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Add anonymous playback with an optional Spotify-style preview cap

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New Playback:AllowAnonymousListening / Playback:AnonymousFragmentSeconds
settings control whether a request without a session can stream at all,
and if so, whether it's limited to a fragment instead of the full track:

- GET /tracks/{id}/stream and GET /youtube/tracks/{videoId}/stream no
  longer require authorization outright; the handlers gate on the config
  instead, so both keep working exactly as before when it's off (the
  default).
- The fragment cap is enforced by the Streaming Gateway, not the client:
  the stream ticket now carries an optional maxBytes claim (computed from
  AnonymousFragmentSeconds and the transcoder's known bitrate), and
  TicketValidationMiddleware clamps the Range it forwards to SeaweedFS to
  stay under it — synthesizing one if the request didn't send one, and
  answering 416 outright if the requested range starts past the cap.
- A YouTube track that hasn't been provisioned server-side yet streams
  straight from YouTube's CDN, bypassing the Gateway entirely — there's no
  way to cap that, so an anonymous request for one is refused (409) instead
  of silently handing out an uncapped stream.
- ListeningHistory has a non-nullable UserId, so anonymous plays simply
  don't get recorded rather than trying to force a row through the FK.

Also fixes a real, pre-existing bug this surfaced: the AppSettings.Development.json
of the Api, Worker, and StreamingGateway all pointed StreamTicket/Workers
paths at "../../deploy/..." — one directory short of deploy/'s actual
location at the repo root relative to each project's own folder. Docker
never hit this (it mounts an absolute /keys path), so it had apparently
never been exercised via `dotnet run` before.
This commit is contained in:
Admin
2026-09-10 09:56:57 +02:00
parent ca04a81e81
commit 356e5c1101
22 changed files with 486 additions and 86 deletions
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backend/Tests/Musify.Application.Tests/Services/TrackStreamIssuerTests.cs
+53 -5
View File
@@ -1,4 +1,5 @@
using Microsoft.EntityFrameworkCore;
using Musify.Application.Configuration;
using Musify.Application.Contracts;
using Musify.Application.Services;
using Musify.Application.Tests.TestSupport;
@@ -11,13 +12,17 @@ namespace Musify.Application.Tests.Services
{
private readonly IStreamTicketService ticketService = Substitute.For<IStreamTicketService>();
private TrackStreamIssuer CreateIssuer() => new(
Database, ticketService, TestConfigurations.Track(), TestConfigurations.StreamGateway("https://stream.musify.test/"));
private TrackStreamIssuer CreateIssuer(PlaybackConfiguration? playback = null) => new(
Database,
ticketService,
TestConfigurations.Track(),
TestConfigurations.StreamGateway("https://stream.musify.test/"),
playback ?? TestConfigurations.Playback());
[Fact]
public async Task IssueAsync_BuildsManifestUrlAndRecordsListeningHistory()
{
ticketService.IssueTicket(7, Arg.Any<string>()).Returns(new StreamTicket("signed-token", 120));
ticketService.IssueTicket(7, Arg.Any<string>(), Arg.Any<long?>()).Returns(new StreamTicket("signed-token", 120));
var owner = TestEntities.User(7);
var track = TestEntities.LocalTrack(owner);
await SeedAsync(owner, track);
@@ -38,14 +43,57 @@ namespace Musify.Application.Tests.Services
[Fact]
public async Task IssueAsync_PassesTheProcessedAudioKeyPrefixToTheTicketService()
{
ticketService.IssueTicket(Arg.Any<long>(), Arg.Any<string>()).Returns(new StreamTicket("token", 60));
ticketService.IssueTicket(Arg.Any<long?>(), Arg.Any<string>(), Arg.Any<long?>()).Returns(new StreamTicket("token", 60));
var owner = TestEntities.User(1);
var track = TestEntities.LocalTrack(owner);
await SeedAsync(owner, track);
await CreateIssuer().IssueAsync(track.Id, "folder-42", userId: 1, TestContext.Current.CancellationToken);
ticketService.Received(1).IssueTicket(1, "Tracks/ProcessedAudios/folder-42/");
ticketService.Received(1).IssueTicket(1, "Tracks/ProcessedAudios/folder-42/", null);
}
[Fact]
public async Task IssueAsync_AnonymousUser_SkipsListeningHistoryAndNeverThrows()
{
ticketService.IssueTicket(Arg.Any<long?>(), Arg.Any<string>(), Arg.Any<long?>()).Returns(new StreamTicket("token", 60));
var owner = TestEntities.User(1);
var track = TestEntities.LocalTrack(owner);
await SeedAsync(owner, track);
var response = await CreateIssuer(TestConfigurations.Playback(allowAnonymousListening: true))
.IssueAsync(track.Id, "folder-42", userId: null, TestContext.Current.CancellationToken);
Assert.Equal("token", response.Ticket);
Assert.Empty(await Database.ListeningHistories.ToListAsync(TestContext.Current.CancellationToken));
}
[Fact]
public async Task IssueAsync_AnonymousUserWithFragmentConfigured_PassesTheByteCapToTheTicketService()
{
ticketService.IssueTicket(Arg.Any<long?>(), Arg.Any<string>(), Arg.Any<long?>()).Returns(new StreamTicket("token", 60));
var owner = TestEntities.User(1);
var track = TestEntities.LocalTrack(owner);
await SeedAsync(owner, track);
var playback = TestConfigurations.Playback(allowAnonymousListening: true, anonymousFragmentSeconds: 30);
await CreateIssuer(playback).IssueAsync(track.Id, "folder-42", userId: null, TestContext.Current.CancellationToken);
ticketService.Received(1).IssueTicket(null, "Tracks/ProcessedAudios/folder-42/", 30L * playback.EstimatedAudioBytesPerSecond);
}
[Fact]
public async Task IssueAsync_AuthenticatedUser_IgnoresTheAnonymousFragmentCap()
{
ticketService.IssueTicket(Arg.Any<long?>(), Arg.Any<string>(), Arg.Any<long?>()).Returns(new StreamTicket("token", 60));
var owner = TestEntities.User(1);
var track = TestEntities.LocalTrack(owner);
await SeedAsync(owner, track);
var playback = TestConfigurations.Playback(allowAnonymousListening: true, anonymousFragmentSeconds: 30);
await CreateIssuer(playback).IssueAsync(track.Id, "folder-42", userId: 1, TestContext.Current.CancellationToken);
ticketService.Received(1).IssueTicket(1, "Tracks/ProcessedAudios/folder-42/", null);
}
}
}