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README.md

AWS SAM

YouTube Tutorial

1. Install AWS SAM CLI

macOS

brew tap aws/tap

brew install aws-sam-cli

sam --version

2. Setting up AWS credentials

  • Create admin user for AWS SAM
  • Download Credentials
  • Configure AWS Cli
aws configure

3. Create AWS Lambda API Gateway Node JS

  • Initialize SAM project
sam init
  • Go over project structure
  • Remove generated project
rm -rf sam
  • Created sam directory
  • Create api directory
  • Change directory to api
cd sam/api
  • Run npm init
npm init
  • Create a function.js file
  • Create template.yaml file
AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: AWS SAM Tutorial

Globals:
  Function:
    MemorySize: 128

Resources:
  APIFunction:
    Type: AWS::Serverless::Function
    Properties:
      Runtime: nodejs14.x
      Handler: function.lambdaHandler
      CodeUri: api/
      Timeout: 3
      Events:
        Hello:
          Type: Api
          Properties:
            Path: /hello
            Method: POST
            RestApiId: 
              Ref: HelloAPI

  HelloAPI:
    Type: AWS::Serverless::Api
    Properties:
      StageName: staging
      OpenApiVersion: 3.0.3

Outputs:
  APIFunction:
    Description: "Api Lambda Function ARN"
    Value: !GetAtt APIFunction.Arn
  Tutorials:
    Description: "YouTube Channel"
    Value: https://www.youtube.com/antonputra

4. Test Lambda Locally SAM

  • Change directory to sam
  • Run sam build
  • Create api/event.json
  • sam local invoke APIFunction -e api/event.json
  • Run sam deploy --guided
  • Go to S3
  • Get URL from console
curl -d '{"name": "Anton"}' https://jh7n04hpaj.execute-api.us-east-1.amazonaws.com/staging/hello

5. Test Lambda from Console

  • Create new TestName event
{
  "body": "{\"name\": \"Anton\"}"
}

Create AWS Lambda S3 File Upload NodeJS

  • Create s3 folder
  • Run npm init from s3 folder
  • Create function.js file
  • Install aws-sdk npm i aws-sdk
  • Add S3Function, ExampleBucket and Outputs
  • Run sam build
  • Run sam deploy
  • Go to S3
  • Fo to lambda
  • Upload README to S3
  • Go to CloudWatch

Create AWS Lambda SNS Python Example

  • Create sns folder
  • Create function.py, requirements.txt, and Dockerfile
  • Add SNSFunction and Outputs
  • Create SNS topic sns-topic-for-lambda
  • Run sam build
  • Run sam deploy --guided
  • Create ECR repo sns
  • Publish message
  • Check CloudWatch logs

Clen Up

  • Delete SNS topic sns-topic-for-lambda
  • Delete ECR repository sns
  • Delete all cloud watch log groups
  • Delete IAM User admin
  • Delete AWS CLI sam
brew remove aws-sam-cli
  • Delete all S3 buckets
  • Delete all CloudFormation Templates