@caspiandb/data-api-migrations-serverless

Data API Migrations Serverless Plugin

Summary

A Serverless plugin to generate, apply and rollback migrations on the Data API for Aurora Serverless. Plays nice with the Data API Local Serverless Plugin and Aurora Data API Client.

Data API for Aurora Serverless Suite

This library is part of the Data API for Aurora Serverless Suite, a monorepo that includes libraries, Serverless Framework plugins and development tools to simplify and enhance the development, deployment and use of the Data API for Aurora Serverless on Amazon Web Services.

Installation

$ npm install data-api-migrations-serverless --save-dev

Config

Simply add the data-api-local config to your serverless.yml file. e.g.

service: myApp

provider:
  name: aws
  runtime: nodejs10.x
  region: us-east-1
  environment:
    AWS_REGION: ${self:provider.region}
    DATA_API_SECRET_ARN: arn:aws:secretsmanager:us-east-1:123456789012:secret:example
    DATA_API_RESOURCE_ARN: arn:aws:rds:us-east-1:123456789012:cluster:example
    DATABASE_NAME: example
  iamRoleStatements:
    - Effect: Allow
      Action:
        - "secretsmanager:GetSecretValue"
      Resource:
        - ${self:provider.environment.DATA_API_SECRET_ARN}
    - Effect: Allow
      Action:
        - "rds-data:*"
      Resource:
        - ${self:provider.environment.DATA_API_RESOURCE_ARN}

plugins:
	- serverless-plugin-typescript # Also works with vanila old JavaScript
  - data-api-migrations-serverless
  - data-api-local-serverless # Recommended for offline development
  - serverless-offline

custom:
  data-api-migrations:
    local: # config for local/offline development (default stage when stage is not provided)
      region: ${self:provider.region}
      endpoint: http://localhost:8080
      maxRetries: 0
      secretArn: ${self:provider.environment.DATA_API_SECRET_ARN}
      resourceArn: ${self:provider.environment.DATA_API_RESOURCE_ARN}
      database: ${self:provider.environment.DATA_API_DATABASE_NAME}
      credentials:
        accessKeyId: example
        secretAccessKey: example
    prod: # config for production
      region: ${self:provider.region}
      secretArn: ${self:provider.environment.DATA_API_SECRET_ARN}
      resourceArn: ${self:provider.environment.DATA_API_RESOURCE_ARN}
      database: ${self:provider.environment.DATA_API_DATABASE_NAME}

custom.data-api-migrations Config

Name	Description	Default
typescript	Enable/disable typescript migration files.	true
[stage].(...)	See AuroraDataAPI#Constructor.

Commands

Command	Description
sls migraitons create	Generate a new migration file. Arguments: --name or -n : The name for the migration (Required).
sls migrations apply	Apply all pending migrations. Arguments: --stage: The stage (defaults to local if not provided).
sls migrations rollback	Rollback the most recent (applied) migration. Arguments: --stage: The stage (defaults to local if not provided).
sls migrations status	List the migrations that have been applied. Arguments: --stage: The stage (defaults to local if not provided).

Migration files

Migrations files are created in the [PROJECT_ROOT]/migrations folder and each file exports two functions: up to apply migrations and down to rollback migrations.

// migrations/20200103112043_createUsers.ts

import { MigrationFn } from 'data-api-migrations'

export const up: MigrationFn = async (dataAPI) => {
  const t = await dataAPI.beginTransaction()
  try {
    await t.query(`
      CREATE TABLE "users" (
        "id" SERIAL PRIMARY KEY,
        "name" varchar,
        "completedAt" timestamp,
        "createdAt" timestamp DEFAULT now(),
        "updatedAt" timestamp DEFAULT now()
      )
    `)
    await t.commit()
  } catch (error) {
    await t.rollback()
    throw error
  }
}

export const down: MigrationFn = async (dataAPI) => {
  const t = await dataAPI.beginTransaction()
  try {
    await t.query('DROP TABLE "users"')
    await t.commit()
  } catch (error) {
    await t.rollback()
    throw error
  }
}

The first argument dataAPI is an instance of the Aurora Data API Client library.

Example

Take a look at the example folder for a complete example app that uses all the Data API for Aurora Serverless Suite packages.

MIT License

Copyright (c) 2020 Marc Greenstock

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.