public void MetricsWithAllStatesGetCreated()
{
HangfireJobStatistics hangfireJobStatistics = _autoFixture.Create <HangfireJobStatistics>();
PerformMetricsTest(hangfireJobStatistics);
_mockHangfireMonitor.Verify(x => x.GetJobStatistics(), Times.Once);
}
private void VerifyPrometheusMetrics(HangfireJobStatistics hangfireJobStatistics)
{
List <string> expectedStrings = CreateExpectedStrings(hangfireJobStatistics);
string actual = GetPrometheusContent();
foreach (string expected in expectedStrings)
{
Assert.Contains(expected, actual);
}
}
public void ShouldGetNumberOfJobs()
{
HangfireJobStatistics actual = _hangfireMonitorService.GetJobStatistics();
Assert.Equal(_expectedStats.Failed, actual.Failed);
Assert.Equal(_expectedStats.Enqueued, actual.Enqueued);
Assert.Equal(_expectedStats.Scheduled, actual.Scheduled);
Assert.Equal(_expectedStats.Processing, actual.Processing);
Assert.Equal(_expectedStats.Succeeded, actual.Succeeded);
Assert.Equal(_expectedRetrySet.Count, actual.Retry);
}
public void MetricsWithAllStatesGetUpdatedOnSubsequentCalls()
{
int count = 10;
for (int i = 0; i < count; i++)
{
HangfireJobStatistics hangfireJobStatistics = _autoFixture.Create <HangfireJobStatistics>();
PerformMetricsTest(hangfireJobStatistics);
}
_mockHangfireMonitor.Verify(x => x.GetJobStatistics(), Times.Exactly(10));
}
private List <string> CreateExpectedStrings(HangfireJobStatistics hangfireJobStatistics)
{
List <string> expectedStrings = new List <string>();
expectedStrings.Add($"# HELP {_metricName} {_metricHelp}\n# TYPE {_metricName} gauge");
expectedStrings.Add(GetMetricString(_failedLabelValue, hangfireJobStatistics.Failed));
expectedStrings.Add(GetMetricString(_enqueuedLabelValue, hangfireJobStatistics.Enqueued));
expectedStrings.Add(GetMetricString(_scheduledLabelValue, hangfireJobStatistics.Scheduled));
expectedStrings.Add(GetMetricString(_processingLabelValue, hangfireJobStatistics.Processing));
expectedStrings.Add(GetMetricString(_succeededLabelValue, hangfireJobStatistics.Succeeded));
expectedStrings.Add(GetMetricString(_retryLabelValue, hangfireJobStatistics.Retry));
return(expectedStrings);
}
public void ScrapeShoudFailOnExceptionWhenSettingEnabled()
{
HangfireJobStatistics hangfireJobStatistics = _autoFixture.Create <HangfireJobStatistics>();
PerformMetricsTest(hangfireJobStatistics);
_settings.FailScrapeOnException = true;
Exception exToThrow = new Exception();
_mockHangfireMonitor.Setup(x => x.GetJobStatistics()).Throws(exToThrow);
ScrapeFailedException ex = Assert.Throws <ScrapeFailedException>(() => _classUnderTest.ExportHangfireStatistics());
Assert.Same(exToThrow, ex.InnerException);
Assert.Equal("Scrape failed due to exception. See InnerException for details.", ex.Message);
}
public void MetricsShouldNotGetUpdatedOnExceptionWhenSettingDisabled()
{
_settings.FailScrapeOnException = false;
HangfireJobStatistics hangfireJobStatistics = _autoFixture.Create <HangfireJobStatistics>();
PerformMetricsTest(hangfireJobStatistics);
_mockHangfireMonitor.Setup(x => x.GetJobStatistics()).Throws(new Exception());
_classUnderTest.ExportHangfireStatistics();
VerifyPrometheusMetrics(hangfireJobStatistics);
hangfireJobStatistics = _autoFixture.Create <HangfireJobStatistics>();
PerformMetricsTest(hangfireJobStatistics);
_mockHangfireMonitor.Verify(x => x.GetJobStatistics(), Times.Exactly(3));
}
private void PerformMetricsTest(HangfireJobStatistics hangfireJobStatistics)
{
_mockHangfireMonitor.Setup(x => x.GetJobStatistics()).Returns(hangfireJobStatistics);
_classUnderTest.ExportHangfireStatistics();
VerifyPrometheusMetrics(hangfireJobStatistics);
}