public PrometheusExporterHostedServiceTests()
{
_exporters = new Mock <IEnumerable <IExporter> >();
var configuration = new PrometheusExporterConfiguration()
{
Port = 9561,
};
_configurationOptions = new Mock <IOptions <PrometheusExporterConfiguration> >();
_configurationOptions.Setup(f => f.Value).Returns(configuration);
_logger = new Mock <ILogger <PrometheusExporterHostedService> >();
_prometheusExporterService = new PrometheusExporterHostedService(_exporters.Object, _configurationOptions.Object, _logger.Object);
}
public void Validate_Attributes_Should_Pass(PrometheusExporterConfiguration conf, bool expectedResult)
{
try
{
conf.Validate();
}
catch (Exception e)
{
if (expectedResult)
{
throw;
}
e.Should().BeOfType <AggregateException>();
}
}
public PrometheusExporterHostedService(
IEnumerable <IExporter> exporters,
IOptions <PrometheusExporterConfiguration> configuration,
ILogger <PrometheusExporterHostedService> logger)
{
_exporters = exporters;
_configuration = configuration.Value;
_logger = logger;
_metricServer = new MetricServer(_configuration.Port);
// Init metrics
TotalScrapeActivations = Metrics.CreateCounter(
"total_activations",
"Total activations of the exporter",
new CounterConfiguration()
{
SuppressInitialValue = true
});
TotalSuccessfulScrapeActivations = Metrics.CreateCounter(
"total_success_activations",
"Total successful activation of the exporter",
new CounterConfiguration()
{
SuppressInitialValue = true
});
IsSuccessful = Metrics.CreateGauge(
"is_successful_scrape",
"Indication to if the last scrape was successful",
new GaugeConfiguration()
{
SuppressInitialValue = true
});
ScrapeTime = Metrics.CreateSummary(
"scrape_time",
"Total scraping time of the exporter",
new SummaryConfiguration()
{
SuppressInitialValue = true,
Objectives = new[]
{
new QuantileEpsilonPair(0.5, 0.05),
new QuantileEpsilonPair(0.9, 0.05),
new QuantileEpsilonPair(0.95, 0.01),
new QuantileEpsilonPair(0.99, 0.01),
}
});
}
