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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/child/service_worker/service_worker_dispatcher.h"
#include "base/lazy_instance.h"
#include "base/threading/thread_local.h"
#include "content/child/service_worker/web_service_worker_impl.h"
#include "content/child/thread_safe_sender.h"
#include "content/common/service_worker/service_worker_messages.h"
#include "third_party/WebKit/public/web/WebSecurityOrigin.h"
using blink::WebServiceWorkerError;
using blink::WebServiceWorkerProvider;
using base::ThreadLocalPointer;
namespace content {
namespace {
base::LazyInstance<ThreadLocalPointer<ServiceWorkerDispatcher> >::Leaky
g_dispatcher_tls = LAZY_INSTANCE_INITIALIZER;
ServiceWorkerDispatcher* const kHasBeenDeleted =
reinterpret_cast<ServiceWorkerDispatcher*>(0x1);
int CurrentWorkerId() {
return WorkerTaskRunner::Instance()->CurrentWorkerId();
}
} // namespace
ServiceWorkerDispatcher::ServiceWorkerDispatcher(
ThreadSafeSender* thread_safe_sender)
: thread_safe_sender_(thread_safe_sender) {
g_dispatcher_tls.Pointer()->Set(this);
}
ServiceWorkerDispatcher::~ServiceWorkerDispatcher() {
g_dispatcher_tls.Pointer()->Set(kHasBeenDeleted);
}
void ServiceWorkerDispatcher::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ServiceWorkerDispatcher, msg)
IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerRegistered, OnRegistered)
IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerUnregistered,
OnUnregistered)
IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerRegistrationError,
OnRegistrationError)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
DCHECK(handled) << "Unhandled message:" << msg.type();
}
bool ServiceWorkerDispatcher::Send(IPC::Message* msg) {
return thread_safe_sender_->Send(msg);
}
void ServiceWorkerDispatcher::RegisterServiceWorker(
int provider_id,
const GURL& pattern,
const GURL& script_url,
WebServiceWorkerProvider::WebServiceWorkerCallbacks* callbacks) {
DCHECK(callbacks);
int request_id = pending_callbacks_.Add(callbacks);
thread_safe_sender_->Send(new ServiceWorkerHostMsg_RegisterServiceWorker(
CurrentWorkerId(), request_id, provider_id, pattern, script_url));
}
void ServiceWorkerDispatcher::UnregisterServiceWorker(
int provider_id,
const GURL& pattern,
WebServiceWorkerProvider::WebServiceWorkerCallbacks* callbacks) {
DCHECK(callbacks);
int request_id = pending_callbacks_.Add(callbacks);
thread_safe_sender_->Send(new ServiceWorkerHostMsg_UnregisterServiceWorker(
CurrentWorkerId(), request_id, provider_id, pattern));
}
void ServiceWorkerDispatcher::AddScriptClient(
int provider_id,
blink::WebServiceWorkerProviderClient* client) {
DCHECK(client);
DCHECK(!ContainsKey(script_clients_, provider_id));
script_clients_[provider_id] = client;
thread_safe_sender_->Send(new ServiceWorkerHostMsg_AddScriptClient(
CurrentWorkerId(), provider_id));
}
void ServiceWorkerDispatcher::RemoveScriptClient(int provider_id) {
// This could be possibly called multiple times to ensure termination.
if (ContainsKey(script_clients_, provider_id)) {
script_clients_.erase(provider_id);
thread_safe_sender_->Send(new ServiceWorkerHostMsg_RemoveScriptClient(
CurrentWorkerId(), provider_id));
}
}
ServiceWorkerDispatcher* ServiceWorkerDispatcher::ThreadSpecificInstance(
ThreadSafeSender* thread_safe_sender) {
if (g_dispatcher_tls.Pointer()->Get() == kHasBeenDeleted) {
NOTREACHED() << "Re-instantiating TLS ServiceWorkerDispatcher.";
g_dispatcher_tls.Pointer()->Set(NULL);
}
if (g_dispatcher_tls.Pointer()->Get())
return g_dispatcher_tls.Pointer()->Get();
ServiceWorkerDispatcher* dispatcher =
new ServiceWorkerDispatcher(thread_safe_sender);
if (WorkerTaskRunner::Instance()->CurrentWorkerId())
WorkerTaskRunner::Instance()->AddStopObserver(dispatcher);
return dispatcher;
}
void ServiceWorkerDispatcher::OnRegistered(int thread_id,
int request_id,
int handle_id) {
WebServiceWorkerProvider::WebServiceWorkerCallbacks* callbacks =
pending_callbacks_.Lookup(request_id);
DCHECK(callbacks);
if (!callbacks)
return;
// the browser has to generate the registration_id so the same
// worker can be called from different renderer contexts. However,
// the impl object doesn't have to be the same instance across calls
// unless we require the DOM objects to be identical when there's a
// duplicate registration. So for now we mint a new object each
// time.
scoped_ptr<WebServiceWorkerImpl> worker(
new WebServiceWorkerImpl(handle_id, thread_safe_sender_));
callbacks->onSuccess(worker.release());
pending_callbacks_.Remove(request_id);
}
void ServiceWorkerDispatcher::OnUnregistered(
int thread_id,
int request_id) {
WebServiceWorkerProvider::WebServiceWorkerCallbacks* callbacks =
pending_callbacks_.Lookup(request_id);
DCHECK(callbacks);
if (!callbacks)
return;
callbacks->onSuccess(NULL);
pending_callbacks_.Remove(request_id);
}
void ServiceWorkerDispatcher::OnRegistrationError(
int thread_id,
int request_id,
WebServiceWorkerError::ErrorType error_type,
const base::string16& message) {
WebServiceWorkerProvider::WebServiceWorkerCallbacks* callbacks =
pending_callbacks_.Lookup(request_id);
DCHECK(callbacks);
if (!callbacks)
return;
scoped_ptr<WebServiceWorkerError> error(
new WebServiceWorkerError(error_type, message));
callbacks->onError(error.release());
pending_callbacks_.Remove(request_id);
}
void ServiceWorkerDispatcher::OnWorkerRunLoopStopped() { delete this; }
} // namespace content
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