AWS ECS XRay and Step Function Integration

To address this issue, you need to ensure that the X-Ray trace context is propagated correctly between the Step Function and the ECS Fargate task. Here are a few steps you can take:

1. Step Function Configuration:

   • Make sure that your Step Function is configured to pass the X-Ray trace header (X-Amzn-Trace-Id) to the ECS Fargate task. You can do this by enabling Tracing in the Step Function state machine and setting PassResourceIdsInResponse to true.

2. ECS Task Definition:

   • In your ECS Task Definition, ensure that the container definition includes the X-Ray daemon sidecar container.
   • Configure your application container to pass the X-Ray trace header to the X-Ray daemon sidecar container. This can typically be done by setting the AWS_XRAY_DAEMON_ADDRESS environment variable to the IP address and port of the X-Ray daemon sidecar container.

3. Application Code:

   • In your application code (Python in this case), you need to correctly retrieve the X-Ray trace header from the incoming request and use it to create a new subsegment or segment.
   • Instead of using the trace ID from SdkHttpMetadata.AllHttpHeaders.X-Amzn-Trace-Id[0], you should use the trace header from the incoming request headers. This header should be automatically passed by ECS to your application container.
   • Use the AWS X-Ray SDK to create a new segment or subsegment using the trace header, and capture the necessary information within your application code.

By following these steps, you should be able to see the complete end-to-end trace in the X-Ray trace map, including the Step Function, ECS Fargate task, and any other services your application interacts with.

Let me know if this is helpful.