Hey I m having trouble creating a lambda layer containing `a Serverless Stack #help

Hey, I'm having trouble creating a lambda layer co...

Jędrzej Kuryło

01/30/2022, 3:30 PM

Hey, I'm having trouble creating a lambda layer containing

aws-sdk

. I copied

node_modules/aws-sdk

, but now lambdas fail because of some other packages missing, which are dependencies of

aws-sdk

. I added the ones that I saw missing in error messages

jmespath

and

xml2js

to the layer, but now it's failing because of missing

xmlbuilder

, which is a dependency of

xml2js

... There must be a better way to do that! 🙃

Jędrzej Kuryło

01/30/2022, 3:31 PM

This is how I create the layer folder

Copy code

#!/bin/bash

echo "Cleaning up workspace ..."
rm -rf .layers/aws-sdk

echo "Creating AWS SDK layer ..."
mkdir -p .layers/aws-sdk/nodejs/node_modules
cp -r node_modules/aws-sdk .layers/aws-sdk/nodejs/node_modules
cp -r node_modules/jmespath .layers/aws-sdk/nodejs/node_modules
cp -r node_modules/xml2js .layers/aws-sdk/nodejs/node_modules
cp -r node_modules/xmlbuilder .layers/aws-sdk/nodejs/node_modules

echo "AWS SDK layer is ready!"

and here's my layer config

Copy code

const defaultFunctionProps = {
      bundle: {
        externalModules: ['@prisma/client', '@shopcat/prisma', 'aws-sdk', 'aws-lambda'],
      },
      layers: [
        new lambda.LayerVersion(this, 'PrismaLayer', {
          code: lambda.Code.fromAsset('.layers/prisma'),
        }),
        new lambda.LayerVersion(this, 'AwsSdkLayer', {
          code: lambda.Code.fromAsset('.layers/aws-sdk'),
        }),
      ],
      permissions: ['sqs'],
    };

Frank

01/31/2022, 5:36 AM

Hey @Jędrzej Kuryło, can you try npm installing

aws-sdk

into the

.layers/aws-sdk

folder? ie.

Copy code

// clear out everything in .layers/aws-sdk
cd .layers/aws-sdk
npm init -y
npm install --save aws-sdk

Frank

01/31/2022, 5:37 AM

This way the node_modules should have all the dependencies of

aws-sdk

Jędrzej Kuryło

01/31/2022, 6:15 AM

oh, didn't think of that 😅 I followed some examples I found online for prisma and adapted them for aws-sdk

Jędrzej Kuryło

01/31/2022, 6:15 AM

thanks! i'll give it a try

Jędrzej Kuryło

01/31/2022, 6:15 AM

seems obvious now 😅

Open in Slack

Previous Next