/// <summary>
/// Flush the data and check file size for rolling.
/// </summary>
private void FlushCheck()
{
lock (_lockerFlush)
{
// This is to flush the writer periodically after every N number of times.
if (_iterativeFlushCount % _iterativeFlushPeriod == 0)
{
_writer.Flush();
_iterativeFlushCount = 1;
}
else
{
_iterativeFlushCount++;
}
// This rolls the log file. e.g. Creates a new log file if the current one
// exceeds a logfile size.
if (_rollFile && FileHelper.GetSizeInMegs(_filepath) > _maxFileSizeInMegs)
{
Try.Catch(() =>
{
string searchPath = _filepath.Substring(0, _filepath.LastIndexOf('.'));
FileInfo file = new FileInfo(_filepath);
string[] files = Directory.GetFiles(file.DirectoryName, searchPath + "*", SearchOption.TopDirectoryOnly);
_filepathUnique = string.Format("{0}-part{1}{2}", searchPath, files.Length.ToString(), file.Extension);
_writer.Flush();
_writer.Close();
_writer = new StreamWriter(_filepathUnique);
});
}
}
}
public static void Stop()
{
Try.Catch(() => { httpServer?.Stop(); });
//Try.Catch(() => { webSocketServer?.Stop(); });
Try.Catch(Logger.StopLoggingThreads);
Try.Catch(() => { db?.Dispose(); });
}
protected override void Dispose(bool disposing)
{
Try.Swallow(() => { pipe?.WaitForPipeDrain(); });
Try.Catch(() => { pipe?.Dispose(); });
Try.Catch(() => { pipeServer?.Dispose(); });
isDisposed = true;
}
public static void Stop()
{
isStopped = true;
//Try.Catch(() => { httpServer?.Stop(); });
Try.Catch(() => { webSocketServer?.Stop(); });
Try.Catch(Logger.StopLoggingThreads);
Try.Catch(() => { hostConnect?.Disconnect(); });
}
private static ITry <int, PersonParsingError> ParseAge(string age)
{
var numericAge = Try.Catch <int, Exception>(_ => Convert.ToInt32(age));
var validAge = numericAge.MapError(_ => PersonParsingError.AgeNotANumber);
var positiveAge = validAge.Where(a => a >= 0, _ => PersonParsingError.AgeNegative);
var reasonableAge = positiveAge.Where(a => a < 140, _ => PersonParsingError.AgeTooHigh);
return(reasonableAge);
}
private static ITry <decimal, PersonParsingError> ParseHeight(string height)
{
var numericHeight = Try.Catch <decimal, Exception>(_ => Convert.ToDecimal(height));
var validHeight = numericHeight.MapError(_ => PersonParsingError.HeightNotANumber);
var positiveHeight = validHeight.Where(h => h >= 0, _ => PersonParsingError.HeightNegative);
var reasonableHeight = positiveHeight.Where(h => h < 300, _ => PersonParsingError.HeightTooHigh);
return(reasonableHeight);
}
/// <summary>
/// Stop this timer and send notification that this task is complete.
/// </summary>
private void Stop()
{
Try.Catch(() => TimerInfo.Stop());
if (OnTaskCompleted != null)
{
Task copy = Copy(this);
OnTaskCompleted(copy);
}
}
/// <summary>
/// Execute the action in try catch.
/// </summary>
/// <param name="action"></param>
private void Execute(Action action)
{
try
{
action();
}
catch (Exception ex)
{
Try.Catch(() => Logging.Logger.Error("Unable to load/save settings", ex));
}
}
private void PartialWakeNotifier_FormClosing(object sender, FormClosingEventArgs e)
{
Try.Catch(() =>
{
resetTopTimeout?.Cancel();
});
Try.Catch(() =>
{
resetTop2Timeout?.Cancel();
});
}
private void RaiseOnCloseEvent()
{
lock (closeLock)
{
if (closed)
{
return;
}
closed = true;
}
Try.Catch(() => { OnClose(this, new EventArgs()); });
}
public void Catch()
{
var s = Try.Catch <int, Exception>(_ => 42);
Assert.True(s.IsSuccess);
Assert.Equal(42, s.Get());
var e = Try.Catch <int, Exception>(_ => throw Exception);
Assert.True(e.IsError);
Assert.Throws <NotImplementedException>(() => e.Get());
}
public void Stop()
{
Try.Catch(() => { thrCertificateMaintainer?.Abort(); });
if (httpServer != null)
{
httpServer.Stop();
httpServer.Join(1000);
}
// webSocketServer does not support closing/stopping
webSocketServer = null;
}
/// <summary>
/// Runs the application provided.
/// </summary>
/// <param name="app">The application to run.</param>
/// <param name="args">Command line arguments.</param>
/// <param name="requireConfigFiles">Whether or not to throw error if the config files are not available.</param>
/// <param name="decorations">Decorations around the application. e.g. "diagnostics,statusupdates"</param>
public static BoolMessageItem Run(IApp app, string[] args, bool requireConfigFiles, string decorations)
{
// Validation.
if (app == null)
{
throw new ArgumentNullException("ApplicationTemplate to run was not supplied.");
}
// Set the configfile requirement flag.
app.Settings.RequireConfigs = requireConfigFiles;
// Replace the application with the decorator.
// This provides diagnostics, status updates out of the box, shutdown of logging. etc.
app = new AppDecorator(decorations, app);
BoolMessageItem result = null;
bool validArgs = false;
try
{
// Validate the arguments.
result = app.AcceptArgs(args);
validArgs = result.Success;
if (!result.Success)
{
return(result);
}
// Initalize.
app.Init();
app.InitComplete();
// Execute.
result = app.Execute();
app.ExecuteComplete();
}
catch (Exception ex)
{
Try.HandleException(ex);
}
finally
{
Try.Catch(() =>
{
if (validArgs)
{
app.ShutDown();
}
});
}
return(result);
}
/// <summary>
/// Whether or not the csv file can be loaded.
/// </summary>
/// <param name="text">The csv formatted text string.</param>
/// <param name="hasHeaders">Whether or not the csv text has headers.</param>
/// <param name="isReadOnly">Whether or not to make the parsed doc readonly.</param>
/// <param name="parseMap">Whether or not to parse the data as a list of dictionaries.</param>
/// <returns>A CsvDoc</returns>
public static BoolMessageItem <CsvDoc> CanLoad(string text, bool hasHeaders, bool isReadOnly, string delimeter)
{
CsvDoc doc = null;
bool loaded = true;
string message = string.Empty;
Try.Catch(() => doc = Load(text, hasHeaders, isReadOnly, delimeter), (ex) =>
{
loaded = false;
message = ex.Message;
});
return(new BoolMessageItem <CsvDoc>(doc, loaded, message));
}
public void TryCatch_1()
{
// Setup
var mock = new Mock <ITryCatchFinally>();
var m = mock.Object;
// Act
Try.Catch(m.Try, m.Catch);
// Assert
mock.Verify(m => m.Try(), Times.Once);
mock.Verify(m => m.Catch(It.IsAny <Exception>()), Times.Never);
}
/// <summary>
/// Persists a batch of log events to a database table
/// </summary>
public override void Flush()
{
lock (_uncommitedList)
{
Try.Catch(() =>
{
// Let the Repository take care of CRUD actions.
_repo.Create(_uncommitedList);
// Clear the internal uncomitted log event list
_uncommitedList.Clear();
});
}
}
private static void SystemEvents_DisplaySettingsChanged(object sender, EventArgs e)
{
try
{
screenCapturer?.DisplaySettingsChanged();
Try.Catch(() => { dxgiDuplicator?.Dispose(); });
dxgiDuplicator = new DxgiOutputDuplicator(0, 0);
desktopInfo = DxgiOutputDuplicator.GetDesktopInfo();
}
catch (Exception ex)
{
Logger.Debug(ex);
}
}
private static void Application_ApplicationExit(object sender, EventArgs e)
{
Logger.Info("Application_ApplicationExit event");
isExiting = true;
Try.Catch(() => { Microsoft.Win32.SystemEvents.DisplaySettingsChanged -= SystemEvents_DisplaySettingsChanged; });
// It really is highly unlikely for thrMain to exit on its own, as it blocks trying to read from shared memory
Try.Catch(() => { thrMain?.Join(25); });
Try.Catch(() => { thrMain?.Abort(); });
Try.Catch(() => { thrMonitorService?.Abort(); });
Try.Catch(() => { thrDesktopCapture?.Abort(); });
Try.Catch(() => { screenCapturer?.Dispose(); });
Try.Catch(() => { dxgiDuplicator?.Dispose(); });
//Try.Catch(() => { inputEmulator?.Dispose(); });
}
public static void Stop()
{
isStopped = true;
//Try.Catch(() => { httpServer?.Stop(); });
Try.Catch(Logger.StopLoggingThreads);
Try.Catch(() => { hostConnect?.Disconnect(); });
lock (webSocketConnectionsLock)
{
foreach (SHRDWebSocketClientHandler clientHandler in webSocketConnections.Values)
{
clientHandler.CloseSocket();
}
webSocketConnections.Clear();
}
}
public static void HandlingExceptionsWithCatch(decimal number, decimal divisor)
{
// Catches any exception and stores the single exception into the try.
// This is useful for handling individual errors, but cannot be aggregated.
ITry <decimal, Exception> divisionHandlingAllExceptions = Try.Catch <decimal, Exception>(_ => number / divisor);
// Only catches a specific exception. Notice that the error type is the specific type of exception, not a collection of exceptions.
ITry <decimal, DivideByZeroException> divisionHandlingDividingByZero = Try.Catch <decimal, DivideByZeroException>(_ => number / divisor);
// Catch also has an overload which allows recovering in case of exception. Serves as standard try/catch, but returns a value.
decimal divisionResult = Try.Catch <decimal, DivideByZeroException>(
_ => number / divisor,
exception => 0
);
}
public static void SetProperty(object obj, PropertyInfo prop, object propVal, bool catchException)
{
if (prop != null && prop.CanWrite)
{
if (!catchException)
{
prop.SetValue(obj, propVal, null);
return;
}
Try.Catch(delegate
{
prop.SetValue(obj, propVal, null);
}, null);
}
}
/// <summary>
/// Set the object properties using the prop name and value.
/// </summary>
/// <param name="obj">Object whose property will be set.</param>
/// <param name="prop">Property information.</param>
/// <param name="propVal">Property value to set.</param>
/// <param name="catchException">Try to catch any exception and
/// not throw it to the caller.</param>
public static void SetProperty(object obj, PropertyInfo prop, object propVal, bool catchException)
{
// Correct property with write access
if (prop != null && prop.CanWrite)
{
if (!catchException)
{
prop.SetValue(obj, propVal, null);
}
else
{
Try.Catch(() => prop.SetValue(obj, propVal, null), null);
}
}
}
public void TryCatch_2()
{
// Setup
var ex = new Exception();
var mock = new Mock <ITryCatchFinally>();
mock.Setup(m => m.Try()).Throws(ex);
var m = mock.Object;
// Act
Try.Catch(m.Try, m.Catch);
// Assert
mock.Verify(m => m.Try(), Times.Once);
mock.Verify(
m => m.Catch(It.Is <Exception>(e => ReferenceEquals(e, ex))),
Times.Once);
}
private static void desktopCaptureThreadRunner()
{
try
{
byte[] compressToBuffer = null;
while (!isExiting && static_sm != null)
{
Thread.Sleep(1);
DesktopCaptureTask task;
while (!isExiting && static_sm != null && desktopCaptureTasks.TryDequeue(out task))
{
turbojpegCLI.SubsamplingOption subsamp = GetSubsamplingOptionFromImgFlags(task.imgFlags);
FragmentedImage img = CaptureRawDesktopImage(task.imgFlags.HasFlag(ImgFlags.Refresh));
SharedMemoryStream sm = static_sm;
if (sm == null)
{
break;
}
lock (sm)
{
img.WriteToDataStream(static_sm, ref compressToBuffer, task.jpegQuality, subsamp);
}
}
}
}
catch (ThreadAbortException) { }
catch (StreamDisconnectedException ex)
{
Logger.Info("Exiting because: " + ex.Message);
}
catch (Exception ex)
{
Logger.Debug(ex);
Logger.Info("Exiting due to main thread runner exception");
}
finally
{
Try.Catch(() => { dxgiDuplicator?.Dispose(); });
Try.Catch(() => { screenCapturer?.Dispose(); });
//Try.Catch(() => { inputEmulator?.Dispose(); });
RobustExit();
}
}
public void TryCatch_3()
{
// Setup
var ex = new ArgumentOutOfRangeException();
var mock = new Mock <ITryCatchFinally>();
mock.Setup(m => m.Try()).Throws(ex);
var m = mock.Object;
Assert.Throws <ArgumentOutOfRangeException>(() =>
{
// Act
Try.Catch <InvalidCastException>(m.Try, m.Catch);
});
// Assert
mock.Verify(m => m.Try(), Times.Once);
mock.Verify(m => m.Catch(It.IsAny <Exception>()), Times.Never);
}
private static IEnumerable <Regex> GetIgnoreRegexes(string ignoreFilePath)
{
try
{
if (!File.Exists(ignoreFilePath))
{
return(new Regex[0]);
}
var lines = File.ReadAllLines(ignoreFilePath);
var regexes = lines
.Where(l => !l.IsNullOrWhiteSpace())
.Select(l => Try.Catch <Exception, Regex>(() => new Regex(l), ex => { Debug.WriteLine($"{nameof(GetIgnoreRegexes)}: {ex}"); return(null); }))
.NotNulls();
return(new HashSet <Regex>(regexes));
}
catch (Exception ex)
{
Debug.WriteLine($"{nameof(GetIgnoreRegexes)}: {ex}");
return(new Regex[0]);
}
}
void Success_Basic()
{
Func <string> lambda = () => "successful result.";
Try <string> succ = lambda.Try();
Assert.Equal("successful result.", succ.GetOrThrow());
Assert.Equal("successful result..", succ.Convert((s) => s + ".", (e) => "boo"));
Assert.Equal("successful result.", succ.Catch((Exception e) => "caught").GetOrThrow());
Assert.Equal("successful result.!", succ.Then((s) => s + "!").GetOrThrow());
Try <string> thend1 = succ.Then((s) => "S");
Assert.Equal("S", thend1.GetOrThrow());
Try <string> thend2 = succ.Then((s) => "S", (e) => "F");
Assert.Equal("S", thend2.GetOrThrow());
Try <string> failOnSuccess = succ.Then <string>((s) => { throw new TestException(); });
Assert.Throws <TestException>(() => failOnSuccess.GetOrThrow());
}
public void Stop()
{
Try.Catch(() => { srv.Stop(); });
}
protected override void stopServer()
{
Try.Catch(() => { thrFtpBackup?.Abort(); });
}
private void readSharedMemory(object args)
{
SharedMemoryStream mySm = (SharedMemoryStream)args;
try
{
while (sm == mySm)
{
try
{
byte cmdByte = (byte)sm.ReadByte();
Command cmd = (Command)cmdByte;
// Handle message from Streamer process.
// TODO: Refactor the responses to use a generic wrapper class, e.g.
// AsyncLoadingObject<FragmentedImage> newFrame = ...;
// newFrame.Loaded(img);
// if (newFrame.Wait(abortFlag, out ...))
// return ...;
switch (cmd)
{
case Command.GetScreenCapture:
FragmentedImage img = new FragmentedImage(sm);
newFrame.Produce(img);
break;
case Command.GetDesktopInfo:
DesktopInfo di = new DesktopInfo(sm);
newDesktopInfo.Produce(di);
break;
case Command.Error_SyntaxError:
case Command.Error_CommandCodeUnknown:
case Command.Error_Unspecified:
case Command.StartStreaming:
case Command.StopStreaming:
case Command.AcknowledgeFrame:
case Command.ReproduceUserInput:
case Command.SetStreamSettings:
case Command.GetStreamSettings:
default:
Logger.Info("Received unexpected byte from Streamer process: " + cmd);
// TODO: End the Streamer process now and start a new one, because we have just entered an undefined state.
break;
}
}
catch (ThreadAbortException) { throw; }
catch (StreamDisconnectedException) { throw; }
catch (Exception ex)
{
Logger.Debug(ex);
}
}
}
catch (ThreadAbortException) { }
catch (StreamDisconnectedException)
{
Logger.Info("Read Shared Memory thread detected stream close (" + mySm.uniqueId + ")");
}
catch (Exception ex)
{
Logger.Debug(ex);
}
finally
{
Try.Catch(() => { mySm?.Dispose(); });
RaiseOnCloseEvent();
}
}
