public async Task WhenRunningSmartDetectorCheckResolutionForNonSupportingDetectorThenExceptionIsThrown()
{
// Initialize the resolution state
this.InitializeResolutionState();
// Set the detector to be non supporting
this.alertResolutionCheckRequest.OriginalAnalysisRequest.SmartDetectorId = "1";
// Run the Smart Detector and validate results
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
await runner.CheckResolutionAsync(this.alertResolutionCheckRequest, true, default(CancellationToken));
}
public async Task WhenRunningSmartDetectorCheckResolutionThenCustomExceptionsAreHandledCorrectly()
{
// Initialize the resolution state
this.InitializeResolutionState();
// Notify the Smart Detector that it should throw a custom exception
this.autoResolveSmartDetector.ShouldThrowCustom = true;
// Run the Smart Detector
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
await runner.CheckResolutionAsync(this.alertResolutionCheckRequest, true, default(CancellationToken));
}
public async Task WhenRunningSmartDetectorCheckResolutionItIsDisposedIfItImplementsIDisposable()
{
// Initialize the resolution state
this.InitializeResolutionState();
// Make the detector a disposable one
this.autoResolveSmartDetector = new DisposableTestAutoResolveSmartDetector {
ExpectedResourceType = ResourceType.VirtualMachine
};
// Run the Smart Detector
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
await runner.CheckResolutionAsync(this.alertResolutionCheckRequest, true, default(CancellationToken));
Assert.IsTrue(((DisposableTestAutoResolveSmartDetector)this.autoResolveSmartDetector).WasDisposed);
}
/// <summary>
/// Run the Smart Detector, by delegating the call to the registered <see cref="ISmartDetectorRunner"/>
/// </summary>
/// <param name="request">The Smart Detector request</param>
/// <param name="cancellationToken">The cancellation token</param>
/// <returns>A <see cref="Task{TResult}"/>, returning the result of the call to the runner.</returns>
private static async Task <object> RunSmartDetectorAsync(SmartDetectorRunnerChildProcessInput request, CancellationToken cancellationToken)
{
ISmartDetectorRunner smartDetectorRunner = container.Resolve <ISmartDetectorRunner>();
bool shouldDetectorTrace = bool.Parse(ConfigurationReader.ReadConfig("ShouldDetectorTrace", required: true));
if (request.AnalysisRequest != null)
{
return(await smartDetectorRunner.AnalyzeAsync(request.AnalysisRequest, shouldDetectorTrace, cancellationToken));
}
else if (request.AlertResolutionCheckRequest != null)
{
return(await smartDetectorRunner.CheckResolutionAsync(request.AlertResolutionCheckRequest, shouldDetectorTrace, cancellationToken));
}
throw new ArgumentException("Unable to determine flow to run for Smart Detector", nameof(request));
}
public async Task WhenRunningSmartDetectorCheckResolutionAndAlertIsResolvedThenTheCorrectResponseIsReturned()
{
// Initialize the resolution state
this.InitializeResolutionState();
// Setup the detector to resolve the alert
this.autoResolveSmartDetector.ShouldResolve = true;
// Run the Smart Detector and validate results
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
ContractsAlertResolutionCheckResponse alertResolutionCheckResponse =
await runner.CheckResolutionAsync(this.alertResolutionCheckRequest, true, default(CancellationToken));
Assert.IsTrue(alertResolutionCheckResponse.ShouldBeResolved);
Assert.IsNull(alertResolutionCheckResponse.ResolutionParameters);
// Assert the detector's state
Assert.AreEqual(1, this.stateRepository.Count);
Assert.AreEqual("test state", this.stateRepository["test auto resolve key"]);
}
public async Task WhenRunningSmartDetectorCheckResolutionThenExceptionsAreHandledCorrectly()
{
// Initialize the resolution state
this.InitializeResolutionState();
// Notify the Smart Detector that it should throw an exception
this.autoResolveSmartDetector.ShouldThrow = true;
// Run the Smart Detector
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
try
{
await runner.CheckResolutionAsync(this.alertResolutionCheckRequest, true, default(CancellationToken));
}
catch (FailedToRunSmartDetectorException e)
{
// Expected exception
Assert.IsNull(e.InnerException, "e.InnerException != null");
Assert.IsTrue(e.Message.Contains(typeof(DivideByZeroException).Name), "e.Message.Contains(typeof(DivideByZeroException).Name)");
throw;
}
}
public async Task WhenRunningSmartDetectorCheckResolutionThenCancellationIsHandledGracefully()
{
// Initialize the resolution state
this.InitializeResolutionState();
// Notify the Smart Detector that it should get stuck and wait for cancellation
this.autoResolveSmartDetector.ShouldStuck = true;
// Run the Smart Detector asynchronously
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
Task t = runner.CheckResolutionAsync(this.alertResolutionCheckRequest, true, cancellationTokenSource.Token);
SpinWait.SpinUntil(() => this.autoResolveSmartDetector.IsRunning);
// Cancel and wait for expected result
cancellationTokenSource.Cancel();
FailedToRunSmartDetectorException ex = await Assert.ThrowsExceptionAsync <FailedToRunSmartDetectorException>(() => t);
Assert.IsNull(ex.InnerException, "e.InnerException != null");
Assert.IsTrue(ex.Message.Contains(typeof(TaskCanceledException).Name), "e.Message.Contains(typeof(TaskCanceledException).Name)");
Assert.IsTrue(this.autoResolveSmartDetector.WasCanceled, "The Smart Detector was not canceled!");
}
public async Task WhenRunningSmartDetectorCheckResolutionAndStateIsNotFoundThenExceptionIsThrown()
{
// Run the Smart Detector and validate results
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
await runner.CheckResolutionAsync(this.alertResolutionCheckRequest, true, default(CancellationToken));
}
public static async Task <HttpResponseMessage> RunAsync(
[HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = "checkResolution")] HttpRequestMessage request,
TraceWriter log,
ExecutionContext context,
CancellationToken cancellationToken)
{
using (IUnityContainer childContainer = Container.CreateChildContainer().WithTracer(log, true))
{
// Create a tracer for this run (that will also log to the specified TraceWriter)
ITracer tracer = childContainer.Resolve <ITracer>();
tracer.TraceInformation($"CheckResolution function request received with invocation Id {context.InvocationId}");
tracer.AddCustomProperty("FunctionName", context.FunctionName);
tracer.AddCustomProperty("InvocationId", context.InvocationId.ToString("N", CultureInfo.InvariantCulture));
try
{
// Trace app counters (before analysis)
tracer.TraceAppCounters();
// Read the request
AlertResolutionCheckRequest alertResolutionCheckRequest = await request.Content.ReadAsAsync <AlertResolutionCheckRequest>(cancellationToken);
tracer.AddCustomProperty("SmartDetectorId", alertResolutionCheckRequest.OriginalAnalysisRequest.SmartDetectorId);
tracer.TraceInformation($"CheckResolution request received: {JsonConvert.SerializeObject(alertResolutionCheckRequest)}");
// Process the request
ISmartDetectorRunner runner = childContainer.Resolve <ISmartDetectorRunner>();
bool shouldDetectorTrace = bool.Parse(ConfigurationReader.ReadConfig("ShouldDetectorTrace", required: true));
AlertResolutionCheckResponse alertResolutionCheckResponse =
await runner.CheckResolutionAsync(alertResolutionCheckRequest, shouldDetectorTrace, cancellationToken);
tracer.TraceInformation($"CheckResolution completed, alert {(alertResolutionCheckResponse.ShouldBeResolved ? "should" : "should not")} be resolved");
// Create the response with StringContent to prevent Json from serializing to a string
var response = request.CreateResponse(HttpStatusCode.OK);
response.Content = new StringContent(JsonConvert.SerializeObject(alertResolutionCheckResponse), Encoding.UTF8, "application/json");
return(response);
}
catch (AnalysisFailedException afe)
{
// Handle the exception
TopLevelExceptionHandler.TraceUnhandledException(afe, tracer, log);
// Return error status
return(request.CreateResponse(afe.StatusCode, afe.ReasonPhrase));
}
catch (Exception e)
{
// Handle the exception
TopLevelExceptionHandler.TraceUnhandledException(e, tracer, log);
// Return error status
return(request.CreateResponse(HttpStatusCode.InternalServerError, e.Message));
}
finally
{
// Trace app counters (after analysis)
tracer.TraceAppCounters();
}
}
}
