public static void ReleaseConnection(Driver driver)
{
Debug.Assert(driver != null);
MySqlPool pool = driver.Pool;
if (pool == null)
{
return;
}
pool.ReleaseConnection(driver);
}
/// <summary>
/// Remove drivers that have been idle for too long.
/// </summary>
public static void CleanIdleConnections(object obj)
{
List <Driver> oldDrivers = new List <Driver>();
lock (pools)
{
foreach (string key in pools.Keys)
{
MySqlPool pool = (pools[key] as MySqlPool);
oldDrivers.AddRange(pool.RemoveOldIdleConnections());
}
}
foreach (Driver driver in oldDrivers)
{
driver.Close();
}
}
private static void ClearPoolByText(string key)
{
lock (pools)
{
// if pools doesn't have it, then this pool must already have been cleared
if (!pools.ContainsKey(key))
{
return;
}
// add the pool to our list of pools being cleared
MySqlPool pool = (pools[key] as MySqlPool);
clearingPools.Add(pool);
// now tell the pool to clear itself
pool.Clear();
// and then remove the pool from the active pools list
pools.Remove(key);
}
}
public static MySqlPool GetPool(MySqlConnectionStringBuilder settings)
{
string text = GetKey(settings);
lock (pools)
{
MySqlPool pool;
pools.TryGetValue(text, out pool);
if (pool == null)
{
pool = new MySqlPool(settings);
pools.Add(text, pool);
}
else
{
pool.Settings = settings;
}
return(pool);
}
}
public static void RemoveClearedPool(MySqlPool pool)
{
Debug.Assert(clearingPools.Contains(pool));
clearingPools.Remove(pool);
}
/// <include file='docs/MySqlConnection.xml' path='docs/Open/*'/>
public override void Open()
{
if (State == ConnectionState.Open)
{
Throw(new InvalidOperationException(Resources.ConnectionAlreadyOpen));
}
#if !CF && !RT
// start up our interceptors
exceptionInterceptor = new ExceptionInterceptor(this);
commandInterceptor = new CommandInterceptor(this);
#endif
SetState(ConnectionState.Connecting, true);
AssertPermissions();
#if !CF && !RT
// if we are auto enlisting in a current transaction, then we will be
// treating the connection as pooled
if (Settings.AutoEnlist && Transaction.Current != null)
{
driver = DriverTransactionManager.GetDriverInTransaction(Transaction.Current);
if (driver != null &&
(driver.IsInActiveUse ||
!driver.Settings.EquivalentTo(this.Settings)))
{
Throw(new NotSupportedException(Resources.MultipleConnectionsInTransactionNotSupported));
}
}
#endif
try
{
MySqlConnectionStringBuilder currentSettings = Settings;
#if !CF
// Load balancing
if (ReplicationManager.IsReplicationGroup(Settings.Server))
{
if (driver == null)
{
ReplicationManager.GetNewConnection(Settings.Server, false, this);
}
else
{
currentSettings = driver.Settings;
}
}
#endif
if (Settings.Pooling)
{
MySqlPool pool = MySqlPoolManager.GetPool(currentSettings);
if (driver == null || !driver.IsOpen)
{
driver = pool.GetConnection();
}
procedureCache = pool.ProcedureCache;
}
else
{
if (driver == null || !driver.IsOpen)
{
driver = Driver.Create(currentSettings);
}
procedureCache = new ProcedureCache((int)Settings.ProcedureCacheSize);
}
}
catch (Exception ex)
{
SetState(ConnectionState.Closed, true);
throw;
}
// if the user is using old syntax, let them know
if (driver.Settings.UseOldSyntax)
{
MySqlTrace.LogWarning(ServerThread,
"You are using old syntax that will be removed in future versions");
}
SetState(ConnectionState.Open, false);
driver.Configure(this);
if (!(driver.SupportsPasswordExpiration && driver.IsPasswordExpired))
{
if (Settings.Database != null && Settings.Database != String.Empty)
{
ChangeDatabase(Settings.Database);
}
}
// setup our schema provider
schemaProvider = new ISSchemaProvider(this);
#if !CF
perfMonitor = new PerformanceMonitor(this);
#endif
// if we are opening up inside a current transaction, then autoenlist
// TODO: control this with a connection string option
#if !MONO && !CF && !RT
if (Transaction.Current != null && Settings.AutoEnlist)
{
EnlistTransaction(Transaction.Current);
}
#endif
hasBeenOpen = true;
SetState(ConnectionState.Open, true);
}
