/// <summary>
///
/// </summary>
/// <param name="mode">режим работы</param>
/// <param name="pollPeriod">интервал опроса бд</param>
/// <param name="invalidator">объект, инвалидирующий кеш</param>
/// <param name="connectionName">имя строки подключения</param>
/// <param name="dueTime">отложенный запуск (ms)</param>
/// <param name="onInvalidate">вызывается при удалении старых записей</param>
public QPCacheItemWatcher(InvalidationMode mode, TimeSpan pollPeriod, IContentInvalidator invalidator,
string connectionName = "qp_database",
int dueTime = 0,
bool useTimer = true,
Func <Tuple <int[], string[]>, bool> onInvalidate = null)
{
Throws.IfArgumentNull(_ => connectionName);
Throws.IfArgumentNull(_ => invalidator);
_dueTime = TimeSpan.FromMilliseconds(dueTime);
_pollPeriod = pollPeriod;
if (useTimer)
{
_timer = new Timer(OnTick, null, 0, Timeout.Infinite);
}
var connectionString = ConfigurationManager.ConnectionStrings[connectionName];
try
{
_connectionString = connectionString.ConnectionString;
}
catch (Exception ex)
{
throw new InvalidOperationException("access to _connectionString.ConnectionString caused an exception", ex);
}
Throws.IfArgumentNullOrEmpty(_connectionString, nameof(_connectionString));
_trackers = new ConcurrentBag <CacheItemTracker>();
_mode = mode;
_invalidator = invalidator;
_onInvalidate = onInvalidate;
Throws.IfArgumentNull(_ => _connectionString);
}
