lambdashortener.yml

AWSTemplateFormatVersion: "2010-09-09"
Description: 
    This script provisions the infrastructure for implementing the serverless URL shortener service on AWS
Resources:
  ShortenerBucket:
      Type: AWS::S3::Bucket
      Properties:
        AccessControl: PublicRead
        WebsiteConfiguration:
          IndexDocument: index.html
          ErrorDocument: index.html
  ShortenerURLBucketPolicy:
      Type: AWS::S3::BucketPolicy
      Properties:
        Bucket: !Ref ShortenerBucket
        PolicyDocument:
          Statement:
          - Action: 
              - s3:GetObject
            Effect: Allow
            Resource: !Sub
              arn:aws:s3:::${ShortenerBucket}/*
            Principal: "*"
  ZappaRole:
      Type: AWS::IAM::Role
      Properties:
        AssumeRolePolicyDocument:
          Version: "2012-10-17"
          Statement:
          - Effect: Allow
            Principal:
              Service: 
              - lambda.amazonaws.com
              - apigateway.amazonaws.com
            Action: "sts:AssumeRole"
        Policies:
        - PolicyName: root
          PolicyDocument:
            Version: "2012-10-17"
            Statement:
            - Effect: Allow
              Action:
              - "logs:*"
              Resource: "arn:aws:logs:*:*:*"
            - Effect: Allow
              Action: lambda:InvokeFunction
              Resource: "*"
            - Effect: Allow
              Action:
              - s3:PutObject
              Resource: !Sub
                arn:aws:s3:::${ShortenerBucket}/*
        Path: /
        RoleName: ShortenerRole
Outputs:
  ShortenerWebsiteURL:
    Value: !GetAtt ShortenerBucket.WebsiteURL
  BucketName:
    Value: !Ref ShortenerBucket