public static async Task <HttpResponseMessage> RunAsync(
[HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = "analyze")] 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)
IExtendedTracer tracer = childContainer.Resolve <IExtendedTracer>();
tracer.TraceInformation($"Analyze function request received with invocation Id {context.InvocationId}");
tracer.AddCustomProperty("FunctionName", context.FunctionName);
tracer.AddCustomProperty("InvocationId", context.InvocationId.ToString("N", CultureInfo.InvariantCulture));
try
{
// Trace app counters (before analysis)
tracer.TraceAppCounters();
// Read the request
SmartDetectorExecutionRequest smartDetectorExecutionRequest = await request.Content.ReadAsAsync <SmartDetectorExecutionRequest>(cancellationToken);
tracer.AddCustomProperty("SmartDetectorId", smartDetectorExecutionRequest.SmartDetectorId);
tracer.TraceInformation($"Analyze request received: {JsonConvert.SerializeObject(smartDetectorExecutionRequest)}");
// Process the request
ISmartDetectorRunner runner = childContainer.Resolve <ISmartDetectorRunner>();
bool shouldDetectorTrace = bool.Parse(ConfigurationReader.ReadConfig("ShouldDetectorTrace", required: true));
List <ContractsAlert> alertPresentations = await runner.RunAsync(smartDetectorExecutionRequest, shouldDetectorTrace, cancellationToken);
tracer.TraceInformation($"Analyze completed, returning {alertPresentations.Count} Alerts");
// 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(alertPresentations), 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();
}
}
}
public void WhenRunningSmartDetectorThenCancellationIsHandledGracefully()
{
// Notify the Smart Detector that it should get stuck and wait for cancellation
this.smartDetector.ShouldStuck = true;
// Run the Smart Detector asynchronously
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
Task t = runner.RunAsync(this.request, true, cancellationTokenSource.Token);
SpinWait.SpinUntil(() => this.smartDetector.IsRunning);
// Cancel and wait for expected result
cancellationTokenSource.Cancel();
try
{
t.Wait(TimeSpan.FromSeconds(10));
}
catch (AggregateException e)
{
var ftrsde = e.InnerExceptions.Single() as FailedToRunSmartDetectorException;
Assert.IsNotNull(ftrsde, $"Expected to get inner exception of type {typeof(FailedToRunSmartDetectorException).Name}");
Assert.IsNull(ftrsde.InnerException, "e.InnerException != null");
Assert.IsTrue(ftrsde.Message.Contains(typeof(TaskCanceledException).Name), "e.Message.Contains(typeof(TaskCanceledException).Name)");
Assert.IsTrue(this.smartDetector.WasCanceled, "The Smart Detector was not canceled!");
throw;
}
}
/// <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 alerts presentations generated by the Smart Detector</returns>
private static async Task <List <ContractsAlert> > RunSmartDetectorAsync(SmartDetectorExecutionRequest request, CancellationToken cancellationToken)
{
ISmartDetectorRunner smartDetectorRunner = container.Resolve <ISmartDetectorRunner>();
bool shouldDetectorTrace = bool.Parse(ConfigurationReader.ReadConfig("ShouldDetectorTrace", required: true));
return(await smartDetectorRunner.RunAsync(request, shouldDetectorTrace, cancellationToken));
}
public async Task WhenRunningSmartDetectorThenCustomExceptionsAreHandledCorrectly()
{
// Notify the Smart Detector that it should throw a custom exception
this.smartDetector.ShouldThrowCustom = true;
// Run the Smart Detector
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
await runner.RunAsync(this.request, true, default(CancellationToken));
}
public async Task WhenRunningSmartDetectorThenTheCorrectAlertIsReturned()
{
// Run the Smart Detector and validate results
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
List <ContractsAlert> contractsAlerts = await runner.RunAsync(this.request, true, default(CancellationToken));
Assert.IsNotNull(contractsAlerts, "Presentation list is null");
Assert.AreEqual(1, contractsAlerts.Count);
Assert.AreEqual("Test title", contractsAlerts.Single().Title);
}
public static async Task <HttpResponseMessage> RunAsync(
[HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = "analyze")] 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($"Analyze function request received with invocation Id {context.InvocationId}");
tracer.AddCustomProperty("FunctionName", context.FunctionName);
tracer.AddCustomProperty("InvocationId", context.InvocationId.ToString("N"));
try
{
// Trace app counters (before analysis)
tracer.TraceAppCounters();
// Read the request
SmartDetectorExecutionRequest smartDetectorExecutionRequest = await request.Content.ReadAsAsync <SmartDetectorExecutionRequest>(cancellationToken);
tracer.AddCustomProperty("SmartDetectorId", smartDetectorExecutionRequest.SmartDetectorId);
tracer.TraceInformation($"Analyze request received: {JsonConvert.SerializeObject(smartDetectorExecutionRequest)}");
// Process the request
ISmartDetectorRunner runner = childContainer.Resolve <ISmartDetectorRunner>();
List <ContractsAlert> alertPresentations = await runner.RunAsync(smartDetectorExecutionRequest, cancellationToken);
tracer.TraceInformation($"Analyze completed, returning {alertPresentations.Count} Alerts");
// Return the generated presentations
return(request.CreateResponse(HttpStatusCode.OK, alertPresentations));
}
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();
}
}
}
public async Task WhenRunningSmartDetectorThenStateRepositoryIsCreatedAndPassedToSmartDetector()
{
// Setup mocks
var stateRepositoryMock = new Mock <IStateRepository>();
var stateRepositoryFactoryMock = new Mock <IStateRepositoryFactory>();
stateRepositoryFactoryMock.Setup(m => m.Create(It.IsAny <string>(), It.IsAny <string>())).Returns(stateRepositoryMock.Object);
this.testContainer.RegisterInstance <IStateRepositoryFactory>(stateRepositoryFactoryMock.Object);
// Run the Smart Detector
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
List <ContractsAlert> contractsAlerts = await runner.RunAsync(this.request, true, default(CancellationToken));
// Assert
stateRepositoryFactoryMock.Verify(m => m.Create(It.IsAny <string>(), It.IsAny <string>()));
stateRepositoryMock.Verify(m => m.StoreStateAsync("test key", "test state", It.IsAny <CancellationToken>()));
}
public async Task WhenRunningSmartDetectorThenExceptionsAreHandledCorrectly()
{
// Notify the Smart Detector that it should throw an exception
this.smartDetector.ShouldThrow = true;
// Run the Smart Detector
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
try
{
await runner.RunAsync(this.request, default(CancellationToken));
}
catch (SmartDetectorCustomException e) when(e.SmartDetectorExceptionType == typeof(DivideByZeroException).ToString())
{
// Expected exception
}
}
public async Task WhenRunningSmartDetectorThenExceptionsAreHandledCorrectly()
{
// Notify the Smart Detector that it should throw an exception
this.smartDetector.ShouldThrow = true;
// Run the Smart Detector
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
try
{
await runner.RunAsync(this.request, 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 void WhenRunningSmartDetectorThenCancellationIsHandledGracefully()
{
// Notify the Smart Detector that it should get stuck and wait for cancellation
this.smartDetector.ShouldStuck = true;
// Run the Smart Detector asynchronously
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
Task t = runner.RunAsync(this.request, cancellationTokenSource.Token);
SpinWait.SpinUntil(() => this.smartDetector.IsRunning);
// Cancel and wait for expected result
cancellationTokenSource.Cancel();
try
{
t.Wait(TimeSpan.FromSeconds(10));
}
catch (AggregateException e) when((e.InnerExceptions.Single() as SmartDetectorCustomException).SmartDetectorExceptionType == typeof(TaskCanceledException).ToString())
{
Assert.IsTrue(this.smartDetector.WasCanceled, "The Smart Detector was not canceled!");
}
}
private async Task RunSmartDetectorWithResourceTypes(ResourceType requestResourceType, ResourceType smartDetectorResourceType, bool shouldFail)
{
this.TestInitialize(requestResourceType, smartDetectorResourceType);
ISmartDetectorRunner runner = this.testContainer.Resolve <ISmartDetectorRunner>();
try
{
List <ContractsAlert> alertPresentations = await runner.RunAsync(this.request, true, default(CancellationToken));
if (shouldFail)
{
Assert.Fail("An exception should have been thrown - resource types are not compatible");
}
Assert.AreEqual(1, alertPresentations.Count);
}
catch (IncompatibleResourceTypesException)
{
if (!shouldFail)
{
throw;
}
}
}
/// <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 alerts presentations generated by the Smart Detector</returns>
private static async Task <List <ContractsAlert> > RunSmartDetectorAsync(SmartDetectorExecutionRequest request, CancellationToken cancellationToken)
{
ISmartDetectorRunner smartDetectorRunner = container.Resolve <ISmartDetectorRunner>();
return(await smartDetectorRunner.RunAsync(request, cancellationToken));
}