private void OnTimerElapsed(object sender, ElapsedEventArgs e)
{
try
{
Execute.OnUIThread(() => {
// lock to prevent multiple threads attempting to open the connection
lock (connectionLockObj)
{
if (_connection.State != System.Data.ConnectionState.Open)
{
_connection.Open();
}
_connection.Ping();
}
});
}
catch (Exception ex)
{
Execute.OnUIThread(() => RaiseError(ex));
//TODO stop trace and send message to reset UI
}
finally
{
// if past timeout then exit and display error
if ((DateTime.UtcNow - utcPingStart).Seconds > 30)
{
_startingTimer.Stop();
DisposeTrace();
RaiseError("Timeout exceeded attempting to start Trace");
}
}
}
//Task task;
//private void PingUntilTraceStarts()
//{
// _pingTraceCancellationToken = new System.Threading.CancellationTokenSource();
// // cancels the ping loop after the specified number of timeout seconds from global options
// _pingTraceCancellationToken.CancelAfter(new TimeSpan(0, 0, _globalOptions.TraceStartupTimeout));
// task = Task.Run(async () => // <- marked async
// {
// while (true)
// {
// PingTrace(_pingTraceCancellationToken);
// await Task.Delay(10000, _pingTraceCancellationToken.Token); // <- await with cancellation
// }
// }, _pingTraceCancellationToken.Token);
//}
//private void PingTrace(System.Threading.CancellationTokenSource token)
//{
// try
// {
// var policy = Policy
// .Handle<Exception>()
// .WaitAndRetry(
// 3,
// retryAttempt => TimeSpan.FromMilliseconds(Math.Pow(2, retryAttempt) * 100),
// (exception, timeSpan, context) =>
// {
// Log.Error(exception, "{class} {method}", "QueryTraceEngine", "PingTrace");
// System.Diagnostics.Debug.WriteLine("Error pinging trace connection: " + exception.Message);
// // TODO - should we raise event aggregator
// }
// );
// policy.Execute(() =>
// {
// if (_connection.State != System.Data.ConnectionState.Open) _connection.Open();
// _connection.Ping();
// Log.Verbose("{class} {method} {message}", "QueryTraceEngine", "PingTrace", "Pinging Connection");
// });
// }
// catch (Exception ex)
// {
// Execute.OnUIThread(() => RaiseError(ex));
// //TODO stop trace and send message to reset UI
// }
// finally
// {
// // if past timeout then exit and display error
// if ((DateTime.UtcNow - utcPingStart).Seconds > this.TraceStartTimeoutSecs)
// {
// _startingTimer.Stop();
// DisposeTrace();
// Execute.OnUIThread(() => RaiseError("Timeout exceeded attempting to start Trace"));
// }
// }
//}
private void OnTimerElapsed(object sender, ElapsedEventArgs e)
{
try
{
//Execute.OnUIThread(() => { // TODO - why did I put this on the UI thread???
// lock to prevent multiple threads attempting to open the connection
lock (connectionLockObj)
{
var policy = Policy
.Handle <Exception>()
.WaitAndRetry(
3,
retryAttempt => TimeSpan.FromMilliseconds(Math.Pow(2, retryAttempt) * 100),
(exception, timeSpan, context) => {
Log.Error(exception, "{class} {method}", "QueryTraceEngine", "OnTimerElapsed");
System.Diagnostics.Debug.WriteLine("Error pinging trace connection: " + exception.Message);
// TODO - should we raise event aggregator
}
);
policy.Execute(() => {
if (_connection.State != System.Data.ConnectionState.Open)
{
_connection.Open();
}
_connection.Ping();
Log.Verbose("{class} {method} {message}", "QueryTraceEngine", "OnTimerElapsed", "Pinging Connection");
});
}
//});
}
catch (Exception ex)
{
Execute.OnUIThread(() => RaiseError(ex));
//TODO stop trace and send message to reset UI
}
finally
{
// if past timeout then exit and display error
if ((DateTime.UtcNow - utcPingStart).Seconds > this.TraceStartTimeoutSecs)
{
_startingTimer.Stop();
DisposeTrace();
RaiseError("Timeout exceeded attempting to start Trace");
}
}
}
private void OnTimerElapsed(object sender, ElapsedEventArgs e)
{
Log.Debug("{class} {method} {event}", "QueryTraceEngineExcel", "OnTimerElapsed", "Ping");
//HACK - wait 1.5 seconds to allow trace to start
// using the ping method thows a connection was lost error when starting a second trace
Execute.OnUIThread(() => _connection.Ping());
//Execute.OnUIThread(() => ServerPing());
// if past timeout then exit and display error
if ((utcPingStart - DateTime.UtcNow).Seconds > TraceStartTimeoutSecs)
{
_startingTimer.Stop();
_trace.Drop();
OutputError("Timeout exceeded attempting to start Trace");
Log.Warning("{class} {method} {event}", "QueryTraceEngineExcel", "OnTimerElapsed", "Timeout exceeded attempting to start Trace");
}
//StopTimer();
//Status = QueryTraceStatus.Started;
//_traceStarted = true;
//if (TraceStarted != null)
// TraceStarted(this, null);
}