423 lines
12 KiB
Dart
423 lines
12 KiB
Dart
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/disk_size.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_provider.dart';
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import 'package:selfprivacy/utils/extensions/string_extensions.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 ServerType serverType,
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final bool isAuthotized,
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) : _adapter = ApiAdapter(
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isWithToken: isAuthotized,
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region: serverType.location.identifier,
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);
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ApiAdapter _adapter;
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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<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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String? getEmojiFlag(final String query) {
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String? emoji;
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switch (query.toLowerCase().substring(0, 3)) {
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case 'fra':
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emoji = '🇩🇪';
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break;
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case 'ams':
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emoji = '🇳🇱';
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break;
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case 'sgp':
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emoji = '🇸🇬';
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break;
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case 'lon':
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emoji = '🇬🇧';
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break;
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case 'tor':
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emoji = '🇨🇦';
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break;
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case 'blr':
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emoji = '🇮🇳';
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break;
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case 'nyc':
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case 'sfo':
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emoji = '🇺🇸';
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break;
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}
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return emoji;
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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 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: getEmojiFlag(rawLocation['slug']),
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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 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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final ramMb = rawSize['memory'].toDouble();
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if (rawRegion.toString() == location.identifier && ramMb > 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: ramMb / 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['price_monthly'],
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currency: 'USD',
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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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Future<GenericResult<List<ServerBasicInfo>>> getServers() async {
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final 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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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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Future<GenericResult<List<ServerMetadataEntity>>> getMetadata(
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final int serverId,
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) async {
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List<ServerMetadataEntity> metadata = [];
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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: false,
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data: metadata,
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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 servers = result.data;
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try {
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final droplet = servers.firstWhere(
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(final server) => server['id'] == serverId,
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);
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metadata = [
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ServerMetadataEntity(
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type: MetadataType.id,
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trId: 'server.server_id',
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value: droplet['id'].toString(),
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),
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ServerMetadataEntity(
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type: MetadataType.status,
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trId: 'server.status',
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value: droplet['status'].toString().capitalize(),
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),
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ServerMetadataEntity(
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type: MetadataType.cpu,
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trId: 'server.cpu',
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value: droplet['vcpus'].toString(),
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),
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ServerMetadataEntity(
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type: MetadataType.ram,
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trId: 'server.ram',
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value: "${droplet['memory'].toString()} MB",
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),
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ServerMetadataEntity(
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type: MetadataType.cost,
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trId: 'server.monthly_cost',
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value: droplet['size']['price_monthly'].toString(),
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),
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ServerMetadataEntity(
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type: MetadataType.location,
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trId: 'server.location',
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value:
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'${droplet['region']['name']} ${getEmojiFlag(droplet['region']['slug'].toString()) ?? ''}',
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),
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ServerMetadataEntity(
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type: MetadataType.other,
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trId: 'server.provider',
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value: _adapter.api().displayProviderName,
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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: [],
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message: e.toString(),
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);
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}
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return GenericResult(success: true, data: metadata);
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}
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/// Digital Ocean returns a map of lists of /proc/stat values,
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/// so here we are trying to implement average CPU
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/// load calculation for each point in time on a given interval.
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///
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/// For each point of time:
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///
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/// `Average Load = 100 * (1 - (Idle Load / Total Load))`
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///
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/// For more info please proceed to read:
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/// https://rosettacode.org/wiki/Linux_CPU_utilization
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List<TimeSeriesData> calculateCpuLoadMetrics(final List rawProcStatMetrics) {
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final List<TimeSeriesData> cpuLoads = [];
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final int pointsInTime = (rawProcStatMetrics[0]['values'] as List).length;
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for (int i = 0; i < pointsInTime; ++i) {
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double currentMetricLoad = 0.0;
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double? currentMetricIdle;
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for (final rawProcStat in rawProcStatMetrics) {
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final String rawProcValue = rawProcStat['values'][i][1];
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// Converting MBit into bit
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final double procValue = double.parse(rawProcValue) * 1000000;
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currentMetricLoad += procValue;
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if (currentMetricIdle == null &&
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rawProcStat['metric']['mode'] == 'idle') {
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currentMetricIdle = procValue;
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}
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}
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currentMetricIdle ??= 0.0;
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currentMetricLoad = 100.0 * (1 - (currentMetricIdle / currentMetricLoad));
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cpuLoads.add(
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TimeSeriesData(
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rawProcStatMetrics[0]['values'][i][0],
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currentMetricLoad,
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),
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);
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}
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return cpuLoads;
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}
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@override
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Future<GenericResult<ServerMetrics?>> getMetrics(
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final int serverId,
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final DateTime start,
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final DateTime end,
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) async {
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ServerMetrics? metrics;
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const int step = 15;
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final inboundResult = await _adapter.api().getMetricsBandwidth(
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serverId,
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start,
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end,
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true,
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);
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if (inboundResult.data.isEmpty || !inboundResult.success) {
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return GenericResult(
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success: false,
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data: null,
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code: inboundResult.code,
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message: inboundResult.message,
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);
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}
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final outboundResult = await _adapter.api().getMetricsBandwidth(
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serverId,
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start,
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end,
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false,
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);
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if (outboundResult.data.isEmpty || !outboundResult.success) {
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return GenericResult(
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success: false,
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data: null,
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code: outboundResult.code,
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message: outboundResult.message,
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);
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}
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final cpuResult = await _adapter.api().getMetricsCpu(serverId, start, end);
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if (cpuResult.data.isEmpty || !cpuResult.success) {
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return GenericResult(
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success: false,
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data: null,
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code: cpuResult.code,
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message: cpuResult.message,
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);
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}
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metrics = ServerMetrics(
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bandwidthIn: inboundResult.data
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.map(
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(final el) => TimeSeriesData(el[0], double.parse(el[1]) * 100000),
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)
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.toList(),
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bandwidthOut: outboundResult.data
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.map(
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(final el) => TimeSeriesData(el[0], double.parse(el[1]) * 100000),
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)
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.toList(),
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cpu: calculateCpuLoadMetrics(cpuResult.data),
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start: start,
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end: end,
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stepsInSecond: step,
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);
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return GenericResult(success: true, data: metrics);
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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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}
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