_(trusted_signals_request_manager) {}
TrustedSignalsRequestManager::RequestImpl::~RequestImpl() {
if (trusted_signals_request_manager_) {
trusted_signals_request_manager_->OnRequestDestroyed(this);
}
}
void TrustedSignalsRequestManager::RequestImpl::SetKVv2IsolationIndex(
TrustedSignalsKVv2RequestHelperBuilder::IsolationIndex index) {
kvv2_isolation_index_ = index;
}
TrustedSignalsRequestManager::BatchedTrustedSignalsRequest::
BatchedTrustedSignalsRequest() = default;
TrustedSignalsRequestManager::BatchedTrustedSignalsRequest::
~BatchedTrustedSignalsRequest() = default;
bool TrustedSignalsRequestManager::CompareRequestImpl::operator()(
const RequestImpl* r1,
const RequestImpl* r2) const {
if (r1->interest_group_name_.has_value() &&
r2->interest_group_name_.has_value()) {
DCHECK(!r1->render_url_.has_value() && !r2->render_url_.has_value());
return std::tie(r1->interest_group_name_, r1) <
std::tie(r2->interest_group_name_, r2);
} else {
DCHECK(r1->render_url_.has_value() && r2->render_url_.has_value());
return std::tie(r1->render_url_, r1) < std::tie(r2->render_url_, r2);
}
}
void TrustedSignalsRequestManager::OnSignalsLoaded(
BatchedTrustedSignalsRequest* batched_request,
scoped_refptr<Result> result,
std::optional<std::string> error_msg) {
DCHECK(batched_requests_.find(batched_request) != batched_requests_.end());
for (RequestImpl* request : batched_request->requests) {
DCHECK_EQ(request->batched_request_, batched_request);
// Remove association with `this` and `batched_request` before invoking
// callback, which may destroy the Request.
request->trusted_signals_request_manager_ = nullptr;
request->batched_request_ = nullptr;
// It is illegal for this this to destroy another request, so
// `batched_request->requests` should not be affected by invoking this,
// other than the current element's pointer potentially now pointing to a
// destroyed object.
std::move(request->load_signals_callback_).Run(result, error_msg);
}
batched_requests_.erase(batched_requests_.find(batched_request));
}
void TrustedSignalsRequestManager::OnKVv2SignalsLoaded(
BatchedTrustedSignalsRequest* batched_request,
std::optional<TrustedSignalsKVv2ResponseParser::TrustedSignalsResultMap>
result_map,
std::optional<std::string> error_msg) {
DCHECK(batched_requests_.find(batched_request) != batched_requests_.end());
for (RequestImpl* request : batched_request->requests) {
DCHECK_EQ(request->batched_request_, batched_request);
// Remove association with `this` and `batched_request` before invoking
// callback, which may destroy the Request.
request->trusted_signals_request_manager_ = nullptr;
request->batched_request_ = nullptr;
if (result_map.has_value()) {
DCHECK(request->kvv2_isolation_index_);
auto result_it = result_map->find(request->kvv2_isolation_index_.value());
if (result_it != result_map->end()) {
std::move(request->load_signals_callback_)
.Run(result_it->second, error_msg);
} else {
std::move(request->load_signals_callback_)
.Run(nullptr,
base::StringPrintf(
"Failed to locate compression group \"%d\" and "
"partition \"%d\" in the result map.",
request->kvv2_isolation_index_->compression_group_id,
request->kvv2_isolation_index_->partition_id));
}
} else {
std::move(request->load_signals_callback_).Run(nullptr, error_msg);
}
}
batched_requests_.erase(batched_requests_.find(batched_request));
}
void TrustedSignalsRequestManager::OnRequestDestroyed(RequestImpl* request) {
// If the request is not assigned to a BatchedTrustedSignalsRequest, it's
// still in `queued_requests_`, so remove it from that.
if (!request->batched_request_) {
size_t removed = queued_requests_.erase(request);
DCHECK_EQ(removed, 1u);
// If there are no more requests, stop the timer.
if (queued_requests_.empty()) {
timer_.Stop();
}
return;
}
// Otherwise, it should not be in `queued_requests_`.
DCHECK_EQ(queued_requests_.count(request), 0u);
// But it should be in the `requests` set of the
// BatchedTrustedSignalsRequest it's pointing to.
size_t removed = request->batched_request_->requests.erase(request);
DCHECK_EQ(removed, 1u);
// Cancel and delete the corresponding BatchedTrustedSignalsRequest if it's
// no longer associated with any live requests.
if (request->batched_request_->requests.empty()) {
BatchedTrustedSignalsRequest* batched_request = request->batched_request_;
request->batched_request_ = nullptr;
batched_requests_.erase(batched_requests_.find(batched_request));
}
}
void TrustedSignalsRequestManager::QueueRequest(RequestImpl* request) {
// If the timer is not running, then either `automatically_send_requests_`
// is false, or no requests should be in `queued_requests_`.
DCHECK_EQ(timer_.IsRunning(),
automatically_send_requests_ && !queued_requests_.empty());
queued_requests_.insert(request);
if (automatically_send_requests_ && !timer_.IsRunning()) {
timer_.Start(
FROM_HERE, kAutoSendDelay,
base::BindOnce(
&TrustedSignalsRequestManager::StartBatchedTrustedSignalsRequest,
base::Unretained(this)));
}
}
} // namespace auction_worklet