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using System.Diagnostics;
using ArcaneLibs.Extensions;
using Microsoft.EntityFrameworkCore;
using Spacebar.Interop.Cdn.Signing;
using Spacebar.Models.Db.Contexts;
namespace Spacebar.Cdn.Fsck;
public class FsckService(ILogger<FsckService> logger, IServiceScopeFactory serviceScopeFactory, MigrationFileStores stores, CdnSigningService sigService) : IHostedService {
private SpacebarDbContext _db = null!;
public async Task StartAsync(CancellationToken cancellationToken) {
var sw = Stopwatch.StartNew();
await using var scope = serviceScopeFactory.CreateAsyncScope();
_db = scope.ServiceProvider.GetRequiredService<SpacebarDbContext>();
logger.LogInformation("Starting migrations from {source} to {dest}...", $"{stores.From.GetType().FullName}({stores.From.BaseUrl})",
$"{stores.To.GetType().FullName}({stores.To.BaseUrl})");
await RunFsckAsync("User Avatars", "/avatars", EnumerateUserAvatarFilesAsync(), cancellationToken);
await RunFsckAsync("User Banners", "/banners", EnumerateUserBannerPathsAsync(), cancellationToken);
await RunFsckAsync("Guild Icons", "/icons", EnumerateGuildIconPathsAsync(), cancellationToken);
await RunFsckAsync("Stickers", "/stickers", EnumerateStickerPathsAsync(), cancellationToken);
await RunFsckAsync("Emojis", "/emojis", EnumerateEmojiPathsAsync(), cancellationToken);
// var atts = EnumerateAttachmentPathsAsync();
// var refreshedAtts = new List<FsckItem>();
// var attRefreshedTasks = atts.Chunk(40).Select(async x => {
// var req =
// return new FsckItem[10];
// });
// await foreach (var attRefreshedChunk in attRefreshedTasks.ToAsyncResultEnumerable()) {
// refreshedAtts.AddRange(attRefreshedChunk);
// }
await RunFsckAsync("Attachments", "/attachments", EnumerateAttachmentPathsAsync(), cancellationToken);
logger.LogInformation("Fsck complete in {time}.", sw.Elapsed);
}
public async Task StopAsync(CancellationToken cancellationToken) { }
private readonly Stopwatch _lastUpdateSw = Stopwatch.StartNew();
private readonly SemaphoreSlim _fsckSemaphore = new(32, 32);
public struct FsckItem {
public string Path;
public string ItemId;
}
private async Task RunFsckAsync(string name, string path, IQueryable<FsckItem> items, CancellationToken? cancellationToken = null) {
int i = 0, notFound = 0, alreadyLocal = 0, count = await items.CountAsync();
List<Task> tasks = [];
await foreach (var item in items.AsAsyncEnumerable()) {
tasks.Add(Task.Run(async () => {
try {
await _fsckSemaphore.WaitAsync();
if (cancellationToken?.IsCancellationRequested ?? false)
return;
if (await stores.To.FileExists(item.Path)) {
alreadyLocal++;
logger.LogInformation("TO: {itemType} {itemId} already exists at {path}, skipping.", name, item.ItemId, item.Path);
}
else if (!await stores.From.FileExists(item.Path)) {
notFound++;
logger.LogWarning("FROM: {itemType} {itemId} is missing at {path}", name, item.ItemId, stores.From.BaseUrl + item.Path);
}
else {
// logger.LogInformation("Migrating {itemType} {itemId} at {path}", name, item.ItemId, item.Path);
await using var f = await stores.From.GetFile(item.Path);
// logger.LogInformation("Got file {itemType} {itemId} at {path}, writing to destination...", name, item.ItemId, item.Path);
await stores.To.WriteFile(item.Path, f.Stream);
}
if (true || _lastUpdateSw.ElapsedMilliseconds >= 1000 / 30 || i == 0) {
_lastUpdateSw.Restart();
Console.Write($"{name} download: {i}/{count}: {item.Path,-64}\r");
}
i++;
}
catch (Exception ex) {
logger.LogError(ex, "Error processing {itemType} {itemId} at {path}: {message}", name, item.ItemId, item.Path, ex.Message);
}
finally {
_fsckSemaphore.Release();
}
}));
}
await Task.WhenAll(tasks);
logger.LogInformation("Validated {count} items for {path}: {alreadyLocal} already local, {notFound} not found", i, path, alreadyLocal, notFound);
}
#region User Assets
public IQueryable<FsckItem> EnumerateUserAvatarFilesAsync() =>
_db.Users
.Where(x => !string.IsNullOrWhiteSpace(x.Avatar))
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = $"/avatars/{x.Id}/{x.Avatar}",
ItemId = x.Id
});
public IQueryable<FsckItem> EnumerateUserBannerPathsAsync() =>
_db.Users
.Where(x => !string.IsNullOrWhiteSpace(x.Banner))
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = $"/banners/{x.Id}/{x.Banner}",
ItemId = x.Id
});
#endregion
#region Guild Assets
public IQueryable<FsckItem> EnumerateGuildIconPathsAsync() =>
_db.Guilds
.Where(x => !string.IsNullOrWhiteSpace(x.Icon))
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = $"/icons/{x.Id}/{x.Icon}",
ItemId = x.Id
});
public IQueryable<FsckItem> EnumerateRoleIconPathsAsync() =>
_db.Roles
.Where(x => !string.IsNullOrWhiteSpace(x.Icon))
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = $"/role-icons/{x.Id}/{x.Icon}",
ItemId = x.Id
});
public IQueryable<FsckItem> EnumerateStickerPathsAsync() =>
_db.Stickers
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = $"/stickers/{x.Id}.png",
ItemId = x.Id
});
public IQueryable<FsckItem> EnumerateEmojiPathsAsync() =>
_db.Emojis
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = $"/emojis/{x.Id}",
ItemId = x.Id
});
#endregion
#region Application Assets
public IQueryable<FsckItem> EnumerateApplicationIconPathsAsync() =>
_db.Applications
.Where(x => !string.IsNullOrWhiteSpace(x.Icon))
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = $"/app-icons/{x.Id}/{x.Icon}",
ItemId = x.Id
});
public IQueryable<FsckItem> EnumerateApplicationCoverPathsAsync() =>
_db.Applications
.Where(x => !string.IsNullOrWhiteSpace(x.Icon))
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = $"/app-icons/{x.Id}/{x.CoverImage}",
ItemId = x.Id
});
// TODO: not implemented?
// public IQueryable<FsckItem> EnumerateApplicationSplashPathsAsync() =>
// _db.Applications
// .Where(x => !string.IsNullOrWhiteSpace(x.Icon))
// .OrderBy(x => x.Id)
// .Select(x => new FsckItem {
// Path = $"/app-icons/{x.Id}/{x.OwnerId}", // TODO - no db property for splash?
// ItemId = x.Id
// });
//
// public IQueryable<FsckItem> EnumerateApplicationAssets() =>
// _db.Applications
// .Where(x => !string.IsNullOrWhiteSpace(x.Icon))
// .OrderBy(x => x.Id)
// .Select(x => new FsckItem {
// Path = $"/app-icons/{x.Id}/{x.Icon}",
// ItemId = x.Id
// });
#endregion
#region Attachments
public IQueryable<FsckItem> EnumerateAttachmentPathsAsync() =>
_db.Attachments
.OrderBy(x => x.Id)
.Select(x => new FsckItem {
Path = sigService.Sign(new() {
Path = $"/attachments/{x.Message!.ChannelId}/{x.Id}/{x.Filename}",
IpAddress = "109.128.185.4"
}).GetSignedPath(),
// Path = $"/attachments/{x.Message!.ChannelId}/{x.Id}/{x.Filename}",
ItemId = x.Id
});
#endregion
}
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