private void OnTraceEventInternal(object sender, xlAmo.TraceEventArgs e)
{
// we are using CommandBegin as a "heartbeat" to check if the trace
// has started capturing events
if (!_traceStarted)
{
Log.Debug("{class} {mothod} Pending TraceEvent: {eventClass}", "QueryTraceEngineExcel", "OnTraceEventInternal", e.EventClass.ToString());
StopTimer();
_traceStarted = true;
_connection.Close(false);
_connection.Dispose();
_connection = null;
Status = QueryTraceStatus.Started;
TraceStarted?.Invoke(this, null);
var f = new System.IO.FileInfo(_trace.Parent.Name);
_friendlyServerName = f.Name;
}
else
{
Log.Debug("{class} {method} TraceEvent: {eventClass}", "QueryTraceEngineExcel", "OnTraceEventInternal", e.EventClass.ToString());
//OnTraceEvent(e);
_capturedEvents.Add(CreateTraceEventArg(e, _friendlyServerName));
if (e.EventClass == xlAmo.TraceEventClass.QueryEnd)
{
// Raise an event with the captured events
TraceCompleted?.Invoke(this, _capturedEvents);
// reset the captured events collection
_capturedEvents = new List <DaxStudioTraceEventArgs>();
}
}
}
private bool disposedValue = false; // To detect redundant calls
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
if (_trace != null)
{
_trace.OnEvent -= OnTraceEventInternal;
_trace?.Drop();
_trace?.Dispose();
_trace = null;
}
_connection?.Dispose();
_connection = null;
_server?.Disconnect();
_server?.Dispose();
_server = null;
if (_startingTimer != null)
{
_startingTimer.Stop();
_startingTimer.Elapsed -= OnTimerElapsed;
_startingTimer.Dispose();
_startingTimer = null;
}
}
disposedValue = true;
}
}
private void Start()
{
try
{
Log.Verbose("{class} {method} {message}", "QueryTraceEngine", "Start", "entering");
if (_trace != null)
{
if (_trace.IsStarted || Status == QueryTraceStatus.Starting || Status == QueryTraceStatus.Started)
{
return; // exit here if trace is already started
}
}
if (Status != QueryTraceStatus.Started)
{
Status = QueryTraceStatus.Starting;
}
Log.Verbose("{class} {method} {event}", "QueryTraceEngine", "Start", "Connecting to: " + _connectionString);
if (_connection != null)
{
_connection.Dispose();
}
ConfigureTrace(_connectionString, _connectionType, _sessionId, _applicationName, _databaseName, _filterForCurrentSession);
_connection = new ADOTabular.ADOTabularConnection(_connectionString, _connectionType);
try
{
_connection.Open();
}
catch (Exception ex)
{
Log.Error(ex, "{class} {method} {message}", "QueryTraceEngine", "Start (connection.open catch)", ex.Message);
// try again?
_connection.Open();
}
_trace = GetTrace();
SetupTrace(_trace, Events);
_trace.OnEvent += OnTraceEventInternal;
_trace.Start();
// create timer to "ping" the server with DISCOVER_SESSION requests
// until the trace events start to fire.
if (_startingTimer == null)
{
_startingTimer = new Timer();
}
_startingTimer.Interval = 500;
_startingTimer.Elapsed += OnTimerElapsed;
_startingTimer.Enabled = true;
_startingTimer.Start();
utcPingStart = DateTime.UtcNow;
// Wait for Trace to become active
Log.Verbose("{class} {method} {message}", "QueryTraceEngine", "Start", "exiting");
}
catch (Exception ex)
{
RaiseError(ex);
//Log.Error("{class} {method} {message}","QueryTraceEngine" , "Start", ex.Message);
}
}