natashakss/aws-lambda-serverless-barebones

A starter serverless function - Built with the Serverless Platform; Deployed to AWS Lambda

Barebones Serverless Function Boilerplate

A barebones serverless function; Built with the Serverless Platform on a NodeJS runtime; Deployed to AWS Lambda.

Instructions

Set up .AWS credentials on your local machine

1. Install the AWS CLI

2. Run aws configure. It will prompt you to provide these settings:

AWS Access Key ID [None]: AKIAIOSFODNN7EXAMPLE
AWS Secret Access Key [None]: wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
Default region name [None]: ap-southeast-1
Default output format [None]: json

Note: Enter your preferred "default region name", for me, it's ap-southeast-1. Also, these credentials will be saved into your ~/.aws folder.

Install the Serverless CLI

Needs >= Node v4.

npm install -g serverless

Create a new service

A service on Serverless is a collection of all your AWS Lambda functions, the events that trigger them and any AWS infrastructure resources they need. These settings are specified in a file called serverless.yml.

1. Create a new service from a variety of templates by running

# Choose a template
serverless create --template [aws-nodejs / aws-nodejs-ecma-script / aws-python3 / hello-world ...]

# View all available templates
serverless create --help

2. Edit your serverless.yml file, or use the one included in this repository. More serverless.yml settings may be found on the official Serverless documentation site.

3. Deploy your Service using your default AWS credentials by running

serverless deploy -v

this deploys all changes to your Functions, Events or Resources in serverless.yml

Deploying your function

Deploy your function without re-deploying your service with

serverless deploy function -f hello

Logging

Invoke and fetch function logs with

serverless invoke -f hello -l

Alternatively, if you want to do this within your AWS Lambda Management Console, navigate to "Monitoring" > "View logs in CloudWatch" > Click on a log stream.