jellyfin-qbittorrent-monitor: take into account soulseek

modules/server-age-secrets.nix

@@ -68,6 +68,12 @@
       owner = "root";
       group = "root";
     };
+    slskd-api-key = lib.mkIf config.services.slskd.enable {
+      file = ../secrets/server/slskd-api-key.age;
+      mode = "0400";
+      owner = "root";
+      group = "root";
+    };
 
     slskd_env = {
       file = ../secrets/server/slskd_env.age;

services/jellyfin/jellyfin-qbittorrent-monitor.nix

@@ -77,14 +77,21 @@ lib.mkIf config.services.jellyfin.enable {
       "jellyfin.service"
       "qbittorrent.service"
       "jellyfin-webhook-configure.service"
-    ];
-    wants = [ "jellyfin-webhook-configure.service" ];
+    ]
+    ++ lib.optional config.services.slskd.enable "slskd.service";
+    wants = [
+      "jellyfin-webhook-configure.service"
+    ]
+    ++ lib.optional config.services.slskd.enable "slskd.service";
     wantedBy = [ "multi-user.target" ];
 
     serviceConfig = {
       Type = "simple";
       ExecStart = pkgs.writeShellScript "jellyfin-monitor-start" ''
         export JELLYFIN_API_KEY=$(cat $CREDENTIALS_DIRECTORY/jellyfin-api-key)
+        ${lib.optionalString config.services.slskd.enable ''
+          export SLSKD_API_KEY=$(cat $CREDENTIALS_DIRECTORY/slskd-api-key)
+        ''}
         exec ${
           pkgs.python3.withPackages (ps: with ps; [ requests ])
         }/bin/python ${./jellyfin-qbittorrent-monitor.py}
@@ -106,7 +113,10 @@ lib.mkIf config.services.jellyfin.enable {
       RemoveIPC = true;
 
       # Load credentials from agenix secrets
-      LoadCredential = "jellyfin-api-key:${config.age.secrets.jellyfin-api-key.path}";
+      LoadCredential = [
+        "jellyfin-api-key:${config.age.secrets.jellyfin-api-key.path}"
+      ]
+      ++ lib.optional config.services.slskd.enable "slskd-api-key:${config.age.secrets.slskd-api-key.path}";
     };
 
     environment = {
@@ -122,6 +132,9 @@ lib.mkIf config.services.jellyfin.enable {
       # Webhook receiver: Jellyfin Webhook plugin POSTs events here to throttle immediately.
       WEBHOOK_BIND = "127.0.0.1";
       WEBHOOK_PORT = toString webhookPort;
+    }
+    // lib.optionalAttrs config.services.slskd.enable {
+      SLSKD_URL = "http://127.0.0.1:${builtins.toString service_configs.ports.private.soulseek_web.port}";
     };
   };
 }

services/jellyfin/jellyfin-qbittorrent-monitor.py

@@ -39,6 +39,8 @@ class JellyfinQBittorrentMonitor:
         webhook_port=0,
         webhook_bind="127.0.0.1",
         gateway_ip=None,
+        slskd_url=None,
+        slskd_api_key=None,
     ):
         self.jellyfin_url = jellyfin_url
         self.qbittorrent_url = qbittorrent_url
@@ -69,6 +71,11 @@ class JellyfinQBittorrentMonitor:
         self.wake_event = threading.Event()
         self.webhook_server = None
 
+        # Soulseek (slskd) upload monitoring — optional.
+        # When slskd is present, active upload bandwidth is subtracted from the
+        # torrent budget alongside Jellyfin streaming. No soulseek URL → no-op.
+        self.slskd_url = slskd_url
+        self.slskd_api_key = slskd_api_key
         # Local network ranges (RFC 1918 private networks + localhost)
         self.local_networks = [
             ipaddress.ip_network("10.0.0.0/8"),
@@ -232,6 +239,66 @@ class JellyfinQBittorrentMonitor:
                     active_streams.append({"name": stream_name, "bitrate_bps": bitrate})
 
         return active_streams
+    def check_soulseek_uploads(self) -> int:
+        """Return total active upload bandwidth from slskd in bits per second.
+
+        Returns 0 when slskd is not configured, unreachable, or has no in-
+        progress uploads. The slskd REST API returns averageSpeed in bytes/s
+        per Transfer; we sum across all InProgress uploads and convert to bps.
+        """
+        if not self.slskd_url:
+            return 0
+
+        headers = {}
+        if self.slskd_api_key:
+            headers["X-API-Key"] = self.slskd_api_key
+
+
+        try:
+            response = self.session.get(
+                f"{self.slskd_url}/api/v0/transfers/uploads",
+                headers=headers,
+                timeout=10,
+            )
+            response.raise_for_status()
+        except requests.exceptions.HTTPError as e:
+            status = e.response.status_code if e.response is not None else "?"
+            # 401/403 mean our key is wrong or missing — a configuration error
+            # that needs operator attention. Log loudly so it's not silently ignored.
+            if status in (401, 403):
+                logger.error(
+                    f"slskd auth rejected (HTTP {status}). "
+                    f"Verify slskd-api-key agenix secret matches "
+                    f"services.slskd.settings.web.authentication.api_keys.monitor.key"
+                )
+            else:
+                logger.warning(f"slskd HTTP error {status}: {e}")
+            return 0
+        except requests.exceptions.RequestException as e:
+            logger.warning(f"Failed to query slskd uploads: {e}")
+            return 0
+
+        try:
+            uploads = response.json()
+        except json.JSONDecodeError as e:
+            logger.warning(f"Failed to parse slskd uploads response: {e}")
+            return 0
+
+        total_bps = 0
+        for user in uploads:
+            for directory in user.get("directories", []):
+                for transfer in directory.get("files", []):
+                    if transfer.get("state") == "InProgress":
+                        # averageSpeed is in bytes/s
+                        avg_speed = transfer.get("averageSpeed", 0) or 0
+                        total_bps += int(avg_speed * 8)
+
+        if total_bps > 0:
+            logger.debug(
+                f"Soulseek uploads: {total_bps} bps "
+                f"({total_bps / 8 / 1024:.0f} KB/s)"
+            )
+        return total_bps
 
     def check_qbittorrent_alternate_limits(self) -> bool:
         try:
@@ -415,6 +482,8 @@ class JellyfinQBittorrentMonitor:
         )
         if self.webhook_port:
             logger.info(f"Webhook receiver: {self.webhook_bind}:{self.webhook_port}")
+        if self.slskd_url:
+            logger.info(f"Soulseek (slskd) URL: {self.slskd_url}")
 
         signal.signal(signal.SIGINT, self.signal_handler)
         signal.signal(signal.SIGTERM, self.signal_handler)
@@ -458,13 +527,18 @@ class JellyfinQBittorrentMonitor:
                 total_streaming_bps = sum(
                     stream["bitrate_bps"] for stream in active_streams
                 )
+
+                # Soulseek uploads also consume WAN bandwidth — subtract from
+                # the torrent budget alongside Jellyfin streams.
+                soulseek_upload_bps = self.check_soulseek_uploads()
+                total_consumer_bps = total_streaming_bps + soulseek_upload_bps
+
                 remaining_bps = (
                     self.total_bandwidth_budget
                     - self.service_buffer
-                    - total_streaming_bps
+                    - total_consumer_bps
                 )
                 remaining_kbs = max(0, remaining_bps) / 8 / 1024
-
                 if not streaming_state:
                     desired_state = "unlimited"
                 elif streaming_active:
@@ -487,11 +561,12 @@ class JellyfinQBittorrentMonitor:
                         action = "pause torrents"
 
                     logger.info(
-                        "State change %s -> %s | streams=%d total_bps=%d remaining_bps=%d action=%s",
+                        "State change %s -> %s | streams=%d jellyfin_bps=%d slskd_bps=%d remaining_bps=%d action=%s",
                         self.current_state,
                         desired_state,
                         len(active_streams),
                         total_streaming_bps,
+                        soulseek_upload_bps,
                         remaining_bps,
                         action,
                     )
@@ -544,6 +619,8 @@ if __name__ == "__main__":
     webhook_port = int(os.getenv("WEBHOOK_PORT", "0"))
     webhook_bind = os.getenv("WEBHOOK_BIND", "127.0.0.1")
     gateway_ip = os.getenv("LAN_GATEWAY_IP") or None
+    slskd_url = os.getenv("SLSKD_URL") or None
+    slskd_api_key = os.getenv("SLSKD_API_KEY") or None
 
     monitor = JellyfinQBittorrentMonitor(
         jellyfin_url=jellyfin_url,
@@ -560,6 +637,8 @@ if __name__ == "__main__":
         webhook_port=webhook_port,
         webhook_bind=webhook_bind,
         gateway_ip=gateway_ip,
+        slskd_url=slskd_url,
+        slskd_api_key=slskd_api_key,
     )
 
     monitor.run()

services/soulseek.nix

@@ -35,6 +35,11 @@
     settings = {
       web = {
         port = service_configs.ports.private.soulseek_web.port;
+        authentication.api_keys.monitor = {
+          key = "slskd-monitor-readonly-key-localhost";
+          role = "readonly";
+          cidr = "127.0.0.1/32";
+        };
       };
       soulseek = {
         # description = "smth idk";

tests/jellyfin-qbittorrent-monitor.nix

@@ -808,5 +808,169 @@ pkgs.testers.runNixOSTest {
         # After Jellyfin comes back, sessions are gone - should unthrottle
         time.sleep(3)
         assert not is_throttled(), "Should unthrottle after Jellyfin returns with no sessions"
+
+    # === SLSKD UPLOAD BANDWIDTH TESTS ===
+
+    # Spin up a mock slskd API server that simulates active uploads. The
+    # monitor should query it and subtract upload bandwidth from the torrent
+    # budget alongside Jellyfin streaming.
+
+    mock_slskd_port = 9999
+
+
+    # Start a mock slskd server. It checks the X-API-Key header to verify
+    # the monitor sends credentials correctly, and returns 401 if they mismatch.
+    mock_slskd_key = "test-slskd-api-key"
+    server.succeed(
+        f"{pkgs.python3}/bin/python -c \""
+        "import json, http.server, threading;"
+        f"EXPECTED_KEY='{mock_slskd_key}';"
+        "class H(http.server.BaseHTTPRequestHandler):"
+        " uploads_response=[];"
+        " def do_GET(s):"
+        "  if s.path=='/api/v0/transfers/uploads':"
+        "   if s.headers.get('X-API-Key')!=EXPECTED_KEY:"
+        "    s.send_error(401);"
+        "    return;"
+        "   s.send_response(200);"
+        "   s.send_header('Content-Type','application/json');"
+        "   s.end_headers();"
+        "   s.wfile.write(json.dumps(H.uploads_response).encode());"
+        "  else: s.send_error(404);"
+        " def log_message(*a): pass;"
+        f"server=http.server.HTTPServer(('127.0.0.1',{mock_slskd_port}),H);"
+        "threading.Thread(target=server.serve_forever,daemon=True).start();"
+        "import signal; signal.pause()\" &"
+    )
+    server.wait_for_open_port(mock_slskd_port)
+    server.succeed(f"curl -sf http://127.0.0.1:{mock_slskd_port}/api/v0/transfers/uploads")
+
+    # Stop the normal monitor and start one pointed at the mock slskd
+    server.succeed("systemctl stop monitor-test || true")
+    time.sleep(1)
+    server.succeed(f"""
+      systemd-run --unit=monitor-slskd \
+        --setenv=JELLYFIN_URL=http://localhost:8096 \
+        --setenv=JELLYFIN_API_KEY={token} \
+        --setenv=QBITTORRENT_URL=http://localhost:8080 \
+        --setenv=CHECK_INTERVAL=1 \
+        --setenv=STREAMING_START_DELAY=1 \
+        --setenv=STREAMING_STOP_DELAY=1 \
+        --setenv=TOTAL_BANDWIDTH_BUDGET=50000000 \
+        --setenv=SERVICE_BUFFER=2000000 \
+        --setenv=DEFAULT_STREAM_BITRATE=10000000 \
+        --setenv=MIN_TORRENT_SPEED=100 \
+        --setenv=SLSKD_URL=http://127.0.0.1:{mock_slskd_port} \
+        --setenv=SLSKD_API_KEY={mock_slskd_key} \
+        {python} {monitor}
+    """)
+    time.sleep(2)
+    assert not is_throttled(), "Should start unthrottled (slskd reports no uploads)"
+
+    with subtest("Slskd uploads reduce torrent bandwidth budget"):
+        # Re-authenticate to get fresh token after previous tests
+        client_auth_result = json.loads(client.succeed(
+            f"curl -sf -X POST 'http://{server_ip}:8096/Users/AuthenticateByName' "
+            f"-d '@${jfLib.payloads.auth}' "
+            "-H 'Content-Type:application/json' "
+            f"-H 'X-Emby-Authorization:{client_auth}'"
+        ))
+        client_token = client_auth_result["AccessToken"]
+
+        # Start a single Jellyfin stream to establish a baseline torrent limit
+        playback_start = {{
+            "ItemId": movie_id,
+            "MediaSourceId": media_source_id,
+            "PlaySessionId": "test-play-session-slskd",
+            "CanSeek": True,
+            "IsPaused": False,
+        }}
+        start_cmd = (
+            f"curl -sf -X POST 'http://{server_ip}:8096/Sessions/Playing' "
+            f"-d '{json.dumps(playback_start)}' "
+            "-H 'Content-Type:application/json' "
+            f"-H 'X-Emby-Authorization:{client_auth}, Token={client_token}'"
+        )
+        client.succeed(start_cmd)
+        time.sleep(3)
+
+        assert is_throttled(), "Should throttle with streaming"
+        baseline_dl = get_alt_dl_limit()
+
+        # Now simulate active slskd uploads consuming 15 Mbps (1,875,000 bytes/s)
+        # by restarting the mock with two in-progress uploads at 937,500 bytes/s each.
+        server.succeed("pkill -f 'H(http' || true")
+        time.sleep(1)
+
+        # Restart the mock server with upload data; still validates the API key.
+        server.succeed(
+            f"{pkgs.python3}/bin/python -c \""
+            "import json, http.server, threading;"
+            f"EXPECTED_KEY='{mock_slskd_key}';"
+            "class H(http.server.BaseHTTPRequestHandler):"
+            " uploads_response=[{'username':'peer1','directories':[{'directory':'music',"
+            "'fileCount':2,'files':["
+            "{'averageSpeed':937500,'state':'InProgress','filename':'t1.flac','size':30000000,'username':'peer1'},"
+            "{'averageSpeed':937500,'state':'InProgress','filename':'t2.flac','size':25000000,'username':'peer1'}"
+            "]}]];"
+            " def do_GET(s):"
+            "  if s.path=='/api/v0/transfers/uploads':"
+            "   if s.headers.get('X-API-Key')!=EXPECTED_KEY:"
+            "    s.send_error(401);"
+            "    return;"
+            "   s.send_response(200);"
+            "   s.send_header('Content-Type','application/json');"
+            "   s.end_headers();"
+            "   s.wfile.write(json.dumps(H.uploads_response).encode());"
+            "  else: s.send_error(404);"
+            " def log_message(*a): pass;"
+            f"server=http.server.HTTPServer(('127.0.0.1',{mock_slskd_port}),H);"
+            "threading.Thread(target=server.serve_forever,daemon=True).start();"
+            "import signal; signal.pause()\" &"
+        )
+        server.wait_for_open_port(mock_slskd_port)
+        time.sleep(4)  # Let monitor poll and adjust
+
+        slskd_dl = get_alt_dl_limit()
+        # With 15 Mbps of slskd uploads consuming the shared budget, the
+        # remaining bandwidth for torrents must be lower than baseline.
+        assert slskd_dl < baseline_dl, \
+            f"Slskd uploads should reduce torrent budget. baseline={baseline_dl}, with_slskd={slskd_dl}"
+
+        # Stop Jellyfin playback
+        playback_stop = {{
+            "ItemId": movie_id,
+            "MediaSourceId": media_source_id,
+            "PlaySessionId": "test-play-session-slskd",
+            "PositionTicks": 50000000,
+        }}
+        stop_cmd = (
+            f"curl -sf -X POST 'http://{server_ip}:8096/Sessions/Playing/Stopped' "
+            f"-d '{json.dumps(playback_stop)}' "
+            "-H 'Content-Type:application/json' "
+            f"-H 'X-Emby-Authorization:{client_auth}, Token={client_token}'"
+        )
+        client.succeed(stop_cmd)
+        time.sleep(3)
+
+    # Clean up: stop mock slskd and restore normal monitor
+    server.succeed("pkill -f 'H(http' || true")
+    server.succeed("systemctl stop monitor-slskd || true")
+    time.sleep(1)
+    server.succeed(f"""
+      systemd-run --unit=monitor-test \
+        --setenv=JELLYFIN_URL=http://localhost:8096 \
+        --setenv=JELLYFIN_API_KEY={token} \
+        --setenv=QBITTORRENT_URL=http://localhost:8080 \
+        --setenv=CHECK_INTERVAL=1 \
+        --setenv=STREAMING_START_DELAY=1 \
+        --setenv=STREAMING_STOP_DELAY=1 \
+        --setenv=TOTAL_BANDWIDTH_BUDGET=50000000 \
+        --setenv=SERVICE_BUFFER=2000000 \
+        --setenv=DEFAULT_STREAM_BITRATE=10000000 \
+        --setenv=MIN_TORRENT_SPEED=100 \
+        {python} {monitor}
+    """)
+    time.sleep(2)
   '';
 }