Lambda Function Does not Add Rule to Security Group - amazon-web-services

Question

I have this python 3.7 code that runs as well from my local computer. This is the code for my lambda function. However, when I test it in AWS, it does not add the inbound rule to the security group. I would like help in getting it to work. Again, when I run it from my local computer, it works.
import boto3
ec2 = boto3.client('ec2')
def modify_sg_add_rules(event, context):
response = ec2.authorize_security_group_ingress(
GroupName='boto3-sg',
IpPermissions=[
{
'FromPort': 1521,
'IpProtocol': 'tcp',
'IpRanges': [
{
'CidrIp': '12.345.67.890/32',
'Description': 'My home IP',
},
],
'ToPort': 1521,
},
],
DryRun=False
) #closes response
return response
#if __name__ == '__main__':
# modify_sg_add_rules()
These are the permission in the policy that is attached to a role:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"logs:CreateLogGroup",
"logs:CreateLogStream",
"logs:PutLogEvents"
],
"Resource": "arn:aws:logs:*:*:*"
},
{
"Effect": "Allow",
"Action": [
"ec2:DescribeSecurityGroups",
"ec2:AuthorizeSecurityGroupIngress",
"ec2:RevokeSecurityGroupIngress"
],
"Resource": "*"
}
]
}
Please, help me!
Thank you!
--Willie

Answer 1

Based on the comments.
The issue was caused by using wrong name for lambda function handler. Instead of modify_sg_add_rules it should be lambda_handler which is default name for the handler.
Thus, the solution was to rename modify_sg_add_rules into lambda_handler. The alternative is to change the default handler's name into modify_sg_add_rules.