aws-lambda

What is this?

This is an example opta configuration file to deploy a simple lambda function on AWS that handles API calls from the internet.

What does this do?

It deploys a simple python lambda function with AWS API Gateway. It also sets up various other resources like VPCs, subnets.

Steps to deploy

1. Fill in the following required variables in the config file

• org_name
• account_id

2. Create a zip file for your lambda.

zip my-deployment-package.zip lambda_function.py

3. Run opta apply This will create all the required resources in your AWS account and deploy your lambda.

That's it. AWS lambda is deployed. You will see an output like this.

cloudwatch_log_group_name = "/aws/lambda/opta-lambdafunction-b0bf"
cloudwatch_log_group_url = "https://console.aws.amazon.com/cloudwatch/home?region=us-east-1#logsV2:log-groups/log-group/%2Faws%2Flambda%2Fopta-lambdafunction-b0bf"
function_arn = "arn:aws:lambda:us-east-1:828259620284:function:opta-lambdafunction-b0bf"
function_name = "opta-lambdafunction-b0bf"
kms_account_key_arn = "arn:aws:kms:us-east-1:828259620284:key/3a802e75-7f6f-4217-aabf-45ca0b7d9e37"
kms_account_key_id = "3a802e75-7f6f-4217-aabf-45ca0b7d9e37"
lambda_trigger_uri = "https://43neawor1c.execute-api.us-east-1.amazonaws.com/"
private_subnet_ids = [
  "subnet-0dd60ec42b37cd11b",
  "subnet-03ff99b7c866be1ff",
  "subnet-01c2d9c9c9a0f2d47",
]

You can test the deployment using curl like:

curl -H "day: day" https://43neawor1c.execute-api.us-east-1.amazonaws.com

make sure to replace the uri with the uri generated for you. And you should see an output like:

{"message": "Got your GET, D. E. Fault. Have a nice day!", "input": {"version": "2.0", "routeKey": "ANY /", "rawPath": "/", "rawQueryString": "", "headers": {"accept": "*/*", "content-length": "0", "day": "day", "host": "43neawor1c.execute-api.us-east-1.amazonaws.com", "user-agent": "curl/7.77.0", "x-amzn-trace-id": "Root=1-61d8bc57-705914ce514abef9631be62a", "x-forwarded-for": "73.162.24.47", "x-forwarded-port": "443", "x-forwarded-proto": "https"}, "requestContext": {"accountId": "828259620284", "apiId": "43neawor1c", "domainName": "43neawor1c.execute-api.us-east-1.amazonaws.com", "domainPrefix": "43neawor1c", "http": {"method": "GET", "path": "/", "protocol": "HTTP/1.1", "sourceIp": "73.162.24.47", "userAgent": "curl/7.77.0"}, "requestId": "LmJduiNOIAMEMkA=", "routeKey": "ANY /", "stage": "$default", "time": "07/Jan/2022:22:19:03 +0000", "timeEpoch": 1641593943604}, "isBase64Encoded": false}}%

You can also visit the lambda_trigger_uri in your browser to check your rest api deployed on lambda.

References

• Checkout AWS docs on how to package more complex lambdas
• Opta docs

For more guidance, please reach out to us in our slack channel.