Cloudformation Lambda function, environment variables not available, input is not available - amazon-web-services

Question

Not sure where I am doing wrong. Below is my lambda code and cloudformation template.
Below is my lambda function:
import os
import boto3
def quickstart_lambda_handler(event, context):
print("event={}".format(event)) # nothing shows as k1:v1
print(os.environ) # nothing show in output as var1
print("environment variable var1: " + os.environ['var1'])
json_str = "{\"a1\":\"b1\"}"
bucket_name = "my-s3-bucket"
file_name = "qs.json"
s3_path = "cf-quickstart/" + file_name
s3 = boto3.resource("s3")
s3.Bucket(bucket_name).put_object(Key=s3_path, Body=json_str)
print("object stored in s3")
return s3_path
My cloud formation template is as below for lambda function and associated rule.
"QSLERole": {
"Description" : "Quick Start Lambda Execution Role",
"Type": "AWS::IAM::Role",
"Properties": {
"RoleName" : "QSLERole",
"AssumeRolePolicyDocument": {
"Version" : "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": [ "lambda.amazonaws.com" ]
},
"Action": [ "sts:AssumeRole" ]
}]
},
"Path": "/",
"Policies": [
{
"PolicyName": "root",
"PolicyDocument": {
"Version": "2012-10-17",
"Statement": [{
"Effect": "Allow",
"Action": ["logs:*"],
"Resource": "arn:aws:logs:*:*:*"
},
{
"Effect": "Allow",
"Action": "s3:PutObject",
"Resource": "*"
}
]
}
}]
}
},
"QSLambdaF": {
"Description" : "Quick Start Lambda Function",
"Type": "AWS::Lambda::Function",
"Properties": {
"Code": {
"S3Bucket": "my-s3-bucket",
"S3Key": "generate-quickstartjson.zip"
},
"Handler": "generate-quickstartjson.quickstart_lambda_handler",
"Runtime": "python2.7",
"Timeout": "30",
"Environment" : {
"Variables" : {
"var1" : "var1 value"
}
},
"Role": {
"Fn::GetAtt": [
"QSLERole",
"Arn"
]
}
}
},
"ScheduledRule": {
"Description" :"Cloud Watch Quick Start Event Rule",
"DependsOn" : [
"QSLambdaF","EC2Instance"],
"Type": "AWS::Events::Rule",
"Properties" : {
"Description" : "CloudWatch Event for generating output",
"ScheduleExpression" : "rate(1 minute)",
"State": "ENABLED",
"Targets" : [
{
"Arn": { "Fn::GetAtt": [
"QSLambdaF", "Arn"] },
"Detail" : {
"test" : "value"
},
"Input": "{\"k1\":\"v1\"}",
"Id" : "QSScheduledRuleV1"
}
]
}
},
"PEILambda": {
"Description" : "Permission For Events To Invoke Lambda Function",
"Type": "AWS::Lambda::Permission",
"Properties" : {
"FunctionName": { "Ref": "QSLambdaF"},
"Action": "lambda:InvokeFunction",
"Principal": "events.amazonaws.com",
"SourceArn": { "Fn::GetAtt": [
"ScheduledRule", "Arn"] }
}
},
--- ec2 instance creation below with security group
Niether environment variables are available nor Input fields are available in lambda lambda.
"Input": "{\"k1\":\"v1\"}",
Please let me know where I am wrong. Thanks for the help.

Answer 1

works well as is. I was using wrong template file :))