Backport pull request #11986 from jellyfin/release-10.9.z

Use only 1 write connection/DB

Original-merge: cc4563a4779ff7e86526b09f5ac5a2e7ec71e56b

Merged-by: crobibero <cody@robibe.ro>

Backported-by: Joshua M. Boniface <joshua@boniface.me>

1 files changed, 62 insertions, 0 deletions

diff --git a/Emby.Server.Implementations/Data/ManagedConnection.cs b/Emby.Server.Implementations/Data/ManagedConnection.cs
new file mode 100644
index 000000000..860950b30
--- /dev/null
+++ b/Emby.Server.Implementations/Data/ManagedConnection.cs
@@ -0,0 +1,62 @@
+#pragma warning disable CS1591
+
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using Microsoft.Data.Sqlite;
+
+namespace Emby.Server.Implementations.Data;
+
+public sealed class ManagedConnection : IDisposable
+{
+    private readonly SemaphoreSlim? _writeLock;
+
+    private SqliteConnection _db;
+
+    private bool _disposed = false;
+
+    public ManagedConnection(SqliteConnection db, SemaphoreSlim? writeLock)
+    {
+        _db = db;
+        _writeLock = writeLock;
+    }
+
+    public SqliteTransaction BeginTransaction()
+        => _db.BeginTransaction();
+
+    public SqliteCommand CreateCommand()
+        => _db.CreateCommand();
+
+    public void Execute(string commandText)
+        => _db.Execute(commandText);
+
+    public SqliteCommand PrepareStatement(string sql)
+        => _db.PrepareStatement(sql);
+
+    public IEnumerable<SqliteDataReader> Query(string commandText)
+        => _db.Query(commandText);
+
+    public void Dispose()
+    {
+        if (_disposed)
+        {
+            return;
+        }
+
+        if (_writeLock is null)
+        {
+            // Read connections are managed with an internal pool
+            _db.Dispose();
+        }
+        else
+        {
+            // Write lock is managed by BaseSqliteRepository
+            // Don't dispose here
+            _writeLock.Release();
+        }
+
+        _db = null!;
+
+        _disposed = true;
+    }
+}