private static void Write(
LogMessageType messageType,
string sourceName,
LogMessageReceivedEventArgs eventArgs,
string outputMessage,
ConsoleColor color)
{
// Select the writer based on the message type
var writer = IsConsolePresent
? messageType.HasFlag(LogMessageType.Error) ? TerminalWriters.StandardError : TerminalWriters.StandardOutput
: TerminalWriters.None;
// Set the writer to Diagnostics if appropriate (Error and Debugging data go to the Diagnostics debugger
// if it is attached at all
if (IsDebuggerAttached &&
(IsConsolePresent == false || messageType.HasFlag(LogMessageType.Debug) ||
messageType.HasFlag(LogMessageType.Error)))
{
writer = writer | TerminalWriters.Diagnostics;
}
// Check if we really need to write this out
if (writer == TerminalWriters.None)
{
return;
}
// Further format the output in the case there is an exception being logged
if (writer.HasFlag(TerminalWriters.StandardError) && eventArgs.Exception != null)
{
try
{
outputMessage =
$"{outputMessage}{Environment.NewLine}{eventArgs.Exception.Stringify().Indent()}";
}
catch
{
// Ignore
}
}
// Filter output messages via events
var displayingEventArgs = new LogMessageDisplayingEventArgs(eventArgs);
OnLogMessageDisplaying?.Invoke(sourceName, displayingEventArgs);
if (displayingEventArgs.CancelOutput == false)
{
outputMessage.WriteLine(color, writer);
}
}
/// <summary>
/// Logs a message
/// </summary>
/// <param name="messageType">Type of the message.</param>
/// <param name="message">The text.</param>
/// <param name="sourceName">Name of the source.</param>
/// <param name="extendedData">The extended data. Could be an exception, or a dictionary of properties or anything the user specifies.</param>
/// <param name="callerMemberName">Name of the caller member.</param>
/// <param name="callerFilePath">The caller file path.</param>
/// <param name="callerLineNumber">The caller line number.</param>
private static void LogMessage(
LogMessageType messageType,
string message,
string sourceName,
object extendedData,
string callerMemberName,
string callerFilePath,
int callerLineNumber)
{
lock (SyncLock)
{
#region Color and Prefix
ConsoleColor color;
string prefix;
// Select color and prefix based on message type
// and settings
switch (messageType)
{
case LogMessageType.Debug:
color = Settings.DebugColor;
prefix = Settings.DebugPrefix;
break;
case LogMessageType.Error:
color = Settings.ErrorColor;
prefix = Settings.ErrorPrefix;
break;
case LogMessageType.Info:
color = Settings.InfoColor;
prefix = Settings.InfoPrefix;
break;
case LogMessageType.Trace:
color = Settings.TraceColor;
prefix = Settings.TracePrefix;
break;
case LogMessageType.Warning:
color = Settings.WarnColor;
prefix = Settings.WarnPrefix;
break;
case LogMessageType.Fatal:
color = Settings.FatalColor;
prefix = Settings.FatalPrefix;
break;
default:
color = Settings.DefaultColor;
prefix = new string(' ', Settings.InfoPrefix.Length);
break;
}
#endregion
#region Create and Format the Output
var sequence = _loggingSequence;
var date = DateTime.UtcNow;
_loggingSequence++;
var loggerMessage = string.IsNullOrWhiteSpace(message) ?
string.Empty : message.RemoveControlCharsExcept('\n');
var friendlySourceName = string.IsNullOrWhiteSpace(sourceName)
? string.Empty
: sourceName.SliceLength(sourceName.LastIndexOf('.') + 1, sourceName.Length);
var outputMessage = string.IsNullOrWhiteSpace(sourceName) ? loggerMessage : $"[{friendlySourceName}] {loggerMessage}";
outputMessage = string.IsNullOrWhiteSpace(Settings.LoggingTimeFormat) ?
$" {prefix} >> {outputMessage}" :
$" {date.ToLocalTime().ToString(Settings.LoggingTimeFormat)} {prefix} >> {outputMessage}";
// Log the message asynchronously with the appropriate event args
var eventArgs = new LogMessageReceivedEventArgs(
sequence,
messageType,
date,
sourceName,
loggerMessage,
extendedData,
callerMemberName,
callerFilePath,
callerLineNumber);
#endregion
#region Fire Up External Logging Logic (Asynchronously)
if (OnLogMessageReceived != null)
{
Task.Factory.StartNew(() =>
{
try
{
OnLogMessageReceived?.Invoke(sourceName, eventArgs);
}
catch
{
// Ignore
}
});
}
#endregion
#region Display the Message by Writing to the Output Queue
// Check if we are skipping these messages to be displayed based on settings
if (Settings.DisplayLoggingMessageType.HasFlag(messageType) == false)
{
return;
}
// Select the writer based on the message type
var writer = IsConsolePresent ?
messageType.HasFlag(LogMessageType.Error) ?
TerminalWriters.StandardError : TerminalWriters.StandardOutput
: TerminalWriters.None;
// Set the writer to Diagnostics if appropriate (Error and Debugging data go to the Diagnostics debugger
// if it is attached at all
if (IsDebuggerAttached &&
(IsConsolePresent == false || messageType.HasFlag(LogMessageType.Debug) || messageType.HasFlag(LogMessageType.Error)))
{
writer = writer | TerminalWriters.Diagnostics;
}
// Check if we really need to write this out
if (writer == TerminalWriters.None)
{
return;
}
// Further format the output in the case there is an exception being logged
if (writer.HasFlag(TerminalWriters.StandardError) && eventArgs.Exception != null)
{
try
{
outputMessage =
$"{outputMessage}{Environment.NewLine}{eventArgs.Exception.Stringify().Indent()}";
}
catch
{
// Ignore
}
}
// Filter output messages via events
var displayingEventArgs = new LogMessageDisplayingEventArgs(eventArgs);
OnLogMessageDisplaying?.Invoke(sourceName, displayingEventArgs);
if (displayingEventArgs.CancelOutput == false)
{
outputMessage.WriteLine(color, writer);
}
#endregion
}
}