| // 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/device_info/device_info_sync_service.h" |
| |
| #include <stddef.h> |
| |
| #include <algorithm> |
| #include <utility> |
| |
| #include "base/memory/ptr_util.h" |
| #include "base/time/time.h" |
| #include "components/sync/api/sync_change.h" |
| #include "components/sync/base/time.h" |
| #include "components/sync/device_info/device_info_util.h" |
| #include "components/sync/device_info/local_device_info_provider.h" |
| #include "components/sync/protocol/sync.pb.h" |
| |
| namespace sync_driver { |
| |
| using base::Time; |
| using base::TimeDelta; |
| using syncer::ModelType; |
| using syncer::SyncChange; |
| using syncer::SyncChangeList; |
| using syncer::SyncChangeProcessor; |
| using syncer::SyncData; |
| using syncer::SyncDataList; |
| using syncer::SyncErrorFactory; |
| using syncer::SyncMergeResult; |
| |
| DeviceInfoSyncService::DeviceInfoSyncService( |
| LocalDeviceInfoProvider* local_device_info_provider) |
| : local_device_info_provider_(local_device_info_provider) { |
| DCHECK(local_device_info_provider); |
| } |
| |
| DeviceInfoSyncService::~DeviceInfoSyncService() {} |
| |
| SyncMergeResult DeviceInfoSyncService::MergeDataAndStartSyncing( |
| ModelType type, |
| const SyncDataList& initial_sync_data, |
| std::unique_ptr<SyncChangeProcessor> sync_processor, |
| std::unique_ptr<SyncErrorFactory> error_handler) { |
| DCHECK(sync_processor.get()); |
| DCHECK(error_handler.get()); |
| DCHECK_EQ(type, syncer::DEVICE_INFO); |
| |
| DCHECK(!IsSyncing()); |
| |
| sync_processor_ = std::move(sync_processor); |
| error_handler_ = std::move(error_handler); |
| |
| // Initialization should be completed before this type is enabled |
| // and local device info must be available. |
| const DeviceInfo* local_device_info = |
| local_device_info_provider_->GetLocalDeviceInfo(); |
| DCHECK(local_device_info != NULL); |
| |
| // Indicates whether a local device has been added or updated. |
| // |change_type| defaults to ADD and might be changed to |
| // UPDATE to INVALID down below if the initial data contains |
| // data matching the local device ID. |
| SyncChange::SyncChangeType change_type = SyncChange::ACTION_ADD; |
| TimeDelta pulse_delay; |
| size_t num_items_new = 0; |
| size_t num_items_updated = 0; |
| |
| // Iterate over all initial sync data and copy it to the cache. |
| for (SyncDataList::const_iterator iter = initial_sync_data.begin(); |
| iter != initial_sync_data.end(); ++iter) { |
| DCHECK_EQ(syncer::DEVICE_INFO, iter->GetDataType()); |
| |
| const std::string& id = iter->GetSpecifics().device_info().cache_guid(); |
| |
| if (id == local_device_info->guid()) { |
| // |initial_sync_data| contains data matching the local device. |
| std::unique_ptr<DeviceInfo> synced_local_device_info = |
| base::WrapUnique(CreateDeviceInfo(*iter)); |
| |
| pulse_delay = DeviceInfoUtil::CalculatePulseDelay( |
| GetLastUpdateTime(*iter), Time::Now()); |
| // Store the synced device info for the local device only if |
| // it is the same as the local info. Otherwise store the local |
| // device info and issue a change further below after finishing |
| // processing the |initial_sync_data|. |
| if (synced_local_device_info->Equals(*local_device_info) && |
| !pulse_delay.is_zero()) { |
| change_type = SyncChange::ACTION_INVALID; |
| } else { |
| num_items_updated++; |
| change_type = SyncChange::ACTION_UPDATE; |
| continue; |
| } |
| } else { |
| // A new device that doesn't match the local device. |
| num_items_new++; |
| } |
| |
| StoreSyncData(id, *iter); |
| } |
| |
| syncer::SyncMergeResult result(type); |
| |
| // If the SyncData for the local device is new or different then send it |
| // immediately, otherwise wait until the pulse interval has elapsed from the |
| // previous update. Regardless of the branch here we setup a timer loop with |
| // SendLocalData such that we continue pulsing every interval. |
| if (change_type == SyncChange::ACTION_INVALID) { |
| pulse_timer_.Start( |
| FROM_HERE, pulse_delay, |
| base::Bind(&DeviceInfoSyncService::SendLocalData, |
| base::Unretained(this), SyncChange::ACTION_UPDATE)); |
| } else { |
| SendLocalData(change_type); |
| } |
| |
| result.set_num_items_before_association(1); |
| result.set_num_items_after_association(all_data_.size()); |
| result.set_num_items_added(num_items_new); |
| result.set_num_items_modified(num_items_updated); |
| result.set_num_items_deleted(0); |
| |
| NotifyObservers(); |
| |
| return result; |
| } |
| |
| bool DeviceInfoSyncService::IsSyncing() const { |
| return !all_data_.empty(); |
| } |
| |
| void DeviceInfoSyncService::StopSyncing(syncer::ModelType type) { |
| bool was_syncing = IsSyncing(); |
| |
| pulse_timer_.Stop(); |
| all_data_.clear(); |
| sync_processor_.reset(); |
| error_handler_.reset(); |
| |
| if (was_syncing) { |
| NotifyObservers(); |
| } |
| } |
| |
| SyncDataList DeviceInfoSyncService::GetAllSyncData( |
| syncer::ModelType type) const { |
| SyncDataList list; |
| |
| for (SyncDataMap::const_iterator iter = all_data_.begin(); |
| iter != all_data_.end(); ++iter) { |
| list.push_back(iter->second); |
| } |
| |
| return list; |
| } |
| |
| syncer::SyncError DeviceInfoSyncService::ProcessSyncChanges( |
| const tracked_objects::Location& from_here, |
| const SyncChangeList& change_list) { |
| syncer::SyncError error; |
| |
| DCHECK(local_device_info_provider_->GetLocalDeviceInfo()); |
| const std::string& local_device_id = |
| local_device_info_provider_->GetLocalDeviceInfo()->guid(); |
| |
| bool has_changes = false; |
| |
| // Iterate over all chanages and merge entries. |
| for (SyncChangeList::const_iterator iter = change_list.begin(); |
| iter != change_list.end(); ++iter) { |
| const SyncData& sync_data = iter->sync_data(); |
| DCHECK_EQ(syncer::DEVICE_INFO, sync_data.GetDataType()); |
| |
| const std::string& client_id = |
| sync_data.GetSpecifics().device_info().cache_guid(); |
| // Ignore device info matching the local device. |
| if (local_device_id == client_id) { |
| DVLOG(1) << "Ignoring sync changes for the local DEVICE_INFO"; |
| continue; |
| } |
| |
| if (iter->change_type() == syncer::SyncChange::ACTION_DELETE) { |
| has_changes = true; |
| DeleteSyncData(client_id); |
| } else if (iter->change_type() == syncer::SyncChange::ACTION_UPDATE || |
| iter->change_type() == syncer::SyncChange::ACTION_ADD) { |
| has_changes = true; |
| StoreSyncData(client_id, sync_data); |
| } else { |
| error.Reset(FROM_HERE, "Invalid action received.", syncer::DEVICE_INFO); |
| } |
| } |
| |
| if (has_changes) { |
| NotifyObservers(); |
| } |
| |
| return error; |
| } |
| |
| std::unique_ptr<DeviceInfo> DeviceInfoSyncService::GetDeviceInfo( |
| const std::string& client_id) const { |
| SyncDataMap::const_iterator iter = all_data_.find(client_id); |
| if (iter == all_data_.end()) { |
| return std::unique_ptr<DeviceInfo>(); |
| } |
| |
| return base::WrapUnique(CreateDeviceInfo(iter->second)); |
| } |
| |
| std::vector<std::unique_ptr<DeviceInfo>> |
| DeviceInfoSyncService::GetAllDeviceInfo() const { |
| std::vector<std::unique_ptr<DeviceInfo>> list; |
| |
| for (SyncDataMap::const_iterator iter = all_data_.begin(); |
| iter != all_data_.end(); ++iter) { |
| list.push_back(base::WrapUnique(CreateDeviceInfo(iter->second))); |
| } |
| |
| return list; |
| } |
| |
| void DeviceInfoSyncService::AddObserver(Observer* observer) { |
| observers_.AddObserver(observer); |
| } |
| |
| void DeviceInfoSyncService::RemoveObserver(Observer* observer) { |
| observers_.RemoveObserver(observer); |
| } |
| |
| int DeviceInfoSyncService::CountActiveDevices() const { |
| return CountActiveDevices(Time::Now()); |
| } |
| |
| void DeviceInfoSyncService::NotifyObservers() { |
| FOR_EACH_OBSERVER(Observer, observers_, OnDeviceInfoChange()); |
| } |
| |
| SyncData DeviceInfoSyncService::CreateLocalData(const DeviceInfo* info) { |
| sync_pb::EntitySpecifics entity; |
| sync_pb::DeviceInfoSpecifics& specifics = *entity.mutable_device_info(); |
| |
| specifics.set_cache_guid(info->guid()); |
| specifics.set_client_name(info->client_name()); |
| specifics.set_chrome_version(info->chrome_version()); |
| specifics.set_sync_user_agent(info->sync_user_agent()); |
| specifics.set_device_type(info->device_type()); |
| specifics.set_signin_scoped_device_id(info->signin_scoped_device_id()); |
| specifics.set_last_updated_timestamp(syncer::TimeToProtoTime(Time::Now())); |
| |
| return CreateLocalData(entity); |
| } |
| |
| SyncData DeviceInfoSyncService::CreateLocalData( |
| const sync_pb::EntitySpecifics& entity) { |
| const sync_pb::DeviceInfoSpecifics& specifics = entity.device_info(); |
| return SyncData::CreateLocalData(DeviceInfoUtil::SpecificsToTag(specifics), |
| specifics.client_name(), entity); |
| } |
| |
| DeviceInfo* DeviceInfoSyncService::CreateDeviceInfo( |
| const syncer::SyncData& sync_data) { |
| const sync_pb::DeviceInfoSpecifics& specifics = |
| sync_data.GetSpecifics().device_info(); |
| |
| return new DeviceInfo(specifics.cache_guid(), specifics.client_name(), |
| specifics.chrome_version(), specifics.sync_user_agent(), |
| specifics.device_type(), |
| specifics.signin_scoped_device_id()); |
| } |
| |
| void DeviceInfoSyncService::StoreSyncData(const std::string& client_id, |
| const SyncData& sync_data) { |
| DVLOG(1) << "Storing DEVICE_INFO for " |
| << sync_data.GetSpecifics().device_info().client_name() |
| << " with ID " << client_id; |
| all_data_[client_id] = sync_data; |
| } |
| |
| void DeviceInfoSyncService::DeleteSyncData(const std::string& client_id) { |
| SyncDataMap::iterator iter = all_data_.find(client_id); |
| if (iter != all_data_.end()) { |
| DVLOG(1) << "Deleting DEVICE_INFO for " |
| << iter->second.GetSpecifics().device_info().client_name() |
| << " with ID " << client_id; |
| all_data_.erase(iter); |
| } |
| } |
| |
| void DeviceInfoSyncService::SendLocalData( |
| const SyncChange::SyncChangeType change_type) { |
| DCHECK_NE(change_type, SyncChange::ACTION_INVALID); |
| DCHECK(sync_processor_); |
| |
| const DeviceInfo* device_info = |
| local_device_info_provider_->GetLocalDeviceInfo(); |
| const SyncData& data = CreateLocalData(device_info); |
| StoreSyncData(device_info->guid(), data); |
| |
| SyncChangeList change_list; |
| change_list.push_back(SyncChange(FROM_HERE, change_type, data)); |
| sync_processor_->ProcessSyncChanges(FROM_HERE, change_list); |
| |
| pulse_timer_.Start( |
| FROM_HERE, DeviceInfoUtil::kPulseInterval, |
| base::Bind(&DeviceInfoSyncService::SendLocalData, base::Unretained(this), |
| SyncChange::ACTION_UPDATE)); |
| } |
| |
| int DeviceInfoSyncService::CountActiveDevices(const Time now) const { |
| return std::count_if(all_data_.begin(), all_data_.end(), |
| [now](SyncDataMap::const_reference pair) { |
| return DeviceInfoUtil::IsActive( |
| GetLastUpdateTime(pair.second), now); |
| }); |
| } |
| |
| // static |
| Time DeviceInfoSyncService::GetLastUpdateTime(const SyncData& device_info) { |
| if (device_info.GetSpecifics().device_info().has_last_updated_timestamp()) { |
| return syncer::ProtoTimeToTime( |
| device_info.GetSpecifics().device_info().last_updated_timestamp()); |
| } else if (!device_info.IsLocal()) { |
| // If there is no |last_updated_timestamp| present, fallback to mod time. |
| return syncer::SyncDataRemote(device_info).GetModifiedTime(); |
| } else { |
| // We shouldn't reach this point for remote data, so this means we're likely |
| // looking at the local device info. Using a long ago time is perfect, since |
| // the desired behavior is to update/pulse our data as soon as possible. |
| return Time(); |
| } |
| } |
| |
| } // namespace sync_driver |