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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/fetch/global_fetch.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_request_init.h"
#include "third_party/blink/renderer/core/fetch/fetch_manager.h"
#include "third_party/blink/renderer/core/fetch/request.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/probe/core_probes.h"
#include "third_party/blink/renderer/core/workers/worker_global_scope.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "third_party/blink/renderer/platform/supplementable.h"
namespace blink {
namespace {
void MeasureFetchProperties(ExecutionContext* execution_context,
FetchRequestData* data) {
// 'redirect' measurement
if (data->Redirect() == network::mojom::RedirectMode::kError)
UseCounter::Count(execution_context, WebFeature::kFetchRedirectError);
else if (data->Redirect() == network::mojom::RedirectMode::kManual)
UseCounter::Count(execution_context, WebFeature::kFetchRedirectManual);
// 'cache' measurement: https://crbug.com/959789
if (data->CacheMode() == mojom::FetchCacheMode::kBypassCache)
UseCounter::Count(execution_context, WebFeature::kFetchCacheReload);
}
template <typename T>
class GlobalFetchImpl final : public GarbageCollected<GlobalFetchImpl<T>>,
public GlobalFetch::ScopedFetcher,
public Supplement<T> {
public:
static const char kSupplementName[];
static ScopedFetcher* From(T& supplementable,
ExecutionContext* execution_context) {
GlobalFetchImpl* supplement =
Supplement<T>::template From<GlobalFetchImpl>(supplementable);
if (!supplement) {
supplement = MakeGarbageCollected<GlobalFetchImpl>(execution_context);
Supplement<T>::ProvideTo(supplementable, supplement);
}
return supplement;
}
explicit GlobalFetchImpl(ExecutionContext* execution_context)
: fetch_manager_(MakeGarbageCollected<FetchManager>(execution_context)) {}
ScriptPromise Fetch(ScriptState* script_state,
const RequestInfo& input,
const RequestInit* init,
ExceptionState& exception_state) override {
fetch_count_ += 1;
ExecutionContext* execution_context = fetch_manager_->GetExecutionContext();
if (!script_state->ContextIsValid() || !execution_context) {
// TODO(yhirano): Should this be moved to bindings?
exception_state.ThrowTypeError("The global scope is shutting down.");
return ScriptPromise();
}
// "Let |r| be the associated request of the result of invoking the
// initial value of Request as constructor with |input| and |init| as
// arguments. If this throws an exception, reject |p| with it."
Request* r = Request::Create(script_state, input, init, exception_state);
if (exception_state.HadException())
return ScriptPromise();
probe::WillSendXMLHttpOrFetchNetworkRequest(execution_context, r->url());
FetchRequestData* request_data = r->PassRequestData(script_state);
MeasureFetchProperties(execution_context, request_data);
auto promise = fetch_manager_->Fetch(script_state, request_data,
r->signal(), exception_state);
if (exception_state.HadException())
return ScriptPromise();
return promise;
}
uint32_t FetchCount() const override { return fetch_count_; }
void Trace(Visitor* visitor) const override {
visitor->Trace(fetch_manager_);
ScopedFetcher::Trace(visitor);
Supplement<T>::Trace(visitor);
}
private:
Member<FetchManager> fetch_manager_;
uint32_t fetch_count_ = 0;
};
// static
template <typename T>
const char GlobalFetchImpl<T>::kSupplementName[] = "GlobalFetchImpl";
} // namespace
GlobalFetch::ScopedFetcher::~ScopedFetcher() {}
GlobalFetch::ScopedFetcher* GlobalFetch::ScopedFetcher::From(
LocalDOMWindow& window) {
return GlobalFetchImpl<LocalDOMWindow>::From(window,
window.GetExecutionContext());
}
GlobalFetch::ScopedFetcher* GlobalFetch::ScopedFetcher::From(
WorkerGlobalScope& worker) {
return GlobalFetchImpl<WorkerGlobalScope>::From(worker,
worker.GetExecutionContext());
}
void GlobalFetch::ScopedFetcher::Trace(Visitor* visitor) const {}
ScriptPromise GlobalFetch::fetch(ScriptState* script_state,
LocalDOMWindow& window,
const RequestInfo& input,
const RequestInit* init,
ExceptionState& exception_state) {
UseCounter::Count(window.GetExecutionContext(), WebFeature::kFetch);
if (!window.GetFrame()) {
exception_state.ThrowTypeError("The global scope is shutting down.");
return ScriptPromise();
}
return ScopedFetcher::From(window)->Fetch(script_state, input, init,
exception_state);
}
ScriptPromise GlobalFetch::fetch(ScriptState* script_state,
WorkerGlobalScope& worker,
const RequestInfo& input,
const RequestInit* init,
ExceptionState& exception_state) {
UseCounter::Count(worker.GetExecutionContext(), WebFeature::kFetch);
return ScopedFetcher::From(worker)->Fetch(script_state, input, init,
exception_state);
}
} // namespace blink
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