Merge pull request #32 from peppy/allow-pool-adjust

Allow changing common connection pooling settings

Author: smoogipoo

osu.Server.QueueProcessor.sln.DotSettings

@@ -843,6 +843,7 @@ See the LICENCE file in the repository root for full licence text.
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpPlaceEmbeddedOnSameLineMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpRenamePlacementToArrangementMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpUseContinuousIndentInsideBracesMigration/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002EMemberReordering_002EMigrations_002ECSharpFileLayoutPatternRemoveIsAttributeUpgrade/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EAddAccessorOwnerDeclarationBracesMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EAlwaysTreatStructAsNotReorderableMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002ECSharpPlaceAttributeOnSameLineMigration/@EntryIndexedValue">True</s:Boolean>

osu.Server.QueueProcessor/DatabaseAccess.cs

@@ -25,10 +25,13 @@ public static MySqlConnection GetConnection()
                 string user = (Environment.GetEnvironmentVariable("DB_USER") ?? "root");
                 string password = (Environment.GetEnvironmentVariable("DB_PASS") ?? string.Empty);
                 string name = (Environment.GetEnvironmentVariable("DB_NAME") ?? "osu");
+                bool pooling = string.Equals(Environment.GetEnvironmentVariable("DB_POOLING"), Boolean.FalseString, StringComparison.InvariantCultureIgnoreCase)
+                               && Environment.GetEnvironmentVariable("DB_POOLING") != "0";
+                int maxPoolSize = int.Parse(Environment.GetEnvironmentVariable("DB_MAX_POOL_SIZE") ?? "100");
 
                 string passwordString = string.IsNullOrEmpty(password) ? string.Empty : $"Password={password};";
 
-                connectionString = $"Server={host};Port={port};Database={name};User ID={user};{passwordString}ConnectionTimeout=5;ConnectionReset=false;Pooling=true;";
+                connectionString = $"Server={host};Port={port};Database={name};User ID={user};{passwordString}ConnectionTimeout=5;ConnectionReset=false;Pooling={pooling};Max Pool Size={maxPoolSize};";
             }
 
             var connection = new MySqlConnection(connectionString);