如何在AWS X-Ray管理控制台中打印自定义子分段？

Question

I have added a main segment for routes for my REST API which is written in Node.js and runs on a Lambda function. I have also enabled API gateway tracing for X-Ray. I want to see sql query timing as a subsegment from X-Ray console so I have used AWSXRay.captureAsyncFunc function and added it for all sql queries and I am able to print tracing logs. The following screenshot shows a segment and a subsegment for a GET request.

I want to see the subsegment in the AWS X-Ray management console. In the tracing section of the X-Ray, I can only see API Gateway and Lambda timings.

Is anyone know how to print custom subsegments in the X-Ray timeline?

When I click on raw data from X-Ray console, this is what I see. I want to be able to see my custom segment. Raw data tab shows just segments of API Gateway and Lambda.

Answer 1

What is the Node runtime version of your Lambda function? Which type of lambda event handler are you using? Which version of X-Ray Node SDK are you using? What style/library you are using for calling your SQL database? Is it a callback, promise or async/await?

The reason your getItem subsegment not shown is probably that in your tracing logs the subsegment doesn't have parent_id . This is potentially an issue with the compatibility between Lambda node runtime and X-Ray SDK for Nodejs such that the SQL subsegment is not properly captured.

Please feel free to open an issue on https://github.com/aws/aws-xray-sdk-node with the answers to the above questions provided so workaround/fixes can be addressed.

Answer 2

They are visible in the Raw Data tab in the console timeline view. That shows the exact same json as returned by BatchGetTraces API.