private void HandleHostError(Microsoft.Azure.WebJobs.Extensions.TraceFilter traceFilter)
{
foreach (TraceEvent traceEvent in traceFilter.Events)
{
if (traceEvent.Exception is FunctionInvocationException)
{
// For all function invocation events, we notify the invoker so it can
// log the error as needed to its function specific logs.
FunctionInvocationException invocationException = traceEvent.Exception as FunctionInvocationException;
NotifyInvoker(invocationException.MethodName, invocationException);
}
else if (traceEvent.Exception is FunctionIndexingException)
{
// For all startup time indexing errors, we accumulate them per function
FunctionIndexingException indexingException = traceEvent.Exception as FunctionIndexingException;
string formattedError = Utility.FlattenException(indexingException);
AddFunctionError(indexingException.MethodName, formattedError);
// Also notify the invoker so the error can also be written to the function
// log file
NotifyInvoker(indexingException.MethodName, indexingException);
// Mark the error as handled so indexing will continue
indexingException.Handled = true;
}
}
}
private void HandleHostError(Microsoft.Azure.WebJobs.Extensions.TraceFilter traceFilter)
{
foreach (TraceEvent traceEvent in traceFilter.Events)
{
HandleHostError(traceEvent.Exception);
}
}
private void HandleHostError(Microsoft.Azure.WebJobs.Extensions.TraceFilter traceFilter)
{
// TODO: figure out why sometimes we get null events
var events = traceFilter.Events.Where(p => p != null).ToArray();
foreach (TraceEvent traceEvent in events)
{
var exception = traceEvent.Exception ?? new InvalidOperationException(traceEvent.Message);
HandleHostError(exception);
}
}
/// <summary>
/// Add the specified filter function to this <see cref="TraceMonitor"/>.
/// </summary>
/// <param name="predicate">The filter predicate.</param>
/// <param name="message">The optional subscription notification message to use.</param>
/// <returns>This <see cref="TraceMonitor"/> instance.</returns>
public TraceMonitor Filter(Func <TraceEvent, bool> predicate, string message = null)
{
if (predicate == null)
{
throw new ArgumentNullException("predicate");
}
Filters.Add(TraceFilter.Create(predicate, message));
return(this);
}
/// <summary>
/// Send an email notification using SendGrid.
/// </summary>
/// <param name="filter">The <see cref="TraceFilter"/> that triggered the notification.</param>
public void EmailNotify(TraceFilter filter)
{
SendGridMessage message = new SendGridMessage()
{
From = _sendGridConfig.FromAddress,
Subject = "WebJob Error Notification",
Text = filter.GetDetailedMessage(5)
};
message.AddTo(_sendGridConfig.ToAddress);
_sendGrid.DeliverAsync(message);
}
/// <summary>
/// Notify all subscribers that the specified filter has has triggered
/// a notification.
/// </summary>
protected virtual void Notify(TraceFilter filter)
{
// Throttle notifications if requested
bool shouldNotify = NotificationThrottle == null ||
(DateTime.Now - _lastNotification) > NotificationThrottle;
if (shouldNotify)
{
foreach (var subscription in Subscriptions)
{
subscription(filter);
}
_lastNotification = DateTime.Now;
}
}
/// <summary>
/// Send a WebHook request to an IFTTT WebHook event that can be configured
/// to send an SMS message, etc.
/// </summary>
/// <remarks>
/// Using IFTTT is free, and by sending a WebHook request on an event,
/// you can use any of the many other notification mechanisms they support
/// (email, SMS, etc.) See IFTTT Maker Channel documentation here: http://ifttt.com/maker.
/// </remarks>
/// <param name="filter">The <see cref="TraceFilter"/> that triggered the notification.</param>
public void WebNotify(TraceFilter filter)
{
if (string.IsNullOrEmpty(_webNotificationUri))
{
return;
}
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, _webNotificationUri);
// Send some event detail data along to the IFTTT recipe.
string json = string.Format("{{ \"value1\": \"{0}\" }}", filter.Message);
request.Content = new StringContent(json);
request.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
_httpClient.SendAsync(request).Wait();
}
