AWS cloudfront Invalid Lambda Function Association Exception

Question

I am associating the lambda functions in the AWS Cloudfront. While associating the function in behavior patterns of web distribution of cloudfront, I am getting the below error:

com.amazonaws.services.cloudfront.model.InvalidLambdaFunctionAssociationException: The function has an invalid runtime for functions that are triggered by a CloudFront event: python2.7 Expecting: nodejs6.10 Function: arn:aws:lambda:us-east-1:316211033416:function:domain_redirects:1 (Service: AmazonCloudFront; Status Code: 400; Error Code: InvalidLambdaFunctionAssociation; Request ID: 8771bb2b-3b50-11e8-a02b-47ca03858fe8)

python lambda function:

from __future__ import print_function

import json

print('Loading function')


def domain_redirects(event, context):
    #print("Received event: " + json.dumps(event, indent=2))
    request=event['Records'][0]['cf']['request']
    headers=request['headers']
    mob_device=["android","iphone","googlebot-mobile"]
    user_agent=headers['user-agent'][0]['value'].lower()
    for device in mob_device:
        if device in user_agent:
            response = {
                'status':'302',
                'statusDescription':'Found',
                'headers': {
                    'location': [
                    {
                    'key': 'Location',
                    'value': 'http://m.bakewish.in'
                    }
                    ],
                }
            }
            # print (device + "detected")
            return response

The role which has created the lambda function has below trust relationship:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": [
          "lambda.amazonaws.com",
          "edgelambda.amazonaws.com"
        ]
      },
      "Action": "sts:AssumeRole"
    }
  ]
}

and below permissions:

1) AWSLambdaEdgeExecutionRole 2) CloudfrontFullAccess

Any help is appreciated!!

Thanks for the question, I was getting mixed up on the Policy Stuff. — user3888307

Stephen Stephen · Accepted Answer · 2018-04-08T19:53:17

Looking at the documentation it looks like you must use nodejs6.10 runtime for cloudfront to work with lambda.

You must create functions with the nodejs6.10 runtime property.

AWS cloudfront Invalid Lambda Function Association Exception

1 Answers