public async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
ILogger log)
{
log.LogInformation($"AppInsightsAzureFunctionDemo Start: {DateTime.Now}");
var timer = System.Diagnostics.Stopwatch.StartNew();
// Add custom data to the event
// customEvents | where timestamp > ago(7d) | order by timestamp desc
// https://microsoft.github.io/AzureTipsAndTricks/blog/tip195.html
var dictionary = new Dictionary <string, string>();
dictionary.Add("Function", "My AppInsightsAzureFunctionDemo");
dictionary.Add("Caller", "Toni Pohl");
dictionary.Add("Description", "This is the Azure function using App Insights description");
_provider.TrackEvent($"Event: Start {DateTime.Now}", dictionary);
// track a numeric value
// customMetrics | order by timestamp desc
_provider.TrackMetric("Metric: Ticks based on current time", DateTime.Now.Ticks);
// track an exception
// exceptions | order by timestamp desc
_provider.TrackException(new Exception($"Exception: at {DateTime.Now}"));
// track long running external service call
// dependencies | order by timestamp desc
_provider.TrackDependency("myDependency", "MyType", "myCall 1", DateTime.Now, timer.Elapsed, true);
// Done
_provider.TrackEvent($"Event: End {DateTime.Now}");
string responseMessage = $"AppInsightsAzureFunctionDemo End: {DateTime.Now}";
log.LogInformation(responseMessage);
return(new OkObjectResult(responseMessage));
}