public void AdditionalLabels_AppliesUserAgent()
{
HttpExporterTestDataProvider.SetupHttpContext(_context, TestStatusCode, TestMethod, TestAction, TestController, TestUserAgent);
var middleware = new HttpRequestCountMiddleware(_next, new HttpRequestCountOptions
{
Registry = _registry,
AdditionalLabels = new Dictionary <string, Func <HttpContext, string> >
{
{ UserAgentLabel, HttpExporterTestDataProvider.GetUserAgent }
}
});
var child = (ChildBase)middleware.CreateChild(_context);
var expectedLabels = HttpRequestLabelNames.All.Concat(new[] { UserAgentLabel }).ToArray();
CollectionAssert.AreEquivalent(expectedLabels, child.Labels.Names);
CollectionAssert.AreEquivalent(new[]
{
TestStatusCode.ToString(),
TestMethod,
TestAction,
TestController,
TestUserAgent
}, child.Labels.Values);
}
public void CustomMetric_WithAllBuiltinLabels_AppliesLabels()
{
// Note that we do not configure Razor Pages, so there is no automatic "page" label.
// However, we still expect it to be fine for custom metrics to include any builtin label at any time.
SetupHttpContext(_context, TestStatusCode, TestMethod, TestAction, TestController);
var middleware = new HttpRequestCountMiddleware(_next, new HttpRequestCountOptions
{
Counter = _metrics.CreateCounter("xxx", "", new CounterConfiguration
{
LabelNames = HttpRequestLabelNames.All
})
});
var child = (ChildBase)middleware.CreateChild(_context);
CollectionAssert.AreEquivalent(HttpRequestLabelNames.All, child.Labels.Names);
CollectionAssert.AreEquivalent(new[]
{
TestStatusCode.ToString(),
TestMethod,
TestAction,
TestController,
TestEndpoint,
"" // page
}, child.Labels.Values);
}
public void Init()
{
_registry = Metrics.NewCustomRegistry();
_factory = Metrics.WithCustomRegistry(_registry);
_counter = _factory.CreateCounter("default_counter", "");
_requestDelegate = context => Task.CompletedTask;
_httpContext = new DefaultHttpContext();
_sut = new HttpRequestCountMiddleware(_requestDelegate, _counter);
}
public void Setup()
{
_registry = Metrics.NewCustomRegistry();
_factory = Metrics.WithCustomRegistry(_registry);
_inFlightMiddleware =
new HttpInFlightMiddleware(next => Task.CompletedTask, _factory.CreateGauge("in_flight", "help"));
_countMiddleware =
new HttpRequestCountMiddleware(next => Task.CompletedTask, _factory.CreateCounter("count", "help"));
_durationMiddleware =
new HttpRequestDurationMiddleware(next => Task.CompletedTask, _factory.CreateHistogram("duration", "help"));
}
public void CustomMetric_WithNoLabels_AppliesNoLabels()
{
SetupHttpContext(_context, TestStatusCode, TestMethod, TestAction, TestController);
var middleware = new HttpRequestCountMiddleware(_next, new HttpRequestCountOptions
{
Counter = _metrics.CreateCounter("xxx", "")
});
var child = (ChildBase)middleware.CreateChild(_context);
Assert.AreEqual(0, child.Labels.Count);
}
public async Task Given_multiple_requests_populates_method_label_correctly()
{
var counter = _factory.CreateCounter("counter", "", HttpRequestLabelNames.Method);
_sut = new HttpRequestCountMiddleware(_requestDelegate, counter);
var expectedMethod1 = await SetMethodAndInvoke("POST");
var expectedMethod2 = await SetMethodAndInvoke("GET");
var labels = counter.GetAllLabels();
var methods = GetLabelValues(labels, HttpRequestLabelNames.Method);
Assert.AreEqual(2, methods.Length);
CollectionAssert.AreEquivalent(new[] { expectedMethod1, expectedMethod2 }, methods);
}
public async Task Given_multiple_requests_populates_code_label_correctly()
{
var counter = _factory.CreateCounter("counter", "", HttpRequestLabelNames.Code);
_sut = new HttpRequestCountMiddleware(_requestDelegate, counter);
var expectedStatusCode1 = await SetStatusCodeAndInvoke(400);
var expectedStatusCode2 = await SetStatusCodeAndInvoke(401);
var labels = counter.GetAllLabels();
var codes = GetLabelValues(labels, HttpRequestLabelNames.Code);
Assert.AreEqual(2, codes.Length);
CollectionAssert.AreEquivalent(new[] { expectedStatusCode1.ToString(), expectedStatusCode2.ToString() }, codes);
}
public async Task Given_multiple_requests_populates_action_label_correctly()
{
var counter = _factory.CreateCounter("counter", "", HttpRequestLabelNames.Action);
_sut = new HttpRequestCountMiddleware(_requestDelegate, counter);
var expectedAction1 = await SetActionAndInvoke("Action1");
var expectedAction2 = await SetActionAndInvoke("Action2");
var labels = counter.GetAllLabels();
var actions = GetLabelValues(labels, HttpRequestLabelNames.Action);
Assert.AreEqual(2, actions.Length);
CollectionAssert.AreEquivalent(new[] { expectedAction1, expectedAction2 }, actions);
}
public async Task Given_multiple_requests_populates_controller_label_correctly()
{
var counter = _factory.CreateCounter("counter", "", HttpRequestLabelNames.Controller);
_sut = new HttpRequestCountMiddleware(_requestDelegate, counter);
var expectedController1 = await SetControllerAndInvoke("ValuesController");
var expectedController2 = await SetControllerAndInvoke("AuthController");
var labels = counter.GetAllLabels();
var controllers = GetLabelValues(labels, HttpRequestLabelNames.Controller);
Assert.AreEqual(2, controllers.Length);
CollectionAssert.AreEquivalent(new[] { expectedController1, expectedController2 }, controllers);
}
public void Setup()
{
_registry = Metrics.NewCustomRegistry();
_factory = Metrics.WithCustomRegistry(_registry);
_inProgressMiddleware = new HttpInProgressMiddleware(next => Task.CompletedTask, new HttpInProgressOptions
{
Gauge = _factory.CreateGauge("in_progress", "help")
});
_countMiddleware = new HttpRequestCountMiddleware(next => Task.CompletedTask, new HttpRequestCountOptions
{
Counter = _factory.CreateCounter("count", "help")
});
_durationMiddleware = new HttpRequestDurationMiddleware(next => Task.CompletedTask, new HttpRequestDurationOptions
{
Histogram = _factory.CreateHistogram("duration", "help")
});
}
public void CustomMetric_WithStandardLabels_AppliesStandardLabels()
{
SetupHttpContext(_context, TestStatusCode, TestMethod, TestAction, TestController);
var middleware = new HttpRequestCountMiddleware(_next, new HttpRequestCountOptions
{
Counter = _metrics.CreateCounter("xxx", "", HttpRequestLabelNames.All)
});
var child = (ChildBase)middleware.CreateChild(_context);
CollectionAssert.AreEquivalent(HttpRequestLabelNames.All, child.Labels.Names);
CollectionAssert.AreEquivalent(new[]
{
TestStatusCode.ToString(),
TestMethod,
TestAction,
TestController
}, child.Labels.Values);
}
public void DefaultMetric_AppliesStandardLabels()
{
SetupHttpContext(_context, TestStatusCode, TestMethod, TestAction, TestController);
var middleware = new HttpRequestCountMiddleware(_next, new HttpRequestCountOptions
{
Registry = _registry
});
var child = (ChildBase)middleware.CreateChild(_context);
CollectionAssert.AreEquivalent(HttpRequestLabelNames.All, child.Labels.Names);
CollectionAssert.AreEquivalent(new[]
{
TestStatusCode.ToString(),
TestMethod,
TestAction,
TestController
}, child.Labels.Values);
}
public async Task Given_request_populates_subset_of_labels_correctly()
{
var counter = _factory.CreateCounter("all_labels_counter", "", HttpRequestLabelNames.Action,
HttpRequestLabelNames.Controller);
var expectedAction = "ACTION";
var expectedController = "CONTROLLER";
SetupHttpContext(_httpContext, 200, "method", expectedAction, expectedController);
_sut = new HttpRequestCountMiddleware(_requestDelegate, counter);
await _sut.Invoke(_httpContext);
var labels = counter.GetAllLabels().Single();
Assert.IsNull(GetLabelValueOrDefault(labels, HttpRequestLabelNames.Code));
Assert.IsNull(GetLabelValueOrDefault(labels, HttpRequestLabelNames.Method));
Assert.AreEqual(expectedAction, GetLabelValueOrDefault(labels, HttpRequestLabelNames.Action));
Assert.AreEqual(expectedController, GetLabelValueOrDefault(labels, HttpRequestLabelNames.Controller));
}
