AWS CDK Lambda Function Cannot Find Asset at Path

Question

I'm trying to make a Lambda function using the AWS CDK They make it seem simple enough, but when I use cdk synth, it's giving me an error that the asset doesn't exist (even though it does exist). Here's my code:

cwd = os.getcwd()
aws_lambda.Function(self, "lambda_function",
     runtime=aws_lambda.Runtime.PYTHON_3_9,
     handler="index.handler",
     code=aws_lambda.Code.from_asset(os.path.join(cwd, "lambda_functions/lambda"))
)

The file exists, and the error message prints the directory I expect it to, so what's the issue here?

You didn't specific the .zip extension, so CDK is looking for a directory instead of your zip file — Nolan B.
– Nolan B., Commented Jul 25, 2022 at 3:21

Manav Chhibber · Accepted Answer · 2022-07-31 13:48:11Z

4

From documentation
The Code.from_asset(...) requires you to specify a directory or a .zip file. From your code you're referencing a directory which is not true. Change the path to add .zip extension.

cwd = os.getcwd()
aws_lambda.Function(self, "lambda_function",
     runtime=aws_lambda.Runtime.PYTHON_3_9,
     handler="index.handler",
     code=aws_lambda.Code.from_asset(os.path.join(cwd, "lambda_functions/lambda.zip"))
)

answered Jul 31, 2022 at 13:48

Manav Chhibber

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