Minimal Clojurescript aws x-ray lambda cljs-lambda

README.md

The basics here are to make sure you include the externs for advanced compliation and then to wrap the S3 client with an AWSXray capture client.

(def S3 (nodejs/require "aws-sdk/clients/s3"))
(def s3-client (S3. (clj->js {:httpOptions {:timeout 10000}})))

vs

(def S3 (nodejs/require "aws-sdk/clients/s3"))
(def AWSXRay (nodejs/require "aws-xray-sdk"))
(def s3-client (.captureAWSClient AWSXRay (S3. (clj->js {:httpOptions {:timeout 10000}}))))

References:

1. https://docs.aws.amazon.com/xray/latest/devguide/xray-sdk-nodejs-awssdkclients.html
2. https://github.com/cljsjs/packages/wiki/Creating-Externs

project.clj

(defproject ...

  :npm {:dependencies
        [[aws-sdk            "2.7.15"]
         [aws-xray-sdk       "1.1.1"]]}
         
 :cljsbuild
 {:builds [{:id "prod"
             :compiler {...
                        :externs       ["xray.js"]
                        :optimizations :advanced}}]})

xray.js

/** @interface */
function AWSXRay() {}
AWSXRay.prototype.captureAWSClient = function() {};