more portable restructuring

MediaBrowser.Server.Startup.Common/Persistence/SqliteExtensions.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Data;
+using System.Data.SQLite;
+using System.Threading.Tasks;
+using MediaBrowser.Model.Logging;
+
+namespace MediaBrowser.Server.Startup.Common.Persistence
+{
+    /// <summary>
+    /// Class SQLiteExtensions
+    /// </summary>
+    public static class SqliteExtensions
+    {
+        /// <summary>
+        /// Connects to db.
+        /// </summary>
+        public static async Task<IDbConnection> ConnectToDb(string dbPath, bool isReadOnly, bool enablePooling, int? cacheSize, ILogger logger)
+        {
+            if (string.IsNullOrEmpty(dbPath))
+            {
+                throw new ArgumentNullException("dbPath");
+            }
+
+            SQLiteConnection.SetMemoryStatus(false);
+
+            var connectionstr = new SQLiteConnectionStringBuilder
+            {
+                PageSize = 4096,
+                CacheSize = cacheSize ?? 2000,
+                SyncMode = SynchronizationModes.Normal,
+                DataSource = dbPath,
+                JournalMode = SQLiteJournalModeEnum.Wal,
+
+                // This is causing crashing under linux
+                Pooling = enablePooling && Environment.OSVersion.Platform == PlatformID.Win32NT,
+                ReadOnly = isReadOnly
+            };
+
+            var connectionString = connectionstr.ConnectionString;
+
+            if (!enablePooling)
+            {
+                logger.Info("Sqlite {0} opening {1}", SQLiteConnection.SQLiteVersion, connectionString);
+            }
+
+            var connection = new SQLiteConnection(connectionString);
+
+            await connection.OpenAsync().ConfigureAwait(false);
+
+            return connection;
+        }
+    }
+}