update server core project

Emby.Server.Core/Data/BaseSqliteRepository.cs

@@ -0,0 +1,114 @@
+using System;
+using System.Data;
+using System.Threading;
+using System.Threading.Tasks;
+using MediaBrowser.Model.Logging;
+
+namespace Emby.Server.Core.Data
+{
+    public abstract class BaseSqliteRepository : IDisposable
+    {
+        protected SemaphoreSlim WriteLock = new SemaphoreSlim(1, 1);
+        protected readonly IDbConnector DbConnector;
+        protected ILogger Logger;
+
+        protected string DbFilePath { get; set; }
+
+        protected BaseSqliteRepository(ILogManager logManager, IDbConnector dbConnector)
+        {
+            DbConnector = dbConnector;
+            Logger = logManager.GetLogger(GetType().Name);
+        }
+
+        protected virtual bool EnableConnectionPooling
+        {
+            get { return true; }
+        }
+
+        protected virtual async Task<IDbConnection> CreateConnection(bool isReadOnly = false)
+        {
+            var connection = await DbConnector.Connect(DbFilePath, false, true).ConfigureAwait(false);
+
+            connection.RunQueries(new[]
+            {
+                "pragma temp_store = memory"
+
+            }, Logger);
+
+            return connection;
+        }
+
+        private bool _disposed;
+        protected void CheckDisposed()
+        {
+            if (_disposed)
+            {
+                throw new ObjectDisposedException(GetType().Name + " has been disposed and cannot be accessed.");
+            }
+        }
+
+        public void Dispose()
+        {
+            _disposed = true;
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected async Task Vacuum(IDbConnection connection)
+        {
+            CheckDisposed();
+
+            await WriteLock.WaitAsync().ConfigureAwait(false);
+
+            try
+            {
+                using (var cmd = connection.CreateCommand())
+                {
+                    cmd.CommandText = "vacuum";
+                    cmd.ExecuteNonQuery();
+                }
+            }
+            catch (Exception e)
+            {
+                Logger.ErrorException("Failed to vacuum:", e);
+
+                throw;
+            }
+            finally
+            {
+                WriteLock.Release();
+            }
+        }
+
+        private readonly object _disposeLock = new object();
+
+        /// <summary>
+        /// Releases unmanaged and - optionally - managed resources.
+        /// </summary>
+        /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool dispose)
+        {
+            if (dispose)
+            {
+                try
+                {
+                    lock (_disposeLock)
+                    {
+                        WriteLock.Wait();
+
+                        CloseConnection();
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Logger.ErrorException("Error disposing database", ex);
+                }
+            }
+        }
+
+        protected virtual void CloseConnection()
+        {
+
+        }
+    }
+}