This is a work in progress.

This project is a skeleton that can be used to deploy your AWS Lambdas using Terraform. To make it a bit useful - each lambda is a cron job. Two versions are available : JavaScript and Scala.

Prerequisites

Install Terraform, Node and Scala

$ brew install node sbt terraform

Make sure you have AWS keys setup.

$export AWS_ACCESS_KEY_ID=[your access key id]
$export AWS_SECRET_ACCESS_KEY=[your secret access key]

To run example successfully make sure an AWS user has following IAM Policies attached:

• CloudWatchFullAccess
• IAMFullAccess
• AWSLambdaFullAccess

Warning: These policies should never be used in production. You would probable use some static policies defined by your AWS administrator.

#Cron jobs

The cron jobs are written in Scala/Node.

For illustration purpose both jobs just print logs into Cloudwatch every minute.

Run

There are 2 parts in AWS Lambda deployment. First we have to build them and second we have to deploy them.

Building javascript project:

$ cd js && npm run package

Deployment with Terraform:

$ cd terraform 
$ terraform plan 
$ terraform apply

Run terraform plan first to make sure the changes are correct.

After running this you should see following output :

Outputs:

js_cron_job = https://console.aws.amazon.com/lambda/home?region=us-east-1#/functions/js_cron
js_cron_job_logs = https://console.aws.amazon.com/cloudwatch/home?region=us-east-1#logStream:group=%252Faws%252Flambda%252Fjs_cron

You can access js_cron_job_logs or scala_cron_job_logs to see that jobs are actually running and producing results every minute.

You can repeat this process a couple of times - terraform will deploy when there are changes.

Cleanup

After you finished, you can cleanup all AWS resources by running :

$ terraform destroy