| // Copyright 2022 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/worker/fetch_event.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "cobalt/script/v8c/conversion_helpers.h" |
| #include "cobalt/script/v8c/v8c_value_handle.h" |
| #include "cobalt/web/cache_utils.h" |
| #include "cobalt/web/environment_settings_helper.h" |
| |
| namespace cobalt { |
| namespace worker { |
| |
| FetchEvent::FetchEvent(script::EnvironmentSettings* environment_settings, |
| const std::string& type, |
| const FetchEventInit& event_init_dict) |
| : FetchEvent(environment_settings, base::Token(type), event_init_dict, |
| RespondWithCallback(), ReportLoadTimingInfo()) {} |
| |
| FetchEvent::FetchEvent(script::EnvironmentSettings* environment_settings, |
| base::Token type, const FetchEventInit& event_init_dict, |
| RespondWithCallback respond_with_callback, |
| ReportLoadTimingInfo report_load_timing_info) |
| : ExtendableEvent(type, event_init_dict), |
| environment_settings_(environment_settings), |
| respond_with_callback_(std::move(respond_with_callback)), |
| report_load_timing_info_(std::move(report_load_timing_info)) { |
| auto script_value_factory = |
| web::get_script_value_factory(environment_settings_); |
| handled_property_ = std::make_unique<script::ValuePromiseVoid::Reference>( |
| this, script_value_factory->CreateBasicPromise<void>()); |
| request_ = std::make_unique<script::ValueHandleHolder::Reference>( |
| this, event_init_dict.request()); |
| |
| load_timing_info_.request_start = base::TimeTicks::Now(); |
| load_timing_info_.request_start_time = base::Time::Now(); |
| load_timing_info_.send_start = base::TimeTicks::Now(); |
| load_timing_info_.send_end = base::TimeTicks::Now(); |
| load_timing_info_.service_worker_start_time = base::TimeTicks::Now(); |
| } |
| |
| base::Optional<v8::Local<v8::Promise>> FetchEvent::GetText( |
| v8::Local<v8::Promise> response_promise) { |
| std::move(report_load_timing_info_).Run(load_timing_info_); |
| handled_property_->value().Resolve(); |
| return web::cache_utils::OptionalPromise( |
| web::cache_utils::Call(response_promise->Result(), "text")); |
| } |
| |
| base::Optional<v8::Local<v8::Promise>> FetchEvent::DoRespondWith( |
| v8::Local<v8::Promise> text_promise) { |
| auto* isolate = text_promise->GetIsolate(); |
| auto context = isolate->GetCurrentContext(); |
| auto resolver = v8::Promise::Resolver::New(context); |
| if (resolver.IsEmpty()) { |
| return base::nullopt; |
| } |
| auto body = web::cache_utils::FromV8String(text_promise->GetIsolate(), |
| text_promise->Result()); |
| auto callback = base::BindOnce( |
| [](v8::Local<v8::Context> context, |
| v8::Local<v8::Promise::Resolver> resolver) { |
| DCHECK(resolver->Resolve(context, v8::Undefined(resolver->GetIsolate())) |
| .FromMaybe(false)); |
| }, |
| context, resolver.ToLocalChecked()); |
| web::get_context(environment_settings_) |
| ->network_module() |
| ->task_runner() |
| ->PostTask( |
| FROM_HERE, |
| base::BindOnce( |
| [](RespondWithCallback respond_with_callback, std::string body, |
| base::MessageLoop* loop, base::OnceClosure callback) { |
| std::move(respond_with_callback) |
| .Run(std::make_unique<std::string>(std::move(body))); |
| loop->task_runner()->PostTask(FROM_HERE, std::move(callback)); |
| }, |
| std::move(respond_with_callback_), std::move(body), |
| base::MessageLoop::current(), std::move(callback))); |
| return resolver.ToLocalChecked()->GetPromise(); |
| } |
| |
| void FetchEvent::RespondWith( |
| std::unique_ptr<script::Promise<script::ValueHandle*>>& response, |
| script::ExceptionState* exception_state) { |
| respond_with_called_ = true; |
| |
| auto text_promise = web::cache_utils::Then( |
| response->promise(), |
| base::BindOnce(&FetchEvent::GetText, base::Unretained(this))); |
| if (!text_promise) { |
| return; |
| } |
| auto done_promise = web::cache_utils::Then( |
| text_promise.value(), |
| base::BindOnce(&FetchEvent::DoRespondWith, base::Unretained(this))); |
| if (!done_promise) { |
| return; |
| } |
| auto* isolate = response->promise()->GetIsolate(); |
| std::unique_ptr<script::Promise<script::ValueHandle*>> wait_promise; |
| script::v8c::FromJSValue(isolate, done_promise.value(), 0, exception_state, |
| &wait_promise); |
| WaitUntil(environment_settings_, wait_promise, exception_state); |
| } |
| |
| script::HandlePromiseVoid FetchEvent::handled() { |
| return script::HandlePromiseVoid(handled_property_->referenced_value()); |
| } |
| |
| } // namespace worker |
| } // namespace cobalt |