はじめに

SAM template使う時、DynamoDBの定義に関して毎回調べてる気がするのでここに残しておきます。

コード

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  description

Globals:
  Function:
    Timeout: 30
    MemorySize: 128

Resources:
  SomeFunction:
    Type: AWS::Serverless::Function
    Metadata:
      BuildMethod: go1.x
    Properties:
      CodeUri: some_function/
      Handler: bootstrap
      Runtime: provided.al2
      Architectures:
        - x86_64
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref SampleTable
      Environment:
        Variables:
          SAMPLE_TABLE: !Ref SampleTable

  SampleTable:
    Type: AWS::DynamoDB::Table
    Properties:
      TableName: 'SampleTable'
      AttributeDefinitions:
        - AttributeName: 'id'
          AttributeType: 'S'
        - AttributeName: 'value'
          AttributeType: 'N'
      KeySchema:
        - AttributeName: 'id'
          KeyType: 'HASH'
        - AttributeName: 'value'
          KeyType: 'RANGE'
      BillingMode: PAY_PER_REQUEST

Outputs:
  SomeFunction:
    Description: "First Lambda Function ARN"
    Value: !GetAtt SomeFunction.Arn