| // Copyright 2014 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 "components/sync_sessions/sessions_sync_manager.h" |
| |
| #include <algorithm> |
| #include <utility> |
| |
| #include "base/memory/ptr_util.h" |
| #include "base/metrics/field_trial.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "build/build_config.h" |
| #include "components/sync/base/hash_util.h" |
| #include "components/sync/device_info/local_device_info_provider.h" |
| #include "components/sync/model/sync_error.h" |
| #include "components/sync/model/sync_error_factory.h" |
| #include "components/sync/model/sync_merge_result.h" |
| #include "components/sync/model/time.h" |
| #include "components/sync_sessions/sync_sessions_client.h" |
| #include "components/sync_sessions/synced_tab_delegate.h" |
| #include "components/sync_sessions/synced_window_delegate.h" |
| #include "components/sync_sessions/synced_window_delegates_getter.h" |
| #include "components/variations/variations_associated_data.h" |
| |
| using sessions::SerializedNavigationEntry; |
| using syncer::DeviceInfo; |
| using syncer::LocalDeviceInfoProvider; |
| using syncer::SyncChange; |
| using syncer::SyncData; |
| |
| namespace sync_sessions { |
| |
| namespace { |
| |
| // Maximum number of favicons to sync. |
| // TODO(zea): pull this from the server. |
| const int kMaxSyncFavicons = 200; |
| |
| // The maximum number of navigations in each direction we care to sync. |
| const int kMaxSyncNavigationCount = 6; |
| |
| // The URL at which the set of synced tabs is displayed. We treat it differently |
| // from all other URL's as accessing it triggers a sync refresh of Sessions. |
| const char kNTPOpenTabSyncURL[] = "chrome://newtab/#open_tabs"; |
| |
| // Default number of days without activity after which a session is considered |
| // stale and becomes a candidate for garbage collection. |
| const int kDefaultStaleSessionThresholdDays = 14; // 2 weeks. |
| |
| // Comparator function for use with std::sort that will sort tabs by |
| // descending timestamp (i.e., most recent first). |
| bool TabsRecencyComparator(const sessions::SessionTab* t1, |
| const sessions::SessionTab* t2) { |
| return t1->timestamp > t2->timestamp; |
| } |
| |
| // Comparator function for use with std::sort that will sort sessions by |
| // descending modified_time (i.e., most recent first). |
| bool SessionsRecencyComparator(const SyncedSession* s1, |
| const SyncedSession* s2) { |
| return s1->modified_time > s2->modified_time; |
| } |
| |
| std::string TagFromSpecifics(const sync_pb::SessionSpecifics& specifics) { |
| if (specifics.has_header()) { |
| return specifics.session_tag(); |
| } else if (specifics.has_tab()) { |
| return TabNodePool::TabIdToTag(specifics.session_tag(), |
| specifics.tab_node_id()); |
| } else { |
| return std::string(); |
| } |
| } |
| |
| } // namespace |
| |
| // |local_device| is owned by ProfileSyncService, its lifetime exceeds |
| // lifetime of SessionSyncManager. |
| SessionsSyncManager::SessionsSyncManager( |
| sync_sessions::SyncSessionsClient* sessions_client, |
| syncer::SyncPrefs* sync_prefs, |
| LocalDeviceInfoProvider* local_device, |
| std::unique_ptr<LocalSessionEventRouter> router, |
| const base::Closure& sessions_updated_callback, |
| const base::Closure& datatype_refresh_callback) |
| : sessions_client_(sessions_client), |
| session_tracker_(sessions_client), |
| favicon_cache_(sessions_client->GetFaviconService(), |
| sessions_client->GetHistoryService(), |
| kMaxSyncFavicons), |
| local_tab_pool_out_of_sync_(true), |
| sync_prefs_(sync_prefs), |
| local_device_(local_device), |
| local_session_header_node_id_(TabNodePool::kInvalidTabNodeID), |
| stale_session_threshold_days_(kDefaultStaleSessionThresholdDays), |
| local_event_router_(std::move(router)), |
| page_revisit_broadcaster_(this, sessions_client), |
| sessions_updated_callback_(sessions_updated_callback), |
| datatype_refresh_callback_(datatype_refresh_callback) {} |
| |
| SessionsSyncManager::~SessionsSyncManager() {} |
| |
| // Returns the GUID-based string that should be used for |
| // |SessionsSyncManager::current_machine_tag_|. |
| static std::string BuildMachineTag(const std::string& cache_guid) { |
| std::string machine_tag = "session_sync"; |
| machine_tag.append(cache_guid); |
| return machine_tag; |
| } |
| |
| syncer::SyncMergeResult SessionsSyncManager::MergeDataAndStartSyncing( |
| syncer::ModelType type, |
| const syncer::SyncDataList& initial_sync_data, |
| std::unique_ptr<syncer::SyncChangeProcessor> sync_processor, |
| std::unique_ptr<syncer::SyncErrorFactory> error_handler) { |
| syncer::SyncMergeResult merge_result(type); |
| DCHECK(session_tracker_.Empty()); |
| DCHECK_EQ(0U, local_tab_pool_.Capacity()); |
| |
| error_handler_ = std::move(error_handler); |
| sync_processor_ = std::move(sync_processor); |
| |
| // It's possible(via RebuildAssociations) for lost_navigations_recorder_ to |
| // persist between sync being stopped and started. If it did persist, it's |
| // already associated with |sync_processor|, so leave it alone. |
| if (!lost_navigations_recorder_.get()) { |
| lost_navigations_recorder_ = |
| base::MakeUnique<sync_sessions::LostNavigationsRecorder>(); |
| sync_processor_->AddLocalChangeObserver(lost_navigations_recorder_.get()); |
| } |
| |
| local_session_header_node_id_ = TabNodePool::kInvalidTabNodeID; |
| |
| // Make sure we have a machine tag. We do this now (versus earlier) as it's |
| // a conveniently safe time to assert sync is ready and the cache_guid is |
| // initialized. |
| if (current_machine_tag_.empty()) { |
| InitializeCurrentMachineTag(); |
| } |
| |
| // SessionDataTypeController ensures that the local device info |
| // is available before activating this datatype. |
| DCHECK(local_device_); |
| const DeviceInfo* local_device_info = local_device_->GetLocalDeviceInfo(); |
| if (local_device_info) { |
| current_session_name_ = local_device_info->client_name(); |
| } else { |
| merge_result.set_error(error_handler_->CreateAndUploadError( |
| FROM_HERE, "Failed to get local device info.")); |
| return merge_result; |
| } |
| |
| session_tracker_.SetLocalSessionTag(current_machine_tag_); |
| |
| syncer::SyncChangeList new_changes; |
| |
| // First, we iterate over sync data to update our session_tracker_. |
| syncer::SyncDataList restored_tabs; |
| if (!InitFromSyncModel(initial_sync_data, &restored_tabs, &new_changes)) { |
| // The sync db didn't have a header node for us. Create one. |
| sync_pb::EntitySpecifics specifics; |
| sync_pb::SessionSpecifics* base_specifics = specifics.mutable_session(); |
| base_specifics->set_session_tag(current_machine_tag()); |
| sync_pb::SessionHeader* header_s = base_specifics->mutable_header(); |
| header_s->set_client_name(current_session_name_); |
| header_s->set_device_type(local_device_info->device_type()); |
| syncer::SyncData data = syncer::SyncData::CreateLocalData( |
| current_machine_tag(), current_session_name_, specifics); |
| new_changes.push_back( |
| syncer::SyncChange(FROM_HERE, syncer::SyncChange::ACTION_ADD, data)); |
| } |
| |
| #if defined(OS_ANDROID) |
| std::string sync_machine_tag( |
| BuildMachineTag(local_device_->GetLocalSyncCacheGUID())); |
| if (current_machine_tag_.compare(sync_machine_tag) != 0) |
| DeleteForeignSessionInternal(sync_machine_tag, &new_changes); |
| #endif |
| |
| // Check if anything has changed on the local client side. |
| AssociateWindows(RELOAD_TABS, restored_tabs, &new_changes); |
| local_tab_pool_out_of_sync_ = false; |
| |
| merge_result.set_error( |
| sync_processor_->ProcessSyncChanges(FROM_HERE, new_changes)); |
| |
| local_event_router_->StartRoutingTo(this); |
| return merge_result; |
| } |
| |
| void SessionsSyncManager::AssociateWindows( |
| ReloadTabsOption option, |
| const syncer::SyncDataList& restored_tabs, |
| syncer::SyncChangeList* change_output) { |
| const std::string local_tag = current_machine_tag(); |
| sync_pb::SessionSpecifics specifics; |
| specifics.set_session_tag(local_tag); |
| sync_pb::SessionHeader* header_s = specifics.mutable_header(); |
| SyncedSession* current_session = session_tracker_.GetSession(local_tag); |
| current_session->modified_time = base::Time::Now(); |
| header_s->set_client_name(current_session_name_); |
| // SessionDataTypeController ensures that the local device info |
| // is available before activating this datatype. |
| DCHECK(local_device_); |
| const DeviceInfo* local_device_info = local_device_->GetLocalDeviceInfo(); |
| header_s->set_device_type(local_device_info->device_type()); |
| |
| session_tracker_.ResetSessionTracking(local_tag); |
| std::set<const SyncedWindowDelegate*> windows = |
| synced_window_delegates_getter()->GetSyncedWindowDelegates(); |
| |
| if (option == RELOAD_TABS) { |
| UMA_HISTOGRAM_COUNTS("Sync.SessionWindows", windows.size()); |
| } |
| if (windows.size() == 0) { |
| // Assume that the window hasn't loaded. Attempting to associate now would |
| // clobber any old windows, so just return. |
| LOG(ERROR) << "No windows present, see crbug.com/639009"; |
| return; |
| } |
| for (std::set<const SyncedWindowDelegate*>::const_iterator i = |
| windows.begin(); |
| i != windows.end(); ++i) { |
| if (option == RELOAD_TABS) { |
| UMA_HISTOGRAM_COUNTS("Sync.SessionTabs", (*i)->GetTabCount()); |
| } |
| |
| // Make sure the window has tabs and a viewable window. The viewable window |
| // check is necessary because, for example, when a browser is closed the |
| // destructor is not necessarily run immediately. This means its possible |
| // for us to get a handle to a browser that is about to be removed. If |
| // the tab count is 0 or the window is null, the browser is about to be |
| // deleted, so we ignore it. |
| if ((*i)->ShouldSync() && (*i)->GetTabCount() && (*i)->HasWindow()) { |
| sync_pb::SessionWindow window_s; |
| SessionID::id_type window_id = (*i)->GetSessionId(); |
| DVLOG(1) << "Associating window " << window_id << " with " |
| << (*i)->GetTabCount() << " tabs."; |
| window_s.set_window_id(window_id); |
| // Note: We don't bother to set selected tab index anymore. We still |
| // consume it when receiving foreign sessions, as reading it is free, but |
| // it triggers too many sync cycles with too little value to make setting |
| // it worthwhile. |
| if ((*i)->IsTypeTabbed()) { |
| window_s.set_browser_type( |
| sync_pb::SessionWindow_BrowserType_TYPE_TABBED); |
| } else if ((*i)->IsTypePopup()) { |
| window_s.set_browser_type( |
| sync_pb::SessionWindow_BrowserType_TYPE_POPUP); |
| } else { |
| // This is a custom tab within an app. These will not be restored on |
| // startup if not present. |
| window_s.set_browser_type( |
| sync_pb::SessionWindow_BrowserType_TYPE_CUSTOM_TAB); |
| } |
| |
| bool found_tabs = false; |
| for (int j = 0; j < (*i)->GetTabCount(); ++j) { |
| SessionID::id_type tab_id = (*i)->GetTabIdAt(j); |
| SyncedTabDelegate* synced_tab = (*i)->GetTabAt(j); |
| |
| // GetTabAt can return a null tab; in that case just skip it. |
| if (!synced_tab) |
| continue; |
| |
| if (synced_tab->IsPlaceholderTab()) { |
| // For tabs without WebContents update the |tab_id| and |window_id|, |
| // as it could have changed after a session restore. |
| // Note: We cannot check if a tab is valid if it has no WebContents. |
| // We assume any such tab is valid and leave the contents of |
| // corresponding sync node unchanged. |
| if (synced_tab->GetSyncId() > TabNodePool::kInvalidTabNodeID && |
| tab_id > TabNodePool::kInvalidTabID) { |
| AssociateRestoredPlaceholderTab(*synced_tab, tab_id, window_id, |
| restored_tabs, change_output); |
| found_tabs = true; |
| window_s.add_tab(tab_id); |
| } |
| continue; |
| } |
| |
| if (RELOAD_TABS == option) |
| AssociateTab(synced_tab, change_output); |
| |
| // If the tab is valid, it would have been added to the tracker either |
| // by the above AssociateTab call (at association time), or by the |
| // change processor calling AssociateTab for all modified tabs. |
| // Therefore, we can key whether this window has valid tabs based on |
| // the tab's presence in the tracker. |
| const sessions::SessionTab* tab = nullptr; |
| if (session_tracker_.LookupSessionTab(local_tag, tab_id, &tab)) { |
| found_tabs = true; |
| window_s.add_tab(tab_id); |
| } |
| } |
| if (found_tabs) { |
| sync_pb::SessionWindow* header_window = header_s->add_window(); |
| *header_window = window_s; |
| |
| // Update this window's representation in the synced session tracker. |
| session_tracker_.PutWindowInSession(local_tag, window_id); |
| BuildSyncedSessionFromSpecifics( |
| local_tag, window_s, current_session->modified_time, |
| current_session->windows[window_id].get()); |
| } |
| } |
| } |
| local_tab_pool_.DeleteUnassociatedTabNodes(change_output); |
| session_tracker_.CleanupSession(local_tag); |
| |
| // Always update the header. Sync takes care of dropping this update |
| // if the entity specifics are identical (i.e windows, client name did |
| // not change). |
| sync_pb::EntitySpecifics entity; |
| entity.mutable_session()->CopyFrom(specifics); |
| syncer::SyncData data = syncer::SyncData::CreateLocalData( |
| current_machine_tag(), current_session_name_, entity); |
| change_output->push_back( |
| syncer::SyncChange(FROM_HERE, syncer::SyncChange::ACTION_UPDATE, data)); |
| } |
| |
| void SessionsSyncManager::AssociateTab(SyncedTabDelegate* const tab, |
| syncer::SyncChangeList* change_output) { |
| DCHECK(!tab->IsPlaceholderTab()); |
| SessionID::id_type tab_id = tab->GetSessionId(); |
| |
| if (tab->IsBeingDestroyed()) { |
| // This tab is closing. |
| TabLinksMap::iterator tab_iter = local_tab_map_.find(tab_id); |
| if (tab_iter == local_tab_map_.end()) { |
| // We aren't tracking this tab (for example, sync setting page). |
| return; |
| } |
| local_tab_pool_.FreeTabNode(tab_iter->second->tab_node_id(), change_output); |
| local_tab_map_.erase(tab_iter); |
| return; |
| } |
| |
| if (!tab->ShouldSync(sessions_client_)) |
| return; |
| |
| TabLinksMap::iterator local_tab_map_iter = local_tab_map_.find(tab_id); |
| TabLink* tab_link = nullptr; |
| |
| if (local_tab_map_iter == local_tab_map_.end()) { |
| int tab_node_id = tab->GetSyncId(); |
| // If there is an old sync node for the tab, reuse it. If this is a new |
| // tab, get a sync node for it. |
| if (!local_tab_pool_.IsUnassociatedTabNode(tab_node_id)) { |
| tab_node_id = local_tab_pool_.GetFreeTabNode(change_output); |
| tab->SetSyncId(tab_node_id); |
| } |
| local_tab_pool_.AssociateTabNode(tab_node_id, tab_id); |
| tab_link = new TabLink(tab_node_id, tab); |
| local_tab_map_[tab_id] = make_linked_ptr<TabLink>(tab_link); |
| } else { |
| // This tab is already associated with a sync node, reuse it. |
| // Note: on some platforms the tab object may have changed, so we ensure |
| // the tab link is up to date. |
| tab_link = local_tab_map_iter->second.get(); |
| local_tab_map_iter->second->set_tab(tab); |
| } |
| DCHECK(tab_link); |
| DCHECK_NE(tab_link->tab_node_id(), TabNodePool::kInvalidTabNodeID); |
| DVLOG(1) << "Reloading tab " << tab_id << " from window " |
| << tab->GetWindowId(); |
| |
| // Write to sync model. |
| sync_pb::EntitySpecifics specifics; |
| LocalTabDelegateToSpecifics(*tab, specifics.mutable_session()); |
| syncer::SyncData data = syncer::SyncData::CreateLocalData( |
| TabNodePool::TabIdToTag(current_machine_tag_, tab_link->tab_node_id()), |
| current_session_name_, specifics); |
| change_output->push_back( |
| syncer::SyncChange(FROM_HERE, syncer::SyncChange::ACTION_UPDATE, data)); |
| |
| int current_index = tab->GetCurrentEntryIndex(); |
| const GURL new_url = tab->GetVirtualURLAtIndex(current_index); |
| if (new_url != tab_link->url()) { |
| tab_link->set_url(new_url); |
| favicon_cache_.OnFaviconVisited(new_url, |
| tab->GetFaviconURLAtIndex(current_index)); |
| page_revisit_broadcaster_.OnPageVisit( |
| new_url, tab->GetTransitionAtIndex(current_index)); |
| } |
| |
| session_tracker_.GetSession(current_machine_tag())->modified_time = |
| base::Time::Now(); |
| } |
| |
| void SessionsSyncManager::RebuildAssociations() { |
| syncer::SyncDataList data(sync_processor_->GetAllSyncData(syncer::SESSIONS)); |
| std::unique_ptr<syncer::SyncErrorFactory> error_handler( |
| std::move(error_handler_)); |
| std::unique_ptr<syncer::SyncChangeProcessor> processor( |
| std::move(sync_processor_)); |
| |
| StopSyncing(syncer::SESSIONS); |
| MergeDataAndStartSyncing(syncer::SESSIONS, data, std::move(processor), |
| std::move(error_handler)); |
| } |
| |
| bool SessionsSyncManager::IsValidSessionHeader( |
| const sync_pb::SessionHeader& header) { |
| // Verify that tab IDs appear only once within a session. |
| // Intended to prevent http://crbug.com/360822. |
| std::set<int> session_tab_ids; |
| for (int i = 0; i < header.window_size(); ++i) { |
| const sync_pb::SessionWindow& window = header.window(i); |
| for (int j = 0; j < window.tab_size(); ++j) { |
| const int tab_id = window.tab(j); |
| bool success = session_tab_ids.insert(tab_id).second; |
| if (!success) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| void SessionsSyncManager::OnLocalTabModified(SyncedTabDelegate* modified_tab) { |
| if (!modified_tab->IsBeingDestroyed()) { |
| GURL virtual_url = |
| modified_tab->GetVirtualURLAtIndex(modified_tab->GetCurrentEntryIndex()); |
| if (virtual_url.is_valid() && |
| virtual_url.spec() == kNTPOpenTabSyncURL) { |
| DVLOG(1) << "Triggering sync refresh for sessions datatype."; |
| if (!datatype_refresh_callback_.is_null()) |
| datatype_refresh_callback_.Run(); |
| } |
| } |
| |
| if (local_tab_pool_out_of_sync_) { |
| // If our tab pool is corrupt, pay the price of a full re-association to |
| // fix things up. This takes care of the new tab modification as well. |
| RebuildAssociations(); |
| DCHECK(!local_tab_pool_out_of_sync_); |
| return; |
| } |
| |
| syncer::SyncChangeList changes; |
| AssociateTab(modified_tab, &changes); |
| // Note, we always associate windows because it's possible a tab became |
| // "interesting" by going to a valid URL, in which case it needs to be added |
| // to the window's tab information. Similarly, if a tab became |
| // "uninteresting", we remove it from the window's tab information. |
| AssociateWindows(DONT_RELOAD_TABS, syncer::SyncDataList(), &changes); |
| sync_processor_->ProcessSyncChanges(FROM_HERE, changes); |
| } |
| |
| void SessionsSyncManager::OnFaviconsChanged(const std::set<GURL>& page_urls, |
| const GURL& /* icon_url */) { |
| // TODO(zea): consider a separate container for tabs with outstanding favicon |
| // loads so we don't have to iterate through all tabs comparing urls. |
| for (const GURL& page_url : page_urls) { |
| for (TabLinksMap::iterator tab_iter = local_tab_map_.begin(); |
| tab_iter != local_tab_map_.end(); ++tab_iter) { |
| if (tab_iter->second->url() == page_url) |
| favicon_cache_.OnPageFaviconUpdated(page_url); |
| } |
| } |
| } |
| |
| void SessionsSyncManager::StopSyncing(syncer::ModelType type) { |
| local_event_router_->Stop(); |
| if (sync_processor_.get() && lost_navigations_recorder_.get()) { |
| sync_processor_->RemoveLocalChangeObserver( |
| lost_navigations_recorder_.get()); |
| lost_navigations_recorder_.reset(); |
| } |
| sync_processor_.reset(nullptr); |
| error_handler_.reset(); |
| session_tracker_.Clear(); |
| local_tab_map_.clear(); |
| local_tab_pool_.Clear(); |
| current_machine_tag_.clear(); |
| current_session_name_.clear(); |
| local_session_header_node_id_ = TabNodePool::kInvalidTabNodeID; |
| } |
| |
| syncer::SyncDataList SessionsSyncManager::GetAllSyncData( |
| syncer::ModelType type) const { |
| syncer::SyncDataList list; |
| const SyncedSession* session = nullptr; |
| if (!session_tracker_.LookupLocalSession(&session)) |
| return syncer::SyncDataList(); |
| |
| // First construct the header node. |
| sync_pb::EntitySpecifics header_entity; |
| header_entity.mutable_session()->set_session_tag(current_machine_tag()); |
| sync_pb::SessionHeader* header_specifics = |
| header_entity.mutable_session()->mutable_header(); |
| header_specifics->MergeFrom(session->ToSessionHeader()); |
| syncer::SyncData data = syncer::SyncData::CreateLocalData( |
| current_machine_tag(), current_session_name_, header_entity); |
| list.push_back(data); |
| |
| for (auto win_iter = session->windows.begin(); |
| win_iter != session->windows.end(); ++win_iter) { |
| for (auto tabs_iter = win_iter->second->tabs.begin(); |
| tabs_iter != win_iter->second->tabs.end(); ++tabs_iter) { |
| sync_pb::EntitySpecifics entity; |
| sync_pb::SessionSpecifics* specifics = entity.mutable_session(); |
| specifics->mutable_tab()->MergeFrom((*tabs_iter)->ToSyncData()); |
| specifics->set_session_tag(current_machine_tag_); |
| |
| TabLinksMap::const_iterator tab_map_iter = |
| local_tab_map_.find((*tabs_iter)->tab_id.id()); |
| DCHECK(tab_map_iter != local_tab_map_.end()); |
| specifics->set_tab_node_id(tab_map_iter->second->tab_node_id()); |
| syncer::SyncData data = syncer::SyncData::CreateLocalData( |
| TabNodePool::TabIdToTag(current_machine_tag_, |
| specifics->tab_node_id()), |
| current_session_name_, entity); |
| list.push_back(data); |
| } |
| } |
| return list; |
| } |
| |
| bool SessionsSyncManager::GetLocalSession(const SyncedSession** local_session) { |
| if (current_machine_tag_.empty()) |
| return false; |
| *local_session = session_tracker_.GetSession(current_machine_tag()); |
| return true; |
| } |
| |
| syncer::SyncError SessionsSyncManager::ProcessSyncChanges( |
| const tracked_objects::Location& from_here, |
| const syncer::SyncChangeList& change_list) { |
| if (!sync_processor_.get()) { |
| syncer::SyncError error(FROM_HERE, syncer::SyncError::DATATYPE_ERROR, |
| "Models not yet associated.", syncer::SESSIONS); |
| return error; |
| } |
| |
| for (syncer::SyncChangeList::const_iterator it = change_list.begin(); |
| it != change_list.end(); ++it) { |
| DCHECK(it->IsValid()); |
| DCHECK(it->sync_data().GetSpecifics().has_session()); |
| const sync_pb::SessionSpecifics& session = |
| it->sync_data().GetSpecifics().session(); |
| switch (it->change_type()) { |
| case syncer::SyncChange::ACTION_DELETE: |
| // Deletions are all or nothing (since we only ever delete entire |
| // sessions). Therefore we don't care if it's a tab node or meta node, |
| // and just ensure we've disassociated. |
| if (current_machine_tag() == session.session_tag()) { |
| // Another client has attempted to delete our local data (possibly by |
| // error or a clock is inaccurate). Just ignore the deletion for now |
| // to avoid any possible ping-pong delete/reassociate sequence, but |
| // remember that this happened as our TabNodePool is inconsistent. |
| local_tab_pool_out_of_sync_ = true; |
| LOG(WARNING) << "Local session data deleted. Ignoring until next " |
| << "local navigation event."; |
| } else if (session.has_header()) { |
| // Disassociate only when header node is deleted. For tab node |
| // deletions, the header node will be updated and foreign tab will |
| // get deleted. |
| DisassociateForeignSession(session.session_tag()); |
| } else if (session.has_tab()) { |
| // The challenge here is that we don't know if this tab deletion is |
| // being processed before or after the parent was updated to no longer |
| // references the tab. Or, even more extreme, the parent has been |
| // deleted as well. Tell the tracker to do what it can. The header's |
| // update will mostly get us into the correct state, the only thing |
| // this deletion needs to accomplish is make sure we never tell sync |
| // to delete this tab later during garbage collection. |
| session_tracker_.DeleteForeignTab(session.session_tag(), |
| session.tab_node_id()); |
| } |
| break; |
| case syncer::SyncChange::ACTION_ADD: |
| case syncer::SyncChange::ACTION_UPDATE: |
| if (current_machine_tag() == session.session_tag()) { |
| // We should only ever receive a change to our own machine's session |
| // info if encryption was turned on. In that case, the data is still |
| // the same, so we can ignore. |
| LOG(WARNING) << "Dropping modification to local session."; |
| return syncer::SyncError(); |
| } |
| UpdateTrackerWithForeignSession( |
| session, syncer::SyncDataRemote(it->sync_data()).GetModifiedTime()); |
| break; |
| default: |
| NOTREACHED() << "Processing sync changes failed, unknown change type."; |
| } |
| } |
| |
| if (!sessions_updated_callback_.is_null()) |
| sessions_updated_callback_.Run(); |
| return syncer::SyncError(); |
| } |
| |
| syncer::SyncChange SessionsSyncManager::TombstoneTab( |
| const sync_pb::SessionSpecifics& tab) { |
| if (!tab.has_tab_node_id()) { |
| LOG(WARNING) << "Old sessions node without tab node id; can't tombstone."; |
| return syncer::SyncChange(); |
| } else { |
| return syncer::SyncChange( |
| FROM_HERE, SyncChange::ACTION_DELETE, |
| SyncData::CreateLocalDelete( |
| TabNodePool::TabIdToTag(current_machine_tag(), tab.tab_node_id()), |
| syncer::SESSIONS)); |
| } |
| } |
| |
| bool SessionsSyncManager::GetAllForeignSessions( |
| std::vector<const SyncedSession*>* sessions) { |
| if (!session_tracker_.LookupAllForeignSessions( |
| sessions, SyncedSessionTracker::PRESENTABLE)) |
| return false; |
| std::sort(sessions->begin(), sessions->end(), SessionsRecencyComparator); |
| return true; |
| } |
| |
| bool SessionsSyncManager::InitFromSyncModel( |
| const syncer::SyncDataList& sync_data, |
| syncer::SyncDataList* restored_tabs, |
| syncer::SyncChangeList* new_changes) { |
| bool found_current_header = false; |
| int bad_foreign_hash_count = 0; |
| for (syncer::SyncDataList::const_iterator it = sync_data.begin(); |
| it != sync_data.end(); ++it) { |
| const syncer::SyncData& data = *it; |
| DCHECK(data.GetSpecifics().has_session()); |
| syncer::SyncDataRemote remote(data); |
| const sync_pb::SessionSpecifics& specifics = data.GetSpecifics().session(); |
| if (specifics.session_tag().empty() || |
| (specifics.has_tab() && |
| (!specifics.has_tab_node_id() || !specifics.tab().has_tab_id()))) { |
| syncer::SyncChange tombstone(TombstoneTab(specifics)); |
| if (tombstone.IsValid()) |
| new_changes->push_back(tombstone); |
| } else if (specifics.session_tag() != current_machine_tag()) { |
| if (TagHashFromSpecifics(specifics) == remote.GetClientTagHash()) { |
| UpdateTrackerWithForeignSession(specifics, remote.GetModifiedTime()); |
| } else { |
| // In the past, like years ago, we believe that some session data was |
| // created with bad tag hashes. This causes any change this client makes |
| // to that foreign data (like deletion through garbage collection) to |
| // trigger a data type error because the tag looking mechanism fails. So |
| // look for these and delete via remote SyncData, which uses a server id |
| // lookup mechanism instead, see crbug.com/604657. |
| bad_foreign_hash_count++; |
| new_changes->push_back( |
| syncer::SyncChange(FROM_HERE, SyncChange::ACTION_DELETE, remote)); |
| } |
| } else { |
| // This is previously stored local session information. |
| if (specifics.has_header() && !found_current_header) { |
| // This is our previous header node, reuse it. |
| found_current_header = true; |
| if (specifics.header().has_client_name()) |
| current_session_name_ = specifics.header().client_name(); |
| } else { |
| if (specifics.has_header() || !specifics.has_tab()) { |
| LOG(WARNING) << "Found more than one session header node with local " |
| << "tag."; |
| syncer::SyncChange tombstone(TombstoneTab(specifics)); |
| if (tombstone.IsValid()) |
| new_changes->push_back(tombstone); |
| } else { |
| // This is a valid old tab node, add it to the pool so it can be |
| // reused for reassociation. |
| local_tab_pool_.AddTabNode(specifics.tab_node_id()); |
| restored_tabs->push_back(*it); |
| } |
| } |
| } |
| } |
| |
| // Cleanup all foreign sessions, since orphaned tabs may have been added after |
| // the header. |
| std::vector<const SyncedSession*> sessions; |
| session_tracker_.LookupAllForeignSessions(&sessions, |
| SyncedSessionTracker::RAW); |
| for (const auto* session : sessions) { |
| session_tracker_.CleanupSession(session->session_tag); |
| } |
| |
| UMA_HISTOGRAM_COUNTS_100("Sync.SessionsBadForeignHashOnMergeCount", |
| bad_foreign_hash_count); |
| |
| return found_current_header; |
| } |
| |
| void SessionsSyncManager::UpdateTrackerWithForeignSession( |
| const sync_pb::SessionSpecifics& specifics, |
| const base::Time& modification_time) { |
| std::string foreign_session_tag = specifics.session_tag(); |
| DCHECK_NE(foreign_session_tag, current_machine_tag()); |
| |
| SyncedSession* foreign_session = |
| session_tracker_.GetSession(foreign_session_tag); |
| if (specifics.has_header()) { |
| // Read in the header data for this foreign session. Header data is |
| // essentially a collection of windows, each of which has an ordered id list |
| // for their tabs. |
| |
| if (!IsValidSessionHeader(specifics.header())) { |
| LOG(WARNING) << "Ignoring foreign session node with invalid header " |
| << "and tag " << foreign_session_tag << "."; |
| return; |
| } |
| |
| // Load (or create) the SyncedSession object for this client. |
| const sync_pb::SessionHeader& header = specifics.header(); |
| PopulateSessionHeaderFromSpecifics(header, modification_time, |
| foreign_session); |
| |
| // Reset the tab/window tracking for this session (must do this before |
| // we start calling PutWindowInSession and PutTabInWindow so that all |
| // unused tabs/windows get cleared by the CleanupSession(...) call). |
| session_tracker_.ResetSessionTracking(foreign_session_tag); |
| |
| // Process all the windows and their tab information. |
| int num_windows = header.window_size(); |
| DVLOG(1) << "Associating " << foreign_session_tag << " with " << num_windows |
| << " windows."; |
| |
| for (int i = 0; i < num_windows; ++i) { |
| const sync_pb::SessionWindow& window_s = header.window(i); |
| SessionID::id_type window_id = window_s.window_id(); |
| session_tracker_.PutWindowInSession(foreign_session_tag, window_id); |
| BuildSyncedSessionFromSpecifics( |
| foreign_session_tag, window_s, modification_time, |
| foreign_session->windows[window_id].get()); |
| } |
| // Delete any closed windows and unused tabs as necessary. |
| session_tracker_.CleanupSession(foreign_session_tag); |
| } else if (specifics.has_tab()) { |
| const sync_pb::SessionTab& tab_s = specifics.tab(); |
| SessionID::id_type tab_id = tab_s.tab_id(); |
| |
| const sessions::SessionTab* existing_tab; |
| if (session_tracker_.LookupSessionTab(foreign_session_tag, tab_id, |
| &existing_tab) && |
| existing_tab->timestamp > modification_time) { |
| // Force the tracker to remember this tab node id, even if it isn't |
| // currently being used. |
| session_tracker_.GetTab(foreign_session_tag, tab_id, |
| specifics.tab_node_id()); |
| DVLOG(1) << "Ignoring " << foreign_session_tag << "'s session tab " |
| << tab_id << " with earlier modification time"; |
| return; |
| } |
| |
| sessions::SessionTab* tab = session_tracker_.GetTab( |
| foreign_session_tag, tab_id, specifics.tab_node_id()); |
| |
| // Update SessionTab based on protobuf. |
| tab->SetFromSyncData(tab_s, modification_time); |
| |
| // If a favicon or favicon urls are present, load the URLs and visit |
| // times into the in-memory favicon cache. |
| RefreshFaviconVisitTimesFromForeignTab(tab_s, modification_time); |
| |
| // Update the last modified time. |
| if (foreign_session->modified_time < modification_time) |
| foreign_session->modified_time = modification_time; |
| } else { |
| LOG(WARNING) << "Ignoring foreign session node with missing header/tab " |
| << "fields and tag " << foreign_session_tag << "."; |
| } |
| } |
| |
| void SessionsSyncManager::InitializeCurrentMachineTag() { |
| DCHECK(current_machine_tag_.empty()); |
| std::string persisted_guid; |
| persisted_guid = sync_prefs_->GetSyncSessionsGUID(); |
| if (!persisted_guid.empty()) { |
| current_machine_tag_ = persisted_guid; |
| DVLOG(1) << "Restoring persisted session sync guid: " << persisted_guid; |
| } else { |
| DCHECK(local_device_); |
| std::string cache_guid = local_device_->GetLocalSyncCacheGUID(); |
| DCHECK(!cache_guid.empty()); |
| current_machine_tag_ = BuildMachineTag(cache_guid); |
| DVLOG(1) << "Creating session sync guid: " << current_machine_tag_; |
| sync_prefs_->SetSyncSessionsGUID(current_machine_tag_); |
| } |
| |
| local_tab_pool_.SetMachineTag(current_machine_tag_); |
| } |
| |
| // static |
| void SessionsSyncManager::PopulateSessionHeaderFromSpecifics( |
| const sync_pb::SessionHeader& header_specifics, |
| base::Time mtime, |
| SyncedSession* session_header) { |
| if (header_specifics.has_client_name()) |
| session_header->session_name = header_specifics.client_name(); |
| if (header_specifics.has_device_type()) { |
| switch (header_specifics.device_type()) { |
| case sync_pb::SyncEnums_DeviceType_TYPE_WIN: |
| session_header->device_type = SyncedSession::TYPE_WIN; |
| break; |
| case sync_pb::SyncEnums_DeviceType_TYPE_MAC: |
| session_header->device_type = SyncedSession::TYPE_MACOSX; |
| break; |
| case sync_pb::SyncEnums_DeviceType_TYPE_LINUX: |
| session_header->device_type = SyncedSession::TYPE_LINUX; |
| break; |
| case sync_pb::SyncEnums_DeviceType_TYPE_CROS: |
| session_header->device_type = SyncedSession::TYPE_CHROMEOS; |
| break; |
| case sync_pb::SyncEnums_DeviceType_TYPE_PHONE: |
| session_header->device_type = SyncedSession::TYPE_PHONE; |
| break; |
| case sync_pb::SyncEnums_DeviceType_TYPE_TABLET: |
| session_header->device_type = SyncedSession::TYPE_TABLET; |
| break; |
| case sync_pb::SyncEnums_DeviceType_TYPE_OTHER: |
| // Intentionally fall-through |
| default: |
| session_header->device_type = SyncedSession::TYPE_OTHER; |
| break; |
| } |
| } |
| session_header->modified_time = |
| std::max(mtime, session_header->modified_time); |
| } |
| |
| // static |
| void SessionsSyncManager::BuildSyncedSessionFromSpecifics( |
| const std::string& session_tag, |
| const sync_pb::SessionWindow& specifics, |
| base::Time mtime, |
| sessions::SessionWindow* session_window) { |
| if (specifics.has_window_id()) |
| session_window->window_id.set_id(specifics.window_id()); |
| if (specifics.has_selected_tab_index()) |
| session_window->selected_tab_index = specifics.selected_tab_index(); |
| if (specifics.has_browser_type()) { |
| // TODO(skuhne): Sync data writes |BrowserType| not |
| // |SessionWindow::WindowType|. This should get changed. |
| if (specifics.browser_type() == |
| sync_pb::SessionWindow_BrowserType_TYPE_TABBED) { |
| session_window->type = sessions::SessionWindow::TYPE_TABBED; |
| } else { |
| // Note: custom tabs are treated like popup windows on restore, as you can |
| // restore a custom tab on a platform that doesn't support them. |
| session_window->type = sessions::SessionWindow::TYPE_POPUP; |
| } |
| } |
| session_window->timestamp = mtime; |
| session_window->tabs.resize(specifics.tab_size()); |
| for (int i = 0; i < specifics.tab_size(); i++) { |
| SessionID::id_type tab_id = specifics.tab(i); |
| session_tracker_.PutTabInWindow(session_tag, session_window->window_id.id(), |
| tab_id, i); |
| } |
| } |
| |
| void SessionsSyncManager::RefreshFaviconVisitTimesFromForeignTab( |
| const sync_pb::SessionTab& tab, |
| const base::Time& modification_time) { |
| // First go through and iterate over all the navigations, checking if any |
| // have valid favicon urls. |
| for (int i = 0; i < tab.navigation_size(); ++i) { |
| if (!tab.navigation(i).favicon_url().empty()) { |
| const std::string& page_url = tab.navigation(i).virtual_url(); |
| const std::string& favicon_url = tab.navigation(i).favicon_url(); |
| favicon_cache_.OnReceivedSyncFavicon( |
| GURL(page_url), GURL(favicon_url), std::string(), |
| syncer::TimeToProtoTime(modification_time)); |
| } |
| } |
| } |
| |
| bool SessionsSyncManager::GetSyncedFaviconForPageURL( |
| const std::string& page_url, |
| scoped_refptr<base::RefCountedMemory>* favicon_png) const { |
| return favicon_cache_.GetSyncedFaviconForPageURL(GURL(page_url), favicon_png); |
| } |
| |
| void SessionsSyncManager::DeleteForeignSession(const std::string& tag) { |
| syncer::SyncChangeList changes; |
| DeleteForeignSessionInternal(tag, &changes); |
| sync_processor_->ProcessSyncChanges(FROM_HERE, changes); |
| } |
| |
| void SessionsSyncManager::DeleteForeignSessionInternal( |
| const std::string& tag, |
| syncer::SyncChangeList* change_output) { |
| if (tag == current_machine_tag()) { |
| LOG(ERROR) << "Attempting to delete local session. This is not currently " |
| << "supported."; |
| return; |
| } |
| |
| std::set<int> tab_node_ids_to_delete; |
| session_tracker_.LookupTabNodeIds(tag, &tab_node_ids_to_delete); |
| if (DisassociateForeignSession(tag)) { |
| // Only tell sync to delete the header if there was one. |
| change_output->push_back( |
| syncer::SyncChange(FROM_HERE, SyncChange::ACTION_DELETE, |
| SyncData::CreateLocalDelete(tag, syncer::SESSIONS))); |
| } |
| for (std::set<int>::const_iterator it = tab_node_ids_to_delete.begin(); |
| it != tab_node_ids_to_delete.end(); ++it) { |
| change_output->push_back(syncer::SyncChange( |
| FROM_HERE, SyncChange::ACTION_DELETE, |
| SyncData::CreateLocalDelete(TabNodePool::TabIdToTag(tag, *it), |
| syncer::SESSIONS))); |
| } |
| if (!sessions_updated_callback_.is_null()) |
| sessions_updated_callback_.Run(); |
| } |
| |
| bool SessionsSyncManager::DisassociateForeignSession( |
| const std::string& foreign_session_tag) { |
| DCHECK_NE(foreign_session_tag, current_machine_tag()); |
| DVLOG(1) << "Disassociating session " << foreign_session_tag; |
| return session_tracker_.DeleteSession(foreign_session_tag); |
| } |
| |
| bool SessionsSyncManager::GetForeignSession( |
| const std::string& tag, |
| std::vector<const sessions::SessionWindow*>* windows) { |
| return session_tracker_.LookupSessionWindows(tag, windows); |
| } |
| |
| bool SessionsSyncManager::GetForeignSessionTabs( |
| const std::string& tag, |
| std::vector<const sessions::SessionTab*>* tabs) { |
| std::vector<const sessions::SessionWindow*> windows; |
| if (!session_tracker_.LookupSessionWindows(tag, &windows)) |
| return false; |
| |
| // Prune those tabs that are not syncable or are NewTabPage, then sort them |
| // from most recent to least recent, independent of which window the tabs were |
| // from. |
| for (size_t j = 0; j < windows.size(); ++j) { |
| const sessions::SessionWindow* window = windows[j]; |
| for (size_t t = 0; t < window->tabs.size(); ++t) { |
| sessions::SessionTab* const tab = window->tabs[t].get(); |
| if (tab->navigations.empty()) |
| continue; |
| const sessions::SerializedNavigationEntry& current_navigation = |
| tab->navigations.at(tab->normalized_navigation_index()); |
| if (!sessions_client_->ShouldSyncURL(current_navigation.virtual_url())) |
| continue; |
| tabs->push_back(tab); |
| } |
| } |
| std::sort(tabs->begin(), tabs->end(), TabsRecencyComparator); |
| return true; |
| } |
| |
| bool SessionsSyncManager::GetForeignTab(const std::string& tag, |
| const SessionID::id_type tab_id, |
| const sessions::SessionTab** tab) { |
| const sessions::SessionTab* synced_tab = nullptr; |
| bool success = session_tracker_.LookupSessionTab(tag, tab_id, &synced_tab); |
| if (success) |
| *tab = synced_tab; |
| return success; |
| } |
| |
| void SessionsSyncManager::LocalTabDelegateToSpecifics( |
| const SyncedTabDelegate& tab_delegate, |
| sync_pb::SessionSpecifics* specifics) { |
| sessions::SessionTab* session_tab = nullptr; |
| session_tab = session_tracker_.GetTab(current_machine_tag(), |
| tab_delegate.GetSessionId(), |
| tab_delegate.GetSyncId()); |
| SetSessionTabFromDelegate(tab_delegate, base::Time::Now(), session_tab); |
| SetVariationIds(session_tab); |
| sync_pb::SessionTab tab_s = session_tab->ToSyncData(); |
| specifics->set_session_tag(current_machine_tag_); |
| specifics->set_tab_node_id(tab_delegate.GetSyncId()); |
| specifics->mutable_tab()->CopyFrom(tab_s); |
| } |
| |
| void SessionsSyncManager::AssociateRestoredPlaceholderTab( |
| const SyncedTabDelegate& tab_delegate, |
| SessionID::id_type new_tab_id, |
| SessionID::id_type new_window_id, |
| const syncer::SyncDataList& restored_tabs, |
| syncer::SyncChangeList* change_output) { |
| DCHECK_NE(tab_delegate.GetSyncId(), TabNodePool::kInvalidTabNodeID); |
| // Rewrite the tab using |restored_tabs| to retrieve the specifics. |
| if (restored_tabs.empty()) { |
| DLOG(WARNING) << "Can't Update tab ID."; |
| return; |
| } |
| |
| for (syncer::SyncDataList::const_iterator it = restored_tabs.begin(); |
| it != restored_tabs.end(); ++it) { |
| if (it->GetSpecifics().session().tab_node_id() != |
| tab_delegate.GetSyncId()) { |
| continue; |
| } |
| |
| sync_pb::EntitySpecifics entity; |
| sync_pb::SessionSpecifics* specifics = entity.mutable_session(); |
| specifics->CopyFrom(it->GetSpecifics().session()); |
| DCHECK(specifics->has_tab()); |
| |
| // Update tab node pool with the new association. |
| local_tab_pool_.ReassociateTabNode(tab_delegate.GetSyncId(), new_tab_id); |
| TabLink* tab_link = new TabLink(tab_delegate.GetSyncId(), &tab_delegate); |
| local_tab_map_[new_tab_id] = make_linked_ptr<TabLink>(tab_link); |
| |
| if (specifics->tab().tab_id() == new_tab_id && |
| specifics->tab().window_id() == new_window_id) |
| return; |
| |
| // Either the tab_id or window_id changed (e.g due to session restore), so |
| // update the sync node. |
| specifics->mutable_tab()->set_tab_id(new_tab_id); |
| specifics->mutable_tab()->set_window_id(new_window_id); |
| syncer::SyncData data = syncer::SyncData::CreateLocalData( |
| TabNodePool::TabIdToTag(current_machine_tag_, specifics->tab_node_id()), |
| current_session_name_, entity); |
| change_output->push_back( |
| syncer::SyncChange(FROM_HERE, syncer::SyncChange::ACTION_UPDATE, data)); |
| return; |
| } |
| } |
| |
| // static |
| void SessionsSyncManager::SetSessionTabFromDelegate( |
| const SyncedTabDelegate& tab_delegate, |
| base::Time mtime, |
| sessions::SessionTab* session_tab) { |
| DCHECK(session_tab); |
| session_tab->window_id.set_id(tab_delegate.GetWindowId()); |
| session_tab->tab_id.set_id(tab_delegate.GetSessionId()); |
| session_tab->tab_visual_index = 0; |
| // Use -1 to indicate that the index hasn't been set properly yet. |
| session_tab->current_navigation_index = -1; |
| const SyncedWindowDelegate* window_delegate = |
| synced_window_delegates_getter()->FindById(tab_delegate.GetWindowId()); |
| session_tab->pinned = |
| window_delegate ? window_delegate->IsTabPinned(&tab_delegate) : false; |
| session_tab->extension_app_id = tab_delegate.GetExtensionAppId(); |
| session_tab->user_agent_override.clear(); |
| session_tab->timestamp = mtime; |
| const int current_index = tab_delegate.GetCurrentEntryIndex(); |
| const int min_index = std::max(0, current_index - kMaxSyncNavigationCount); |
| const int max_index = std::min(current_index + kMaxSyncNavigationCount, |
| tab_delegate.GetEntryCount()); |
| bool is_supervised = tab_delegate.ProfileIsSupervised(); |
| session_tab->navigations.clear(); |
| |
| for (int i = min_index; i < max_index; ++i) { |
| if (!tab_delegate.GetVirtualURLAtIndex(i).is_valid()) |
| continue; |
| sessions::SerializedNavigationEntry serialized_entry; |
| tab_delegate.GetSerializedNavigationAtIndex(i, &serialized_entry); |
| |
| // Set current_navigation_index to the index in navigations. |
| if (i == current_index) |
| session_tab->current_navigation_index = session_tab->navigations.size(); |
| |
| session_tab->navigations.push_back(serialized_entry); |
| if (is_supervised) { |
| session_tab->navigations.back().set_blocked_state( |
| SerializedNavigationEntry::STATE_ALLOWED); |
| } |
| } |
| |
| // If the current navigation is invalid, set the index to the end of the |
| // navigation array. |
| if (session_tab->current_navigation_index < 0) { |
| session_tab->current_navigation_index = session_tab->navigations.size() - 1; |
| } |
| |
| if (is_supervised) { |
| int offset = session_tab->navigations.size(); |
| const std::vector<std::unique_ptr<const SerializedNavigationEntry>>& |
| blocked_navigations = *tab_delegate.GetBlockedNavigations(); |
| for (size_t i = 0; i < blocked_navigations.size(); ++i) { |
| session_tab->navigations.push_back(*blocked_navigations[i]); |
| session_tab->navigations.back().set_index(offset + i); |
| session_tab->navigations.back().set_blocked_state( |
| SerializedNavigationEntry::STATE_BLOCKED); |
| // TODO(bauerb): Add categories |
| } |
| } |
| session_tab->session_storage_persistent_id.clear(); |
| } |
| |
| // static |
| void SessionsSyncManager::SetVariationIds(sessions::SessionTab* session_tab) { |
| base::FieldTrial::ActiveGroups active_groups; |
| base::FieldTrialList::GetActiveFieldTrialGroups(&active_groups); |
| for (const base::FieldTrial::ActiveGroup& group : active_groups) { |
| const variations::VariationID id = variations::GetGoogleVariationID( |
| variations::CHROME_SYNC_SERVICE, group.trial_name, group.group_name); |
| if (id != variations::EMPTY_ID) |
| session_tab->variation_ids.push_back(id); |
| } |
| } |
| |
| FaviconCache* SessionsSyncManager::GetFaviconCache() { |
| return &favicon_cache_; |
| } |
| |
| SyncedWindowDelegatesGetter* |
| SessionsSyncManager::synced_window_delegates_getter() const { |
| return sessions_client_->GetSyncedWindowDelegatesGetter(); |
| } |
| |
| void SessionsSyncManager::DoGarbageCollection() { |
| std::vector<const SyncedSession*> sessions; |
| if (!session_tracker_.LookupAllForeignSessions(&sessions, |
| SyncedSessionTracker::RAW)) |
| return; // No foreign sessions. |
| |
| // Iterate through all the sessions and delete any with age older than |
| // |stale_session_threshold_days_|. |
| syncer::SyncChangeList changes; |
| for (const auto* session : sessions) { |
| int session_age_in_days = |
| (base::Time::Now() - session->modified_time).InDays(); |
| if (session_age_in_days > stale_session_threshold_days_) { |
| std::string session_tag = session->session_tag; |
| DVLOG(1) << "Found stale session " << session_tag << " with age " |
| << session_age_in_days << ", deleting."; |
| DeleteForeignSessionInternal(session_tag, &changes); |
| } |
| } |
| |
| if (!changes.empty()) |
| sync_processor_->ProcessSyncChanges(FROM_HERE, changes); |
| } |
| |
| // static |
| std::string SessionsSyncManager::TagHashFromSpecifics( |
| const sync_pb::SessionSpecifics& specifics) { |
| return syncer::GenerateSyncableHash(syncer::SESSIONS, |
| TagFromSpecifics(specifics)); |
| } |
| |
| }; // namespace sync_sessions |
