public DbConnection GetConnection(object key, ConnectionLevel level)
{
lock (PoolLocker)
{
if (_ps != PoolState.Run)
{
throw new StateException();//服务状态错误
}
if (useConns.Count == MaxConnectionFromPool)
{
throw new PoolFullException();//连接池已经饱和，不能提供连接
}
if (useConns.ContainsKey(key))
{
throw new KeyExecption();//一个key只能申请一个连接
}
switch (level)
{
case ConnectionLevel.ReadOnly:
return(GetConnectionByReadOnly(key));
case ConnectionLevel.High:
return(GetConnectionByHigh(key));
case ConnectionLevel.None:
return(GetConnectionByNone(key));
default:
return(GetConnectionByBase(key));
}
}
}
public DbConnection GetConnection(object key, ConnectionLevel level, Connector conn)
{
try
{
if (conn == null)
{
return(null);
}
if (conn.DbConnection.State != ConnectionState.Closed)
{
return(null);
}
conn.Repeat();
useConns.Add(key, conn);
if (level == ConnectionLevel.ReadOnly)
{
conn.CanAllocation = false;
conn.IsRepeat = false;
}
}
catch
{
throw new OccasionExecption();
}
finally
{
UpdatePoolState();
}
return(conn.DbConnection);
}
public DbAgent(string name, string constr, bool state, ConnectionLevel level = ConnectionLevel.Single, int timeout = 30)
{
Name = name;
SetConnectionString(constr);
SetState(state);
ConnectionLevel = level;
RunTimeout = timeout;
}