1bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch// Copyright 2013 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#include "content/browser/dom_storage/dom_storage_area.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/bind.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/location.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/metrics/histogram.h" 11868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/utf_string_conversions.h" 12eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/time/time.h" 13bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#include "content/browser/dom_storage/dom_storage_namespace.h" 14bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#include "content/browser/dom_storage/dom_storage_task_runner.h" 15bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#include "content/browser/dom_storage/local_storage_database_adapter.h" 16bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#include "content/browser/dom_storage/session_storage_database.h" 17bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#include "content/browser/dom_storage/session_storage_database_adapter.h" 18bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#include "content/common/dom_storage/dom_storage_map.h" 19bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch#include "content/common/dom_storage/dom_storage_types.h" 201320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "storage/browser/database/database_util.h" 211320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "storage/common/database/database_identifier.h" 221320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "storage/common/fileapi/file_system_util.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2403b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)using storage::DatabaseUtil; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 26bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochnamespace content { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const int kCommitTimerSeconds = 1; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben MurdochDOMStorageArea::CommitBatch::CommitBatch() 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : clear_all_first(false) { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 33bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben MurdochDOMStorageArea::CommitBatch::~CommitBatch() {} 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 37bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochconst base::FilePath::CharType DOMStorageArea::kDatabaseFileExtension[] = 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FILE_PATH_LITERAL(".localstorage"); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 41bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochbase::FilePath DOMStorageArea::DatabaseFileNameFromOrigin(const GURL& origin) { 4203b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) std::string filename = storage::GetIdentifierFromOrigin(origin); 432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // There is no base::FilePath.AppendExtension() method, so start with just the 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // extension as the filename, and then InsertBeforeExtension the desired 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // name. 462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return base::FilePath().Append(kDatabaseFileExtension). 477d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) InsertBeforeExtensionASCII(filename); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 51bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben MurdochGURL DOMStorageArea::OriginFromDatabaseFileName(const base::FilePath& name) { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(name.MatchesExtension(kDatabaseFileExtension)); 537d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) std::string origin_id = 547d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) name.BaseName().RemoveExtension().MaybeAsASCII(); 5503b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) return storage::GetOriginFromIdentifier(origin_id); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 58bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben MurdochDOMStorageArea::DOMStorageArea( 59bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch const GURL& origin, const base::FilePath& directory, 60bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch DOMStorageTaskRunner* task_runner) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : namespace_id_(kLocalStorageNamespaceId), origin_(origin), 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) directory_(directory), 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) task_runner_(task_runner), 64bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch map_(new DOMStorageMap(kPerStorageAreaQuota + 65bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch kPerStorageAreaOverQuotaAllowance)), 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_initial_import_done_(true), 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_shutdown_(false), 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batches_in_flight_(0) { 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!directory.empty()) { 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::FilePath path = directory.Append(DatabaseFileNameFromOrigin(origin_)); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backing_.reset(new LocalStorageDatabaseAdapter(path)); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_initial_import_done_ = false; 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 76bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben MurdochDOMStorageArea::DOMStorageArea( 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64 namespace_id, 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& persistent_namespace_id, 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const GURL& origin, 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SessionStorageDatabase* session_storage_backing, 81bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch DOMStorageTaskRunner* task_runner) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : namespace_id_(namespace_id), 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) persistent_namespace_id_(persistent_namespace_id), 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) origin_(origin), 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) task_runner_(task_runner), 86bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch map_(new DOMStorageMap(kPerStorageAreaQuota + 87bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch kPerStorageAreaOverQuotaAllowance)), 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) session_storage_backing_(session_storage_backing), 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_initial_import_done_(true), 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_shutdown_(false), 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batches_in_flight_(0) { 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(namespace_id != kLocalStorageNamespaceId); 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (session_storage_backing) { 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backing_.reset(new SessionStorageDatabaseAdapter( 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) session_storage_backing, persistent_namespace_id, origin)); 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_initial_import_done_ = false; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 100bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben MurdochDOMStorageArea::~DOMStorageArea() { 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 103bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::ExtractValues(DOMStorageValuesMap* map) { 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InitialImportIfNeeded(); 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) map_->ExtractValues(map); 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 110bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochunsigned DOMStorageArea::Length() { 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InitialImportIfNeeded(); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return map_->Length(); 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 117bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochbase::NullableString16 DOMStorageArea::Key(unsigned index) { 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 1197d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) return base::NullableString16(); 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InitialImportIfNeeded(); 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return map_->Key(index); 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 124bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochbase::NullableString16 DOMStorageArea::GetItem(const base::string16& key) { 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 1267d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) return base::NullableString16(); 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InitialImportIfNeeded(); 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return map_->GetItem(key); 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 131bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochbool DOMStorageArea::SetItem(const base::string16& key, 132c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) const base::string16& value, 1337d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) base::NullableString16* old_value) { 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InitialImportIfNeeded(); 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!map_->HasOneRef()) 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) map_ = map_->DeepCopy(); 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = map_->SetItem(key, value, old_value); 140b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (success && backing_) { 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CommitBatch* commit_batch = CreateCommitBatchIfNeeded(); 1427d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) commit_batch->changed_values[key] = base::NullableString16(value, false); 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return success; 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 147bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochbool DOMStorageArea::RemoveItem(const base::string16& key, 148c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::string16* old_value) { 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InitialImportIfNeeded(); 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!map_->HasOneRef()) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) map_ = map_->DeepCopy(); 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = map_->RemoveItem(key, old_value); 155b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (success && backing_) { 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CommitBatch* commit_batch = CreateCommitBatchIfNeeded(); 1577d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) commit_batch->changed_values[key] = base::NullableString16(); 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return success; 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 162bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochbool DOMStorageArea::Clear() { 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) InitialImportIfNeeded(); 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (map_->Length() == 0) 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 169bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch map_ = new DOMStorageMap(kPerStorageAreaQuota + 170bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch kPerStorageAreaOverQuotaAllowance); 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 172b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (backing_) { 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CommitBatch* commit_batch = CreateCommitBatchIfNeeded(); 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch->clear_all_first = true; 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch->changed_values.clear(); 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 181bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::FastClear() { 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(marja): Unify clearing localStorage and sessionStorage. The problem is 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to make the following 3 to work together: 1) FastClear, 2) PurgeMemory and 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 3) not creating events when clearing an empty area. 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 188bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch map_ = new DOMStorageMap(kPerStorageAreaQuota + 189bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch kPerStorageAreaOverQuotaAllowance); 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This ensures no import will happen while we're waiting to clear the data 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // from the database. This mechanism fails if PurgeMemory is called. 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_initial_import_done_ = true; 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 194b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (backing_) { 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CommitBatch* commit_batch = CreateCommitBatchIfNeeded(); 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch->clear_all_first = true; 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch->changed_values.clear(); 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 201bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben MurdochDOMStorageArea* DOMStorageArea::ShallowCopy( 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64 destination_namespace_id, 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& destination_persistent_namespace_id) { 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_NE(kLocalStorageNamespaceId, namespace_id_); 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_NE(kLocalStorageNamespaceId, destination_namespace_id); 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 207bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch DOMStorageArea* copy = new DOMStorageArea( 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) destination_namespace_id, destination_persistent_namespace_id, origin_, 209868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) session_storage_backing_.get(), task_runner_.get()); 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) copy->map_ = map_; 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) copy->is_shutdown_ = is_shutdown_; 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) copy->is_initial_import_done_ = true; 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // All the uncommitted changes to this area need to happen before the actual 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // shallow copy is made (scheduled by the upper layer). Another OnCommitTimer 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // call might be in the event queue at this point, but it's handled gracefully 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // when it fires. 218b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (commit_batch_) 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnCommitTimer(); 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return copy; 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 223bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochbool DOMStorageArea::HasUncommittedChanges() const { 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!is_shutdown_); 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return commit_batch_.get() || commit_batches_in_flight_; 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 228bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::DeleteOrigin() { 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!is_shutdown_); 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This function shouldn't be called for sessionStorage. 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!session_storage_backing_.get()); 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HasUncommittedChanges()) { 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(michaeln): This logically deletes the data immediately, 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and in a matter of a second, deletes the rows from the backing 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // database file, but the file itself will linger until shutdown 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // or purge time. Ideally, this should delete the file more 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // quickly. 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Clear(); 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 241bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch map_ = new DOMStorageMap(kPerStorageAreaQuota + 242bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch kPerStorageAreaOverQuotaAllowance); 243b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (backing_) { 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_initial_import_done_ = false; 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backing_->Reset(); 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backing_->DeleteFiles(); 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 250bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::PurgeMemory() { 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!is_shutdown_); 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Purging sessionStorage is not supported; it won't work with FastClear. 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!session_storage_backing_.get()); 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!is_initial_import_done_ || // We're not using any memory. 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) !backing_.get() || // We can't purge anything. 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HasUncommittedChanges()) // We leave things alone with changes pending. 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Drop the in memory cache, we'll reload when needed. 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_initial_import_done_ = false; 261bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch map_ = new DOMStorageMap(kPerStorageAreaQuota + 262bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch kPerStorageAreaOverQuotaAllowance); 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Recreate the database object, this frees up the open sqlite connection 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and its page cache. 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backing_->Reset(); 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 269bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::Shutdown() { 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!is_shutdown_); 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_shutdown_ = true; 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) map_ = NULL; 273b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (!backing_) 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = task_runner_->PostShutdownBlockingTask( 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 278bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch DOMStorageTaskRunner::COMMIT_SEQUENCE, 279bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch base::Bind(&DOMStorageArea::ShutdownInCommitSequence, this)); 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(success); 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 283bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::InitialImportIfNeeded() { 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_initial_import_done_) 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(backing_.get()); 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::TimeTicks before = base::TimeTicks::Now(); 290bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch DOMStorageValuesMap initial_values; 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backing_->ReadAllValues(&initial_values); 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) map_->SwapValues(&initial_values); 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is_initial_import_done_ = true; 2942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::TimeDelta time_to_import = base::TimeTicks::Now() - before; 2952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_TIMES("LocalStorage.BrowserTimeToPrimeLocalStorage", 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) time_to_import); 2972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t local_storage_size_kb = map_->bytes_used() / 1024; 2992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Track localStorage size, from 0-6MB. Note that the maximum size should be 3002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // 5MB, but we add some slop since we want to make sure the max size is always 3012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // above what we see in practice, since histograms can't change. 3022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_CUSTOM_COUNTS("LocalStorage.BrowserLocalStorageSizeInKB", 3032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) local_storage_size_kb, 3042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 0, 6 * 1024, 50); 3052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (local_storage_size_kb < 100) { 3062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_TIMES( 3072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) "LocalStorage.BrowserTimeToPrimeLocalStorageUnder100KB", 3082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) time_to_import); 3092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else if (local_storage_size_kb < 1000) { 3102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_TIMES( 3112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) "LocalStorage.BrowserTimeToPrimeLocalStorage100KBTo1MB", 3122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) time_to_import); 3132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else { 3142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) UMA_HISTOGRAM_TIMES( 3152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) "LocalStorage.BrowserTimeToPrimeLocalStorage1MBTo5MB", 3162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) time_to_import); 3172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 320bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben MurdochDOMStorageArea::CommitBatch* DOMStorageArea::CreateCommitBatchIfNeeded() { 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!is_shutdown_); 322b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (!commit_batch_) { 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch_.reset(new CommitBatch()); 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Start a timer to commit any changes that accrue in the batch, but only if 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // no commits are currently in flight. In that case the timer will be 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // started after the commits have happened. 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!commit_batches_in_flight_) { 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) task_runner_->PostDelayedTask( 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 331bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch base::Bind(&DOMStorageArea::OnCommitTimer, this), 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta::FromSeconds(kCommitTimerSeconds)); 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return commit_batch_.get(); 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 338bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::OnCommitTimer() { 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(backing_.get()); 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // It's possible that there is nothing to commit, since a shallow copy occured 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // before the timer fired. 346b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (!commit_batch_) 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This method executes on the primary sequence, we schedule 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // a task for immediate execution on the commit sequence. 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(task_runner_->IsRunningOnPrimarySequence()); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = task_runner_->PostShutdownBlockingTask( 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 354bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch DOMStorageTaskRunner::COMMIT_SEQUENCE, 355bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch base::Bind(&DOMStorageArea::CommitChanges, this, 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Owned(commit_batch_.release()))); 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++commit_batches_in_flight_; 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(success); 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 361bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::CommitChanges(const CommitBatch* commit_batch) { 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This method executes on the commit sequence. 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(task_runner_->IsRunningOnCommitSequence()); 3645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) backing_->CommitChanges(commit_batch->clear_all_first, 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch->changed_values); 3665d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // TODO(michaeln): what if CommitChanges returns false (e.g., we're trying to 3675d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // commit to a DB which is in an inconsistent state?) 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) task_runner_->PostTask( 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 370bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch base::Bind(&DOMStorageArea::OnCommitComplete, this)); 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 373bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::OnCommitComplete() { 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We're back on the primary sequence in this method. 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(task_runner_->IsRunningOnPrimarySequence()); 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) --commit_batches_in_flight_; 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (is_shutdown_) 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (commit_batch_.get() && !commit_batches_in_flight_) { 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // More changes have accrued, restart the timer. 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) task_runner_->PostDelayedTask( 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 383bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch base::Bind(&DOMStorageArea::OnCommitTimer, this), 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta::FromSeconds(kCommitTimerSeconds)); 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 388bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdochvoid DOMStorageArea::ShutdownInCommitSequence() { 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This method executes on the commit sequence. 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(task_runner_->IsRunningOnCommitSequence()); 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(backing_.get()); 392b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (commit_batch_) { 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Commit any changes that accrued prior to the timer firing. 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool success = backing_->CommitChanges( 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch_->clear_all_first, 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch_->changed_values); 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(success); 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) commit_batch_.reset(); 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) backing_.reset(); 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) session_storage_backing_ = NULL; 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 404bb1529ce867d8845a77ec7cdf3e3003ef1771a40Ben Murdoch} // namespace content 405