public void ProviderWithException()
{
var mockPayloadSender = new MockPayloadSender();
var testLogger = new TestLogger(LogLevel.Information);
using (var mc = new MetricsCollector(testLogger, mockPayloadSender, new ConfigStore(new MockConfigSnapshot(disableMetrics: "*"), testLogger)))
{
mc.MetricsProviders.Clear();
var providerWithException = new MetricsProviderWithException();
mc.MetricsProviders.Add(providerWithException);
for (var i = 0; i < MetricsCollector.MaxTryWithoutSuccess; i++)
{
mc.CollectAllMetrics();
}
providerWithException.NumberOfGetValueCalls.Should().Be(MetricsCollector.MaxTryWithoutSuccess);
testLogger.Lines.Count(line => line.Contains(MetricsProviderWithException.ExceptionMessage))
.Should()
.Be(MetricsCollector.MaxTryWithoutSuccess);
testLogger.Lines.Select(l => l.Contains($"Failed reading {providerWithException.DbgName} 1 times")).Should().HaveCountGreaterThan(0);
testLogger.Lines.Last(line => line.Contains("Failed reading"))
.Should()
.Contain(
$"Failed reading {providerWithException.DbgName} {MetricsCollector.MaxTryWithoutSuccess} consecutively - the agent won't try reading {providerWithException.DbgName} anymore");
//make sure GetValue() in MetricsProviderWithException is not called anymore:
for (var i = 0; i < 10; i++)
{
mc.CollectAllMetrics();
}
var logLineBeforeStage2 = testLogger.Lines.Count;
//no more logs, no more calls to GetValue():
providerWithException.NumberOfGetValueCalls.Should().Be(MetricsCollector.MaxTryWithoutSuccess);
testLogger.Lines.Count.Should().Be(logLineBeforeStage2);
}
}
public void ProviderWithException()
{
var mockPayloadSender = new MockPayloadSender();
var testLogger = new TestLogger(LogLevel.Information);
var mc = new MetricsCollector(testLogger, mockPayloadSender, new TestAgentConfigurationReader(testLogger, "Information"));
mc.MetricsProviders.Clear();
var providerWithException = new MetricsProviderWithException();
mc.MetricsProviders.Add(providerWithException);
for (var i = 0; i < MetricsCollector.MaxTryWithoutSuccess; i++)
{
mc.CollectAllMetrics();
}
providerWithException.NumberOfGetValueCalls.Should().Be(MetricsCollector.MaxTryWithoutSuccess);
// *2 because exceptions are logged in a new line, + 2 because 1) printing the metricsinterval and 2) printing that the given metrics
// wont be collected anymore:
testLogger.Lines.Count.Should().Be(MetricsCollector.MaxTryWithoutSuccess * 2 + 2);
testLogger.Lines[1].Should().Contain($"Failed reading {providerWithException.DbgName} 1 times");
testLogger.Lines.Last()
.Should()
.Contain(
$"Failed reading {providerWithException.DbgName} {MetricsCollector.MaxTryWithoutSuccess} consecutively - the agent won't try reading {providerWithException.DbgName} anymore");
//make sure GetValue() in MetricsProviderWithException is not called anymore:
for (var i = 0; i < 10; i++)
{
mc.CollectAllMetrics();
}
//no more logs, no more call to GetValue():
providerWithException.NumberOfGetValueCalls.Should().Be(MetricsCollector.MaxTryWithoutSuccess);
testLogger.Lines.Count.Should().Be(MetricsCollector.MaxTryWithoutSuccess * 2 + 2);
}