TypeError: Cannot read properties of undefined (reading 'then')

[Chelsea Haralson]

Expected Behavior

No issues

Actual Behavior

When invoking my lambda function, I get this error coming from the datadog library:

TypeError: Cannot read properties of undefined (reading 'then')
,
    at /opt/nodejs/node_modules/dd-trace/packages/dd-trace/src/lambda/handler.js:89:43
,
    at /opt/nodejs/node_modules/datadog-lambda-js/utils/handler.js:166:25
,
    at /opt/nodejs/node_modules/datadog-lambda-js/index.js:223:70
,
    at step (/opt/nodejs/node_modules/datadog-lambda-js/index.js:44:23)
,
    at Object.next (/opt/nodejs/node_modules/datadog-lambda-js/index.js:25:53)
,
    at /opt/nodejs/node_modules/datadog-lambda-js/index.js:19:71
,
    at new Promise (<anonymous>)
,
    at __awaiter (/opt/nodejs/node_modules/datadog-lambda-js/index.js:15:12)
,
    at traceListenerOnWrap (/opt/nodejs/node_modules/datadog-lambda-js/index.js:200:36)
,
    at /opt/nodejs/node_modules/dd-trace/packages/dd-trace/src/tracer.js:103:56

This just started happening yesterday. Previously it worked with no code changes.

Specifications

• Datadog Lambda Layer version: I am using the latest version of "serverless-plugin-datadog": "5.36.0"
• Node version: I tried both 16 and 18 - happens in both
• I believe this pull request could have caused the issue: DataDog/dd-trace-js@1538225

[AJ Stuyvenberg]

Hi @chelseaharalson - thanks for reaching out!
DataDog/dd-trace-js#3278 definitely seems suspect here - would you happen to have a simple lambda handler which reproduces this? Could you share more about the installation and instrumentation process you're using?

Thanks!

[Chelsea Haralson]

Hi @astuyve - thanks for taking a look!

I'm going to paste some code, but take out some of the body. It looks like this:

/******************************************************/
// Okta lambda authorizer for Amazon API Gateway

require('dotenv').config();
const OktaJwtVerifier = require('@okta/jwt-verifier');

/******************************************************/

const oktaJwtVerifier = new OktaJwtVerifier({
  issuer: process.env.ISSUER, // required
  clientId: process.env.CLIENT_ID, // required
  assertClaims: {
    aud: process.env.AUDIENCE
  }
});

const AuthPolicy = require('./auth-policy');

/******************************************************/

exports.handler = function (event, context) {

  if (arr[0] !== "Bearer") {
    var policy = new AuthPolicy(...);
    policy.allowAllMethods();
    return context.succeed(policy.build())
  }

  oktaJwtVerifier.verifyAccessToken(access_token)
    .then(jwt => {
      var claims = jwt.claims;
      var policyContext = {
        sub: claims.sub
      }

      var policy = new AuthPolicy(...);
      policy.allowAllMethods()
      return context.succeed(policy.build());
    })
    .catch(err => {
      console.log(err)
      return context.fail('Unauthorized');
    });
}

[AJ Stuyvenberg]

That's perfect, thank you so much!

I'll work on reproducing and fixing this issue and update this when it's ready!

Thanks!

[AJ Stuyvenberg]

Hey! I just merged a fix for this in dd-trace: DataDog/dd-trace-js#3404

I'll update this ticket when we publish a new version, thanks!

[AJ Stuyvenberg]

Hi, we're drafting the dd-trace release now and then I will release this library.

Thank you for your patience!

[AJ Stuyvenberg]

This should be fixed in 7.95 and layer 95!

[frederick-straub]

Thank you for keeping me updated!

…

On Tue, Jul 25, 2023 at 9:06 AM AJ Stuyvenberg ***@***.***> wrote: This should be fixed in 7.95 and layer 95! — Reply to this email directly, view it on GitHub <#404 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A5364KDTWUG4FRZD7BOTFBTXR7VHVANCNFSM6AAAAAA2CPUOAA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[Chelsea Haralson]

Thank you so much! @astuyve