/// <summary>
/// Carrega os itens com base nas chaves.
/// </summary>
/// <param name="keys">Chaves do itens que serão carregados.</param>
/// <returns>Dicionário dos itens encontrados.</returns>
public Dictionary <string, ProviderCacheItem> ReadThru(string[] keys)
{
Dictionary <string, ProviderCacheItem> dictionary = null;
try
{
dictionary = _provider.LoadFromSource(keys);
}
catch (Exception exception)
{
throw new OperationFailedException(ResourceMessageFormatter.Create(() => Properties.Resources.OperationFailedException_IReadThruProviderLoadFromSourceFailed).Format(), exception);
}
return(dictionary);
}
/// <summary>
/// Responsible for loading the object from the external data source.
/// Key is passed as parameter.
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
///
public void ReadThru(string key, out ProviderCacheItem item, OperationContext operationContext)
{
item = null;
try
{
if (_dsReader is ICustomReadThru)
{
if (operationContext.Contains(OperationContextFieldName.ReadThru))
{
((ICustomReadThru)_dsReader).DoReadThru =
Convert.ToBoolean(operationContext.GetValueByField(OperationContextFieldName.ReadThru));
}
if (operationContext.Contains(OperationContextFieldName.ReadThru))
{
((ICustomReadThru)_dsReader).ProviderName =
operationContext.GetValueByField(OperationContextFieldName.ReadThruProviderName) as string;
}
if (operationContext.Contains(OperationContextFieldName.GroupInfo))
{
GroupInfo gi = operationContext.GetValueByField(OperationContextFieldName.GroupInfo) as GroupInfo;
if (gi != null)
{
((ICustomReadThru)_dsReader).Group = gi.Group;
((ICustomReadThru)_dsReader).SubGroup = gi.SubGroup;
}
}
}
Stopwatch readThruWatch = new Stopwatch();
readThruWatch.Start();
_dsReader.LoadFromSource(key, out item);
readThruWatch.Stop();
double elapsedByReadThru = readThruWatch.Elapsed.TotalSeconds;
if (elapsedByReadThru > ServiceConfiguration.CommandExecutionThreshold &&
ServiceConfiguration.EnableCommandThresholdLogging)
{
if (_context.NCacheLog != null)
{
_context.NCacheLog.Warn("ReadThruProviderMgr.ReadThru",
"ReadThru took " + elapsedByReadThru +
" seconds to complete. Which is longer than expected.");
}
}
this._context.PerfStatsColl.IncrementReadThruPerSec();
}
catch (Exception e)
{
//Client doesnt throw the inner exception
//Client casts the thrown exception message into Operation failed Exception therefore the current inner exception will be casted
//in Operation failed exception > Inner Exception > Inner Exception
throw new OperationFailedException("IReadThruProvider.LoadFromSource failed. Error: " + e.ToString(), e);
}
finally
{
try
{
// reset all here
((ICustomReadThru)_dsReader).DoReadThru = false;
((ICustomReadThru)_dsReader).Group = null;
((ICustomReadThru)_dsReader).SubGroup = null;
((ICustomReadThru)_dsReader).ProviderName = null;
}
catch {}
}
}
