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 quota::QuotaStatusCode;
  19 using quota::StorageType;
  20
  21 using blink::WebStorageQuotaCallbacks;
  22 using blink::WebStorageQuotaError;
  23 using blink::WebStorageQuotaType;
  24
  25 using webkit_glue::WorkerTaskRunner;
  26
  27 namespace content {
  28
  29 static base::LazyInstance<base::ThreadLocalPointer<QuotaDispatcher> >::Leaky
  30     g_quota_dispatcher_tls = LAZY_INSTANCE_INITIALIZER;
  31
  32 namespace {
  33
  34 // QuotaDispatcher::Callback implementation for WebStorageQuotaCallbacks.
  35 class WebStorageQuotaDispatcherCallback : public QuotaDispatcher::Callback {
  36  public:
  37   WebStorageQuotaDispatcherCallback(blink::WebStorageQuotaCallbacks* callback)
  38       : callbacks_(callback) {
  39     DCHECK(callbacks_);
  40   }
  41   virtual ~WebStorageQuotaDispatcherCallback() {}
  42   virtual void DidQueryStorageUsageAndQuota(int64 usage, int64 quota) OVERRIDE {
  43     callbacks_->didQueryStorageUsageAndQuota(usage, quota);
  44   }
  45   virtual void DidGrantStorageQuota(int64 granted_quota) OVERRIDE {
  46     callbacks_->didGrantStorageQuota(granted_quota);
  47   }
  48   virtual void DidFail(quota::QuotaStatusCode error) OVERRIDE {
  49     callbacks_->didFail(static_cast<WebStorageQuotaError>(error));
  50   }
  51
  52  private:
  53   // Not owned (self-destructed).
  54   blink::WebStorageQuotaCallbacks* callbacks_;
  55 };
  56
  57 int CurrentWorkerId() {
  58   return WorkerTaskRunner::Instance()->CurrentWorkerId();
  59 }
  60
  61 }  // namespace
  62
  63 QuotaDispatcher::QuotaDispatcher(ThreadSafeSender* thread_safe_sender,
  64                                  QuotaMessageFilter* quota_message_filter)
  65     : thread_safe_sender_(thread_safe_sender),
  66       quota_message_filter_(quota_message_filter) {
  67   g_quota_dispatcher_tls.Pointer()->Set(this);
  68 }
  69
  70 QuotaDispatcher::~QuotaDispatcher() {
  71   IDMap<Callback, IDMapOwnPointer>::iterator iter(&pending_quota_callbacks_);
  72   while (!iter.IsAtEnd()) {
  73     iter.GetCurrentValue()->DidFail(quota::kQuotaErrorAbort);
  74     iter.Advance();
  75   }
  76
  77   g_quota_dispatcher_tls.Pointer()->Set(NULL);
  78 }
  79
  80 QuotaDispatcher* QuotaDispatcher::ThreadSpecificInstance(
  81     ThreadSafeSender* thread_safe_sender,
  82     QuotaMessageFilter* quota_message_filter) {
  83   if (g_quota_dispatcher_tls.Pointer()->Get())
  84     return g_quota_dispatcher_tls.Pointer()->Get();
  85
  86   QuotaDispatcher* dispatcher = new QuotaDispatcher(
  87       thread_safe_sender, quota_message_filter);
  88   if (WorkerTaskRunner::Instance()->CurrentWorkerId())
  89     WorkerTaskRunner::Instance()->AddStopObserver(dispatcher);
  90   return dispatcher;
  91 }
  92
  93 void QuotaDispatcher::OnWorkerRunLoopStopped() {
  94   delete this;
  95 }
  96
  97 void QuotaDispatcher::OnMessageReceived(const IPC::Message& msg) {
  98   bool handled = true;
  99   IPC_BEGIN_MESSAGE_MAP(QuotaDispatcher, msg)
 100     IPC_MESSAGE_HANDLER(QuotaMsg_DidGrantStorageQuota,
 101                         DidGrantStorageQuota)
 102     IPC_MESSAGE_HANDLER(QuotaMsg_DidQueryStorageUsageAndQuota,
 103                         DidQueryStorageUsageAndQuota);
 104     IPC_MESSAGE_HANDLER(QuotaMsg_DidFail, DidFail);
 105     IPC_MESSAGE_UNHANDLED(handled = false)
 106   IPC_END_MESSAGE_MAP()
 107   DCHECK(handled) << "Unhandled message:" << msg.type();
 108 }
 109
 110 void QuotaDispatcher::QueryStorageUsageAndQuota(
 111     const GURL& origin_url,
 112     StorageType type,
 113     Callback* callback) {
 114   DCHECK(callback);
 115   int request_id = quota_message_filter_->GenerateRequestID(CurrentWorkerId());
 116   pending_quota_callbacks_.AddWithID(callback, request_id);
 117   thread_safe_sender_->Send(new QuotaHostMsg_QueryStorageUsageAndQuota(
 118       request_id, origin_url, type));
 119 }
 120
 121 void QuotaDispatcher::RequestStorageQuota(
 122     int render_view_id,
 123     const GURL& origin_url,
 124     StorageType type,
 125     int64 requested_size,
 126     Callback* callback) {
 127   DCHECK(callback);
 128   DCHECK(CurrentWorkerId() == 0);
 129   int request_id = quota_message_filter_->GenerateRequestID(CurrentWorkerId());
 130   pending_quota_callbacks_.AddWithID(callback, request_id);
 131   thread_safe_sender_->Send(new QuotaHostMsg_RequestStorageQuota(
 132       render_view_id, request_id, origin_url, type, requested_size));
 133 }
 134
 135 // static
 136 QuotaDispatcher::Callback*
 137 QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(
 138     blink::WebStorageQuotaCallbacks* callbacks) {
 139   return new WebStorageQuotaDispatcherCallback(callbacks);
 140 }
 141
 142 void QuotaDispatcher::DidGrantStorageQuota(
 143     int request_id,
 144     int64 granted_quota) {
 145   Callback* callback = pending_quota_callbacks_.Lookup(request_id);
 146   DCHECK(callback);
 147   callback->DidGrantStorageQuota(granted_quota);
 148   pending_quota_callbacks_.Remove(request_id);
 149 }
 150
 151 void QuotaDispatcher::DidQueryStorageUsageAndQuota(
 152     int request_id,
 153     int64 current_usage,
 154     int64 current_quota) {
 155   Callback* callback = pending_quota_callbacks_.Lookup(request_id);
 156   DCHECK(callback);
 157   callback->DidQueryStorageUsageAndQuota(current_usage, current_quota);
 158   pending_quota_callbacks_.Remove(request_id);
 159 }
 160
 161 void QuotaDispatcher::DidFail(
 162     int request_id,
 163     QuotaStatusCode error) {
 164   Callback* callback = pending_quota_callbacks_.Lookup(request_id);
 165   DCHECK(callback);
 166   callback->DidFail(error);
 167   pending_quota_callbacks_.Remove(request_id);
 168 }
 169
 170 COMPILE_ASSERT(int(blink::WebStorageQuotaTypeTemporary) == \
 171                int(quota::kStorageTypeTemporary), mismatching_enums);
 172 COMPILE_ASSERT(int(blink::WebStorageQuotaTypePersistent) == \
 173                int(quota::kStorageTypePersistent), mismatching_enums);
 174
 175 COMPILE_ASSERT(int(blink::WebStorageQuotaErrorNotSupported) == \
 176                int(quota::kQuotaErrorNotSupported), mismatching_enums);
 177 COMPILE_ASSERT(int(blink::WebStorageQuotaErrorAbort) == \
 178                int(quota::kQuotaErrorAbort), mismatching_enums);
 179
 180 }  // namespace content