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Improved CancellationToken usage, Added more logging to Workers, Added Code-comments (please future me, be thankful)

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glax
2025-09-02 19:36:06 +02:00
parent 6fa166363a
commit 55f04710a7
16 changed files with 235 additions and 121 deletions
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44
API/Workers/MangaDownloadWorkers/RetrieveMangaChaptersFromMangaconnectorWorker.cs
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@@ -4,35 +4,51 @@ using Microsoft.EntityFrameworkCore;
namespace API.Workers;
/// <summary>
/// Retrieves the metadata of available chapters on the Mangaconnector
/// </summary>
/// <param name="mcId"></param>
/// <param name="language"></param>
/// <param name="dependsOn"></param>
public class RetrieveMangaChaptersFromMangaconnectorWorker(MangaConnectorId<Manga> mcId, string language, IEnumerable<BaseWorker>? dependsOn = null)
: BaseWorkerWithContext<MangaContext>(dependsOn)
{
internal readonly string MangaConnectorIdId = mcId.Key;
protected override async Task<BaseWorker[]> DoWorkInternal()
{
if (await DbContext.MangaConnectorToManga.FirstOrDefaultAsync(c => c.Key == MangaConnectorIdId) is not { } mangaConnectorId)
Log.Debug($"Getting Chapters for MangaConnectorId {MangaConnectorIdId}...");
// Getting MangaConnector info
if (await DbContext.MangaConnectorToManga
.Include(id => id.Obj)
.FirstOrDefaultAsync(c => c.Key == MangaConnectorIdId, CancellationToken) is not { } mangaConnectorId)
{
Log.Error("Could not get MangaConnectorId.");
return []; //TODO Exception?
}
if (!Tranga.TryGetMangaConnector(mangaConnectorId.MangaConnectorName, out MangaConnector? mangaConnector))
{
Log.Error("Could not get MangaConnector.");
return []; //TODO Exception?
}
Log.Debug($"Getting Chapters for MangaConnectorId {mangaConnectorId}...");
await DbContext.Entry(mangaConnectorId).Navigation(nameof(MangaConnectorId<Manga>.Obj)).LoadAsync(CancellationTokenSource.Token);
Manga manga = mangaConnectorId.Obj;
await DbContext.Entry(manga).Collection(m => m.Chapters).LoadAsync(CancellationTokenSource.Token);
// Load existing Chapters (in database)
await DbContext.Entry(manga).Collection(m => m.Chapters).LoadAsync(CancellationToken);
// This gets all chapters that are not downloaded
(Chapter, MangaConnectorId<Chapter>)[] allChapters =
(Chapter chapter, MangaConnectorId<Chapter> chapterId)[] allChapters =
mangaConnector.GetChapters(mangaConnectorId, language).DistinctBy(c => c.Item1.Key).ToArray();
int beforeAmount = manga.Chapters.Count;
Log.Debug($"Got {allChapters.Length} chapters from connector.");
DbContext.Entry(manga).Collection(m => m.Chapters).CurrentValue = manga.Chapters.UnionBy(allChapters.Select(c => c.chapter), c => c.Key);
int afterAmount = manga.Chapters.Count;
Log.Debug($"Got {afterAmount} new chapters.");
int addedChapters = 0;
foreach ((Chapter chapter, MangaConnectorId<Chapter> mcId) newChapter in allChapters)
{
if (Tranga.AddChapterToContext(newChapter, DbContext, out Chapter? addedChapter, CancellationTokenSource.Token) == false)
continue;
manga.Chapters.Add(addedChapter);
}
Log.Info($"{manga.Chapters.Count} existing + {addedChapters} new chapters.");
await DbContext.Sync(CancellationTokenSource.Token);
if(await DbContext.Sync(CancellationToken) is { success: false } e)
Log.Error($"Failed to save database changes: {e.exceptionMessage}");
return [];
}