Cannot find module '@opentelemetry/api

[deepcrawltech]

Describe the bug
Get this error in lambda when bundling with esbuild.

Steps to reproduce
Create a lambda function using CDK NodeJSFunction factory. Add layers and configure bundling with:
externalModules: [
"@opentelemetry/api",
"@opentelemetry/sdk-node",
"@opentelemetry/auto-instrumentations-node",
"@opentelemetry/exporter-metrics-otlp-http",
"@opentelemetry/sdk-metrics",
],

What did you expect to see?
Lambda starts

What did you see instead?
I see @opentelemetry/api error

What version of collector/language SDK version did you use?
opentelemetry-nodejs-0_12_0

What language layer did you use?
nodejs

Additional context
This used to work with opentelemetry-nodejs-0_11_0

[serkan-ozal]

Hi @deepcrawltech,

What error logs do you see about @opentelemetry/api?

And I guess, it is caused by the bundling of OTEL JS layer itself. Since OTEL JS layer is bundled in the latest release (to reduce coldstart delay significantly: #1679), you can't use OTEL packages from layer itself as they are bundled and not visible by import/require in your code.

So, what I suggest you is that for the OTEL packages you directly reference in your own code (for ex. @opentelemetry/api in your case), keep them in your bundle (not define them as external).

In summary, can you try by removing "@opentelemetry/api" from externalModules from your CDK bundle config?

[deepcrawltech]

Yeah I can try that

[serkan-ozal]

Hi @deepcrawltech,

Had you a chance to try my suggestion? If so, did it work?

[deepcrawltech]

Yes it works that way