911 lines
26 KiB
Dart
911 lines
26 KiB
Dart
import 'dart:convert';
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import 'package:easy_localization/easy_localization.dart';
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import 'package:selfprivacy/logic/api_maps/rest_maps/server_providers/digital_ocean/digital_ocean_api.dart';
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import 'package:selfprivacy/logic/models/callback_dialogue_branching.dart';
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import 'package:selfprivacy/logic/models/disk_size.dart';
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import 'package:selfprivacy/logic/models/hive/server_details.dart';
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import 'package:selfprivacy/logic/models/json/digital_ocean_server_info.dart';
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import 'package:selfprivacy/logic/models/metrics.dart';
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import 'package:selfprivacy/logic/models/price.dart';
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import 'package:selfprivacy/logic/models/server_basic_info.dart';
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import 'package:selfprivacy/logic/models/server_metadata.dart';
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import 'package:selfprivacy/logic/models/server_provider_location.dart';
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import 'package:selfprivacy/logic/models/server_type.dart';
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import 'package:selfprivacy/logic/providers/server_providers/server_provider.dart';
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import 'package:selfprivacy/utils/extensions/string_extensions.dart';
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import 'package:selfprivacy/utils/network_utils.dart';
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import 'package:selfprivacy/utils/password_generator.dart';
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class ApiAdapter {
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ApiAdapter({final String? region, final bool isWithToken = true})
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: _api = DigitalOceanApi(
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region: region,
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isWithToken: isWithToken,
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);
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DigitalOceanApi api({final bool getInitialized = true}) => getInitialized
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? _api
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: DigitalOceanApi(
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region: _api.region,
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isWithToken: false,
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);
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final DigitalOceanApi _api;
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}
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class DigitalOceanServerProvider extends ServerProvider {
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DigitalOceanServerProvider() : _adapter = ApiAdapter();
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DigitalOceanServerProvider.load(
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final String? location,
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final bool isAuthotized,
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) : _adapter = ApiAdapter(
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isWithToken: isAuthotized,
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region: location,
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);
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ApiAdapter _adapter;
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final Currency currency = Currency.fromType(CurrencyType.usd);
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@override
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ServerProviderType get type => ServerProviderType.digitalOcean;
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@override
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Future<GenericResult<List<ServerBasicInfo>>> getServers() async {
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List<ServerBasicInfo> servers = [];
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final result = await _adapter.api().getServers();
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if (result.data.isEmpty || !result.success) {
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return GenericResult(
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success: result.success,
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data: servers,
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code: result.code,
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message: result.message,
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);
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}
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final List rawServers = result.data;
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servers = rawServers.map<ServerBasicInfo>(
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(final server) {
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String ipv4 = '0.0.0.0';
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if (server['networks']['v4'].isNotEmpty) {
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for (final v4 in server['networks']['v4']) {
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if (v4['type'].toString() == 'public') {
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ipv4 = v4['ip_address'].toString();
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}
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}
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}
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return ServerBasicInfo(
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id: server['id'],
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reverseDns: server['name'],
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created: DateTime.now(),
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ip: ipv4,
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name: server['name'],
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);
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},
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).toList();
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return GenericResult(success: true, data: servers);
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}
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@override
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Future<GenericResult<ServerType?>> getServerType(final int serverId) async {
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ServerType? serverType;
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dynamic server;
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final result = await _adapter.api().getServers();
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if (result.data.isEmpty || !result.success) {
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return GenericResult(
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success: result.success,
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data: serverType,
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code: result.code,
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message: result.message,
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);
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}
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final List rawServers = result.data;
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for (final rawServer in rawServers) {
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if (rawServer['networks']['v4'].isNotEmpty) {
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for (final v4 in rawServer['networks']['v4']) {
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if (v4['type'].toString() == 'public') {
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server = rawServer;
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}
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}
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}
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}
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if (server == null) {
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const String msg = 'getServerType: no server!';
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print(msg);
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return GenericResult(
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success: false,
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data: serverType,
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message: msg,
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);
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}
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final rawLocationsResult = await getAvailableLocations();
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if (rawLocationsResult.data.isEmpty || !rawLocationsResult.success) {
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return GenericResult(
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success: rawLocationsResult.success,
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data: serverType,
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code: rawLocationsResult.code,
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message: rawLocationsResult.message,
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);
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}
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ServerProviderLocation? location;
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for (final rawLocation in rawLocationsResult.data) {
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if (rawLocation.identifier == server['region']['slug']) {
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location = rawLocation;
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}
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}
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if (location == null) {
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const String msg = 'getServerType: no location!';
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print(msg);
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return GenericResult(
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success: false,
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data: serverType,
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message: msg,
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);
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}
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ServerType? type;
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final rawSize = DigitalOceanServerType.fromJson(server['size']);
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for (final rawRegion in rawSize.regions) {
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if (rawRegion == server['region']['slug']) {
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type = ServerType(
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title: rawSize.description,
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identifier: rawSize.slug,
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ram: rawSize.memory / 1024,
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cores: rawSize.vcpus,
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disk: DiskSize(byte: rawSize.disk * 1024 * 1024 * 1024),
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price: Price(
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value: rawSize.priceMonthly,
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currency: currency,
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),
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location: location,
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);
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}
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}
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return GenericResult(
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success: true,
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data: type,
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);
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}
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@override
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Future<GenericResult<CallbackDialogueBranching?>> launchInstallation(
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final LaunchInstallationData installationData,
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) async {
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ServerHostingDetails? serverDetails;
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final serverApiToken = StringGenerators.apiToken();
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final hostname = getHostnameFromDomain(
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installationData.serverDomain.domainName,
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);
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final pastServers = await getServers();
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for (final pastServer in pastServers.data) {
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if (pastServer.name == hostname) {
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return GenericResult(
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data: CallbackDialogueBranching(
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choices: [
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CallbackDialogueChoice(
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title: 'basis.cancel'.tr(),
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callback: () async => installationData.errorCallback(),
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),
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CallbackDialogueChoice(
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title: 'modals.yes'.tr(),
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callback: () async {
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final deleting = await deleteServer(hostname);
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if (deleting.success) {
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await Future.delayed(const Duration(seconds: 20));
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return launchInstallation(installationData);
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}
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return deleting;
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},
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),
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],
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description: 'modals.destroy_server'.tr(),
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title: 'modals.already_exists'.tr(),
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),
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success: false,
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message: 'Droplet "$hostname" already exists.',
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);
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}
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}
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final serverResult = await _adapter.api().createServer(
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dnsApiToken: installationData.dnsApiToken,
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rootUser: installationData.rootUser,
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domainName: installationData.serverDomain.domainName,
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serverType: installationData.serverTypeId,
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dnsProviderType: installationData.dnsProviderType.toInfectName(),
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hostName: hostname,
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base64Password: base64.encode(
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utf8.encode(installationData.rootUser.password ?? 'PASS'),
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),
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databasePassword: StringGenerators.dbPassword(),
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serverApiToken: serverApiToken,
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);
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if (!serverResult.success || serverResult.data == null) {
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GenericResult(
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data: CallbackDialogueBranching(
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choices: [
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CallbackDialogueChoice(
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title: 'basis.cancel'.tr(),
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callback: () async => await installationData.errorCallback(),
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),
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CallbackDialogueChoice(
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title: 'modals.try_again'.tr(),
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callback: () async => launchInstallation(installationData),
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),
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],
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description: serverResult.message ?? 'recovering.generic_error'.tr(),
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title: 'modals.unexpected_error'.tr(),
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),
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success: false,
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message: serverResult.message,
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code: serverResult.code,
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);
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}
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try {
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final int dropletId = serverResult.data!;
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final newVolume =
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(await createVolume(installationData.storageSize.gibibyte.toInt()))
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.data;
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final bool attachedVolume = (await _adapter.api().attachVolume(
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newVolume!.name,
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dropletId,
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))
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.data;
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String? ipv4;
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int attempts = 0;
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while (attempts < 10 && ipv4 == null) {
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await Future.delayed(const Duration(seconds: 20));
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final servers = await getServers();
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for (final server in servers.data) {
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if (server.name == hostname && server.ip != '0.0.0.0') {
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ipv4 = server.ip;
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break;
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}
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}
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++attempts;
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}
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if (attachedVolume && ipv4 != null) {
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serverDetails = ServerHostingDetails(
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id: dropletId,
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ip4: ipv4,
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createTime: DateTime.now(),
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volume: newVolume,
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apiToken: serverApiToken,
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provider: ServerProviderType.digitalOcean,
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);
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}
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} catch (e) {
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return GenericResult(
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success: false,
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data: CallbackDialogueBranching(
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choices: [
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CallbackDialogueChoice(
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title: 'basis.cancel'.tr(),
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callback: null,
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),
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CallbackDialogueChoice(
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title: 'modals.try_again'.tr(),
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callback: () async {
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await Future.delayed(const Duration(seconds: 5));
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final deletion = await deleteServer(hostname);
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return deletion.success
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? await launchInstallation(installationData)
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: deletion;
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},
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),
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],
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description: 'modals.try_again'.tr(),
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title: 'modals.server_deletion_error'.tr(),
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),
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message: e.toString(),
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);
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}
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await installationData.successCallback(serverDetails!);
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return GenericResult(success: true, data: null);
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}
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@override
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Future<GenericResult<CallbackDialogueBranching?>> deleteServer(
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final String hostname,
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) async {
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final String deletionName = getHostnameFromDomain(hostname);
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final serversResult = await getServers();
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try {
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final servers = serversResult.data;
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ServerBasicInfo? foundServer;
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for (final server in servers) {
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if (server.name == deletionName) {
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foundServer = server;
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break;
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}
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}
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final volumes = await getVolumes();
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final ServerVolume volumeToRemove;
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volumeToRemove = volumes.data.firstWhere(
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(final el) => el.serverId == foundServer!.id,
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);
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await _adapter.api().detachVolume(
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volumeToRemove.name,
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volumeToRemove.serverId!,
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);
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await Future.delayed(const Duration(seconds: 10));
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final List<Future> laterFutures = <Future>[];
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laterFutures.add(_adapter.api().deleteVolume(volumeToRemove.uuid!));
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laterFutures.add(_adapter.api().deleteServer(foundServer!.id));
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await Future.wait(laterFutures);
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} catch (e) {
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print(e);
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return GenericResult(
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success: false,
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data: CallbackDialogueBranching(
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choices: [
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CallbackDialogueChoice(
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title: 'basis.cancel'.tr(),
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callback: null,
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),
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CallbackDialogueChoice(
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title: 'modals.try_again'.tr(),
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callback: () async {
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await Future.delayed(const Duration(seconds: 5));
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return deleteServer(hostname);
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},
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),
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],
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description: 'modals.try_again'.tr(),
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title: 'modals.server_deletion_error'.tr(),
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),
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message: e.toString(),
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);
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}
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return GenericResult(
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success: true,
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data: null,
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);
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}
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@override
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Future<GenericResult<bool>> tryInitApiByToken(final String token) async {
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final api = _adapter.api(getInitialized: false);
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final result = await api.isApiTokenValid(token);
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if (!result.data || !result.success) {
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return result;
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}
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_adapter = ApiAdapter(region: api.region, isWithToken: true);
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return result;
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}
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@override
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Future<GenericResult<bool>> trySetServerLocation(
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final String location,
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) async {
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final bool apiInitialized = _adapter.api().isWithToken;
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if (!apiInitialized) {
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return GenericResult(
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success: true,
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data: false,
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message: 'Not authorized!',
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);
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}
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_adapter = ApiAdapter(
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isWithToken: true,
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region: location,
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);
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return success;
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}
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@override
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Future<GenericResult<List<ServerProviderLocation>>>
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getAvailableLocations() async {
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final List<ServerProviderLocation> locations = [];
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final result = await _adapter.api().getAvailableLocations();
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if (result.data.isEmpty || !result.success) {
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return GenericResult(
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success: result.success,
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data: locations,
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code: result.code,
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message: result.message,
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);
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}
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final List<DigitalOceanLocation> rawLocations = result.data;
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for (final rawLocation in rawLocations) {
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ServerProviderLocation? location;
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try {
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location = ServerProviderLocation(
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title: rawLocation.slug,
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description: rawLocation.name,
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flag: rawLocation.flag,
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identifier: rawLocation.slug,
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);
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} catch (e) {
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continue;
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}
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locations.add(location);
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}
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return GenericResult(success: true, data: locations);
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}
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@override
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Future<GenericResult<List<ServerType>>> getServerTypes({
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required final ServerProviderLocation location,
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}) async {
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final List<ServerType> types = [];
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final result = await _adapter.api().getAvailableServerTypes();
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if (result.data.isEmpty || !result.success) {
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return GenericResult(
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success: result.success,
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data: types,
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code: result.code,
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message: result.message,
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);
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}
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final List<DigitalOceanServerType> rawSizes = result.data;
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for (final rawSize in rawSizes) {
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for (final rawRegion in rawSize.regions) {
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if (rawRegion == location.identifier && rawSize.memory > 1024) {
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types.add(
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ServerType(
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title: rawSize.description,
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identifier: rawSize.slug,
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ram: rawSize.memory / 1024,
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cores: rawSize.vcpus,
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disk: DiskSize(byte: rawSize.disk * 1024 * 1024 * 1024),
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price: Price(
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value: rawSize.priceMonthly,
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currency: currency,
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),
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location: location,
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),
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);
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}
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}
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}
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return GenericResult(success: true, data: types);
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}
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@override
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Future<GenericResult<DateTime?>> powerOn(final int serverId) async {
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DateTime? timestamp;
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final result = await _adapter.api().powerOn(serverId);
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if (!result.success) {
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return GenericResult(
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success: false,
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data: timestamp,
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code: result.code,
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message: result.message,
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);
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}
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timestamp = DateTime.now();
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return GenericResult(
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success: true,
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data: timestamp,
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);
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}
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@override
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Future<GenericResult<DateTime?>> restart(final int serverId) async {
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DateTime? timestamp;
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final result = await _adapter.api().restart(serverId);
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if (!result.success) {
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return GenericResult(
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success: false,
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data: timestamp,
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code: result.code,
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message: result.message,
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);
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}
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timestamp = DateTime.now();
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return GenericResult(
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success: true,
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data: timestamp,
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);
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}
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@override
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Future<GenericResult<AdditionalPricing?>> getAdditionalPricing() async =>
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GenericResult(
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success: true,
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data: AdditionalPricing(
|
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perVolumeGb: Price(
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/// Hardcoded in their documentation and there is no pricing API
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value: 0.10,
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currency: currency,
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),
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perPublicIpv4: Price(
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value: 0,
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currency: currency,
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),
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),
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);
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@override
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Future<GenericResult<List<ServerVolume>>> getVolumes({
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final String? status,
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}) async {
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final List<ServerVolume> volumes = [];
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final result = await _adapter.api().getVolumes();
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if (!result.success || result.data.isEmpty) {
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return GenericResult(
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data: [],
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success: false,
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code: result.code,
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message: result.message,
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);
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}
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try {
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int id = 0;
|
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for (final rawVolume in result.data) {
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final String volumeName = rawVolume.name;
|
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final volume = ServerVolume(
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id: id++,
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name: volumeName,
|
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sizeByte: rawVolume.sizeGigabytes * 1024 * 1024 * 1024,
|
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serverId:
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(rawVolume.dropletIds != null && rawVolume.dropletIds!.isNotEmpty)
|
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? rawVolume.dropletIds![0]
|
|
: null,
|
|
linuxDevice: 'scsi-0DO_Volume_$volumeName',
|
|
uuid: rawVolume.id,
|
|
);
|
|
volumes.add(volume);
|
|
}
|
|
} catch (e) {
|
|
print(e);
|
|
return GenericResult(
|
|
data: [],
|
|
success: false,
|
|
message: e.toString(),
|
|
);
|
|
}
|
|
|
|
return GenericResult(
|
|
data: volumes,
|
|
success: true,
|
|
);
|
|
}
|
|
|
|
@override
|
|
Future<GenericResult<ServerVolume?>> createVolume(final int gb) async {
|
|
ServerVolume? volume;
|
|
|
|
final result = await _adapter.api().createVolume(gb);
|
|
|
|
if (!result.success || result.data == null) {
|
|
return GenericResult(
|
|
data: null,
|
|
success: false,
|
|
code: result.code,
|
|
message: result.message,
|
|
);
|
|
}
|
|
|
|
final getVolumesResult = await _adapter.api().getVolumes();
|
|
|
|
if (!getVolumesResult.success || getVolumesResult.data.isEmpty) {
|
|
return GenericResult(
|
|
data: null,
|
|
success: false,
|
|
code: result.code,
|
|
message: result.message,
|
|
);
|
|
}
|
|
|
|
final String volumeName = result.data!.name;
|
|
volume = ServerVolume(
|
|
id: getVolumesResult.data.length,
|
|
name: volumeName,
|
|
sizeByte: result.data!.sizeGigabytes,
|
|
serverId: null,
|
|
linuxDevice: '/dev/disk/by-id/scsi-0DO_Volume_$volumeName',
|
|
uuid: result.data!.id,
|
|
);
|
|
|
|
return GenericResult(
|
|
data: volume,
|
|
success: true,
|
|
);
|
|
}
|
|
|
|
Future<GenericResult<ServerVolume?>> getVolume(
|
|
final String volumeUuid,
|
|
) async {
|
|
ServerVolume? requestedVolume;
|
|
|
|
final result = await getVolumes();
|
|
|
|
if (!result.success || result.data.isEmpty) {
|
|
return GenericResult(
|
|
data: null,
|
|
success: false,
|
|
code: result.code,
|
|
message: result.message,
|
|
);
|
|
}
|
|
|
|
for (final volume in result.data) {
|
|
if (volume.uuid == volumeUuid) {
|
|
requestedVolume = volume;
|
|
}
|
|
}
|
|
|
|
return GenericResult(
|
|
data: requestedVolume,
|
|
success: true,
|
|
);
|
|
}
|
|
|
|
@override
|
|
Future<GenericResult<bool>> attachVolume(
|
|
final ServerVolume volume,
|
|
final int serverId,
|
|
) async =>
|
|
_adapter.api().attachVolume(
|
|
volume.name,
|
|
serverId,
|
|
);
|
|
|
|
@override
|
|
Future<GenericResult<bool>> detachVolume(
|
|
final ServerVolume volume,
|
|
) async =>
|
|
_adapter.api().detachVolume(
|
|
volume.name,
|
|
volume.serverId!,
|
|
);
|
|
|
|
@override
|
|
Future<GenericResult<void>> deleteVolume(
|
|
final ServerVolume volume,
|
|
) async =>
|
|
_adapter.api().deleteVolume(
|
|
volume.uuid!,
|
|
);
|
|
|
|
@override
|
|
Future<GenericResult<bool>> resizeVolume(
|
|
final ServerVolume volume,
|
|
final DiskSize size,
|
|
) async =>
|
|
_adapter.api().resizeVolume(
|
|
volume.name,
|
|
size,
|
|
);
|
|
|
|
@override
|
|
Future<GenericResult<List<ServerMetadataEntity>>> getMetadata(
|
|
final int serverId,
|
|
) async {
|
|
List<ServerMetadataEntity> metadata = [];
|
|
final result = await _adapter.api().getServers();
|
|
if (result.data.isEmpty || !result.success) {
|
|
return GenericResult(
|
|
success: false,
|
|
data: metadata,
|
|
code: result.code,
|
|
message: result.message,
|
|
);
|
|
}
|
|
final resultVolumes = await _adapter.api().getVolumes();
|
|
if (resultVolumes.data.isEmpty || !resultVolumes.success) {
|
|
return GenericResult(
|
|
success: false,
|
|
data: metadata,
|
|
code: resultVolumes.code,
|
|
message: resultVolumes.message,
|
|
);
|
|
}
|
|
final resultPricePerGb = await getAdditionalPricing();
|
|
if (resultPricePerGb.data == null || !resultPricePerGb.success) {
|
|
return GenericResult(
|
|
success: false,
|
|
data: metadata,
|
|
code: resultPricePerGb.code,
|
|
message: resultPricePerGb.message,
|
|
);
|
|
}
|
|
|
|
final List servers = result.data;
|
|
final List<DigitalOceanVolume> volumes = resultVolumes.data;
|
|
try {
|
|
final Price pricePerGb = resultPricePerGb.data!.perVolumeGb;
|
|
final droplet = servers.firstWhere(
|
|
(final server) => server['id'] == serverId,
|
|
);
|
|
|
|
final volume = volumes.firstWhere(
|
|
(final volume) => droplet['volume_ids'].contains(volume.id),
|
|
);
|
|
|
|
metadata = [
|
|
ServerMetadataEntity(
|
|
type: MetadataType.id,
|
|
trId: 'server.server_id',
|
|
value: droplet['id'].toString(),
|
|
),
|
|
ServerMetadataEntity(
|
|
type: MetadataType.status,
|
|
trId: 'server.status',
|
|
value: droplet['status'].toString().capitalize(),
|
|
),
|
|
ServerMetadataEntity(
|
|
type: MetadataType.cpu,
|
|
trId: 'server.cpu',
|
|
value: droplet['vcpus'].toString(),
|
|
),
|
|
ServerMetadataEntity(
|
|
type: MetadataType.ram,
|
|
trId: 'server.ram',
|
|
value: "${droplet['memory'].toString()} MB",
|
|
),
|
|
ServerMetadataEntity(
|
|
type: MetadataType.cost,
|
|
trId: 'server.monthly_cost',
|
|
value:
|
|
'${droplet['size']['price_monthly']} + ${(volume.sizeGigabytes * pricePerGb.value).toStringAsFixed(2)} ${currency.shortcode}',
|
|
),
|
|
ServerMetadataEntity(
|
|
type: MetadataType.location,
|
|
trId: 'server.location',
|
|
value: '${droplet['region']['name']}',
|
|
),
|
|
ServerMetadataEntity(
|
|
type: MetadataType.other,
|
|
trId: 'server.server_provider',
|
|
value: type.displayName,
|
|
),
|
|
];
|
|
} catch (e) {
|
|
return GenericResult(
|
|
success: false,
|
|
data: [],
|
|
message: e.toString(),
|
|
);
|
|
}
|
|
|
|
return GenericResult(success: true, data: metadata);
|
|
}
|
|
|
|
/// Digital Ocean returns a map of lists of /proc/stat values,
|
|
/// so here we are trying to implement average CPU
|
|
/// load calculation for each point in time on a given interval.
|
|
///
|
|
/// For each point of time:
|
|
///
|
|
/// `Average Load = 100 * (1 - (Idle Load / Total Load))`
|
|
///
|
|
/// For more info please proceed to read:
|
|
/// https://rosettacode.org/wiki/Linux_CPU_utilization
|
|
List<TimeSeriesData> calculateCpuLoadMetrics(final List rawProcStatMetrics) {
|
|
final List<TimeSeriesData> cpuLoads = [];
|
|
|
|
final int pointsInTime = (rawProcStatMetrics[0]['values'] as List).length;
|
|
for (int i = 0; i < pointsInTime; ++i) {
|
|
double currentMetricLoad = 0.0;
|
|
double? currentMetricIdle;
|
|
for (final rawProcStat in rawProcStatMetrics) {
|
|
final String rawProcValue = rawProcStat['values'][i][1];
|
|
// Converting MBit into bit
|
|
final double procValue = double.parse(rawProcValue) * 1000000;
|
|
currentMetricLoad += procValue;
|
|
if (currentMetricIdle == null &&
|
|
rawProcStat['metric']['mode'] == 'idle') {
|
|
currentMetricIdle = procValue;
|
|
}
|
|
}
|
|
currentMetricIdle ??= 0.0;
|
|
currentMetricLoad = 100.0 * (1 - (currentMetricIdle / currentMetricLoad));
|
|
cpuLoads.add(
|
|
TimeSeriesData(
|
|
rawProcStatMetrics[0]['values'][i][0],
|
|
currentMetricLoad,
|
|
),
|
|
);
|
|
}
|
|
|
|
return cpuLoads;
|
|
}
|
|
|
|
@override
|
|
Future<GenericResult<ServerMetrics?>> getMetrics(
|
|
final int serverId,
|
|
final DateTime start,
|
|
final DateTime end,
|
|
) async {
|
|
ServerMetrics? metrics;
|
|
|
|
const int step = 15;
|
|
final inboundResult = await _adapter.api().getMetricsBandwidth(
|
|
serverId,
|
|
start,
|
|
end,
|
|
true,
|
|
);
|
|
|
|
if (inboundResult.data.isEmpty || !inboundResult.success) {
|
|
return GenericResult(
|
|
success: false,
|
|
data: null,
|
|
code: inboundResult.code,
|
|
message: inboundResult.message,
|
|
);
|
|
}
|
|
|
|
final outboundResult = await _adapter.api().getMetricsBandwidth(
|
|
serverId,
|
|
start,
|
|
end,
|
|
false,
|
|
);
|
|
|
|
if (outboundResult.data.isEmpty || !outboundResult.success) {
|
|
return GenericResult(
|
|
success: false,
|
|
data: null,
|
|
code: outboundResult.code,
|
|
message: outboundResult.message,
|
|
);
|
|
}
|
|
|
|
final cpuResult = await _adapter.api().getMetricsCpu(serverId, start, end);
|
|
|
|
if (cpuResult.data.isEmpty || !cpuResult.success) {
|
|
return GenericResult(
|
|
success: false,
|
|
data: null,
|
|
code: cpuResult.code,
|
|
message: cpuResult.message,
|
|
);
|
|
}
|
|
|
|
metrics = ServerMetrics(
|
|
bandwidthIn: inboundResult.data
|
|
.map(
|
|
(final el) => TimeSeriesData(el[0], double.parse(el[1]) * 100000),
|
|
)
|
|
.toList(),
|
|
bandwidthOut: outboundResult.data
|
|
.map(
|
|
(final el) => TimeSeriesData(el[0], double.parse(el[1]) * 100000),
|
|
)
|
|
.toList(),
|
|
cpu: calculateCpuLoadMetrics(cpuResult.data),
|
|
start: start,
|
|
end: end,
|
|
stepsInSecond: step,
|
|
);
|
|
|
|
return GenericResult(success: true, data: metrics);
|
|
}
|
|
}
|