static bool ReportHeartbeatsFound(SenderChannel telemetryChannel)
{
bool foundAHeartbeat = false;
IEnumerable <ITelemetry> metricsTelemetry = telemetryChannel.GetTelemetryTypeSent("MetricTelemetry");
if (metricsTelemetry != null)
{
foreach (ITelemetry ti in metricsTelemetry)
{
if (ti is MetricTelemetry metric)
{
metric.Name.Equals("HeartbeatState", StringComparison.OrdinalIgnoreCase);
Console.WriteLine($"Heartbeat sent at {metric.Timestamp.ToString("h:mm:ss")}");
Console.WriteLine($" Properties:");
foreach (var kvp in metric.Properties)
{
Console.WriteLine($" {kvp.Key}: '{kvp.Value}'");
}
foundAHeartbeat = true;
}
}
}
return(foundAHeartbeat);
}
static void Main(string[] args)
{
Console.WriteLine("Heartbeat extender. Press Esc to stop.");
var appInsightsConfig = TelemetryConfiguration.Active;
var testingChannel = new SenderChannel();
appInsightsConfig.TelemetryChannel = testingChannel;
var tc = new TelemetryClient(appInsightsConfig);
var extender = new CustomHeartbeatProperties();
// wait for the user to hit the Esc key
int foundHeartbeats = 0;
if (extender.Initialize(TimeSpan.FromSeconds(31.0)))
{
while (!(Console.KeyAvailable && Console.ReadKey(true).Key == ConsoleKey.Escape))
{
Thread.Sleep(100);
if (ReportHeartbeatsFound(testingChannel))
{
Console.WriteLine("Found {0} heartbeats.", foundHeartbeats + 1);
if (foundHeartbeats == 0)
{
Console.WriteLine("Adding a custom property.");
extender.AddCustomHeartbeatProperty();
}
else if (foundHeartbeats == 1)
{
Console.WriteLine("Updating the custom property we added previously.");
extender.UpdateCustomHeartbeatProperty();
}
foundHeartbeats++;
}
}
Console.WriteLine("You pressed Esc. See ya!");
}
else
{
Console.WriteLine("Could not initialize. Please step through with a debugger to see what may have caused the problem.");
}
}