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README.md

Triggering Lambda Functions on a Schedule

Preparation

In the root of this Chapter’s repo cd to the “503-Triggering-Lambda-Functions-on-a-Schedule” directory and follow the subsequent steps:

Zip up the lambda_function.py provided in the repository:

zip lambda_function.zip lambda_function.py

Create a Lambda function that we will trigger:

LAMBDA_ARN=$(aws lambda create-function \
--function-name AWSCookbook503Lambda \
--runtime python3.8 \
--package-type "Zip" \
--zip-file fileb://lambda_function.zip \
--handler lambda_function.lambda_handler --publish \
--role \
arn:aws:iam::$AWS_ACCOUNT_ID:role/AWSCookbookLambdaRole \
--output text --query FunctionArn)

Clean up

Remove the target from the rule:

aws events remove-targets --rule "EveryMinuteEvent" \
--ids "1"

Delete the rule:

aws events delete-rule --name "EveryMinuteEvent"

Delete the Lambda function:

aws lambda delete-function --function-name AWSCookbook503Lambda

Delete the Lambda CloudWatch log group:

aws logs delete-log-group \
--log-group-name /aws/lambda/AWSCookbook503Lambda

Unset the environment variable that you created manually:

unset LAMBDA_ARN
unset RULE_ARN