selfprivacy.org.app/lib/logic/providers/server_providers/hetzner.dart

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import 'dart:convert';
import 'package:easy_localization/easy_localization.dart';
import 'package:selfprivacy/logic/api_maps/rest_maps/server_providers/hetzner/hetzner_api.dart';
import 'package:selfprivacy/logic/models/callback_dialogue_branching.dart';
import 'package:selfprivacy/logic/models/disk_size.dart';
import 'package:selfprivacy/logic/models/hive/server_details.dart';
import 'package:selfprivacy/logic/models/hive/server_domain.dart';
import 'package:selfprivacy/logic/models/json/hetzner_server_info.dart';
import 'package:selfprivacy/logic/models/launch_installation_data.dart';
import 'package:selfprivacy/logic/models/metrics.dart';
import 'package:selfprivacy/logic/models/price.dart';
import 'package:selfprivacy/logic/models/server_basic_info.dart';
import 'package:selfprivacy/logic/models/server_metadata.dart';
import 'package:selfprivacy/logic/models/server_provider_location.dart';
import 'package:selfprivacy/logic/models/server_type.dart';
import 'package:selfprivacy/logic/providers/server_provider.dart';
import 'package:selfprivacy/utils/extensions/string_extensions.dart';
import 'package:selfprivacy/utils/network_utils.dart';
import 'package:selfprivacy/utils/password_generator.dart';
class ApiAdapter {
ApiAdapter({final String? region, final bool isWithToken = true})
: _api = HetznerApi(
region: region,
isWithToken: isWithToken,
);
HetznerApi api({final bool getInitialized = true}) => getInitialized
? _api
: HetznerApi(
region: _api.region,
isWithToken: false,
);
final HetznerApi _api;
}
class HetznerServerProvider extends ServerProvider {
HetznerServerProvider() : _adapter = ApiAdapter();
HetznerServerProvider.load(
final ServerType serverType,
final bool isAuthotized,
) : _adapter = ApiAdapter(
isWithToken: isAuthotized,
region: serverType.location.identifier,
);
ApiAdapter _adapter;
@override
Future<GenericResult<bool>> trySetServerLocation(
final String location,
) async {
final bool apiInitialized = _adapter.api().isWithToken;
if (!apiInitialized) {
return GenericResult(
success: true,
data: false,
message: 'Not authorized!',
);
}
_adapter = ApiAdapter(
isWithToken: true,
region: location,
);
return success;
}
@override
Future<GenericResult<bool>> tryInitApiByToken(final String token) async {
final api = _adapter.api(getInitialized: false);
final result = await api.isApiTokenValid(token);
if (!result.data || !result.success) {
return result;
}
_adapter = ApiAdapter(region: api.region, isWithToken: true);
return result;
}
String? getEmojiFlag(final String query) {
String? emoji;
switch (query.toLowerCase()) {
case 'de':
emoji = '🇩🇪';
break;
case 'fi':
emoji = '🇫🇮';
break;
case 'us':
emoji = '🇺🇸';
break;
}
return emoji;
}
@override
Future<GenericResult<List<ServerProviderLocation>>>
getAvailableLocations() async {
final List<ServerProviderLocation> locations = [];
final result = await _adapter.api().getAvailableLocations();
if (result.data.isEmpty || !result.success) {
return GenericResult(
success: result.success,
data: locations,
code: result.code,
message: result.message,
);
}
final List rawLocations = result.data;
for (final rawLocation in rawLocations) {
ServerProviderLocation? location;
try {
location = ServerProviderLocation(
title: rawLocation['city'],
description: rawLocation['description'],
flag: getEmojiFlag(rawLocation['country']),
identifier: rawLocation['name'],
);
} catch (e) {
continue;
}
locations.add(location);
}
return GenericResult(success: true, data: locations);
}
@override
Future<GenericResult<List<ServerType>>> getServerTypes({
required final ServerProviderLocation location,
}) async {
final List<ServerType> types = [];
final result = await _adapter.api().getAvailableServerTypes();
if (result.data.isEmpty || !result.success) {
return GenericResult(
success: result.success,
data: types,
code: result.code,
message: result.message,
);
}
final List rawTypes = result.data;
for (final rawType in rawTypes) {
for (final rawPrice in rawType['prices']) {
if (rawPrice['location'].toString() == location.identifier) {
types.add(
ServerType(
title: rawType['description'],
identifier: rawType['name'],
ram: rawType['memory'],
cores: rawType['cores'],
disk: DiskSize(byte: rawType['disk'] * 1024 * 1024 * 1024),
price: Price(
value: double.parse(rawPrice['price_monthly']['gross']),
currency: 'EUR',
),
location: location,
),
);
}
}
}
return GenericResult(success: true, data: types);
}
Future<GenericResult<List<ServerBasicInfo>>> getServers() async {
final List<ServerBasicInfo> servers = [];
final result = await _adapter.api().getServers();
if (result.data.isEmpty || !result.success) {
return GenericResult(
success: result.success,
data: servers,
code: result.code,
message: result.message,
);
}
final List<HetznerServerInfo> hetznerServers = result.data;
for (final hetznerServer in hetznerServers) {
if (hetznerServer.publicNet.ipv4 == null) {
continue;
}
ServerBasicInfo? server;
try {
server = ServerBasicInfo(
id: hetznerServer.id,
name: hetznerServer.name,
ip: hetznerServer.publicNet.ipv4!.ip,
reverseDns: hetznerServer.publicNet.ipv4!.reverseDns,
created: hetznerServer.created,
);
} catch (e) {
continue;
}
servers.add(server);
}
return GenericResult(success: true, data: servers);
}
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 List<HetznerServerInfo> servers = result.data;
try {
final HetznerServerInfo server = servers.firstWhere(
(final server) => server.id == serverId,
);
metadata = [
ServerMetadataEntity(
type: MetadataType.id,
trId: 'server.server_id',
value: server.id.toString(),
),
ServerMetadataEntity(
type: MetadataType.status,
trId: 'server.status',
value: server.status.toString().split('.')[1].capitalize(),
),
ServerMetadataEntity(
type: MetadataType.cpu,
trId: 'server.cpu',
value: server.serverType.cores.toString(),
),
ServerMetadataEntity(
type: MetadataType.ram,
trId: 'server.ram',
value: '${server.serverType.memory.toString()} GB',
),
ServerMetadataEntity(
type: MetadataType.cost,
trId: 'server.monthly_cost',
value: server.serverType.prices[1].monthly.toStringAsFixed(2),
),
ServerMetadataEntity(
type: MetadataType.location,
trId: 'server.location',
value: '${server.location.city}, ${server.location.country}',
),
ServerMetadataEntity(
type: MetadataType.other,
trId: 'server.provider',
value: _adapter.api().displayProviderName,
),
];
} catch (e) {
return GenericResult(
success: false,
data: [],
message: e.toString(),
);
}
return GenericResult(success: true, data: metadata);
}
@override
Future<GenericResult<ServerMetrics?>> getMetrics(
final int serverId,
final DateTime start,
final DateTime end,
) async {
ServerMetrics? metrics;
List<TimeSeriesData> serializeTimeSeries(
final Map<String, dynamic> json,
final String type,
) {
final List list = json['time_series'][type]['values'];
return list
.map((final el) => TimeSeriesData(el[0], double.parse(el[1])))
.toList();
}
final cpuResult = await _adapter.api().getMetrics(
serverId,
start,
end,
'cpu',
);
if (cpuResult.data.isEmpty || !cpuResult.success) {
return GenericResult(
success: false,
data: metrics,
code: cpuResult.code,
message: cpuResult.message,
);
}
final netResult = await _adapter.api().getMetrics(
serverId,
start,
end,
'network',
);
if (cpuResult.data.isEmpty || !netResult.success) {
return GenericResult(
success: false,
data: metrics,
code: netResult.code,
message: netResult.message,
);
}
metrics = ServerMetrics(
cpu: serializeTimeSeries(
cpuResult.data,
'cpu',
),
bandwidthIn: serializeTimeSeries(
netResult.data,
'network.0.bandwidth.in',
),
bandwidthOut: serializeTimeSeries(
netResult.data,
'network.0.bandwidth.out',
),
end: end,
start: start,
stepsInSecond: cpuResult.data['step'],
);
return GenericResult(data: metrics, success: true);
}
@override
Future<GenericResult<DateTime?>> restart(final int serverId) async {
DateTime? timestamp;
final result = await _adapter.api().restart(serverId);
if (!result.success) {
return GenericResult(
success: false,
data: timestamp,
code: result.code,
message: result.message,
);
}
timestamp = DateTime.now();
return GenericResult(
success: true,
data: timestamp,
);
}
@override
Future<GenericResult<DateTime?>> powerOn(final int serverId) async {
DateTime? timestamp;
final result = await _adapter.api().powerOn(serverId);
if (!result.success) {
return GenericResult(
success: false,
data: timestamp,
code: result.code,
message: result.message,
);
}
timestamp = DateTime.now();
return GenericResult(
success: true,
data: timestamp,
);
}
String dnsProviderToInfectName(final DnsProviderType dnsProvider) {
String dnsProviderType;
switch (dnsProvider) {
case DnsProviderType.digitalOcean:
dnsProviderType = 'DIGITALOCEAN';
break;
case DnsProviderType.cloudflare:
default:
dnsProviderType = 'CLOUDFLARE';
break;
}
return dnsProviderType;
}
@override
Future<GenericResult<CallbackDialogueBranching?>> launchInstallation(
final LaunchInstallationData installationData,
) async {
final volumeResult = await _adapter.api().createVolume();
if (!volumeResult.success || volumeResult.data == null) {
return GenericResult(
data: CallbackDialogueBranching(
choices: [
CallbackDialogueChoice(
title: 'basis.cancel'.tr(),
callback: await installationData.errorCallback(),
),
CallbackDialogueChoice(
title: 'basis.try_again'.tr(),
callback: () async => launchInstallation(installationData),
),
],
description:
volumeResult.message ?? 'modals.volume_creation_error'.tr(),
title: 'modals.unexpected_error'.tr(),
),
success: false,
message: volumeResult.message,
code: volumeResult.code,
);
}
final volume = volumeResult.data!;
final serverApiToken = StringGenerators.apiToken();
final hostname = getHostnameFromDomain(installationData.domainName);
final serverResult = await _adapter.api().createServer(
dnsApiToken: installationData.dnsApiToken,
rootUser: installationData.rootUser,
domainName: installationData.domainName,
serverType: installationData.serverTypeId,
dnsProviderType:
dnsProviderToInfectName(installationData.dnsProviderType),
hostName: hostname,
volumeId: volume.id,
base64Password: base64.encode(
utf8.encode(installationData.rootUser.password ?? 'PASS'),
),
databasePassword: StringGenerators.dbPassword(),
serverApiToken: serverApiToken,
);
if (!serverResult.success || serverResult.data == null) {
await _adapter.api().deleteVolume(volume.id);
await Future.delayed(const Duration(seconds: 5));
if (serverResult.message != null &&
serverResult.message == 'uniqueness_error') {
return GenericResult(
data: CallbackDialogueBranching(
choices: [
CallbackDialogueChoice(
title: 'basis.cancel'.tr(),
callback: installationData.errorCallback(),
),
CallbackDialogueChoice(
title: 'basis.yes'.tr(),
callback: () async {
final deleting = await deleteServer(hostname);
if (deleting.success) {
return launchInstallation(installationData);
}
return deleting;
},
),
],
description: volumeResult.message ?? 'modals.destroy_server'.tr(),
title: 'modals.already_exists'.tr(),
),
success: false,
message: volumeResult.message,
code: volumeResult.code,
);
} else {
return GenericResult(
data: CallbackDialogueBranching(
choices: [
CallbackDialogueChoice(
title: 'basis.cancel'.tr(),
callback: () async {
final deletion = await deleteServer(hostname);
if (deletion.success) {
installationData.errorCallback();
}
return deletion;
},
),
CallbackDialogueChoice(
title: 'basis.try_again'.tr(),
callback: () async => launchInstallation(installationData),
),
],
description:
volumeResult.message ?? 'recovering.generic_error'.tr(),
title: 'modals.unexpected_error'.tr(),
),
success: false,
message: volumeResult.message,
code: volumeResult.code,
);
}
}
final serverDetails = ServerHostingDetails(
id: serverResult.data['server']['id'],
ip4: serverResult.data['server']['public_net']['ipv4']['ip'],
createTime: DateTime.now(),
volume: volume,
apiToken: serverApiToken,
provider: ServerProviderType.hetzner,
);
final createDnsResult = await _adapter.api().createReverseDns(
serverId: serverDetails.id,
ip4: serverDetails.ip4,
dnsPtr: installationData.domainName,
);
if (!createDnsResult.success) {
return GenericResult(
data: CallbackDialogueBranching(
choices: [
CallbackDialogueChoice(
title: 'basis.cancel'.tr(),
callback: () async {
final deletion = await deleteServer(hostname);
if (deletion.success) {
installationData.errorCallback();
}
return deletion;
},
),
CallbackDialogueChoice(
title: 'basis.try_again'.tr(),
callback: () async {
await _adapter.api().deleteVolume(volume.id);
await Future.delayed(const Duration(seconds: 5));
final deletion = await deleteServer(hostname);
if (deletion.success) {
await Future.delayed(const Duration(seconds: 5));
return launchInstallation(installationData);
}
return deletion;
},
),
],
description: volumeResult.message ?? 'recovering.generic_error'.tr(),
title: 'modals.unexpected_error'.tr(),
),
success: false,
message: volumeResult.message,
code: volumeResult.code,
);
}
await installationData.successCallback(serverDetails);
return GenericResult(success: true, data: null);
}
Future<GenericResult<CallbackDialogueBranching?>> deleteServer(
final String hostname,
) async {
final serversResult = await _adapter.api().getServers();
try {
final servers = serversResult.data;
HetznerServerInfo? foundServer;
for (final server in servers) {
if (server.name == hostname) {
foundServer = server;
break;
}
}
for (final volumeId in foundServer!.volumes) {
await _adapter.api().detachVolume(volumeId);
}
await Future.delayed(const Duration(seconds: 10));
final List<Future> laterFutures = <Future>[];
for (final volumeId in foundServer.volumes) {
laterFutures.add(_adapter.api().deleteVolume(volumeId));
}
laterFutures.add(_adapter.api().deleteServer(serverId: foundServer.id));
await Future.wait(laterFutures);
} catch (e) {
print(e);
return GenericResult(
success: false,
data: CallbackDialogueBranching(
choices: [
CallbackDialogueChoice(
title: 'basis.cancel'.tr(),
callback: null,
),
CallbackDialogueChoice(
title: 'basis.try_again'.tr(),
callback: () async {
await Future.delayed(const Duration(seconds: 5));
return deleteServer(hostname);
},
),
],
description: 'modals.try_again'.tr(),
title: 'modals.server_deletion_error'.tr(),
),
message: e.toString(),
);
}
return GenericResult(
success: true,
data: null,
);
}
Future<GenericResult<ServerVolume?>> createVolume() async {
ServerVolume? volume;
final result = await _adapter.api().createVolume();
if (!result.success || result.data == null) {
return GenericResult(
data: null,
success: false,
message: result.message,
code: result.code,
);
}
try {
final volumeId = result.data['volume']['id'];
final volumeSize = result.data['volume']['size'];
final volumeServer = result.data['volume']['server'];
final volumeName = result.data['volume']['name'];
final volumeDevice = result.data['volume']['linux_device'];
volume = ServerVolume(
id: volumeId,
name: volumeName,
sizeByte: volumeSize,
serverId: volumeServer,
linuxDevice: volumeDevice,
);
} catch (e) {
print(e);
return GenericResult(
data: null,
success: false,
message: e.toString(),
);
}
return GenericResult(
data: volume,
success: true,
code: result.code,
message: result.message,
);
}
Future<GenericResult<List<ServerVolume>>> getVolumes({
final String? status,
}) async {
final List<ServerVolume> volumes = [];
final result = await _adapter.api().getVolumes();
if (!result.success) {
return GenericResult(
data: [],
success: false,
message: result.message,
code: result.code,
);
}
try {
for (final rawVolume in result.data) {
final int volumeId = rawVolume['id'];
final int volumeSize = rawVolume['size'] * 1024 * 1024 * 1024;
final volumeServer = rawVolume['server'];
final String volumeName = rawVolume['name'];
final volumeDevice = rawVolume['linux_device'];
final volume = ServerVolume(
id: volumeId,
name: volumeName,
sizeByte: volumeSize,
serverId: volumeServer,
linuxDevice: volumeDevice,
);
volumes.add(volume);
}
} catch (e) {
return GenericResult(
data: [],
success: false,
message: e.toString(),
);
}
return GenericResult(
data: volumes,
success: true,
code: result.code,
message: result.message,
);
}
Future<GenericResult<void>> deleteVolume(final int volumeId) async =>
_adapter.api().deleteVolume(volumeId);
Future<GenericResult<bool>> attachVolume(
final ServerVolume volume,
final int serverId,
) async =>
_adapter.api().attachVolume(
volume,
serverId,
);
Future<GenericResult<bool>> detachVolume(
final int volumeId,
) async =>
_adapter.api().detachVolume(
volumeId,
);
Future<bool> resizeVolume(
final ServerVolume volume,
final DiskSize size,
) async =>
_adapter.api().resizeVolume(
volume,
size,
);
}