webkit/browser/appcache/appcache_storage.cc

   1 // Copyright (c) 2009 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 "webkit/browser/appcache/appcache_storage.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/stl_util.h"
  10 #include "webkit/browser/appcache/appcache_response.h"
  11 #include "webkit/browser/appcache/appcache_service.h"
  12 #include "webkit/browser/quota/quota_client.h"
  13 #include "webkit/browser/quota/quota_manager.h"
  14
  15 namespace appcache {
  16
  17 // static
  18 const int64 AppCacheStorage::kUnitializedId = -1;
  19
  20 AppCacheStorage::AppCacheStorage(AppCacheService* service)
  21     : last_cache_id_(kUnitializedId), last_group_id_(kUnitializedId),
  22       last_response_id_(kUnitializedId), service_(service)  {
  23 }
  24
  25 AppCacheStorage::~AppCacheStorage() {
  26   STLDeleteValues(&pending_info_loads_);
  27   DCHECK(delegate_references_.empty());
  28 }
  29
  30 AppCacheStorage::DelegateReference::DelegateReference(
  31     Delegate* delegate, AppCacheStorage* storage)
  32     : delegate(delegate), storage(storage) {
  33   storage->delegate_references_.insert(
  34       DelegateReferenceMap::value_type(delegate, this));
  35 }
  36
  37 AppCacheStorage::DelegateReference::~DelegateReference() {
  38   if (delegate)
  39     storage->delegate_references_.erase(delegate);
  40 }
  41
  42 AppCacheStorage::ResponseInfoLoadTask::ResponseInfoLoadTask(
  43     const GURL& manifest_url,
  44     int64 group_id,
  45     int64 response_id,
  46     AppCacheStorage* storage)
  47     : storage_(storage),
  48       manifest_url_(manifest_url),
  49       group_id_(group_id),
  50       response_id_(response_id),
  51       info_buffer_(new HttpResponseInfoIOBuffer) {
  52   storage_->pending_info_loads_.insert(
  53       PendingResponseInfoLoads::value_type(response_id, this));
  54 }
  55
  56 AppCacheStorage::ResponseInfoLoadTask::~ResponseInfoLoadTask() {
  57 }
  58
  59 void AppCacheStorage::ResponseInfoLoadTask::StartIfNeeded() {
  60   if (reader_)
  61     return;
  62   reader_.reset(
  63       storage_->CreateResponseReader(manifest_url_, group_id_, response_id_));
  64   reader_->ReadInfo(info_buffer_.get(),
  65                     base::Bind(&ResponseInfoLoadTask::OnReadComplete,
  66                                base::Unretained(this)));
  67 }
  68
  69 void AppCacheStorage::ResponseInfoLoadTask::OnReadComplete(int result) {
  70   storage_->pending_info_loads_.erase(response_id_);
  71   scoped_refptr<AppCacheResponseInfo> info;
  72   if (result >= 0) {
  73     info = new AppCacheResponseInfo(storage_->service(), manifest_url_,
  74                                     response_id_,
  75                                     info_buffer_->http_info.release(),
  76                                     info_buffer_->response_data_size);
  77   }
  78   FOR_EACH_DELEGATE(delegates_, OnResponseInfoLoaded(info.get(), response_id_));
  79   delete this;
  80 }
  81
  82 void AppCacheStorage::LoadResponseInfo(
  83     const GURL& manifest_url, int64 group_id, int64 id, Delegate* delegate) {
  84   AppCacheResponseInfo* info = working_set_.GetResponseInfo(id);
  85   if (info) {
  86     delegate->OnResponseInfoLoaded(info, id);
  87     return;
  88   }
  89   ResponseInfoLoadTask* info_load =
  90       GetOrCreateResponseInfoLoadTask(manifest_url, group_id, id);
  91   DCHECK(manifest_url == info_load->manifest_url());
  92   DCHECK(group_id == info_load->group_id());
  93   DCHECK(id == info_load->response_id());
  94   info_load->AddDelegate(GetOrCreateDelegateReference(delegate));
  95   info_load->StartIfNeeded();
  96 }
  97
  98 void AppCacheStorage::UpdateUsageMapAndNotify(
  99     const GURL& origin, int64 new_usage) {
 100   DCHECK_GE(new_usage, 0);
 101   int64 old_usage = usage_map_[origin];
 102   if (new_usage > 0)
 103     usage_map_[origin] = new_usage;
 104   else
 105     usage_map_.erase(origin);
 106   if (new_usage != old_usage && service()->quota_manager_proxy()) {
 107     service()->quota_manager_proxy()->NotifyStorageModified(
 108         quota::QuotaClient::kAppcache,
 109         origin, quota::kStorageTypeTemporary,
 110         new_usage - old_usage);
 111   }
 112 }
 113
 114 void AppCacheStorage::ClearUsageMapAndNotify() {
 115   if (service()->quota_manager_proxy()) {
 116     for (UsageMap::const_iterator iter = usage_map_.begin();
 117          iter != usage_map_.end(); ++iter) {
 118       service()->quota_manager_proxy()->NotifyStorageModified(
 119           quota::QuotaClient::kAppcache,
 120           iter->first, quota::kStorageTypeTemporary,
 121           -(iter->second));
 122     }
 123   }
 124   usage_map_.clear();
 125 }
 126
 127 void AppCacheStorage::NotifyStorageAccessed(const GURL& origin) {
 128   if (service()->quota_manager_proxy() &&
 129       usage_map_.find(origin) != usage_map_.end())
 130     service()->quota_manager_proxy()->NotifyStorageAccessed(
 131         quota::QuotaClient::kAppcache,
 132         origin, quota::kStorageTypeTemporary);
 133 }
 134
 135 }  // namespace appcache
 136