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// Copyright (c) 2011 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/quota_dispatcher.h"
#include "base/basictypes.h"
#include "base/lazy_instance.h"
#include "base/threading/thread_local.h"
#include "content/child/child_thread.h"
#include "content/child/quota_message_filter.h"
#include "content/child/thread_safe_sender.h"
#include "content/common/quota_messages.h"
#include "third_party/WebKit/public/platform/WebStorageQuotaCallbacks.h"
#include "third_party/WebKit/public/platform/WebStorageQuotaType.h"
#include "url/gurl.h"
using quota::QuotaStatusCode;
using quota::StorageType;
using blink::WebStorageQuotaCallbacks;
using blink::WebStorageQuotaError;
using blink::WebStorageQuotaType;
using webkit_glue::WorkerTaskRunner;
namespace content {
static base::LazyInstance<base::ThreadLocalPointer<QuotaDispatcher> >::Leaky
g_quota_dispatcher_tls = LAZY_INSTANCE_INITIALIZER;
namespace {
// QuotaDispatcher::Callback implementation for WebStorageQuotaCallbacks.
class WebStorageQuotaDispatcherCallback : public QuotaDispatcher::Callback {
public:
WebStorageQuotaDispatcherCallback(blink::WebStorageQuotaCallbacks* callback)
: callbacks_(callback) {
DCHECK(callbacks_);
}
virtual ~WebStorageQuotaDispatcherCallback() {}
virtual void DidQueryStorageUsageAndQuota(int64 usage, int64 quota) OVERRIDE {
callbacks_->didQueryStorageUsageAndQuota(usage, quota);
}
virtual void DidGrantStorageQuota(int64 granted_quota) OVERRIDE {
callbacks_->didGrantStorageQuota(granted_quota);
}
virtual void DidFail(quota::QuotaStatusCode error) OVERRIDE {
callbacks_->didFail(static_cast<WebStorageQuotaError>(error));
}
private:
// Not owned (self-destructed).
blink::WebStorageQuotaCallbacks* callbacks_;
};
int CurrentWorkerId() {
return WorkerTaskRunner::Instance()->CurrentWorkerId();
}
} // namespace
QuotaDispatcher::QuotaDispatcher(ThreadSafeSender* thread_safe_sender,
QuotaMessageFilter* quota_message_filter)
: thread_safe_sender_(thread_safe_sender),
quota_message_filter_(quota_message_filter) {
g_quota_dispatcher_tls.Pointer()->Set(this);
}
QuotaDispatcher::~QuotaDispatcher() {
IDMap<Callback, IDMapOwnPointer>::iterator iter(&pending_quota_callbacks_);
while (!iter.IsAtEnd()) {
iter.GetCurrentValue()->DidFail(quota::kQuotaErrorAbort);
iter.Advance();
}
g_quota_dispatcher_tls.Pointer()->Set(NULL);
}
QuotaDispatcher* QuotaDispatcher::ThreadSpecificInstance(
ThreadSafeSender* thread_safe_sender,
QuotaMessageFilter* quota_message_filter) {
if (g_quota_dispatcher_tls.Pointer()->Get())
return g_quota_dispatcher_tls.Pointer()->Get();
QuotaDispatcher* dispatcher = new QuotaDispatcher(
thread_safe_sender, quota_message_filter);
if (WorkerTaskRunner::Instance()->CurrentWorkerId())
WorkerTaskRunner::Instance()->AddStopObserver(dispatcher);
return dispatcher;
}
void QuotaDispatcher::OnWorkerRunLoopStopped() {
delete this;
}
void QuotaDispatcher::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(QuotaDispatcher, msg)
IPC_MESSAGE_HANDLER(QuotaMsg_DidGrantStorageQuota,
DidGrantStorageQuota)
IPC_MESSAGE_HANDLER(QuotaMsg_DidQueryStorageUsageAndQuota,
DidQueryStorageUsageAndQuota);
IPC_MESSAGE_HANDLER(QuotaMsg_DidFail, DidFail);
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
DCHECK(handled) << "Unhandled message:" << msg.type();
}
void QuotaDispatcher::QueryStorageUsageAndQuota(
const GURL& origin_url,
StorageType type,
Callback* callback) {
DCHECK(callback);
int request_id = quota_message_filter_->GenerateRequestID(CurrentWorkerId());
pending_quota_callbacks_.AddWithID(callback, request_id);
thread_safe_sender_->Send(new QuotaHostMsg_QueryStorageUsageAndQuota(
request_id, origin_url, type));
}
void QuotaDispatcher::RequestStorageQuota(
int render_view_id,
const GURL& origin_url,
StorageType type,
int64 requested_size,
Callback* callback) {
DCHECK(callback);
DCHECK(CurrentWorkerId() == 0);
int request_id = quota_message_filter_->GenerateRequestID(CurrentWorkerId());
pending_quota_callbacks_.AddWithID(callback, request_id);
thread_safe_sender_->Send(new QuotaHostMsg_RequestStorageQuota(
render_view_id, request_id, origin_url, type, requested_size));
}
// static
QuotaDispatcher::Callback*
QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(
blink::WebStorageQuotaCallbacks* callbacks) {
return new WebStorageQuotaDispatcherCallback(callbacks);
}
void QuotaDispatcher::DidGrantStorageQuota(
int request_id,
int64 granted_quota) {
Callback* callback = pending_quota_callbacks_.Lookup(request_id);
DCHECK(callback);
callback->DidGrantStorageQuota(granted_quota);
pending_quota_callbacks_.Remove(request_id);
}
void QuotaDispatcher::DidQueryStorageUsageAndQuota(
int request_id,
int64 current_usage,
int64 current_quota) {
Callback* callback = pending_quota_callbacks_.Lookup(request_id);
DCHECK(callback);
callback->DidQueryStorageUsageAndQuota(current_usage, current_quota);
pending_quota_callbacks_.Remove(request_id);
}
void QuotaDispatcher::DidFail(
int request_id,
QuotaStatusCode error) {
Callback* callback = pending_quota_callbacks_.Lookup(request_id);
DCHECK(callback);
callback->DidFail(error);
pending_quota_callbacks_.Remove(request_id);
}
COMPILE_ASSERT(int(blink::WebStorageQuotaTypeTemporary) == \
int(quota::kStorageTypeTemporary), mismatching_enums);
COMPILE_ASSERT(int(blink::WebStorageQuotaTypePersistent) == \
int(quota::kStorageTypePersistent), mismatching_enums);
COMPILE_ASSERT(int(blink::WebStorageQuotaErrorNotSupported) == \
int(quota::kQuotaErrorNotSupported), mismatching_enums);
COMPILE_ASSERT(int(blink::WebStorageQuotaErrorAbort) == \
int(quota::kQuotaErrorAbort), mismatching_enums);
} // namespace content
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