private void ProcessEndCommand()
{
Entity entity = null;
try
{
entity = _recorder.GetEntity();
}
catch (EntityNotAvailableException e)
{
_recorder.TraceContext.HandleEntityMissing(_recorder, e, "Cannot get entity while processing end of Entity Framework command.");
return;
}
_recorder.EndSubsegment();
}
/// <summary>
/// Processes End request by ending subsegment.
/// </summary>
private void ProcessEndRequest(IExecutionContext executionContext)
{
var subsegment = AWSXRayRecorder.Instance.GetEntity();
var responseContext = executionContext.ResponseContext;
var requestContext = executionContext.RequestContext;
if (responseContext == null)
{
_logger.DebugFormat("Failed to handle AfterResponseEvent, because response is null.");
return;
}
var client = executionContext.RequestContext.ClientConfig;
if (client == null)
{
_logger.DebugFormat("Failed to handle AfterResponseEvent, because client from the Response Context is null");
return;
}
var serviceName = RemoveAmazonPrefixFromServiceName(requestContext.Request.ServiceName);
var operation = RemoveSuffix(requestContext.OriginalRequest.GetType().Name, "Request");
subsegment.Aws["region"] = client.RegionEndpoint?.SystemName;
subsegment.Aws["operation"] = operation;
if (responseContext.Response == null)
{
if (requestContext.Request.Headers.TryGetValue("x-amzn-RequestId", out string requestId))
{
subsegment.Aws["request_id"] = requestId;
}
// s3 doesn't follow request header id convention
else
{
if (requestContext.Request.Headers.TryGetValue(S3RequestIdHeaderKey, out requestId))
{
subsegment.Aws["request_id"] = requestId;
}
if (requestContext.Request.Headers.TryGetValue(S3ExtendedRequestIdHeaderKey, out requestId))
{
subsegment.Aws[ExtendedRquestIdSegmentKey] = requestId;
}
}
}
else
{
subsegment.Aws["request_id"] = responseContext.Response.ResponseMetadata.RequestId;
AddResponseSpecificInformation(serviceName, operation, responseContext.Response, subsegment.Aws);
}
if (responseContext.HttpResponse != null)
{
AddHttpInformation(responseContext.HttpResponse);
}
AddRequestSpecificInformation(serviceName, operation, requestContext.OriginalRequest, subsegment.Aws);
_recorder.EndSubsegment();
}
public void TestSubsegment()
{
_recorder.BeginSubsegment("subsegment1");
Subsegment subsegment1 = (Subsegment)AWSXRayRecorder.Instance.TraceContext.GetEntity();
FacadeSegment facadeSegment = (FacadeSegment)subsegment1.RootSegment;
_recorder.EndSubsegment();
Assert.AreEqual(typeof(LambdaContextContainer), AWSXRayRecorder.Instance.TraceContext.GetType());
Assert.AreEqual(facadeSegment.GetType(), typeof(FacadeSegment));
Assert.IsFalse(facadeSegment.Subsegments.Contains(subsegment1)); // only subsegment is streamed
Assert.IsFalse(AWSXRayRecorder.Instance.TraceContext.IsEntityPresent()); // facade segment is cleared from AWSXRayRecorder.Instance.TraceContext
}
private void AfterResponseEventHandler(object sender, ResponseEventArgs e)
{
if (AppSettings.IsXRayTracingDisabled)
{
_logger.DebugFormat("X-Ray tracing is disabled, do not handle AWSSDK response.");
return;
}
var args = e as WebServiceResponseEventArgs;
if (args == null)
{
_logger.DebugFormat("Failed to handle AfterResponseEvent, because e can't be converted to WebServiceResponseEventArgs.");
return;
}
var client = sender as AmazonServiceClient;
if (client == null)
{
_logger.DebugFormat("Failed to handle AfterResponseEvent, because sender can't be converted to AmazonServiceClient.");
return;
}
var serviceName = RemoveAmazonPrefixFromServiceName(args.ServiceName);
var operation = RemoveSuffix(args.Request.GetType().Name, "Request");
if (AWSXRaySDKUtils.IsBlacklistedOperation(serviceName, operation))
{
return;
}
var subsegment = AWSXRayRecorder.Instance.GetEntity();
subsegment.Aws["region"] = client.Config.RegionEndpoint?.SystemName;
subsegment.Aws["operation"] = operation;
subsegment.Aws["request_id"] = args.Response.ResponseMetadata.RequestId;
AddRequestSpecificInformation(serviceName, operation, args.Request, subsegment.Aws);
AddResponseSpecificInformation(serviceName, operation, args.Response, subsegment.Aws);
_recorder.EndSubsegment();
}
public async Task <NumberPlateTrigger> FunctionHandler(S3Event evnt, ILambdaContext context)
{
var s3Event = evnt.Records?[0].S3;
context.Logger.LogLine("EVENT Received: " + JsonConvert.SerializeObject(s3Event));
if (regExNumberPlate == null)
{
context.Logger.LogLine("regExNumberPlate is not yet populated. Calling getNumberPlateFromSecretsManager()...");
regExNumberPlate = await getNumberPlateFromSecretsManager(context);
context.Logger.LogLine("regExNumberPlate is " + regExNumberPlate);
}
NumberPlateTrigger result = new NumberPlateTrigger
{
bucket = s3Event.Bucket.Name,
key = s3Event.Object.Key,
contentType = "",
contentLength = s3Event.Object.Size,
charge = int.Parse(Environment.GetEnvironmentVariable("TollgateCharge")),
numberPlate = new NumberPlate()
{
numberPlateRegEx = this.regExNumberPlate,
detected = false
}
};
AWSXRayRecorder recorder = AWSXRayRecorder.Instance;
recorder.BeginSubsegment("TollGantry::Detect Number Plate in Captured Image");
recorder.AddMetadata("bucket", s3Event.Bucket.Name);
recorder.AddMetadata("key", s3Event.Object.Key);
recorder.AddMetadata("regex", this.regExNumberPlate);
//
// TODO: Call Rekognition to detect text in the captured image
//
recorder.EndSubsegment();
//
// Kick off the step function
//
context.Logger.LogLine("Starting the state machine");
IAmazonStepFunctions stepFunctionsClient = new AmazonStepFunctionsClient();
await stepFunctionsClient.StartExecutionAsync(new StartExecutionRequest()
{
StateMachineArn = Environment.GetEnvironmentVariable("NumberPlateProcessStateMachine"), Input = JsonConvert.SerializeObject(result)
});
context.Logger.LogLine("State machine started");
return(result);
}
/// <inheritdoc />
public async Task <TResult> InterceptAsync <TResult>(Func <Task <TResult> > method, DbCommand command)
{
_recorder.BeginSubsegment(BuildSubsegmentName(command));
try
{
_recorder.SetNamespace("remote");
var ret = await method();
CollectSqlInformation(command);
return(ret);
}
catch (Exception e)
{
_recorder.AddException(e);
throw;
}
finally
{
_recorder.EndSubsegment();
}
}
public void TestTryParseSubsegment()
{
using (var recorder = new AWSXRayRecorder())
{
recorder.BeginSegment("TraceHeaderTest", TraceId);
recorder.BeginSubsegment("subjob");
var subsegment = TraceContext.GetEntity();
TraceHeader header;
Assert.IsTrue(TraceHeader.TryParse(subsegment, out header));
Assert.AreEqual(TraceId, header.RootTraceId);
Assert.AreEqual(subsegment.Id, header.ParentId);
Assert.AreEqual(SampleDecision.Sampled, header.Sampled);
recorder.EndSubsegment();
recorder.EndSegment();
}
}
/// <summary>
/// Process http response.
/// </summary>
internal static void ProcessResponse(HttpContext httpContext)
{
HttpResponse response = httpContext.Response;
if (!AWSXRayRecorder.Instance.IsTracingDisabled())
{
var responseAttributes = PopulateResponseAttributes(response);
_recorder.AddHttpInformation("response", responseAttributes);
}
if (AWSXRayRecorder.IsLambda())
{
_recorder.EndSubsegment();
}
else
{
_recorder.EndSegment();
}
}
/// <summary>
/// Processes HTTP response
/// </summary>
private void ProcessHTTPResponse(HttpContext context)
{
HttpResponse response = context.Response;
if (!AWSXRayRecorder.Instance.IsTracingDisabled())
{
var responseAttributes = new Dictionary <string, object>();
PopulateResponseAttributes(response, responseAttributes);
_recorder.AddHttpInformation("response", responseAttributes);
}
if (AWSXRayRecorder.Instance.IsLambda())
{
_recorder.EndSubsegment();
}
else
{
_recorder.EndSegment();
}
}
public void TestLogErrorModeForContextMissingStrategy()
{
using (var recorder = new AWSXRayRecorder())
{
recorder.ContextMissingStrategy = ContextMissingStrategy.LOG_ERROR;
recorder.EndSegment();
recorder.BeginSubsegment("no segment");
recorder.EndSubsegment();
recorder.SetNamespace("dummy namespace");
recorder.AddAnnotation("key", "value");
recorder.AddHttpInformation("key", "value");
recorder.MarkError();
recorder.MarkFault();
recorder.MarkThrottle();
recorder.AddException(new ArgumentNullException());
recorder.AddPrecursorId(Entity.GenerateId());
recorder.AddSqlInformation("sqlKey", "value");
recorder.AddMetadata("key", "value");
}
}
private TResult Intercept <TResult>(Func <TResult> method)
{
AWSXRayRecorder recorder = AWSXRayRecorder.Instance;
recorder.BeginSubsegment(Connection.Database + "@" + SqlUtil.RemovePortNumberFromDataSource(Connection.DataSource));
try
{
recorder.SetNamespace("remote");
var ret = method();
CollectSqlInformation();
return(ret);
}
catch (Exception e)
{
recorder.AddException(e);
throw;
}
finally
{
recorder.EndSubsegment();
}
}
public void TestSyncCreateSegmentAndSubsegments()
{
_recorder.BeginSegment("parent", TraceId);
Segment parent = (Segment)AWSXRayRecorder.Instance.TraceContext.GetEntity();
_recorder.BeginSubsegment("child");
Subsegment child = (Subsegment)AWSXRayRecorder.Instance.TraceContext.GetEntity();
_recorder.EndSubsegment();
Assert.ReferenceEquals(AWSXRayRecorder.Instance.TraceContext.GetEntity(), parent);
_recorder.EndSegment();
Assert.ReferenceEquals(parent, child.Parent);
Assert.IsTrue(parent.Subsegments.Contains(child));
}
/// <summary>
/// Processes End request by ending subsegment.
/// </summary>
private void ProcessEndRequest(IExecutionContext executionContext)
{
Entity subsegment;
try
{
subsegment = _recorder.GetEntity();
}
catch (EntityNotAvailableException e)
{
_recorder.TraceContext.HandleEntityMissing(_recorder, e, "Cannot get entity from the trace context while processing response of AWS SDK request.");
return;
}
var responseContext = executionContext.ResponseContext;
var requestContext = executionContext.RequestContext;
if (responseContext == null)
{
_logger.DebugFormat("Failed to handle AfterResponseEvent, because response is null.");
return;
}
var client = executionContext.RequestContext.ClientConfig;
if (client == null)
{
_logger.DebugFormat("Failed to handle AfterResponseEvent, because client from the Response Context is null");
return;
}
var serviceName = RemoveAmazonPrefixFromServiceName(requestContext.Request.ServiceName);
var operation = RemoveSuffix(requestContext.OriginalRequest.GetType().Name, "Request");
subsegment.Aws["region"] = client.RegionEndpoint?.SystemName;
subsegment.Aws["operation"] = operation;
if (responseContext.Response == null)
{
if (requestContext.Request.Headers.TryGetValue("x-amzn-RequestId", out string requestId))
{
subsegment.Aws["request_id"] = requestId;
}
// s3 doesn't follow request header id convention
else
{
if (requestContext.Request.Headers.TryGetValue("x-amz-request-id", out requestId))
{
subsegment.Aws["request_id"] = requestId;
}
if (requestContext.Request.Headers.TryGetValue("x-amz-id-2", out requestId))
{
subsegment.Aws["id_2"] = requestId;
}
}
}
else
{
subsegment.Aws["request_id"] = responseContext.Response.ResponseMetadata.RequestId;
// try getting x-amz-id-2 if dealing with s3 request
if (responseContext.Response.ResponseMetadata.Metadata.TryGetValue("x-amz-id-2", out string extendedRequestId))
{
subsegment.Aws["id_2"] = extendedRequestId;
}
AddResponseSpecificInformation(serviceName, operation, responseContext.Response, subsegment.Aws);
}
if (responseContext.HttpResponse != null)
{
AddHttpInformation(responseContext.HttpResponse);
}
AddRequestSpecificInformation(serviceName, operation, requestContext.OriginalRequest, subsegment.Aws);
_recorder.EndSubsegment();
}
public async Task <NumberPlateTrigger> FunctionHandler(S3Event evnt, ILambdaContext context)
{
var s3Event = evnt.Records?[0].S3;
context.Logger.LogLine("EVENT Received: " + JsonConvert.SerializeObject(s3Event));
if (regExNumberPlate == null)
{
context.Logger.LogLine("regExNumberPlate is not yet populated. Calling getNumberPlateFromSecretsManager()...");
regExNumberPlate = await getNumberPlateFromSecretsManager(context);
context.Logger.LogLine("regExNumberPlate is " + regExNumberPlate);
}
//var response = await this.S3Client.GetObjectMetadataAsync(s3Event.Bucket.Name, s3Event.Object.Key);
//return response.Headers.ContentType;
NumberPlateTrigger result = new NumberPlateTrigger
{
bucket = s3Event.Bucket.Name,
key = s3Event.Object.Key,
contentType = "",
contentLength = s3Event.Object.Size,
charge = int.Parse(Environment.GetEnvironmentVariable("TollgateCharge")),
numberPlate = new NumberPlate()
{
numberPlateRegEx = this.regExNumberPlate,
detected = false
}
};
recorder.BeginSubsegment("TollGantry::Detect Number Plate in Captured Image");
recorder.AddMetadata("bucket", s3Event.Bucket.Name);
recorder.AddMetadata("key", s3Event.Object.Key);
recorder.AddMetadata("regex", this.regExNumberPlate);
S3Object s3Object = new S3Object();
s3Object.Bucket = s3Event.Bucket.Name;
s3Object.Name = s3Event.Object.Key;
DetectTextRequest detectTextReq = new DetectTextRequest {
Image = new Image {
S3Object = s3Object
}
};
context.Logger.LogLine("Calling Rekognition ... ");
DetectTextResponse detectTextResponse = await rekognitionClient.DetectTextAsync(detectTextReq);
context.Logger.LogLine($"Response from Rekognition: {JsonConvert.SerializeObject(detectTextResponse)}");
// Check if the a valid number was detected...
foreach (var textItem in detectTextResponse.TextDetections)
{
if (!result.numberPlate.detected && textItem.Type.Value == "LINE" && textItem.Confidence > float.Parse(Environment.GetEnvironmentVariable("RekognitionTextMinConfidence")))
{
Regex regex = new Regex(regExNumberPlate);
MatchCollection matches = regex.Matches(textItem.DetectedText);
context.Logger.LogLine($"Matches collection: {matches.Count}");
string plateNumber = "";
foreach (Match match in matches)
{
plateNumber += (match.Groups[1].Value + match.Groups[2].Value);
}
if (!string.IsNullOrEmpty(plateNumber))
{
result.numberPlate.detected = true;
result.numberPlate.confidence = textItem.Confidence;
result.numberPlate.numberPlateString = plateNumber;
context.Logger.LogLine($"A valid plate number was detected ({result.numberPlate.numberPlateString})");
}
}
}
recorder.EndSubsegment();
//
// At this point, we either know it is a valid number plate
// or it couldn't be determined with adequate confidence
// so we need manual intervention
//
//
// Kick off the step function
//
context.Logger.LogLine("Starting the state machine");
//TODO: add code to start the state machine
context.Logger.LogLine("State machine started");
return(result);
}
private void ProcessEndRequest(IExecutionContext executionContext)
{
Entity subSegment;
try
{
subSegment = _recorder.GetEntity();
}
catch (EntityNotAvailableException e)
{
_recorder.TraceContext.HandleEntityMissing(_recorder, e, "Cannot get entity from the trace context while processing response of AWS SDK request.");
return;
}
var responseContext = executionContext.ResponseContext;
var requestContext = executionContext.RequestContext;
if (responseContext == null)
{
return;
}
var client = executionContext.RequestContext.ClientConfig;
if (client == null)
{
return;
}
var serviceName = RemoveAmazonPrefixFromServiceName(requestContext.Request.ServiceName);
var operation = RemoveSuffix(requestContext.OriginalRequest.GetType().Name, "Request");
subSegment.Aws["region"] = client.RegionEndpoint?.SystemName;
subSegment.Aws["operation"] = operation;
if (responseContext.Response == null)
{
if (requestContext.Request.Headers.TryGetValue("x-amzn-RequestId", out var requestId))
{
subSegment.Aws["request_id"] = requestId;
}
// s3 doesn't follow request header id convention
else
{
if (requestContext.Request.Headers.TryGetValue(S3RequestIdHeaderKey, out requestId))
{
subSegment.Aws["request_id"] = requestId;
}
if (requestContext.Request.Headers.TryGetValue(S3ExtendedRequestIdHeaderKey, out requestId))
{
subSegment.Aws[ExtendedRequestIdSegmentKey] = requestId;
}
}
}
else
{
subSegment.Aws["request_id"] = responseContext.Response.ResponseMetadata.RequestId;
AddResponseSpecificInformation(serviceName, operation, responseContext.Response, subSegment.Aws);
}
if (responseContext.HttpResponse != null)
{
AddHttpInformation(responseContext.HttpResponse);
}
AddRequestSpecificInformation(serviceName, operation, requestContext.OriginalRequest, subSegment.Aws);
_recorder.EndSubsegment();
}
/// <summary>
/// Process to end subsegment
/// </summary>
internal static void ProcessEndCommand()
{
_recorder.EndSubsegment();
}
