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// Copyright 2013 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_dispatcher.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string16.h"
#include "base/strings/utf_string_conversions.h"
#include "content/child/child_process.h"
#include "content/child/scoped_child_process_reference.h"
#include "content/child/thread_safe_sender.h"
#include "content/common/service_worker/embedded_worker_messages.h"
#include "content/renderer/render_thread_impl.h"
#include "content/renderer/service_worker/embedded_worker_context_client.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/platform/WebURL.h"
#include "third_party/WebKit/public/web/WebEmbeddedWorker.h"
#include "third_party/WebKit/public/web/WebEmbeddedWorkerStartData.h"
#include "webkit/child/worker_task_runner.h"
#include "webkit/common/user_agent/user_agent.h"
namespace content {
// A thin wrapper of WebEmbeddedWorker which also adds and releases process
// references automatically.
class EmbeddedWorkerDispatcher::WorkerWrapper {
public:
explicit WorkerWrapper(blink::WebEmbeddedWorker* worker) : worker_(worker) {}
~WorkerWrapper() {}
blink::WebEmbeddedWorker* worker() { return worker_.get(); }
private:
ScopedChildProcessReference process_ref_;
scoped_ptr<blink::WebEmbeddedWorker> worker_;
};
EmbeddedWorkerDispatcher::EmbeddedWorkerDispatcher() : weak_factory_(this) {}
EmbeddedWorkerDispatcher::~EmbeddedWorkerDispatcher() {}
bool EmbeddedWorkerDispatcher::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(EmbeddedWorkerDispatcher, message)
IPC_MESSAGE_HANDLER(EmbeddedWorkerMsg_StartWorker, OnStartWorker)
IPC_MESSAGE_HANDLER(EmbeddedWorkerMsg_StopWorker, OnStopWorker)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void EmbeddedWorkerDispatcher::WorkerContextDestroyed(
int embedded_worker_id) {
RenderThreadImpl::current()->thread_safe_sender()->Send(
new EmbeddedWorkerHostMsg_WorkerStopped(embedded_worker_id));
workers_.Remove(embedded_worker_id);
}
void EmbeddedWorkerDispatcher::OnStartWorker(
int embedded_worker_id,
int64 service_worker_version_id,
const GURL& script_url) {
DCHECK(!workers_.Lookup(embedded_worker_id));
scoped_ptr<WorkerWrapper> wrapper(new WorkerWrapper(
blink::WebEmbeddedWorker::create(
new EmbeddedWorkerContextClient(
embedded_worker_id,
service_worker_version_id,
script_url),
NULL)));
blink::WebEmbeddedWorkerStartData start_data;
start_data.scriptURL = script_url;
start_data.userAgent =
base::UTF8ToUTF16(webkit_glue::GetUserAgent(script_url));
start_data.startMode = blink::WebEmbeddedWorkerStartModeDontPauseOnStart;
wrapper->worker()->startWorkerContext(start_data);
workers_.AddWithID(wrapper.release(), embedded_worker_id);
}
void EmbeddedWorkerDispatcher::OnStopWorker(int embedded_worker_id) {
WorkerWrapper* wrapper = workers_.Lookup(embedded_worker_id);
if (!wrapper) {
LOG(WARNING) << "Got OnStopWorker for nonexistent worker";
return;
}
// This should eventually call WorkerContextDestroyed. (We may need to post
// a delayed task to forcibly abort the worker context if we find it
// necessary)
wrapper->worker()->terminateWorkerContext();
}
} // namespace content
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