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IndexerDefinitionUpdateService.cs
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IndexerDefinitionUpdateService.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using NLog;
using NzbDrone.Common.Cache;
using NzbDrone.Common.Disk;
using NzbDrone.Common.EnvironmentInfo;
using NzbDrone.Common.Http;
using NzbDrone.Core.Indexers.Definitions.Cardigann;
using NzbDrone.Core.Lifecycle;
using NzbDrone.Core.Messaging.Commands;
using NzbDrone.Core.Messaging.Events;
using YamlDotNet.Serialization;
using YamlDotNet.Serialization.NamingConventions;
namespace NzbDrone.Core.IndexerVersions
{
public interface IIndexerDefinitionUpdateService
{
List<CardigannMetaDefinition> All();
CardigannDefinition GetCachedDefinition(string fileKey);
List<string> GetBlocklist();
}
public class IndexerDefinitionUpdateService : IIndexerDefinitionUpdateService, IExecute<IndexerDefinitionUpdateCommand>, IHandle<ApplicationStartedEvent>
{
/* Update Service will fall back if version # does not exist for an indexer per Ta */
private const string DEFINITION_BRANCH = "master";
private const int DEFINITION_VERSION = 9;
// Used when moving yml to C#
private readonly List<string> _definitionBlocklist = new ()
{
"aither",
"animeworld",
"audiobookbay",
"beyond-hd-oneurl",
"beyond-hd",
"blutopia",
"brsociety",
"danishbytes",
"datascene",
"desitorrents",
"hdbits",
"lat-team",
"reelflix",
"shareisland",
"skipthecommercials",
"tellytorrent"
};
private readonly IHttpClient _httpClient;
private readonly IAppFolderInfo _appFolderInfo;
private readonly IDiskProvider _diskProvider;
private readonly IIndexerDefinitionVersionService _versionService;
private readonly ICached<CardigannDefinition> _cache;
private readonly Logger _logger;
private readonly IDeserializer _deserializer = new DeserializerBuilder()
.IgnoreUnmatchedProperties()
.WithNamingConvention(CamelCaseNamingConvention.Instance)
.Build();
public IndexerDefinitionUpdateService(IHttpClient httpClient,
IAppFolderInfo appFolderInfo,
IDiskProvider diskProvider,
IIndexerDefinitionVersionService versionService,
ICacheManager cacheManager,
Logger logger)
{
_appFolderInfo = appFolderInfo;
_diskProvider = diskProvider;
_versionService = versionService;
_cache = cacheManager.GetCache<CardigannDefinition>(typeof(CardigannDefinition), "definitions");
_httpClient = httpClient;
_logger = logger;
}
public List<CardigannMetaDefinition> All()
{
var indexerList = new List<CardigannMetaDefinition>();
try
{
// Grab latest def list from server or fallback to disk
try
{
var request = new HttpRequest($"https://indexers.prowlarr.com/{DEFINITION_BRANCH}/{DEFINITION_VERSION}");
var response = _httpClient.Get<List<CardigannMetaDefinition>>(request);
indexerList = response.Resource.Where(i => !_definitionBlocklist.Contains(i.File)).ToList();
}
catch
{
var definitionFolder = Path.Combine(_appFolderInfo.AppDataFolder, "Definitions");
indexerList = ReadDefinitionsFromDisk(indexerList, definitionFolder);
}
//Check for custom definitions
var customDefinitionFolder = Path.Combine(_appFolderInfo.AppDataFolder, "Definitions", "Custom");
indexerList = ReadDefinitionsFromDisk(indexerList, customDefinitionFolder);
}
catch
{
_logger.Error("Failed to Connect to Indexer Definition Server for Indexer listing");
}
return indexerList;
}
public CardigannDefinition GetCachedDefinition(string fileKey)
{
if (string.IsNullOrEmpty(fileKey))
{
throw new ArgumentNullException(nameof(fileKey));
}
var definition = _cache.Get(fileKey, () => GetUncachedDefinition(fileKey));
return definition;
}
public List<string> GetBlocklist()
{
return _definitionBlocklist;
}
private List<CardigannMetaDefinition> ReadDefinitionsFromDisk(List<CardigannMetaDefinition> defs, string path, SearchOption options = SearchOption.TopDirectoryOnly)
{
var indexerList = defs;
var directoryInfo = new DirectoryInfo(path);
if (directoryInfo.Exists)
{
var files = directoryInfo.GetFiles("*.yml", options);
foreach (var file in files)
{
_logger.Debug("Loading definition {0}", file.FullName);
try
{
var definitionString = File.ReadAllText(file.FullName);
var definition = _deserializer.Deserialize<CardigannMetaDefinition>(definitionString);
definition.File = Path.GetFileNameWithoutExtension(file.Name);
if (indexerList.Any(i => i.File == definition.File || i.Name == definition.Name))
{
_logger.Warn("Definition {0} does not have unique file name or Indexer name", file.FullName);
continue;
}
indexerList.Add(definition);
}
catch (Exception ex)
{
_logger.Error(ex, "Error while parsing Cardigann definition {0}", file.FullName);
}
}
}
return indexerList;
}
private CardigannDefinition GetUncachedDefinition(string fileKey)
{
if (string.IsNullOrEmpty(fileKey))
{
throw new ArgumentNullException(nameof(fileKey));
}
EnsureDefinitionsFolder();
var definitionFolder = Path.Combine(_appFolderInfo.AppDataFolder, "Definitions");
var directoryInfo = new DirectoryInfo(definitionFolder);
if (directoryInfo.Exists)
{
var files = directoryInfo.GetFiles($"{fileKey}.yml", SearchOption.AllDirectories);
if (files.Any())
{
var file = files.First();
_logger.Trace("Loading Cardigann definition {0}", file.FullName);
try
{
var definitionString = File.ReadAllText(file.FullName);
var definition = _deserializer.Deserialize<CardigannDefinition>(definitionString);
return CleanIndexerDefinition(definition);
}
catch (Exception ex)
{
_logger.Error(ex, "Error while parsing Cardigann definition {0}", file.FullName);
}
}
}
var dbDefs = _versionService.All();
//Check to ensure it's in versioned defs before we go to web
if (dbDefs.Count > 0 && dbDefs.All(x => x.File != fileKey))
{
throw new ArgumentNullException(nameof(fileKey));
}
//No definition was returned locally, go to the web
return GetHttpDefinition(fileKey);
}
private CardigannDefinition GetHttpDefinition(string id)
{
var request = new HttpRequest($"https://indexers.prowlarr.com/{DEFINITION_BRANCH}/{DEFINITION_VERSION}/{id}");
var response = _httpClient.Get(request);
var definition = _deserializer.Deserialize<CardigannDefinition>(response.Content);
return CleanIndexerDefinition(definition);
}
private CardigannDefinition CleanIndexerDefinition(CardigannDefinition definition)
{
if (definition.Settings == null)
{
definition.Settings = new List<SettingsField>
{
new () { Name = "username", Label = "Username", Type = "text" },
new () { Name = "password", Label = "Password", Type = "password" }
};
}
if (definition.Encoding == null)
{
definition.Encoding = "UTF-8";
}
if (definition.Login != null && definition.Login.Method == null)
{
definition.Login.Method = "form";
}
if (definition.Search.Paths == null)
{
definition.Search.Paths = new List<SearchPathBlock>();
}
// convert definitions with a single search Path to a Paths entry
if (definition.Search.Path != null)
{
definition.Search.Paths.Add(new SearchPathBlock
{
Path = definition.Search.Path,
Inheritinputs = true
});
}
return definition;
}
public void Handle(ApplicationStartedEvent message)
{
// Sync indexers on app start
UpdateLocalDefinitions();
}
public void Execute(IndexerDefinitionUpdateCommand message)
{
UpdateLocalDefinitions();
}
private void EnsureDefinitionsFolder()
{
var definitionFolder = Path.Combine(_appFolderInfo.AppDataFolder, "Definitions");
_diskProvider.CreateFolder(definitionFolder);
}
private void UpdateLocalDefinitions()
{
var startupFolder = _appFolderInfo.AppDataFolder;
try
{
EnsureDefinitionsFolder();
var definitionsFolder = Path.Combine(startupFolder, "Definitions");
var saveFile = Path.Combine(definitionsFolder, "indexers.zip");
_httpClient.DownloadFile($"https://indexers.prowlarr.com/{DEFINITION_BRANCH}/{DEFINITION_VERSION}/package.zip", saveFile);
using (var archive = ZipFile.OpenRead(saveFile))
{
archive.ExtractToDirectory(definitionsFolder, true);
}
_diskProvider.DeleteFile(saveFile);
_cache.Clear();
_logger.Debug("Updated indexer definitions");
}
catch (Exception ex)
{
_logger.Error(ex, "Definition update failed");
}
}
}
}