public void Apply(int waitingLogEntries, Action <int> nonDiscardActionWithTimeout, Action discardAction)
{
if (Strategy == ThrottlingStrategy.None || waitingLogEntries < Limit)
{
nonDiscardActionWithTimeout(Timeout.Infinite);
return;
}
if (Strategy == ThrottlingStrategy.Discard)
{
InternalLogger.Warn("[Syslog] Applied discard throttling strategy");
discardAction();
return;
}
ApplyDeferment(waitingLogEntries);
nonDiscardActionWithTimeout(CalculateTimeout(waitingLogEntries));
}
private void TidyUp()
{
try
{
if (isReady)
{
Terminate();
}
}
catch (Exception exception)
{
InternalLogger.Warn(exception, "[Syslog] Terminate failed");
}
finally
{
isReady = false;
}
}
/// <summary>
/// Evaluates the expression.
/// </summary>
/// <param name="context">Evaluation context.</param>
/// <returns>Expression result.</returns>
public object Evaluate(LogEventInfo context)
{
try
{
return(this.EvaluateNode(context));
}
catch (Exception exception)
{
InternalLogger.Warn(exception, "Exception occurred when evaluating condition");
if (exception.MustBeRethrownImmediately())
{
throw;
}
throw new ConditionEvaluationException("Exception occurred when evaluating condition", exception);
}
}
protected override void CloseTarget()
{
InternalLogger.Warn("Closing {0} target", nameof(AzureBlobStorageLogTarget));
var result = _log.ShutdownAsync().GetAwaiter().GetResult();
if (!result.Succeeded)
{
InternalLogger.Error(
result.Exception,
"Failed to shutdown {0} target appropriately. Error: {1}",
nameof(AzureBlobStorageLogTarget),
result.Diagnostics ?? result.ErrorMessage ?? string.Empty);
}
else
{
InternalLogger.Info("Closed {0} target successfully", nameof(AzureBlobStorageLogTarget));
}
}
protected override void Write(IList <AsyncLogEventInfo> logEvents)
{
if (!AuthTokenResolved())
{
InternalLogger.Warn("auth token not resolved. skipping log entry.");
return;
}
InternalLogger.Debug($"Sending {logEvents.Count} entries to endpoint: {Endpoint}");
using (var ms = new MemoryStream())
{
using (var gzip = new GZipStream(ms, CompressionMode.Compress, true))
{
using (var sw = new StreamWriter(gzip, _encoding, 1024, true))
{
using (var jw = new JsonTextWriter(sw))
{
var ser = JsonSerializer.Create(_logEntrySerializerSettings);
foreach (var asyncLogEvent in logEvents)
{
try
{
SerializeLogEntry(jw, ser, asyncLogEvent.LogEvent);
asyncLogEvent.Continuation(null);
}
catch (Exception ex)
{
InternalLogger.Error(ex, "Error writing Splunk log event");
asyncLogEvent.Continuation(ex);
}
}
}
}
}
ms.Position = 0;
SendToEventCollector(ms);
}
}
public void WriteToStringWriterWithArgsTests()
{
// Expected result is the same for both types of method invocation.
const string expected = "Warn WWW 0\nError EEE 0, 1\nFatal FFF 0, 1, 2\nTrace TTT 0, 1, 2\nDebug DDD 0, 1\nInfo III 0\n";
InternalLogger.LogLevel = LogLevel.Trace;
InternalLogger.IncludeTimestamp = false;
{
StringWriter writer1 = new StringWriter()
{
NewLine = "\n"
};
InternalLogger.LogWriter = writer1;
// Named (based on LogLevel) public methods.
InternalLogger.Warn("WWW {0}", 0);
InternalLogger.Error("EEE {0}, {1}", 0, 1);
InternalLogger.Fatal("FFF {0}, {1}, {2}", 0, 1, 2);
InternalLogger.Trace("TTT {0}, {1}, {2}", 0, 1, 2);
InternalLogger.Debug("DDD {0}, {1}", 0, 1);
InternalLogger.Info("III {0}", 0);
TestWriter(expected, writer1);
}
{
//
// Reconfigure the LogWriter.
StringWriter writer2 = new StringWriter()
{
NewLine = "\n"
};
InternalLogger.LogWriter = writer2;
// Invoke Log(LogLevel, string) for every log level.
InternalLogger.Log(LogLevel.Warn, "WWW {0}", 0);
InternalLogger.Log(LogLevel.Error, "EEE {0}, {1}", 0, 1);
InternalLogger.Log(LogLevel.Fatal, "FFF {0}, {1}, {2}", 0, 1, 2);
InternalLogger.Log(LogLevel.Trace, "TTT {0}, {1}, {2}", 0, 1, 2);
InternalLogger.Log(LogLevel.Debug, "DDD {0}, {1}", 0, 1);
InternalLogger.Log(LogLevel.Info, "III {0}", 0);
TestWriter(expected, writer2);
}
}
/// <summary>
/// Create the mailmessage with the addresses, properties and body.
/// </summary>
private MailMessage CreateMailMessage(LogEventInfo lastEvent, string body)
{
var msg = new MailMessage();
var renderedFrom = this.From == null ? null : this.From.Render(lastEvent);
if (string.IsNullOrEmpty(renderedFrom))
{
throw new NLogRuntimeException(RequiredPropertyIsEmptyFormat, "From");
}
msg.From = new MailAddress(renderedFrom);
var addedTo = AddAddresses(msg.To, this.To, lastEvent);
var addedCc = AddAddresses(msg.CC, this.CC, lastEvent);
var addedBcc = AddAddresses(msg.Bcc, this.Bcc, lastEvent);
if (!addedTo && !addedCc && !addedBcc)
{
throw new NLogRuntimeException(RequiredPropertyIsEmptyFormat, "To/Cc/Bcc");
}
msg.Subject = this.Subject == null ? string.Empty : this.Subject.Render(lastEvent).Trim();
msg.BodyEncoding = this.Encoding;
msg.IsBodyHtml = this.Html;
if (this.Priority != null)
{
var renderedPriority = this.Priority.Render(lastEvent);
try
{
msg.Priority = (MailPriority)Enum.Parse(typeof(MailPriority), renderedPriority, true);
}
catch
{
InternalLogger.Warn("Could not convert '{0}' to MailPriority, valid values are Low, Normal and High. Using normal priority as fallback.");
msg.Priority = MailPriority.Normal;
}
}
msg.Body = body;
if (msg.IsBodyHtml && ReplaceNewlineWithBrTagInHtml && msg.Body != null)
{
msg.Body = msg.Body.Replace(EnvironmentHelper.NewLine, "<br/>");
}
return(msg);
}
protected override void Write(AsyncLogEventInfo logEvent)
{
GetConnection();
InternalLogger.Trace("Fluentd (Name={0}): Sending to address: '{1}:{2}'", Name, this.Host, this.Port);
var record = new Dictionary <string, string>();
var logMessage = GetFormattedMessage(logEvent.LogEvent);
record.Add("message", logMessage);
try
{
this.emitter.Pack(logEvent.LogEvent.TimeStamp, this.Tag, record);
}
catch (Exception ex)
{
InternalLogger.Warn("Fluentd Emit - " + ex.ToString());
throw; // Notify NLog of failure
}
}
private Task ProcessQueueAsync(MessageBuilder messageBuilder, TaskCompletionSource <object> tcs)
{
if (token.IsCancellationRequested)
{
tcs.SetCanceled();
return(tcs.Task);
}
try
{
var asyncLogEventInfo = queue.Take(token);
var logEventMsgSet = new LogEventMsgSet(asyncLogEventInfo, buffer, messageBuilder, messageTransmitter);
logEventMsgSet
.Build(layout)
.SendAsync(token)
.ContinueWith(t =>
{
var exception = t.Exception;
if (token.IsCancellationRequested || t.IsCanceled)
{
InternalLogger.Debug("[Syslog] Task canceled");
tcs.SetCanceled();
return;
}
if (exception != null) // t.IsFaulted is true
{
InternalLogger.Warn(exception.GetBaseException(), "[Syslog] Task faulted");
}
else
{
InternalLogger.Debug("[Syslog] Successfully handled message '{0}'", logEventMsgSet);
}
ProcessQueueAsync(messageBuilder, tcs);
}, CancellationToken.None, TaskContinuationOptions.ExecuteSynchronously, TaskScheduler.Current);
return(tcs.Task);
}
catch (Exception exception)
{
tcs.SetException(exception);
return(tcs.Task);
}
}
/// <summary>
/// Writes the specified log event to the wrapped target, retrying and pausing in case of an error.
/// </summary>
/// <param name="logEvent">The log event.</param>
protected override void Write(AsyncLogEventInfo logEvent)
{
AsyncContinuation continuation = null;
int counter = 0;
continuation = ex =>
{
if (ex == null)
{
logEvent.Continuation(null);
return;
}
int retryNumber = Interlocked.Increment(ref counter);
InternalLogger.Warn("Error while writing to '{0}': {1}. Try {2}/{3}", WrappedTarget, ex, retryNumber, RetryCount);
// exceeded retry count
if (retryNumber >= RetryCount)
{
InternalLogger.Warn("Too many retries. Aborting.");
logEvent.Continuation(ex);
return;
}
// sleep and try again (Check every 100 ms if target have been closed)
for (int i = 0; i < RetryDelayMilliseconds;)
{
int retryDelay = Math.Min(100, RetryDelayMilliseconds - i);
Thread.Sleep(retryDelay);
i += retryDelay;
if (!IsInitialized)
{
InternalLogger.Warn("Target closed. Aborting.");
logEvent.Continuation(ex);
return;
}
}
WrappedTarget.WriteAsyncLogEvent(logEvent.LogEvent.WithContinuation(continuation));
};
WrappedTarget.WriteAsyncLogEvent(logEvent.LogEvent.WithContinuation(continuation));
}
private bool TryLoadLoggingConfiguration(LogFactory logFactory, string configFile, out LoggingConfiguration config)
{
try
{
#if SILVERLIGHT && !WINDOWS_PHONE
Uri configFileUri = new Uri(configFile, UriKind.Relative);
if (Application.GetResourceStream(configFileUri) != null)
{
config = LoadXmlLoggingConfiguration(logFactory, configFile);
return(true); // File exists, and maybe the config is valid, stop search
}
#else
if (File.Exists(configFile))
{
config = LoadXmlLoggingConfiguration(logFactory, configFile);
return(true); // File exists, and maybe the config is valid, stop search
}
#endif
}
catch (IOException ex)
{
InternalLogger.Warn(ex, "Skipping invalid config file location: {0}", configFile);
}
catch (UnauthorizedAccessException ex)
{
InternalLogger.Warn(ex, "Skipping inaccessible config file location: {0}", configFile);
}
catch (SecurityException ex)
{
InternalLogger.Warn(ex, "Skipping inaccessible config file location: {0}", configFile);
}
catch (Exception ex)
{
InternalLogger.Error(ex, "Failed loading from config file location: {0}", configFile);
if (ex.MustBeRethrown())
{
throw;
}
}
config = null;
return(false); // No valid file found
}
/// <summary>
/// Executes the received command by first parsing it then executing with the parsed values.
/// </summary>
/// <param name="command">The command<see cref="string"/></param>
/// <returns>The <see cref="bool"/></returns>
private static async Task <bool> ExecuteCommandAsync(string?command)
{
if (!InitCompleted)
{
Logger.Warn("Shell isn't initiated properly.");
ShellIO.Error("Shell is offline!");
return(false);
}
if (string.IsNullOrEmpty(command))
{
Logger.Trace("Command is null.");
ShellIO.Error("Command empty or invalid.");
return(false);
}
CurrentCommand = command;
return(await ParseCommandAsync(command).ConfigureAwait(false));
}
/// <summary>
/// Prefills command handlers. We cannot do it in runtime because there can be race conditions
/// during initialization. Much simple just do that once on application start.
/// </summary>
protected override void Initialize()
{
// Precache all non-generic types with command handlers.
commandHandlers = Assemblies.SelectMany(a => a.GetTypes())
.Where(t =>
HandlerSearchMethod == HandlerSearchMethod.ClassAttribute ?
t.GetTypeInfo().GetCustomAttribute <CommandHandlersAttribute>() != null :
t.Name.EndsWith("Handlers"))
.SelectMany(t => t.GetTypeInfo().GetMethods())
.Where(m => m.GetParameters().Length > 0)
.Where(m => m.Name.StartsWith(HandlerPrefix))
.ToArray();
if (!commandHandlers.Any())
{
var assembliesStr = string.Join(",", Assemblies.Select(a => a.FullName));
InternalLogger.Warn(string.Format(Properties.Strings.NoHandlersInAssembly, assembliesStr),
nameof(CommandHandlerLocatorMiddleware));
}
}
/// <summary>
/// Handles that scheduled task has completed (succesfully or failed), and starts the next pending task
/// </summary>
/// <param name="completedTask">Task just completed</param>
/// <param name="continuation">AsyncContinuation to notify of success or failure</param>
private void TaskCompletion(Task completedTask, object continuation)
{
try
{
if (ReferenceEquals(completedTask, _previousTask))
{
if (TaskTimeoutSeconds > 0)
{
_taskTimeoutTimer.Change(Timeout.Infinite, Timeout.Infinite);
}
}
else
{
if (!IsInitialized)
{
return;
}
}
if (completedTask.IsCanceled)
{
if (completedTask.Exception != null)
{
InternalLogger.Warn(completedTask.Exception, "{0} WriteAsyncTask was cancelled", this.Name);
}
else
{
InternalLogger.Info("{0} WriteAsyncTask was cancelled", this.Name);
}
}
else if (completedTask.Exception != null)
{
InternalLogger.Warn(completedTask.Exception, "{0} WriteAsyncTask failed on completion", this.Name);
}
var asyncContinuation = (AsyncContinuation)continuation;
asyncContinuation(completedTask.Exception);
}
finally
{
TaskStartNext(completedTask);
}
}
private Task ProcessQueueAsync(MessageBuilder messageBuilder, TaskCompletionSource <object> tcs)
{
if (token.IsCancellationRequested)
{
return(tcs.CanceledTask());
}
try
{
var asyncLogEventInfo = queue.Take(token);
SignalFlushCompletionWhenIsMarker(asyncLogEventInfo);
var logEventMsgSet = new LogEventMsgSet(asyncLogEventInfo, buffer, messageBuilder, messageTransmitter);
logEventMsgSet
.Build(layout)
.SendAsync(token)
.ContinueWith(t =>
{
if (t.IsCanceled)
{
InternalLogger.Debug("Task canceled");
tcs.SetCanceled();
return;
}
if (t.Exception != null) // t.IsFaulted is true
{
InternalLogger.Warn(t.Exception.GetBaseException(), "Task faulted");
}
else
{
InternalLogger.Debug("Successfully sent message '{0}'", logEventMsgSet);
}
ProcessQueueAsync(messageBuilder, tcs);
}, token, TaskContinuationOptions.ExecuteSynchronously, TaskScheduler.Current);
return(tcs.Task);
}
catch (Exception exception)
{
return(tcs.FailedTask(exception));
}
}
private void SetupMailMessage(MailMessage msg, LogEventInfo logEvent)
{
msg.From = new MailAddress(this.From.Render(logEvent));
foreach (string mail in this.To.Render(logEvent).Split(';'))
{
msg.To.Add(mail);
}
if (this.Bcc != null)
{
foreach (string mail in this.Bcc.Render(logEvent).Split(';'))
{
msg.Bcc.Add(mail);
}
}
if (this.CC != null)
{
foreach (string mail in this.CC.Render(logEvent).Split(';'))
{
msg.CC.Add(mail);
}
}
msg.Subject = this.Subject.Render(logEvent).Trim();
msg.BodyEncoding = this.Encoding;
msg.IsBodyHtml = this.Html;
if (this.Priority != null)
{
var renderedPriority = this.Priority.Render(logEvent);
try
{
msg.Priority = (MailPriority)Enum.Parse(typeof(MailPriority), renderedPriority, true);
}
catch
{
InternalLogger.Warn("Could not convert '{0}' to MailPriority, valid values are Low, Normal and High. Using normal priority as fallback.");
msg.Priority = MailPriority.Normal;
}
}
}
/// <summary>
/// Split the string and then compile into list of Rendering formats.
/// </summary>
/// <param name="formatSpecifier"></param>
/// <returns></returns>
private static List <ExceptionRenderingFormat> CompileFormat(string formatSpecifier)
{
List <ExceptionRenderingFormat> formats = new List <ExceptionRenderingFormat>();
string[] parts = formatSpecifier.Replace(" ", string.Empty).Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
foreach (string s in parts)
{
ExceptionRenderingFormat renderingFormat;
if (_formatsMapping.TryGetValue(s, out renderingFormat))
{
formats.Add(renderingFormat);
}
else
{
InternalLogger.Warn("Unknown exception data target: {0}", s);
}
}
return(formats);
}
/// <summary>
/// Renders the inner message, processes it and appends it to the specified <see cref="StringBuilder" />.
/// </summary>
/// <param name="builder">The <see cref="StringBuilder"/> to append the rendered data to.</param>
/// <param name="logEvent">Logging event.</param>
protected override void Append(StringBuilder builder, LogEventInfo logEvent)
{
if (Inner == null)
{
InternalLogger.Warn("{0} has no configured Inner-Layout, so skipping", this);
return;
}
int orgLength = builder.Length;
try
{
RenderInnerAndTransform(logEvent, builder, orgLength);
}
catch
{
builder.Length = orgLength; // Rewind/Truncate on exception
throw;
}
}
/// <summary>
/// Register NLog.Web.AspNetCore, so so <extension> in NLog's config isn't needed.
/// </summary>
internal static void RegisterNLogWebAspNetCore()
{
try
{
InternalLogger.Debug("Registering NLog.Web.AspNetCore");
ConfigurationItemFactory.Default.RegisterItemsFromAssembly(typeof(AspNetExtensions).GetTypeInfo().Assembly);
}
catch (Exception ex)
{
InternalLogger.Error(ex, "Registering NLog.Web.AspNetCore failed");
}
try
{
LogManager.AddHiddenAssembly(typeof(NLogBuilder).GetTypeInfo().Assembly);
}
catch (Exception ex)
{
InternalLogger.Warn(ex, "Hidding assembly of {0} failed", nameof(NLogBuilder));
}
}
void ShadePropertyChanged(object sender, PropertyChangedEventArgs e)
{
var shade = (Shade)sender;
var index = _shadesSource.IndexOf(shade);
if (index < 0)
{
InternalLogger.Warn(LogTag, $"ShadePropertyChanged => shade property {e.PropertyName} changed but we can't find the shade in the source");
return;
}
InternalLogger.Debug(LogTag, () => $"ShadePropertyChanged( shadeIndex: {index}, propertyName: {e.PropertyName} )");
switch (e.PropertyName)
{
case nameof(Shade.BlurRadius):
case nameof(Shade.Color):
case nameof(Shade.Offset):
UpdateGeometry();
break;
}
}
private static JsonSerializerSettings CreateJsonSerializerSettings()
{
var jsonSerializerSettings = new JsonSerializerSettings {
ReferenceLoopHandling = ReferenceLoopHandling.Ignore
};
jsonSerializerSettings.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
jsonSerializerSettings.Converters.Add(new JsonToStringConverter(typeof(System.Reflection.MemberInfo)));
jsonSerializerSettings.Converters.Add(new JsonToStringConverter(typeof(System.Reflection.Assembly)));
jsonSerializerSettings.Converters.Add(new JsonToStringConverter(typeof(System.Reflection.Module)));
jsonSerializerSettings.Error = (sender, args) =>
{
InternalLogger.Warn(args.ErrorContext.Error, "GelfConverter: Error serializing property '{0}', property ignored", args.ErrorContext.Member);
if (!LogManager.ThrowExceptions)
{
args.ErrorContext.Handled = true;
}
};
return(jsonSerializerSettings);
}
private void TryAddGitRevisionId(Protobuf.Collections.MapField <string, string> labels)
{
try
{
var gitId = DevTools.Source.V1.SourceContext.AppSourceContext?.Git?.RevisionId;
if (!String.IsNullOrWhiteSpace(gitId))
{
labels.Add(DevTools.Source.V1.SourceContext.GitRevisionIdLogLabel, gitId);
}
}
catch (Exception ex) when(
ex is SecurityException ||
ex is InvalidProtocolBufferException ||
ex is InvalidJsonException ||
ex is UnauthorizedAccessException)
{
// This is best-effort only, exceptions from reading/parsing the source_context.json are ignored.
InternalLogger.Warn(ex, "GoogleStackdriver(Name={0}): Exception at TryAddGitRevisionId", Name);
}
}
private Mutex CreateArchiveMutex()
{
try
{
return CreateSharableMutex("FileArchiveLock");
}
catch (Exception ex)
{
if (ex is SecurityException || ex is UnauthorizedAccessException || ex is NotSupportedException || ex is NotImplementedException || ex is PlatformNotSupportedException)
{
InternalLogger.Warn(ex, "Failed to create global archive mutex: {0}", FileName);
return new Mutex();
}
InternalLogger.Error(ex, "Failed to create global archive mutex: {0}", FileName);
if (ex.MustBeRethrown())
throw;
return new Mutex();
}
}
private void FindControlAndSendTheMessage(string logMessage)
{
Form form = null;
if (Form.ActiveForm != null)
{
form = Form.ActiveForm;
}
if (Application.OpenForms[FormName] != null)
{
form = Application.OpenForms[FormName];
}
if (form == null)
{
InternalLogger.Info("Form {0} not found", FormName);
return;
}
Control control = FormHelper.FindControl(ControlName, form);
if (control == null)
{
InternalLogger.Info("Control {0} on Form {1} not found", ControlName, FormName);
return;
}
try
{
control.BeginInvoke(new DelSendTheMessageToFormControl(SendTheMessageToFormControl), control, logMessage);
}
catch (Exception ex)
{
InternalLogger.Warn(ex.ToString());
if (LogManager.ThrowExceptions)
{
throw;
}
}
}
private static ExceptionDataTarget[] CompileFormat(string formatSpecifier)
{
string[] parts = formatSpecifier.Replace(" ", string.Empty).Split(',');
var dataTargets = new List <ExceptionDataTarget>();
foreach (string s in parts)
{
switch (s.ToUpper(CultureInfo.InvariantCulture))
{
case "MESSAGE":
dataTargets.Add(AppendMessage);
break;
case "TYPE":
dataTargets.Add(AppendType);
break;
case "SHORTTYPE":
dataTargets.Add(AppendShortType);
break;
case "TOSTRING":
dataTargets.Add(AppendToString);
break;
case "METHOD":
dataTargets.Add(AppendMethod);
break;
case "STACKTRACE":
dataTargets.Add(AppendStackTrace);
break;
default:
InternalLogger.Warn("Unknown exception data target: {0}", s);
break;
}
}
return(dataTargets.ToArray());
}
private void CompileFormat(string format)
{
string[] parts = format.Replace(" ", "").Split(',');
ArrayList dataTargets = new ArrayList();
foreach (string s in parts)
{
switch (s.ToLower())
{
case "message":
dataTargets.Add(new ExceptionDataTarget(AppendMessage));
break;
case "type":
dataTargets.Add(new ExceptionDataTarget(AppendType));
break;
case "shorttype":
dataTargets.Add(new ExceptionDataTarget(AppendShortType));
break;
case "tostring":
dataTargets.Add(new ExceptionDataTarget(AppendToString));
break;
#if !NETCF
case "stacktrace":
dataTargets.Add(new ExceptionDataTarget(AppendStackTrace));
break;
case "method":
dataTargets.Add(new ExceptionDataTarget(AppendMethod));
break;
#endif
default:
InternalLogger.Warn("Unknown exception data target: {0}", s);
break;
}
}
_exceptionDataTargets = (ExceptionDataTarget[])dataTargets.ToArray(typeof(ExceptionDataTarget));
}
/// <summary>
/// Closes this instance.
/// </summary>
public override void Close()
{
InternalLogger.Trace("Closing '{0}'", FileName);
try
{
if (fileStream != null)
{
fileStream.Dispose();
}
}
catch (Exception ex)
{
InternalLogger.Warn(ex, "Failed to close file '{0}'", FileName);
System.Threading.Thread.Sleep(1); // Artificial delay to avoid hammering a bad file location
}
finally
{
fileStream = null;
}
FileTouched();
}
internal ILokiTransport GetLokiTransport(Layout endpoint)
{
var endpointUri = RenderLogEvent(endpoint, LogEventInfo.CreateNullEvent());
if (Uri.TryCreate(endpointUri, UriKind.Absolute, out var uri))
{
if (uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps)
{
var lokiHttpClient = LokiHttpClientFactory(uri);
var httpLokiTransport = new HttpLokiTransport(uri, lokiHttpClient);
return(httpLokiTransport);
}
}
InternalLogger.Warn("Unable to create a valid Loki Endpoint URI from '{0}'", endpoint);
var nullLokiTransport = new NullLokiTransport();
return(nullLokiTransport);
}
/// <summary>
/// Write to output
/// </summary>
/// <param name="textLine">text to be written.</param>
private void WriteToOutput(string textLine)
{
if (_pauseLogging)
{
return;
}
var output = GetOutput();
try
{
output.WriteLine(textLine);
}
catch (IndexOutOfRangeException ex)
{
//this is a bug and therefor stopping logging. For docs, see PauseLogging property
_pauseLogging = true;
InternalLogger.Warn(ex, "An IndexOutOfRangeException has been thrown and this is probably due to a race condition." +
"Logging to the console will be paused. Enable by reloading the config or re-initialize the targets");
}
}
/// <summary>
/// Creates the file stream.
/// </summary>
/// <param name="allowFileSharedWriting">If set to <c>true</c> sets the file stream to allow shared writing.</param>
/// <returns>A <see cref="FileStream"/> object which can be used to write to the file.</returns>
protected FileStream CreateFileStream(bool allowFileSharedWriting)
{
int currentDelay = this.CreateFileParameters.ConcurrentWriteAttemptDelay;
InternalLogger.Trace("Opening {0} with allowFileSharedWriting={1}", this.FileName, allowFileSharedWriting);
for (int i = 0; i < this.CreateFileParameters.ConcurrentWriteAttempts; ++i)
{
try
{
try
{
return(this.TryCreateFileStream(allowFileSharedWriting));
}
catch (DirectoryNotFoundException)
{
if (!this.CreateFileParameters.CreateDirs)
{
throw;
}
Directory.CreateDirectory(Path.GetDirectoryName(this.FileName));
return(this.TryCreateFileStream(allowFileSharedWriting));
}
}
catch (IOException)
{
if (!this.CreateFileParameters.ConcurrentWrites || i + 1 == this.CreateFileParameters.ConcurrentWriteAttempts)
{
throw; // rethrow
}
int actualDelay = this.random.Next(currentDelay);
InternalLogger.Warn("Attempt #{0} to open {1} failed. Sleeping for {2}ms", i, this.FileName, actualDelay);
currentDelay *= 2;
System.Threading.Thread.Sleep(actualDelay);
}
}
throw new InvalidOperationException("Should not be reached.");
}
