public void OnError_CallsErrorCallback()
{
Exception lastError = null;
var onErrorCalled = new ManualResetEventSlim();
void OnError(Exception ex)
{
lastError = ex;
onErrorCalled.Set();
}
var pusher = new MetricPusher(new MetricPusherOptions
{
Job = "Test",
// Small interval to ensure that we exit fast.
IntervalMilliseconds = 100,
// Nothing listening there, should throw error right away.
Endpoint = "https://127.0.0.1:1",
OnError = OnError
});
pusher.Start();
var onErrorWasCalled = onErrorCalled.Wait(TimeSpan.FromSeconds(5));
Assert.IsTrue(onErrorWasCalled, "OnError was not called even though at least one failed push should have happened already.");
Assert.IsNotNull(lastError);
pusher.Stop();
}
private void RunHttpClientExceptionScenario(Exception throwOnHttpPost)
{
Exception lastError = null;
var onErrorCalled = new ManualResetEventSlim();
void OnError(Exception ex)
{
lastError = ex;
onErrorCalled.Set();
}
var pusher = new MetricPusher(new MetricPusherOptions
{
Job = "Test",
// Small interval to ensure that we exit fast.
IntervalMilliseconds = 100,
Endpoint = "https://any_valid.url/the_push_fails_with_fake_httpclient_throwing_exceptions",
OnError = OnError,
HttpClientProvider = () => new ThrowingHttpClient(throwOnHttpPost)
});
pusher.Start();
var onErrorWasCalled = onErrorCalled.Wait(TimeSpan.FromSeconds(5));
Assert.IsTrue(onErrorWasCalled, "OnError was not called even though the push failed.");
Assert.IsNotNull(lastError);
pusher.Stop();
}
//stopping server
public void StopServer()
{
if (ServerMetricsIsON)
{
mSrv.Stop();
}
if (PushGatewayIsON)
{
pusher.Stop();
}
}
public async Task PushTest()
{
var registry = Metrics.NewCustomRegistry();
var factory = Metrics.WithCustomRegistry(registry);
var pusher = new MetricPusher(new MetricPusherOptions
{
Endpoint = "http://127.0.0.1:9091/metrics",
Registry = registry,
IntervalMilliseconds = 30,
Job = "job"
});
pusher.Start();
var counters = new List <Counter>();
for (int i = 0; i < 1000; i++)
{
var counter = factory.CreateCounter($"Counter{i}", String.Empty);
counters.Add(counter);
}
var ct = new CancellationTokenSource();
var incTask = Task.Run(async() =>
{
while (!ct.IsCancellationRequested)
{
foreach (var counter in counters)
{
counter.Inc();
}
await Task.Delay(30);
}
});
await Task.Delay(5000);
ct.Cancel();
await incTask;
pusher.Stop();
}
private void OnShutdown()
{
_metricPusher?.Stop();
}