COMBINATION - LAMBDA FUNCTION

Implementation of a simple mathematical combination algorithm where the order of the elements in the grouping does not interfere with the result. The algorithm runs on the architecture of Lambda AWS functions.

Requirements

• AWS CLI already configured with at least PowerUser permission
• Java SE Development Kit 8 installed
• Docker installed
• Maven
• SAM CLI

Setup process

Installing dependencies

Use maven to install our dependencies and package our application into a JAR file:

cd Combination/
mvn clean package

Local deploy

Invoking function locally through local API Gateway

1. Start the SAM local API.

• sam build --template combination.yaml
• sam package --output-template-file packaged.yaml --s3-bucket <some bucket name>
• sam local start-api

If the previous command ran successfully you should now be able to hit the following local endpoint to invoke the functions rooted at http://localhost:3000/combination

Request Example:

curl --location --request POST 'http://localhost:3000/combination' \
--header 'Content-Type: application/json' \
--data-raw '{
    "p": "2",
    "n": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
}'

Bringing to the next level

Next, you can use the following resources to know more about beyond hello world samples and how others structure their Serverless applications:

• AWS Serverless Application Repository