ServiceWorker: Mojofication of EWInstance::StopWorker

content/renderer/service_worker/embedded_worker_instance_client_impl.cc

 // Copyright (c) 2016 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 "content/renderer/service_worker/embedded_worker_instance_client_impl.h"
 
 #include <memory>
 
 #include "base/strings/utf_string_conversions.h"
 #include "content/child/scoped_child_process_reference.h"
 #include "content/common/service_worker/embedded_worker_messages.h"
 #include "content/public/common/content_client.h"
 #include "content/renderer/service_worker/embedded_worker_devtools_agent.h"
 #include "content/renderer/service_worker/service_worker_context_client.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "third_party/WebKit/public/web/WebEmbeddedWorker.h"
 #include "third_party/WebKit/public/web/WebEmbeddedWorkerStartData.h"
 
 namespace content {
 
-namespace {
-
-void OnError() {
-  // TODO(shimazu): Implement here
-  NOTIMPLEMENTED();
-}
-
-}  // namespace
-
 // static
 void EmbeddedWorkerInstanceClientImpl::Create(
     EmbeddedWorkerDispatcher* dispatcher,
     mojo::InterfaceRequest<mojom::EmbeddedWorkerInstanceClient> request) {
-  auto binding = mojo::MakeStrongBinding(
-      base::MakeUnique<EmbeddedWorkerInstanceClientImpl>(dispatcher),
-      std::move(request));
-  binding->set_connection_error_handler(base::Bind(&OnError));
+  // This won't be leaked because the lifetime will be managed internally.
+  new EmbeddedWorkerInstanceClientImpl(dispatcher, std::move(request));
+}
+
+void EmbeddedWorkerInstanceClientImpl::StopWorkerCompleted() {
+  DCHECK(embedded_worker_id_);
+  DCHECK(stop_callback_);
+  dispatcher_->UnregisterWorker(embedded_worker_id_.value());
+  embedded_worker_id_.reset();
+  stop_callback_.Run();
+  TRACE_EVENT0("ServiceWorker",
+               "EmbeddedWorkerInstanceClientImpl::StopWorkerCompleted");
+  stop_callback_.Reset();
 }
 
 void EmbeddedWorkerInstanceClientImpl::StartWorker(
     const EmbeddedWorkerStartParams& params) {
   TRACE_EVENT0("ServiceWorker",
                "EmbeddedWorkerInstanceClientImpl::StartWorker");
+  embedded_worker_id_ = params.embedded_worker_id;
 
   std::unique_ptr<EmbeddedWorkerDispatcher::WorkerWrapper> wrapper =
       dispatcher_->StartWorkerContext(
-          params,
-          base::MakeUnique<ServiceWorkerContextClient>(
-              params.embedded_worker_id, params.service_worker_version_id,
-              params.scope, params.script_url,
-              params.worker_devtools_agent_route_id));
+          params, base::MakeUnique<ServiceWorkerContextClient>(
+                      params.embedded_worker_id,
+                      params.service_worker_version_id, params.scope,
+                      params.script_url, params.worker_devtools_agent_route_id,
+                      std::move(temporal_self_)));
   wrapper_ = wrapper.get();
   dispatcher_->RegisterWorker(params.embedded_worker_id, std::move(wrapper));
 }
 
+void EmbeddedWorkerInstanceClientImpl::StopWorker(
+    const StopWorkerCallback& callback) {
+  DCHECK(embedded_worker_id_);
+  DCHECK(!stop_callback_);
+  TRACE_EVENT0("ServiceWorker", "EmbeddedWorkerInstanceClientImpl::StopWorker");
+  stop_callback_ = std::move(callback);
+  dispatcher_->RecordStopWorkerTimer(embedded_worker_id_.value());
+  wrapper_->worker()->terminateWorkerContext();
+}
+
 EmbeddedWorkerInstanceClientImpl::EmbeddedWorkerInstanceClientImpl(
-    EmbeddedWorkerDispatcher* dispatcher)
-    : dispatcher_(dispatcher) {}
+    EmbeddedWorkerDispatcher* dispatcher,
+    mojo::InterfaceRequest<mojom::EmbeddedWorkerInstanceClient> request)
+    : dispatcher_(dispatcher),
+      binding_(this, std::move(request)),
+      temporal_self_(std::unique_ptr<EmbeddedWorkerInstanceClientImpl>(this)) {
+  binding_.set_connection_error_handler(base::Bind(
+      &EmbeddedWorkerInstanceClientImpl::OnError, base::Unretained(this)));
+}
 
 EmbeddedWorkerInstanceClientImpl::~EmbeddedWorkerInstanceClientImpl() {}
 
+void EmbeddedWorkerInstanceClientImpl::OnError() {
+  // Removes myself if it's owned by myself.
+  temporal_self_.reset();
+}
+
 }  // namespace content