serverless frame work + Type Script + DynamoDB의 로컬 환경

1. sls create

sls create -t aws-nodejs-typescript -p my-api

2. plugin

npm i -D serverless-offline serverless-dynamodb-local

  plugins: [
    'serverless-webpack',
    'serverless-dynamodb-local',
    'serverless-offline',
  ]

3. JDK 없을 때 JDK 설치

sudo apt install openjdk-14-jdk

4. sls dynamodb install

sls dynamodb install

5.dynamodb local로 설정

  custom: {
    // ...
    dynamodb: {
      stages: ['dev'],
      start: {
        port: 8000,
        inMemory: true,
        migrate: true,
        seed: false,
      },
    },
  },
  resources: {
    Resources: {
      JankensTable: {
        Type: 'AWS::DynamoDB::Table',
        Properties: {
          TableName: 'jankens',
          AttributeDefinitions: [
            {
              AttributeName: 'player',
              AttributeType: 'S',
            },
            {
              AttributeName: 'unixtime',
              AttributeType: 'N',
            },
          ],
          KeySchema: [
            {
              AttributeName: 'player',
              KeyType: 'HASH',
            },
            {
              AttributeName: 'unixtime',
              KeyType: 'RANGE',
            },
          ],
          ProvisionedThroughput: {
            ReadCapacityUnits: 1,
            WriteCapacityUnits: 1,
          },
        },
      },
    },
  },

6. sls dynamodb start

7. npm i -S aws-sdk

npm i -S aws-sdk

8. Lambda에서 DynamoDB 클라이언트 초기화

import { DynamoDB } from 'aws-sdk'

const dynamodb = process.env.IS_OFFLINE
  ? new DynamoDB({
      region: 'localhost',
      endpoint: 'http://localhost:8000',
    })
  : new DynamoDB()