/// <summary>
/// Logs any exceptions from the task to the given log source.
/// </summary>
public static Task LogExceptions(this Task task, LogSource toLog)
{
return(task.ContinueWith(t =>
{
if (t.Exception != null)
{
toLog.Error(t.Exception.ToString());
}
}));
}
/// <summary>
/// Logs any exceptions from the task to the given log source.
/// </summary>
public static Task <T> LogExceptions <T>(this Task <T> task, LogSource toLog)
{
return(task.ContinueWith(t =>
{
if (t.Exception != null)
{
toLog.Error(t.Exception.ToString());
}
return t.Result;
}));
}
/// <summary>
/// Logs an error report with the logging system.
/// </summary>
/// <param name="exception">An exception that describes error that occurred.</param>
/// <param name="additionalData">Any additional data you wish to attach to the report.</param>
/// <param name="log">The log to write the output to. A suitable default will be selected if null.</param>
public static void Log(Exception exception, object additionalData = null, LogSource log = null)
{
Helpers.Argument.ValidateIsNotNull(exception, nameof(exception));
log = log ?? Toolkit.Log.Default.CreateChildSource(nameof(ErrorReport));
try
{
var details = new StringBuilder();
// First a "subject line" suitable for summarizing and email headering purposes.
// We take the last (deepest) exception from the stack, as it is the root cause of the exception.
details.AppendLine(Summarize(exception));
details.AppendLine();
details.AppendFormat("Timestamp: {0}", DateTimeOffset.UtcNow.ToString("u"));
details.AppendLine();
details.AppendFormat("Machine name: {0}", Environment.MachineName);
details.AppendLine();
details.AppendFormat("Operating system: {0}", Environment.OSVersion);
details.AppendLine();
details.AppendFormat("Current user: {0}\\{1}", Environment.UserDomainName, Environment.UserName);
details.AppendLine();
details.AppendFormat("CLR version: {0}", Environment.Version);
details.AppendLine();
details.AppendLine();
details.AppendLine("Loaded non-system assemblies:");
var loadedAssemblyNames = AppDomain.CurrentDomain.GetAssemblies().Select(a => a.GetName());
// We filter out system assemblies because they are boring.
foreach (var assemblyName in loadedAssemblyNames
.Where(a => !a.Name.StartsWith("System."))
.OrderBy(a => a.Name))
{
details.AppendLine($"{assemblyName.Name} {assemblyName.Version}");
}
details.AppendLine();
details.AppendLine("Exception message stack:");
// We want the deepest exceptions first, as they are the most important.
var exceptionStack = FlattenException(exception).Reverse().ToList();
for (int i = 0; i < exceptionStack.Count; i++)
{
details.AppendLine($"{i + 1}. {exceptionStack[i]}");
}
details.AppendLine();
if (additionalData != null)
{
details.AppendLine();
details.AppendLine("Additional data:");
details.AppendLine(Helpers.Debug.ToDebugString(additionalData));
details.AppendLine();
}
log.Error(details.ToString());
}
catch (Exception ex)
{
log.Wtf("Exception occurred when attempting to create error report! " + ex);
}
}