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// Copyright 2018 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/modules/service_worker/service_worker_module_tree_client.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/script/module_script.h"
#include "third_party/blink/renderer/core/workers/worker_global_scope.h"
#include "third_party/blink/renderer/core/workers/worker_reporting_proxy.h"
namespace blink {
ServiceWorkerModuleTreeClient::ServiceWorkerModuleTreeClient(
Modulator* modulator)
: modulator_(modulator) {}
// This client is used for both new and installed scripts. In the new scripts
// case, this is a partial implementation of the custom "perform the fetch" hook
// in the spec: https://w3c.github.io/ServiceWorker/#update-algorithm For
// installed scripts, there is no corresponding specification text because there
// is no fetching process there. The service worker simply uses its associated
// script resource.
void ServiceWorkerModuleTreeClient::NotifyModuleTreeLoadFinished(
ModuleScript* module_script) {
auto* execution_context =
ExecutionContext::From(modulator_->GetScriptState());
auto* worker_global_scope = To<WorkerGlobalScope>(execution_context);
blink::WorkerReportingProxy& worker_reporting_proxy =
worker_global_scope->ReportingProxy();
if (!module_script) {
// (In the update case) Step 9: "If the algorithm asynchronously completes
// with null, then: Invoke Reject Job Promise with job and TypeError."
// DidFailToFetchModuleScript() signals that startup failed, which causes
// ServiceWorkerRegisterJob to reject the job promise.
worker_reporting_proxy.DidFailToFetchModuleScript();
worker_global_scope->close();
return;
}
// (In the update case) Step 9: "Else, continue the rest of these steps after
// the algorithm's asynchronous completion, with script being the asynchronous
// completion value."
worker_reporting_proxy.WillEvaluateModuleScript();
ScriptValue error = modulator_->ExecuteModule(
module_script, Modulator::CaptureEvalErrorFlag::kReport);
worker_reporting_proxy.DidEvaluateModuleScript(error.IsEmpty());
}
void ServiceWorkerModuleTreeClient::Trace(blink::Visitor* visitor) {
visitor->Trace(modulator_);
ModuleTreeClient::Trace(visitor);
}
} // namespace blink
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