public void a_performance_counter_can_be_defined_from_a_category_and_a_counter()
{
var counter = new PerformanceCounterDefinition("\\category\\counter");
Assert.That(counter.CategoryName, Is.EqualTo("category"));
Assert.That(counter.CounterName, Is.EqualTo("counter"));
Assert.That(counter.InstanceName, Is.Null);
}
public void a_performance_counter_can_be_defined_from_a_category_with_a_particular_instance_and_a_counter()
{
var counter = new PerformanceCounterDefinition("\\category(instance)\\counter");
Assert.That(counter.CategoryName, Is.EqualTo("category"));
Assert.That(counter.CounterName, Is.EqualTo("counter"));
Assert.That(counter.InstanceName, Is.EqualTo("instance"));
Assert.That(counter.AllInstances, Is.False);
}
public IEnumerable <Sample> QueryValue(string path)
{
try
{
var samples = new List <Sample>();
var definition = new PerformanceCounterDefinition(path);
if (definition.AllInstances)
{
var instances = _categoryRepository.GetInstances(definition.CategoryName);
foreach (var instance in instances)
{
var value = _registry.Read(definition.CategoryName, definition.CounterName, instance);
if (value.HasValue)
{
samples.Add(new Sample(instance, value.Value));
}
}
}
else
{
var value = _registry.Read(definition.CategoryName, definition.CounterName, definition.InstanceName);
if (value.HasValue)
{
samples.Add(new Sample(definition.InstanceName, value.Value));
}
}
return(samples);
}
catch (Exception ex)
{
ex.Data.Add("Path", path);
Log.Error("Exception occurred querying performance counter", ex);
}
return(Enumerable.Empty <Sample>());
}
public IEnumerable<Sample> QueryValue(string path)
{
try
{
var samples = new List<Sample>();
var definition = new PerformanceCounterDefinition(path);
if (definition.AllInstances)
{
var instances = _categoryRepository.GetInstances(definition.CategoryName);
foreach (var instance in instances)
{
var value = _registry.Read(definition.CategoryName, definition.CounterName, instance);
if (value.HasValue)
{
samples.Add(new Sample(instance, value.Value));
}
}
}
else
{
var value = _registry.Read(definition.CategoryName, definition.CounterName, definition.InstanceName);
if (value.HasValue)
{
samples.Add(new Sample(definition.InstanceName, value.Value));
}
}
return samples;
}
catch (Exception ex)
{
ex.Data.Add("Path", path);
Log.Error("Exception occurred querying performance counter", ex);
}
return Enumerable.Empty<Sample>();
}
