private void MonitorPITags()
{
DataPipeHandler archiveDataPipeHandler = null;
DataPipeHandler snapshotDataPipeHandler = null;
try
{
if (string.IsNullOrEmpty(PIServerName))
{
throw new PIServerNotFoundException();
}
else
{
PIServer piserver;
var piConnectionManager = PiConnectionMgr.ConnectAndGetServer(PIServerName, out piserver);
// get the tag we want to monitor
var pointList = PIPoint.FindPIPoints(piserver, TagList).ToList();
// event pipe for archive modifications
var archive = AFDataPipeType.Archive;
archiveDataPipeHandler = new DataPipeHandler(new PIConsoleDataObserver(archive), archive);
archiveDataPipeHandler.AddSignupsWithInitEvents(pointList);
// event pipe for snpshot modifications
var snapshot = AFDataPipeType.Snapshot;
snapshotDataPipeHandler = new DataPipeHandler(new PIConsoleDataObserver(snapshot), snapshot);
snapshotDataPipeHandler.AddSignupsWithInitEvents(pointList);
// archive data pipe is for demonstrative use
// you may only need the snapshot in your application, this depends on your use case
archiveDataPipeHandler.StartListening(TimeSpan.FromSeconds(Interval));
snapshotDataPipeHandler.StartListening(TimeSpan.FromSeconds(Interval));
Logger.InfoFormat("Listening for data changes started. Checking every {0}s", Interval);
}
}
catch (Exception ex)
{
Logger.Error(ex);
}
finally
{
// here the method will wait until _terminateRequest.Set() before terminating
_terminateRequest.WaitOne();
// in case you don't know this is called null propagation
// its equivalent to if x!=null x.Dispose()
archiveDataPipeHandler?.Dispose();
snapshotDataPipeHandler?.Dispose();
}
}
private void MonitorAFAttributes()
{
DataPipeHandler afDataPipeHandler = null;
try
{
//connect to AF Server
if (string.IsNullOrEmpty(AFServerName))
{
throw new AFServerNotFoundException();
}
else
{
AFDatabase database;
var _afConnectionManager = AfConnectionHelper.ConnectAndGetDatabase(AFServerName, AFDatabaseName,
out database);
// get the attributes that will be monitored
IDictionary <string, string> findAttributesErrors;
var attributes = AFAttribute.FindAttributesByPath(AttributesList, database, out findAttributesErrors);
// in case there was errors in the search we display them
if (findAttributesErrors != null && findAttributesErrors.Count > 0)
{
findAttributesErrors.ToList().ForEach(e => Logger.ErrorFormat("{0},{1}", e.Key, e.Value));
}
afDataPipeHandler = new DataPipeHandler(new AFConsoleDataObserver());
afDataPipeHandler.AddSignupsWithInitEvents(attributes);
afDataPipeHandler.StartListening(TimeSpan.FromSeconds(Interval));
Logger.InfoFormat("Listening for data changes started. Checking every {0}s", Interval);
}
}
catch (Exception ex)
{
Logger.Error(ex);
}
finally
{
_terminateRequest.WaitOne();
// null propagation operator, this is same as x!=null x.Dispose()
afDataPipeHandler?.Dispose();
}
}