example of dynamodb crud app template

dynamodbCrudApp.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  shortenLink
  Sample SAM Template for shortenLink

Globals:
  Function:
    Timeout: 3
    Runtime: python3.8
    MemorySize: 128
    CodeUri: locationApp/

Resources:
  Locations:
    Type: AWS::DynamoDB::Table
    Properties:
      AttributeDefinitions:
        - AttributeName: id
          AttributeType: S
        - AttributeName: city
          AttributeType: S
      BillingMode: PAY_PER_REQUEST
      KeySchema:
        - AttributeName: id
          KeyType: HASH
      LocalSecondaryIndexes:
        - IndexName: name
          KeySchema:
            - AttributeName: name
              KeyType: HASH
          Projection:
            ProjectionType: ALL
        - IndexName: city
          KeySchema:
            - AttributeName: city
              KeyType: HASH
          Projection:
            ProjectionType: ALL
      PointInTimeRecoverySpecification:
        PointInTimeRecoveryEnabled: true
      TableName: !Join [ "-" , ["locations", !Ref BRANCH]]
  Add:
    Type: AWS::Serverless::Function 
    Properties:
      Handler: app.add
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref Locations
      Events:
        ShortenLinkEvent:
          Type: Api 
          Properties:
            Path: /add
            Method: post
            RestApiId: !Ref ApiGateway
  Remove:
    Type: AWS::Serverless::Function 
    Properties:
      Handler: app.remove
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref Locations
      Events:
        ShortenLinkEvent:
          Type: Api 
          Properties:
            Path: /remove
            Method: post
            RestApiId: !Ref ApiGateway
  Update:
    Type: AWS::Serverless::Function 
    Properties:
      Handler: app.update
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref Locations
      Events:
        ShortenLinkEvent:
          Type: Api 
          Properties:
            Path: /update
            Method: post
            RestApiId: !Ref ApiGateway
  Get:
    Type: AWS::Serverless::Function 
    Properties:
      Handler: app.get
      Policies:
        - DynamoDBReadPolicy:
            TableName: !Ref Locations
      Events:
        ShortenLinkEvent:
          Type: Api 
          Properties:
            Path: /get
            Method: get
            RestApiId: !Ref ApiGateway
  ApiGateway:
    Type: AWS::Serverless::Api
    Properties:
      StageName: Prod
      EndpointConfiguration:
        Type: EDGE

Outputs:
  Api:
    Value: !Sub "https://${ApiGateway}.execute-api.${AWS::Region}.amazonaws.com/Prod/"
  Get:
    Value: !Ref Get
  Add:
    Value: !Ref Add
  Remove:
    Value: !Ref Remove
  Update:
    Value: !Ref Update