content/child/quota_dispatcher.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/child/quota_dispatcher.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/threading/thread_local.h"
  10 #include "content/child/child_thread.h"
  11 #include "content/child/quota_message_filter.h"
  12 #include "content/child/thread_safe_sender.h"
  13 #include "content/common/quota_messages.h"
  14 #include "third_party/WebKit/public/platform/WebStorageQuotaCallbacks.h"
  15 #include "third_party/WebKit/public/platform/WebStorageQuotaType.h"
  16 #include "url/gurl.h"
  17
  18 using blink::WebStorageQuotaCallbacks;
  19 using blink::WebStorageQuotaError;
  20 using blink::WebStorageQuotaType;
  21 using quota::QuotaStatusCode;
  22 using quota::StorageType;
  23
  24 namespace content {
  25
  26 static base::LazyInstance<base::ThreadLocalPointer<QuotaDispatcher> >::Leaky
  27     g_quota_dispatcher_tls = LAZY_INSTANCE_INITIALIZER;
  28
  29 namespace {
  30
  31 // QuotaDispatcher::Callback implementation for WebStorageQuotaCallbacks.
  32 class WebStorageQuotaDispatcherCallback : public QuotaDispatcher::Callback {
  33  public:
  34   explicit WebStorageQuotaDispatcherCallback(
  35       blink::WebStorageQuotaCallbacks callback)
  36       : callbacks_(callback) {}
  37   virtual ~WebStorageQuotaDispatcherCallback() {}
  38
  39   virtual void DidQueryStorageUsageAndQuota(int64 usage, int64 quota) OVERRIDE {
  40     callbacks_.didQueryStorageUsageAndQuota(usage, quota);
  41   }
  42   virtual void DidGrantStorageQuota(int64 usage, int64 granted_quota) OVERRIDE {
  43     callbacks_.didGrantStorageQuota(usage, granted_quota);
  44   }
  45   virtual void DidFail(quota::QuotaStatusCode error) OVERRIDE {
  46     callbacks_.didFail(static_cast<WebStorageQuotaError>(error));
  47   }
  48
  49  private:
  50   blink::WebStorageQuotaCallbacks callbacks_;
  51
  52   DISALLOW_COPY_AND_ASSIGN(WebStorageQuotaDispatcherCallback);
  53 };
  54
  55 int CurrentWorkerId() {
  56   return WorkerTaskRunner::Instance()->CurrentWorkerId();
  57 }
  58
  59 }  // namespace
  60
  61 QuotaDispatcher::QuotaDispatcher(ThreadSafeSender* thread_safe_sender,
  62                                  QuotaMessageFilter* quota_message_filter)
  63     : thread_safe_sender_(thread_safe_sender),
  64       quota_message_filter_(quota_message_filter) {
  65   g_quota_dispatcher_tls.Pointer()->Set(this);
  66 }
  67
  68 QuotaDispatcher::~QuotaDispatcher() {
  69   IDMap<Callback, IDMapOwnPointer>::iterator iter(&pending_quota_callbacks_);
  70   while (!iter.IsAtEnd()) {
  71     iter.GetCurrentValue()->DidFail(quota::kQuotaErrorAbort);
  72     iter.Advance();
  73   }
  74
  75   g_quota_dispatcher_tls.Pointer()->Set(NULL);
  76 }
  77
  78 QuotaDispatcher* QuotaDispatcher::ThreadSpecificInstance(
  79     ThreadSafeSender* thread_safe_sender,
  80     QuotaMessageFilter* quota_message_filter) {
  81   if (g_quota_dispatcher_tls.Pointer()->Get())
  82     return g_quota_dispatcher_tls.Pointer()->Get();
  83
  84   QuotaDispatcher* dispatcher = new QuotaDispatcher(
  85       thread_safe_sender, quota_message_filter);
  86   if (WorkerTaskRunner::Instance()->CurrentWorkerId())
  87     WorkerTaskRunner::Instance()->AddStopObserver(dispatcher);
  88   return dispatcher;
  89 }
  90
  91 void QuotaDispatcher::OnWorkerRunLoopStopped() {
  92   delete this;
  93 }
  94
  95 void QuotaDispatcher::OnMessageReceived(const IPC::Message& msg) {
  96   bool handled = true;
  97   IPC_BEGIN_MESSAGE_MAP(QuotaDispatcher, msg)
  98     IPC_MESSAGE_HANDLER(QuotaMsg_DidGrantStorageQuota,
  99                         DidGrantStorageQuota)
 100     IPC_MESSAGE_HANDLER(QuotaMsg_DidQueryStorageUsageAndQuota,
 101                         DidQueryStorageUsageAndQuota);
 102     IPC_MESSAGE_HANDLER(QuotaMsg_DidFail, DidFail);
 103     IPC_MESSAGE_UNHANDLED(handled = false)
 104   IPC_END_MESSAGE_MAP()
 105   DCHECK(handled) << "Unhandled message:" << msg.type();
 106 }
 107
 108 void QuotaDispatcher::QueryStorageUsageAndQuota(
 109     const GURL& origin_url,
 110     StorageType type,
 111     Callback* callback) {
 112   DCHECK(callback);
 113   int request_id = quota_message_filter_->GenerateRequestID(CurrentWorkerId());
 114   pending_quota_callbacks_.AddWithID(callback, request_id);
 115   thread_safe_sender_->Send(new QuotaHostMsg_QueryStorageUsageAndQuota(
 116       request_id, origin_url, type));
 117 }
 118
 119 void QuotaDispatcher::RequestStorageQuota(
 120     int render_view_id,
 121     const GURL& origin_url,
 122     StorageType type,
 123     uint64 requested_size,
 124     Callback* callback) {
 125   DCHECK(callback);
 126   DCHECK(CurrentWorkerId() == 0);
 127   int request_id = quota_message_filter_->GenerateRequestID(CurrentWorkerId());
 128   pending_quota_callbacks_.AddWithID(callback, request_id);
 129   thread_safe_sender_->Send(new QuotaHostMsg_RequestStorageQuota(
 130       render_view_id, request_id, origin_url, type, requested_size));
 131 }
 132
 133 // static
 134 QuotaDispatcher::Callback*
 135 QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(
 136     blink::WebStorageQuotaCallbacks callbacks) {
 137   return new WebStorageQuotaDispatcherCallback(callbacks);
 138 }
 139
 140 void QuotaDispatcher::DidGrantStorageQuota(
 141     int request_id,
 142     int64 current_usage,
 143     int64 granted_quota) {
 144   Callback* callback = pending_quota_callbacks_.Lookup(request_id);
 145   DCHECK(callback);
 146   callback->DidGrantStorageQuota(current_usage, granted_quota);
 147   pending_quota_callbacks_.Remove(request_id);
 148 }
 149
 150 void QuotaDispatcher::DidQueryStorageUsageAndQuota(
 151     int request_id,
 152     int64 current_usage,
 153     int64 current_quota) {
 154   Callback* callback = pending_quota_callbacks_.Lookup(request_id);
 155   DCHECK(callback);
 156   callback->DidQueryStorageUsageAndQuota(current_usage, current_quota);
 157   pending_quota_callbacks_.Remove(request_id);
 158 }
 159
 160 void QuotaDispatcher::DidFail(
 161     int request_id,
 162     QuotaStatusCode error) {
 163   Callback* callback = pending_quota_callbacks_.Lookup(request_id);
 164   DCHECK(callback);
 165   callback->DidFail(error);
 166   pending_quota_callbacks_.Remove(request_id);
 167 }
 168
 169 COMPILE_ASSERT(int(blink::WebStorageQuotaTypeTemporary) == \
 170                int(quota::kStorageTypeTemporary), mismatching_enums);
 171 COMPILE_ASSERT(int(blink::WebStorageQuotaTypePersistent) == \
 172                int(quota::kStorageTypePersistent), mismatching_enums);
 173
 174 COMPILE_ASSERT(int(blink::WebStorageQuotaErrorNotSupported) == \
 175                int(quota::kQuotaErrorNotSupported), mismatching_enums);
 176 COMPILE_ASSERT(int(blink::WebStorageQuotaErrorAbort) == \
 177                int(quota::kQuotaErrorAbort), mismatching_enums);
 178
 179 }  // namespace content